newgrf.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 
00014 #include <stdarg.h>
00015 
00016 #include "debug.h"
00017 #include "fileio_func.h"
00018 #include "engine_func.h"
00019 #include "engine_base.h"
00020 #include "bridge.h"
00021 #include "town.h"
00022 #include "newgrf_engine.h"
00023 #include "newgrf_text.h"
00024 #include "fontcache.h"
00025 #include "currency.h"
00026 #include "landscape.h"
00027 #include "newgrf_cargo.h"
00028 #include "newgrf_house.h"
00029 #include "newgrf_sound.h"
00030 #include "newgrf_station.h"
00031 #include "industrytype.h"
00032 #include "newgrf_canal.h"
00033 #include "newgrf_townname.h"
00034 #include "newgrf_industries.h"
00035 #include "newgrf_airporttiles.h"
00036 #include "newgrf_airport.h"
00037 #include "newgrf_object.h"
00038 #include "rev.h"
00039 #include "fios.h"
00040 #include "strings_func.h"
00041 #include "date_func.h"
00042 #include "string_func.h"
00043 #include "network/network.h"
00044 #include <map>
00045 #include "smallmap_gui.h"
00046 #include "genworld.h"
00047 #include "error.h"
00048 #include "vehicle_func.h"
00049 #include "language.h"
00050 #include "vehicle_base.h"
00051 
00052 #include "table/strings.h"
00053 #include "table/build_industry.h"
00054 
00055 /* TTDPatch extended GRF format codec
00056  * (c) Petr Baudis 2004 (GPL'd)
00057  * Changes by Florian octo Forster are (c) by the OpenTTD development team.
00058  *
00059  * Contains portions of documentation by TTDPatch team.
00060  * Thanks especially to Josef Drexler for the documentation as well as a lot
00061  * of help at #tycoon. Also thanks to Michael Blunck for his GRF files which
00062  * served as subject to the initial testing of this codec. */
00063 
00065 static SmallVector<GRFFile *, 16> _grf_files;
00066 
00068 byte _misc_grf_features = 0;
00069 
00071 static uint32 _ttdpatch_flags[8];
00072 
00074 GRFLoadedFeatures _loaded_newgrf_features;
00075 
00076 static const uint MAX_SPRITEGROUP = UINT8_MAX; 
00077 
00079 struct GrfProcessingState {
00080 private:
00082   struct SpriteSet {
00083     SpriteID sprite;  
00084     uint num_sprites; 
00085   };
00086 
00088   std::map<uint, SpriteSet> spritesets[GSF_END];
00089 
00090 public:
00091   /* Global state */
00092   GrfLoadingStage stage;    
00093   SpriteID spriteid;        
00094 
00095   /* Local state in the file */
00096   uint file_index;          
00097   GRFFile *grffile;         
00098   GRFConfig *grfconfig;     
00099   uint32 nfo_line;          
00100   byte grf_container_ver;   
00101 
00102   /* Kind of return values when processing certain actions */
00103   int skip_sprites;         
00104 
00105   /* Currently referenceable spritegroups */
00106   SpriteGroup *spritegroups[MAX_SPRITEGROUP + 1];
00107 
00109   void ClearDataForNextFile()
00110   {
00111     this->nfo_line = 0;
00112     this->skip_sprites = 0;
00113 
00114     for (uint i = 0; i < GSF_END; i++) {
00115       this->spritesets[i].clear();
00116     }
00117 
00118     memset(this->spritegroups, 0, sizeof(this->spritegroups));
00119   }
00120 
00129   void AddSpriteSets(byte feature, SpriteID first_sprite, uint first_set, uint numsets, uint numents)
00130   {
00131     assert(feature < GSF_END);
00132     for (uint i = 0; i < numsets; i++) {
00133       SpriteSet &set = this->spritesets[feature][first_set + i];
00134       set.sprite = first_sprite + i * numents;
00135       set.num_sprites = numents;
00136     }
00137   }
00138 
00145   bool HasValidSpriteSets(byte feature) const
00146   {
00147     assert(feature < GSF_END);
00148     return !this->spritesets[feature].empty();
00149   }
00150 
00158   bool IsValidSpriteSet(byte feature, uint set) const
00159   {
00160     assert(feature < GSF_END);
00161     return this->spritesets[feature].find(set) != this->spritesets[feature].end();
00162   }
00163 
00170   SpriteID GetSprite(byte feature, uint set) const
00171   {
00172     assert(IsValidSpriteSet(feature, set));
00173     return this->spritesets[feature].find(set)->second.sprite;
00174   }
00175 
00182   uint GetNumEnts(byte feature, uint set) const
00183   {
00184     assert(IsValidSpriteSet(feature, set));
00185     return this->spritesets[feature].find(set)->second.num_sprites;
00186   }
00187 };
00188 
00189 static GrfProcessingState _cur;
00190 
00191 
00192 class OTTDByteReaderSignal { };
00193 
00195 class ByteReader {
00196 protected:
00197   byte *data;
00198   byte *end;
00199 
00200 public:
00201   ByteReader(byte *data, byte *end) : data(data), end(end) { }
00202 
00203   inline byte ReadByte()
00204   {
00205     if (data < end) return *(data)++;
00206     throw OTTDByteReaderSignal();
00207   }
00208 
00209   uint16 ReadWord()
00210   {
00211     uint16 val = ReadByte();
00212     return val | (ReadByte() << 8);
00213   }
00214 
00215   uint16 ReadExtendedByte()
00216   {
00217     uint16 val = ReadByte();
00218     return val == 0xFF ? ReadWord() : val;
00219   }
00220 
00221   uint32 ReadDWord()
00222   {
00223     uint32 val = ReadWord();
00224     return val | (ReadWord() << 16);
00225   }
00226 
00227   uint32 ReadVarSize(byte size)
00228   {
00229     switch (size) {
00230       case 1: return ReadByte();
00231       case 2: return ReadWord();
00232       case 4: return ReadDWord();
00233       default:
00234         NOT_REACHED();
00235         return 0;
00236     }
00237   }
00238 
00239   const char *ReadString()
00240   {
00241     char *string = reinterpret_cast<char *>(data);
00242     size_t string_length = ttd_strnlen(string, Remaining());
00243 
00244     if (string_length == Remaining()) {
00245       /* String was not NUL terminated, so make sure it is now. */
00246       string[string_length - 1] = '\0';
00247       grfmsg(7, "String was not terminated with a zero byte.");
00248     } else {
00249       /* Increase the string length to include the NUL byte. */
00250       string_length++;
00251     }
00252     Skip(string_length);
00253 
00254     return string;
00255   }
00256 
00257   inline size_t Remaining() const
00258   {
00259     return end - data;
00260   }
00261 
00262   inline bool HasData(size_t count = 1) const
00263   {
00264     return data + count <= end;
00265   }
00266 
00267   inline byte *Data()
00268   {
00269     return data;
00270   }
00271 
00272   inline void Skip(size_t len)
00273   {
00274     data += len;
00275     /* It is valid to move the buffer to exactly the end of the data,
00276      * as there may not be any more data read. */
00277     if (data > end) throw OTTDByteReaderSignal();
00278   }
00279 };
00280 
00281 typedef void (*SpecialSpriteHandler)(ByteReader *buf);
00282 
00283 static const uint MAX_STATIONS = 256;
00284 
00286 struct GRFTempEngineData {
00288   enum Refittability {
00289     UNSET    =  0,  
00290     EMPTY,          
00291     NONEMPTY,       
00292   };
00293 
00294   uint16 cargo_allowed;
00295   uint16 cargo_disallowed;
00296   RailTypeLabel railtypelabel;
00297   const GRFFile *defaultcargo_grf; 
00298   Refittability refittability;     
00299   bool prop27_set;         
00300   uint8 rv_max_speed;      
00301   uint32 ctt_include_mask; 
00302   uint32 ctt_exclude_mask; 
00303 
00308   void UpdateRefittability(bool non_empty)
00309   {
00310     if (non_empty) {
00311       this->refittability = NONEMPTY;
00312     } else if (this->refittability == UNSET) {
00313       this->refittability = EMPTY;
00314     }
00315   }
00316 };
00317 
00318 static GRFTempEngineData *_gted;  
00319 
00324 static uint32 _grm_engines[256];
00325 
00327 static uint32 _grm_cargoes[NUM_CARGO * 2];
00328 
00329 struct GRFLocation {
00330   uint32 grfid;
00331   uint32 nfoline;
00332 
00333   GRFLocation(uint32 grfid, uint32 nfoline) : grfid(grfid), nfoline(nfoline) { }
00334 
00335   bool operator<(const GRFLocation &other) const
00336   {
00337     return this->grfid < other.grfid || (this->grfid == other.grfid && this->nfoline < other.nfoline);
00338   }
00339 
00340   bool operator == (const GRFLocation &other) const
00341   {
00342     return this->grfid == other.grfid && this->nfoline == other.nfoline;
00343   }
00344 };
00345 
00346 static std::map<GRFLocation, SpriteID> _grm_sprites;
00347 typedef std::map<GRFLocation, byte*> GRFLineToSpriteOverride;
00348 static GRFLineToSpriteOverride _grf_line_to_action6_sprite_override;
00349 
00360 void CDECL grfmsg(int severity, const char *str, ...)
00361 {
00362   char buf[1024];
00363   va_list va;
00364 
00365   va_start(va, str);
00366   vsnprintf(buf, sizeof(buf), str, va);
00367   va_end(va);
00368 
00369   DEBUG(grf, severity, "[%s:%d] %s", _cur.grfconfig->filename, _cur.nfo_line, buf);
00370 }
00371 
00377 static GRFFile *GetFileByGRFID(uint32 grfid)
00378 {
00379   const GRFFile * const *end = _grf_files.End();
00380   for (GRFFile * const *file = _grf_files.Begin(); file != end; file++) {
00381     if ((*file)->grfid == grfid) return *file;
00382   }
00383   return NULL;
00384 }
00385 
00391 static GRFFile *GetFileByFilename(const char *filename)
00392 {
00393   const GRFFile * const *end = _grf_files.End();
00394   for (GRFFile * const *file = _grf_files.Begin(); file != end; file++) {
00395     if (strcmp((*file)->filename, filename) == 0) return *file;
00396   }
00397   return NULL;
00398 }
00399 
00401 static void ClearTemporaryNewGRFData(GRFFile *gf)
00402 {
00403   /* Clear the GOTO labels used for GRF processing */
00404   for (GRFLabel *l = gf->label; l != NULL;) {
00405     GRFLabel *l2 = l->next;
00406     free(l);
00407     l = l2;
00408   }
00409   gf->label = NULL;
00410 }
00411 
00418 static GRFError *DisableGrf(StringID message = STR_NULL, GRFConfig *config = NULL)
00419 {
00420   GRFFile *file;
00421   if (config != NULL) {
00422     file = GetFileByGRFID(config->ident.grfid);
00423   } else {
00424     config = _cur.grfconfig;
00425     file = _cur.grffile;
00426   }
00427 
00428   config->status = GCS_DISABLED;
00429   if (file != NULL) ClearTemporaryNewGRFData(file);
00430   if (config == _cur.grfconfig) _cur.skip_sprites = -1;
00431 
00432   if (message != STR_NULL) {
00433     delete config->error;
00434     config->error = new GRFError(STR_NEWGRF_ERROR_MSG_FATAL, message);
00435     if (config == _cur.grfconfig) config->error->param_value[0] = _cur.nfo_line;
00436   }
00437 
00438   return config->error;
00439 }
00440 
00441 
00442 typedef std::map<StringID *, uint32> StringIDToGRFIDMapping;
00443 static StringIDToGRFIDMapping _string_to_grf_mapping;
00444 
00452 StringID MapGRFStringID(uint32 grfid, StringID str)
00453 {
00454   /* 0xD0 and 0xDC stand for all the TextIDs in the range
00455    * of 0xD000 (misc graphics texts) and 0xDC00 (misc persistent texts).
00456    * These strings are unique to each grf file, and thus require to be used with the
00457    * grfid in which they are declared */
00458   switch (GB(str, 8, 8)) {
00459     case 0xD0: case 0xD1: case 0xD2: case 0xD3:
00460     case 0xDC:
00461       return GetGRFStringID(grfid, str);
00462 
00463     case 0xD4: case 0xD5: case 0xD6: case 0xD7:
00464       /* Strings embedded via 0x81 have 0x400 added to them (no real
00465        * explanation why...) */
00466       return GetGRFStringID(grfid, str - 0x400);
00467 
00468     default: break;
00469   }
00470 
00471   return TTDPStringIDToOTTDStringIDMapping(str);
00472 }
00473 
00474 static std::map<uint32, uint32> _grf_id_overrides;
00475 
00481 static void SetNewGRFOverride(uint32 source_grfid, uint32 target_grfid)
00482 {
00483   _grf_id_overrides[source_grfid] = target_grfid;
00484   grfmsg(5, "SetNewGRFOverride: Added override of 0x%X to 0x%X", BSWAP32(source_grfid), BSWAP32(target_grfid));
00485 }
00486 
00495 static Engine *GetNewEngine(const GRFFile *file, VehicleType type, uint16 internal_id, bool static_access = false)
00496 {
00497   /* Hack for add-on GRFs that need to modify another GRF's engines. This lets
00498    * them use the same engine slots. */
00499   uint32 scope_grfid = INVALID_GRFID; // If not using dynamic_engines, all newgrfs share their ID range
00500   if (_settings_game.vehicle.dynamic_engines) {
00501     /* If dynamic_engies is enabled, there can be multiple independent ID ranges. */
00502     scope_grfid = file->grfid;
00503     uint32 override = _grf_id_overrides[file->grfid];
00504     if (override != 0) {
00505       scope_grfid = override;
00506       const GRFFile *grf_match = GetFileByGRFID(override);
00507       if (grf_match == NULL) {
00508         grfmsg(5, "Tried mapping from GRFID %x to %x but target is not loaded", BSWAP32(file->grfid), BSWAP32(override));
00509       } else {
00510         grfmsg(5, "Mapping from GRFID %x to %x", BSWAP32(file->grfid), BSWAP32(override));
00511       }
00512     }
00513 
00514     /* Check if the engine is registered in the override manager */
00515     EngineID engine = _engine_mngr.GetID(type, internal_id, scope_grfid);
00516     if (engine != INVALID_ENGINE) {
00517       Engine *e = Engine::Get(engine);
00518       if (e->grf_prop.grffile == NULL) e->grf_prop.grffile = file;
00519       return e;
00520     }
00521   }
00522 
00523   /* Check if there is an unreserved slot */
00524   EngineID engine = _engine_mngr.GetID(type, internal_id, INVALID_GRFID);
00525   if (engine != INVALID_ENGINE) {
00526     Engine *e = Engine::Get(engine);
00527 
00528     if (e->grf_prop.grffile == NULL) {
00529       e->grf_prop.grffile = file;
00530       grfmsg(5, "Replaced engine at index %d for GRFID %x, type %d, index %d", e->index, BSWAP32(file->grfid), type, internal_id);
00531     }
00532 
00533     /* Reserve the engine slot */
00534     if (!static_access) {
00535       EngineIDMapping *eid = _engine_mngr.Get(engine);
00536       eid->grfid           = scope_grfid; // Note: this is INVALID_GRFID if dynamic_engines is disabled, so no reservation
00537     }
00538 
00539     return e;
00540   }
00541 
00542   if (static_access) return NULL;
00543 
00544   if (!Engine::CanAllocateItem()) {
00545     grfmsg(0, "Can't allocate any more engines");
00546     return NULL;
00547   }
00548 
00549   size_t engine_pool_size = Engine::GetPoolSize();
00550 
00551   /* ... it's not, so create a new one based off an existing engine */
00552   Engine *e = new Engine(type, internal_id);
00553   e->grf_prop.grffile = file;
00554 
00555   /* Reserve the engine slot */
00556   assert(_engine_mngr.Length() == e->index);
00557   EngineIDMapping *eid = _engine_mngr.Append();
00558   eid->type            = type;
00559   eid->grfid           = scope_grfid; // Note: this is INVALID_GRFID if dynamic_engines is disabled, so no reservation
00560   eid->internal_id     = internal_id;
00561   eid->substitute_id   = min(internal_id, _engine_counts[type]); // substitute_id == _engine_counts[subtype] means "no substitute"
00562 
00563   if (engine_pool_size != Engine::GetPoolSize()) {
00564     /* Resize temporary engine data ... */
00565     _gted = ReallocT(_gted, Engine::GetPoolSize());
00566 
00567     /* and blank the new block. */
00568     size_t len = (Engine::GetPoolSize() - engine_pool_size) * sizeof(*_gted);
00569     memset(_gted + engine_pool_size, 0, len);
00570   }
00571   if (type == VEH_TRAIN) {
00572     _gted[e->index].railtypelabel = GetRailTypeInfo(e->u.rail.railtype)->label;
00573   }
00574 
00575   grfmsg(5, "Created new engine at index %d for GRFID %x, type %d, index %d", e->index, BSWAP32(file->grfid), type, internal_id);
00576 
00577   return e;
00578 }
00579 
00590 EngineID GetNewEngineID(const GRFFile *file, VehicleType type, uint16 internal_id)
00591 {
00592   uint32 scope_grfid = INVALID_GRFID; // If not using dynamic_engines, all newgrfs share their ID range
00593   if (_settings_game.vehicle.dynamic_engines) {
00594     scope_grfid = file->grfid;
00595     uint32 override = _grf_id_overrides[file->grfid];
00596     if (override != 0) scope_grfid = override;
00597   }
00598 
00599   return _engine_mngr.GetID(type, internal_id, scope_grfid);
00600 }
00601 
00606 static void MapSpriteMappingRecolour(PalSpriteID *grf_sprite)
00607 {
00608   if (HasBit(grf_sprite->pal, 14)) {
00609     ClrBit(grf_sprite->pal, 14);
00610     SetBit(grf_sprite->sprite, SPRITE_MODIFIER_OPAQUE);
00611   }
00612 
00613   if (HasBit(grf_sprite->sprite, 14)) {
00614     ClrBit(grf_sprite->sprite, 14);
00615     SetBit(grf_sprite->sprite, PALETTE_MODIFIER_TRANSPARENT);
00616   }
00617 
00618   if (HasBit(grf_sprite->sprite, 15)) {
00619     ClrBit(grf_sprite->sprite, 15);
00620     SetBit(grf_sprite->sprite, PALETTE_MODIFIER_COLOUR);
00621   }
00622 }
00623 
00637 static TileLayoutFlags ReadSpriteLayoutSprite(ByteReader *buf, bool read_flags, bool invert_action1_flag, bool use_cur_spritesets, int feature, PalSpriteID *grf_sprite, uint16 *max_sprite_offset = NULL, uint16 *max_palette_offset = NULL)
00638 {
00639   grf_sprite->sprite = buf->ReadWord();
00640   grf_sprite->pal = buf->ReadWord();
00641   TileLayoutFlags flags = read_flags ? (TileLayoutFlags)buf->ReadWord() : TLF_NOTHING;
00642 
00643   MapSpriteMappingRecolour(grf_sprite);
00644 
00645   bool custom_sprite = HasBit(grf_sprite->pal, 15) != invert_action1_flag;
00646   ClrBit(grf_sprite->pal, 15);
00647   if (custom_sprite) {
00648     /* Use sprite from Action 1 */
00649     uint index = GB(grf_sprite->sprite, 0, 14);
00650     if (use_cur_spritesets && (!_cur.IsValidSpriteSet(feature, index) || _cur.GetNumEnts(feature, index) == 0)) {
00651       grfmsg(1, "ReadSpriteLayoutSprite: Spritelayout uses undefined custom spriteset %d", index);
00652       grf_sprite->sprite = SPR_IMG_QUERY;
00653       grf_sprite->pal = PAL_NONE;
00654     } else {
00655       SpriteID sprite = use_cur_spritesets ? _cur.GetSprite(feature, index) : index;
00656       if (max_sprite_offset != NULL) *max_sprite_offset = use_cur_spritesets ? _cur.GetNumEnts(feature, index) : UINT16_MAX;
00657       SB(grf_sprite->sprite, 0, SPRITE_WIDTH, sprite);
00658       SetBit(grf_sprite->sprite, SPRITE_MODIFIER_CUSTOM_SPRITE);
00659     }
00660   } else if ((flags & TLF_SPRITE_VAR10) && !(flags & TLF_SPRITE_REG_FLAGS)) {
00661     grfmsg(1, "ReadSpriteLayoutSprite: Spritelayout specifies var10 value for non-action-1 sprite");
00662     DisableGrf(STR_NEWGRF_ERROR_INVALID_SPRITE_LAYOUT);
00663     return flags;
00664   }
00665 
00666   if (flags & TLF_CUSTOM_PALETTE) {
00667     /* Use palette from Action 1 */
00668     uint index = GB(grf_sprite->pal, 0, 14);
00669     if (use_cur_spritesets && (!_cur.IsValidSpriteSet(feature, index) || _cur.GetNumEnts(feature, index) == 0)) {
00670       grfmsg(1, "ReadSpriteLayoutSprite: Spritelayout uses undefined custom spriteset %d for 'palette'", index);
00671       grf_sprite->pal = PAL_NONE;
00672     } else {
00673       SpriteID sprite = use_cur_spritesets ? _cur.GetSprite(feature, index) : index;
00674       if (max_palette_offset != NULL) *max_palette_offset = use_cur_spritesets ? _cur.GetNumEnts(feature, index) : UINT16_MAX;
00675       SB(grf_sprite->pal, 0, SPRITE_WIDTH, sprite);
00676       SetBit(grf_sprite->pal, SPRITE_MODIFIER_CUSTOM_SPRITE);
00677     }
00678   } else if ((flags & TLF_PALETTE_VAR10) && !(flags & TLF_PALETTE_REG_FLAGS)) {
00679     grfmsg(1, "ReadSpriteLayoutRegisters: Spritelayout specifies var10 value for non-action-1 palette");
00680     DisableGrf(STR_NEWGRF_ERROR_INVALID_SPRITE_LAYOUT);
00681     return flags;
00682   }
00683 
00684   return flags;
00685 }
00686 
00695 static void ReadSpriteLayoutRegisters(ByteReader *buf, TileLayoutFlags flags, bool is_parent, NewGRFSpriteLayout *dts, uint index)
00696 {
00697   if (!(flags & TLF_DRAWING_FLAGS)) return;
00698 
00699   if (dts->registers == NULL) dts->AllocateRegisters();
00700   TileLayoutRegisters &regs = const_cast<TileLayoutRegisters&>(dts->registers[index]);
00701   regs.flags = flags & TLF_DRAWING_FLAGS;
00702 
00703   if (flags & TLF_DODRAW)  regs.dodraw  = buf->ReadByte();
00704   if (flags & TLF_SPRITE)  regs.sprite  = buf->ReadByte();
00705   if (flags & TLF_PALETTE) regs.palette = buf->ReadByte();
00706 
00707   if (is_parent) {
00708     if (flags & TLF_BB_XY_OFFSET) {
00709       regs.delta.parent[0] = buf->ReadByte();
00710       regs.delta.parent[1] = buf->ReadByte();
00711     }
00712     if (flags & TLF_BB_Z_OFFSET)    regs.delta.parent[2] = buf->ReadByte();
00713   } else {
00714     if (flags & TLF_CHILD_X_OFFSET) regs.delta.child[0]  = buf->ReadByte();
00715     if (flags & TLF_CHILD_Y_OFFSET) regs.delta.child[1]  = buf->ReadByte();
00716   }
00717 
00718   if (flags & TLF_SPRITE_VAR10) {
00719     regs.sprite_var10 = buf->ReadByte();
00720     if (regs.sprite_var10 > TLR_MAX_VAR10) {
00721       grfmsg(1, "ReadSpriteLayoutRegisters: Spritelayout specifies var10 (%d) exceeding the maximal allowed value %d", regs.sprite_var10, TLR_MAX_VAR10);
00722       DisableGrf(STR_NEWGRF_ERROR_INVALID_SPRITE_LAYOUT);
00723       return;
00724     }
00725   }
00726 
00727   if (flags & TLF_PALETTE_VAR10) {
00728     regs.palette_var10 = buf->ReadByte();
00729     if (regs.palette_var10 > TLR_MAX_VAR10) {
00730       grfmsg(1, "ReadSpriteLayoutRegisters: Spritelayout specifies var10 (%d) exceeding the maximal allowed value %d", regs.palette_var10, TLR_MAX_VAR10);
00731       DisableGrf(STR_NEWGRF_ERROR_INVALID_SPRITE_LAYOUT);
00732       return;
00733     }
00734   }
00735 }
00736 
00748 static bool ReadSpriteLayout(ByteReader *buf, uint num_building_sprites, bool use_cur_spritesets, byte feature, bool allow_var10, bool no_z_position, NewGRFSpriteLayout *dts)
00749 {
00750   bool has_flags = HasBit(num_building_sprites, 6);
00751   ClrBit(num_building_sprites, 6);
00752   TileLayoutFlags valid_flags = TLF_KNOWN_FLAGS;
00753   if (!allow_var10) valid_flags &= ~TLF_VAR10_FLAGS;
00754   dts->Allocate(num_building_sprites); // allocate before reading groundsprite flags
00755 
00756   uint16 *max_sprite_offset = AllocaM(uint16, num_building_sprites + 1);
00757   uint16 *max_palette_offset = AllocaM(uint16, num_building_sprites + 1);
00758   MemSetT(max_sprite_offset, 0, num_building_sprites + 1);
00759   MemSetT(max_palette_offset, 0, num_building_sprites + 1);
00760 
00761   /* Groundsprite */
00762   TileLayoutFlags flags = ReadSpriteLayoutSprite(buf, has_flags, false, use_cur_spritesets, feature, &dts->ground, max_sprite_offset, max_palette_offset);
00763   if (_cur.skip_sprites < 0) return true;
00764 
00765   if (flags & ~(valid_flags & ~TLF_NON_GROUND_FLAGS)) {
00766     grfmsg(1, "ReadSpriteLayout: Spritelayout uses invalid flag 0x%x for ground sprite", flags & ~(valid_flags & ~TLF_NON_GROUND_FLAGS));
00767     DisableGrf(STR_NEWGRF_ERROR_INVALID_SPRITE_LAYOUT);
00768     return true;
00769   }
00770 
00771   ReadSpriteLayoutRegisters(buf, flags, false, dts, 0);
00772   if (_cur.skip_sprites < 0) return true;
00773 
00774   for (uint i = 0; i < num_building_sprites; i++) {
00775     DrawTileSeqStruct *seq = const_cast<DrawTileSeqStruct*>(&dts->seq[i]);
00776 
00777     flags = ReadSpriteLayoutSprite(buf, has_flags, false, use_cur_spritesets, feature, &seq->image, max_sprite_offset + i + 1, max_palette_offset + i + 1);
00778     if (_cur.skip_sprites < 0) return true;
00779 
00780     if (flags & ~valid_flags) {
00781       grfmsg(1, "ReadSpriteLayout: Spritelayout uses unknown flag 0x%x", flags & ~valid_flags);
00782       DisableGrf(STR_NEWGRF_ERROR_INVALID_SPRITE_LAYOUT);
00783       return true;
00784     }
00785 
00786     seq->delta_x = buf->ReadByte();
00787     seq->delta_y = buf->ReadByte();
00788 
00789     if (!no_z_position) seq->delta_z = buf->ReadByte();
00790 
00791     if (seq->IsParentSprite()) {
00792       seq->size_x = buf->ReadByte();
00793       seq->size_y = buf->ReadByte();
00794       seq->size_z = buf->ReadByte();
00795     }
00796 
00797     ReadSpriteLayoutRegisters(buf, flags, seq->IsParentSprite(), dts, i + 1);
00798     if (_cur.skip_sprites < 0) return true;
00799   }
00800 
00801   /* Check if the number of sprites per spriteset is consistent */
00802   bool is_consistent = true;
00803   dts->consistent_max_offset = 0;
00804   for (uint i = 0; i < num_building_sprites + 1; i++) {
00805     if (max_sprite_offset[i] > 0) {
00806       if (dts->consistent_max_offset == 0) {
00807         dts->consistent_max_offset = max_sprite_offset[i];
00808       } else if (dts->consistent_max_offset != max_sprite_offset[i]) {
00809         is_consistent = false;
00810         break;
00811       }
00812     }
00813     if (max_palette_offset[i] > 0) {
00814       if (dts->consistent_max_offset == 0) {
00815         dts->consistent_max_offset = max_palette_offset[i];
00816       } else if (dts->consistent_max_offset != max_palette_offset[i]) {
00817         is_consistent = false;
00818         break;
00819       }
00820     }
00821   }
00822 
00823   /* When the Action1 sets are unknown, everything should be 0 (no spriteset usage) or UINT16_MAX (some spriteset usage) */
00824   assert(use_cur_spritesets || (is_consistent && (dts->consistent_max_offset == 0 || dts->consistent_max_offset == UINT16_MAX)));
00825 
00826   if (!is_consistent || dts->registers != NULL) {
00827     dts->consistent_max_offset = 0;
00828     if (dts->registers == NULL) dts->AllocateRegisters();
00829 
00830     for (uint i = 0; i < num_building_sprites + 1; i++) {
00831       TileLayoutRegisters &regs = const_cast<TileLayoutRegisters&>(dts->registers[i]);
00832       regs.max_sprite_offset = max_sprite_offset[i];
00833       regs.max_palette_offset = max_palette_offset[i];
00834     }
00835   }
00836 
00837   return false;
00838 }
00839 
00843 static uint32 TranslateRefitMask(uint32 refit_mask)
00844 {
00845   uint32 result = 0;
00846   uint8 bit;
00847   FOR_EACH_SET_BIT(bit, refit_mask) {
00848     CargoID cargo = GetCargoTranslation(bit, _cur.grffile, true);
00849     if (cargo != CT_INVALID) SetBit(result, cargo);
00850   }
00851   return result;
00852 }
00853 
00861 static void ConvertTTDBasePrice(uint32 base_pointer, const char *error_location, Price *index)
00862 {
00863   /* Special value for 'none' */
00864   if (base_pointer == 0) {
00865     *index = INVALID_PRICE;
00866     return;
00867   }
00868 
00869   static const uint32 start = 0x4B34; 
00870   static const uint32 size  = 6;      
00871 
00872   if (base_pointer < start || (base_pointer - start) % size != 0 || (base_pointer - start) / size >= PR_END) {
00873     grfmsg(1, "%s: Unsupported running cost base 0x%04X, ignoring", error_location, base_pointer);
00874     return;
00875   }
00876 
00877   *index = (Price)((base_pointer - start) / size);
00878 }
00879 
00881 enum ChangeInfoResult {
00882   CIR_SUCCESS,    
00883   CIR_DISABLED,   
00884   CIR_UNHANDLED,  
00885   CIR_UNKNOWN,    
00886   CIR_INVALID_ID, 
00887 };
00888 
00889 typedef ChangeInfoResult (*VCI_Handler)(uint engine, int numinfo, int prop, ByteReader *buf);
00890 
00898 static ChangeInfoResult CommonVehicleChangeInfo(EngineInfo *ei, int prop, ByteReader *buf)
00899 {
00900   switch (prop) {
00901     case 0x00: // Introduction date
00902       ei->base_intro = buf->ReadWord() + DAYS_TILL_ORIGINAL_BASE_YEAR;
00903       break;
00904 
00905     case 0x02: // Decay speed
00906       ei->decay_speed = buf->ReadByte();
00907       break;
00908 
00909     case 0x03: // Vehicle life
00910       ei->lifelength = buf->ReadByte();
00911       break;
00912 
00913     case 0x04: // Model life
00914       ei->base_life = buf->ReadByte();
00915       break;
00916 
00917     case 0x06: // Climates available
00918       ei->climates = buf->ReadByte();
00919       break;
00920 
00921     case PROP_VEHICLE_LOAD_AMOUNT: // 0x07 Loading speed
00922       /* Amount of cargo loaded during a vehicle's "loading tick" */
00923       ei->load_amount = buf->ReadByte();
00924       break;
00925 
00926     default:
00927       return CIR_UNKNOWN;
00928   }
00929 
00930   return CIR_SUCCESS;
00931 }
00932 
00941 static ChangeInfoResult RailVehicleChangeInfo(uint engine, int numinfo, int prop, ByteReader *buf)
00942 {
00943   ChangeInfoResult ret = CIR_SUCCESS;
00944 
00945   for (int i = 0; i < numinfo; i++) {
00946     Engine *e = GetNewEngine(_cur.grffile, VEH_TRAIN, engine + i);
00947     if (e == NULL) return CIR_INVALID_ID; // No engine could be allocated, so neither can any next vehicles
00948 
00949     EngineInfo *ei = &e->info;
00950     RailVehicleInfo *rvi = &e->u.rail;
00951 
00952     switch (prop) {
00953       case 0x05: { // Track type
00954         uint8 tracktype = buf->ReadByte();
00955 
00956         if (tracktype < _cur.grffile->railtype_list.Length()) {
00957           _gted[e->index].railtypelabel = _cur.grffile->railtype_list[tracktype];
00958           break;
00959         }
00960 
00961         switch (tracktype) {
00962           case 0: _gted[e->index].railtypelabel = rvi->engclass >= 2 ? RAILTYPE_ELECTRIC_LABEL : RAILTYPE_RAIL_LABEL; break;
00963           case 1: _gted[e->index].railtypelabel = RAILTYPE_MONO_LABEL; break;
00964           case 2: _gted[e->index].railtypelabel = RAILTYPE_MAGLEV_LABEL; break;
00965           default:
00966             grfmsg(1, "RailVehicleChangeInfo: Invalid track type %d specified, ignoring", tracktype);
00967             break;
00968         }
00969         break;
00970       }
00971 
00972       case 0x08: // AI passenger service
00973         /* Tells the AI that this engine is designed for
00974          * passenger services and shouldn't be used for freight. */
00975         rvi->ai_passenger_only = buf->ReadByte();
00976         break;
00977 
00978       case PROP_TRAIN_SPEED: { // 0x09 Speed (1 unit is 1 km-ish/h)
00979         uint16 speed = buf->ReadWord();
00980         if (speed == 0xFFFF) speed = 0;
00981 
00982         rvi->max_speed = speed;
00983         break;
00984       }
00985 
00986       case PROP_TRAIN_POWER: // 0x0B Power
00987         rvi->power = buf->ReadWord();
00988 
00989         /* Set engine / wagon state based on power */
00990         if (rvi->power != 0) {
00991           if (rvi->railveh_type == RAILVEH_WAGON) {
00992             rvi->railveh_type = RAILVEH_SINGLEHEAD;
00993           }
00994         } else {
00995           rvi->railveh_type = RAILVEH_WAGON;
00996         }
00997         break;
00998 
00999       case PROP_TRAIN_RUNNING_COST_FACTOR: // 0x0D Running cost factor
01000         rvi->running_cost = buf->ReadByte();
01001         break;
01002 
01003       case 0x0E: // Running cost base
01004         ConvertTTDBasePrice(buf->ReadDWord(), "RailVehicleChangeInfo", &rvi->running_cost_class);
01005         break;
01006 
01007       case 0x12: { // Sprite ID
01008         uint8 spriteid = buf->ReadByte();
01009 
01010         /* TTD sprite IDs point to a location in a 16bit array, but we use it
01011          * as an array index, so we need it to be half the original value. */
01012         if (spriteid < 0xFD) spriteid >>= 1;
01013 
01014         rvi->image_index = spriteid;
01015         break;
01016       }
01017 
01018       case 0x13: { // Dual-headed
01019         uint8 dual = buf->ReadByte();
01020 
01021         if (dual != 0) {
01022           rvi->railveh_type = RAILVEH_MULTIHEAD;
01023         } else {
01024           rvi->railveh_type = rvi->power == 0 ?
01025             RAILVEH_WAGON : RAILVEH_SINGLEHEAD;
01026         }
01027         break;
01028       }
01029 
01030       case PROP_TRAIN_CARGO_CAPACITY: // 0x14 Cargo capacity
01031         rvi->capacity = buf->ReadByte();
01032         break;
01033 
01034       case 0x15: { // Cargo type
01035         _gted[e->index].defaultcargo_grf = _cur.grffile;
01036         uint8 ctype = buf->ReadByte();
01037 
01038         if (ctype == 0xFF) {
01039           /* 0xFF is specified as 'use first refittable' */
01040           ei->cargo_type = CT_INVALID;
01041         } else if (_cur.grffile->grf_version >= 8) {
01042           /* Use translated cargo. Might result in CT_INVALID (first refittable), if cargo is not defined. */
01043           ei->cargo_type = GetCargoTranslation(ctype, _cur.grffile);
01044         } else if (ctype < NUM_CARGO) {
01045           /* Use untranslated cargo. */
01046           ei->cargo_type = ctype;
01047         } else {
01048           ei->cargo_type = CT_INVALID;
01049           grfmsg(2, "RailVehicleChangeInfo: Invalid cargo type %d, using first refittable", ctype);
01050         }
01051         break;
01052       }
01053 
01054       case PROP_TRAIN_WEIGHT: // 0x16 Weight
01055         SB(rvi->weight, 0, 8, buf->ReadByte());
01056         break;
01057 
01058       case PROP_TRAIN_COST_FACTOR: // 0x17 Cost factor
01059         rvi->cost_factor = buf->ReadByte();
01060         break;
01061 
01062       case 0x18: // AI rank
01063         grfmsg(2, "RailVehicleChangeInfo: Property 0x18 'AI rank' not used by NoAI, ignored.");
01064         buf->ReadByte();
01065         break;
01066 
01067       case 0x19: { // Engine traction type
01068         /* What do the individual numbers mean?
01069          * 0x00 .. 0x07: Steam
01070          * 0x08 .. 0x27: Diesel
01071          * 0x28 .. 0x31: Electric
01072          * 0x32 .. 0x37: Monorail
01073          * 0x38 .. 0x41: Maglev
01074          */
01075         uint8 traction = buf->ReadByte();
01076         EngineClass engclass;
01077 
01078         if (traction <= 0x07) {
01079           engclass = EC_STEAM;
01080         } else if (traction <= 0x27) {
01081           engclass = EC_DIESEL;
01082         } else if (traction <= 0x31) {
01083           engclass = EC_ELECTRIC;
01084         } else if (traction <= 0x37) {
01085           engclass = EC_MONORAIL;
01086         } else if (traction <= 0x41) {
01087           engclass = EC_MAGLEV;
01088         } else {
01089           break;
01090         }
01091 
01092         if (_cur.grffile->railtype_list.Length() == 0) {
01093           /* Use traction type to select between normal and electrified
01094            * rail only when no translation list is in place. */
01095           if (_gted[e->index].railtypelabel == RAILTYPE_RAIL_LABEL     && engclass >= EC_ELECTRIC) _gted[e->index].railtypelabel = RAILTYPE_ELECTRIC_LABEL;
01096           if (_gted[e->index].railtypelabel == RAILTYPE_ELECTRIC_LABEL && engclass  < EC_ELECTRIC) _gted[e->index].railtypelabel = RAILTYPE_RAIL_LABEL;
01097         }
01098 
01099         rvi->engclass = engclass;
01100         break;
01101       }
01102 
01103       case 0x1A: // Alter purchase list sort order
01104         AlterVehicleListOrder(e->index, buf->ReadExtendedByte());
01105         break;
01106 
01107       case 0x1B: // Powered wagons power bonus
01108         rvi->pow_wag_power = buf->ReadWord();
01109         break;
01110 
01111       case 0x1C: // Refit cost
01112         ei->refit_cost = buf->ReadByte();
01113         break;
01114 
01115       case 0x1D: { // Refit cargo
01116         uint32 mask = buf->ReadDWord();
01117         _gted[e->index].UpdateRefittability(mask != 0);
01118         ei->refit_mask = TranslateRefitMask(mask);
01119         _gted[e->index].defaultcargo_grf = _cur.grffile;
01120         break;
01121       }
01122 
01123       case 0x1E: // Callback
01124         ei->callback_mask = buf->ReadByte();
01125         break;
01126 
01127       case PROP_TRAIN_TRACTIVE_EFFORT: // 0x1F Tractive effort coefficient
01128         rvi->tractive_effort = buf->ReadByte();
01129         break;
01130 
01131       case 0x20: // Air drag
01132         rvi->air_drag = buf->ReadByte();
01133         break;
01134 
01135       case PROP_TRAIN_SHORTEN_FACTOR: // 0x21 Shorter vehicle
01136         rvi->shorten_factor = buf->ReadByte();
01137         break;
01138 
01139       case 0x22: // Visual effect
01140         rvi->visual_effect = buf->ReadByte();
01141         /* Avoid accidentally setting visual_effect to the default value
01142          * Since bit 6 (disable effects) is set anyways, we can safely erase some bits. */
01143         if (rvi->visual_effect == VE_DEFAULT) {
01144           assert(HasBit(rvi->visual_effect, VE_DISABLE_EFFECT));
01145           SB(rvi->visual_effect, VE_TYPE_START, VE_TYPE_COUNT, 0);
01146         }
01147         break;
01148 
01149       case 0x23: // Powered wagons weight bonus
01150         rvi->pow_wag_weight = buf->ReadByte();
01151         break;
01152 
01153       case 0x24: { // High byte of vehicle weight
01154         byte weight = buf->ReadByte();
01155 
01156         if (weight > 4) {
01157           grfmsg(2, "RailVehicleChangeInfo: Nonsensical weight of %d tons, ignoring", weight << 8);
01158         } else {
01159           SB(rvi->weight, 8, 8, weight);
01160         }
01161         break;
01162       }
01163 
01164       case PROP_TRAIN_USER_DATA: // 0x25 User-defined bit mask to set when checking veh. var. 42
01165         rvi->user_def_data = buf->ReadByte();
01166         break;
01167 
01168       case 0x26: // Retire vehicle early
01169         ei->retire_early = buf->ReadByte();
01170         break;
01171 
01172       case 0x27: // Miscellaneous flags
01173         ei->misc_flags = buf->ReadByte();
01174         _loaded_newgrf_features.has_2CC |= HasBit(ei->misc_flags, EF_USES_2CC);
01175         _gted[e->index].prop27_set = true;
01176         break;
01177 
01178       case 0x28: // Cargo classes allowed
01179         _gted[e->index].cargo_allowed = buf->ReadWord();
01180         _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0);
01181         _gted[e->index].defaultcargo_grf = _cur.grffile;
01182         break;
01183 
01184       case 0x29: // Cargo classes disallowed
01185         _gted[e->index].cargo_disallowed = buf->ReadWord();
01186         _gted[e->index].UpdateRefittability(false);
01187         break;
01188 
01189       case 0x2A: // Long format introduction date (days since year 0)
01190         ei->base_intro = buf->ReadDWord();
01191         break;
01192 
01193       case PROP_TRAIN_CARGO_AGE_PERIOD: // 0x2B Cargo aging period
01194         ei->cargo_age_period = buf->ReadWord();
01195         break;
01196 
01197       case 0x2C:   // CTT refit include list
01198       case 0x2D: { // CTT refit exclude list
01199         uint8 count = buf->ReadByte();
01200         _gted[e->index].UpdateRefittability(prop == 0x2C && count != 0);
01201         if (prop == 0x2C) _gted[e->index].defaultcargo_grf = _cur.grffile;
01202         uint32 &ctt = prop == 0x2C ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask;
01203         ctt = 0;
01204         while (count--) {
01205           CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
01206           if (ctype == CT_INVALID) continue;
01207           SetBit(ctt, ctype);
01208         }
01209         break;
01210       }
01211 
01212       default:
01213         ret = CommonVehicleChangeInfo(ei, prop, buf);
01214         break;
01215     }
01216   }
01217 
01218   return ret;
01219 }
01220 
01229 static ChangeInfoResult RoadVehicleChangeInfo(uint engine, int numinfo, int prop, ByteReader *buf)
01230 {
01231   ChangeInfoResult ret = CIR_SUCCESS;
01232 
01233   for (int i = 0; i < numinfo; i++) {
01234     Engine *e = GetNewEngine(_cur.grffile, VEH_ROAD, engine + i);
01235     if (e == NULL) return CIR_INVALID_ID; // No engine could be allocated, so neither can any next vehicles
01236 
01237     EngineInfo *ei = &e->info;
01238     RoadVehicleInfo *rvi = &e->u.road;
01239 
01240     switch (prop) {
01241       case 0x08: // Speed (1 unit is 0.5 kmh)
01242         rvi->max_speed = buf->ReadByte();
01243         break;
01244 
01245       case PROP_ROADVEH_RUNNING_COST_FACTOR: // 0x09 Running cost factor
01246         rvi->running_cost = buf->ReadByte();
01247         break;
01248 
01249       case 0x0A: // Running cost base
01250         ConvertTTDBasePrice(buf->ReadDWord(), "RoadVehicleChangeInfo", &rvi->running_cost_class);
01251         break;
01252 
01253       case 0x0E: { // Sprite ID
01254         uint8 spriteid = buf->ReadByte();
01255 
01256         /* cars have different custom id in the GRF file */
01257         if (spriteid == 0xFF) spriteid = 0xFD;
01258 
01259         if (spriteid < 0xFD) spriteid >>= 1;
01260 
01261         rvi->image_index = spriteid;
01262         break;
01263       }
01264 
01265       case PROP_ROADVEH_CARGO_CAPACITY: // 0x0F Cargo capacity
01266         rvi->capacity = buf->ReadByte();
01267         break;
01268 
01269       case 0x10: { // Cargo type
01270         _gted[e->index].defaultcargo_grf = _cur.grffile;
01271         uint8 ctype = buf->ReadByte();
01272 
01273         if (ctype == 0xFF) {
01274           /* 0xFF is specified as 'use first refittable' */
01275           ei->cargo_type = CT_INVALID;
01276         } else if (_cur.grffile->grf_version >= 8) {
01277           /* Use translated cargo. Might result in CT_INVALID (first refittable), if cargo is not defined. */
01278           ei->cargo_type = GetCargoTranslation(ctype, _cur.grffile);
01279         } else if (ctype < NUM_CARGO) {
01280           /* Use untranslated cargo. */
01281           ei->cargo_type = ctype;
01282         } else {
01283           ei->cargo_type = CT_INVALID;
01284           grfmsg(2, "RailVehicleChangeInfo: Invalid cargo type %d, using first refittable", ctype);
01285         }
01286         break;
01287       }
01288 
01289       case PROP_ROADVEH_COST_FACTOR: // 0x11 Cost factor
01290         rvi->cost_factor = buf->ReadByte();
01291         break;
01292 
01293       case 0x12: // SFX
01294         rvi->sfx = buf->ReadByte();
01295         break;
01296 
01297       case PROP_ROADVEH_POWER: // Power in units of 10 HP.
01298         rvi->power = buf->ReadByte();
01299         break;
01300 
01301       case PROP_ROADVEH_WEIGHT: // Weight in units of 1/4 tons.
01302         rvi->weight = buf->ReadByte();
01303         break;
01304 
01305       case PROP_ROADVEH_SPEED: // Speed in mph/0.8
01306         _gted[e->index].rv_max_speed = buf->ReadByte();
01307         break;
01308 
01309       case 0x16: { // Cargoes available for refitting
01310         uint32 mask = buf->ReadDWord();
01311         _gted[e->index].UpdateRefittability(mask != 0);
01312         ei->refit_mask = TranslateRefitMask(mask);
01313         _gted[e->index].defaultcargo_grf = _cur.grffile;
01314         break;
01315       }
01316 
01317       case 0x17: // Callback mask
01318         ei->callback_mask = buf->ReadByte();
01319         break;
01320 
01321       case PROP_ROADVEH_TRACTIVE_EFFORT: // Tractive effort coefficient in 1/256.
01322         rvi->tractive_effort = buf->ReadByte();
01323         break;
01324 
01325       case 0x19: // Air drag
01326         rvi->air_drag = buf->ReadByte();
01327         break;
01328 
01329       case 0x1A: // Refit cost
01330         ei->refit_cost = buf->ReadByte();
01331         break;
01332 
01333       case 0x1B: // Retire vehicle early
01334         ei->retire_early = buf->ReadByte();
01335         break;
01336 
01337       case 0x1C: // Miscellaneous flags
01338         ei->misc_flags = buf->ReadByte();
01339         _loaded_newgrf_features.has_2CC |= HasBit(ei->misc_flags, EF_USES_2CC);
01340         break;
01341 
01342       case 0x1D: // Cargo classes allowed
01343         _gted[e->index].cargo_allowed = buf->ReadWord();
01344         _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0);
01345         _gted[e->index].defaultcargo_grf = _cur.grffile;
01346         break;
01347 
01348       case 0x1E: // Cargo classes disallowed
01349         _gted[e->index].cargo_disallowed = buf->ReadWord();
01350         _gted[e->index].UpdateRefittability(false);
01351         break;
01352 
01353       case 0x1F: // Long format introduction date (days since year 0)
01354         ei->base_intro = buf->ReadDWord();
01355         break;
01356 
01357       case 0x20: // Alter purchase list sort order
01358         AlterVehicleListOrder(e->index, buf->ReadExtendedByte());
01359         break;
01360 
01361       case 0x21: // Visual effect
01362         rvi->visual_effect = buf->ReadByte();
01363         /* Avoid accidentally setting visual_effect to the default value
01364          * Since bit 6 (disable effects) is set anyways, we can safely erase some bits. */
01365         if (rvi->visual_effect == VE_DEFAULT) {
01366           assert(HasBit(rvi->visual_effect, VE_DISABLE_EFFECT));
01367           SB(rvi->visual_effect, VE_TYPE_START, VE_TYPE_COUNT, 0);
01368         }
01369         break;
01370 
01371       case PROP_ROADVEH_CARGO_AGE_PERIOD: // 0x22 Cargo aging period
01372         ei->cargo_age_period = buf->ReadWord();
01373         break;
01374 
01375       case PROP_ROADVEH_SHORTEN_FACTOR: // 0x23 Shorter vehicle
01376         rvi->shorten_factor = buf->ReadByte();
01377         break;
01378 
01379       case 0x24:   // CTT refit include list
01380       case 0x25: { // CTT refit exclude list
01381         uint8 count = buf->ReadByte();
01382         _gted[e->index].UpdateRefittability(prop == 0x24 && count != 0);
01383         if (prop == 0x24) _gted[e->index].defaultcargo_grf = _cur.grffile;
01384         uint32 &ctt = prop == 0x24 ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask;
01385         ctt = 0;
01386         while (count--) {
01387           CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
01388           if (ctype == CT_INVALID) continue;
01389           SetBit(ctt, ctype);
01390         }
01391         break;
01392       }
01393 
01394       default:
01395         ret = CommonVehicleChangeInfo(ei, prop, buf);
01396         break;
01397     }
01398   }
01399 
01400   return ret;
01401 }
01402 
01411 static ChangeInfoResult ShipVehicleChangeInfo(uint engine, int numinfo, int prop, ByteReader *buf)
01412 {
01413   ChangeInfoResult ret = CIR_SUCCESS;
01414 
01415   for (int i = 0; i < numinfo; i++) {
01416     Engine *e = GetNewEngine(_cur.grffile, VEH_SHIP, engine + i);
01417     if (e == NULL) return CIR_INVALID_ID; // No engine could be allocated, so neither can any next vehicles
01418 
01419     EngineInfo *ei = &e->info;
01420     ShipVehicleInfo *svi = &e->u.ship;
01421 
01422     switch (prop) {
01423       case 0x08: { // Sprite ID
01424         uint8 spriteid = buf->ReadByte();
01425 
01426         /* ships have different custom id in the GRF file */
01427         if (spriteid == 0xFF) spriteid = 0xFD;
01428 
01429         if (spriteid < 0xFD) spriteid >>= 1;
01430 
01431         svi->image_index = spriteid;
01432         break;
01433       }
01434 
01435       case 0x09: // Refittable
01436         svi->old_refittable = (buf->ReadByte() != 0);
01437         break;
01438 
01439       case PROP_SHIP_COST_FACTOR: // 0x0A Cost factor
01440         svi->cost_factor = buf->ReadByte();
01441         break;
01442 
01443       case PROP_SHIP_SPEED: // 0x0B Speed (1 unit is 0.5 km-ish/h)
01444         svi->max_speed = buf->ReadByte();
01445         break;
01446 
01447       case 0x0C: { // Cargo type
01448         _gted[e->index].defaultcargo_grf = _cur.grffile;
01449         uint8 ctype = buf->ReadByte();
01450 
01451         if (ctype == 0xFF) {
01452           /* 0xFF is specified as 'use first refittable' */
01453           ei->cargo_type = CT_INVALID;
01454         } else if (_cur.grffile->grf_version >= 8) {
01455           /* Use translated cargo. Might result in CT_INVALID (first refittable), if cargo is not defined. */
01456           ei->cargo_type = GetCargoTranslation(ctype, _cur.grffile);
01457         } else if (ctype < NUM_CARGO) {
01458           /* Use untranslated cargo. */
01459           ei->cargo_type = ctype;
01460         } else {
01461           ei->cargo_type = CT_INVALID;
01462           grfmsg(2, "RailVehicleChangeInfo: Invalid cargo type %d, using first refittable", ctype);
01463         }
01464         break;
01465       }
01466 
01467       case PROP_SHIP_CARGO_CAPACITY: // 0x0D Cargo capacity
01468         svi->capacity = buf->ReadWord();
01469         break;
01470 
01471       case PROP_SHIP_RUNNING_COST_FACTOR: // 0x0F Running cost factor
01472         svi->running_cost = buf->ReadByte();
01473         break;
01474 
01475       case 0x10: // SFX
01476         svi->sfx = buf->ReadByte();
01477         break;
01478 
01479       case 0x11: { // Cargoes available for refitting
01480         uint32 mask = buf->ReadDWord();
01481         _gted[e->index].UpdateRefittability(mask != 0);
01482         ei->refit_mask = TranslateRefitMask(mask);
01483         _gted[e->index].defaultcargo_grf = _cur.grffile;
01484         break;
01485       }
01486 
01487       case 0x12: // Callback mask
01488         ei->callback_mask = buf->ReadByte();
01489         break;
01490 
01491       case 0x13: // Refit cost
01492         ei->refit_cost = buf->ReadByte();
01493         break;
01494 
01495       case 0x14: // Ocean speed fraction
01496         svi->ocean_speed_frac = buf->ReadByte();
01497         break;
01498 
01499       case 0x15: // Canal speed fraction
01500         svi->canal_speed_frac = buf->ReadByte();
01501         break;
01502 
01503       case 0x16: // Retire vehicle early
01504         ei->retire_early = buf->ReadByte();
01505         break;
01506 
01507       case 0x17: // Miscellaneous flags
01508         ei->misc_flags = buf->ReadByte();
01509         _loaded_newgrf_features.has_2CC |= HasBit(ei->misc_flags, EF_USES_2CC);
01510         break;
01511 
01512       case 0x18: // Cargo classes allowed
01513         _gted[e->index].cargo_allowed = buf->ReadWord();
01514         _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0);
01515         _gted[e->index].defaultcargo_grf = _cur.grffile;
01516         break;
01517 
01518       case 0x19: // Cargo classes disallowed
01519         _gted[e->index].cargo_disallowed = buf->ReadWord();
01520         _gted[e->index].UpdateRefittability(false);
01521         break;
01522 
01523       case 0x1A: // Long format introduction date (days since year 0)
01524         ei->base_intro = buf->ReadDWord();
01525         break;
01526 
01527       case 0x1B: // Alter purchase list sort order
01528         AlterVehicleListOrder(e->index, buf->ReadExtendedByte());
01529         break;
01530 
01531       case 0x1C: // Visual effect
01532         svi->visual_effect = buf->ReadByte();
01533         /* Avoid accidentally setting visual_effect to the default value
01534          * Since bit 6 (disable effects) is set anyways, we can safely erase some bits. */
01535         if (svi->visual_effect == VE_DEFAULT) {
01536           assert(HasBit(svi->visual_effect, VE_DISABLE_EFFECT));
01537           SB(svi->visual_effect, VE_TYPE_START, VE_TYPE_COUNT, 0);
01538         }
01539         break;
01540 
01541       case PROP_SHIP_CARGO_AGE_PERIOD: // 0x1D Cargo aging period
01542         ei->cargo_age_period = buf->ReadWord();
01543         break;
01544 
01545       case 0x1E:   // CTT refit include list
01546       case 0x1F: { // CTT refit exclude list
01547         uint8 count = buf->ReadByte();
01548         _gted[e->index].UpdateRefittability(prop == 0x1E && count != 0);
01549         if (prop == 0x1E) _gted[e->index].defaultcargo_grf = _cur.grffile;
01550         uint32 &ctt = prop == 0x1E ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask;
01551         ctt = 0;
01552         while (count--) {
01553           CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
01554           if (ctype == CT_INVALID) continue;
01555           SetBit(ctt, ctype);
01556         }
01557         break;
01558       }
01559 
01560       default:
01561         ret = CommonVehicleChangeInfo(ei, prop, buf);
01562         break;
01563     }
01564   }
01565 
01566   return ret;
01567 }
01568 
01577 static ChangeInfoResult AircraftVehicleChangeInfo(uint engine, int numinfo, int prop, ByteReader *buf)
01578 {
01579   ChangeInfoResult ret = CIR_SUCCESS;
01580 
01581   for (int i = 0; i < numinfo; i++) {
01582     Engine *e = GetNewEngine(_cur.grffile, VEH_AIRCRAFT, engine + i);
01583     if (e == NULL) return CIR_INVALID_ID; // No engine could be allocated, so neither can any next vehicles
01584 
01585     EngineInfo *ei = &e->info;
01586     AircraftVehicleInfo *avi = &e->u.air;
01587 
01588     switch (prop) {
01589       case 0x08: { // Sprite ID
01590         uint8 spriteid = buf->ReadByte();
01591 
01592         /* aircraft have different custom id in the GRF file */
01593         if (spriteid == 0xFF) spriteid = 0xFD;
01594 
01595         if (spriteid < 0xFD) spriteid >>= 1;
01596 
01597         avi->image_index = spriteid;
01598         break;
01599       }
01600 
01601       case 0x09: // Helicopter
01602         if (buf->ReadByte() == 0) {
01603           avi->subtype = AIR_HELI;
01604         } else {
01605           SB(avi->subtype, 0, 1, 1); // AIR_CTOL
01606         }
01607         break;
01608 
01609       case 0x0A: // Large
01610         SB(avi->subtype, 1, 1, (buf->ReadByte() != 0 ? 1 : 0)); // AIR_FAST
01611         break;
01612 
01613       case PROP_AIRCRAFT_COST_FACTOR: // 0x0B Cost factor
01614         avi->cost_factor = buf->ReadByte();
01615         break;
01616 
01617       case PROP_AIRCRAFT_SPEED: // 0x0C Speed (1 unit is 8 mph, we translate to 1 unit is 1 km-ish/h)
01618         avi->max_speed = (buf->ReadByte() * 128) / 10;
01619         break;
01620 
01621       case 0x0D: // Acceleration
01622         avi->acceleration = buf->ReadByte();
01623         break;
01624 
01625       case PROP_AIRCRAFT_RUNNING_COST_FACTOR: // 0x0E Running cost factor
01626         avi->running_cost = buf->ReadByte();
01627         break;
01628 
01629       case PROP_AIRCRAFT_PASSENGER_CAPACITY: // 0x0F Passenger capacity
01630         avi->passenger_capacity = buf->ReadWord();
01631         break;
01632 
01633       case PROP_AIRCRAFT_MAIL_CAPACITY: // 0x11 Mail capacity
01634         avi->mail_capacity = buf->ReadByte();
01635         break;
01636 
01637       case 0x12: // SFX
01638         avi->sfx = buf->ReadByte();
01639         break;
01640 
01641       case 0x13: { // Cargoes available for refitting
01642         uint32 mask = buf->ReadDWord();
01643         _gted[e->index].UpdateRefittability(mask != 0);
01644         ei->refit_mask = TranslateRefitMask(mask);
01645         _gted[e->index].defaultcargo_grf = _cur.grffile;
01646         break;
01647       }
01648 
01649       case 0x14: // Callback mask
01650         ei->callback_mask = buf->ReadByte();
01651         break;
01652 
01653       case 0x15: // Refit cost
01654         ei->refit_cost = buf->ReadByte();
01655         break;
01656 
01657       case 0x16: // Retire vehicle early
01658         ei->retire_early = buf->ReadByte();
01659         break;
01660 
01661       case 0x17: // Miscellaneous flags
01662         ei->misc_flags = buf->ReadByte();
01663         _loaded_newgrf_features.has_2CC |= HasBit(ei->misc_flags, EF_USES_2CC);
01664         break;
01665 
01666       case 0x18: // Cargo classes allowed
01667         _gted[e->index].cargo_allowed = buf->ReadWord();
01668         _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0);
01669         _gted[e->index].defaultcargo_grf = _cur.grffile;
01670         break;
01671 
01672       case 0x19: // Cargo classes disallowed
01673         _gted[e->index].cargo_disallowed = buf->ReadWord();
01674         _gted[e->index].UpdateRefittability(false);
01675         break;
01676 
01677       case 0x1A: // Long format introduction date (days since year 0)
01678         ei->base_intro = buf->ReadDWord();
01679         break;
01680 
01681       case 0x1B: // Alter purchase list sort order
01682         AlterVehicleListOrder(e->index, buf->ReadExtendedByte());
01683         break;
01684 
01685       case PROP_AIRCRAFT_CARGO_AGE_PERIOD: // 0x1C Cargo aging period
01686         ei->cargo_age_period = buf->ReadWord();
01687         break;
01688 
01689       case 0x1D:   // CTT refit include list
01690       case 0x1E: { // CTT refit exclude list
01691         uint8 count = buf->ReadByte();
01692         _gted[e->index].UpdateRefittability(prop == 0x1D && count != 0);
01693         if (prop == 0x1D) _gted[e->index].defaultcargo_grf = _cur.grffile;
01694         uint32 &ctt = prop == 0x1D ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask;
01695         ctt = 0;
01696         while (count--) {
01697           CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
01698           if (ctype == CT_INVALID) continue;
01699           SetBit(ctt, ctype);
01700         }
01701         break;
01702       }
01703 
01704       case PROP_AIRCRAFT_RANGE: // 0x1F Max aircraft range
01705         avi->max_range = buf->ReadWord();
01706         break;
01707 
01708       default:
01709         ret = CommonVehicleChangeInfo(ei, prop, buf);
01710         break;
01711     }
01712   }
01713 
01714   return ret;
01715 }
01716 
01725 static ChangeInfoResult StationChangeInfo(uint stid, int numinfo, int prop, ByteReader *buf)
01726 {
01727   ChangeInfoResult ret = CIR_SUCCESS;
01728 
01729   if (stid + numinfo > MAX_STATIONS) {
01730     grfmsg(1, "StationChangeInfo: Station %u is invalid, max %u, ignoring", stid + numinfo, MAX_STATIONS);
01731     return CIR_INVALID_ID;
01732   }
01733 
01734   /* Allocate station specs if necessary */
01735   if (_cur.grffile->stations == NULL) _cur.grffile->stations = CallocT<StationSpec*>(MAX_STATIONS);
01736 
01737   for (int i = 0; i < numinfo; i++) {
01738     StationSpec *statspec = _cur.grffile->stations[stid + i];
01739 
01740     /* Check that the station we are modifying is defined. */
01741     if (statspec == NULL && prop != 0x08) {
01742       grfmsg(2, "StationChangeInfo: Attempt to modify undefined station %u, ignoring", stid + i);
01743       return CIR_INVALID_ID;
01744     }
01745 
01746     switch (prop) {
01747       case 0x08: { // Class ID
01748         StationSpec **spec = &_cur.grffile->stations[stid + i];
01749 
01750         /* Property 0x08 is special; it is where the station is allocated */
01751         if (*spec == NULL) *spec = CallocT<StationSpec>(1);
01752 
01753         /* Swap classid because we read it in BE meaning WAYP or DFLT */
01754         uint32 classid = buf->ReadDWord();
01755         (*spec)->cls_id = StationClass::Allocate(BSWAP32(classid));
01756         break;
01757       }
01758 
01759       case 0x09: // Define sprite layout
01760         statspec->tiles = buf->ReadExtendedByte();
01761         delete[] statspec->renderdata; // delete earlier loaded stuff
01762         statspec->renderdata = new NewGRFSpriteLayout[statspec->tiles];
01763 
01764         for (uint t = 0; t < statspec->tiles; t++) {
01765           NewGRFSpriteLayout *dts = &statspec->renderdata[t];
01766           dts->consistent_max_offset = UINT16_MAX; // Spritesets are unknown, so no limit.
01767 
01768           if (buf->HasData(4) && *(uint32*)buf->Data() == 0) {
01769             buf->Skip(4);
01770             extern const DrawTileSprites _station_display_datas_rail[8];
01771             dts->Clone(&_station_display_datas_rail[t % 8]);
01772             continue;
01773           }
01774 
01775           ReadSpriteLayoutSprite(buf, false, false, false, GSF_STATIONS, &dts->ground);
01776           /* On error, bail out immediately. Temporary GRF data was already freed */
01777           if (_cur.skip_sprites < 0) return CIR_DISABLED;
01778 
01779           static SmallVector<DrawTileSeqStruct, 8> tmp_layout;
01780           tmp_layout.Clear();
01781           for (;;) {
01782             /* no relative bounding box support */
01783             DrawTileSeqStruct *dtss = tmp_layout.Append();
01784             MemSetT(dtss, 0);
01785 
01786             dtss->delta_x = buf->ReadByte();
01787             if (dtss->IsTerminator()) break;
01788             dtss->delta_y = buf->ReadByte();
01789             dtss->delta_z = buf->ReadByte();
01790             dtss->size_x = buf->ReadByte();
01791             dtss->size_y = buf->ReadByte();
01792             dtss->size_z = buf->ReadByte();
01793 
01794             ReadSpriteLayoutSprite(buf, false, true, false, GSF_STATIONS, &dtss->image);
01795             /* On error, bail out immediately. Temporary GRF data was already freed */
01796             if (_cur.skip_sprites < 0) return CIR_DISABLED;
01797           }
01798           dts->Clone(tmp_layout.Begin());
01799         }
01800         break;
01801 
01802       case 0x0A: { // Copy sprite layout
01803         byte srcid = buf->ReadByte();
01804         const StationSpec *srcstatspec = _cur.grffile->stations[srcid];
01805 
01806         if (srcstatspec == NULL) {
01807           grfmsg(1, "StationChangeInfo: Station %u is not defined, cannot copy sprite layout to %u.", srcid, stid + i);
01808           continue;
01809         }
01810 
01811         delete[] statspec->renderdata; // delete earlier loaded stuff
01812 
01813         statspec->tiles = srcstatspec->tiles;
01814         statspec->renderdata = new NewGRFSpriteLayout[statspec->tiles];
01815         for (uint t = 0; t < statspec->tiles; t++) {
01816           statspec->renderdata[t].Clone(&srcstatspec->renderdata[t]);
01817         }
01818         break;
01819       }
01820 
01821       case 0x0B: // Callback mask
01822         statspec->callback_mask = buf->ReadByte();
01823         break;
01824 
01825       case 0x0C: // Disallowed number of platforms
01826         statspec->disallowed_platforms = buf->ReadByte();
01827         break;
01828 
01829       case 0x0D: // Disallowed platform lengths
01830         statspec->disallowed_lengths = buf->ReadByte();
01831         break;
01832 
01833       case 0x0E: // Define custom layout
01834         statspec->copied_layouts = false;
01835 
01836         while (buf->HasData()) {
01837           byte length = buf->ReadByte();
01838           byte number = buf->ReadByte();
01839           StationLayout layout;
01840           uint l, p;
01841 
01842           if (length == 0 || number == 0) break;
01843 
01844           if (length > statspec->lengths) {
01845             statspec->platforms = ReallocT(statspec->platforms, length);
01846             memset(statspec->platforms + statspec->lengths, 0, length - statspec->lengths);
01847 
01848             statspec->layouts = ReallocT(statspec->layouts, length);
01849             memset(statspec->layouts + statspec->lengths, 0,
01850                    (length - statspec->lengths) * sizeof(*statspec->layouts));
01851 
01852             statspec->lengths = length;
01853           }
01854           l = length - 1; // index is zero-based
01855 
01856           if (number > statspec->platforms[l]) {
01857             statspec->layouts[l] = ReallocT(statspec->layouts[l], number);
01858             /* We expect NULL being 0 here, but C99 guarantees that. */
01859             memset(statspec->layouts[l] + statspec->platforms[l], 0,
01860                    (number - statspec->platforms[l]) * sizeof(**statspec->layouts));
01861 
01862             statspec->platforms[l] = number;
01863           }
01864 
01865           p = 0;
01866           layout = MallocT<byte>(length * number);
01867           try {
01868             for (l = 0; l < length; l++) {
01869               for (p = 0; p < number; p++) {
01870                 layout[l * number + p] = buf->ReadByte();
01871               }
01872             }
01873           } catch (...) {
01874             free(layout);
01875             throw;
01876           }
01877 
01878           l--;
01879           p--;
01880           free(statspec->layouts[l][p]);
01881           statspec->layouts[l][p] = layout;
01882         }
01883         break;
01884 
01885       case 0x0F: { // Copy custom layout
01886         byte srcid = buf->ReadByte();
01887         const StationSpec *srcstatspec = _cur.grffile->stations[srcid];
01888 
01889         if (srcstatspec == NULL) {
01890           grfmsg(1, "StationChangeInfo: Station %u is not defined, cannot copy tile layout to %u.", srcid, stid + i);
01891           continue;
01892         }
01893 
01894         statspec->lengths   = srcstatspec->lengths;
01895         statspec->platforms = srcstatspec->platforms;
01896         statspec->layouts   = srcstatspec->layouts;
01897         statspec->copied_layouts = true;
01898         break;
01899       }
01900 
01901       case 0x10: // Little/lots cargo threshold
01902         statspec->cargo_threshold = buf->ReadWord();
01903         break;
01904 
01905       case 0x11: // Pylon placement
01906         statspec->pylons = buf->ReadByte();
01907         break;
01908 
01909       case 0x12: // Cargo types for random triggers
01910         statspec->cargo_triggers = buf->ReadDWord();
01911         if (_cur.grffile->grf_version >= 7) {
01912           statspec->cargo_triggers = TranslateRefitMask(statspec->cargo_triggers);
01913         }
01914         break;
01915 
01916       case 0x13: // General flags
01917         statspec->flags = buf->ReadByte();
01918         break;
01919 
01920       case 0x14: // Overhead wire placement
01921         statspec->wires = buf->ReadByte();
01922         break;
01923 
01924       case 0x15: // Blocked tiles
01925         statspec->blocked = buf->ReadByte();
01926         break;
01927 
01928       case 0x16: // Animation info
01929         statspec->animation.frames = buf->ReadByte();
01930         statspec->animation.status = buf->ReadByte();
01931         break;
01932 
01933       case 0x17: // Animation speed
01934         statspec->animation.speed = buf->ReadByte();
01935         break;
01936 
01937       case 0x18: // Animation triggers
01938         statspec->animation.triggers = buf->ReadWord();
01939         break;
01940 
01941       case 0x1A: // Advanced sprite layout
01942         statspec->tiles = buf->ReadExtendedByte();
01943         delete[] statspec->renderdata; // delete earlier loaded stuff
01944         statspec->renderdata = new NewGRFSpriteLayout[statspec->tiles];
01945 
01946         for (uint t = 0; t < statspec->tiles; t++) {
01947           NewGRFSpriteLayout *dts = &statspec->renderdata[t];
01948           uint num_building_sprites = buf->ReadByte();
01949           /* On error, bail out immediately. Temporary GRF data was already freed */
01950           if (ReadSpriteLayout(buf, num_building_sprites, false, GSF_STATIONS, true, false, dts)) return CIR_DISABLED;
01951         }
01952         break;
01953 
01954       default:
01955         ret = CIR_UNKNOWN;
01956         break;
01957     }
01958   }
01959 
01960   return ret;
01961 }
01962 
01971 static ChangeInfoResult CanalChangeInfo(uint id, int numinfo, int prop, ByteReader *buf)
01972 {
01973   ChangeInfoResult ret = CIR_SUCCESS;
01974 
01975   if (id + numinfo > CF_END) {
01976     grfmsg(1, "CanalChangeInfo: Canal feature %u is invalid, max %u, ignoring", id + numinfo, CF_END);
01977     return CIR_INVALID_ID;
01978   }
01979 
01980   for (int i = 0; i < numinfo; i++) {
01981     CanalProperties *cp = &_cur.grffile->canal_local_properties[id + i];
01982 
01983     switch (prop) {
01984       case 0x08:
01985         cp->callback_mask = buf->ReadByte();
01986         break;
01987 
01988       case 0x09:
01989         cp->flags = buf->ReadByte();
01990         break;
01991 
01992       default:
01993         ret = CIR_UNKNOWN;
01994         break;
01995     }
01996   }
01997 
01998   return ret;
01999 }
02000 
02009 static ChangeInfoResult BridgeChangeInfo(uint brid, int numinfo, int prop, ByteReader *buf)
02010 {
02011   ChangeInfoResult ret = CIR_SUCCESS;
02012 
02013   if (brid + numinfo > MAX_BRIDGES) {
02014     grfmsg(1, "BridgeChangeInfo: Bridge %u is invalid, max %u, ignoring", brid + numinfo, MAX_BRIDGES);
02015     return CIR_INVALID_ID;
02016   }
02017 
02018   for (int i = 0; i < numinfo; i++) {
02019     BridgeSpec *bridge = &_bridge[brid + i];
02020 
02021     switch (prop) {
02022       case 0x08: { // Year of availability
02023         /* We treat '0' as always available */
02024         byte year = buf->ReadByte();
02025         bridge->avail_year = (year > 0 ? ORIGINAL_BASE_YEAR + year : 0);
02026         break;
02027       }
02028 
02029       case 0x09: // Minimum length
02030         bridge->min_length = buf->ReadByte();
02031         break;
02032 
02033       case 0x0A: // Maximum length
02034         bridge->max_length = buf->ReadByte();
02035         if (bridge->max_length > 16) bridge->max_length = 0xFFFF;
02036         break;
02037 
02038       case 0x0B: // Cost factor
02039         bridge->price = buf->ReadByte();
02040         break;
02041 
02042       case 0x0C: // Maximum speed
02043         bridge->speed = buf->ReadWord();
02044         break;
02045 
02046       case 0x0D: { // Bridge sprite tables
02047         byte tableid = buf->ReadByte();
02048         byte numtables = buf->ReadByte();
02049 
02050         if (bridge->sprite_table == NULL) {
02051           /* Allocate memory for sprite table pointers and zero out */
02052           bridge->sprite_table = CallocT<PalSpriteID*>(7);
02053         }
02054 
02055         for (; numtables-- != 0; tableid++) {
02056           if (tableid >= 7) { // skip invalid data
02057             grfmsg(1, "BridgeChangeInfo: Table %d >= 7, skipping", tableid);
02058             for (byte sprite = 0; sprite < 32; sprite++) buf->ReadDWord();
02059             continue;
02060           }
02061 
02062           if (bridge->sprite_table[tableid] == NULL) {
02063             bridge->sprite_table[tableid] = MallocT<PalSpriteID>(32);
02064           }
02065 
02066           for (byte sprite = 0; sprite < 32; sprite++) {
02067             SpriteID image = buf->ReadWord();
02068             PaletteID pal  = buf->ReadWord();
02069 
02070             bridge->sprite_table[tableid][sprite].sprite = image;
02071             bridge->sprite_table[tableid][sprite].pal    = pal;
02072 
02073             MapSpriteMappingRecolour(&bridge->sprite_table[tableid][sprite]);
02074           }
02075         }
02076         break;
02077       }
02078 
02079       case 0x0E: // Flags; bit 0 - disable far pillars
02080         bridge->flags = buf->ReadByte();
02081         break;
02082 
02083       case 0x0F: // Long format year of availability (year since year 0)
02084         bridge->avail_year = Clamp(buf->ReadDWord(), MIN_YEAR, MAX_YEAR);
02085         break;
02086 
02087       case 0x10: { // purchase string
02088         StringID newone = GetGRFStringID(_cur.grffile->grfid, buf->ReadWord());
02089         if (newone != STR_UNDEFINED) bridge->material = newone;
02090         break;
02091       }
02092 
02093       case 0x11: // description of bridge with rails or roads
02094       case 0x12: {
02095         StringID newone = GetGRFStringID(_cur.grffile->grfid, buf->ReadWord());
02096         if (newone != STR_UNDEFINED) bridge->transport_name[prop - 0x11] = newone;
02097         break;
02098       }
02099 
02100       case 0x13: // 16 bits cost multiplier
02101         bridge->price = buf->ReadWord();
02102         break;
02103 
02104       default:
02105         ret = CIR_UNKNOWN;
02106         break;
02107     }
02108   }
02109 
02110   return ret;
02111 }
02112 
02119 static ChangeInfoResult IgnoreTownHouseProperty(int prop, ByteReader *buf)
02120 {
02121   ChangeInfoResult ret = CIR_SUCCESS;
02122 
02123   switch (prop) {
02124     case 0x09:
02125     case 0x0B:
02126     case 0x0C:
02127     case 0x0D:
02128     case 0x0E:
02129     case 0x0F:
02130     case 0x11:
02131     case 0x14:
02132     case 0x15:
02133     case 0x16:
02134     case 0x18:
02135     case 0x19:
02136     case 0x1A:
02137     case 0x1B:
02138     case 0x1C:
02139     case 0x1D:
02140     case 0x1F:
02141       buf->ReadByte();
02142       break;
02143 
02144     case 0x0A:
02145     case 0x10:
02146     case 0x12:
02147     case 0x13:
02148     case 0x21:
02149     case 0x22:
02150       buf->ReadWord();
02151       break;
02152 
02153     case 0x1E:
02154       buf->ReadDWord();
02155       break;
02156 
02157     case 0x17:
02158       for (uint j = 0; j < 4; j++) buf->ReadByte();
02159       break;
02160 
02161     case 0x20: {
02162       byte count = buf->ReadByte();
02163       for (byte j = 0; j < count; j++) buf->ReadByte();
02164       break;
02165     }
02166 
02167     default:
02168       ret = CIR_UNKNOWN;
02169       break;
02170   }
02171   return ret;
02172 }
02173 
02182 static ChangeInfoResult TownHouseChangeInfo(uint hid, int numinfo, int prop, ByteReader *buf)
02183 {
02184   ChangeInfoResult ret = CIR_SUCCESS;
02185 
02186   if (hid + numinfo > HOUSE_MAX) {
02187     grfmsg(1, "TownHouseChangeInfo: Too many houses loaded (%u), max (%u). Ignoring.", hid + numinfo, HOUSE_MAX);
02188     return CIR_INVALID_ID;
02189   }
02190 
02191   /* Allocate house specs if they haven't been allocated already. */
02192   if (_cur.grffile->housespec == NULL) {
02193     _cur.grffile->housespec = CallocT<HouseSpec*>(HOUSE_MAX);
02194   }
02195 
02196   for (int i = 0; i < numinfo; i++) {
02197     HouseSpec *housespec = _cur.grffile->housespec[hid + i];
02198 
02199     if (prop != 0x08 && housespec == NULL) {
02200       /* If the house property 08 is not yet set, ignore this property */
02201       ChangeInfoResult cir = IgnoreTownHouseProperty(prop, buf);
02202       if (cir > ret) ret = cir;
02203       continue;
02204     }
02205 
02206     switch (prop) {
02207       case 0x08: { // Substitute building type, and definition of a new house
02208         HouseSpec **house = &_cur.grffile->housespec[hid + i];
02209         byte subs_id = buf->ReadByte();
02210 
02211         if (subs_id == 0xFF) {
02212           /* Instead of defining a new house, a substitute house id
02213            * of 0xFF disables the old house with the current id. */
02214           HouseSpec::Get(hid + i)->enabled = false;
02215           continue;
02216         } else if (subs_id >= NEW_HOUSE_OFFSET) {
02217           /* The substitute id must be one of the original houses. */
02218           grfmsg(2, "TownHouseChangeInfo: Attempt to use new house %u as substitute house for %u. Ignoring.", subs_id, hid + i);
02219           continue;
02220         }
02221 
02222         /* Allocate space for this house. */
02223         if (*house == NULL) *house = CallocT<HouseSpec>(1);
02224 
02225         housespec = *house;
02226 
02227         MemCpyT(housespec, HouseSpec::Get(subs_id));
02228 
02229         housespec->enabled = true;
02230         housespec->grf_prop.local_id = hid + i;
02231         housespec->grf_prop.subst_id = subs_id;
02232         housespec->grf_prop.grffile = _cur.grffile;
02233         housespec->random_colour[0] = 0x04;  // those 4 random colours are the base colour
02234         housespec->random_colour[1] = 0x08;  // for all new houses
02235         housespec->random_colour[2] = 0x0C;  // they stand for red, blue, orange and green
02236         housespec->random_colour[3] = 0x06;
02237 
02238         /* Make sure that the third cargo type is valid in this
02239          * climate. This can cause problems when copying the properties
02240          * of a house that accepts food, where the new house is valid
02241          * in the temperate climate. */
02242         if (!CargoSpec::Get(housespec->accepts_cargo[2])->IsValid()) {
02243           housespec->cargo_acceptance[2] = 0;
02244         }
02245 
02246         _loaded_newgrf_features.has_newhouses = true;
02247         break;
02248       }
02249 
02250       case 0x09: // Building flags
02251         housespec->building_flags = (BuildingFlags)buf->ReadByte();
02252         break;
02253 
02254       case 0x0A: { // Availability years
02255         uint16 years = buf->ReadWord();
02256         housespec->min_year = GB(years, 0, 8) > 150 ? MAX_YEAR : ORIGINAL_BASE_YEAR + GB(years, 0, 8);
02257         housespec->max_year = GB(years, 8, 8) > 150 ? MAX_YEAR : ORIGINAL_BASE_YEAR + GB(years, 8, 8);
02258         break;
02259       }
02260 
02261       case 0x0B: // Population
02262         housespec->population = buf->ReadByte();
02263         break;
02264 
02265       case 0x0C: // Mail generation multiplier
02266         housespec->mail_generation = buf->ReadByte();
02267         break;
02268 
02269       case 0x0D: // Passenger acceptance
02270       case 0x0E: // Mail acceptance
02271         housespec->cargo_acceptance[prop - 0x0D] = buf->ReadByte();
02272         break;
02273 
02274       case 0x0F: { // Goods/candy, food/fizzy drinks acceptance
02275         int8 goods = buf->ReadByte();
02276 
02277         /* If value of goods is negative, it means in fact food or, if in toyland, fizzy_drink acceptance.
02278          * Else, we have "standard" 3rd cargo type, goods or candy, for toyland once more */
02279         CargoID cid = (goods >= 0) ? ((_settings_game.game_creation.landscape == LT_TOYLAND) ? CT_CANDY : CT_GOODS) :
02280             ((_settings_game.game_creation.landscape == LT_TOYLAND) ? CT_FIZZY_DRINKS : CT_FOOD);
02281 
02282         /* Make sure the cargo type is valid in this climate. */
02283         if (!CargoSpec::Get(cid)->IsValid()) goods = 0;
02284 
02285         housespec->accepts_cargo[2] = cid;
02286         housespec->cargo_acceptance[2] = abs(goods); // but we do need positive value here
02287         break;
02288       }
02289 
02290       case 0x10: // Local authority rating decrease on removal
02291         housespec->remove_rating_decrease = buf->ReadWord();
02292         break;
02293 
02294       case 0x11: // Removal cost multiplier
02295         housespec->removal_cost = buf->ReadByte();
02296         break;
02297 
02298       case 0x12: // Building name ID
02299         housespec->building_name = buf->ReadWord();
02300         _string_to_grf_mapping[&housespec->building_name] = _cur.grffile->grfid;
02301         break;
02302 
02303       case 0x13: // Building availability mask
02304         housespec->building_availability = (HouseZones)buf->ReadWord();
02305         break;
02306 
02307       case 0x14: // House callback mask
02308         housespec->callback_mask |= buf->ReadByte();
02309         break;
02310 
02311       case 0x15: { // House override byte
02312         byte override = buf->ReadByte();
02313 
02314         /* The house being overridden must be an original house. */
02315         if (override >= NEW_HOUSE_OFFSET) {
02316           grfmsg(2, "TownHouseChangeInfo: Attempt to override new house %u with house id %u. Ignoring.", override, hid + i);
02317           continue;
02318         }
02319 
02320         _house_mngr.Add(hid + i, _cur.grffile->grfid, override);
02321         break;
02322       }
02323 
02324       case 0x16: // Periodic refresh multiplier
02325         housespec->processing_time = min(buf->ReadByte(), 63);
02326         break;
02327 
02328       case 0x17: // Four random colours to use
02329         for (uint j = 0; j < 4; j++) housespec->random_colour[j] = buf->ReadByte();
02330         break;
02331 
02332       case 0x18: // Relative probability of appearing
02333         housespec->probability = buf->ReadByte();
02334         break;
02335 
02336       case 0x19: // Extra flags
02337         housespec->extra_flags = (HouseExtraFlags)buf->ReadByte();
02338         break;
02339 
02340       case 0x1A: // Animation frames
02341         housespec->animation.frames = buf->ReadByte();
02342         housespec->animation.status = GB(housespec->animation.frames, 7, 1);
02343         SB(housespec->animation.frames, 7, 1, 0);
02344         break;
02345 
02346       case 0x1B: // Animation speed
02347         housespec->animation.speed = Clamp(buf->ReadByte(), 2, 16);
02348         break;
02349 
02350       case 0x1C: // Class of the building type
02351         housespec->class_id = AllocateHouseClassID(buf->ReadByte(), _cur.grffile->grfid);
02352         break;
02353 
02354       case 0x1D: // Callback mask part 2
02355         housespec->callback_mask |= (buf->ReadByte() << 8);
02356         break;
02357 
02358       case 0x1E: { // Accepted cargo types
02359         uint32 cargotypes = buf->ReadDWord();
02360 
02361         /* Check if the cargo types should not be changed */
02362         if (cargotypes == 0xFFFFFFFF) break;
02363 
02364         for (uint j = 0; j < 3; j++) {
02365           /* Get the cargo number from the 'list' */
02366           uint8 cargo_part = GB(cargotypes, 8 * j, 8);
02367           CargoID cargo = GetCargoTranslation(cargo_part, _cur.grffile);
02368 
02369           if (cargo == CT_INVALID) {
02370             /* Disable acceptance of invalid cargo type */
02371             housespec->cargo_acceptance[j] = 0;
02372           } else {
02373             housespec->accepts_cargo[j] = cargo;
02374           }
02375         }
02376         break;
02377       }
02378 
02379       case 0x1F: // Minimum life span
02380         housespec->minimum_life = buf->ReadByte();
02381         break;
02382 
02383       case 0x20: { // Cargo acceptance watch list
02384         byte count = buf->ReadByte();
02385         for (byte j = 0; j < count; j++) {
02386           CargoID cargo = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
02387           if (cargo != CT_INVALID) SetBit(housespec->watched_cargoes, cargo);
02388         }
02389         break;
02390       }
02391 
02392       case 0x21: // long introduction year
02393         housespec->min_year = buf->ReadWord();
02394         break;
02395 
02396       case 0x22: // long maximum year
02397         housespec->max_year = buf->ReadWord();
02398         break;
02399 
02400       default:
02401         ret = CIR_UNKNOWN;
02402         break;
02403     }
02404   }
02405 
02406   return ret;
02407 }
02408 
02415 /* static */ const LanguageMap *LanguageMap::GetLanguageMap(uint32 grfid, uint8 language_id)
02416 {
02417   /* LanguageID "MAX_LANG", i.e. 7F is any. This language can't have a gender/case mapping, but has to be handled gracefully. */
02418   const GRFFile *grffile = GetFileByGRFID(grfid);
02419   return (grffile != NULL && grffile->language_map != NULL && language_id < MAX_LANG) ? &grffile->language_map[language_id] : NULL;
02420 }
02421 
02431 template <typename T>
02432 static ChangeInfoResult LoadTranslationTable(uint gvid, int numinfo, ByteReader *buf, T &translation_table, const char *name)
02433 {
02434   if (gvid != 0) {
02435     grfmsg(1, "LoadTranslationTable: %s translation table must start at zero", name);
02436     return CIR_INVALID_ID;
02437   }
02438 
02439   translation_table.Clear();
02440   for (int i = 0; i < numinfo; i++) {
02441     uint32 item = buf->ReadDWord();
02442     *translation_table.Append() = BSWAP32(item);
02443   }
02444 
02445   return CIR_SUCCESS;
02446 }
02447 
02456 static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, ByteReader *buf)
02457 {
02458   /* Properties which are handled as a whole */
02459   switch (prop) {
02460     case 0x09: // Cargo Translation Table; loading during both reservation and activation stage (in case it is selected depending on defined cargos)
02461       return LoadTranslationTable(gvid, numinfo, buf, _cur.grffile->cargo_list, "Cargo");
02462 
02463     case 0x12: // Rail type translation table; loading during both reservation and activation stage (in case it is selected depending on defined railtypes)
02464       return LoadTranslationTable(gvid, numinfo, buf, _cur.grffile->railtype_list, "Rail type");
02465 
02466     default:
02467       break;
02468   }
02469 
02470   /* Properties which are handled per item */
02471   ChangeInfoResult ret = CIR_SUCCESS;
02472   for (int i = 0; i < numinfo; i++) {
02473     switch (prop) {
02474       case 0x08: { // Cost base factor
02475         int factor = buf->ReadByte();
02476         uint price = gvid + i;
02477 
02478         if (price < PR_END) {
02479           _cur.grffile->price_base_multipliers[price] = min<int>(factor - 8, MAX_PRICE_MODIFIER);
02480         } else {
02481           grfmsg(1, "GlobalVarChangeInfo: Price %d out of range, ignoring", price);
02482         }
02483         break;
02484       }
02485 
02486       case 0x0A: { // Currency display names
02487         uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
02488         StringID newone = GetGRFStringID(_cur.grffile->grfid, buf->ReadWord());
02489 
02490         if ((newone != STR_UNDEFINED) && (curidx < CURRENCY_END)) {
02491           _currency_specs[curidx].name = newone;
02492         }
02493         break;
02494       }
02495 
02496       case 0x0B: { // Currency multipliers
02497         uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
02498         uint32 rate = buf->ReadDWord();
02499 
02500         if (curidx < CURRENCY_END) {
02501           /* TTDPatch uses a multiple of 1000 for its conversion calculations,
02502            * which OTTD does not. For this reason, divide grf value by 1000,
02503            * to be compatible */
02504           _currency_specs[curidx].rate = rate / 1000;
02505         } else {
02506           grfmsg(1, "GlobalVarChangeInfo: Currency multipliers %d out of range, ignoring", curidx);
02507         }
02508         break;
02509       }
02510 
02511       case 0x0C: { // Currency options
02512         uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
02513         uint16 options = buf->ReadWord();
02514 
02515         if (curidx < CURRENCY_END) {
02516           _currency_specs[curidx].separator[0] = GB(options, 0, 8);
02517           _currency_specs[curidx].separator[1] = '\0';
02518           /* By specifying only one bit, we prevent errors,
02519            * since newgrf specs said that only 0 and 1 can be set for symbol_pos */
02520           _currency_specs[curidx].symbol_pos = GB(options, 8, 1);
02521         } else {
02522           grfmsg(1, "GlobalVarChangeInfo: Currency option %d out of range, ignoring", curidx);
02523         }
02524         break;
02525       }
02526 
02527       case 0x0D: { // Currency prefix symbol
02528         uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
02529         uint32 tempfix = buf->ReadDWord();
02530 
02531         if (curidx < CURRENCY_END) {
02532           memcpy(_currency_specs[curidx].prefix, &tempfix, 4);
02533           _currency_specs[curidx].prefix[4] = 0;
02534         } else {
02535           grfmsg(1, "GlobalVarChangeInfo: Currency symbol %d out of range, ignoring", curidx);
02536         }
02537         break;
02538       }
02539 
02540       case 0x0E: { // Currency suffix symbol
02541         uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
02542         uint32 tempfix = buf->ReadDWord();
02543 
02544         if (curidx < CURRENCY_END) {
02545           memcpy(&_currency_specs[curidx].suffix, &tempfix, 4);
02546           _currency_specs[curidx].suffix[4] = 0;
02547         } else {
02548           grfmsg(1, "GlobalVarChangeInfo: Currency symbol %d out of range, ignoring", curidx);
02549         }
02550         break;
02551       }
02552 
02553       case 0x0F: { //  Euro introduction dates
02554         uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
02555         Year year_euro = buf->ReadWord();
02556 
02557         if (curidx < CURRENCY_END) {
02558           _currency_specs[curidx].to_euro = year_euro;
02559         } else {
02560           grfmsg(1, "GlobalVarChangeInfo: Euro intro date %d out of range, ignoring", curidx);
02561         }
02562         break;
02563       }
02564 
02565       case 0x10: // Snow line height table
02566         if (numinfo > 1 || IsSnowLineSet()) {
02567           grfmsg(1, "GlobalVarChangeInfo: The snowline can only be set once (%d)", numinfo);
02568         } else if (buf->Remaining() < SNOW_LINE_MONTHS * SNOW_LINE_DAYS) {
02569           grfmsg(1, "GlobalVarChangeInfo: Not enough entries set in the snowline table (" PRINTF_SIZE ")", buf->Remaining());
02570         } else {
02571           byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS];
02572 
02573           for (uint i = 0; i < SNOW_LINE_MONTHS; i++) {
02574             for (uint j = 0; j < SNOW_LINE_DAYS; j++) {
02575               table[i][j] = buf->ReadByte();
02576               if (_cur.grffile->grf_version >= 8) {
02577                 if (table[i][j] != 0xFF) table[i][j] = table[i][j] * (1 + MAX_TILE_HEIGHT) / 256;
02578               } else {
02579                 if (table[i][j] >= 128) {
02580                   /* no snow */
02581                   table[i][j] = 0xFF;
02582                 } else {
02583                   table[i][j] = table[i][j] * (1 + MAX_TILE_HEIGHT) / 128;
02584                 }
02585               }
02586             }
02587           }
02588           SetSnowLine(table);
02589         }
02590         break;
02591 
02592       case 0x11: // GRF match for engine allocation
02593         /* This is loaded during the reservation stage, so just skip it here. */
02594         /* Each entry is 8 bytes. */
02595         buf->Skip(8);
02596         break;
02597 
02598       case 0x13:   // Gender translation table
02599       case 0x14:   // Case translation table
02600       case 0x15: { // Plural form translation
02601         uint curidx = gvid + i; // The current index, i.e. language.
02602         const LanguageMetadata *lang = curidx < MAX_LANG ? GetLanguage(curidx) : NULL;
02603         if (lang == NULL) {
02604           grfmsg(1, "GlobalVarChangeInfo: Language %d is not known, ignoring", curidx);
02605           /* Skip over the data. */
02606           if (prop == 0x15) {
02607             buf->ReadByte();
02608           } else {
02609             while (buf->ReadByte() != 0) {
02610               buf->ReadString();
02611             }
02612           }
02613           break;
02614         }
02615 
02616         if (_cur.grffile->language_map == NULL) _cur.grffile->language_map = new LanguageMap[MAX_LANG];
02617 
02618         if (prop == 0x15) {
02619           uint plural_form = buf->ReadByte();
02620           if (plural_form >= LANGUAGE_MAX_PLURAL) {
02621             grfmsg(1, "GlobalVarChanceInfo: Plural form %d is out of range, ignoring", plural_form);
02622           } else {
02623             _cur.grffile->language_map[curidx].plural_form = plural_form;
02624           }
02625           break;
02626         }
02627 
02628         byte newgrf_id = buf->ReadByte(); // The NewGRF (custom) identifier.
02629         while (newgrf_id != 0) {
02630           const char *name = buf->ReadString(); // The name for the OpenTTD identifier.
02631 
02632           /* We'll just ignore the UTF8 identifier character. This is (fairly)
02633            * safe as OpenTTD's strings gender/cases are usually in ASCII which
02634            * is just a subset of UTF8, or they need the bigger UTF8 characters
02635            * such as Cyrillic. Thus we will simply assume they're all UTF8. */
02636           WChar c;
02637           size_t len = Utf8Decode(&c, name);
02638           if (c == NFO_UTF8_IDENTIFIER) name += len;
02639 
02640           LanguageMap::Mapping map;
02641           map.newgrf_id = newgrf_id;
02642           if (prop == 0x13) {
02643             map.openttd_id = lang->GetGenderIndex(name);
02644             if (map.openttd_id >= MAX_NUM_GENDERS) {
02645               grfmsg(1, "GlobalVarChangeInfo: Gender name %s is not known, ignoring", name);
02646             } else {
02647               *_cur.grffile->language_map[curidx].gender_map.Append() = map;
02648             }
02649           } else {
02650             map.openttd_id = lang->GetCaseIndex(name);
02651             if (map.openttd_id >= MAX_NUM_CASES) {
02652               grfmsg(1, "GlobalVarChangeInfo: Case name %s is not known, ignoring", name);
02653             } else {
02654               *_cur.grffile->language_map[curidx].case_map.Append() = map;
02655             }
02656           }
02657           newgrf_id = buf->ReadByte();
02658         }
02659         break;
02660       }
02661 
02662       default:
02663         ret = CIR_UNKNOWN;
02664         break;
02665     }
02666   }
02667 
02668   return ret;
02669 }
02670 
02671 static ChangeInfoResult GlobalVarReserveInfo(uint gvid, int numinfo, int prop, ByteReader *buf)
02672 {
02673   /* Properties which are handled as a whole */
02674   switch (prop) {
02675     case 0x09: // Cargo Translation Table; loading during both reservation and activation stage (in case it is selected depending on defined cargos)
02676       return LoadTranslationTable(gvid, numinfo, buf, _cur.grffile->cargo_list, "Cargo");
02677 
02678     case 0x12: // Rail type translation table; loading during both reservation and activation stage (in case it is selected depending on defined railtypes)
02679       return LoadTranslationTable(gvid, numinfo, buf, _cur.grffile->railtype_list, "Rail type");
02680 
02681     default:
02682       break;
02683   }
02684 
02685   /* Properties which are handled per item */
02686   ChangeInfoResult ret = CIR_SUCCESS;
02687   for (int i = 0; i < numinfo; i++) {
02688     switch (prop) {
02689       case 0x08: // Cost base factor
02690       case 0x15: // Plural form translation
02691         buf->ReadByte();
02692         break;
02693 
02694       case 0x0A: // Currency display names
02695       case 0x0C: // Currency options
02696       case 0x0F: // Euro introduction dates
02697         buf->ReadWord();
02698         break;
02699 
02700       case 0x0B: // Currency multipliers
02701       case 0x0D: // Currency prefix symbol
02702       case 0x0E: // Currency suffix symbol
02703         buf->ReadDWord();
02704         break;
02705 
02706       case 0x10: // Snow line height table
02707         buf->Skip(SNOW_LINE_MONTHS * SNOW_LINE_DAYS);
02708         break;
02709 
02710       case 0x11: { // GRF match for engine allocation
02711         uint32 s = buf->ReadDWord();
02712         uint32 t = buf->ReadDWord();
02713         SetNewGRFOverride(s, t);
02714         break;
02715       }
02716 
02717       case 0x13: // Gender translation table
02718       case 0x14: // Case translation table
02719         while (buf->ReadByte() != 0) {
02720           buf->ReadString();
02721         }
02722         break;
02723 
02724       default:
02725         ret = CIR_UNKNOWN;
02726         break;
02727     }
02728   }
02729 
02730   return ret;
02731 }
02732 
02733 
02742 static ChangeInfoResult CargoChangeInfo(uint cid, int numinfo, int prop, ByteReader *buf)
02743 {
02744   ChangeInfoResult ret = CIR_SUCCESS;
02745 
02746   if (cid + numinfo > NUM_CARGO) {
02747     grfmsg(2, "CargoChangeInfo: Cargo type %d out of range (max %d)", cid + numinfo, NUM_CARGO - 1);
02748     return CIR_INVALID_ID;
02749   }
02750 
02751   for (int i = 0; i < numinfo; i++) {
02752     CargoSpec *cs = CargoSpec::Get(cid + i);
02753 
02754     switch (prop) {
02755       case 0x08: // Bit number of cargo
02756         cs->bitnum = buf->ReadByte();
02757         if (cs->IsValid()) {
02758           cs->grffile = _cur.grffile;
02759           SetBit(_cargo_mask, cid + i);
02760         } else {
02761           ClrBit(_cargo_mask, cid + i);
02762         }
02763         break;
02764 
02765       case 0x09: // String ID for cargo type name
02766         cs->name = buf->ReadWord();
02767         _string_to_grf_mapping[&cs->name] = _cur.grffile->grfid;
02768         break;
02769 
02770       case 0x0A: // String for 1 unit of cargo
02771         cs->name_single = buf->ReadWord();
02772         _string_to_grf_mapping[&cs->name_single] = _cur.grffile->grfid;
02773         break;
02774 
02775       case 0x0B: // String for singular quantity of cargo (e.g. 1 tonne of coal)
02776       case 0x1B: // String for cargo units
02777         /* String for units of cargo. This is different in OpenTTD
02778          * (e.g. tonnes) to TTDPatch (e.g. {COMMA} tonne of coal).
02779          * Property 1B is used to set OpenTTD's behaviour. */
02780         cs->units_volume = buf->ReadWord();
02781         _string_to_grf_mapping[&cs->units_volume] = _cur.grffile->grfid;
02782         break;
02783 
02784       case 0x0C: // String for plural quantity of cargo (e.g. 10 tonnes of coal)
02785       case 0x1C: // String for any amount of cargo
02786         /* Strings for an amount of cargo. This is different in OpenTTD
02787          * (e.g. {WEIGHT} of coal) to TTDPatch (e.g. {COMMA} tonnes of coal).
02788          * Property 1C is used to set OpenTTD's behaviour. */
02789         cs->quantifier = buf->ReadWord();
02790         _string_to_grf_mapping[&cs->quantifier] = _cur.grffile->grfid;
02791         break;
02792 
02793       case 0x0D: // String for two letter cargo abbreviation
02794         cs->abbrev = buf->ReadWord();
02795         _string_to_grf_mapping[&cs->abbrev] = _cur.grffile->grfid;
02796         break;
02797 
02798       case 0x0E: // Sprite ID for cargo icon
02799         cs->sprite = buf->ReadWord();
02800         break;
02801 
02802       case 0x0F: // Weight of one unit of cargo
02803         cs->weight = buf->ReadByte();
02804         break;
02805 
02806       case 0x10: // Used for payment calculation
02807         cs->transit_days[0] = buf->ReadByte();
02808         break;
02809 
02810       case 0x11: // Used for payment calculation
02811         cs->transit_days[1] = buf->ReadByte();
02812         break;
02813 
02814       case 0x12: // Base cargo price
02815         cs->initial_payment = buf->ReadDWord();
02816         break;
02817 
02818       case 0x13: // Colour for station rating bars
02819         cs->rating_colour = buf->ReadByte();
02820         break;
02821 
02822       case 0x14: // Colour for cargo graph
02823         cs->legend_colour = buf->ReadByte();
02824         break;
02825 
02826       case 0x15: // Freight status
02827         cs->is_freight = (buf->ReadByte() != 0);
02828         break;
02829 
02830       case 0x16: // Cargo classes
02831         cs->classes = buf->ReadWord();
02832         break;
02833 
02834       case 0x17: // Cargo label
02835         cs->label = buf->ReadDWord();
02836         cs->label = BSWAP32(cs->label);
02837         break;
02838 
02839       case 0x18: { // Town growth substitute type
02840         uint8 substitute_type = buf->ReadByte();
02841 
02842         switch (substitute_type) {
02843           case 0x00: cs->town_effect = TE_PASSENGERS; break;
02844           case 0x02: cs->town_effect = TE_MAIL; break;
02845           case 0x05: cs->town_effect = TE_GOODS; break;
02846           case 0x09: cs->town_effect = TE_WATER; break;
02847           case 0x0B: cs->town_effect = TE_FOOD; break;
02848           default:
02849             grfmsg(1, "CargoChangeInfo: Unknown town growth substitute value %d, setting to none.", substitute_type);
02850           case 0xFF: cs->town_effect = TE_NONE; break;
02851         }
02852         break;
02853       }
02854 
02855       case 0x19: // Town growth coefficient
02856         cs->multipliertowngrowth = buf->ReadWord();
02857         break;
02858 
02859       case 0x1A: // Bitmask of callbacks to use
02860         cs->callback_mask = buf->ReadByte();
02861         break;
02862 
02863       case 0x1D: // Vehicle capacity muliplier
02864         cs->multiplier = max<uint16>(1u, buf->ReadWord());
02865         break;
02866 
02867       default:
02868         ret = CIR_UNKNOWN;
02869         break;
02870     }
02871   }
02872 
02873   return ret;
02874 }
02875 
02876 
02885 static ChangeInfoResult SoundEffectChangeInfo(uint sid, int numinfo, int prop, ByteReader *buf)
02886 {
02887   ChangeInfoResult ret = CIR_SUCCESS;
02888 
02889   if (_cur.grffile->sound_offset == 0) {
02890     grfmsg(1, "SoundEffectChangeInfo: No effects defined, skipping");
02891     return CIR_INVALID_ID;
02892   }
02893 
02894   if (sid + numinfo - ORIGINAL_SAMPLE_COUNT > _cur.grffile->num_sounds) {
02895     grfmsg(1, "SoundEffectChangeInfo: Attemting to change undefined sound effect (%u), max (%u). Ignoring.", sid + numinfo, ORIGINAL_SAMPLE_COUNT + _cur.grffile->num_sounds);
02896     return CIR_INVALID_ID;
02897   }
02898 
02899   for (int i = 0; i < numinfo; i++) {
02900     SoundEntry *sound = GetSound(sid + i + _cur.grffile->sound_offset - ORIGINAL_SAMPLE_COUNT);
02901 
02902     switch (prop) {
02903       case 0x08: // Relative volume
02904         sound->volume = buf->ReadByte();
02905         break;
02906 
02907       case 0x09: // Priority
02908         sound->priority = buf->ReadByte();
02909         break;
02910 
02911       case 0x0A: { // Override old sound
02912         SoundID orig_sound = buf->ReadByte();
02913 
02914         if (orig_sound >= ORIGINAL_SAMPLE_COUNT) {
02915           grfmsg(1, "SoundEffectChangeInfo: Original sound %d not defined (max %d)", orig_sound, ORIGINAL_SAMPLE_COUNT);
02916         } else {
02917           SoundEntry *old_sound = GetSound(orig_sound);
02918 
02919           /* Literally copy the data of the new sound over the original */
02920           *old_sound = *sound;
02921         }
02922         break;
02923       }
02924 
02925       default:
02926         ret = CIR_UNKNOWN;
02927         break;
02928     }
02929   }
02930 
02931   return ret;
02932 }
02933 
02940 static ChangeInfoResult IgnoreIndustryTileProperty(int prop, ByteReader *buf)
02941 {
02942   ChangeInfoResult ret = CIR_SUCCESS;
02943 
02944   switch (prop) {
02945     case 0x09:
02946     case 0x0D:
02947     case 0x0E:
02948     case 0x10:
02949     case 0x11:
02950     case 0x12:
02951       buf->ReadByte();
02952       break;
02953 
02954     case 0x0A:
02955     case 0x0B:
02956     case 0x0C:
02957     case 0x0F:
02958       buf->ReadWord();
02959       break;
02960 
02961     default:
02962       ret = CIR_UNKNOWN;
02963       break;
02964   }
02965   return ret;
02966 }
02967 
02976 static ChangeInfoResult IndustrytilesChangeInfo(uint indtid, int numinfo, int prop, ByteReader *buf)
02977 {
02978   ChangeInfoResult ret = CIR_SUCCESS;
02979 
02980   if (indtid + numinfo > NUM_INDUSTRYTILES) {
02981     grfmsg(1, "IndustryTilesChangeInfo: Too many industry tiles loaded (%u), max (%u). Ignoring.", indtid + numinfo, NUM_INDUSTRYTILES);
02982     return CIR_INVALID_ID;
02983   }
02984 
02985   /* Allocate industry tile specs if they haven't been allocated already. */
02986   if (_cur.grffile->indtspec == NULL) {
02987     _cur.grffile->indtspec = CallocT<IndustryTileSpec*>(NUM_INDUSTRYTILES);
02988   }
02989 
02990   for (int i = 0; i < numinfo; i++) {
02991     IndustryTileSpec *tsp = _cur.grffile->indtspec[indtid + i];
02992 
02993     if (prop != 0x08 && tsp == NULL) {
02994       ChangeInfoResult cir = IgnoreIndustryTileProperty(prop, buf);
02995       if (cir > ret) ret = cir;
02996       continue;
02997     }
02998 
02999     switch (prop) {
03000       case 0x08: { // Substitute industry tile type
03001         IndustryTileSpec **tilespec = &_cur.grffile->indtspec[indtid + i];
03002         byte subs_id = buf->ReadByte();
03003 
03004         if (subs_id >= NEW_INDUSTRYTILEOFFSET) {
03005           /* The substitute id must be one of the original industry tile. */
03006           grfmsg(2, "IndustryTilesChangeInfo: Attempt to use new industry tile %u as substitute industry tile for %u. Ignoring.", subs_id, indtid + i);
03007           continue;
03008         }
03009 
03010         /* Allocate space for this industry. */
03011         if (*tilespec == NULL) {
03012           *tilespec = CallocT<IndustryTileSpec>(1);
03013           tsp = *tilespec;
03014 
03015           memcpy(tsp, &_industry_tile_specs[subs_id], sizeof(_industry_tile_specs[subs_id]));
03016           tsp->enabled = true;
03017 
03018           /* A copied tile should not have the animation infos copied too.
03019            * The anim_state should be left untouched, though
03020            * It is up to the author to animate them himself */
03021           tsp->anim_production = INDUSTRYTILE_NOANIM;
03022           tsp->anim_next = INDUSTRYTILE_NOANIM;
03023 
03024           tsp->grf_prop.local_id = indtid + i;
03025           tsp->grf_prop.subst_id = subs_id;
03026           tsp->grf_prop.grffile = _cur.grffile;
03027           _industile_mngr.AddEntityID(indtid + i, _cur.grffile->grfid, subs_id); // pre-reserve the tile slot
03028         }
03029         break;
03030       }
03031 
03032       case 0x09: { // Industry tile override
03033         byte ovrid = buf->ReadByte();
03034 
03035         /* The industry being overridden must be an original industry. */
03036         if (ovrid >= NEW_INDUSTRYTILEOFFSET) {
03037           grfmsg(2, "IndustryTilesChangeInfo: Attempt to override new industry tile %u with industry tile id %u. Ignoring.", ovrid, indtid + i);
03038           continue;
03039         }
03040 
03041         _industile_mngr.Add(indtid + i, _cur.grffile->grfid, ovrid);
03042         break;
03043       }
03044 
03045       case 0x0A: // Tile acceptance
03046       case 0x0B:
03047       case 0x0C: {
03048         uint16 acctp = buf->ReadWord();
03049         tsp->accepts_cargo[prop - 0x0A] = GetCargoTranslation(GB(acctp, 0, 8), _cur.grffile);
03050         tsp->acceptance[prop - 0x0A] = GB(acctp, 8, 8);
03051         break;
03052       }
03053 
03054       case 0x0D: // Land shape flags
03055         tsp->slopes_refused = (Slope)buf->ReadByte();
03056         break;
03057 
03058       case 0x0E: // Callback mask
03059         tsp->callback_mask = buf->ReadByte();
03060         break;
03061 
03062       case 0x0F: // Animation information
03063         tsp->animation.frames = buf->ReadByte();
03064         tsp->animation.status = buf->ReadByte();
03065         break;
03066 
03067       case 0x10: // Animation speed
03068         tsp->animation.speed = buf->ReadByte();
03069         break;
03070 
03071       case 0x11: // Triggers for callback 25
03072         tsp->animation.triggers = buf->ReadByte();
03073         break;
03074 
03075       case 0x12: // Special flags
03076         tsp->special_flags = (IndustryTileSpecialFlags)buf->ReadByte();
03077         break;
03078 
03079       default:
03080         ret = CIR_UNKNOWN;
03081         break;
03082     }
03083   }
03084 
03085   return ret;
03086 }
03087 
03094 static ChangeInfoResult IgnoreIndustryProperty(int prop, ByteReader *buf)
03095 {
03096   ChangeInfoResult ret = CIR_SUCCESS;
03097 
03098   switch (prop) {
03099     case 0x09:
03100     case 0x0B:
03101     case 0x0F:
03102     case 0x12:
03103     case 0x13:
03104     case 0x14:
03105     case 0x17:
03106     case 0x18:
03107     case 0x19:
03108     case 0x21:
03109     case 0x22:
03110       buf->ReadByte();
03111       break;
03112 
03113     case 0x0C:
03114     case 0x0D:
03115     case 0x0E:
03116     case 0x10:
03117     case 0x1B:
03118     case 0x1F:
03119     case 0x24:
03120       buf->ReadWord();
03121       break;
03122 
03123     case 0x11:
03124     case 0x1A:
03125     case 0x1C:
03126     case 0x1D:
03127     case 0x1E:
03128     case 0x20:
03129     case 0x23:
03130       buf->ReadDWord();
03131       break;
03132 
03133     case 0x0A: {
03134       byte num_table = buf->ReadByte();
03135       for (byte j = 0; j < num_table; j++) {
03136         for (uint k = 0;; k++) {
03137           byte x = buf->ReadByte();
03138           if (x == 0xFE && k == 0) {
03139             buf->ReadByte();
03140             buf->ReadByte();
03141             break;
03142           }
03143 
03144           byte y = buf->ReadByte();
03145           if (x == 0 && y == 0x80) break;
03146 
03147           byte gfx = buf->ReadByte();
03148           if (gfx == 0xFE) buf->ReadWord();
03149         }
03150       }
03151       break;
03152     }
03153 
03154     case 0x16:
03155       for (byte j = 0; j < 3; j++) buf->ReadByte();
03156       break;
03157 
03158     case 0x15: {
03159       byte number_of_sounds = buf->ReadByte();
03160       for (uint8 j = 0; j < number_of_sounds; j++) {
03161         buf->ReadByte();
03162       }
03163       break;
03164     }
03165 
03166     default:
03167       ret = CIR_UNKNOWN;
03168       break;
03169   }
03170   return ret;
03171 }
03172 
03179 static bool ValidateIndustryLayout(const IndustryTileTable *layout, int size)
03180 {
03181   for (int i = 0; i < size - 1; i++) {
03182     for (int j = i + 1; j < size; j++) {
03183       if (layout[i].ti.x == layout[j].ti.x &&
03184           layout[i].ti.y == layout[j].ti.y) {
03185         return false;
03186       }
03187     }
03188   }
03189   return true;
03190 }
03191 
03193 static void CleanIndustryTileTable(IndustrySpec *ind)
03194 {
03195   if (HasBit(ind->cleanup_flag, CLEAN_TILELAYOUT) && ind->table != NULL) {
03196     for (int j = 0; j < ind->num_table; j++) {
03197       /* remove the individual layouts */
03198       free(ind->table[j]);
03199     }
03200     /* remove the layouts pointers */
03201     free(ind->table);
03202     ind->table = NULL;
03203   }
03204 }
03205 
03214 static ChangeInfoResult IndustriesChangeInfo(uint indid, int numinfo, int prop, ByteReader *buf)
03215 {
03216   ChangeInfoResult ret = CIR_SUCCESS;
03217 
03218   if (indid + numinfo > NUM_INDUSTRYTYPES) {
03219     grfmsg(1, "IndustriesChangeInfo: Too many industries loaded (%u), max (%u). Ignoring.", indid + numinfo, NUM_INDUSTRYTYPES);
03220     return CIR_INVALID_ID;
03221   }
03222 
03223   /* Allocate industry specs if they haven't been allocated already. */
03224   if (_cur.grffile->industryspec == NULL) {
03225     _cur.grffile->industryspec = CallocT<IndustrySpec*>(NUM_INDUSTRYTYPES);
03226   }
03227 
03228   for (int i = 0; i < numinfo; i++) {
03229     IndustrySpec *indsp = _cur.grffile->industryspec[indid + i];
03230 
03231     if (prop != 0x08 && indsp == NULL) {
03232       ChangeInfoResult cir = IgnoreIndustryProperty(prop, buf);
03233       if (cir > ret) ret = cir;
03234       continue;
03235     }
03236 
03237     switch (prop) {
03238       case 0x08: { // Substitute industry type
03239         IndustrySpec **indspec = &_cur.grffile->industryspec[indid + i];
03240         byte subs_id = buf->ReadByte();
03241 
03242         if (subs_id == 0xFF) {
03243           /* Instead of defining a new industry, a substitute industry id
03244            * of 0xFF disables the old industry with the current id. */
03245           _industry_specs[indid + i].enabled = false;
03246           continue;
03247         } else if (subs_id >= NEW_INDUSTRYOFFSET) {
03248           /* The substitute id must be one of the original industry. */
03249           grfmsg(2, "_industry_specs: Attempt to use new industry %u as substitute industry for %u. Ignoring.", subs_id, indid + i);
03250           continue;
03251         }
03252 
03253         /* Allocate space for this industry.
03254          * Only need to do it once. If ever it is called again, it should not
03255          * do anything */
03256         if (*indspec == NULL) {
03257           *indspec = CallocT<IndustrySpec>(1);
03258           indsp = *indspec;
03259 
03260           memcpy(indsp, &_origin_industry_specs[subs_id], sizeof(_industry_specs[subs_id]));
03261           indsp->enabled = true;
03262           indsp->grf_prop.local_id = indid + i;
03263           indsp->grf_prop.subst_id = subs_id;
03264           indsp->grf_prop.grffile = _cur.grffile;
03265           /* If the grf industry needs to check its surounding upon creation, it should
03266            * rely on callbacks, not on the original placement functions */
03267           indsp->check_proc = CHECK_NOTHING;
03268         }
03269         break;
03270       }
03271 
03272       case 0x09: { // Industry type override
03273         byte ovrid = buf->ReadByte();
03274 
03275         /* The industry being overridden must be an original industry. */
03276         if (ovrid >= NEW_INDUSTRYOFFSET) {
03277           grfmsg(2, "IndustriesChangeInfo: Attempt to override new industry %u with industry id %u. Ignoring.", ovrid, indid + i);
03278           continue;
03279         }
03280         indsp->grf_prop.override = ovrid;
03281         _industry_mngr.Add(indid + i, _cur.grffile->grfid, ovrid);
03282         break;
03283       }
03284 
03285       case 0x0A: { // Set industry layout(s)
03286         byte new_num_layouts = buf->ReadByte(); // Number of layaouts
03287         /* We read the total size in bytes, but we can't rely on the
03288          * newgrf to provide a sane value. First assume the value is
03289          * sane but later on we make sure we enlarge the array if the
03290          * newgrf contains more data. Each tile uses either 3 or 5
03291          * bytes, so to play it safe we assume 3. */
03292         uint32 def_num_tiles = buf->ReadDWord() / 3 + 1;
03293         IndustryTileTable **tile_table = CallocT<IndustryTileTable*>(new_num_layouts); // Table with tiles to compose an industry
03294         IndustryTileTable *itt = CallocT<IndustryTileTable>(def_num_tiles); // Temporary array to read the tile layouts from the GRF
03295         uint size;
03296         const IndustryTileTable *copy_from;
03297 
03298         try {
03299           for (byte j = 0; j < new_num_layouts; j++) {
03300             for (uint k = 0;; k++) {
03301               if (k >= def_num_tiles) {
03302                 grfmsg(3, "IndustriesChangeInfo: Incorrect size for industry tile layout definition for industry %u.", indid);
03303                 /* Size reported by newgrf was not big enough so enlarge the array. */
03304                 def_num_tiles *= 2;
03305                 itt = ReallocT<IndustryTileTable>(itt, def_num_tiles);
03306               }
03307 
03308               itt[k].ti.x = buf->ReadByte(); // Offsets from northermost tile
03309 
03310               if (itt[k].ti.x == 0xFE && k == 0) {
03311                 /* This means we have to borrow the layout from an old industry */
03312                 IndustryType type = buf->ReadByte();  // industry holding required layout
03313                 byte laynbr = buf->ReadByte();        // layout number to borrow
03314 
03315                 copy_from = _origin_industry_specs[type].table[laynbr];
03316                 for (size = 1;; size++) {
03317                   if (copy_from[size - 1].ti.x == -0x80 && copy_from[size - 1].ti.y == 0) break;
03318                 }
03319                 break;
03320               }
03321 
03322               itt[k].ti.y = buf->ReadByte(); // Or table definition finalisation
03323 
03324               if (itt[k].ti.x == 0 && itt[k].ti.y == 0x80) {
03325                 /*  Not the same terminator.  The one we are using is rather
03326                  x = -80, y = x .  So, adjust it. */
03327                 itt[k].ti.x = -0x80;
03328                 itt[k].ti.y =  0;
03329                 itt[k].gfx  =  0;
03330 
03331                 size = k + 1;
03332                 copy_from = itt;
03333                 break;
03334               }
03335 
03336               itt[k].gfx = buf->ReadByte();
03337 
03338               if (itt[k].gfx == 0xFE) {
03339                 /* Use a new tile from this GRF */
03340                 int local_tile_id = buf->ReadWord();
03341 
03342                 /* Read the ID from the _industile_mngr. */
03343                 int tempid = _industile_mngr.GetID(local_tile_id, _cur.grffile->grfid);
03344 
03345                 if (tempid == INVALID_INDUSTRYTILE) {
03346                   grfmsg(2, "IndustriesChangeInfo: Attempt to use industry tile %u with industry id %u, not yet defined. Ignoring.", local_tile_id, indid);
03347                 } else {
03348                   /* Declared as been valid, can be used */
03349                   itt[k].gfx = tempid;
03350                   size = k + 1;
03351                   copy_from = itt;
03352                 }
03353               } else if (itt[k].gfx == 0xFF) {
03354                 itt[k].ti.x = (int8)GB(itt[k].ti.x, 0, 8);
03355                 itt[k].ti.y = (int8)GB(itt[k].ti.y, 0, 8);
03356               }
03357             }
03358 
03359             if (!ValidateIndustryLayout(copy_from, size)) {
03360               /* The industry layout was not valid, so skip this one. */
03361               grfmsg(1, "IndustriesChangeInfo: Invalid industry layout for industry id %u. Ignoring", indid);
03362               new_num_layouts--;
03363               j--;
03364             } else {
03365               tile_table[j] = CallocT<IndustryTileTable>(size);
03366               memcpy(tile_table[j], copy_from, sizeof(*copy_from) * size);
03367             }
03368           }
03369         } catch (...) {
03370           for (int i = 0; i < new_num_layouts; i++) {
03371             free(tile_table[i]);
03372           }
03373           free(tile_table);
03374           free(itt);
03375           throw;
03376         }
03377 
03378         /* Clean the tile table if it was already set by a previous prop A. */
03379         CleanIndustryTileTable(indsp);
03380         /* Install final layout construction in the industry spec */
03381         indsp->num_table = new_num_layouts;
03382         indsp->table = tile_table;
03383         SetBit(indsp->cleanup_flag, CLEAN_TILELAYOUT);
03384         free(itt);
03385         break;
03386       }
03387 
03388       case 0x0B: // Industry production flags
03389         indsp->life_type = (IndustryLifeType)buf->ReadByte();
03390         break;
03391 
03392       case 0x0C: // Industry closure message
03393         indsp->closure_text = buf->ReadWord();
03394         _string_to_grf_mapping[&indsp->closure_text] = _cur.grffile->grfid;
03395         break;
03396 
03397       case 0x0D: // Production increase message
03398         indsp->production_up_text = buf->ReadWord();
03399         _string_to_grf_mapping[&indsp->production_up_text] = _cur.grffile->grfid;
03400         break;
03401 
03402       case 0x0E: // Production decrease message
03403         indsp->production_down_text = buf->ReadWord();
03404         _string_to_grf_mapping[&indsp->production_down_text] = _cur.grffile->grfid;
03405         break;
03406 
03407       case 0x0F: // Fund cost multiplier
03408         indsp->cost_multiplier = buf->ReadByte();
03409         break;
03410 
03411       case 0x10: // Production cargo types
03412         for (byte j = 0; j < 2; j++) {
03413           indsp->produced_cargo[j] = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
03414         }
03415         break;
03416 
03417       case 0x11: // Acceptance cargo types
03418         for (byte j = 0; j < 3; j++) {
03419           indsp->accepts_cargo[j] = GetCargoTranslation(buf->ReadByte(), _cur.grffile);
03420         }
03421         buf->ReadByte(); // Unnused, eat it up
03422         break;
03423 
03424       case 0x12: // Production multipliers
03425       case 0x13:
03426         indsp->production_rate[prop - 0x12] = buf->ReadByte();
03427         break;
03428 
03429       case 0x14: // Minimal amount of cargo distributed
03430         indsp->minimal_cargo = buf->ReadByte();
03431         break;
03432 
03433       case 0x15: { // Random sound effects
03434         indsp->number_of_sounds = buf->ReadByte();
03435         uint8 *sounds = MallocT<uint8>(indsp->number_of_sounds);
03436 
03437         try {
03438           for (uint8 j = 0; j < indsp->number_of_sounds; j++) {
03439             sounds[j] = buf->ReadByte();
03440           }
03441         } catch (...) {
03442           free(sounds);
03443           throw;
03444         }
03445 
03446         if (HasBit(indsp->cleanup_flag, CLEAN_RANDOMSOUNDS)) {
03447           free(indsp->random_sounds);
03448         }
03449         indsp->random_sounds = sounds;
03450         SetBit(indsp->cleanup_flag, CLEAN_RANDOMSOUNDS);
03451         break;
03452       }
03453 
03454       case 0x16: // Conflicting industry types
03455         for (byte j = 0; j < 3; j++) indsp->conflicting[j] = buf->ReadByte();
03456         break;
03457 
03458       case 0x17: // Probability in random game
03459         indsp->appear_creation[_settings_game.game_creation.landscape] = buf->ReadByte();
03460         break;
03461 
03462       case 0x18: // Probability during gameplay
03463         indsp->appear_ingame[_settings_game.game_creation.landscape] = buf->ReadByte();
03464         break;
03465 
03466       case 0x19: // Map colour
03467         indsp->map_colour = buf->ReadByte();
03468         break;
03469 
03470       case 0x1A: // Special industry flags to define special behavior
03471         indsp->behaviour = (IndustryBehaviour)buf->ReadDWord();
03472         break;
03473 
03474       case 0x1B: // New industry text ID
03475         indsp->new_industry_text = buf->ReadWord();
03476         _string_to_grf_mapping[&indsp->new_industry_text] = _cur.grffile->grfid;
03477         break;
03478 
03479       case 0x1C: // Input cargo multipliers for the three input cargo types
03480       case 0x1D:
03481       case 0x1E: {
03482           uint32 multiples = buf->ReadDWord();
03483           indsp->input_cargo_multiplier[prop - 0x1C][0] = GB(multiples, 0, 16);
03484           indsp->input_cargo_multiplier[prop - 0x1C][1] = GB(multiples, 16, 16);
03485           break;
03486         }
03487 
03488       case 0x1F: // Industry name
03489         indsp->name = buf->ReadWord();
03490         _string_to_grf_mapping[&indsp->name] = _cur.grffile->grfid;
03491         break;
03492 
03493       case 0x20: // Prospecting success chance
03494         indsp->prospecting_chance = buf->ReadDWord();
03495         break;
03496 
03497       case 0x21:   // Callback mask
03498       case 0x22: { // Callback additional mask
03499         byte aflag = buf->ReadByte();
03500         SB(indsp->callback_mask, (prop - 0x21) * 8, 8, aflag);
03501         break;
03502       }
03503 
03504       case 0x23: // removal cost multiplier
03505         indsp->removal_cost_multiplier = buf->ReadDWord();
03506         break;
03507 
03508       case 0x24: // name for nearby station
03509         indsp->station_name = buf->ReadWord();
03510         if (indsp->station_name != STR_NULL) _string_to_grf_mapping[&indsp->station_name] = _cur.grffile->grfid;
03511         break;
03512 
03513       default:
03514         ret = CIR_UNKNOWN;
03515         break;
03516     }
03517   }
03518 
03519   return ret;
03520 }
03521 
03527 static void DuplicateTileTable(AirportSpec *as)
03528 {
03529   AirportTileTable **table_list = MallocT<AirportTileTable*>(as->num_table);
03530   for (int i = 0; i < as->num_table; i++) {
03531     uint num_tiles = 1;
03532     const AirportTileTable *it = as->table[0];
03533     do {
03534       num_tiles++;
03535     } while ((++it)->ti.x != -0x80);
03536     table_list[i] = MallocT<AirportTileTable>(num_tiles);
03537     MemCpyT(table_list[i], as->table[i], num_tiles);
03538   }
03539   as->table = table_list;
03540   HangarTileTable *depot_table = MallocT<HangarTileTable>(as->nof_depots);
03541   MemCpyT(depot_table, as->depot_table, as->nof_depots);
03542   as->depot_table = depot_table;
03543 }
03544 
03553 static ChangeInfoResult AirportChangeInfo(uint airport, int numinfo, int prop, ByteReader *buf)
03554 {
03555   ChangeInfoResult ret = CIR_SUCCESS;
03556 
03557   if (airport + numinfo > NUM_AIRPORTS) {
03558     grfmsg(1, "AirportChangeInfo: Too many airports, trying id (%u), max (%u). Ignoring.", airport + numinfo, NUM_AIRPORTS);
03559     return CIR_INVALID_ID;
03560   }
03561 
03562   /* Allocate industry specs if they haven't been allocated already. */
03563   if (_cur.grffile->airportspec == NULL) {
03564     _cur.grffile->airportspec = CallocT<AirportSpec*>(NUM_AIRPORTS);
03565   }
03566 
03567   for (int i = 0; i < numinfo; i++) {
03568     AirportSpec *as = _cur.grffile->airportspec[airport + i];
03569 
03570     if (as == NULL && prop != 0x08 && prop != 0x09) {
03571       grfmsg(2, "AirportChangeInfo: Attempt to modify undefined airport %u, ignoring", airport + i);
03572       return CIR_INVALID_ID;
03573     }
03574 
03575     switch (prop) {
03576       case 0x08: { // Modify original airport
03577         byte subs_id = buf->ReadByte();
03578 
03579         if (subs_id == 0xFF) {
03580           /* Instead of defining a new airport, an airport id
03581            * of 0xFF disables the old airport with the current id. */
03582           AirportSpec::GetWithoutOverride(airport + i)->enabled = false;
03583           continue;
03584         } else if (subs_id >= NEW_AIRPORT_OFFSET) {
03585           /* The substitute id must be one of the original airports. */
03586           grfmsg(2, "AirportChangeInfo: Attempt to use new airport %u as substitute airport for %u. Ignoring.", subs_id, airport + i);
03587           continue;
03588         }
03589 
03590         AirportSpec **spec = &_cur.grffile->airportspec[airport + i];
03591         /* Allocate space for this airport.
03592          * Only need to do it once. If ever it is called again, it should not
03593          * do anything */
03594         if (*spec == NULL) {
03595           *spec = MallocT<AirportSpec>(1);
03596           as = *spec;
03597 
03598           memcpy(as, AirportSpec::GetWithoutOverride(subs_id), sizeof(*as));
03599           as->enabled = true;
03600           as->grf_prop.local_id = airport + i;
03601           as->grf_prop.subst_id = subs_id;
03602           as->grf_prop.grffile = _cur.grffile;
03603           /* override the default airport */
03604           _airport_mngr.Add(airport + i, _cur.grffile->grfid, subs_id);
03605           /* Create a copy of the original tiletable so it can be freed later. */
03606           DuplicateTileTable(as);
03607         }
03608         break;
03609       }
03610 
03611       case 0x0A: { // Set airport layout
03612         as->num_table = buf->ReadByte(); // Number of layaouts
03613         as->rotation = MallocT<Direction>(as->num_table);
03614         uint32 defsize = buf->ReadDWord();  // Total size of the definition
03615         AirportTileTable **tile_table = CallocT<AirportTileTable*>(as->num_table); // Table with tiles to compose the airport
03616         AirportTileTable *att = CallocT<AirportTileTable>(defsize); // Temporary array to read the tile layouts from the GRF
03617         int size;
03618         const AirportTileTable *copy_from;
03619         try {
03620           for (byte j = 0; j < as->num_table; j++) {
03621             as->rotation[j] = (Direction)buf->ReadByte();
03622             for (int k = 0;; k++) {
03623               att[k].ti.x = buf->ReadByte(); // Offsets from northermost tile
03624               att[k].ti.y = buf->ReadByte();
03625 
03626               if (att[k].ti.x == 0 && att[k].ti.y == 0x80) {
03627                 /*  Not the same terminator.  The one we are using is rather
03628                  * x = -80, y = 0 .  So, adjust it. */
03629                 att[k].ti.x = -0x80;
03630                 att[k].ti.y =  0;
03631                 att[k].gfx  =  0;
03632 
03633                 size = k + 1;
03634                 copy_from = att;
03635                 break;
03636               }
03637 
03638               att[k].gfx = buf->ReadByte();
03639 
03640               if (att[k].gfx == 0xFE) {
03641                 /* Use a new tile from this GRF */
03642                 int local_tile_id = buf->ReadWord();
03643 
03644                 /* Read the ID from the _airporttile_mngr. */
03645                 uint16 tempid = _airporttile_mngr.GetID(local_tile_id, _cur.grffile->grfid);
03646 
03647                 if (tempid == INVALID_AIRPORTTILE) {
03648                   grfmsg(2, "AirportChangeInfo: Attempt to use airport tile %u with airport id %u, not yet defined. Ignoring.", local_tile_id, airport + i);
03649                 } else {
03650                   /* Declared as been valid, can be used */
03651                   att[k].gfx = tempid;
03652                   size = k + 1;
03653                   copy_from = att;
03654                 }
03655               } else if (att[k].gfx == 0xFF) {
03656                 att[k].ti.x = (int8)GB(att[k].ti.x, 0, 8);
03657                 att[k].ti.y = (int8)GB(att[k].ti.y, 0, 8);
03658               }
03659 
03660               if (as->rotation[j] == DIR_E || as->rotation[j] == DIR_W) {
03661                 as->size_x = max<byte>(as->size_x, att[k].ti.y + 1);
03662                 as->size_y = max<byte>(as->size_y, att[k].ti.x + 1);
03663               } else {
03664                 as->size_x = max<byte>(as->size_x, att[k].ti.x + 1);
03665                 as->size_y = max<byte>(as->size_y, att[k].ti.y + 1);
03666               }
03667             }
03668             tile_table[j] = CallocT<AirportTileTable>(size);
03669             memcpy(tile_table[j], copy_from, sizeof(*copy_from) * size);
03670           }
03671           /* Install final layout construction in the airport spec */
03672           as->table = tile_table;
03673           free(att);
03674         } catch (...) {
03675           for (int i = 0; i < as->num_table; i++) {
03676             free(tile_table[i]);
03677           }
03678           free(tile_table);
03679           free(att);
03680           throw;
03681         }
03682         break;
03683       }
03684 
03685       case 0x0C:
03686         as->min_year = buf->ReadWord();
03687         as->max_year = buf->ReadWord();
03688         if (as->max_year == 0xFFFF) as->max_year = MAX_YEAR;
03689         break;
03690 
03691       case 0x0D:
03692         as->ttd_airport_type = (TTDPAirportType)buf->ReadByte();
03693         break;
03694 
03695       case 0x0E:
03696         as->catchment = Clamp(buf->ReadByte(), 1, MAX_CATCHMENT);
03697         break;
03698 
03699       case 0x0F:
03700         as->noise_level = buf->ReadByte();
03701         break;
03702 
03703       case 0x10:
03704         as->name = buf->ReadWord();
03705         _string_to_grf_mapping[&as->name] = _cur.grffile->grfid;
03706         break;
03707 
03708       case 0x11: // Maintenance cost factor
03709         as->maintenance_cost = buf->ReadWord();
03710         break;
03711 
03712       default:
03713         ret = CIR_UNKNOWN;
03714         break;
03715     }
03716   }
03717 
03718   return ret;
03719 }
03720 
03727 static ChangeInfoResult IgnoreObjectProperty(uint prop, ByteReader *buf)
03728 {
03729   ChangeInfoResult ret = CIR_SUCCESS;
03730 
03731   switch (prop) {
03732     case 0x0B:
03733     case 0x0C:
03734     case 0x0D:
03735     case 0x12:
03736     case 0x14:
03737     case 0x16:
03738     case 0x17:
03739       buf->ReadByte();
03740 
03741     case 0x09:
03742     case 0x0A:
03743     case 0x10:
03744     case 0x11:
03745     case 0x13:
03746     case 0x15:
03747       buf->ReadWord();
03748       break;
03749 
03750     case 0x08:
03751     case 0x0E:
03752     case 0x0F:
03753       buf->ReadDWord();
03754       break;
03755 
03756     default:
03757       ret = CIR_UNKNOWN;
03758       break;
03759   }
03760 
03761   return ret;
03762 }
03763 
03772 static ChangeInfoResult ObjectChangeInfo(uint id, int numinfo, int prop, ByteReader *buf)
03773 {
03774   ChangeInfoResult ret = CIR_SUCCESS;
03775 
03776   if (id + numinfo > NUM_OBJECTS) {
03777     grfmsg(1, "ObjectChangeInfo: Too many objects loaded (%u), max (%u). Ignoring.", id + numinfo, NUM_OBJECTS);
03778     return CIR_INVALID_ID;
03779   }
03780 
03781   /* Allocate object specs if they haven't been allocated already. */
03782   if (_cur.grffile->objectspec == NULL) {
03783     _cur.grffile->objectspec = CallocT<ObjectSpec*>(NUM_OBJECTS);
03784   }
03785 
03786   for (int i = 0; i < numinfo; i++) {
03787     ObjectSpec *spec = _cur.grffile->objectspec[id + i];
03788 
03789     if (prop != 0x08 && spec == NULL) {
03790       /* If the object property 08 is not yet set, ignore this property */
03791       ChangeInfoResult cir = IgnoreObjectProperty(prop, buf);
03792       if (cir > ret) ret = cir;
03793       continue;
03794     }
03795 
03796     switch (prop) {
03797       case 0x08: { // Class ID
03798         ObjectSpec **ospec = &_cur.grffile->objectspec[id + i];
03799 
03800         /* Allocate space for this object. */
03801         if (*ospec == NULL) {
03802           *ospec = CallocT<ObjectSpec>(1);
03803           (*ospec)->views = 1; // Default for NewGRFs that don't set it.
03804         }
03805 
03806         /* Swap classid because we read it in BE. */
03807         uint32 classid = buf->ReadDWord();
03808         (*ospec)->cls_id = ObjectClass::Allocate(BSWAP32(classid));
03809         (*ospec)->enabled = true;
03810         break;
03811       }
03812 
03813       case 0x09: { // Class name
03814         StringID class_name = buf->ReadWord();
03815         ObjectClass *objclass = ObjectClass::Get(spec->cls_id);
03816         objclass->name = class_name;
03817         _string_to_grf_mapping[&objclass->name] = _cur.grffile->grfid;
03818         break;
03819       }
03820 
03821       case 0x0A: // Object name
03822         spec->name = buf->ReadWord();
03823         _string_to_grf_mapping[&spec->name] = _cur.grffile->grfid;
03824         break;
03825 
03826       case 0x0B: // Climate mask
03827         spec->climate = buf->ReadByte();
03828         break;
03829 
03830       case 0x0C: // Size
03831         spec->size = buf->ReadByte();
03832         break;
03833 
03834       case 0x0D: // Build cost multipler
03835         spec->build_cost_multiplier = buf->ReadByte();
03836         spec->clear_cost_multiplier = spec->build_cost_multiplier;
03837         break;
03838 
03839       case 0x0E: // Introduction date
03840         spec->introduction_date = buf->ReadDWord();
03841         break;
03842 
03843       case 0x0F: // End of life
03844         spec->end_of_life_date = buf->ReadDWord();
03845         break;
03846 
03847       case 0x10: // Flags
03848         spec->flags = (ObjectFlags)buf->ReadWord();
03849         _loaded_newgrf_features.has_2CC |= (spec->flags & OBJECT_FLAG_2CC_COLOUR) != 0;
03850         break;
03851 
03852       case 0x11: // Animation info
03853         spec->animation.frames = buf->ReadByte();
03854         spec->animation.status = buf->ReadByte();
03855         break;
03856 
03857       case 0x12: // Animation speed
03858         spec->animation.speed = buf->ReadByte();
03859         break;
03860 
03861       case 0x13: // Animation triggers
03862         spec->animation.triggers = buf->ReadWord();
03863         break;
03864 
03865       case 0x14: // Removal cost multiplier
03866         spec->clear_cost_multiplier = buf->ReadByte();
03867         break;
03868 
03869       case 0x15: // Callback mask
03870         spec->callback_mask = buf->ReadWord();
03871         break;
03872 
03873       case 0x16: // Building height
03874         spec->height = buf->ReadByte();
03875         break;
03876 
03877       case 0x17: // Views
03878         spec->views = buf->ReadByte();
03879         if (spec->views != 1 && spec->views != 2 && spec->views != 4) {
03880           grfmsg(2, "ObjectChangeInfo: Invalid number of views (%u) for object id %u. Ignoring.", spec->views, id + i);
03881           spec->views = 1;
03882         }
03883         break;
03884 
03885       default:
03886         ret = CIR_UNKNOWN;
03887         break;
03888     }
03889   }
03890 
03891   return ret;
03892 }
03893 
03902 static ChangeInfoResult RailTypeChangeInfo(uint id, int numinfo, int prop, ByteReader *buf)
03903 {
03904   ChangeInfoResult ret = CIR_SUCCESS;
03905 
03906   extern RailtypeInfo _railtypes[RAILTYPE_END];
03907 
03908   if (id + numinfo > RAILTYPE_END) {
03909     grfmsg(1, "RailTypeChangeInfo: Rail type %u is invalid, max %u, ignoring", id + numinfo, RAILTYPE_END);
03910     return CIR_INVALID_ID;
03911   }
03912 
03913   for (int i = 0; i < numinfo; i++) {
03914     RailType rt = _cur.grffile->railtype_map[id + i];
03915     if (rt == INVALID_RAILTYPE) return CIR_INVALID_ID;
03916 
03917     RailtypeInfo *rti = &_railtypes[rt];
03918 
03919     switch (prop) {
03920       case 0x08: // Label of rail type
03921         /* Skipped here as this is loaded during reservation stage. */
03922         buf->ReadDWord();
03923         break;
03924 
03925       case 0x09: // Toolbar caption of railtype (sets name as well for backwards compatibility for grf ver < 8)
03926         rti->strings.toolbar_caption = buf->ReadWord();
03927         _string_to_grf_mapping[&rti->strings.toolbar_caption] = _cur.grffile->grfid;
03928         if (_cur.grffile->grf_version < 8) {
03929           rti->strings.name = rti->strings.toolbar_caption;
03930           _string_to_grf_mapping[&rti->strings.name] = _cur.grffile->grfid;
03931         }
03932         break;
03933 
03934       case 0x0A: // Menu text of railtype
03935         rti->strings.menu_text = buf->ReadWord();
03936         _string_to_grf_mapping[&rti->strings.menu_text] = _cur.grffile->grfid;
03937         break;
03938 
03939       case 0x0B: // Build window caption
03940         rti->strings.build_caption = buf->ReadWord();
03941         _string_to_grf_mapping[&rti->strings.build_caption] = _cur.grffile->grfid;
03942         break;
03943 
03944       case 0x0C: // Autoreplace text
03945         rti->strings.replace_text = buf->ReadWord();
03946         _string_to_grf_mapping[&rti->strings.replace_text] = _cur.grffile->grfid;
03947         break;
03948 
03949       case 0x0D: // New locomotive text
03950         rti->strings.new_loco = buf->ReadWord();
03951         _string_to_grf_mapping[&rti->strings.new_loco] = _cur.grffile->grfid;
03952         break;
03953 
03954       case 0x0E: // Compatible railtype list
03955       case 0x0F: // Powered railtype list
03956       case 0x18: // Railtype list required for date introduction
03957       case 0x19: // Introduced railtype list
03958       {
03959         /* Rail type compatibility bits are added to the existing bits
03960          * to allow multiple GRFs to modify compatibility with the
03961          * default rail types. */
03962         int n = buf->ReadByte();
03963         for (int j = 0; j != n; j++) {
03964           RailTypeLabel label = buf->ReadDWord();
03965           RailType rt = GetRailTypeByLabel(BSWAP32(label), false);
03966           if (rt != INVALID_RAILTYPE) {
03967             switch (prop) {
03968               case 0x0E: SetBit(rti->compatible_railtypes, rt);            break;
03969               case 0x0F: SetBit(rti->powered_railtypes, rt);               break;
03970               case 0x18: SetBit(rti->introduction_required_railtypes, rt); break;
03971               case 0x19: SetBit(rti->introduces_railtypes, rt);            break;
03972             }
03973           }
03974         }
03975         break;
03976       }
03977 
03978       case 0x10: // Rail Type flags
03979         rti->flags = (RailTypeFlags)buf->ReadByte();
03980         break;
03981 
03982       case 0x11: // Curve speed advantage
03983         rti->curve_speed = buf->ReadByte();
03984         break;
03985 
03986       case 0x12: // Station graphic
03987         rti->fallback_railtype = Clamp(buf->ReadByte(), 0, 2);
03988         break;
03989 
03990       case 0x13: // Construction cost factor
03991         rti->cost_multiplier = buf->ReadWord();
03992         break;
03993 
03994       case 0x14: // Speed limit
03995         rti->max_speed = buf->ReadWord();
03996         break;
03997 
03998       case 0x15: // Acceleration model
03999         rti->acceleration_type = Clamp(buf->ReadByte(), 0, 2);
04000         break;
04001 
04002       case 0x16: // Map colour
04003         rti->map_colour = buf->ReadByte();
04004         break;
04005 
04006       case 0x17: // Introduction date
04007         rti->introduction_date = buf->ReadDWord();
04008         break;
04009 
04010       case 0x1A: // Sort order
04011         rti->sorting_order = buf->ReadByte();
04012         break;
04013 
04014       case 0x1B: // Name of railtype (overridden by prop 09 for grf ver < 8)
04015         rti->strings.name = buf->ReadWord();
04016         _string_to_grf_mapping[&rti->strings.name] = _cur.grffile->grfid;
04017         break;
04018 
04019       case 0x1C: // Maintenance cost factor
04020         rti->maintenance_multiplier = buf->ReadWord();
04021         break;
04022 
04023       case 0x1D: // Alternate rail type label list
04024         /* Skipped here as this is loaded during reservation stage. */
04025         for (int j = buf->ReadByte(); j != 0; j--) buf->ReadDWord();
04026         break;
04027 
04028       default:
04029         ret = CIR_UNKNOWN;
04030         break;
04031     }
04032   }
04033 
04034   return ret;
04035 }
04036 
04037 static ChangeInfoResult RailTypeReserveInfo(uint id, int numinfo, int prop, ByteReader *buf)
04038 {
04039   ChangeInfoResult ret = CIR_SUCCESS;
04040 
04041   extern RailtypeInfo _railtypes[RAILTYPE_END];
04042 
04043   if (id + numinfo > RAILTYPE_END) {
04044     grfmsg(1, "RailTypeReserveInfo: Rail type %u is invalid, max %u, ignoring", id + numinfo, RAILTYPE_END);
04045     return CIR_INVALID_ID;
04046   }
04047 
04048   for (int i = 0; i < numinfo; i++) {
04049     switch (prop) {
04050       case 0x08: // Label of rail type
04051       {
04052         RailTypeLabel rtl = buf->ReadDWord();
04053         rtl = BSWAP32(rtl);
04054 
04055         RailType rt = GetRailTypeByLabel(rtl, false);
04056         if (rt == INVALID_RAILTYPE) {
04057           /* Set up new rail type */
04058           rt = AllocateRailType(rtl);
04059         }
04060 
04061         _cur.grffile->railtype_map[id + i] = rt;
04062         break;
04063       }
04064 
04065       case 0x09: // Toolbar caption of railtype
04066       case 0x0A: // Menu text
04067       case 0x0B: // Build window caption
04068       case 0x0C: // Autoreplace text
04069       case 0x0D: // New loco
04070       case 0x13: // Construction cost
04071       case 0x14: // Speed limit
04072       case 0x1B: // Name of railtype
04073       case 0x1C: // Maintenance cost factor
04074         buf->ReadWord();
04075         break;
04076 
04077       case 0x1D: // Alternate rail type label list
04078         if (_cur.grffile->railtype_map[id + i] != INVALID_RAILTYPE) {
04079           int n = buf->ReadByte();
04080           for (int j = 0; j != n; j++) {
04081             *_railtypes[_cur.grffile->railtype_map[id + i]].alternate_labels.Append() = BSWAP32(buf->ReadDWord());
04082           }
04083           break;
04084         }
04085         grfmsg(1, "RailTypeReserveInfo: Ignoring property 1D for rail type %u because no label was set", id + i);
04086         /* FALL THROUGH */
04087 
04088       case 0x0E: // Compatible railtype list
04089       case 0x0F: // Powered railtype list
04090       case 0x18: // Railtype list required for date introduction
04091       case 0x19: // Introduced railtype list
04092         for (int j = buf->ReadByte(); j != 0; j--) buf->ReadDWord();
04093         break;
04094 
04095       case 0x10: // Rail Type flags
04096       case 0x11: // Curve speed advantage
04097       case 0x12: // Station graphic
04098       case 0x15: // Acceleration model
04099       case 0x16: // Map colour
04100       case 0x1A: // Sort order
04101         buf->ReadByte();
04102         break;
04103 
04104       case 0x17: // Introduction date
04105         buf->ReadDWord();
04106         break;
04107 
04108       default:
04109         ret = CIR_UNKNOWN;
04110         break;
04111     }
04112   }
04113 
04114   return ret;
04115 }
04116 
04117 static ChangeInfoResult AirportTilesChangeInfo(uint airtid, int numinfo, int prop, ByteReader *buf)
04118 {
04119   ChangeInfoResult ret = CIR_SUCCESS;
04120 
04121   if (airtid + numinfo > NUM_AIRPORTTILES) {
04122     grfmsg(1, "AirportTileChangeInfo: Too many airport tiles loaded (%u), max (%u). Ignoring.", airtid + numinfo, NUM_AIRPORTTILES);
04123     return CIR_INVALID_ID;
04124   }
04125 
04126   /* Allocate airport tile specs if they haven't been allocated already. */
04127   if (_cur.grffile->airtspec == NULL) {
04128     _cur.grffile->airtspec = CallocT<AirportTileSpec*>(NUM_AIRPORTTILES);
04129   }
04130 
04131   for (int i = 0; i < numinfo; i++) {
04132     AirportTileSpec *tsp = _cur.grffile->airtspec[airtid + i];
04133 
04134     if (prop != 0x08 && tsp == NULL) {
04135       grfmsg(2, "AirportTileChangeInfo: Attempt to modify undefined airport tile %u. Ignoring.", airtid + i);
04136       return CIR_INVALID_ID;
04137     }
04138 
04139     switch (prop) {
04140       case 0x08: { // Substitute airport tile type
04141         AirportTileSpec **tilespec = &_cur.grffile->airtspec[airtid + i];
04142         byte subs_id = buf->ReadByte();
04143 
04144         if (subs_id >= NEW_AIRPORTTILE_OFFSET) {
04145           /* The substitute id must be one of the original airport tiles. */
04146           grfmsg(2, "AirportTileChangeInfo: Attempt to use new airport tile %u as substitute airport tile for %u. Ignoring.", subs_id, airtid + i);
04147           continue;
04148         }
04149 
04150         /* Allocate space for this airport tile. */
04151         if (*tilespec == NULL) {
04152           *tilespec = CallocT<AirportTileSpec>(1);
04153           tsp = *tilespec;
04154 
04155           memcpy(tsp, AirportTileSpec::Get(subs_id), sizeof(AirportTileSpec));
04156           tsp->enabled = true;
04157 
04158           tsp->animation.status = ANIM_STATUS_NO_ANIMATION;
04159 
04160           tsp->grf_prop.local_id = airtid + i;
04161           tsp->grf_prop.subst_id = subs_id;
04162           tsp->grf_prop.grffile = _cur.grffile;
04163           _airporttile_mngr.AddEntityID(airtid + i, _cur.grffile->grfid, subs_id); // pre-reserve the tile slot
04164         }
04165         break;
04166       }
04167 
04168       case 0x09: { // Airport tile override
04169         byte override = buf->ReadByte();
04170 
04171         /* The airport tile being overridden must be an original airport tile. */
04172         if (override >= NEW_AIRPORTTILE_OFFSET) {
04173           grfmsg(2, "AirportTileChangeInfo: Attempt to override new airport tile %u with airport tile id %u. Ignoring.", override, airtid + i);
04174           continue;
04175         }
04176 
04177         _airporttile_mngr.Add(airtid + i, _cur.grffile->grfid, override);
04178         break;
04179       }
04180 
04181       case 0x0E: // Callback mask
04182         tsp->callback_mask = buf->ReadByte();
04183         break;
04184 
04185       case 0x0F: // Animation information
04186         tsp->animation.frames = buf->ReadByte();
04187         tsp->animation.status = buf->ReadByte();
04188         break;
04189 
04190       case 0x10: // Animation speed
04191         tsp->animation.speed = buf->ReadByte();
04192         break;
04193 
04194       case 0x11: // Animation triggers
04195         tsp->animation.triggers = buf->ReadByte();
04196         break;
04197 
04198       default:
04199         ret = CIR_UNKNOWN;
04200         break;
04201     }
04202   }
04203 
04204   return ret;
04205 }
04206 
04207 static bool HandleChangeInfoResult(const char *caller, ChangeInfoResult cir, uint8 feature, uint8 property)
04208 {
04209   switch (cir) {
04210     default: NOT_REACHED();
04211 
04212     case CIR_DISABLED:
04213       /* Error has already been printed; just stop parsing */
04214       return true;
04215 
04216     case CIR_SUCCESS:
04217       return false;
04218 
04219     case CIR_UNHANDLED:
04220       grfmsg(1, "%s: Ignoring property 0x%02X of feature 0x%02X (not implemented)", caller, property, feature);
04221       return false;
04222 
04223     case CIR_UNKNOWN:
04224       grfmsg(0, "%s: Unknown property 0x%02X of feature 0x%02X, disabling", caller, property, feature);
04225       /* FALL THROUGH */
04226 
04227     case CIR_INVALID_ID: {
04228       /* No debug message for an invalid ID, as it has already been output */
04229       GRFError *error = DisableGrf(cir == CIR_INVALID_ID ? STR_NEWGRF_ERROR_INVALID_ID : STR_NEWGRF_ERROR_UNKNOWN_PROPERTY);
04230       if (cir != CIR_INVALID_ID) error->param_value[1] = property;
04231       return true;
04232     }
04233   }
04234 }
04235 
04236 /* Action 0x00 */
04237 static void FeatureChangeInfo(ByteReader *buf)
04238 {
04239   /* <00> <feature> <num-props> <num-info> <id> (<property <new-info>)...
04240    *
04241    * B feature
04242    * B num-props     how many properties to change per vehicle/station
04243    * B num-info      how many vehicles/stations to change
04244    * E id            ID of first vehicle/station to change, if num-info is
04245    *                 greater than one, this one and the following
04246    *                 vehicles/stations will be changed
04247    * B property      what property to change, depends on the feature
04248    * V new-info      new bytes of info (variable size; depends on properties) */
04249 
04250   static const VCI_Handler handler[] = {
04251     /* GSF_TRAINS */        RailVehicleChangeInfo,
04252     /* GSF_ROADVEHICLES */  RoadVehicleChangeInfo,
04253     /* GSF_SHIPS */         ShipVehicleChangeInfo,
04254     /* GSF_AIRCRAFT */      AircraftVehicleChangeInfo,
04255     /* GSF_STATIONS */      StationChangeInfo,
04256     /* GSF_CANALS */        CanalChangeInfo,
04257     /* GSF_BRIDGES */       BridgeChangeInfo,
04258     /* GSF_HOUSES */        TownHouseChangeInfo,
04259     /* GSF_GLOBALVAR */     GlobalVarChangeInfo,
04260     /* GSF_INDUSTRYTILES */ IndustrytilesChangeInfo,
04261     /* GSF_INDUSTRIES */    IndustriesChangeInfo,
04262     /* GSF_CARGOES */       NULL, // Cargo is handled during reservation
04263     /* GSF_SOUNDFX */       SoundEffectChangeInfo,
04264     /* GSF_AIRPORTS */      AirportChangeInfo,
04265     /* GSF_SIGNALS */       NULL,
04266     /* GSF_OBJECTS */       ObjectChangeInfo,
04267     /* GSF_RAILTYPES */     RailTypeChangeInfo,
04268     /* GSF_AIRPORTTILES */  AirportTilesChangeInfo,
04269   };
04270 
04271   uint8 feature  = buf->ReadByte();
04272   uint8 numprops = buf->ReadByte();
04273   uint numinfo  = buf->ReadByte();
04274   uint engine   = buf->ReadExtendedByte();
04275 
04276   grfmsg(6, "FeatureChangeInfo: feature %d, %d properties, to apply to %d+%d",
04277                  feature, numprops, engine, numinfo);
04278 
04279   if (feature >= lengthof(handler) || handler[feature] == NULL) {
04280     if (feature != GSF_CARGOES) grfmsg(1, "FeatureChangeInfo: Unsupported feature %d, skipping", feature);
04281     return;
04282   }
04283 
04284   /* Mark the feature as used by the grf */
04285   SetBit(_cur.grffile->grf_features, feature);
04286 
04287   while (numprops-- && buf->HasData()) {
04288     uint8 prop = buf->ReadByte();
04289 
04290     ChangeInfoResult cir = handler[feature](engine, numinfo, prop, buf);
04291     if (HandleChangeInfoResult("FeatureChangeInfo", cir, feature, prop)) return;
04292   }
04293 }
04294 
04295 /* Action 0x00 (GLS_SAFETYSCAN) */
04296 static void SafeChangeInfo(ByteReader *buf)
04297 {
04298   uint8 feature  = buf->ReadByte();
04299   uint8 numprops = buf->ReadByte();
04300   uint numinfo = buf->ReadByte();
04301   buf->ReadExtendedByte(); // id
04302 
04303   if (feature == GSF_BRIDGES && numprops == 1) {
04304     uint8 prop = buf->ReadByte();
04305     /* Bridge property 0x0D is redefinition of sprite layout tables, which
04306      * is considered safe. */
04307     if (prop == 0x0D) return;
04308   } else if (feature == GSF_GLOBALVAR && numprops == 1) {
04309     uint8 prop = buf->ReadByte();
04310     /* Engine ID Mappings are safe, if the source is static */
04311     if (prop == 0x11) {
04312       bool is_safe = true;
04313       for (uint i = 0; i < numinfo; i++) {
04314         uint32 s = buf->ReadDWord();
04315         buf->ReadDWord(); // dest
04316         const GRFConfig *grfconfig = GetGRFConfig(s);
04317         if (grfconfig != NULL && !HasBit(grfconfig->flags, GCF_STATIC)) {
04318           is_safe = false;
04319           break;
04320         }
04321       }
04322       if (is_safe) return;
04323     }
04324   }
04325 
04326   SetBit(_cur.grfconfig->flags, GCF_UNSAFE);
04327 
04328   /* Skip remainder of GRF */
04329   _cur.skip_sprites = -1;
04330 }
04331 
04332 /* Action 0x00 (GLS_RESERVE) */
04333 static void ReserveChangeInfo(ByteReader *buf)
04334 {
04335   uint8 feature  = buf->ReadByte();
04336 
04337   if (feature != GSF_CARGOES && feature != GSF_GLOBALVAR && feature != GSF_RAILTYPES) return;
04338 
04339   uint8 numprops = buf->ReadByte();
04340   uint8 numinfo  = buf->ReadByte();
04341   uint8 index    = buf->ReadExtendedByte();
04342 
04343   while (numprops-- && buf->HasData()) {
04344     uint8 prop = buf->ReadByte();
04345     ChangeInfoResult cir = CIR_SUCCESS;
04346 
04347     switch (feature) {
04348       default: NOT_REACHED();
04349       case GSF_CARGOES:
04350         cir = CargoChangeInfo(index, numinfo, prop, buf);
04351         break;
04352 
04353       case GSF_GLOBALVAR:
04354         cir = GlobalVarReserveInfo(index, numinfo, prop, buf);
04355         break;
04356 
04357       case GSF_RAILTYPES:
04358         cir = RailTypeReserveInfo(index, numinfo, prop, buf);
04359         break;
04360     }
04361 
04362     if (HandleChangeInfoResult("ReserveChangeInfo", cir, feature, prop)) return;
04363   }
04364 }
04365 
04366 /* Action 0x01 */
04367 static void NewSpriteSet(ByteReader *buf)
04368 {
04369   /* Basic format:    <01> <feature> <num-sets> <num-ent>
04370    * Extended format: <01> <feature> 00 <first-set> <num-sets> <num-ent>
04371    *
04372    * B feature       feature to define sprites for
04373    *                 0, 1, 2, 3: veh-type, 4: train stations
04374    * E first-set     first sprite set to define
04375    * B num-sets      number of sprite sets (extended byte in extended format)
04376    * E num-ent       how many entries per sprite set
04377    *                 For vehicles, this is the number of different
04378    *                         vehicle directions in each sprite set
04379    *                         Set num-dirs=8, unless your sprites are symmetric.
04380    *                         In that case, use num-dirs=4.
04381    */
04382 
04383   uint8  feature   = buf->ReadByte();
04384   uint16 num_sets  = buf->ReadByte();
04385   uint16 first_set = 0;
04386 
04387   if (num_sets == 0 && buf->HasData(3)) {
04388     /* Extended Action1 format.
04389      * Some GRFs define zero sets of zero sprites, though there is actually no use in that. Ignore them. */
04390     first_set = buf->ReadExtendedByte();
04391     num_sets = buf->ReadExtendedByte();
04392   }
04393   uint16 num_ents = buf->ReadExtendedByte();
04394 
04395   _cur.AddSpriteSets(feature, _cur.spriteid, first_set, num_sets, num_ents);
04396 
04397   grfmsg(7, "New sprite set at %d of type %d, consisting of %d sets with %d views each (total %d)",
04398     _cur.spriteid, feature, num_sets, num_ents, num_sets * num_ents
04399   );
04400 
04401   for (int i = 0; i < num_sets * num_ents; i++) {
04402     _cur.nfo_line++;
04403     LoadNextSprite(_cur.spriteid++, _cur.file_index, _cur.nfo_line, _cur.grf_container_ver);
04404   }
04405 }
04406 
04407 /* Action 0x01 (SKIP) */
04408 static void SkipAct1(ByteReader *buf)
04409 {
04410   buf->ReadByte();
04411   uint16 num_sets  = buf->ReadByte();
04412 
04413   if (num_sets == 0 && buf->HasData(3)) {
04414     /* Extended Action1 format.
04415      * Some GRFs define zero sets of zero sprites, though there is actually no use in that. Ignore them. */
04416     buf->ReadExtendedByte(); // first_set
04417     num_sets = buf->ReadExtendedByte();
04418   }
04419   uint16 num_ents = buf->ReadExtendedByte();
04420 
04421   _cur.skip_sprites = num_sets * num_ents;
04422 
04423   grfmsg(3, "SkipAct1: Skipping %d sprites", _cur.skip_sprites);
04424 }
04425 
04426 /* Helper function to either create a callback or link to a previously
04427  * defined spritegroup. */
04428 static const SpriteGroup *GetGroupFromGroupID(byte setid, byte type, uint16 groupid)
04429 {
04430   if (HasBit(groupid, 15)) {
04431     assert(CallbackResultSpriteGroup::CanAllocateItem());
04432     return new CallbackResultSpriteGroup(groupid, _cur.grffile->grf_version >= 8);
04433   }
04434 
04435   if (groupid > MAX_SPRITEGROUP || _cur.spritegroups[groupid] == NULL) {
04436     grfmsg(1, "GetGroupFromGroupID(0x%02X:0x%02X): Groupid 0x%04X does not exist, leaving empty", setid, type, groupid);
04437     return NULL;
04438   }
04439 
04440   return _cur.spritegroups[groupid];
04441 }
04442 
04451 static const SpriteGroup *CreateGroupFromGroupID(byte feature, byte setid, byte type, uint16 spriteid)
04452 {
04453   if (HasBit(spriteid, 15)) {
04454     assert(CallbackResultSpriteGroup::CanAllocateItem());
04455     return new CallbackResultSpriteGroup(spriteid, _cur.grffile->grf_version >= 8);
04456   }
04457 
04458   if (!_cur.IsValidSpriteSet(feature, spriteid)) {
04459     grfmsg(1, "CreateGroupFromGroupID(0x%02X:0x%02X): Sprite set %u invalid", setid, type, spriteid);
04460     return NULL;
04461   }
04462 
04463   SpriteID spriteset_start = _cur.GetSprite(feature, spriteid);
04464   uint num_sprites = _cur.GetNumEnts(feature, spriteid);
04465 
04466   /* Ensure that the sprites are loeded */
04467   assert(spriteset_start + num_sprites <= _cur.spriteid);
04468 
04469   assert(ResultSpriteGroup::CanAllocateItem());
04470   return new ResultSpriteGroup(spriteset_start, num_sprites);
04471 }
04472 
04473 /* Action 0x02 */
04474 static void NewSpriteGroup(ByteReader *buf)
04475 {
04476   /* <02> <feature> <set-id> <type/num-entries> <feature-specific-data...>
04477    *
04478    * B feature       see action 1
04479    * B set-id        ID of this particular definition
04480    * B type/num-entries
04481    *                 if 80 or greater, this is a randomized or variational
04482    *                 list definition, see below
04483    *                 otherwise it specifies a number of entries, the exact
04484    *                 meaning depends on the feature
04485    * V feature-specific-data (huge mess, don't even look it up --pasky) */
04486   SpriteGroup *act_group = NULL;
04487 
04488   uint8 feature = buf->ReadByte();
04489   uint8 setid   = buf->ReadByte();
04490   uint8 type    = buf->ReadByte();
04491 
04492   /* Sprite Groups are created here but they are allocated from a pool, so
04493    * we do not need to delete anything if there is an exception from the
04494    * ByteReader. */
04495 
04496   switch (type) {
04497     /* Deterministic Sprite Group */
04498     case 0x81: // Self scope, byte
04499     case 0x82: // Parent scope, byte
04500     case 0x85: // Self scope, word
04501     case 0x86: // Parent scope, word
04502     case 0x89: // Self scope, dword
04503     case 0x8A: // Parent scope, dword
04504     {
04505       byte varadjust;
04506       byte varsize;
04507 
04508       assert(DeterministicSpriteGroup::CanAllocateItem());
04509       DeterministicSpriteGroup *group = new DeterministicSpriteGroup();
04510       act_group = group;
04511       group->var_scope = HasBit(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
04512 
04513       switch (GB(type, 2, 2)) {
04514         default: NOT_REACHED();
04515         case 0: group->size = DSG_SIZE_BYTE;  varsize = 1; break;
04516         case 1: group->size = DSG_SIZE_WORD;  varsize = 2; break;
04517         case 2: group->size = DSG_SIZE_DWORD; varsize = 4; break;
04518       }
04519 
04520       static SmallVector<DeterministicSpriteGroupAdjust, 16> adjusts;
04521       adjusts.Clear();
04522 
04523       /* Loop through the var adjusts. Unfortunately we don't know how many we have
04524        * from the outset, so we shall have to keep reallocing. */
04525       do {
04526         DeterministicSpriteGroupAdjust *adjust = adjusts.Append();
04527 
04528         /* The first var adjust doesn't have an operation specified, so we set it to add. */
04529         adjust->operation = adjusts.Length() == 1 ? DSGA_OP_ADD : (DeterministicSpriteGroupAdjustOperation)buf->ReadByte();
04530         adjust->variable  = buf->ReadByte();
04531         if (adjust->variable == 0x7E) {
04532           /* Link subroutine group */
04533           adjust->subroutine = GetGroupFromGroupID(setid, type, buf->ReadByte());
04534         } else {
04535           adjust->parameter = IsInsideMM(adjust->variable, 0x60, 0x80) ? buf->ReadByte() : 0;
04536         }
04537 
04538         varadjust = buf->ReadByte();
04539         adjust->shift_num = GB(varadjust, 0, 5);
04540         adjust->type      = (DeterministicSpriteGroupAdjustType)GB(varadjust, 6, 2);
04541         adjust->and_mask  = buf->ReadVarSize(varsize);
04542 
04543         if (adjust->type != DSGA_TYPE_NONE) {
04544           adjust->add_val    = buf->ReadVarSize(varsize);
04545           adjust->divmod_val = buf->ReadVarSize(varsize);
04546         } else {
04547           adjust->add_val    = 0;
04548           adjust->divmod_val = 0;
04549         }
04550 
04551         /* Continue reading var adjusts while bit 5 is set. */
04552       } while (HasBit(varadjust, 5));
04553 
04554       group->num_adjusts = adjusts.Length();
04555       group->adjusts = MallocT<DeterministicSpriteGroupAdjust>(group->num_adjusts);
04556       MemCpyT(group->adjusts, adjusts.Begin(), group->num_adjusts);
04557 
04558       group->num_ranges = buf->ReadByte();
04559       if (group->num_ranges > 0) group->ranges = CallocT<DeterministicSpriteGroupRange>(group->num_ranges);
04560 
04561       for (uint i = 0; i < group->num_ranges; i++) {
04562         group->ranges[i].group = GetGroupFromGroupID(setid, type, buf->ReadWord());
04563         group->ranges[i].low   = buf->ReadVarSize(varsize);
04564         group->ranges[i].high  = buf->ReadVarSize(varsize);
04565       }
04566 
04567       group->default_group = GetGroupFromGroupID(setid, type, buf->ReadWord());
04568       break;
04569     }
04570 
04571     /* Randomized Sprite Group */
04572     case 0x80: // Self scope
04573     case 0x83: // Parent scope
04574     case 0x84: // Relative scope
04575     {
04576       assert(RandomizedSpriteGroup::CanAllocateItem());
04577       RandomizedSpriteGroup *group = new RandomizedSpriteGroup();
04578       act_group = group;
04579       group->var_scope = HasBit(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
04580 
04581       if (HasBit(type, 2)) {
04582         if (feature <= GSF_AIRCRAFT) group->var_scope = VSG_SCOPE_RELATIVE;
04583         group->count = buf->ReadByte();
04584       }
04585 
04586       uint8 triggers = buf->ReadByte();
04587       group->triggers       = GB(triggers, 0, 7);
04588       group->cmp_mode       = HasBit(triggers, 7) ? RSG_CMP_ALL : RSG_CMP_ANY;
04589       group->lowest_randbit = buf->ReadByte();
04590       group->num_groups     = buf->ReadByte();
04591       group->groups = CallocT<const SpriteGroup*>(group->num_groups);
04592 
04593       for (uint i = 0; i < group->num_groups; i++) {
04594         group->groups[i] = GetGroupFromGroupID(setid, type, buf->ReadWord());
04595       }
04596 
04597       break;
04598     }
04599 
04600     /* Neither a variable or randomized sprite group... must be a real group */
04601     default:
04602     {
04603       switch (feature) {
04604         case GSF_TRAINS:
04605         case GSF_ROADVEHICLES:
04606         case GSF_SHIPS:
04607         case GSF_AIRCRAFT:
04608         case GSF_STATIONS:
04609         case GSF_CANALS:
04610         case GSF_CARGOES:
04611         case GSF_AIRPORTS:
04612         case GSF_RAILTYPES:
04613         {
04614           byte num_loaded  = type;
04615           byte num_loading = buf->ReadByte();
04616 
04617           if (!_cur.HasValidSpriteSets(feature)) {
04618             grfmsg(0, "NewSpriteGroup: No sprite set to work on! Skipping");
04619             return;
04620           }
04621 
04622           assert(RealSpriteGroup::CanAllocateItem());
04623           RealSpriteGroup *group = new RealSpriteGroup();
04624           act_group = group;
04625 
04626           group->num_loaded  = num_loaded;
04627           group->num_loading = num_loading;
04628           if (num_loaded  > 0) group->loaded = CallocT<const SpriteGroup*>(num_loaded);
04629           if (num_loading > 0) group->loading = CallocT<const SpriteGroup*>(num_loading);
04630 
04631           grfmsg(6, "NewSpriteGroup: New SpriteGroup 0x%02X, %u loaded, %u loading",
04632               setid, num_loaded, num_loading);
04633 
04634           for (uint i = 0; i < num_loaded; i++) {
04635             uint16 spriteid = buf->ReadWord();
04636             group->loaded[i] = CreateGroupFromGroupID(feature, setid, type, spriteid);
04637             grfmsg(8, "NewSpriteGroup: + rg->loaded[%i]  = subset %u", i, spriteid);
04638           }
04639 
04640           for (uint i = 0; i < num_loading; i++) {
04641             uint16 spriteid = buf->ReadWord();
04642             group->loading[i] = CreateGroupFromGroupID(feature, setid, type, spriteid);
04643             grfmsg(8, "NewSpriteGroup: + rg->loading[%i] = subset %u", i, spriteid);
04644           }
04645 
04646           break;
04647         }
04648 
04649         case GSF_HOUSES:
04650         case GSF_AIRPORTTILES:
04651         case GSF_OBJECTS:
04652         case GSF_INDUSTRYTILES: {
04653           byte num_building_sprites = max((uint8)1, type);
04654 
04655           assert(TileLayoutSpriteGroup::CanAllocateItem());
04656           TileLayoutSpriteGroup *group = new TileLayoutSpriteGroup();
04657           act_group = group;
04658 
04659           /* On error, bail out immediately. Temporary GRF data was already freed */
04660           if (ReadSpriteLayout(buf, num_building_sprites, true, feature, false, type == 0, &group->dts)) return;
04661           break;
04662         }
04663 
04664         case GSF_INDUSTRIES: {
04665           if (type > 1) {
04666             grfmsg(1, "NewSpriteGroup: Unsupported industry production version %d, skipping", type);
04667             break;
04668           }
04669 
04670           assert(IndustryProductionSpriteGroup::CanAllocateItem());
04671           IndustryProductionSpriteGroup *group = new IndustryProductionSpriteGroup();
04672           act_group = group;
04673           group->version = type;
04674           if (type == 0) {
04675             for (uint i = 0; i < 3; i++) {
04676               group->subtract_input[i] = (int16)buf->ReadWord(); // signed
04677             }
04678             for (uint i = 0; i < 2; i++) {
04679               group->add_output[i] = buf->ReadWord(); // unsigned
04680             }
04681             group->again = buf->ReadByte();
04682           } else {
04683             for (uint i = 0; i < 3; i++) {
04684               group->subtract_input[i] = buf->ReadByte();
04685             }
04686             for (uint i = 0; i < 2; i++) {
04687               group->add_output[i] = buf->ReadByte();
04688             }
04689             group->again = buf->ReadByte();
04690           }
04691           break;
04692         }
04693 
04694         /* Loading of Tile Layout and Production Callback groups would happen here */
04695         default: grfmsg(1, "NewSpriteGroup: Unsupported feature %d, skipping", feature);
04696       }
04697     }
04698   }
04699 
04700   _cur.spritegroups[setid] = act_group;
04701 }
04702 
04703 static CargoID TranslateCargo(uint8 feature, uint8 ctype)
04704 {
04705   if (feature == GSF_OBJECTS) {
04706     switch (ctype) {
04707       case 0:    return 0;
04708       case 0xFF: return CT_PURCHASE_OBJECT;
04709       default:
04710         grfmsg(1, "TranslateCargo: Invalid cargo bitnum %d for objects, skipping.", ctype);
04711         return CT_INVALID;
04712     }
04713   }
04714   /* Special cargo types for purchase list and stations */
04715   if (feature == GSF_STATIONS && ctype == 0xFE) return CT_DEFAULT_NA;
04716   if (ctype == 0xFF) return CT_PURCHASE;
04717 
04718   if (_cur.grffile->cargo_list.Length() == 0) {
04719     /* No cargo table, so use bitnum values */
04720     if (ctype >= 32) {
04721       grfmsg(1, "TranslateCargo: Cargo bitnum %d out of range (max 31), skipping.", ctype);
04722       return CT_INVALID;
04723     }
04724 
04725     const CargoSpec *cs;
04726     FOR_ALL_CARGOSPECS(cs) {
04727       if (cs->bitnum == ctype) {
04728         grfmsg(6, "TranslateCargo: Cargo bitnum %d mapped to cargo type %d.", ctype, cs->Index());
04729         return cs->Index();
04730       }
04731     }
04732 
04733     grfmsg(5, "TranslateCargo: Cargo bitnum %d not available in this climate, skipping.", ctype);
04734     return CT_INVALID;
04735   }
04736 
04737   /* Check if the cargo type is out of bounds of the cargo translation table */
04738   if (ctype >= _cur.grffile->cargo_list.Length()) {
04739     grfmsg(1, "TranslateCargo: Cargo type %d out of range (max %d), skipping.", ctype, _cur.grffile->cargo_list.Length() - 1);
04740     return CT_INVALID;
04741   }
04742 
04743   /* Look up the cargo label from the translation table */
04744   CargoLabel cl = _cur.grffile->cargo_list[ctype];
04745   if (cl == 0) {
04746     grfmsg(5, "TranslateCargo: Cargo type %d not available in this climate, skipping.", ctype);
04747     return CT_INVALID;
04748   }
04749 
04750   ctype = GetCargoIDByLabel(cl);
04751   if (ctype == CT_INVALID) {
04752     grfmsg(5, "TranslateCargo: Cargo '%c%c%c%c' unsupported, skipping.", GB(cl, 24, 8), GB(cl, 16, 8), GB(cl, 8, 8), GB(cl, 0, 8));
04753     return CT_INVALID;
04754   }
04755 
04756   grfmsg(6, "TranslateCargo: Cargo '%c%c%c%c' mapped to cargo type %d.", GB(cl, 24, 8), GB(cl, 16, 8), GB(cl, 8, 8), GB(cl, 0, 8), ctype);
04757   return ctype;
04758 }
04759 
04760 
04761 static bool IsValidGroupID(uint16 groupid, const char *function)
04762 {
04763   if (groupid > MAX_SPRITEGROUP || _cur.spritegroups[groupid] == NULL) {
04764     grfmsg(1, "%s: Spritegroup 0x%04X out of range or empty, skipping.", function, groupid);
04765     return false;
04766   }
04767 
04768   return true;
04769 }
04770 
04771 static void VehicleMapSpriteGroup(ByteReader *buf, byte feature, uint8 idcount)
04772 {
04773   static EngineID *last_engines;
04774   static uint last_engines_count;
04775   bool wagover = false;
04776 
04777   /* Test for 'wagon override' flag */
04778   if (HasBit(idcount, 7)) {
04779     wagover = true;
04780     /* Strip off the flag */
04781     idcount = GB(idcount, 0, 7);
04782 
04783     if (last_engines_count == 0) {
04784       grfmsg(0, "VehicleMapSpriteGroup: WagonOverride: No engine to do override with");
04785       return;
04786     }
04787 
04788     grfmsg(6, "VehicleMapSpriteGroup: WagonOverride: %u engines, %u wagons",
04789         last_engines_count, idcount);
04790   } else {
04791     if (last_engines_count != idcount) {
04792       last_engines = ReallocT(last_engines, idcount);
04793       last_engines_count = idcount;
04794     }
04795   }
04796 
04797   EngineID *engines = AllocaM(EngineID, idcount);
04798   for (uint i = 0; i < idcount; i++) {
04799     Engine *e = GetNewEngine(_cur.grffile, (VehicleType)feature, buf->ReadExtendedByte());
04800     if (e == NULL) {
04801       /* No engine could be allocated?!? Deal with it. Okay,
04802        * this might look bad. Also make sure this NewGRF
04803        * gets disabled, as a half loaded one is bad. */
04804       HandleChangeInfoResult("VehicleMapSpriteGroup", CIR_INVALID_ID, 0, 0);
04805       return;
04806     }
04807 
04808     engines[i] = e->index;
04809     if (!wagover) last_engines[i] = engines[i];
04810   }
04811 
04812   uint8 cidcount = buf->ReadByte();
04813   for (uint c = 0; c < cidcount; c++) {
04814     uint8 ctype = buf->ReadByte();
04815     uint16 groupid = buf->ReadWord();
04816     if (!IsValidGroupID(groupid, "VehicleMapSpriteGroup")) continue;
04817 
04818     grfmsg(8, "VehicleMapSpriteGroup: * [%d] Cargo type 0x%X, group id 0x%02X", c, ctype, groupid);
04819 
04820     ctype = TranslateCargo(feature, ctype);
04821     if (ctype == CT_INVALID) continue;
04822 
04823     for (uint i = 0; i < idcount; i++) {
04824       EngineID engine = engines[i];
04825 
04826       grfmsg(7, "VehicleMapSpriteGroup: [%d] Engine %d...", i, engine);
04827 
04828       if (wagover) {
04829         SetWagonOverrideSprites(engine, ctype, _cur.spritegroups[groupid], last_engines, last_engines_count);
04830       } else {
04831         SetCustomEngineSprites(engine, ctype, _cur.spritegroups[groupid]);
04832       }
04833     }
04834   }
04835 
04836   uint16 groupid = buf->ReadWord();
04837   if (!IsValidGroupID(groupid, "VehicleMapSpriteGroup")) return;
04838 
04839   grfmsg(8, "-- Default group id 0x%04X", groupid);
04840 
04841   for (uint i = 0; i < idcount; i++) {
04842     EngineID engine = engines[i];
04843 
04844     if (wagover) {
04845       SetWagonOverrideSprites(engine, CT_DEFAULT, _cur.spritegroups[groupid], last_engines, last_engines_count);
04846     } else {
04847       SetCustomEngineSprites(engine, CT_DEFAULT, _cur.spritegroups[groupid]);
04848       SetEngineGRF(engine, _cur.grffile);
04849     }
04850   }
04851 }
04852 
04853 
04854 static void CanalMapSpriteGroup(ByteReader *buf, uint8 idcount)
04855 {
04856   CanalFeature *cfs = AllocaM(CanalFeature, idcount);
04857   for (uint i = 0; i < idcount; i++) {
04858     cfs[i] = (CanalFeature)buf->ReadByte();
04859   }
04860 
04861   uint8 cidcount = buf->ReadByte();
04862   buf->Skip(cidcount * 3);
04863 
04864   uint16 groupid = buf->ReadWord();
04865   if (!IsValidGroupID(groupid, "CanalMapSpriteGroup")) return;
04866 
04867   for (uint i = 0; i < idcount; i++) {
04868     CanalFeature cf = cfs[i];
04869 
04870     if (cf >= CF_END) {
04871       grfmsg(1, "CanalMapSpriteGroup: Canal subset %d out of range, skipping", cf);
04872       continue;
04873     }
04874 
04875     _water_feature[cf].grffile = _cur.grffile;
04876     _water_feature[cf].group = _cur.spritegroups[groupid];
04877   }
04878 }
04879 
04880 
04881 static void StationMapSpriteGroup(ByteReader *buf, uint8 idcount)
04882 {
04883   uint8 *stations = AllocaM(uint8, idcount);
04884   for (uint i = 0; i < idcount; i++) {
04885     stations[i] = buf->ReadByte();
04886   }
04887 
04888   uint8 cidcount = buf->ReadByte();
04889   for (uint c = 0; c < cidcount; c++) {
04890     uint8 ctype = buf->ReadByte();
04891     uint16 groupid = buf->ReadWord();
04892     if (!IsValidGroupID(groupid, "StationMapSpriteGroup")) continue;
04893 
04894     ctype = TranslateCargo(GSF_STATIONS, ctype);
04895     if (ctype == CT_INVALID) continue;
04896 
04897     for (uint i = 0; i < idcount; i++) {
04898       StationSpec *statspec = _cur.grffile->stations == NULL ? NULL : _cur.grffile->stations[stations[i]];
04899 
04900       if (statspec == NULL) {
04901         grfmsg(1, "StationMapSpriteGroup: Station with ID 0x%02X does not exist, skipping", stations[i]);
04902         continue;
04903       }
04904 
04905       statspec->grf_prop.spritegroup[ctype] = _cur.spritegroups[groupid];
04906     }
04907   }
04908 
04909   uint16 groupid = buf->ReadWord();
04910   if (!IsValidGroupID(groupid, "StationMapSpriteGroup")) return;
04911 
04912   for (uint i = 0; i < idcount; i++) {
04913     StationSpec *statspec = _cur.grffile->stations == NULL ? NULL : _cur.grffile->stations[stations[i]];
04914 
04915     if (statspec == NULL) {
04916       grfmsg(1, "StationMapSpriteGroup: Station with ID 0x%02X does not exist, skipping", stations[i]);
04917       continue;
04918     }
04919 
04920     if (statspec->grf_prop.grffile != NULL) {
04921       grfmsg(1, "StationMapSpriteGroup: Station with ID 0x%02X mapped multiple times, skipping", stations[i]);
04922       continue;
04923     }
04924 
04925     statspec->grf_prop.spritegroup[CT_DEFAULT] = _cur.spritegroups[groupid];
04926     statspec->grf_prop.grffile = _cur.grffile;
04927     statspec->grf_prop.local_id = stations[i];
04928     StationClass::Assign(statspec);
04929   }
04930 }
04931 
04932 
04933 static void TownHouseMapSpriteGroup(ByteReader *buf, uint8 idcount)
04934 {
04935   uint8 *houses = AllocaM(uint8, idcount);
04936   for (uint i = 0; i < idcount; i++) {
04937     houses[i] = buf->ReadByte();
04938   }
04939 
04940   /* Skip the cargo type section, we only care about the default group */
04941   uint8 cidcount = buf->ReadByte();
04942   buf->Skip(cidcount * 3);
04943 
04944   uint16 groupid = buf->ReadWord();
04945   if (!IsValidGroupID(groupid, "TownHouseMapSpriteGroup")) return;
04946 
04947   if (_cur.grffile->housespec == NULL) {
04948     grfmsg(1, "TownHouseMapSpriteGroup: No houses defined, skipping");
04949     return;
04950   }
04951 
04952   for (uint i = 0; i < idcount; i++) {
04953     HouseSpec *hs = _cur.grffile->housespec[houses[i]];
04954 
04955     if (hs == NULL) {
04956       grfmsg(1, "TownHouseMapSpriteGroup: House %d undefined, skipping.", houses[i]);
04957       continue;
04958     }
04959 
04960     hs->grf_prop.spritegroup[0] = _cur.spritegroups[groupid];
04961   }
04962 }
04963 
04964 static void IndustryMapSpriteGroup(ByteReader *buf, uint8 idcount)
04965 {
04966   uint8 *industries = AllocaM(uint8, idcount);
04967   for (uint i = 0; i < idcount; i++) {
04968     industries[i] = buf->ReadByte();
04969   }
04970 
04971   /* Skip the cargo type section, we only care about the default group */
04972   uint8 cidcount = buf->ReadByte();
04973   buf->Skip(cidcount * 3);
04974 
04975   uint16 groupid = buf->ReadWord();
04976   if (!IsValidGroupID(groupid, "IndustryMapSpriteGroup")) return;
04977 
04978   if (_cur.grffile->industryspec == NULL) {
04979     grfmsg(1, "IndustryMapSpriteGroup: No industries defined, skipping");
04980     return;
04981   }
04982 
04983   for (uint i = 0; i < idcount; i++) {
04984     IndustrySpec *indsp = _cur.grffile->industryspec[industries[i]];
04985 
04986     if (indsp == NULL) {
04987       grfmsg(1, "IndustryMapSpriteGroup: Industry %d undefined, skipping", industries[i]);
04988       continue;
04989     }
04990 
04991     indsp->grf_prop.spritegroup[0] = _cur.spritegroups[groupid];
04992   }
04993 }
04994 
04995 static void IndustrytileMapSpriteGroup(ByteReader *buf, uint8 idcount)
04996 {
04997   uint8 *indtiles = AllocaM(uint8, idcount);
04998   for (uint i = 0; i < idcount; i++) {
04999     indtiles[i] = buf->ReadByte();
05000   }
05001 
05002   /* Skip the cargo type section, we only care about the default group */
05003   uint8 cidcount = buf->ReadByte();
05004   buf->Skip(cidcount * 3);
05005 
05006   uint16 groupid = buf->ReadWord();
05007   if (!IsValidGroupID(groupid, "IndustrytileMapSpriteGroup")) return;
05008 
05009   if (_cur.grffile->indtspec == NULL) {
05010     grfmsg(1, "IndustrytileMapSpriteGroup: No industry tiles defined, skipping");
05011     return;
05012   }
05013 
05014   for (uint i = 0; i < idcount; i++) {
05015     IndustryTileSpec *indtsp = _cur.grffile->indtspec[indtiles[i]];
05016 
05017     if (indtsp == NULL) {
05018       grfmsg(1, "IndustrytileMapSpriteGroup: Industry tile %d undefined, skipping", indtiles[i]);
05019       continue;
05020     }
05021 
05022     indtsp->grf_prop.spritegroup[0] = _cur.spritegroups[groupid];
05023   }
05024 }
05025 
05026 static void CargoMapSpriteGroup(ByteReader *buf, uint8 idcount)
05027 {
05028   CargoID *cargoes = AllocaM(CargoID, idcount);
05029   for (uint i = 0; i < idcount; i++) {
05030     cargoes[i] = buf->ReadByte();
05031   }
05032 
05033   /* Skip the cargo type section, we only care about the default group */
05034   uint8 cidcount = buf->ReadByte();
05035   buf->Skip(cidcount * 3);
05036 
05037   uint16 groupid = buf->ReadWord();
05038   if (!IsValidGroupID(groupid, "CargoMapSpriteGroup")) return;
05039 
05040   for (uint i = 0; i < idcount; i++) {
05041     CargoID cid = cargoes[i];
05042 
05043     if (cid >= NUM_CARGO) {
05044       grfmsg(1, "CargoMapSpriteGroup: Cargo ID %d out of range, skipping", cid);
05045       continue;
05046     }
05047 
05048     CargoSpec *cs = CargoSpec::Get(cid);
05049     cs->grffile = _cur.grffile;
05050     cs->group = _cur.spritegroups[groupid];
05051   }
05052 }
05053 
05054 static void ObjectMapSpriteGroup(ByteReader *buf, uint8 idcount)
05055 {
05056   if (_cur.grffile->objectspec == NULL) {
05057     grfmsg(1, "ObjectMapSpriteGroup: No object tiles defined, skipping");
05058     return;
05059   }
05060 
05061   uint8 *objects = AllocaM(uint8, idcount);
05062   for (uint i = 0; i < idcount; i++) {
05063     objects[i] = buf->ReadByte();
05064   }
05065 
05066   uint8 cidcount = buf->ReadByte();
05067   for (uint c = 0; c < cidcount; c++) {
05068     uint8 ctype = buf->ReadByte();
05069     uint16 groupid = buf->ReadWord();
05070     if (!IsValidGroupID(groupid, "ObjectMapSpriteGroup")) continue;
05071 
05072     ctype = TranslateCargo(GSF_OBJECTS, ctype);
05073     if (ctype == CT_INVALID) continue;
05074 
05075     for (uint i = 0; i < idcount; i++) {
05076       ObjectSpec *spec = _cur.grffile->objectspec[objects[i]];
05077 
05078       if (spec == NULL) {
05079         grfmsg(1, "ObjectMapSpriteGroup: Object with ID 0x%02X undefined, skipping", objects[i]);
05080         continue;
05081       }
05082 
05083       spec->grf_prop.spritegroup[ctype] = _cur.spritegroups[groupid];
05084     }
05085   }
05086 
05087   uint16 groupid = buf->ReadWord();
05088   if (!IsValidGroupID(groupid, "ObjectMapSpriteGroup")) return;
05089 
05090   for (uint i = 0; i < idcount; i++) {
05091     ObjectSpec *spec = _cur.grffile->objectspec[objects[i]];
05092 
05093     if (spec == NULL) {
05094       grfmsg(1, "ObjectMapSpriteGroup: Object with ID 0x%02X undefined, skipping", objects[i]);
05095       continue;
05096     }
05097 
05098     if (spec->grf_prop.grffile != NULL) {
05099       grfmsg(1, "ObjectMapSpriteGroup: Object with ID 0x%02X mapped multiple times, skipping", objects[i]);
05100       continue;
05101     }
05102 
05103     spec->grf_prop.spritegroup[0] = _cur.spritegroups[groupid];
05104     spec->grf_prop.grffile        = _cur.grffile;
05105     spec->grf_prop.local_id       = objects[i];
05106   }
05107 }
05108 
05109 static void RailTypeMapSpriteGroup(ByteReader *buf, uint8 idcount)
05110 {
05111   uint8 *railtypes = AllocaM(uint8, idcount);
05112   for (uint i = 0; i < idcount; i++) {
05113     railtypes[i] = _cur.grffile->railtype_map[buf->ReadByte()];
05114   }
05115 
05116   uint8 cidcount = buf->ReadByte();
05117   for (uint c = 0; c < cidcount; c++) {
05118     uint8 ctype = buf->ReadByte();
05119     uint16 groupid = buf->ReadWord();
05120     if (!IsValidGroupID(groupid, "RailTypeMapSpriteGroup")) continue;
05121 
05122     if (ctype >= RTSG_END) continue;
05123 
05124     extern RailtypeInfo _railtypes[RAILTYPE_END];
05125     for (uint i = 0; i < idcount; i++) {
05126       if (railtypes[i] != INVALID_RAILTYPE) {
05127         RailtypeInfo *rti = &_railtypes[railtypes[i]];
05128 
05129         rti->grffile[ctype] = _cur.grffile;
05130         rti->group[ctype] = _cur.spritegroups[groupid];
05131       }
05132     }
05133   }
05134 
05135   /* Railtypes do not use the default group. */
05136   buf->ReadWord();
05137 }
05138 
05139 static void AirportMapSpriteGroup(ByteReader *buf, uint8 idcount)
05140 {
05141   uint8 *airports = AllocaM(uint8, idcount);
05142   for (uint i = 0; i < idcount; i++) {
05143     airports[i] = buf->ReadByte();
05144   }
05145 
05146   /* Skip the cargo type section, we only care about the default group */
05147   uint8 cidcount = buf->ReadByte();
05148   buf->Skip(cidcount * 3);
05149 
05150   uint16 groupid = buf->ReadWord();
05151   if (!IsValidGroupID(groupid, "AirportMapSpriteGroup")) return;
05152 
05153   if (_cur.grffile->airportspec == NULL) {
05154     grfmsg(1, "AirportMapSpriteGroup: No airports defined, skipping");
05155     return;
05156   }
05157 
05158   for (uint i = 0; i < idcount; i++) {
05159     AirportSpec *as = _cur.grffile->airportspec[airports[i]];
05160 
05161     if (as == NULL) {
05162       grfmsg(1, "AirportMapSpriteGroup: Airport %d undefined, skipping", airports[i]);
05163       continue;
05164     }
05165 
05166     as->grf_prop.spritegroup[0] = _cur.spritegroups[groupid];
05167   }
05168 }
05169 
05170 static void AirportTileMapSpriteGroup(ByteReader *buf, uint8 idcount)
05171 {
05172   uint8 *airptiles = AllocaM(uint8, idcount);
05173   for (uint i = 0; i < idcount; i++) {
05174     airptiles[i] = buf->ReadByte();
05175   }
05176 
05177   /* Skip the cargo type section, we only care about the default group */
05178   uint8 cidcount = buf->ReadByte();
05179   buf->Skip(cidcount * 3);
05180 
05181   uint16 groupid = buf->ReadWord();
05182   if (!IsValidGroupID(groupid, "AirportTileMapSpriteGroup")) return;
05183 
05184   if (_cur.grffile->airtspec == NULL) {
05185     grfmsg(1, "AirportTileMapSpriteGroup: No airport tiles defined, skipping");
05186     return;
05187   }
05188 
05189   for (uint i = 0; i < idcount; i++) {
05190     AirportTileSpec *airtsp = _cur.grffile->airtspec[airptiles[i]];
05191 
05192     if (airtsp == NULL) {
05193       grfmsg(1, "AirportTileMapSpriteGroup: Airport tile %d undefined, skipping", airptiles[i]);
05194       continue;
05195     }
05196 
05197     airtsp->grf_prop.spritegroup[0] = _cur.spritegroups[groupid];
05198   }
05199 }
05200 
05201 
05202 /* Action 0x03 */
05203 static void FeatureMapSpriteGroup(ByteReader *buf)
05204 {
05205   /* <03> <feature> <n-id> <ids>... <num-cid> [<cargo-type> <cid>]... <def-cid>
05206    * id-list    := [<id>] [id-list]
05207    * cargo-list := <cargo-type> <cid> [cargo-list]
05208    *
05209    * B feature       see action 0
05210    * B n-id          bits 0-6: how many IDs this definition applies to
05211    *                 bit 7: if set, this is a wagon override definition (see below)
05212    * B ids           the IDs for which this definition applies
05213    * B num-cid       number of cargo IDs (sprite group IDs) in this definition
05214    *                 can be zero, in that case the def-cid is used always
05215    * B cargo-type    type of this cargo type (e.g. mail=2, wood=7, see below)
05216    * W cid           cargo ID (sprite group ID) for this type of cargo
05217    * W def-cid       default cargo ID (sprite group ID) */
05218 
05219   uint8 feature = buf->ReadByte();
05220   uint8 idcount = buf->ReadByte();
05221 
05222   /* If idcount is zero, this is a feature callback */
05223   if (idcount == 0) {
05224     /* Skip number of cargo ids? */
05225     buf->ReadByte();
05226     uint16 groupid = buf->ReadWord();
05227     if (!IsValidGroupID(groupid, "FeatureMapSpriteGroup")) return;
05228 
05229     grfmsg(6, "FeatureMapSpriteGroup: Adding generic feature callback for feature %d", feature);
05230 
05231     AddGenericCallback(feature, _cur.grffile, _cur.spritegroups[groupid]);
05232     return;
05233   }
05234 
05235   /* Mark the feature as used by the grf (generic callbacks do not count) */
05236   SetBit(_cur.grffile->grf_features, feature);
05237 
05238   grfmsg(6, "FeatureMapSpriteGroup: Feature %d, %d ids", feature, idcount);
05239 
05240   switch (feature) {
05241     case GSF_TRAINS:
05242     case GSF_ROADVEHICLES:
05243     case GSF_SHIPS:
05244     case GSF_AIRCRAFT:
05245       VehicleMapSpriteGroup(buf, feature, idcount);
05246       return;
05247 
05248     case GSF_CANALS:
05249       CanalMapSpriteGroup(buf, idcount);
05250       return;
05251 
05252     case GSF_STATIONS:
05253       StationMapSpriteGroup(buf, idcount);
05254       return;
05255 
05256     case GSF_HOUSES:
05257       TownHouseMapSpriteGroup(buf, idcount);
05258       return;
05259 
05260     case GSF_INDUSTRIES:
05261       IndustryMapSpriteGroup(buf, idcount);
05262       return;
05263 
05264     case GSF_INDUSTRYTILES:
05265       IndustrytileMapSpriteGroup(buf, idcount);
05266       return;
05267 
05268     case GSF_CARGOES:
05269       CargoMapSpriteGroup(buf, idcount);
05270       return;
05271 
05272     case GSF_AIRPORTS:
05273       AirportMapSpriteGroup(buf, idcount);
05274       return;
05275 
05276     case GSF_OBJECTS:
05277       ObjectMapSpriteGroup(buf, idcount);
05278       break;
05279 
05280     case GSF_RAILTYPES:
05281       RailTypeMapSpriteGroup(buf, idcount);
05282       break;
05283 
05284     case GSF_AIRPORTTILES:
05285       AirportTileMapSpriteGroup(buf, idcount);
05286       return;
05287 
05288     default:
05289       grfmsg(1, "FeatureMapSpriteGroup: Unsupported feature %d, skipping", feature);
05290       return;
05291   }
05292 }
05293 
05294 /* Action 0x04 */
05295 static void FeatureNewName(ByteReader *buf)
05296 {
05297   /* <04> <veh-type> <language-id> <num-veh> <offset> <data...>
05298    *
05299    * B veh-type      see action 0 (as 00..07, + 0A
05300    *                 But IF veh-type = 48, then generic text
05301    * B language-id   If bit 6 is set, This is the extended language scheme,
05302    *                 with up to 64 language.
05303    *                 Otherwise, it is a mapping where set bits have meaning
05304    *                 0 = american, 1 = english, 2 = german, 3 = french, 4 = spanish
05305    *                 Bit 7 set means this is a generic text, not a vehicle one (or else)
05306    * B num-veh       number of vehicles which are getting a new name
05307    * B/W offset      number of the first vehicle that gets a new name
05308    *                 Byte : ID of vehicle to change
05309    *                 Word : ID of string to change/add
05310    * S data          new texts, each of them zero-terminated, after
05311    *                 which the next name begins. */
05312 
05313   bool new_scheme = _cur.grffile->grf_version >= 7;
05314 
05315   uint8 feature  = buf->ReadByte();
05316   uint8 lang     = buf->ReadByte();
05317   uint8 num      = buf->ReadByte();
05318   bool generic   = HasBit(lang, 7);
05319   uint16 id;
05320   if (generic) {
05321     id = buf->ReadWord();
05322   } else if (feature <= GSF_AIRCRAFT) {
05323     id = buf->ReadExtendedByte();
05324   } else {
05325     id = buf->ReadByte();
05326   }
05327 
05328   ClrBit(lang, 7);
05329 
05330   uint16 endid = id + num;
05331 
05332   grfmsg(6, "FeatureNewName: About to rename engines %d..%d (feature %d) in language 0x%02X",
05333                  id, endid, feature, lang);
05334 
05335   for (; id < endid && buf->HasData(); id++) {
05336     const char *name = buf->ReadString();
05337     grfmsg(8, "FeatureNewName: 0x%04X <- %s", id, name);
05338 
05339     switch (feature) {
05340       case GSF_TRAINS:
05341       case GSF_ROADVEHICLES:
05342       case GSF_SHIPS:
05343       case GSF_AIRCRAFT:
05344         if (!generic) {
05345           Engine *e = GetNewEngine(_cur.grffile, (VehicleType)feature, id, HasBit(_cur.grfconfig->flags, GCF_STATIC));
05346           if (e == NULL) break;
05347           StringID string = AddGRFString(_cur.grffile->grfid, e->index, lang, new_scheme, false, name, e->info.string_id);
05348           e->info.string_id = string;
05349         } else {
05350           AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, true, name, STR_UNDEFINED);
05351         }
05352         break;
05353 
05354       case GSF_INDUSTRIES: {
05355         AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, true, name, STR_UNDEFINED);
05356         break;
05357       }
05358 
05359       case GSF_HOUSES:
05360       default:
05361         switch (GB(id, 8, 8)) {
05362           case 0xC4: // Station class name
05363             if (_cur.grffile->stations == NULL || _cur.grffile->stations[GB(id, 0, 8)] == NULL) {
05364               grfmsg(1, "FeatureNewName: Attempt to name undefined station 0x%X, ignoring", GB(id, 0, 8));
05365             } else {
05366               StationClassID cls_id = _cur.grffile->stations[GB(id, 0, 8)]->cls_id;
05367               StationClass::Get(cls_id)->name = AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, false, name, STR_UNDEFINED);
05368             }
05369             break;
05370 
05371           case 0xC5: // Station name
05372             if (_cur.grffile->stations == NULL || _cur.grffile->stations[GB(id, 0, 8)] == NULL) {
05373               grfmsg(1, "FeatureNewName: Attempt to name undefined station 0x%X, ignoring", GB(id, 0, 8));
05374             } else {
05375               _cur.grffile->stations[GB(id, 0, 8)]->name = AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, false, name, STR_UNDEFINED);
05376             }
05377             break;
05378 
05379           case 0xC7: // Airporttile name
05380             if (_cur.grffile->airtspec == NULL || _cur.grffile->airtspec[GB(id, 0, 8)] == NULL) {
05381               grfmsg(1, "FeatureNewName: Attempt to name undefined airport tile 0x%X, ignoring", GB(id, 0, 8));
05382             } else {
05383               _cur.grffile->airtspec[GB(id, 0, 8)]->name = AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, false, name, STR_UNDEFINED);
05384             }
05385             break;
05386 
05387           case 0xC9: // House name
05388             if (_cur.grffile->housespec == NULL || _cur.grffile->housespec[GB(id, 0, 8)] == NULL) {
05389               grfmsg(1, "FeatureNewName: Attempt to name undefined house 0x%X, ignoring.", GB(id, 0, 8));
05390             } else {
05391               _cur.grffile->housespec[GB(id, 0, 8)]->building_name = AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, false, name, STR_UNDEFINED);
05392             }
05393             break;
05394 
05395           case 0xD0:
05396           case 0xD1:
05397           case 0xD2:
05398           case 0xD3:
05399           case 0xDC:
05400             AddGRFString(_cur.grffile->grfid, id, lang, new_scheme, true, name, STR_UNDEFINED);
05401             break;
05402 
05403           default:
05404             grfmsg(7, "FeatureNewName: Unsupported ID (0x%04X)", id);
05405             break;
05406         }
05407         break;
05408     }
05409   }
05410 }
05411 
05420 static uint16 SanitizeSpriteOffset(uint16& num, uint16 offset, int max_sprites, const char *name)
05421 {
05422 
05423   if (offset >= max_sprites) {
05424     grfmsg(1, "GraphicsNew: %s sprite offset must be less than %i, skipping", name, max_sprites);
05425     uint orig_num = num;
05426     num = 0;
05427     return orig_num;
05428   }
05429 
05430   if (offset + num > max_sprites) {
05431     grfmsg(4, "GraphicsNew: %s sprite overflow, truncating...", name);
05432     uint orig_num = num;
05433     num = max(max_sprites - offset, 0);
05434     return orig_num - num;
05435   }
05436 
05437   return 0;
05438 }
05439 
05440 
05442 enum Action5BlockType {
05443   A5BLOCK_FIXED,                
05444   A5BLOCK_ALLOW_OFFSET,         
05445   A5BLOCK_INVALID,              
05446 };
05448 struct Action5Type {
05449   Action5BlockType block_type;  
05450   SpriteID sprite_base;         
05451   uint16 min_sprites;           
05452   uint16 max_sprites;           
05453   const char *name;             
05454 };
05455 
05457 static const Action5Type _action5_types[] = {
05458   /* Note: min_sprites should not be changed. Therefore these constants are directly here and not in sprites.h */
05459   /* 0x00 */ { A5BLOCK_INVALID,      0,                            0, 0,                                           "Type 0x00"                },
05460   /* 0x01 */ { A5BLOCK_INVALID,      0,                            0, 0,                                           "Type 0x01"                },
05461   /* 0x02 */ { A5BLOCK_INVALID,      0,                            0, 0,                                           "Type 0x02"                },
05462   /* 0x03 */ { A5BLOCK_INVALID,      0,                            0, 0,                                           "Type 0x03"                },
05463   /* 0x04 */ { A5BLOCK_ALLOW_OFFSET, SPR_SIGNALS_BASE,             1, PRESIGNAL_SEMAPHORE_AND_PBS_SPRITE_COUNT,    "Signal graphics"          },
05464   /* 0x05 */ { A5BLOCK_ALLOW_OFFSET, SPR_ELRAIL_BASE,              1, ELRAIL_SPRITE_COUNT,                         "Catenary graphics"        },
05465   /* 0x06 */ { A5BLOCK_ALLOW_OFFSET, SPR_SLOPES_BASE,              1, NORMAL_AND_HALFTILE_FOUNDATION_SPRITE_COUNT, "Foundation graphics"      },
05466   /* 0x07 */ { A5BLOCK_INVALID,      0,                           75, 0,                                           "TTDP GUI graphics"        }, // Not used by OTTD.
05467   /* 0x08 */ { A5BLOCK_ALLOW_OFFSET, SPR_CANALS_BASE,              1, CANALS_SPRITE_COUNT,                         "Canal graphics"           },
05468   /* 0x09 */ { A5BLOCK_ALLOW_OFFSET, SPR_ONEWAY_BASE,              1, ONEWAY_SPRITE_COUNT,                         "One way road graphics"    },
05469   /* 0x0A */ { A5BLOCK_ALLOW_OFFSET, SPR_2CCMAP_BASE,              1, TWOCCMAP_SPRITE_COUNT,                       "2CC colour maps"          },
05470   /* 0x0B */ { A5BLOCK_ALLOW_OFFSET, SPR_TRAMWAY_BASE,             1, TRAMWAY_SPRITE_COUNT,                        "Tramway graphics"         },
05471   /* 0x0C */ { A5BLOCK_INVALID,      0,                          133, 0,                                           "Snowy temperate tree"     }, // Not yet used by OTTD.
05472   /* 0x0D */ { A5BLOCK_FIXED,        SPR_SHORE_BASE,              16, SPR_SHORE_SPRITE_COUNT,                      "Shore graphics"           },
05473   /* 0x0E */ { A5BLOCK_INVALID,      0,                            0, 0,                                           "New Signals graphics"     }, // Not yet used by OTTD.
05474   /* 0x0F */ { A5BLOCK_ALLOW_OFFSET, SPR_TRACKS_FOR_SLOPES_BASE,   1, TRACKS_FOR_SLOPES_SPRITE_COUNT,              "Sloped rail track"        },
05475   /* 0x10 */ { A5BLOCK_ALLOW_OFFSET, SPR_AIRPORTX_BASE,            1, AIRPORTX_SPRITE_COUNT,                       "Airport graphics"         },
05476   /* 0x11 */ { A5BLOCK_ALLOW_OFFSET, SPR_ROADSTOP_BASE,            1, ROADSTOP_SPRITE_COUNT,                       "Road stop graphics"       },
05477   /* 0x12 */ { A5BLOCK_ALLOW_OFFSET, SPR_AQUEDUCT_BASE,            1, AQUEDUCT_SPRITE_COUNT,                       "Aqueduct graphics"        },
05478   /* 0x13 */ { A5BLOCK_ALLOW_OFFSET, SPR_AUTORAIL_BASE,            1, AUTORAIL_SPRITE_COUNT,                       "Autorail graphics"        },
05479   /* 0x14 */ { A5BLOCK_ALLOW_OFFSET, SPR_FLAGS_BASE,               1, FLAGS_SPRITE_COUNT,                          "Flag graphics"            },
05480   /* 0x15 */ { A5BLOCK_ALLOW_OFFSET, SPR_OPENTTD_BASE,             1, OPENTTD_SPRITE_COUNT,                        "OpenTTD GUI graphics"     },
05481   /* 0x16 */ { A5BLOCK_ALLOW_OFFSET, SPR_AIRPORT_PREVIEW_BASE,     1, SPR_AIRPORT_PREVIEW_COUNT,                   "Airport preview graphics" },
05482   /* 0x17 */ { A5BLOCK_ALLOW_OFFSET, SPR_RAILTYPE_TUNNEL_BASE,     1, RAILTYPE_TUNNEL_BASE_COUNT,                  "Railtype tunnel base"     },
05483 };
05484 
05485 /* Action 0x05 */
05486 static void GraphicsNew(ByteReader *buf)
05487 {
05488   /* <05> <graphics-type> <num-sprites> <other data...>
05489    *
05490    * B graphics-type What set of graphics the sprites define.
05491    * E num-sprites   How many sprites are in this set?
05492    * V other data    Graphics type specific data.  Currently unused. */
05493   /* TODO */
05494 
05495   uint8 type = buf->ReadByte();
05496   uint16 num = buf->ReadExtendedByte();
05497   uint16 offset = HasBit(type, 7) ? buf->ReadExtendedByte() : 0;
05498   ClrBit(type, 7); // Clear the high bit as that only indicates whether there is an offset.
05499 
05500   if ((type == 0x0D) && (num == 10) && _cur.grffile->is_ottdfile) {
05501     /* Special not-TTDP-compatible case used in openttd.grf
05502      * Missing shore sprites and initialisation of SPR_SHORE_BASE */
05503     grfmsg(2, "GraphicsNew: Loading 10 missing shore sprites from extra grf.");
05504     LoadNextSprite(SPR_SHORE_BASE +  0, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_STEEP_S
05505     LoadNextSprite(SPR_SHORE_BASE +  5, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_STEEP_W
05506     LoadNextSprite(SPR_SHORE_BASE +  7, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_WSE
05507     LoadNextSprite(SPR_SHORE_BASE + 10, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_STEEP_N
05508     LoadNextSprite(SPR_SHORE_BASE + 11, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_NWS
05509     LoadNextSprite(SPR_SHORE_BASE + 13, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_ENW
05510     LoadNextSprite(SPR_SHORE_BASE + 14, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_SEN
05511     LoadNextSprite(SPR_SHORE_BASE + 15, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_STEEP_E
05512     LoadNextSprite(SPR_SHORE_BASE + 16, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_EW
05513     LoadNextSprite(SPR_SHORE_BASE + 17, _cur.file_index, _cur.nfo_line++, _cur.grf_container_ver); // SLOPE_NS
05514     if (_loaded_newgrf_features.shore == SHORE_REPLACE_NONE) _loaded_newgrf_features.shore = SHORE_REPLACE_ONLY_NEW;
05515     return;
05516   }
05517 
05518   /* Supported type? */
05519   if ((type >= lengthof(_action5_types)) || (_action5_types[type].block_type == A5BLOCK_INVALID)) {
05520     grfmsg(2, "GraphicsNew: Custom graphics (type 0x%02X) sprite block of length %u (unimplemented, ignoring)", type, num);
05521     _cur.skip_sprites = num;
05522     return;
05523   }
05524 
05525   const Action5Type *action5_type = &_action5_types[type];
05526 
05527   /* Contrary to TTDP we allow always to specify too few sprites as we allow always an offset,
05528    * except for the long version of the shore type:
05529    * Ignore offset if not allowed */
05530   if ((action5_type->block_type != A5BLOCK_ALLOW_OFFSET) && (offset != 0)) {
05531     grfmsg(1, "GraphicsNew: %s (type 0x%02X) do not allow an <offset> field. Ignoring offset.", action5_type->name, type);
05532     offset = 0;
05533   }
05534 
05535   /* Ignore action5 if too few sprites are specified. (for TTDP compatibility)
05536    * This does not make sense, if <offset> is allowed */
05537   if ((action5_type->block_type == A5BLOCK_FIXED) && (num < action5_type->min_sprites)) {
05538     grfmsg(1, "GraphicsNew: %s (type 0x%02X) count must be at least %d. Only %d were specified. Skipping.", action5_type->name, type, action5_type->min_sprites, num);
05539     _cur.skip_sprites = num;
05540     return;
05541   }
05542 
05543   /* Load at most max_sprites sprites. Skip remaining sprites. (for compatibility with TTDP and future extentions) */
05544   uint16 skip_num = SanitizeSpriteOffset(num, offset, action5_type->max_sprites, action5_type->name);
05545   SpriteID replace = action5_type->sprite_base + offset;
05546 
05547   /* Load <num> sprites starting from <replace>, then skip <skip_num> sprites. */
05548   grfmsg(2, "GraphicsNew: Replacing sprites %d to %d of %s (type 0x%02X) at SpriteID 0x%04X", offset, offset + num - 1, action5_type->name, type, replace);
05549 
05550   for (; num > 0; num--) {
05551     _cur.nfo_line++;
05552     LoadNextSprite(replace == 0 ? _cur.spriteid++ : replace++, _cur.file_index, _cur.nfo_line, _cur.grf_container_ver);
05553   }
05554 
05555   if (type == 0x0D) _loaded_newgrf_features.shore = SHORE_REPLACE_ACTION_5;
05556 
05557   _cur.skip_sprites = skip_num;
05558 }
05559 
05560 /* Action 0x05 (SKIP) */
05561 static void SkipAct5(ByteReader *buf)
05562 {
05563   /* Ignore type byte */
05564   buf->ReadByte();
05565 
05566   /* Skip the sprites of this action */
05567   _cur.skip_sprites = buf->ReadExtendedByte();
05568 
05569   grfmsg(3, "SkipAct5: Skipping %d sprites", _cur.skip_sprites);
05570 }
05571 
05577 void CheckForMissingSprites()
05578 {
05579   /* Don't break out quickly, but allow to check the other
05580    * sprites as well, so we can give the best information. */
05581   bool missing = false;
05582   for (uint8 i = 0; i < lengthof(_action5_types); i++) {
05583     const Action5Type *type = &_action5_types[i];
05584     if (type->block_type == A5BLOCK_INVALID) continue;
05585 
05586     for (uint j = 0; j < type->max_sprites; j++) {
05587       if (!SpriteExists(type->sprite_base + j)) {
05588         DEBUG(grf, 0, "%s sprites are missing", type->name);
05589         missing = true;
05590         /* No need to log more of the same. */
05591         break;
05592       }
05593     }
05594   }
05595 
05596   if (missing) {
05597     ShowErrorMessage(IsReleasedVersion() ? STR_NEWGRF_ERROR_MISSING_SPRITES : STR_NEWGRF_ERROR_MISSING_SPRITES_UNSTABLE, INVALID_STRING_ID, WL_CRITICAL);
05598   }
05599 }
05600 
05612 bool GetGlobalVariable(byte param, uint32 *value, const GRFFile *grffile)
05613 {
05614   switch (param) {
05615     case 0x00: // current date
05616       *value = max(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0);
05617       return true;
05618 
05619     case 0x01: // current year
05620       *value = Clamp(_cur_year, ORIGINAL_BASE_YEAR, ORIGINAL_MAX_YEAR) - ORIGINAL_BASE_YEAR;
05621       return true;
05622 
05623     case 0x02: { // detailed date information: month of year (bit 0-7), day of month (bit 8-12), leap year (bit 15), day of year (bit 16-24)
05624       YearMonthDay ymd;
05625       ConvertDateToYMD(_date, &ymd);
05626       Date start_of_year = ConvertYMDToDate(ymd.year, 0, 1);
05627       *value = ymd.month | (ymd.day - 1) << 8 | (IsLeapYear(ymd.year) ? 1 << 15 : 0) | (_date - start_of_year) << 16;
05628       return true;
05629     }
05630 
05631     case 0x03: // current climate, 0=temp, 1=arctic, 2=trop, 3=toyland
05632       *value = _settings_game.game_creation.landscape;
05633       return true;
05634 
05635     case 0x06: // road traffic side, bit 4 clear=left, set=right
05636       *value = _settings_game.vehicle.road_side << 4;
05637       return true;
05638 
05639     case 0x09: // date fraction
05640       *value = _date_fract * 885;
05641       return true;
05642 
05643     case 0x0A: // animation counter
05644       *value = _tick_counter;
05645       return true;
05646 
05647     case 0x0B: { // TTDPatch version
05648       uint major    = 2;
05649       uint minor    = 6;
05650       uint revision = 1; // special case: 2.0.1 is 2.0.10
05651       uint build    = 1382;
05652       *value = (major << 24) | (minor << 20) | (revision << 16) | build;
05653       return true;
05654     }
05655 
05656     case 0x0D: // TTD Version, 00=DOS, 01=Windows
05657       *value = _cur.grfconfig->palette & GRFP_USE_MASK;
05658       return true;
05659 
05660     case 0x0E: // Y-offset for train sprites
05661       *value = _cur.grffile->traininfo_vehicle_pitch;
05662       return true;
05663 
05664     case 0x0F: // Rail track type cost factors
05665       *value = 0;
05666       SB(*value, 0, 8, GetRailTypeInfo(RAILTYPE_RAIL)->cost_multiplier); // normal rail
05667       if (_settings_game.vehicle.disable_elrails) {
05668         /* skip elrail multiplier - disabled */
05669         SB(*value, 8, 8, GetRailTypeInfo(RAILTYPE_MONO)->cost_multiplier); // monorail
05670       } else {
05671         SB(*value, 8, 8, GetRailTypeInfo(RAILTYPE_ELECTRIC)->cost_multiplier); // electified railway
05672         /* Skip monorail multiplier - no space in result */
05673       }
05674       SB(*value, 16, 8, GetRailTypeInfo(RAILTYPE_MAGLEV)->cost_multiplier); // maglev
05675       return true;
05676 
05677     case 0x11: // current rail tool type
05678       *value = 0; // constant fake value to avoid desync
05679       return true;
05680 
05681     case 0x12: // Game mode
05682       *value = _game_mode;
05683       return true;
05684 
05685     /* case 0x13: // Tile refresh offset to left    not implemented */
05686     /* case 0x14: // Tile refresh offset to right   not implemented */
05687     /* case 0x15: // Tile refresh offset upwards    not implemented */
05688     /* case 0x16: // Tile refresh offset downwards  not implemented */
05689     /* case 0x17: // temperate snow line            not implemented */
05690 
05691     case 0x1A: // Always -1
05692       *value = UINT_MAX;
05693       return true;
05694 
05695     case 0x1B: // Display options
05696       *value = 0x3F; // constant fake value to avoid desync
05697       return true;
05698 
05699     case 0x1D: // TTD Platform, 00=TTDPatch, 01=OpenTTD
05700       *value = 1;
05701       return true;
05702 
05703     case 0x1E: // Miscellaneous GRF features
05704       *value = _misc_grf_features;
05705 
05706       /* Add the local flags */
05707       assert(!HasBit(*value, GMB_TRAIN_WIDTH_32_PIXELS));
05708       if (_cur.grffile->traininfo_vehicle_width == VEHICLEINFO_FULL_VEHICLE_WIDTH) SetBit(*value, GMB_TRAIN_WIDTH_32_PIXELS);
05709       return true;
05710 
05711     /* case 0x1F: // locale dependent settings not implemented to avoid desync */
05712 
05713     case 0x20: { // snow line height
05714       byte snowline = GetSnowLine();
05715       if (_settings_game.game_creation.landscape == LT_ARCTIC && snowline <= MAX_TILE_HEIGHT) {
05716         *value = Clamp(snowline * (grffile->grf_version >= 8 ? 1 : TILE_HEIGHT), 0, 0xFE);
05717       } else {
05718         /* No snow */
05719         *value = 0xFF;
05720       }
05721       return true;
05722     }
05723 
05724     case 0x21: // OpenTTD version
05725       *value = _openttd_newgrf_version;
05726       return true;
05727 
05728     case 0x22: // difficulty level
05729       *value = SP_CUSTOM;
05730       return true;
05731 
05732     case 0x23: // long format date
05733       *value = _date;
05734       return true;
05735 
05736     case 0x24: // long format year
05737       *value = _cur_year;
05738       return true;
05739 
05740     default: return false;
05741   }
05742 }
05743 
05744 static uint32 GetParamVal(byte param, uint32 *cond_val)
05745 {
05746   /* First handle variable common with VarAction2 */
05747   uint32 value;
05748   if (GetGlobalVariable(param - 0x80, &value, _cur.grffile)) return value;
05749 
05750   /* Non-common variable */
05751   switch (param) {
05752     case 0x84: { // GRF loading stage
05753       uint32 res = 0;
05754 
05755       if (_cur.stage > GLS_INIT) SetBit(res, 0);
05756       if (_cur.stage == GLS_RESERVE) SetBit(res, 8);
05757       if (_cur.stage == GLS_ACTIVATION) SetBit(res, 9);
05758       return res;
05759     }
05760 
05761     case 0x85: // TTDPatch flags, only for bit tests
05762       if (cond_val == NULL) {
05763         /* Supported in Action 0x07 and 0x09, not 0x0D */
05764         return 0;
05765       } else {
05766         uint32 param_val = _ttdpatch_flags[*cond_val / 0x20];
05767         *cond_val %= 0x20;
05768         return param_val;
05769       }
05770 
05771     case 0x88: // GRF ID check
05772       return 0;
05773 
05774     /* case 0x99: Global ID offest not implemented */
05775 
05776     default:
05777       /* GRF Parameter */
05778       if (param < 0x80) return _cur.grffile->GetParam(param);
05779 
05780       /* In-game variable. */
05781       grfmsg(1, "Unsupported in-game variable 0x%02X", param);
05782       return UINT_MAX;
05783   }
05784 }
05785 
05786 /* Action 0x06 */
05787 static void CfgApply(ByteReader *buf)
05788 {
05789   /* <06> <param-num> <param-size> <offset> ... <FF>
05790    *
05791    * B param-num     Number of parameter to substitute (First = "zero")
05792    *                 Ignored if that parameter was not specified in newgrf.cfg
05793    * B param-size    How many bytes to replace.  If larger than 4, the
05794    *                 bytes of the following parameter are used.  In that
05795    *                 case, nothing is applied unless *all* parameters
05796    *                 were specified.
05797    * B offset        Offset into data from beginning of next sprite
05798    *                 to place where parameter is to be stored. */
05799 
05800   /* Preload the next sprite */
05801   size_t pos = FioGetPos();
05802   uint32 num = _cur.grf_container_ver >= 2 ? FioReadDword() : FioReadWord();
05803   uint8 type = FioReadByte();
05804   byte *preload_sprite = NULL;
05805 
05806   /* Check if the sprite is a pseudo sprite. We can't operate on real sprites. */
05807   if (type == 0xFF) {
05808     preload_sprite = MallocT<byte>(num);
05809     FioReadBlock(preload_sprite, num);
05810   }
05811 
05812   /* Reset the file position to the start of the next sprite */
05813   FioSeekTo(pos, SEEK_SET);
05814 
05815   if (type != 0xFF) {
05816     grfmsg(2, "CfgApply: Ignoring (next sprite is real, unsupported)");
05817     free(preload_sprite);
05818     return;
05819   }
05820 
05821   GRFLocation location(_cur.grfconfig->ident.grfid, _cur.nfo_line + 1);
05822   GRFLineToSpriteOverride::iterator it = _grf_line_to_action6_sprite_override.find(location);
05823   if (it != _grf_line_to_action6_sprite_override.end()) {
05824     free(preload_sprite);
05825     preload_sprite = _grf_line_to_action6_sprite_override[location];
05826   } else {
05827     _grf_line_to_action6_sprite_override[location] = preload_sprite;
05828   }
05829 
05830   /* Now perform the Action 0x06 on our data. */
05831 
05832   for (;;) {
05833     uint i;
05834     uint param_num;
05835     uint param_size;
05836     uint offset;
05837     bool add_value;
05838 
05839     /* Read the parameter to apply. 0xFF indicates no more data to change. */
05840     param_num = buf->ReadByte();
05841     if (param_num == 0xFF) break;
05842 
05843     /* Get the size of the parameter to use. If the size covers multiple
05844      * double words, sequential parameter values are used. */
05845     param_size = buf->ReadByte();
05846 
05847     /* Bit 7 of param_size indicates we should add to the original value
05848      * instead of replacing it. */
05849     add_value  = HasBit(param_size, 7);
05850     param_size = GB(param_size, 0, 7);
05851 
05852     /* Where to apply the data to within the pseudo sprite data. */
05853     offset     = buf->ReadExtendedByte();
05854 
05855     /* If the parameter is a GRF parameter (not an internal variable) check
05856      * if it (and all further sequential parameters) has been defined. */
05857     if (param_num < 0x80 && (param_num + (param_size - 1) / 4) >= _cur.grffile->param_end) {
05858       grfmsg(2, "CfgApply: Ignoring (param %d not set)", (param_num + (param_size - 1) / 4));
05859       break;
05860     }
05861 
05862     grfmsg(8, "CfgApply: Applying %u bytes from parameter 0x%02X at offset 0x%04X", param_size, param_num, offset);
05863 
05864     bool carry = false;
05865     for (i = 0; i < param_size && offset + i < num; i++) {
05866       uint32 value = GetParamVal(param_num + i / 4, NULL);
05867       /* Reset carry flag for each iteration of the variable (only really
05868        * matters if param_size is greater than 4) */
05869       if (i % 4 == 0) carry = false;
05870 
05871       if (add_value) {
05872         uint new_value = preload_sprite[offset + i] + GB(value, (i % 4) * 8, 8) + (carry ? 1 : 0);
05873         preload_sprite[offset + i] = GB(new_value, 0, 8);
05874         /* Check if the addition overflowed */
05875         carry = new_value >= 256;
05876       } else {
05877         preload_sprite[offset + i] = GB(value, (i % 4) * 8, 8);
05878       }
05879     }
05880   }
05881 }
05882 
05892 static void DisableStaticNewGRFInfluencingNonStaticNewGRFs(GRFConfig *c)
05893 {
05894   GRFError *error = DisableGrf(STR_NEWGRF_ERROR_STATIC_GRF_CAUSES_DESYNC, c);
05895   error->data = strdup(_cur.grfconfig->GetName());
05896 }
05897 
05898 /* Action 0x07
05899  * Action 0x09 */
05900 static void SkipIf(ByteReader *buf)
05901 {
05902   /* <07/09> <param-num> <param-size> <condition-type> <value> <num-sprites>
05903    *
05904    * B param-num
05905    * B param-size
05906    * B condition-type
05907    * V value
05908    * B num-sprites */
05909   /* TODO: More params. More condition types. */
05910   uint32 cond_val = 0;
05911   uint32 mask = 0;
05912   bool result;
05913 
05914   uint8 param     = buf->ReadByte();
05915   uint8 paramsize = buf->ReadByte();
05916   uint8 condtype  = buf->ReadByte();
05917 
05918   if (condtype < 2) {
05919     /* Always 1 for bit tests, the given value should be ignored. */
05920     paramsize = 1;
05921   }
05922 
05923   switch (paramsize) {
05924     case 8: cond_val = buf->ReadDWord(); mask = buf->ReadDWord(); break;
05925     case 4: cond_val = buf->ReadDWord(); mask = 0xFFFFFFFF; break;
05926     case 2: cond_val = buf->ReadWord();  mask = 0x0000FFFF; break;
05927     case 1: cond_val = buf->ReadByte();  mask = 0x000000FF; break;
05928     default: break;
05929   }
05930 
05931   if (param < 0x80 && _cur.grffile->param_end <= param) {
05932     grfmsg(7, "SkipIf: Param %d undefined, skipping test", param);
05933     return;
05934   }
05935 
05936   uint32 param_val = GetParamVal(param, &cond_val);
05937 
05938   grfmsg(7, "SkipIf: Test condtype %d, param 0x%08X, condval 0x%08X", condtype, param_val, cond_val);
05939 
05940   /*
05941    * Parameter (variable in specs) 0x88 can only have GRF ID checking
05942    * conditions, except conditions 0x0B, 0x0C (cargo availability) and
05943    * 0x0D, 0x0E (Rail type availability) as those ignore the parameter.
05944    * So, when the condition type is one of those, the specific variable
05945    * 0x88 code is skipped, so the "general" code for the cargo
05946    * availability conditions kicks in.
05947    */
05948   if (param == 0x88 && (condtype < 0x0B || condtype > 0x0E)) {
05949     /* GRF ID checks */
05950 
05951     GRFConfig *c = GetGRFConfig(cond_val, mask);
05952 
05953     if (c != NULL && HasBit(c->flags, GCF_STATIC) && !HasBit(_cur.grfconfig->flags, GCF_STATIC) && _networking) {
05954       DisableStaticNewGRFInfluencingNonStaticNewGRFs(c);
05955       c = NULL;
05956     }
05957 
05958     if (condtype != 10 && c == NULL) {
05959       grfmsg(7, "SkipIf: GRFID 0x%08X unknown, skipping test", BSWAP32(cond_val));
05960       return;
05961     }
05962 
05963     switch (condtype) {
05964       /* Tests 0x06 to 0x0A are only for param 0x88, GRFID checks */
05965       case 0x06: // Is GRFID active?
05966         result = c->status == GCS_ACTIVATED;
05967         break;
05968 
05969       case 0x07: // Is GRFID non-active?
05970         result = c->status != GCS_ACTIVATED;
05971         break;
05972 
05973       case 0x08: // GRFID is not but will be active?
05974         result = c->status == GCS_INITIALISED;
05975         break;
05976 
05977       case 0x09: // GRFID is or will be active?
05978         result = c->status == GCS_ACTIVATED || c->status == GCS_INITIALISED;
05979         break;
05980 
05981       case 0x0A: // GRFID is not nor will be active
05982         /* This is the only condtype that doesn't get ignored if the GRFID is not found */
05983         result = c == NULL || c->flags == GCS_DISABLED || c->status == GCS_NOT_FOUND;
05984         break;
05985 
05986       default: grfmsg(1, "SkipIf: Unsupported GRF condition type %02X. Ignoring", condtype); return;
05987     }
05988   } else {
05989     /* Parameter or variable tests */
05990     switch (condtype) {
05991       case 0x00: result = !!(param_val & (1 << cond_val));
05992         break;
05993       case 0x01: result = !(param_val & (1 << cond_val));
05994         break;
05995       case 0x02: result = (param_val & mask) == cond_val;
05996         break;
05997       case 0x03: result = (param_val & mask) != cond_val;
05998         break;
05999       case 0x04: result = (param_val & mask) < cond_val;
06000         break;
06001       case 0x05: result = (param_val & mask) > cond_val;
06002         break;
06003       case 0x0B: result = GetCargoIDByLabel(BSWAP32(cond_val)) == CT_INVALID;
06004         break;
06005       case 0x0C: result = GetCargoIDByLabel(BSWAP32(cond_val)) != CT_INVALID;
06006         break;
06007       case 0x0D: result = GetRailTypeByLabel(BSWAP32(cond_val)) == INVALID_RAILTYPE;
06008         break;
06009       case 0x0E: result = GetRailTypeByLabel(BSWAP32(cond_val)) != INVALID_RAILTYPE;
06010         break;
06011 
06012       default: grfmsg(1, "SkipIf: Unsupported condition type %02X. Ignoring", condtype); return;
06013     }
06014   }
06015 
06016   if (!result) {
06017     grfmsg(2, "SkipIf: Not skipping sprites, test was false");
06018     return;
06019   }
06020 
06021   uint8 numsprites = buf->ReadByte();
06022 
06023   /* numsprites can be a GOTO label if it has been defined in the GRF
06024    * file. The jump will always be the first matching label that follows
06025    * the current nfo_line. If no matching label is found, the first matching
06026    * label in the file is used. */
06027   GRFLabel *choice = NULL;
06028   for (GRFLabel *label = _cur.grffile->label; label != NULL; label = label->next) {
06029     if (label->label != numsprites) continue;
06030 
06031     /* Remember a goto before the current line */
06032     if (choice == NULL) choice = label;
06033     /* If we find a label here, this is definitely good */
06034     if (label->nfo_line > _cur.nfo_line) {
06035       choice = label;
06036       break;
06037     }
06038   }
06039 
06040   if (choice != NULL) {
06041     grfmsg(2, "SkipIf: Jumping to label 0x%0X at line %d, test was true", choice->label, choice->nfo_line);
06042     FioSeekTo(choice->pos, SEEK_SET);
06043     _cur.nfo_line = choice->nfo_line;
06044     return;
06045   }
06046 
06047   grfmsg(2, "SkipIf: Skipping %d sprites, test was true", numsprites);
06048   _cur.skip_sprites = numsprites;
06049   if (_cur.skip_sprites == 0) {
06050     /* Zero means there are no sprites to skip, so
06051      * we use -1 to indicate that all further
06052      * sprites should be skipped. */
06053     _cur.skip_sprites = -1;
06054 
06055     /* If an action 8 hasn't been encountered yet, disable the grf. */
06056     if (_cur.grfconfig->status != (_cur.stage < GLS_RESERVE ? GCS_INITIALISED : GCS_ACTIVATED)) {
06057       DisableGrf();
06058     }
06059   }
06060 }
06061 
06062 
06063 /* Action 0x08 (GLS_FILESCAN) */
06064 static void ScanInfo(ByteReader *buf)
06065 {
06066   uint8 grf_version = buf->ReadByte();
06067   uint32 grfid      = buf->ReadDWord();
06068   const char *name  = buf->ReadString();
06069 
06070   _cur.grfconfig->ident.grfid = grfid;
06071 
06072   if (grf_version < 2 || grf_version > 8) {
06073     SetBit(_cur.grfconfig->flags, GCF_INVALID);
06074     DEBUG(grf, 0, "%s: NewGRF \"%s\" (GRFID %08X) uses GRF version %d, which is incompatible with this version of OpenTTD.", _cur.grfconfig->filename, name, BSWAP32(grfid), grf_version);
06075   }
06076 
06077   /* GRF IDs starting with 0xFF are reserved for internal TTDPatch use */
06078   if (GB(grfid, 24, 8) == 0xFF) SetBit(_cur.grfconfig->flags, GCF_SYSTEM);
06079 
06080   AddGRFTextToList(&_cur.grfconfig->name->text, 0x7F, grfid, false, name);
06081 
06082   if (buf->HasData()) {
06083     const char *info = buf->ReadString();
06084     AddGRFTextToList(&_cur.grfconfig->info->text, 0x7F, grfid, true, info);
06085   }
06086 
06087   /* GLS_INFOSCAN only looks for the action 8, so we can skip the rest of the file */
06088   _cur.skip_sprites = -1;
06089 }
06090 
06091 /* Action 0x08 */
06092 static void GRFInfo(ByteReader *buf)
06093 {
06094   /* <08> <version> <grf-id> <name> <info>
06095    *
06096    * B version       newgrf version, currently 06
06097    * 4*B grf-id      globally unique ID of this .grf file
06098    * S name          name of this .grf set
06099    * S info          string describing the set, and e.g. author and copyright */
06100 
06101   uint8 version    = buf->ReadByte();
06102   uint32 grfid     = buf->ReadDWord();
06103   const char *name = buf->ReadString();
06104 
06105   if (_cur.stage < GLS_RESERVE && _cur.grfconfig->status != GCS_UNKNOWN) {
06106     DisableGrf(STR_NEWGRF_ERROR_MULTIPLE_ACTION_8);
06107     return;
06108   }
06109 
06110   if (_cur.grffile->grfid != grfid) {
06111     DEBUG(grf, 0, "GRFInfo: GRFID %08X in FILESCAN stage does not match GRFID %08X in INIT/RESERVE/ACTIVATION stage", BSWAP32(_cur.grffile->grfid), BSWAP32(grfid));
06112     _cur.grffile->grfid = grfid;
06113   }
06114 
06115   _cur.grffile->grf_version = version;
06116   _cur.grfconfig->status = _cur.stage < GLS_RESERVE ? GCS_INITIALISED : GCS_ACTIVATED;
06117 
06118   /* Do swap the GRFID for displaying purposes since people expect that */
06119   DEBUG(grf, 1, "GRFInfo: Loaded GRFv%d set %08X - %s (palette: %s, version: %i)", version, BSWAP32(grfid), name, (_cur.grfconfig->palette & GRFP_USE_MASK) ? "Windows" : "DOS", _cur.grfconfig->version);
06120 }
06121 
06122 /* Action 0x0A */
06123 static void SpriteReplace(ByteReader *buf)
06124 {
06125   /* <0A> <num-sets> <set1> [<set2> ...]
06126    * <set>: <num-sprites> <first-sprite>
06127    *
06128    * B num-sets      How many sets of sprites to replace.
06129    * Each set:
06130    * B num-sprites   How many sprites are in this set
06131    * W first-sprite  First sprite number to replace */
06132 
06133   uint8 num_sets = buf->ReadByte();
06134 
06135   for (uint i = 0; i < num_sets; i++) {
06136     uint8 num_sprites = buf->ReadByte();
06137     uint16 first_sprite = buf->ReadWord();
06138 
06139     grfmsg(2, "SpriteReplace: [Set %d] Changing %d sprites, beginning with %d",
06140       i, num_sprites, first_sprite
06141     );
06142 
06143     for (uint j = 0; j < num_sprites; j++) {
06144       int load_index = first_sprite + j;
06145       _cur.nfo_line++;
06146       LoadNextSprite(load_index, _cur.file_index, _cur.nfo_line, _cur.grf_container_ver); // XXX
06147 
06148       /* Shore sprites now located at different addresses.
06149        * So detect when the old ones get replaced. */
06150       if (IsInsideMM(load_index, SPR_ORIGINALSHORE_START, SPR_ORIGINALSHORE_END + 1)) {
06151         if (_loaded_newgrf_features.shore != SHORE_REPLACE_ACTION_5) _loaded_newgrf_features.shore = SHORE_REPLACE_ACTION_A;
06152       }
06153     }
06154   }
06155 }
06156 
06157 /* Action 0x0A (SKIP) */
06158 static void SkipActA(ByteReader *buf)
06159 {
06160   uint8 num_sets = buf->ReadByte();
06161 
06162   for (uint i = 0; i < num_sets; i++) {
06163     /* Skip the sprites this replaces */
06164     _cur.skip_sprites += buf->ReadByte();
06165     /* But ignore where they go */
06166     buf->ReadWord();
06167   }
06168 
06169   grfmsg(3, "SkipActA: Skipping %d sprites", _cur.skip_sprites);
06170 }
06171 
06172 /* Action 0x0B */
06173 static void GRFLoadError(ByteReader *buf)
06174 {
06175   /* <0B> <severity> <language-id> <message-id> [<message...> 00] [<data...>] 00 [<parnum>]
06176    *
06177    * B severity      00: notice, contine loading grf file
06178    *                 01: warning, continue loading grf file
06179    *                 02: error, but continue loading grf file, and attempt
06180    *                     loading grf again when loading or starting next game
06181    *                 03: error, abort loading and prevent loading again in
06182    *                     the future (only when restarting the patch)
06183    * B language-id   see action 4, use 1F for built-in error messages
06184    * B message-id    message to show, see below
06185    * S message       for custom messages (message-id FF), text of the message
06186    *                 not present for built-in messages.
06187    * V data          additional data for built-in (or custom) messages
06188    * B parnum        parameter numbers to be shown in the message (maximum of 2) */
06189 
06190   static const StringID msgstr[] = {
06191     STR_NEWGRF_ERROR_VERSION_NUMBER,
06192     STR_NEWGRF_ERROR_DOS_OR_WINDOWS,
06193     STR_NEWGRF_ERROR_UNSET_SWITCH,
06194     STR_NEWGRF_ERROR_INVALID_PARAMETER,
06195     STR_NEWGRF_ERROR_LOAD_BEFORE,
06196     STR_NEWGRF_ERROR_LOAD_AFTER,
06197     STR_NEWGRF_ERROR_OTTD_VERSION_NUMBER,
06198   };
06199 
06200   static const StringID sevstr[] = {
06201     STR_NEWGRF_ERROR_MSG_INFO,
06202     STR_NEWGRF_ERROR_MSG_WARNING,
06203     STR_NEWGRF_ERROR_MSG_ERROR,
06204     STR_NEWGRF_ERROR_MSG_FATAL
06205   };
06206 
06207   byte severity   = buf->ReadByte();
06208   byte lang       = buf->ReadByte();
06209   byte message_id = buf->ReadByte();
06210 
06211   /* Skip the error if it isn't valid for the current language. */
06212   if (!CheckGrfLangID(lang, _cur.grffile->grf_version)) return;
06213 
06214   /* Skip the error until the activation stage unless bit 7 of the severity
06215    * is set. */
06216   if (!HasBit(severity, 7) && _cur.stage == GLS_INIT) {
06217     grfmsg(7, "GRFLoadError: Skipping non-fatal GRFLoadError in stage %d", _cur.stage);
06218     return;
06219   }
06220   ClrBit(severity, 7);
06221 
06222   if (severity >= lengthof(sevstr)) {
06223     grfmsg(7, "GRFLoadError: Invalid severity id %d. Setting to 2 (non-fatal error).", severity);
06224     severity = 2;
06225   } else if (severity == 3) {
06226     /* This is a fatal error, so make sure the GRF is deactivated and no
06227      * more of it gets loaded. */
06228     DisableGrf();
06229 
06230     /* Make sure we show fatal errors, instead of silly infos from before */
06231     delete _cur.grfconfig->error;
06232     _cur.grfconfig->error = NULL;
06233   }
06234 
06235   if (message_id >= lengthof(msgstr) && message_id != 0xFF) {
06236     grfmsg(7, "GRFLoadError: Invalid message id.");
06237     return;
06238   }
06239 
06240   if (buf->Remaining() <= 1) {
06241     grfmsg(7, "GRFLoadError: No message data supplied.");
06242     return;
06243   }
06244 
06245   /* For now we can only show one message per newgrf file. */
06246   if (_cur.grfconfig->error != NULL) return;
06247 
06248   GRFError *error = new GRFError(sevstr[severity]);
06249 
06250   if (message_id == 0xFF) {
06251     /* This is a custom error message. */
06252     if (buf->HasData()) {
06253       const char *message = buf->ReadString();
06254 
06255       error->custom_message = TranslateTTDPatchCodes(_cur.grffile->grfid, lang, true, message, NULL, SCC_RAW_STRING_POINTER);
06256     } else {
06257       grfmsg(7, "GRFLoadError: No custom message supplied.");
06258       error->custom_message = strdup("");
06259     }
06260   } else {
06261     error->message = msgstr[message_id];
06262   }
06263 
06264   if (buf->HasData()) {
06265     const char *data = buf->ReadString();
06266 
06267     error->data = TranslateTTDPatchCodes(_cur.grffile->grfid, lang, true, data);
06268   } else {
06269     grfmsg(7, "GRFLoadError: No message data supplied.");
06270     error->data = strdup("");
06271   }
06272 
06273   /* Only two parameter numbers can be used in the string. */
06274   for (uint i = 0; i < lengthof(error->param_value) && buf->HasData(); i++) {
06275     uint param_number = buf->ReadByte();
06276     error->param_value[i] = _cur.grffile->GetParam(param_number);
06277   }
06278 
06279   _cur.grfconfig->error = error;
06280 }
06281 
06282 /* Action 0x0C */
06283 static void GRFComment(ByteReader *buf)
06284 {
06285   /* <0C> [<ignored...>]
06286    *
06287    * V ignored       Anything following the 0C is ignored */
06288 
06289   if (!buf->HasData()) return;
06290 
06291   const char *text = buf->ReadString();
06292   grfmsg(2, "GRFComment: %s", text);
06293 }
06294 
06295 /* Action 0x0D (GLS_SAFETYSCAN) */
06296 static void SafeParamSet(ByteReader *buf)
06297 {
06298   uint8 target = buf->ReadByte();
06299 
06300   /* Only writing GRF parameters is considered safe */
06301   if (target < 0x80) return;
06302 
06303   /* GRM could be unsafe, but as here it can only happen after other GRFs
06304    * are loaded, it should be okay. If the GRF tried to use the slots it
06305    * reserved, it would be marked unsafe anyway. GRM for (e.g. bridge)
06306    * sprites  is considered safe. */
06307 
06308   SetBit(_cur.grfconfig->flags, GCF_UNSAFE);
06309 
06310   /* Skip remainder of GRF */
06311   _cur.skip_sprites = -1;
06312 }
06313 
06314 
06315 static uint32 GetPatchVariable(uint8 param)
06316 {
06317   switch (param) {
06318     /* start year - 1920 */
06319     case 0x0B: return max(_settings_game.game_creation.starting_year, ORIGINAL_BASE_YEAR) - ORIGINAL_BASE_YEAR;
06320 
06321     /* freight trains weight factor */
06322     case 0x0E: return _settings_game.vehicle.freight_trains;
06323 
06324     /* empty wagon speed increase */
06325     case 0x0F: return 0;
06326 
06327     /* plane speed factor; our patch option is reversed from TTDPatch's,
06328      * the following is good for 1x, 2x and 4x (most common?) and...
06329      * well not really for 3x. */
06330     case 0x10:
06331       switch (_settings_game.vehicle.plane_speed) {
06332         default:
06333         case 4: return 1;
06334         case 3: return 2;
06335         case 2: return 2;
06336         case 1: return 4;
06337       }
06338 
06339 
06340     /* 2CC colourmap base sprite */
06341     case 0x11: return SPR_2CCMAP_BASE;
06342 
06343     /* map size: format = -MABXYSS
06344      * M  : the type of map
06345      *       bit 0 : set   : squared map. Bit 1 is now not relevant
06346      *               clear : rectangle map. Bit 1 will indicate the bigger edge of the map
06347      *       bit 1 : set   : Y is the bigger edge. Bit 0 is clear
06348      *               clear : X is the bigger edge.
06349      * A  : minimum edge(log2) of the map
06350      * B  : maximum edge(log2) of the map
06351      * XY : edges(log2) of each side of the map.
06352      * SS : combination of both X and Y, thus giving the size(log2) of the map
06353      */
06354     case 0x13: {
06355       byte map_bits = 0;
06356       byte log_X = MapLogX() - 6; // substraction is required to make the minimal size (64) zero based
06357       byte log_Y = MapLogY() - 6;
06358       byte max_edge = max(log_X, log_Y);
06359 
06360       if (log_X == log_Y) { // we have a squared map, since both edges are identical
06361         SetBit(map_bits, 0);
06362       } else {
06363         if (max_edge == log_Y) SetBit(map_bits, 1); // edge Y been the biggest, mark it
06364       }
06365 
06366       return (map_bits << 24) | (min(log_X, log_Y) << 20) | (max_edge << 16) |
06367         (log_X << 12) | (log_Y << 8) | (log_X + log_Y);
06368     }
06369 
06370     /* The maximum height of the map. */
06371     case 0x14:
06372       return MAX_TILE_HEIGHT;
06373 
06374     /* Extra foundations base sprite */
06375     case 0x15:
06376       return SPR_SLOPES_BASE;
06377 
06378     /* Shore base sprite */
06379     case 0x16:
06380       return SPR_SHORE_BASE;
06381 
06382     default:
06383       grfmsg(2, "ParamSet: Unknown Patch variable 0x%02X.", param);
06384       return 0;
06385   }
06386 }
06387 
06388 
06389 static uint32 PerformGRM(uint32 *grm, uint16 num_ids, uint16 count, uint8 op, uint8 target, const char *type)
06390 {
06391   uint start = 0;
06392   uint size  = 0;
06393 
06394   if (op == 6) {
06395     /* Return GRFID of set that reserved ID */
06396     return grm[_cur.grffile->GetParam(target)];
06397   }
06398 
06399   /* With an operation of 2 or 3, we want to reserve a specific block of IDs */
06400   if (op == 2 || op == 3) start = _cur.grffile->GetParam(target);
06401 
06402   for (uint i = start; i < num_ids; i++) {
06403     if (grm[i] == 0) {
06404       size++;
06405     } else {
06406       if (op == 2 || op == 3) break;
06407       start = i + 1;
06408       size = 0;
06409     }
06410 
06411     if (size == count) break;
06412   }
06413 
06414   if (size == count) {
06415     /* Got the slot... */
06416     if (op == 0 || op == 3) {
06417       grfmsg(2, "ParamSet: GRM: Reserving %d %s at %d", count, type, start);
06418       for (uint i = 0; i < count; i++) grm[start + i] = _cur.grffile->grfid;
06419     }
06420     return start;
06421   }
06422 
06423   /* Unable to allocate */
06424   if (op != 4 && op != 5) {
06425     /* Deactivate GRF */
06426     grfmsg(0, "ParamSet: GRM: Unable to allocate %d %s, deactivating", count, type);
06427     DisableGrf(STR_NEWGRF_ERROR_GRM_FAILED);
06428     return UINT_MAX;
06429   }
06430 
06431   grfmsg(1, "ParamSet: GRM: Unable to allocate %d %s", count, type);
06432   return UINT_MAX;
06433 }
06434 
06435 
06437 static void ParamSet(ByteReader *buf)
06438 {
06439   /* <0D> <target> <operation> <source1> <source2> [<data>]
06440    *
06441    * B target        parameter number where result is stored
06442    * B operation     operation to perform, see below
06443    * B source1       first source operand
06444    * B source2       second source operand
06445    * D data          data to use in the calculation, not necessary
06446    *                 if both source1 and source2 refer to actual parameters
06447    *
06448    * Operations
06449    * 00      Set parameter equal to source1
06450    * 01      Addition, source1 + source2
06451    * 02      Subtraction, source1 - source2
06452    * 03      Unsigned multiplication, source1 * source2 (both unsigned)
06453    * 04      Signed multiplication, source1 * source2 (both signed)
06454    * 05      Unsigned bit shift, source1 by source2 (source2 taken to be a
06455    *         signed quantity; left shift if positive and right shift if
06456    *         negative, source1 is unsigned)
06457    * 06      Signed bit shift, source1 by source2
06458    *         (source2 like in 05, and source1 as well)
06459    */
06460 
06461   uint8 target = buf->ReadByte();
06462   uint8 oper   = buf->ReadByte();
06463   uint32 src1  = buf->ReadByte();
06464   uint32 src2  = buf->ReadByte();
06465 
06466   uint32 data = 0;
06467   if (buf->Remaining() >= 4) data = buf->ReadDWord();
06468 
06469   /* You can add 80 to the operation to make it apply only if the target
06470    * is not defined yet.  In this respect, a parameter is taken to be
06471    * defined if any of the following applies:
06472    * - it has been set to any value in the newgrf(w).cfg parameter list
06473    * - it OR A PARAMETER WITH HIGHER NUMBER has been set to any value by
06474    *   an earlier action D */
06475   if (HasBit(oper, 7)) {
06476     if (target < 0x80 && target < _cur.grffile->param_end) {
06477       grfmsg(7, "ParamSet: Param %u already defined, skipping", target);
06478       return;
06479     }
06480 
06481     oper = GB(oper, 0, 7);
06482   }
06483 
06484   if (src2 == 0xFE) {
06485     if (GB(data, 0, 8) == 0xFF) {
06486       if (data == 0x0000FFFF) {
06487         /* Patch variables */
06488         src1 = GetPatchVariable(src1);
06489       } else {
06490         /* GRF Resource Management */
06491         uint8  op      = src1;
06492         uint8  feature = GB(data, 8, 8);
06493         uint16 count   = GB(data, 16, 16);
06494 
06495         if (_cur.stage == GLS_RESERVE) {
06496           if (feature == 0x08) {
06497             /* General sprites */
06498             if (op == 0) {
06499               /* Check if the allocated sprites will fit below the original sprite limit */
06500               if (_cur.spriteid + count >= 16384) {
06501                 grfmsg(0, "ParamSet: GRM: Unable to allocate %d sprites; try changing NewGRF order", count);
06502                 DisableGrf(STR_NEWGRF_ERROR_GRM_FAILED);
06503                 return;
06504               }
06505 
06506               /* Reserve space at the current sprite ID */
06507               grfmsg(4, "ParamSet: GRM: Allocated %d sprites at %d", count, _cur.spriteid);
06508               _grm_sprites[GRFLocation(_cur.grffile->grfid, _cur.nfo_line)] = _cur.spriteid;
06509               _cur.spriteid += count;
06510             }
06511           }
06512           /* Ignore GRM result during reservation */
06513           src1 = 0;
06514         } else if (_cur.stage == GLS_ACTIVATION) {
06515           switch (feature) {
06516             case 0x00: // Trains
06517             case 0x01: // Road Vehicles
06518             case 0x02: // Ships
06519             case 0x03: // Aircraft
06520               if (!_settings_game.vehicle.dynamic_engines) {
06521                 src1 = PerformGRM(&_grm_engines[_engine_offsets[feature]], _engine_counts[feature], count, op, target, "vehicles");
06522                 if (_cur.skip_sprites == -1) return;
06523               } else {
06524                 /* GRM does not apply for dynamic engine allocation. */
06525                 switch (op) {
06526                   case 2:
06527                   case 3:
06528                     src1 = _cur.grffile->GetParam(target);
06529                     break;
06530 
06531                   default:
06532                     src1 = 0;
06533                     break;
06534                 }
06535               }
06536               break;
06537 
06538             case 0x08: // General sprites
06539               switch (op) {
06540                 case 0:
06541                   /* Return space reserved during reservation stage */
06542                   src1 = _grm_sprites[GRFLocation(_cur.grffile->grfid, _cur.nfo_line)];
06543                   grfmsg(4, "ParamSet: GRM: Using pre-allocated sprites at %d", src1);
06544                   break;
06545 
06546                 case 1:
06547                   src1 = _cur.spriteid;
06548                   break;
06549 
06550                 default:
06551                   grfmsg(1, "ParamSet: GRM: Unsupported operation %d for general sprites", op);
06552                   return;
06553               }
06554               break;
06555 
06556             case 0x0B: // Cargo
06557               /* There are two ranges: one for cargo IDs and one for cargo bitmasks */
06558               src1 = PerformGRM(_grm_cargoes, NUM_CARGO * 2, count, op, target, "cargoes");
06559               if (_cur.skip_sprites == -1) return;
06560               break;
06561 
06562             default: grfmsg(1, "ParamSet: GRM: Unsupported feature 0x%X", feature); return;
06563           }
06564         } else {
06565           /* Ignore GRM during initialization */
06566           src1 = 0;
06567         }
06568       }
06569     } else {
06570       /* Read another GRF File's parameter */
06571       const GRFFile *file = GetFileByGRFID(data);
06572       GRFConfig *c = GetGRFConfig(data);
06573       if (c != NULL && HasBit(c->flags, GCF_STATIC) && !HasBit(_cur.grfconfig->flags, GCF_STATIC) && _networking) {
06574         /* Disable the read GRF if it is a static NewGRF. */
06575         DisableStaticNewGRFInfluencingNonStaticNewGRFs(c);
06576         src1 = 0;
06577       } else if (file == NULL || (c != NULL && c->status == GCS_DISABLED)) {
06578         src1 = 0;
06579       } else if (src1 == 0xFE) {
06580         src1 = c->version;
06581       } else {
06582         src1 = file->GetParam(src1);
06583       }
06584     }
06585   } else {
06586     /* The source1 and source2 operands refer to the grf parameter number
06587      * like in action 6 and 7.  In addition, they can refer to the special
06588      * variables available in action 7, or they can be FF to use the value
06589      * of <data>.  If referring to parameters that are undefined, a value
06590      * of 0 is used instead.  */
06591     src1 = (src1 == 0xFF) ? data : GetParamVal(src1, NULL);
06592     src2 = (src2 == 0xFF) ? data : GetParamVal(src2, NULL);
06593   }
06594 
06595   /* TODO: You can access the parameters of another GRF file by using
06596    * source2=FE, source1=the other GRF's parameter number and data=GRF
06597    * ID.  This is only valid with operation 00 (set).  If the GRF ID
06598    * cannot be found, a value of 0 is used for the parameter value
06599    * instead. */
06600 
06601   uint32 res;
06602   switch (oper) {
06603     case 0x00:
06604       res = src1;
06605       break;
06606 
06607     case 0x01:
06608       res = src1 + src2;
06609       break;
06610 
06611     case 0x02:
06612       res = src1 - src2;
06613       break;
06614 
06615     case 0x03:
06616       res = src1 * src2;
06617       break;
06618 
06619     case 0x04:
06620       res = (int32)src1 * (int32)src2;
06621       break;
06622 
06623     case 0x05:
06624       if ((int32)src2 < 0) {
06625         res = src1 >> -(int32)src2;
06626       } else {
06627         res = src1 << src2;
06628       }
06629       break;
06630 
06631     case 0x06:
06632       if ((int32)src2 < 0) {
06633         res = (int32)src1 >> -(int32)src2;
06634       } else {
06635         res = (int32)src1 << src2;
06636       }
06637       break;
06638 
06639     case 0x07: // Bitwise AND
06640       res = src1 & src2;
06641       break;
06642 
06643     case 0x08: // Bitwise OR
06644       res = src1 | src2;
06645       break;
06646 
06647     case 0x09: // Unsigned division
06648       if (src2 == 0) {
06649         res = src1;
06650       } else {
06651         res = src1 / src2;
06652       }
06653       break;
06654 
06655     case 0x0A: // Signed divison
06656       if (src2 == 0) {
06657         res = src1;
06658       } else {
06659         res = (int32)src1 / (int32)src2;
06660       }
06661       break;
06662 
06663     case 0x0B: // Unsigned modulo
06664       if (src2 == 0) {
06665         res = src1;
06666       } else {
06667         res = src1 % src2;
06668       }
06669       break;
06670 
06671     case 0x0C: // Signed modulo
06672       if (src2 == 0) {
06673         res = src1;
06674       } else {
06675         res = (int32)src1 % (int32)src2;
06676       }
06677       break;
06678 
06679     default: grfmsg(0, "ParamSet: Unknown operation %d, skipping", oper); return;
06680   }
06681 
06682   switch (target) {
06683     case 0x8E: // Y-Offset for train sprites
06684       _cur.grffile->traininfo_vehicle_pitch = res;
06685       break;
06686 
06687     case 0x8F: { // Rail track type cost factors
06688       extern RailtypeInfo _railtypes[RAILTYPE_END];
06689       _railtypes[RAILTYPE_RAIL].cost_multiplier = GB(res, 0, 8);
06690       if (_settings_game.vehicle.disable_elrails) {
06691         _railtypes[RAILTYPE_ELECTRIC].cost_multiplier = GB(res, 0, 8);
06692         _railtypes[RAILTYPE_MONO].cost_multiplier = GB(res, 8, 8);
06693       } else {
06694         _railtypes[RAILTYPE_ELECTRIC].cost_multiplier = GB(res, 8, 8);
06695         _railtypes[RAILTYPE_MONO].cost_multiplier = GB(res, 16, 8);
06696       }
06697       _railtypes[RAILTYPE_MAGLEV].cost_multiplier = GB(res, 16, 8);
06698       break;
06699     }
06700 
06701     /* @todo implement */
06702     case 0x93: // Tile refresh offset to left
06703     case 0x94: // Tile refresh offset to right
06704     case 0x95: // Tile refresh offset upwards
06705     case 0x96: // Tile refresh offset downwards
06706     case 0x97: // Snow line height
06707     case 0x99: // Global ID offset
06708       grfmsg(7, "ParamSet: Skipping unimplemented target 0x%02X", target);
06709       break;
06710 
06711     case 0x9E: // Miscellaneous GRF features
06712       /* Set train list engine width */
06713       _cur.grffile->traininfo_vehicle_width = HasBit(res, GMB_TRAIN_WIDTH_32_PIXELS) ? VEHICLEINFO_FULL_VEHICLE_WIDTH : TRAININFO_DEFAULT_VEHICLE_WIDTH;
06714       /* Remove the local flags from the global flags */
06715       ClrBit(res, GMB_TRAIN_WIDTH_32_PIXELS);
06716 
06717       _misc_grf_features = res;
06718       break;
06719 
06720     case 0x9F: // locale-dependent settings
06721       grfmsg(7, "ParamSet: Skipping unimplemented target 0x%02X", target);
06722       break;
06723 
06724     default:
06725       if (target < 0x80) {
06726         _cur.grffile->param[target] = res;
06727         /* param is zeroed by default */
06728         if (target + 1U > _cur.grffile->param_end) _cur.grffile->param_end = target + 1;
06729       } else {
06730         grfmsg(7, "ParamSet: Skipping unknown target 0x%02X", target);
06731       }
06732       break;
06733   }
06734 }
06735 
06736 /* Action 0x0E (GLS_SAFETYSCAN) */
06737 static void SafeGRFInhibit(ByteReader *buf)
06738 {
06739   /* <0E> <num> <grfids...>
06740    *
06741    * B num           Number of GRFIDs that follow
06742    * D grfids        GRFIDs of the files to deactivate */
06743 
06744   uint8 num = buf->ReadByte();
06745 
06746   for (uint i = 0; i < num; i++) {
06747     uint32 grfid = buf->ReadDWord();
06748 
06749     /* GRF is unsafe it if tries to deactivate other GRFs */
06750     if (grfid != _cur.grfconfig->ident.grfid) {
06751       SetBit(_cur.grfconfig->flags, GCF_UNSAFE);
06752 
06753       /* Skip remainder of GRF */
06754       _cur.skip_sprites = -1;
06755 
06756       return;
06757     }
06758   }
06759 }
06760 
06761 /* Action 0x0E */
06762 static void GRFInhibit(ByteReader *buf)
06763 {
06764   /* <0E> <num> <grfids...>
06765    *
06766    * B num           Number of GRFIDs that follow
06767    * D grfids        GRFIDs of the files to deactivate */
06768 
06769   uint8 num = buf->ReadByte();
06770 
06771   for (uint i = 0; i < num; i++) {
06772     uint32 grfid = buf->ReadDWord();
06773     GRFConfig *file = GetGRFConfig(grfid);
06774 
06775     /* Unset activation flag */
06776     if (file != NULL && file != _cur.grfconfig) {
06777       grfmsg(2, "GRFInhibit: Deactivating file '%s'", file->filename);
06778       GRFError *error = DisableGrf(STR_NEWGRF_ERROR_FORCEFULLY_DISABLED, file);
06779       error->data = strdup(_cur.grfconfig->GetName());
06780     }
06781   }
06782 }
06783 
06785 static void FeatureTownName(ByteReader *buf)
06786 {
06787   /* <0F> <id> <style-name> <num-parts> <parts>
06788    *
06789    * B id          ID of this definition in bottom 7 bits (final definition if bit 7 set)
06790    * V style-name  Name of the style (only for final definition)
06791    * B num-parts   Number of parts in this definition
06792    * V parts       The parts */
06793 
06794   uint32 grfid = _cur.grffile->grfid;
06795 
06796   GRFTownName *townname = AddGRFTownName(grfid);
06797 
06798   byte id = buf->ReadByte();
06799   grfmsg(6, "FeatureTownName: definition 0x%02X", id & 0x7F);
06800 
06801   if (HasBit(id, 7)) {
06802     /* Final definition */
06803     ClrBit(id, 7);
06804     bool new_scheme = _cur.grffile->grf_version >= 7;
06805 
06806     byte lang = buf->ReadByte();
06807 
06808     byte nb_gen = townname->nb_gen;
06809     do {
06810       ClrBit(lang, 7);
06811 
06812       const char *name = buf->ReadString();
06813 
06814       char *lang_name = TranslateTTDPatchCodes(grfid, lang, false, name);
06815       grfmsg(6, "FeatureTownName: lang 0x%X -> '%s'", lang, lang_name);
06816       free(lang_name);
06817 
06818       townname->name[nb_gen] = AddGRFString(grfid, id, lang, new_scheme, false, name, STR_UNDEFINED);
06819 
06820       lang = buf->ReadByte();
06821     } while (lang != 0);
06822     townname->id[nb_gen] = id;
06823     townname->nb_gen++;
06824   }
06825 
06826   byte nb = buf->ReadByte();
06827   grfmsg(6, "FeatureTownName: %u parts", nb);
06828 
06829   townname->nbparts[id] = nb;
06830   townname->partlist[id] = CallocT<NamePartList>(nb);
06831 
06832   for (int i = 0; i < nb; i++) {
06833     byte nbtext =  buf->ReadByte();
06834     townname->partlist[id][i].bitstart  = buf->ReadByte();
06835     townname->partlist[id][i].bitcount  = buf->ReadByte();
06836     townname->partlist[id][i].maxprob   = 0;
06837     townname->partlist[id][i].partcount = nbtext;
06838     townname->partlist[id][i].parts     = CallocT<NamePart>(nbtext);
06839     grfmsg(6, "FeatureTownName: part %d contains %d texts and will use GB(seed, %d, %d)", i, nbtext, townname->partlist[id][i].bitstart, townname->partlist[id][i].bitcount);
06840 
06841     for (int j = 0; j < nbtext; j++) {
06842       byte prob = buf->ReadByte();
06843 
06844       if (HasBit(prob, 7)) {
06845         byte ref_id = buf->ReadByte();
06846 
06847         if (townname->nbparts[ref_id] == 0) {
06848           grfmsg(0, "FeatureTownName: definition 0x%02X doesn't exist, deactivating", ref_id);
06849           DelGRFTownName(grfid);
06850           DisableGrf(STR_NEWGRF_ERROR_INVALID_ID);
06851           return;
06852         }
06853 
06854         grfmsg(6, "FeatureTownName: part %d, text %d, uses intermediate definition 0x%02X (with probability %d)", i, j, ref_id, prob & 0x7F);
06855         townname->partlist[id][i].parts[j].data.id = ref_id;
06856       } else {
06857         const char *text = buf->ReadString();
06858         townname->partlist[id][i].parts[j].data.text = TranslateTTDPatchCodes(grfid, 0, false, text);
06859         grfmsg(6, "FeatureTownName: part %d, text %d, '%s' (with probability %d)", i, j, townname->partlist[id][i].parts[j].data.text, prob);
06860       }
06861       townname->partlist[id][i].parts[j].prob = prob;
06862       townname->partlist[id][i].maxprob += GB(prob, 0, 7);
06863     }
06864     grfmsg(6, "FeatureTownName: part %d, total probability %d", i, townname->partlist[id][i].maxprob);
06865   }
06866 }
06867 
06869 static void DefineGotoLabel(ByteReader *buf)
06870 {
06871   /* <10> <label> [<comment>]
06872    *
06873    * B label      The label to define
06874    * V comment    Optional comment - ignored */
06875 
06876   byte nfo_label = buf->ReadByte();
06877 
06878   GRFLabel *label = MallocT<GRFLabel>(1);
06879   label->label    = nfo_label;
06880   label->nfo_line = _cur.nfo_line;
06881   label->pos      = FioGetPos();
06882   label->next     = NULL;
06883 
06884   /* Set up a linked list of goto targets which we will search in an Action 0x7/0x9 */
06885   if (_cur.grffile->label == NULL) {
06886     _cur.grffile->label = label;
06887   } else {
06888     /* Attach the label to the end of the list */
06889     GRFLabel *l;
06890     for (l = _cur.grffile->label; l->next != NULL; l = l->next) {}
06891     l->next = label;
06892   }
06893 
06894   grfmsg(2, "DefineGotoLabel: GOTO target with label 0x%02X", label->label);
06895 }
06896 
06901 static void ImportGRFSound(SoundEntry *sound)
06902 {
06903   const GRFFile *file;
06904   uint32 grfid = FioReadDword();
06905   SoundID sound_id = FioReadWord();
06906 
06907   file = GetFileByGRFID(grfid);
06908   if (file == NULL || file->sound_offset == 0) {
06909     grfmsg(1, "ImportGRFSound: Source file not available");
06910     return;
06911   }
06912 
06913   if (sound_id >= file->num_sounds) {
06914     grfmsg(1, "ImportGRFSound: Sound effect %d is invalid", sound_id);
06915     return;
06916   }
06917 
06918   grfmsg(2, "ImportGRFSound: Copying sound %d (%d) from file %X", sound_id, file->sound_offset + sound_id, grfid);
06919 
06920   *sound = *GetSound(file->sound_offset + sound_id);
06921 
06922   /* Reset volume and priority, which TTDPatch doesn't copy */
06923   sound->volume   = 128;
06924   sound->priority = 0;
06925 }
06926 
06932 static void LoadGRFSound(size_t offs, SoundEntry *sound)
06933 {
06934   /* Set default volume and priority */
06935   sound->volume = 0x80;
06936   sound->priority = 0;
06937 
06938   if (offs != SIZE_MAX) {
06939     /* Sound is present in the NewGRF. */
06940     sound->file_slot = _cur.file_index;
06941     sound->file_offset = offs;
06942     sound->grf_container_ver = _cur.grf_container_ver;
06943   }
06944 }
06945 
06946 /* Action 0x11 */
06947 static void GRFSound(ByteReader *buf)
06948 {
06949   /* <11> <num>
06950    *
06951    * W num      Number of sound files that follow */
06952 
06953   uint16 num = buf->ReadWord();
06954   if (num == 0) return;
06955 
06956   SoundEntry *sound;
06957   if (_cur.grffile->sound_offset == 0) {
06958     _cur.grffile->sound_offset = GetNumSounds();
06959     _cur.grffile->num_sounds = num;
06960     sound = AllocateSound(num);
06961   } else {
06962     sound = GetSound(_cur.grffile->sound_offset);
06963   }
06964 
06965   for (int i = 0; i < num; i++) {
06966     _cur.nfo_line++;
06967 
06968     /* Check whether the index is in range. This might happen if multiple action 11 are present.
06969      * While this is invalid, we do not check for this. But we should prevent it from causing bigger trouble */
06970     bool invalid = i >= _cur.grffile->num_sounds;
06971 
06972     size_t offs = FioGetPos();
06973 
06974     uint32 len = _cur.grf_container_ver >= 2 ? FioReadDword() : FioReadWord();
06975     byte type = FioReadByte();
06976 
06977     if (_cur.grf_container_ver >= 2 && type == 0xFD) {
06978       /* Reference to sprite section. */
06979       if (invalid) {
06980         grfmsg(1, "GRFSound: Sound index out of range (multiple Action 11?)");
06981         FioSkipBytes(len);
06982       } else if (len != 4) {
06983         grfmsg(1, "GRFSound: Invalid sprite section import");
06984         FioSkipBytes(len);
06985       } else {
06986         uint32 id = FioReadDword();
06987         if (_cur.stage == GLS_INIT) LoadGRFSound(GetGRFSpriteOffset(id), sound + i);
06988       }
06989       continue;
06990     }
06991 
06992     if (type != 0xFF) {
06993       grfmsg(1, "GRFSound: Unexpected RealSprite found, skipping");
06994       FioSkipBytes(7);
06995       SkipSpriteData(type, len - 8);
06996       continue;
06997     }
06998 
06999     if (invalid) {
07000       grfmsg(1, "GRFSound: Sound index out of range (multiple Action 11?)");
07001       FioSkipBytes(len);
07002     }
07003 
07004     byte action = FioReadByte();
07005     switch (action) {
07006       case 0xFF:
07007         /* Allocate sound only in init stage. */
07008         if (_cur.stage == GLS_INIT) {
07009           if (_cur.grf_container_ver >= 2) {
07010             grfmsg(1, "GRFSound: Inline sounds are not supported for container version >= 2");
07011           } else {
07012             LoadGRFSound(offs, sound + i);
07013           }
07014         }
07015         FioSkipBytes(len - 1); // already read <action>
07016         break;
07017 
07018       case 0xFE:
07019         if (_cur.stage == GLS_ACTIVATION) {
07020           /* XXX 'Action 0xFE' isn't really specified. It is only mentioned for
07021            * importing sounds, so this is probably all wrong... */
07022           if (FioReadByte() != 0) grfmsg(1, "GRFSound: Import type mismatch");
07023           ImportGRFSound(sound + i);
07024         } else {
07025           FioSkipBytes(len - 1); // already read <action>
07026         }
07027         break;
07028 
07029       default:
07030         grfmsg(1, "GRFSound: Unexpected Action %x found, skipping", action);
07031         FioSkipBytes(len - 1); // already read <action>
07032         break;
07033     }
07034   }
07035 }
07036 
07037 /* Action 0x11 (SKIP) */
07038 static void SkipAct11(ByteReader *buf)
07039 {
07040   /* <11> <num>
07041    *
07042    * W num      Number of sound files that follow */
07043 
07044   _cur.skip_sprites = buf->ReadWord();
07045 
07046   grfmsg(3, "SkipAct11: Skipping %d sprites", _cur.skip_sprites);
07047 }
07048 
07050 static void LoadFontGlyph(ByteReader *buf)
07051 {
07052   /* <12> <num_def> <font_size> <num_char> <base_char>
07053    *
07054    * B num_def      Number of definitions
07055    * B font_size    Size of font (0 = normal, 1 = small, 2 = large, 3 = mono)
07056    * B num_char     Number of consecutive glyphs
07057    * W base_char    First character index */
07058 
07059   uint8 num_def = buf->ReadByte();
07060 
07061   for (uint i = 0; i < num_def; i++) {
07062     FontSize size    = (FontSize)buf->ReadByte();
07063     uint8  num_char  = buf->ReadByte();
07064     uint16 base_char = buf->ReadWord();
07065 
07066     if (size >= FS_END) {
07067       grfmsg(1, "LoadFontGlyph: Size %u is not supported, ignoring", size);
07068     }
07069 
07070     grfmsg(7, "LoadFontGlyph: Loading %u glyph(s) at 0x%04X for size %u", num_char, base_char, size);
07071 
07072     for (uint c = 0; c < num_char; c++) {
07073       if (size < FS_END) SetUnicodeGlyph(size, base_char + c, _cur.spriteid);
07074       _cur.nfo_line++;
07075       LoadNextSprite(_cur.spriteid++, _cur.file_index, _cur.nfo_line, _cur.grf_container_ver);
07076     }
07077   }
07078 }
07079 
07081 static void SkipAct12(ByteReader *buf)
07082 {
07083   /* <12> <num_def> <font_size> <num_char> <base_char>
07084    *
07085    * B num_def      Number of definitions
07086    * B font_size    Size of font (0 = normal, 1 = small, 2 = large)
07087    * B num_char     Number of consecutive glyphs
07088    * W base_char    First character index */
07089 
07090   uint8 num_def = buf->ReadByte();
07091 
07092   for (uint i = 0; i < num_def; i++) {
07093     /* Ignore 'size' byte */
07094     buf->ReadByte();
07095 
07096     /* Sum up number of characters */
07097     _cur.skip_sprites += buf->ReadByte();
07098 
07099     /* Ignore 'base_char' word */
07100     buf->ReadWord();
07101   }
07102 
07103   grfmsg(3, "SkipAct12: Skipping %d sprites", _cur.skip_sprites);
07104 }
07105 
07107 static void TranslateGRFStrings(ByteReader *buf)
07108 {
07109   /* <13> <grfid> <num-ent> <offset> <text...>
07110    *
07111    * 4*B grfid     The GRFID of the file whose texts are to be translated
07112    * B   num-ent   Number of strings
07113    * W   offset    First text ID
07114    * S   text...   Zero-terminated strings */
07115 
07116   uint32 grfid = buf->ReadDWord();
07117   const GRFConfig *c = GetGRFConfig(grfid);
07118   if (c == NULL || (c->status != GCS_INITIALISED && c->status != GCS_ACTIVATED)) {
07119     grfmsg(7, "TranslateGRFStrings: GRFID 0x%08x unknown, skipping action 13", BSWAP32(grfid));
07120     return;
07121   }
07122 
07123   if (c->status == GCS_INITIALISED) {
07124     /* If the file is not active but will be activated later, give an error
07125      * and disable this file. */
07126     GRFError *error = DisableGrf(STR_NEWGRF_ERROR_LOAD_AFTER);
07127 
07128     char tmp[256];
07129     GetString(tmp, STR_NEWGRF_ERROR_AFTER_TRANSLATED_FILE, lastof(tmp));
07130     error->data = strdup(tmp);
07131 
07132     return;
07133   }
07134 
07135   /* Since no language id is supplied for with version 7 and lower NewGRFs, this string has
07136    * to be added as a generic string, thus the language id of 0x7F. For this to work
07137    * new_scheme has to be true as well, which will also be implicitly the case for version 8
07138    * and higher. A language id of 0x7F will be overridden by a non-generic id, so this will
07139    * not change anything if a string has been provided specifically for this language. */
07140   byte language = _cur.grffile->grf_version >= 8 ? buf->ReadByte() : 0x7F;
07141   byte num_strings = buf->ReadByte();
07142   uint16 first_id  = buf->ReadWord();
07143 
07144   if (!((first_id >= 0xD000 && first_id + num_strings <= 0xD3FF) || (first_id >= 0xDC00 && first_id + num_strings <= 0xDCFF))) {
07145     grfmsg(7, "TranslateGRFStrings: Attempting to set out-of-range string IDs in action 13 (first: 0x%4X, number: 0x%2X)", first_id, num_strings);
07146     return;
07147   }
07148 
07149   for (uint i = 0; i < num_strings && buf->HasData(); i++) {
07150     const char *string = buf->ReadString();
07151 
07152     if (StrEmpty(string)) {
07153       grfmsg(7, "TranslateGRFString: Ignoring empty string.");
07154       continue;
07155     }
07156 
07157     AddGRFString(grfid, first_id + i, language, true, true, string, STR_UNDEFINED);
07158   }
07159 }
07160 
07162 static bool ChangeGRFName(byte langid, const char *str)
07163 {
07164   AddGRFTextToList(&_cur.grfconfig->name->text, langid, _cur.grfconfig->ident.grfid, false, str);
07165   return true;
07166 }
07167 
07169 static bool ChangeGRFDescription(byte langid, const char *str)
07170 {
07171   AddGRFTextToList(&_cur.grfconfig->info->text, langid, _cur.grfconfig->ident.grfid, true, str);
07172   return true;
07173 }
07174 
07176 static bool ChangeGRFURL(byte langid, const char *str)
07177 {
07178   AddGRFTextToList(&_cur.grfconfig->url->text, langid, _cur.grfconfig->ident.grfid, false, str);
07179   return true;
07180 }
07181 
07183 static bool ChangeGRFNumUsedParams(size_t len, ByteReader *buf)
07184 {
07185   if (len != 1) {
07186     grfmsg(2, "StaticGRFInfo: expected only 1 byte for 'INFO'->'NPAR' but got " PRINTF_SIZE ", ignoring this field", len);
07187     buf->Skip(len);
07188   } else {
07189     _cur.grfconfig->num_valid_params = min(buf->ReadByte(), lengthof(_cur.grfconfig->param));
07190   }
07191   return true;
07192 }
07193 
07195 static bool ChangeGRFPalette(size_t len, ByteReader *buf)
07196 {
07197   if (len != 1) {
07198     grfmsg(2, "StaticGRFInfo: expected only 1 byte for 'INFO'->'PALS' but got " PRINTF_SIZE ", ignoring this field", len);
07199     buf->Skip(len);
07200   } else {
07201     char data = buf->ReadByte();
07202     GRFPalette pal = GRFP_GRF_UNSET;
07203     switch (data) {
07204       case '*':
07205       case 'A': pal = GRFP_GRF_ANY;     break;
07206       case 'W': pal = GRFP_GRF_WINDOWS; break;
07207       case 'D': pal = GRFP_GRF_DOS;     break;
07208       default:
07209         grfmsg(2, "StaticGRFInfo: unexpected value '%02x' for 'INFO'->'PALS', ignoring this field", data);
07210         break;
07211     }
07212     if (pal != GRFP_GRF_UNSET) {
07213       _cur.grfconfig->palette &= ~GRFP_GRF_MASK;
07214       _cur.grfconfig->palette |= pal;
07215     }
07216   }
07217   return true;
07218 }
07219 
07221 static bool ChangeGRFBlitter(size_t len, ByteReader *buf)
07222 {
07223   if (len != 1) {
07224     grfmsg(2, "StaticGRFInfo: expected only 1 byte for 'INFO'->'BLTR' but got " PRINTF_SIZE ", ignoring this field", len);
07225     buf->Skip(len);
07226   } else {
07227     char data = buf->ReadByte();
07228     GRFPalette pal = GRFP_BLT_UNSET;
07229     switch (data) {
07230       case '8': pal = GRFP_BLT_UNSET; break;
07231       case '3': pal = GRFP_BLT_32BPP;  break;
07232       default:
07233         grfmsg(2, "StaticGRFInfo: unexpected value '%02x' for 'INFO'->'BLTR', ignoring this field", data);
07234         return true;
07235     }
07236     _cur.grfconfig->palette &= ~GRFP_BLT_MASK;
07237     _cur.grfconfig->palette |= pal;
07238   }
07239   return true;
07240 }
07241 
07243 static bool ChangeGRFVersion(size_t len, ByteReader *buf)
07244 {
07245   if (len != 4) {
07246     grfmsg(2, "StaticGRFInfo: expected 4 bytes for 'INFO'->'VRSN' but got " PRINTF_SIZE ", ignoring this field", len);
07247     buf->Skip(len);
07248   } else {
07249     /* Set min_loadable_version as well (default to minimal compatibility) */
07250     _cur.grfconfig->version = _cur.grfconfig->min_loadable_version = buf->ReadDWord();
07251   }
07252   return true;
07253 }
07254 
07256 static bool ChangeGRFMinVersion(size_t len, ByteReader *buf)
07257 {
07258   if (len != 4) {
07259     grfmsg(2, "StaticGRFInfo: expected 4 bytes for 'INFO'->'MINV' but got " PRINTF_SIZE ", ignoring this field", len);
07260     buf->Skip(len);
07261   } else {
07262     _cur.grfconfig->min_loadable_version = buf->ReadDWord();
07263     if (_cur.grfconfig->version == 0) {
07264       grfmsg(2, "StaticGRFInfo: 'MINV' defined before 'VRSN' or 'VRSN' set to 0, ignoring this field");
07265       _cur.grfconfig->min_loadable_version = 0;
07266     }
07267     if (_cur.grfconfig->version < _cur.grfconfig->min_loadable_version) {
07268       grfmsg(2, "StaticGRFInfo: 'MINV' defined as %d, limiting it to 'VRSN'", _cur.grfconfig->min_loadable_version);
07269       _cur.grfconfig->min_loadable_version = _cur.grfconfig->version;
07270     }
07271   }
07272   return true;
07273 }
07274 
07275 static GRFParameterInfo *_cur_parameter; 
07276 
07278 static bool ChangeGRFParamName(byte langid, const char *str)
07279 {
07280   AddGRFTextToList(&_cur_parameter->name, langid, _cur.grfconfig->ident.grfid, false, str);
07281   return true;
07282 }
07283 
07285 static bool ChangeGRFParamDescription(byte langid, const char *str)
07286 {
07287   AddGRFTextToList(&_cur_parameter->desc, langid, _cur.grfconfig->ident.grfid, true, str);
07288   return true;
07289 }
07290 
07292 static bool ChangeGRFParamType(size_t len, ByteReader *buf)
07293 {
07294   if (len != 1) {
07295     grfmsg(2, "StaticGRFInfo: expected 1 byte for 'INFO'->'PARA'->'TYPE' but got " PRINTF_SIZE ", ignoring this field", len);
07296     buf->Skip(len);
07297   } else {
07298     GRFParameterType type = (GRFParameterType)buf->ReadByte();
07299     if (type < PTYPE_END) {
07300       _cur_parameter->type = type;
07301     } else {
07302       grfmsg(3, "StaticGRFInfo: unknown parameter type %d, ignoring this field", type);
07303     }
07304   }
07305   return true;
07306 }
07307 
07309 static bool ChangeGRFParamLimits(size_t len, ByteReader *buf)
07310 {
07311   if (_cur_parameter->type != PTYPE_UINT_ENUM) {
07312     grfmsg(2, "StaticGRFInfo: 'INFO'->'PARA'->'LIMI' is only valid for parameters with type uint/enum, ignoring this field");
07313     buf->Skip(len);
07314   } else if (len != 8) {
07315     grfmsg(2, "StaticGRFInfo: expected 8 bytes for 'INFO'->'PARA'->'LIMI' but got " PRINTF_SIZE ", ignoring this field", len);
07316     buf->Skip(len);
07317   } else {
07318     _cur_parameter->min_value = buf->ReadDWord();
07319     _cur_parameter->max_value = buf->ReadDWord();
07320   }
07321   return true;
07322 }
07323 
07325 static bool ChangeGRFParamMask(size_t len, ByteReader *buf)
07326 {
07327   if (len < 1 || len > 3) {
07328     grfmsg(2, "StaticGRFInfo: expected 1 to 3 bytes for 'INFO'->'PARA'->'MASK' but got " PRINTF_SIZE ", ignoring this field", len);
07329     buf->Skip(len);
07330   } else {
07331     byte param_nr = buf->ReadByte();
07332     if (param_nr >= lengthof(_cur.grfconfig->param)) {
07333       grfmsg(2, "StaticGRFInfo: invalid parameter number in 'INFO'->'PARA'->'MASK', param %d, ignoring this field", param_nr);
07334       buf->Skip(len - 1);
07335     } else {
07336       _cur_parameter->param_nr = param_nr;
07337       if (len >= 2) _cur_parameter->first_bit = min(buf->ReadByte(), 31);
07338       if (len >= 3) _cur_parameter->num_bit = min(buf->ReadByte(), 32 - _cur_parameter->first_bit);
07339     }
07340   }
07341 
07342   return true;
07343 }
07344 
07346 static bool ChangeGRFParamDefault(size_t len, ByteReader *buf)
07347 {
07348   if (len != 4) {
07349     grfmsg(2, "StaticGRFInfo: expected 4 bytes for 'INFO'->'PARA'->'DEFA' but got " PRINTF_SIZE ", ignoring this field", len);
07350     buf->Skip(len);
07351   } else {
07352     _cur_parameter->def_value = buf->ReadDWord();
07353   }
07354   _cur.grfconfig->has_param_defaults = true;
07355   return true;
07356 }
07357 
07358 typedef bool (*DataHandler)(size_t, ByteReader *);  
07359 typedef bool (*TextHandler)(byte, const char *str); 
07360 typedef bool (*BranchHandler)(ByteReader *);        
07361 
07369 struct AllowedSubtags {
07371   AllowedSubtags() :
07372     id(0),
07373     type(0)
07374   {}
07375 
07381   AllowedSubtags(uint32 id, DataHandler handler) :
07382     id(id),
07383     type('B')
07384   {
07385     this->handler.data = handler;
07386   }
07387 
07393   AllowedSubtags(uint32 id, TextHandler handler) :
07394     id(id),
07395     type('T')
07396   {
07397     this->handler.text = handler;
07398   }
07399 
07405   AllowedSubtags(uint32 id, BranchHandler handler) :
07406     id(id),
07407     type('C')
07408   {
07409     this->handler.call_handler = true;
07410     this->handler.u.branch = handler;
07411   }
07412 
07418   AllowedSubtags(uint32 id, AllowedSubtags *subtags) :
07419     id(id),
07420     type('C')
07421   {
07422     this->handler.call_handler = false;
07423     this->handler.u.subtags = subtags;
07424   }
07425 
07426   uint32 id; 
07427   byte type; 
07428   union {
07429     DataHandler data; 
07430     TextHandler text; 
07431     struct {
07432       union {
07433         BranchHandler branch;    
07434         AllowedSubtags *subtags; 
07435       } u;
07436       bool call_handler; 
07437     };
07438   } handler;
07439 };
07440 
07441 static bool SkipUnknownInfo(ByteReader *buf, byte type);
07442 static bool HandleNodes(ByteReader *buf, AllowedSubtags *tags);
07443 
07450 static bool ChangeGRFParamValueNames(ByteReader *buf)
07451 {
07452   byte type = buf->ReadByte();
07453   while (type != 0) {
07454     uint32 id = buf->ReadDWord();
07455     if (type != 'T' || id > _cur_parameter->max_value) {
07456       grfmsg(2, "StaticGRFInfo: all child nodes of 'INFO'->'PARA'->param_num->'VALU' should have type 't' and the value/bit number as id");
07457       if (!SkipUnknownInfo(buf, type)) return false;
07458       type = buf->ReadByte();
07459       continue;
07460     }
07461 
07462     byte langid = buf->ReadByte();
07463     const char *name_string = buf->ReadString();
07464 
07465     SmallPair<uint32, GRFText *> *val_name = _cur_parameter->value_names.Find(id);
07466     if (val_name != _cur_parameter->value_names.End()) {
07467       AddGRFTextToList(&val_name->second, langid, _cur.grfconfig->ident.grfid, false, name_string);
07468     } else {
07469       GRFText *list = NULL;
07470       AddGRFTextToList(&list, langid, _cur.grfconfig->ident.grfid, false, name_string);
07471       _cur_parameter->value_names.Insert(id, list);
07472     }
07473 
07474     type = buf->ReadByte();
07475   }
07476   return true;
07477 }
07478 
07480 AllowedSubtags _tags_parameters[] = {
07481   AllowedSubtags('NAME', ChangeGRFParamName),
07482   AllowedSubtags('DESC', ChangeGRFParamDescription),
07483   AllowedSubtags('TYPE', ChangeGRFParamType),
07484   AllowedSubtags('LIMI', ChangeGRFParamLimits),
07485   AllowedSubtags('MASK', ChangeGRFParamMask),
07486   AllowedSubtags('VALU', ChangeGRFParamValueNames),
07487   AllowedSubtags('DFLT', ChangeGRFParamDefault),
07488   AllowedSubtags()
07489 };
07490 
07497 static bool HandleParameterInfo(ByteReader *buf)
07498 {
07499   byte type = buf->ReadByte();
07500   while (type != 0) {
07501     uint32 id = buf->ReadDWord();
07502     if (type != 'C' || id >= _cur.grfconfig->num_valid_params) {
07503       grfmsg(2, "StaticGRFInfo: all child nodes of 'INFO'->'PARA' should have type 'C' and their parameter number as id");
07504       if (!SkipUnknownInfo(buf, type)) return false;
07505       type = buf->ReadByte();
07506       continue;
07507     }
07508 
07509     if (id >= _cur.grfconfig->param_info.Length()) {
07510       uint num_to_add = id - _cur.grfconfig->param_info.Length() + 1;
07511       GRFParameterInfo **newdata = _cur.grfconfig->param_info.Append(num_to_add);
07512       MemSetT<GRFParameterInfo *>(newdata, 0, num_to_add);
07513     }
07514     if (_cur.grfconfig->param_info[id] == NULL) {
07515       _cur.grfconfig->param_info[id] = new GRFParameterInfo(id);
07516     }
07517     _cur_parameter = _cur.grfconfig->param_info[id];
07518     /* Read all parameter-data and process each node. */
07519     if (!HandleNodes(buf, _tags_parameters)) return false;
07520     type = buf->ReadByte();
07521   }
07522   return true;
07523 }
07524 
07526 AllowedSubtags _tags_info[] = {
07527   AllowedSubtags('NAME', ChangeGRFName),
07528   AllowedSubtags('DESC', ChangeGRFDescription),
07529   AllowedSubtags('URL_', ChangeGRFURL),
07530   AllowedSubtags('NPAR', ChangeGRFNumUsedParams),
07531   AllowedSubtags('PALS', ChangeGRFPalette),
07532   AllowedSubtags('BLTR', ChangeGRFBlitter),
07533   AllowedSubtags('VRSN', ChangeGRFVersion),
07534   AllowedSubtags('MINV', ChangeGRFMinVersion),
07535   AllowedSubtags('PARA', HandleParameterInfo),
07536   AllowedSubtags()
07537 };
07538 
07540 AllowedSubtags _tags_root[] = {
07541   AllowedSubtags('INFO', _tags_info),
07542   AllowedSubtags()
07543 };
07544 
07545 
07552 static bool SkipUnknownInfo(ByteReader *buf, byte type)
07553 {
07554   /* type and id are already read */
07555   switch (type) {
07556     case 'C': {
07557       byte new_type = buf->ReadByte();
07558       while (new_type != 0) {
07559         buf->ReadDWord(); // skip the id
07560         if (!SkipUnknownInfo(buf, new_type)) return false;
07561         new_type = buf->ReadByte();
07562       }
07563       break;
07564     }
07565 
07566     case 'T':
07567       buf->ReadByte(); // lang
07568       buf->ReadString(); // actual text
07569       break;
07570 
07571     case 'B': {
07572       uint16 size = buf->ReadWord();
07573       buf->Skip(size);
07574       break;
07575     }
07576 
07577     default:
07578       return false;
07579   }
07580 
07581   return true;
07582 }
07583 
07592 static bool HandleNode(byte type, uint32 id, ByteReader *buf, AllowedSubtags subtags[])
07593 {
07594   uint i = 0;
07595   AllowedSubtags *tag;
07596   while ((tag = &subtags[i++])->type != 0) {
07597     if (tag->id != BSWAP32(id) || tag->type != type) continue;
07598     switch (type) {
07599       default: NOT_REACHED();
07600 
07601       case 'T': {
07602         byte langid = buf->ReadByte();
07603         return tag->handler.text(langid, buf->ReadString());
07604       }
07605 
07606       case 'B': {
07607         size_t len = buf->ReadWord();
07608         if (buf->Remaining() < len) return false;
07609         return tag->handler.data(len, buf);
07610       }
07611 
07612       case 'C': {
07613         if (tag->handler.call_handler) {
07614           return tag->handler.u.branch(buf);
07615         }
07616         return HandleNodes(buf, tag->handler.u.subtags);
07617       }
07618     }
07619   }
07620   grfmsg(2, "StaticGRFInfo: unknown type/id combination found, type=%c, id=%x", type, id);
07621   return SkipUnknownInfo(buf, type);
07622 }
07623 
07630 static bool HandleNodes(ByteReader *buf, AllowedSubtags subtags[])
07631 {
07632   byte type = buf->ReadByte();
07633   while (type != 0) {
07634     uint32 id = buf->ReadDWord();
07635     if (!HandleNode(type, id, buf, subtags)) return false;
07636     type = buf->ReadByte();
07637   }
07638   return true;
07639 }
07640 
07645 static void StaticGRFInfo(ByteReader *buf)
07646 {
07647   /* <14> <type> <id> <text/data...> */
07648   HandleNodes(buf, _tags_root);
07649 }
07650 
07656 static void GRFUnsafe(ByteReader *buf)
07657 {
07658   SetBit(_cur.grfconfig->flags, GCF_UNSAFE);
07659 
07660   /* Skip remainder of GRF */
07661   _cur.skip_sprites = -1;
07662 }
07663 
07664 
07666 static void InitializeGRFSpecial()
07667 {
07668   _ttdpatch_flags[0] = ((_settings_game.station.never_expire_airports ? 1 : 0) << 0x0C)  // keepsmallairport
07669                      |                                                      (1 << 0x0D)  // newairports
07670                      |                                                      (1 << 0x0E)  // largestations
07671                      | ((_settings_game.construction.max_bridge_length > 16 ? 1 : 0) << 0x0F)  // longbridges
07672                      |                                                      (0 << 0x10)  // loadtime
07673                      |                                                      (1 << 0x12)  // presignals
07674                      |                                                      (1 << 0x13)  // extpresignals
07675                      | ((_settings_game.vehicle.never_expire_vehicles ? 1 : 0) << 0x16)  // enginespersist
07676                      |                                                      (1 << 0x1B)  // multihead
07677                      |                                                      (1 << 0x1D)  // lowmemory
07678                      |                                                      (1 << 0x1E); // generalfixes
07679 
07680   _ttdpatch_flags[1] =   ((_settings_game.economy.station_noise_level ? 1 : 0) << 0x07)  // moreairports - based on units of noise
07681                      |                                                      (1 << 0x08)  // mammothtrains
07682                      |                                                      (1 << 0x09)  // trainrefit
07683                      |                                                      (0 << 0x0B)  // subsidiaries
07684                      |         ((_settings_game.order.gradual_loading ? 1 : 0) << 0x0C)  // gradualloading
07685                      |                                                      (1 << 0x12)  // unifiedmaglevmode - set bit 0 mode. Not revelant to OTTD
07686                      |                                                      (1 << 0x13)  // unifiedmaglevmode - set bit 1 mode
07687                      |                                                      (1 << 0x14)  // bridgespeedlimits
07688                      |                                                      (1 << 0x16)  // eternalgame
07689                      |                                                      (1 << 0x17)  // newtrains
07690                      |                                                      (1 << 0x18)  // newrvs
07691                      |                                                      (1 << 0x19)  // newships
07692                      |                                                      (1 << 0x1A)  // newplanes
07693                      | ((_settings_game.construction.train_signal_side == 1 ? 1 : 0) << 0x1B)  // signalsontrafficside
07694                      |       ((_settings_game.vehicle.disable_elrails ? 0 : 1) << 0x1C); // electrifiedrailway
07695 
07696   _ttdpatch_flags[2] =                                                      (1 << 0x01)  // loadallgraphics - obsolote
07697                      |                                                      (1 << 0x03)  // semaphores
07698                      |                                                      (1 << 0x0A)  // newobjects
07699                      |                                                      (0 << 0x0B)  // enhancedgui
07700                      |                                                      (0 << 0x0C)  // newagerating
07701                      |  ((_settings_game.construction.build_on_slopes ? 1 : 0) << 0x0D)  // buildonslopes
07702                      |                                                      (1 << 0x0E)  // fullloadany
07703                      |                                                      (1 << 0x0F)  // planespeed
07704                      |                                                      (0 << 0x10)  // moreindustriesperclimate - obsolete
07705                      |                                                      (0 << 0x11)  // moretoylandfeatures
07706                      |                                                      (1 << 0x12)  // newstations
07707                      |                                                      (1 << 0x13)  // tracktypecostdiff
07708                      |                                                      (1 << 0x14)  // manualconvert
07709                      |  ((_settings_game.construction.build_on_slopes ? 1 : 0) << 0x15)  // buildoncoasts
07710                      |                                                      (1 << 0x16)  // canals
07711                      |                                                      (1 << 0x17)  // newstartyear
07712                      |    ((_settings_game.vehicle.freight_trains > 1 ? 1 : 0) << 0x18)  // freighttrains
07713                      |                                                      (1 << 0x19)  // newhouses
07714                      |                                                      (1 << 0x1A)  // newbridges
07715                      |                                                      (1 << 0x1B)  // newtownnames
07716                      |                                                      (1 << 0x1C)  // moreanimation
07717                      |    ((_settings_game.vehicle.wagon_speed_limits ? 1 : 0) << 0x1D)  // wagonspeedlimits
07718                      |                                                      (1 << 0x1E)  // newshistory
07719                      |                                                      (0 << 0x1F); // custombridgeheads
07720 
07721   _ttdpatch_flags[3] =                                                      (0 << 0x00)  // newcargodistribution
07722                      |                                                      (1 << 0x01)  // windowsnap
07723                      | ((_settings_game.economy.allow_town_roads || _generating_world ? 0 : 1) << 0x02)  // townbuildnoroad
07724                      |                                                      (1 << 0x03)  // pathbasedsignalling
07725                      |                                                      (0 << 0x04)  // aichoosechance
07726                      |                                                      (1 << 0x05)  // resolutionwidth
07727                      |                                                      (1 << 0x06)  // resolutionheight
07728                      |                                                      (1 << 0x07)  // newindustries
07729                      |           ((_settings_game.order.improved_load ? 1 : 0) << 0x08)  // fifoloading
07730                      |                                                      (0 << 0x09)  // townroadbranchprob
07731                      |                                                      (0 << 0x0A)  // tempsnowline
07732                      |                                                      (1 << 0x0B)  // newcargo
07733                      |                                                      (1 << 0x0C)  // enhancemultiplayer
07734                      |                                                      (1 << 0x0D)  // onewayroads
07735                      |                                                      (1 << 0x0E)  // irregularstations
07736                      |                                                      (1 << 0x0F)  // statistics
07737                      |                                                      (1 << 0x10)  // newsounds
07738                      |                                                      (1 << 0x11)  // autoreplace
07739                      |                                                      (1 << 0x12)  // autoslope
07740                      |                                                      (0 << 0x13)  // followvehicle
07741                      |                                                      (1 << 0x14)  // trams
07742                      |                                                      (0 << 0x15)  // enhancetunnels
07743                      |                                                      (1 << 0x16)  // shortrvs
07744                      |                                                      (1 << 0x17)  // articulatedrvs
07745                      |       ((_settings_game.vehicle.dynamic_engines ? 1 : 0) << 0x18)  // dynamic engines
07746                      |                                                      (1 << 0x1E)  // variablerunningcosts
07747                      |                                                      (1 << 0x1F); // any switch is on
07748 }
07749 
07751 static void ResetCustomStations()
07752 {
07753   const GRFFile * const *end = _grf_files.End();
07754   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
07755     StationSpec **&stations = (*file)->stations;
07756     if (stations == NULL) continue;
07757     for (uint i = 0; i < MAX_STATIONS; i++) {
07758       if (stations[i] == NULL) continue;
07759       StationSpec *statspec = stations[i];
07760 
07761       delete[] statspec->renderdata;
07762 
07763       /* Release platforms and layouts */
07764       if (!statspec->copied_layouts) {
07765         for (uint l = 0; l < statspec->lengths; l++) {
07766           for (uint p = 0; p < statspec->platforms[l]; p++) {
07767             free(statspec->layouts[l][p]);
07768           }
07769           free(statspec->layouts[l]);
07770         }
07771         free(statspec->layouts);
07772         free(statspec->platforms);
07773       }
07774 
07775       /* Release this station */
07776       free(statspec);
07777     }
07778 
07779     /* Free and reset the station data */
07780     free(stations);
07781     stations = NULL;
07782   }
07783 }
07784 
07786 static void ResetCustomHouses()
07787 {
07788   const GRFFile * const *end = _grf_files.End();
07789   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
07790     HouseSpec **&housespec = (*file)->housespec;
07791     if (housespec == NULL) continue;
07792     for (uint i = 0; i < HOUSE_MAX; i++) {
07793       free(housespec[i]);
07794     }
07795 
07796     free(housespec);
07797     housespec = NULL;
07798   }
07799 }
07800 
07802 static void ResetCustomAirports()
07803 {
07804   const GRFFile * const *end = _grf_files.End();
07805   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
07806     AirportSpec **aslist = (*file)->airportspec;
07807     if (aslist != NULL) {
07808       for (uint i = 0; i < NUM_AIRPORTS; i++) {
07809         AirportSpec *as = aslist[i];
07810 
07811         if (as != NULL) {
07812           /* We need to remove the tiles layouts */
07813           for (int j = 0; j < as->num_table; j++) {
07814             /* remove the individual layouts */
07815             free(as->table[j]);
07816           }
07817           free(as->table);
07818           free(as->depot_table);
07819 
07820           free(as);
07821         }
07822       }
07823       free(aslist);
07824       (*file)->airportspec = NULL;
07825     }
07826 
07827     AirportTileSpec **&airporttilespec = (*file)->airtspec;
07828     if (airporttilespec != NULL) {
07829       for (uint i = 0; i < NUM_AIRPORTTILES; i++) {
07830         free(airporttilespec[i]);
07831       }
07832       free(airporttilespec);
07833       airporttilespec = NULL;
07834     }
07835   }
07836 }
07837 
07839 static void ResetCustomIndustries()
07840 {
07841   const GRFFile * const *end = _grf_files.End();
07842   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
07843     IndustrySpec **&industryspec = (*file)->industryspec;
07844     IndustryTileSpec **&indtspec = (*file)->indtspec;
07845 
07846     /* We are verifiying both tiles and industries specs loaded from the grf file
07847      * First, let's deal with industryspec */
07848     if (industryspec != NULL) {
07849       for (uint i = 0; i < NUM_INDUSTRYTYPES; i++) {
07850         IndustrySpec *ind = industryspec[i];
07851         if (ind == NULL) continue;
07852 
07853         /* We need to remove the sounds array */
07854         if (HasBit(ind->cleanup_flag, CLEAN_RANDOMSOUNDS)) {
07855           free(ind->random_sounds);
07856         }
07857 
07858         /* We need to remove the tiles layouts */
07859         CleanIndustryTileTable(ind);
07860 
07861         free(ind);
07862       }
07863 
07864       free(industryspec);
07865       industryspec = NULL;
07866     }
07867 
07868     if (indtspec == NULL) continue;
07869     for (uint i = 0; i < NUM_INDUSTRYTILES; i++) {
07870       free(indtspec[i]);
07871     }
07872 
07873     free(indtspec);
07874     indtspec = NULL;
07875   }
07876 }
07877 
07879 static void ResetCustomObjects()
07880 {
07881   const GRFFile * const *end = _grf_files.End();
07882   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
07883     ObjectSpec **&objectspec = (*file)->objectspec;
07884     if (objectspec == NULL) continue;
07885     for (uint i = 0; i < NUM_OBJECTS; i++) {
07886       free(objectspec[i]);
07887     }
07888 
07889     free(objectspec);
07890     objectspec = NULL;
07891   }
07892 }
07893 
07895 static void ResetNewGRF()
07896 {
07897   const GRFFile * const *end = _grf_files.End();
07898   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
07899     delete *file;
07900   }
07901 
07902   _grf_files.Clear();
07903   _cur.grffile   = NULL;
07904 }
07905 
07907 static void ResetNewGRFErrors()
07908 {
07909   for (GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
07910     if (!HasBit(c->flags, GCF_COPY) && c->error != NULL) {
07911       delete c->error;
07912       c->error = NULL;
07913     }
07914   }
07915 }
07916 
07921 void ResetNewGRFData()
07922 {
07923   CleanUpStrings();
07924   CleanUpGRFTownNames();
07925 
07926   /* Copy/reset original engine info data */
07927   SetupEngines();
07928 
07929   /* Copy/reset original bridge info data */
07930   ResetBridges();
07931 
07932   /* Reset rail type information */
07933   ResetRailTypes();
07934 
07935   /* Allocate temporary refit/cargo class data */
07936   _gted = CallocT<GRFTempEngineData>(Engine::GetPoolSize());
07937 
07938   /* Fill rail type label temporary data for default trains */
07939   Engine *e;
07940   FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) {
07941     _gted[e->index].railtypelabel = GetRailTypeInfo(e->u.rail.railtype)->label;
07942   }
07943 
07944   /* Reset GRM reservations */
07945   memset(&_grm_engines, 0, sizeof(_grm_engines));
07946   memset(&_grm_cargoes, 0, sizeof(_grm_cargoes));
07947 
07948   /* Reset generic feature callback lists */
07949   ResetGenericCallbacks();
07950 
07951   /* Reset price base data */
07952   ResetPriceBaseMultipliers();
07953 
07954   /* Reset the curencies array */
07955   ResetCurrencies();
07956 
07957   /* Reset the house array */
07958   ResetCustomHouses();
07959   ResetHouses();
07960 
07961   /* Reset the industries structures*/
07962   ResetCustomIndustries();
07963   ResetIndustries();
07964 
07965   /* Reset the objects. */
07966   ObjectClass::Reset();
07967   ResetCustomObjects();
07968   ResetObjects();
07969 
07970   /* Reset station classes */
07971   StationClass::Reset();
07972   ResetCustomStations();
07973 
07974   /* Reset airport-related structures */
07975   AirportClass::Reset();
07976   ResetCustomAirports();
07977   AirportSpec::ResetAirports();
07978   AirportTileSpec::ResetAirportTiles();
07979 
07980   /* Reset canal sprite groups and flags */
07981   memset(_water_feature, 0, sizeof(_water_feature));
07982 
07983   /* Reset the snowline table. */
07984   ClearSnowLine();
07985 
07986   /* Reset NewGRF files */
07987   ResetNewGRF();
07988 
07989   /* Reset NewGRF errors. */
07990   ResetNewGRFErrors();
07991 
07992   /* Set up the default cargo types */
07993   SetupCargoForClimate(_settings_game.game_creation.landscape);
07994 
07995   /* Reset misc GRF features and train list display variables */
07996   _misc_grf_features = 0;
07997 
07998   _loaded_newgrf_features.has_2CC           = false;
07999   _loaded_newgrf_features.used_liveries     = 1 << LS_DEFAULT;
08000   _loaded_newgrf_features.has_newhouses     = false;
08001   _loaded_newgrf_features.has_newindustries = false;
08002   _loaded_newgrf_features.shore             = SHORE_REPLACE_NONE;
08003 
08004   /* Clear all GRF overrides */
08005   _grf_id_overrides.clear();
08006 
08007   InitializeSoundPool();
08008   _spritegroup_pool.CleanPool();
08009 }
08010 
08014 void ResetPersistentNewGRFData()
08015 {
08016   /* Reset override managers */
08017   _engine_mngr.ResetToDefaultMapping();
08018   _house_mngr.ResetMapping();
08019   _industry_mngr.ResetMapping();
08020   _industile_mngr.ResetMapping();
08021   _airport_mngr.ResetMapping();
08022   _airporttile_mngr.ResetMapping();
08023 }
08024 
08029 static void BuildCargoTranslationMap()
08030 {
08031   memset(_cur.grffile->cargo_map, 0xFF, sizeof(_cur.grffile->cargo_map));
08032 
08033   for (CargoID c = 0; c < NUM_CARGO; c++) {
08034     const CargoSpec *cs = CargoSpec::Get(c);
08035     if (!cs->IsValid()) continue;
08036 
08037     if (_cur.grffile->cargo_list.Length() == 0) {
08038       /* Default translation table, so just a straight mapping to bitnum */
08039       _cur.grffile->cargo_map[c] = cs->bitnum;
08040     } else {
08041       /* Check the translation table for this cargo's label */
08042       int index = _cur.grffile->cargo_list.FindIndex(cs->label);
08043       if (index >= 0) _cur.grffile->cargo_map[c] = index;
08044     }
08045   }
08046 }
08047 
08052 static void InitNewGRFFile(const GRFConfig *config)
08053 {
08054   GRFFile *newfile = GetFileByFilename(config->filename);
08055   if (newfile != NULL) {
08056     /* We already loaded it once. */
08057     _cur.grffile = newfile;
08058     return;
08059   }
08060 
08061   newfile = new GRFFile(config);
08062   *_grf_files.Append() = _cur.grffile = newfile;
08063 }
08064 
08069 GRFFile::GRFFile(const GRFConfig *config)
08070 {
08071   this->filename = strdup(config->filename);
08072   this->grfid = config->ident.grfid;
08073 
08074   /* Initialise local settings to defaults */
08075   this->traininfo_vehicle_pitch = 0;
08076   this->traininfo_vehicle_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
08077 
08078   /* Mark price_base_multipliers as 'not set' */
08079   for (Price i = PR_BEGIN; i < PR_END; i++) {
08080     this->price_base_multipliers[i] = INVALID_PRICE_MODIFIER;
08081   }
08082 
08083   /* Initialise rail type map with default rail types */
08084   memset(this->railtype_map, INVALID_RAILTYPE, sizeof(this->railtype_map));
08085   this->railtype_map[0] = RAILTYPE_RAIL;
08086   this->railtype_map[1] = RAILTYPE_ELECTRIC;
08087   this->railtype_map[2] = RAILTYPE_MONO;
08088   this->railtype_map[3] = RAILTYPE_MAGLEV;
08089 
08090   /* Copy the initial parameter list
08091    * 'Uninitialised' parameters are zeroed as that is their default value when dynamically creating them. */
08092   assert_compile(lengthof(this->param) == lengthof(config->param) && lengthof(this->param) == 0x80);
08093 
08094   assert(config->num_params <= lengthof(config->param));
08095   this->param_end = config->num_params;
08096   if (this->param_end > 0) {
08097     MemCpyT(this->param, config->param, this->param_end);
08098   }
08099 }
08100 
08101 GRFFile::~GRFFile()
08102 {
08103   free(this->filename);
08104   delete[] this->language_map;
08105 }
08106 
08107 
08112 static const CargoLabel _default_refitmasks_rail[] = {
08113   'PASS', 'COAL', 'MAIL', 'LVST', 'GOOD', 'GRAI', 'WHEA', 'MAIZ', 'WOOD',
08114   'IORE', 'STEL', 'VALU', 'GOLD', 'DIAM', 'PAPR', 'FOOD', 'FRUT', 'CORE',
08115   'WATR', 'SUGR', 'TOYS', 'BATT', 'SWET', 'TOFF', 'COLA', 'CTCD', 'BUBL',
08116   'PLST', 'FZDR',
08117   0 };
08118 
08119 static const CargoLabel _default_refitmasks_road[] = {
08120   0 };
08121 
08122 static const CargoLabel _default_refitmasks_ships[] = {
08123   'COAL', 'MAIL', 'LVST', 'GOOD', 'GRAI', 'WHEA', 'MAIZ', 'WOOD', 'IORE',
08124   'STEL', 'VALU', 'GOLD', 'DIAM', 'PAPR', 'FOOD', 'FRUT', 'CORE', 'WATR',
08125   'RUBR', 'SUGR', 'TOYS', 'BATT', 'SWET', 'TOFF', 'COLA', 'CTCD', 'BUBL',
08126   'PLST', 'FZDR',
08127   0 };
08128 
08129 static const CargoLabel _default_refitmasks_aircraft[] = {
08130   'PASS', 'MAIL', 'GOOD', 'VALU', 'GOLD', 'DIAM', 'FOOD', 'FRUT', 'SUGR',
08131   'TOYS', 'BATT', 'SWET', 'TOFF', 'COLA', 'CTCD', 'BUBL', 'PLST', 'FZDR',
08132   0 };
08133 
08134 static const CargoLabel * const _default_refitmasks[] = {
08135   _default_refitmasks_rail,
08136   _default_refitmasks_road,
08137   _default_refitmasks_ships,
08138   _default_refitmasks_aircraft,
08139 };
08140 
08141 
08145 static void CalculateRefitMasks()
08146 {
08147   Engine *e;
08148 
08149   FOR_ALL_ENGINES(e) {
08150     EngineID engine = e->index;
08151     EngineInfo *ei = &e->info;
08152     bool only_defaultcargo; 
08153 
08154     /* Did the newgrf specify any refitting? If not, use defaults. */
08155     if (_gted[engine].refittability != GRFTempEngineData::UNSET) {
08156       uint32 mask = 0;
08157       uint32 not_mask = 0;
08158       uint32 xor_mask = ei->refit_mask;
08159 
08160       /* If the original masks set by the grf are zero, the vehicle shall only carry the default cargo.
08161        * Note: After applying the translations, the vehicle may end up carrying no defined cargo. It becomes unavailable in that case. */
08162       only_defaultcargo = _gted[engine].refittability == GRFTempEngineData::EMPTY;
08163 
08164       if (_gted[engine].cargo_allowed != 0) {
08165         /* Build up the list of cargo types from the set cargo classes. */
08166         const CargoSpec *cs;
08167         FOR_ALL_CARGOSPECS(cs) {
08168           if (_gted[engine].cargo_allowed    & cs->classes) SetBit(mask,     cs->Index());
08169           if (_gted[engine].cargo_disallowed & cs->classes) SetBit(not_mask, cs->Index());
08170         }
08171       }
08172 
08173       ei->refit_mask = ((mask & ~not_mask) ^ xor_mask) & _cargo_mask;
08174 
08175       /* Apply explicit refit includes/excludes. */
08176       ei->refit_mask |= _gted[engine].ctt_include_mask;
08177       ei->refit_mask &= ~_gted[engine].ctt_exclude_mask;
08178     } else {
08179       uint32 xor_mask = 0;
08180 
08181       /* Don't apply default refit mask to wagons nor engines with no capacity */
08182       if (e->type != VEH_TRAIN || (e->u.rail.capacity != 0 && e->u.rail.railveh_type != RAILVEH_WAGON)) {
08183         const CargoLabel *cl = _default_refitmasks[e->type];
08184         for (uint i = 0;; i++) {
08185           if (cl[i] == 0) break;
08186 
08187           CargoID cargo = GetCargoIDByLabel(cl[i]);
08188           if (cargo == CT_INVALID) continue;
08189 
08190           SetBit(xor_mask, cargo);
08191         }
08192       }
08193 
08194       ei->refit_mask = xor_mask & _cargo_mask;
08195 
08196       /* If the mask is zero, the vehicle shall only carry the default cargo */
08197       only_defaultcargo = (ei->refit_mask == 0);
08198     }
08199 
08200     /* Clear invalid cargoslots (from default vehicles or pre-NewCargo GRFs) */
08201     if (!HasBit(_cargo_mask, ei->cargo_type)) ei->cargo_type = CT_INVALID;
08202 
08203     /* Ensure that the vehicle is either not refittable, or that the default cargo is one of the refittable cargoes.
08204      * Note: Vehicles refittable to no cargo are handle differently to vehicle refittable to a single cargo. The latter might have subtypes. */
08205     if (!only_defaultcargo && (e->type != VEH_SHIP || e->u.ship.old_refittable) && ei->cargo_type != CT_INVALID && !HasBit(ei->refit_mask, ei->cargo_type)) {
08206       ei->cargo_type = CT_INVALID;
08207     }
08208 
08209     /* Check if this engine's cargo type is valid. If not, set to the first refittable
08210      * cargo type. Finally disable the vehicle, if there is still no cargo. */
08211     if (ei->cargo_type == CT_INVALID && ei->refit_mask != 0) {
08212       /* Figure out which CTT to use for the default cargo, if it is 'first refittable'. */
08213       const uint8 *cargo_map_for_first_refittable = NULL;
08214       {
08215         const GRFFile *file = _gted[engine].defaultcargo_grf;
08216         if (file == NULL) file = e->GetGRF();
08217         if (file != NULL && file->grf_version >= 8 && file->cargo_list.Length() != 0) {
08218           cargo_map_for_first_refittable = file->cargo_map;
08219         }
08220       }
08221 
08222       if (cargo_map_for_first_refittable != NULL) {
08223         /* Use first refittable cargo from cargo translation table */
08224         byte best_local_slot = 0xFF;
08225         CargoID cargo_type;
08226         FOR_EACH_SET_CARGO_ID(cargo_type, ei->refit_mask) {
08227           byte local_slot = cargo_map_for_first_refittable[cargo_type];
08228           if (local_slot < best_local_slot) {
08229             best_local_slot = local_slot;
08230             ei->cargo_type = cargo_type;
08231           }
08232         }
08233       }
08234 
08235       if (ei->cargo_type == CT_INVALID) {
08236         /* Use first refittable cargo slot */
08237         ei->cargo_type = (CargoID)FindFirstBit(ei->refit_mask);
08238       }
08239     }
08240     if (ei->cargo_type == CT_INVALID) ei->climates = 0;
08241 
08242     /* Clear refit_mask for not refittable ships */
08243     if (e->type == VEH_SHIP && !e->u.ship.old_refittable) {
08244       ei->refit_mask = 0;
08245     }
08246   }
08247 }
08248 
08250 static void FinaliseCanals()
08251 {
08252   for (uint i = 0; i < CF_END; i++) {
08253     if (_water_feature[i].grffile != NULL) {
08254       _water_feature[i].callback_mask = _water_feature[i].grffile->canal_local_properties[i].callback_mask;
08255       _water_feature[i].flags = _water_feature[i].grffile->canal_local_properties[i].flags;
08256     }
08257   }
08258 }
08259 
08261 static void FinaliseEngineArray()
08262 {
08263   Engine *e;
08264 
08265   FOR_ALL_ENGINES(e) {
08266     if (e->GetGRF() == NULL) {
08267       const EngineIDMapping &eid = _engine_mngr[e->index];
08268       if (eid.grfid != INVALID_GRFID || eid.internal_id != eid.substitute_id) {
08269         e->info.string_id = STR_NEWGRF_INVALID_ENGINE;
08270       }
08271     }
08272 
08273     /* When the train does not set property 27 (misc flags), but it
08274      * is overridden by a NewGRF graphically we want to disable the
08275      * flipping possibility. */
08276     if (e->type == VEH_TRAIN && !_gted[e->index].prop27_set && e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
08277       ClrBit(e->info.misc_flags, EF_RAIL_FLIPS);
08278     }
08279 
08280     /* Skip wagons, there livery is defined via the engine */
08281     if (e->type != VEH_TRAIN || e->u.rail.railveh_type != RAILVEH_WAGON) {
08282       LiveryScheme ls = GetEngineLiveryScheme(e->index, INVALID_ENGINE, NULL);
08283       SetBit(_loaded_newgrf_features.used_liveries, ls);
08284       /* Note: For ships and roadvehicles we assume that they cannot be refitted between passenger and freight */
08285 
08286       if (e->type == VEH_TRAIN) {
08287         SetBit(_loaded_newgrf_features.used_liveries, LS_FREIGHT_WAGON);
08288         switch (ls) {
08289           case LS_STEAM:
08290           case LS_DIESEL:
08291           case LS_ELECTRIC:
08292           case LS_MONORAIL:
08293           case LS_MAGLEV:
08294             SetBit(_loaded_newgrf_features.used_liveries, LS_PASSENGER_WAGON_STEAM + ls - LS_STEAM);
08295             break;
08296 
08297           case LS_DMU:
08298           case LS_EMU:
08299             SetBit(_loaded_newgrf_features.used_liveries, LS_PASSENGER_WAGON_DIESEL + ls - LS_DMU);
08300             break;
08301 
08302           default: NOT_REACHED();
08303         }
08304       }
08305     }
08306   }
08307 }
08308 
08310 static void FinaliseCargoArray()
08311 {
08312   for (CargoID c = 0; c < NUM_CARGO; c++) {
08313     CargoSpec *cs = CargoSpec::Get(c);
08314     if (!cs->IsValid()) {
08315       cs->name = cs->name_single = cs->units_volume = STR_NEWGRF_INVALID_CARGO;
08316       cs->quantifier = STR_NEWGRF_INVALID_CARGO_QUANTITY;
08317       cs->abbrev = STR_NEWGRF_INVALID_CARGO_ABBREV;
08318     }
08319   }
08320 }
08321 
08333 static bool IsHouseSpecValid(HouseSpec *hs, const HouseSpec *next1, const HouseSpec *next2, const HouseSpec *next3, const char *filename)
08334 {
08335   if (((hs->building_flags & BUILDING_HAS_2_TILES) != 0 &&
08336         (next1 == NULL || !next1->enabled || (next1->building_flags & BUILDING_HAS_1_TILE) != 0)) ||
08337       ((hs->building_flags & BUILDING_HAS_4_TILES) != 0 &&
08338         (next2 == NULL || !next2->enabled || (next2->building_flags & BUILDING_HAS_1_TILE) != 0 ||
08339         next3 == NULL || !next3->enabled || (next3->building_flags & BUILDING_HAS_1_TILE) != 0))) {
08340     hs->enabled = false;
08341     if (filename != NULL) DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d as multitile, but no suitable tiles follow. Disabling house.", filename, hs->grf_prop.local_id);
08342     return false;
08343   }
08344 
08345   /* Some places sum population by only counting north tiles. Other places use all tiles causing desyncs.
08346    * As the newgrf specs define population to be zero for non-north tiles, we just disable the offending house.
08347    * If you want to allow non-zero populations somewhen, make sure to sum the population of all tiles in all places. */
08348   if (((hs->building_flags & BUILDING_HAS_2_TILES) != 0 && next1->population != 0) ||
08349       ((hs->building_flags & BUILDING_HAS_4_TILES) != 0 && (next2->population != 0 || next3->population != 0))) {
08350     hs->enabled = false;
08351     if (filename != NULL) DEBUG(grf, 1, "FinaliseHouseArray: %s defines multitile house %d with non-zero population on additional tiles. Disabling house.", filename, hs->grf_prop.local_id);
08352     return false;
08353   }
08354 
08355   /* Substitute type is also used for override, and having an override with a different size causes crashes.
08356    * This check should only be done for NewGRF houses because grf_prop.subst_id is not set for original houses.*/
08357   if (filename != NULL && (hs->building_flags & BUILDING_HAS_1_TILE) != (HouseSpec::Get(hs->grf_prop.subst_id)->building_flags & BUILDING_HAS_1_TILE)) {
08358     hs->enabled = false;
08359     DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d with different house size then it's substitute type. Disabling house.", filename, hs->grf_prop.local_id);
08360     return false;
08361   }
08362 
08363   /* Make sure that additional parts of multitile houses are not available. */
08364   if ((hs->building_flags & BUILDING_HAS_1_TILE) == 0 && (hs->building_availability & HZ_ZONALL) != 0 && (hs->building_availability & HZ_CLIMALL) != 0) {
08365     hs->enabled = false;
08366     if (filename != NULL) DEBUG(grf, 1, "FinaliseHouseArray: %s defines house %d without a size but marked it as available. Disabling house.", filename, hs->grf_prop.local_id);
08367     return false;
08368   }
08369 
08370   return true;
08371 }
08372 
08379 static void EnsureEarlyHouse(HouseZones bitmask)
08380 {
08381   Year min_year = MAX_YEAR;
08382 
08383   for (int i = 0; i < HOUSE_MAX; i++) {
08384     HouseSpec *hs = HouseSpec::Get(i);
08385     if (hs == NULL || !hs->enabled) continue;
08386     if ((hs->building_availability & bitmask) != bitmask) continue;
08387     if (hs->min_year < min_year) min_year = hs->min_year;
08388   }
08389 
08390   if (min_year == 0) return;
08391 
08392   for (int i = 0; i < HOUSE_MAX; i++) {
08393     HouseSpec *hs = HouseSpec::Get(i);
08394     if (hs == NULL || !hs->enabled) continue;
08395     if ((hs->building_availability & bitmask) != bitmask) continue;
08396     if (hs->min_year == min_year) hs->min_year = 0;
08397   }
08398 }
08399 
08406 static void FinaliseHouseArray()
08407 {
08408   /* If there are no houses with start dates before 1930, then all houses
08409    * with start dates of 1930 have them reset to 0. This is in order to be
08410    * compatible with TTDPatch, where if no houses have start dates before
08411    * 1930 and the date is before 1930, the game pretends that this is 1930.
08412    * If there have been any houses defined with start dates before 1930 then
08413    * the dates are left alone.
08414    * On the other hand, why 1930? Just 'fix' the houses with the lowest
08415    * minimum introduction date to 0.
08416    */
08417   const GRFFile * const *end = _grf_files.End();
08418   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
08419     HouseSpec **&housespec = (*file)->housespec;
08420     if (housespec == NULL) continue;
08421 
08422     for (int i = 0; i < HOUSE_MAX; i++) {
08423       HouseSpec *hs = housespec[i];
08424 
08425       if (hs == NULL) continue;
08426 
08427       const HouseSpec *next1 = (i + 1 < HOUSE_MAX ? housespec[i + 1] : NULL);
08428       const HouseSpec *next2 = (i + 2 < HOUSE_MAX ? housespec[i + 2] : NULL);
08429       const HouseSpec *next3 = (i + 3 < HOUSE_MAX ? housespec[i + 3] : NULL);
08430 
08431       if (!IsHouseSpecValid(hs, next1, next2, next3, (*file)->filename)) continue;
08432 
08433       _house_mngr.SetEntitySpec(hs);
08434     }
08435   }
08436 
08437   for (int i = 0; i < HOUSE_MAX; i++) {
08438     HouseSpec *hs = HouseSpec::Get(i);
08439     const HouseSpec *next1 = (i + 1 < HOUSE_MAX ? HouseSpec::Get(i + 1) : NULL);
08440     const HouseSpec *next2 = (i + 2 < HOUSE_MAX ? HouseSpec::Get(i + 2) : NULL);
08441     const HouseSpec *next3 = (i + 3 < HOUSE_MAX ? HouseSpec::Get(i + 3) : NULL);
08442 
08443     /* We need to check all houses again to we are sure that multitile houses
08444      * did get consecutive IDs and none of the parts are missing. */
08445     if (!IsHouseSpecValid(hs, next1, next2, next3, NULL)) {
08446       /* GetHouseNorthPart checks 3 houses that are directly before
08447        * it in the house pool. If any of those houses have multi-tile
08448        * flags set it assumes it's part of a multitile house. Since
08449        * we can have invalid houses in the pool marked as disabled, we
08450        * don't want to have them influencing valid tiles. As such set
08451        * building_flags to zero here to make sure any house following
08452        * this one in the pool is properly handled as 1x1 house. */
08453       hs->building_flags = TILE_NO_FLAG;
08454     }
08455   }
08456 
08457   HouseZones climate_mask = (HouseZones)(1 << (_settings_game.game_creation.landscape + 12));
08458   EnsureEarlyHouse(HZ_ZON1 | climate_mask);
08459   EnsureEarlyHouse(HZ_ZON2 | climate_mask);
08460   EnsureEarlyHouse(HZ_ZON3 | climate_mask);
08461   EnsureEarlyHouse(HZ_ZON4 | climate_mask);
08462   EnsureEarlyHouse(HZ_ZON5 | climate_mask);
08463 
08464   if (_settings_game.game_creation.landscape == LT_ARCTIC) {
08465     EnsureEarlyHouse(HZ_ZON1 | HZ_SUBARTC_ABOVE);
08466     EnsureEarlyHouse(HZ_ZON2 | HZ_SUBARTC_ABOVE);
08467     EnsureEarlyHouse(HZ_ZON3 | HZ_SUBARTC_ABOVE);
08468     EnsureEarlyHouse(HZ_ZON4 | HZ_SUBARTC_ABOVE);
08469     EnsureEarlyHouse(HZ_ZON5 | HZ_SUBARTC_ABOVE);
08470   }
08471 }
08472 
08478 static void FinaliseIndustriesArray()
08479 {
08480   const GRFFile * const *end = _grf_files.End();
08481   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
08482     IndustrySpec **&industryspec = (*file)->industryspec;
08483     IndustryTileSpec **&indtspec = (*file)->indtspec;
08484     if (industryspec != NULL) {
08485       for (int i = 0; i < NUM_INDUSTRYTYPES; i++) {
08486         IndustrySpec *indsp = industryspec[i];
08487 
08488         if (indsp != NULL && indsp->enabled) {
08489           StringID strid;
08490           /* process the conversion of text at the end, so to be sure everything will be fine
08491            * and available.  Check if it does not return undefind marker, which is a very good sign of a
08492            * substitute industry who has not changed the string been examined, thus using it as such */
08493           strid = GetGRFStringID(indsp->grf_prop.grffile->grfid, indsp->name);
08494           if (strid != STR_UNDEFINED) indsp->name = strid;
08495 
08496           strid = GetGRFStringID(indsp->grf_prop.grffile->grfid, indsp->closure_text);
08497           if (strid != STR_UNDEFINED) indsp->closure_text = strid;
08498 
08499           strid = GetGRFStringID(indsp->grf_prop.grffile->grfid, indsp->production_up_text);
08500           if (strid != STR_UNDEFINED) indsp->production_up_text = strid;
08501 
08502           strid = GetGRFStringID(indsp->grf_prop.grffile->grfid, indsp->production_down_text);
08503           if (strid != STR_UNDEFINED) indsp->production_down_text = strid;
08504 
08505           strid = GetGRFStringID(indsp->grf_prop.grffile->grfid, indsp->new_industry_text);
08506           if (strid != STR_UNDEFINED) indsp->new_industry_text = strid;
08507 
08508           if (indsp->station_name != STR_NULL) {
08509             /* STR_NULL (0) can be set by grf.  It has a meaning regarding assignation of the
08510              * station's name. Don't want to lose the value, therefore, do not process. */
08511             strid = GetGRFStringID(indsp->grf_prop.grffile->grfid, indsp->station_name);
08512             if (strid != STR_UNDEFINED) indsp->station_name = strid;
08513           }
08514 
08515           _industry_mngr.SetEntitySpec(indsp);
08516           _loaded_newgrf_features.has_newindustries = true;
08517         }
08518       }
08519     }
08520 
08521     if (indtspec != NULL) {
08522       for (int i = 0; i < NUM_INDUSTRYTILES; i++) {
08523         IndustryTileSpec *indtsp = indtspec[i];
08524         if (indtsp != NULL) {
08525           _industile_mngr.SetEntitySpec(indtsp);
08526         }
08527       }
08528     }
08529   }
08530 
08531   for (uint j = 0; j < NUM_INDUSTRYTYPES; j++) {
08532     IndustrySpec *indsp = &_industry_specs[j];
08533     if (indsp->enabled && indsp->grf_prop.grffile != NULL) {
08534       for (uint i = 0; i < 3; i++) {
08535         indsp->conflicting[i] = MapNewGRFIndustryType(indsp->conflicting[i], indsp->grf_prop.grffile->grfid);
08536       }
08537     }
08538     if (!indsp->enabled) {
08539       indsp->name = STR_NEWGRF_INVALID_INDUSTRYTYPE;
08540     }
08541   }
08542 }
08543 
08549 static void FinaliseObjectsArray()
08550 {
08551   const GRFFile * const *end = _grf_files.End();
08552   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
08553     ObjectSpec **&objectspec = (*file)->objectspec;
08554     if (objectspec != NULL) {
08555       for (int i = 0; i < NUM_OBJECTS; i++) {
08556         if (objectspec[i] != NULL && objectspec[i]->grf_prop.grffile != NULL && objectspec[i]->enabled) {
08557           _object_mngr.SetEntitySpec(objectspec[i]);
08558         }
08559       }
08560     }
08561   }
08562 }
08563 
08569 static void FinaliseAirportsArray()
08570 {
08571   const GRFFile * const *end = _grf_files.End();
08572   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
08573     AirportSpec **&airportspec = (*file)->airportspec;
08574     if (airportspec != NULL) {
08575       for (int i = 0; i < NUM_AIRPORTS; i++) {
08576         if (airportspec[i] != NULL && airportspec[i]->enabled) {
08577           _airport_mngr.SetEntitySpec(airportspec[i]);
08578         }
08579       }
08580     }
08581 
08582     AirportTileSpec **&airporttilespec = (*file)->airtspec;
08583     if (airporttilespec != NULL) {
08584       for (uint i = 0; i < NUM_AIRPORTTILES; i++) {
08585         if (airporttilespec[i] != NULL && airporttilespec[i]->enabled) {
08586           _airporttile_mngr.SetEntitySpec(airporttilespec[i]);
08587         }
08588       }
08589     }
08590   }
08591 }
08592 
08593 /* Here we perform initial decoding of some special sprites (as are they
08594  * described at http://www.ttdpatch.net/src/newgrf.txt, but this is only a very
08595  * partial implementation yet).
08596  * XXX: We consider GRF files trusted. It would be trivial to exploit OTTD by
08597  * a crafted invalid GRF file. We should tell that to the user somehow, or
08598  * better make this more robust in the future. */
08599 static void DecodeSpecialSprite(byte *buf, uint num, GrfLoadingStage stage)
08600 {
08601   /* XXX: There is a difference between staged loading in TTDPatch and
08602    * here.  In TTDPatch, for some reason actions 1 and 2 are carried out
08603    * during stage 1, whilst action 3 is carried out during stage 2 (to
08604    * "resolve" cargo IDs... wtf). This is a little problem, because cargo
08605    * IDs are valid only within a given set (action 1) block, and may be
08606    * overwritten after action 3 associates them. But overwriting happens
08607    * in an earlier stage than associating, so...  We just process actions
08608    * 1 and 2 in stage 2 now, let's hope that won't get us into problems.
08609    * --pasky
08610    * We need a pre-stage to set up GOTO labels of Action 0x10 because the grf
08611    * is not in memory and scanning the file every time would be too expensive.
08612    * In other stages we skip action 0x10 since it's already dealt with. */
08613   static const SpecialSpriteHandler handlers[][GLS_END] = {
08614     /* 0x00 */ { NULL,     SafeChangeInfo, NULL,       NULL,           ReserveChangeInfo, FeatureChangeInfo, },
08615     /* 0x01 */ { SkipAct1, SkipAct1,  SkipAct1,        SkipAct1,       SkipAct1,          NewSpriteSet, },
08616     /* 0x02 */ { NULL,     NULL,      NULL,            NULL,           NULL,              NewSpriteGroup, },
08617     /* 0x03 */ { NULL,     GRFUnsafe, NULL,            NULL,           NULL,              FeatureMapSpriteGroup, },
08618     /* 0x04 */ { NULL,     NULL,      NULL,            NULL,           NULL,              FeatureNewName, },
08619     /* 0x05 */ { SkipAct5, SkipAct5,  SkipAct5,        SkipAct5,       SkipAct5,          GraphicsNew, },
08620     /* 0x06 */ { NULL,     NULL,      NULL,            CfgApply,       CfgApply,          CfgApply, },
08621     /* 0x07 */ { NULL,     NULL,      NULL,            NULL,           SkipIf,            SkipIf, },
08622     /* 0x08 */ { ScanInfo, NULL,      NULL,            GRFInfo,        GRFInfo,           GRFInfo, },
08623     /* 0x09 */ { NULL,     NULL,      NULL,            SkipIf,         SkipIf,            SkipIf, },
08624     /* 0x0A */ { SkipActA, SkipActA,  SkipActA,        SkipActA,       SkipActA,          SpriteReplace, },
08625     /* 0x0B */ { NULL,     NULL,      NULL,            GRFLoadError,   GRFLoadError,      GRFLoadError, },
08626     /* 0x0C */ { NULL,     NULL,      NULL,            GRFComment,     NULL,              GRFComment, },
08627     /* 0x0D */ { NULL,     SafeParamSet, NULL,         ParamSet,       ParamSet,          ParamSet, },
08628     /* 0x0E */ { NULL,     SafeGRFInhibit, NULL,       GRFInhibit,     GRFInhibit,        GRFInhibit, },
08629     /* 0x0F */ { NULL,     GRFUnsafe, NULL,            FeatureTownName, NULL,             NULL, },
08630     /* 0x10 */ { NULL,     NULL,      DefineGotoLabel, NULL,           NULL,              NULL, },
08631     /* 0x11 */ { SkipAct11,GRFUnsafe, SkipAct11,       GRFSound,       SkipAct11,         GRFSound, },
08632     /* 0x12 */ { SkipAct12, SkipAct12, SkipAct12,      SkipAct12,      SkipAct12,         LoadFontGlyph, },
08633     /* 0x13 */ { NULL,     NULL,      NULL,            NULL,           NULL,              TranslateGRFStrings, },
08634     /* 0x14 */ { StaticGRFInfo, NULL, NULL,            NULL,           NULL,              NULL, },
08635   };
08636 
08637   GRFLocation location(_cur.grfconfig->ident.grfid, _cur.nfo_line);
08638 
08639   GRFLineToSpriteOverride::iterator it = _grf_line_to_action6_sprite_override.find(location);
08640   if (it == _grf_line_to_action6_sprite_override.end()) {
08641     /* No preloaded sprite to work with; read the
08642      * pseudo sprite content. */
08643     FioReadBlock(buf, num);
08644   } else {
08645     /* Use the preloaded sprite data. */
08646     buf = _grf_line_to_action6_sprite_override[location];
08647     grfmsg(7, "DecodeSpecialSprite: Using preloaded pseudo sprite data");
08648 
08649     /* Skip the real (original) content of this action. */
08650     FioSeekTo(num, SEEK_CUR);
08651   }
08652 
08653   ByteReader br(buf, buf + num);
08654   ByteReader *bufp = &br;
08655 
08656   try {
08657     byte action = bufp->ReadByte();
08658 
08659     if (action == 0xFF) {
08660       grfmsg(2, "DecodeSpecialSprite: Unexpected data block, skipping");
08661     } else if (action == 0xFE) {
08662       grfmsg(2, "DecodeSpecialSprite: Unexpected import block, skipping");
08663     } else if (action >= lengthof(handlers)) {
08664       grfmsg(7, "DecodeSpecialSprite: Skipping unknown action 0x%02X", action);
08665     } else if (handlers[action][stage] == NULL) {
08666       grfmsg(7, "DecodeSpecialSprite: Skipping action 0x%02X in stage %d", action, stage);
08667     } else {
08668       grfmsg(7, "DecodeSpecialSprite: Handling action 0x%02X in stage %d", action, stage);
08669       handlers[action][stage](bufp);
08670     }
08671   } catch (...) {
08672     grfmsg(1, "DecodeSpecialSprite: Tried to read past end of pseudo-sprite data");
08673     DisableGrf(STR_NEWGRF_ERROR_READ_BOUNDS);
08674   }
08675 }
08676 
08677 
08679 extern const byte _grf_cont_v2_sig[8] = {'G', 'R', 'F', 0x82, 0x0D, 0x0A, 0x1A, 0x0A};
08680 
08685 byte GetGRFContainerVersion()
08686 {
08687   size_t pos = FioGetPos();
08688 
08689   if (FioReadWord() == 0) {
08690     /* Check for GRF container version 2, which is identified by the bytes
08691      * '47 52 46 82 0D 0A 1A 0A' at the start of the file. */
08692     for (uint i = 0; i < lengthof(_grf_cont_v2_sig); i++) {
08693       if (FioReadByte() != _grf_cont_v2_sig[i]) return 0; // Invalid format
08694     }
08695 
08696     return 2;
08697   }
08698 
08699   /* Container version 1 has no header, rewind to start. */
08700   FioSeekTo(pos, SEEK_SET);
08701   return 1;
08702 }
08703 
08711 void LoadNewGRFFile(GRFConfig *config, uint file_index, GrfLoadingStage stage, Subdirectory subdir)
08712 {
08713   const char *filename = config->filename;
08714 
08715   /* A .grf file is activated only if it was active when the game was
08716    * started.  If a game is loaded, only its active .grfs will be
08717    * reactivated, unless "loadallgraphics on" is used.  A .grf file is
08718    * considered active if its action 8 has been processed, i.e. its
08719    * action 8 hasn't been skipped using an action 7.
08720    *
08721    * During activation, only actions 0, 1, 2, 3, 4, 5, 7, 8, 9, 0A and 0B are
08722    * carried out.  All others are ignored, because they only need to be
08723    * processed once at initialization.  */
08724   if (stage != GLS_FILESCAN && stage != GLS_SAFETYSCAN && stage != GLS_LABELSCAN) {
08725     _cur.grffile = GetFileByFilename(filename);
08726     if (_cur.grffile == NULL) usererror("File '%s' lost in cache.\n", filename);
08727     if (stage == GLS_RESERVE && config->status != GCS_INITIALISED) return;
08728     if (stage == GLS_ACTIVATION && !HasBit(config->flags, GCF_RESERVED)) return;
08729     _cur.grffile->is_ottdfile = config->IsOpenTTDBaseGRF();
08730   }
08731 
08732   if (file_index > LAST_GRF_SLOT) {
08733     DEBUG(grf, 0, "'%s' is not loaded as the maximum number of GRFs has been reached", filename);
08734     config->status = GCS_DISABLED;
08735     config->error  = new GRFError(STR_NEWGRF_ERROR_MSG_FATAL, STR_NEWGRF_ERROR_TOO_MANY_NEWGRFS_LOADED);
08736     return;
08737   }
08738 
08739   FioOpenFile(file_index, filename, subdir);
08740   _cur.file_index = file_index; // XXX
08741   _palette_remap_grf[_cur.file_index] = (config->palette & GRFP_USE_MASK);
08742 
08743   _cur.grfconfig = config;
08744 
08745   DEBUG(grf, 2, "LoadNewGRFFile: Reading NewGRF-file '%s'", filename);
08746 
08747   _cur.grf_container_ver = GetGRFContainerVersion();
08748   if (_cur.grf_container_ver == 0) {
08749     DEBUG(grf, 7, "LoadNewGRFFile: Custom .grf has invalid format");
08750     return;
08751   }
08752 
08753   if (stage == GLS_INIT || stage == GLS_ACTIVATION) {
08754     /* We need the sprite offsets in the init stage for NewGRF sounds
08755      * and in the activation stage for real sprites. */
08756     ReadGRFSpriteOffsets(_cur.grf_container_ver);
08757   } else {
08758     /* Skip sprite section offset if present. */
08759     if (_cur.grf_container_ver >= 2) FioReadDword();
08760   }
08761 
08762   if (_cur.grf_container_ver >= 2) {
08763     /* Read compression value. */
08764     byte compression = FioReadByte();
08765     if (compression != 0) {
08766       DEBUG(grf, 7, "LoadNewGRFFile: Unsupported compression format");
08767       return;
08768     }
08769   }
08770 
08771   /* Skip the first sprite; we don't care about how many sprites this
08772    * does contain; newest TTDPatches and George's longvehicles don't
08773    * neither, apparently. */
08774   uint32 num = _cur.grf_container_ver >= 2 ? FioReadDword() : FioReadWord();
08775   if (num == 4 && FioReadByte() == 0xFF) {
08776     FioReadDword();
08777   } else {
08778     DEBUG(grf, 7, "LoadNewGRFFile: Custom .grf has invalid format");
08779     return;
08780   }
08781 
08782   _cur.ClearDataForNextFile();
08783 
08784   ReusableBuffer<byte> buf;
08785 
08786   while ((num = (_cur.grf_container_ver >= 2 ? FioReadDword() : FioReadWord())) != 0) {
08787     byte type = FioReadByte();
08788     _cur.nfo_line++;
08789 
08790     if (type == 0xFF) {
08791       if (_cur.skip_sprites == 0) {
08792         DecodeSpecialSprite(buf.Allocate(num), num, stage);
08793 
08794         /* Stop all processing if we are to skip the remaining sprites */
08795         if (_cur.skip_sprites == -1) break;
08796 
08797         continue;
08798       } else {
08799         FioSkipBytes(num);
08800       }
08801     } else {
08802       if (_cur.skip_sprites == 0) {
08803         grfmsg(0, "LoadNewGRFFile: Unexpected sprite, disabling");
08804         DisableGrf(STR_NEWGRF_ERROR_UNEXPECTED_SPRITE);
08805         break;
08806       }
08807 
08808       if (_cur.grf_container_ver >= 2 && type == 0xFD) {
08809         /* Reference to data section. Container version >= 2 only. */
08810         FioSkipBytes(num);
08811       } else {
08812         FioSkipBytes(7);
08813         SkipSpriteData(type, num - 8);
08814       }
08815     }
08816 
08817     if (_cur.skip_sprites > 0) _cur.skip_sprites--;
08818   }
08819 }
08820 
08828 static void ActivateOldShore()
08829 {
08830   /* Use default graphics, if no shore sprites were loaded.
08831    * Should not happen, as the base set's extra grf should include some. */
08832   if (_loaded_newgrf_features.shore == SHORE_REPLACE_NONE) _loaded_newgrf_features.shore = SHORE_REPLACE_ACTION_A;
08833 
08834   if (_loaded_newgrf_features.shore != SHORE_REPLACE_ACTION_5) {
08835     DupSprite(SPR_ORIGINALSHORE_START +  1, SPR_SHORE_BASE +  1); // SLOPE_W
08836     DupSprite(SPR_ORIGINALSHORE_START +  2, SPR_SHORE_BASE +  2); // SLOPE_S
08837     DupSprite(SPR_ORIGINALSHORE_START +  6, SPR_SHORE_BASE +  3); // SLOPE_SW
08838     DupSprite(SPR_ORIGINALSHORE_START +  0, SPR_SHORE_BASE +  4); // SLOPE_E
08839     DupSprite(SPR_ORIGINALSHORE_START +  4, SPR_SHORE_BASE +  6); // SLOPE_SE
08840     DupSprite(SPR_ORIGINALSHORE_START +  3, SPR_SHORE_BASE +  8); // SLOPE_N
08841     DupSprite(SPR_ORIGINALSHORE_START +  7, SPR_SHORE_BASE +  9); // SLOPE_NW
08842     DupSprite(SPR_ORIGINALSHORE_START +  5, SPR_SHORE_BASE + 12); // SLOPE_NE
08843   }
08844 
08845   if (_loaded_newgrf_features.shore == SHORE_REPLACE_ACTION_A) {
08846     DupSprite(SPR_FLAT_GRASS_TILE + 16, SPR_SHORE_BASE +  0); // SLOPE_STEEP_S
08847     DupSprite(SPR_FLAT_GRASS_TILE + 17, SPR_SHORE_BASE +  5); // SLOPE_STEEP_W
08848     DupSprite(SPR_FLAT_GRASS_TILE +  7, SPR_SHORE_BASE +  7); // SLOPE_WSE
08849     DupSprite(SPR_FLAT_GRASS_TILE + 15, SPR_SHORE_BASE + 10); // SLOPE_STEEP_N
08850     DupSprite(SPR_FLAT_GRASS_TILE + 11, SPR_SHORE_BASE + 11); // SLOPE_NWS
08851     DupSprite(SPR_FLAT_GRASS_TILE + 13, SPR_SHORE_BASE + 13); // SLOPE_ENW
08852     DupSprite(SPR_FLAT_GRASS_TILE + 14, SPR_SHORE_BASE + 14); // SLOPE_SEN
08853     DupSprite(SPR_FLAT_GRASS_TILE + 18, SPR_SHORE_BASE + 15); // SLOPE_STEEP_E
08854 
08855     /* XXX - SLOPE_EW, SLOPE_NS are currently not used.
08856      *       If they would be used somewhen, then these grass tiles will most like not look as needed */
08857     DupSprite(SPR_FLAT_GRASS_TILE +  5, SPR_SHORE_BASE + 16); // SLOPE_EW
08858     DupSprite(SPR_FLAT_GRASS_TILE + 10, SPR_SHORE_BASE + 17); // SLOPE_NS
08859   }
08860 }
08861 
08865 static void FinalisePriceBaseMultipliers()
08866 {
08867   extern const PriceBaseSpec _price_base_specs[];
08869   static const uint32 override_features = (1 << GSF_TRAINS) | (1 << GSF_ROADVEHICLES) | (1 << GSF_SHIPS) | (1 << GSF_AIRCRAFT);
08870 
08871   /* Evaluate grf overrides */
08872   int num_grfs = _grf_files.Length();
08873   int *grf_overrides = AllocaM(int, num_grfs);
08874   for (int i = 0; i < num_grfs; i++) {
08875     grf_overrides[i] = -1;
08876 
08877     GRFFile *source = _grf_files[i];
08878     uint32 override = _grf_id_overrides[source->grfid];
08879     if (override == 0) continue;
08880 
08881     GRFFile *dest = GetFileByGRFID(override);
08882     if (dest == NULL) continue;
08883 
08884     grf_overrides[i] = _grf_files.FindIndex(dest);
08885     assert(grf_overrides[i] >= 0);
08886   }
08887 
08888   /* Override features and price base multipliers of earlier loaded grfs */
08889   for (int i = 0; i < num_grfs; i++) {
08890     if (grf_overrides[i] < 0 || grf_overrides[i] >= i) continue;
08891     GRFFile *source = _grf_files[i];
08892     GRFFile *dest = _grf_files[grf_overrides[i]];
08893 
08894     uint32 features = (source->grf_features | dest->grf_features) & override_features;
08895     source->grf_features |= features;
08896     dest->grf_features |= features;
08897 
08898     for (Price p = PR_BEGIN; p < PR_END; p++) {
08899       /* No price defined -> nothing to do */
08900       if (!HasBit(features, _price_base_specs[p].grf_feature) || source->price_base_multipliers[p] == INVALID_PRICE_MODIFIER) continue;
08901       DEBUG(grf, 3, "'%s' overrides price base multiplier %d of '%s'", source->filename, p, dest->filename);
08902       dest->price_base_multipliers[p] = source->price_base_multipliers[p];
08903     }
08904   }
08905 
08906   /* Propagate features and price base multipliers of afterwards loaded grfs, if none is present yet */
08907   for (int i = num_grfs - 1; i >= 0; i--) {
08908     if (grf_overrides[i] < 0 || grf_overrides[i] <= i) continue;
08909     GRFFile *source = _grf_files[i];
08910     GRFFile *dest = _grf_files[grf_overrides[i]];
08911 
08912     uint32 features = (source->grf_features | dest->grf_features) & override_features;
08913     source->grf_features |= features;
08914     dest->grf_features |= features;
08915 
08916     for (Price p = PR_BEGIN; p < PR_END; p++) {
08917       /* Already a price defined -> nothing to do */
08918       if (!HasBit(features, _price_base_specs[p].grf_feature) || dest->price_base_multipliers[p] != INVALID_PRICE_MODIFIER) continue;
08919       DEBUG(grf, 3, "Price base multiplier %d from '%s' propagated to '%s'", p, source->filename, dest->filename);
08920       dest->price_base_multipliers[p] = source->price_base_multipliers[p];
08921     }
08922   }
08923 
08924   /* The 'master grf' now have the correct multipliers. Assign them to the 'addon grfs' to make everything consistent. */
08925   for (int i = 0; i < num_grfs; i++) {
08926     if (grf_overrides[i] < 0) continue;
08927     GRFFile *source = _grf_files[i];
08928     GRFFile *dest = _grf_files[grf_overrides[i]];
08929 
08930     uint32 features = (source->grf_features | dest->grf_features) & override_features;
08931     source->grf_features |= features;
08932     dest->grf_features |= features;
08933 
08934     for (Price p = PR_BEGIN; p < PR_END; p++) {
08935       if (!HasBit(features, _price_base_specs[p].grf_feature)) continue;
08936       if (source->price_base_multipliers[p] != dest->price_base_multipliers[p]) {
08937         DEBUG(grf, 3, "Price base multiplier %d from '%s' propagated to '%s'", p, dest->filename, source->filename);
08938       }
08939       source->price_base_multipliers[p] = dest->price_base_multipliers[p];
08940     }
08941   }
08942 
08943   /* Apply fallback prices for grf version < 8 */
08944   const GRFFile * const *end = _grf_files.End();
08945   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
08946     if ((*file)->grf_version >= 8) continue;
08947     PriceMultipliers &price_base_multipliers = (*file)->price_base_multipliers;
08948     for (Price p = PR_BEGIN; p < PR_END; p++) {
08949       Price fallback_price = _price_base_specs[p].fallback_price;
08950       if (fallback_price != INVALID_PRICE && price_base_multipliers[p] == INVALID_PRICE_MODIFIER) {
08951         /* No price multiplier has been set.
08952          * So copy the multiplier from the fallback price, maybe a multiplier was set there. */
08953         price_base_multipliers[p] = price_base_multipliers[fallback_price];
08954       }
08955     }
08956   }
08957 
08958   /* Decide local/global scope of price base multipliers */
08959   for (GRFFile **file = _grf_files.Begin(); file != end; file++) {
08960     PriceMultipliers &price_base_multipliers = (*file)->price_base_multipliers;
08961     for (Price p = PR_BEGIN; p < PR_END; p++) {
08962       if (price_base_multipliers[p] == INVALID_PRICE_MODIFIER) {
08963         /* No multiplier was set; set it to a neutral value */
08964         price_base_multipliers[p] = 0;
08965       } else {
08966         if (!HasBit((*file)->grf_features, _price_base_specs[p].grf_feature)) {
08967           /* The grf does not define any objects of the feature,
08968            * so it must be a difficulty setting. Apply it globally */
08969           DEBUG(grf, 3, "'%s' sets global price base multiplier %d", (*file)->filename, p);
08970           SetPriceBaseMultiplier(p, price_base_multipliers[p]);
08971           price_base_multipliers[p] = 0;
08972         } else {
08973           DEBUG(grf, 3, "'%s' sets local price base multiplier %d", (*file)->filename, p);
08974         }
08975       }
08976     }
08977   }
08978 }
08979 
08980 void InitDepotWindowBlockSizes();
08981 
08982 extern void InitGRFTownGeneratorNames();
08983 
08985 static void AfterLoadGRFs()
08986 {
08987   for (StringIDToGRFIDMapping::iterator it = _string_to_grf_mapping.begin(); it != _string_to_grf_mapping.end(); it++) {
08988     *((*it).first) = MapGRFStringID((*it).second, *((*it).first));
08989   }
08990   _string_to_grf_mapping.clear();
08991 
08992   /* Free the action 6 override sprites. */
08993   for (GRFLineToSpriteOverride::iterator it = _grf_line_to_action6_sprite_override.begin(); it != _grf_line_to_action6_sprite_override.end(); it++) {
08994     free((*it).second);
08995   }
08996   _grf_line_to_action6_sprite_override.clear();
08997 
08998   /* Polish cargoes */
08999   FinaliseCargoArray();
09000 
09001   /* Pre-calculate all refit masks after loading GRF files. */
09002   CalculateRefitMasks();
09003 
09004   /* Polish engines */
09005   FinaliseEngineArray();
09006 
09007   /* Set the actually used Canal properties */
09008   FinaliseCanals();
09009 
09010   /* Set the block size in the depot windows based on vehicle sprite sizes */
09011   InitDepotWindowBlockSizes();
09012 
09013   /* Add all new houses to the house array. */
09014   FinaliseHouseArray();
09015 
09016   /* Add all new industries to the industry array. */
09017   FinaliseIndustriesArray();
09018 
09019   /* Add all new objects to the object array. */
09020   FinaliseObjectsArray();
09021 
09022   InitializeSortedCargoSpecs();
09023 
09024   /* Sort the list of industry types. */
09025   SortIndustryTypes();
09026 
09027   /* Create dynamic list of industry legends for smallmap_gui.cpp */
09028   BuildIndustriesLegend();
09029 
09030   /* Build the routemap legend, based on the available cargos */
09031   BuildLinkStatsLegend();
09032 
09033   /* Add all new airports to the airports array. */
09034   FinaliseAirportsArray();
09035   BindAirportSpecs();
09036 
09037   /* Update the townname generators list */
09038   InitGRFTownGeneratorNames();
09039 
09040   /* Run all queued vehicle list order changes */
09041   CommitVehicleListOrderChanges();
09042 
09043   /* Load old shore sprites in new position, if they were replaced by ActionA */
09044   ActivateOldShore();
09045 
09046   /* Set up custom rail types */
09047   InitRailTypes();
09048 
09049   Engine *e;
09050   FOR_ALL_ENGINES_OF_TYPE(e, VEH_ROAD) {
09051     if (_gted[e->index].rv_max_speed != 0) {
09052       /* Set RV maximum speed from the mph/0.8 unit value */
09053       e->u.road.max_speed = _gted[e->index].rv_max_speed * 4;
09054     }
09055   }
09056 
09057   FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) {
09058     RailType railtype = GetRailTypeByLabel(_gted[e->index].railtypelabel);
09059     if (railtype == INVALID_RAILTYPE) {
09060       /* Rail type is not available, so disable this engine */
09061       e->info.climates = 0;
09062     } else {
09063       e->u.rail.railtype = railtype;
09064     }
09065   }
09066 
09067   SetYearEngineAgingStops();
09068 
09069   FinalisePriceBaseMultipliers();
09070 
09071   /* Deallocate temporary loading data */
09072   free(_gted);
09073   _grm_sprites.clear();
09074 }
09075 
09081 void LoadNewGRF(uint load_index, uint file_index)
09082 {
09083   /* In case of networking we need to "sync" the start values
09084    * so all NewGRFs are loaded equally. For this we use the
09085    * start date of the game and we set the counters, etc. to
09086    * 0 so they're the same too. */
09087   Date date            = _date;
09088   Year year            = _cur_year;
09089   DateFract date_fract = _date_fract;
09090   uint16 tick_counter  = _tick_counter;
09091   byte display_opt     = _display_opt;
09092 
09093   if (_networking) {
09094     _cur_year     = _settings_game.game_creation.starting_year;
09095     _date         = ConvertYMDToDate(_cur_year, 0, 1);
09096     _date_fract   = 0;
09097     _tick_counter = 0;
09098     _display_opt  = 0;
09099   }
09100 
09101   InitializeGRFSpecial();
09102 
09103   ResetNewGRFData();
09104 
09105   /*
09106    * Reset the status of all files, so we can 'retry' to load them.
09107    * This is needed when one for example rearranges the NewGRFs in-game
09108    * and a previously disabled NewGRF becomes useable. If it would not
09109    * be reset, the NewGRF would remain disabled even though it should
09110    * have been enabled.
09111    */
09112   for (GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
09113     if (c->status != GCS_NOT_FOUND) c->status = GCS_UNKNOWN;
09114   }
09115 
09116   _cur.spriteid = load_index;
09117 
09118   /* Load newgrf sprites
09119    * in each loading stage, (try to) open each file specified in the config
09120    * and load information from it. */
09121   for (GrfLoadingStage stage = GLS_LABELSCAN; stage <= GLS_ACTIVATION; stage++) {
09122     /* Set activated grfs back to will-be-activated between reservation- and activation-stage.
09123      * This ensures that action7/9 conditions 0x06 - 0x0A work correctly. */
09124     for (GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
09125       if (c->status == GCS_ACTIVATED) c->status = GCS_INITIALISED;
09126     }
09127 
09128     if (stage == GLS_RESERVE) {
09129       static const uint32 overrides[][2] = {
09130         { 0x44442202, 0x44440111 }, // UKRS addons modifies UKRS
09131         { 0x6D620402, 0x6D620401 }, // DBSetXL ECS extension modifies DBSetXL
09132         { 0x4D656f20, 0x4D656F17 }, // LV4cut modifies LV4
09133       };
09134       for (size_t i = 0; i < lengthof(overrides); i++) {
09135         SetNewGRFOverride(BSWAP32(overrides[i][0]), BSWAP32(overrides[i][1]));
09136       }
09137     }
09138 
09139     uint slot = file_index;
09140 
09141     _cur.stage = stage;
09142     for (GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
09143       if (c->status == GCS_DISABLED || c->status == GCS_NOT_FOUND) continue;
09144       if (stage > GLS_INIT && HasBit(c->flags, GCF_INIT_ONLY)) continue;
09145 
09146       Subdirectory subdir = slot == file_index ? BASESET_DIR : NEWGRF_DIR;
09147       if (!FioCheckFileExists(c->filename, subdir)) {
09148         DEBUG(grf, 0, "NewGRF file is missing '%s'; disabling", c->filename);
09149         c->status = GCS_NOT_FOUND;
09150         continue;
09151       }
09152 
09153       if (stage == GLS_LABELSCAN) InitNewGRFFile(c);
09154       LoadNewGRFFile(c, slot++, stage, subdir);
09155       if (stage == GLS_RESERVE) {
09156         SetBit(c->flags, GCF_RESERVED);
09157       } else if (stage == GLS_ACTIVATION) {
09158         ClrBit(c->flags, GCF_RESERVED);
09159         assert(GetFileByGRFID(c->ident.grfid) == _cur.grffile);
09160         ClearTemporaryNewGRFData(_cur.grffile);
09161         BuildCargoTranslationMap();
09162         DEBUG(sprite, 2, "LoadNewGRF: Currently %i sprites are loaded", _cur.spriteid);
09163       } else if (stage == GLS_INIT && HasBit(c->flags, GCF_INIT_ONLY)) {
09164         /* We're not going to activate this, so free whatever data we allocated */
09165         ClearTemporaryNewGRFData(_cur.grffile);
09166       }
09167     }
09168   }
09169 
09170   /* Pseudo sprite processing is finished; free temporary stuff */
09171   _cur.ClearDataForNextFile();
09172 
09173   /* Call any functions that should be run after GRFs have been loaded. */
09174   AfterLoadGRFs();
09175 
09176   /* Now revert back to the original situation */
09177   _cur_year     = year;
09178   _date         = date;
09179   _date_fract   = date_fract;
09180   _tick_counter = tick_counter;
09181   _display_opt  = display_opt;
09182 }