newgrf_industries.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 #include "debug.h"
00014 #include "industry.h"
00015 #include "newgrf_industries.h"
00016 #include "newgrf_town.h"
00017 #include "newgrf_cargo.h"
00018 #include "window_func.h"
00019 #include "town.h"
00020 #include "company_base.h"
00021 #include "error.h"
00022 #include "strings_func.h"
00023 #include "core/random_func.hpp"
00024 
00025 #include "table/strings.h"
00026 
00027 static uint32 _industry_creation_random_bits;
00028 
00029 /* Since the industry IDs defined by the GRF file don't necessarily correlate
00030  * to those used by the game, the IDs used for overriding old industries must be
00031  * translated when the idustry spec is set. */
00032 IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);
00033 IndustryTileOverrideManager _industile_mngr(NEW_INDUSTRYTILEOFFSET, NUM_INDUSTRYTILES, INVALID_INDUSTRYTILE);
00034 
00041 IndustryType MapNewGRFIndustryType(IndustryType grf_type, uint32 grf_id)
00042 {
00043   if (grf_type == IT_INVALID) return IT_INVALID;
00044   if (!HasBit(grf_type, 7)) return GB(grf_type, 0, 6);
00045 
00046   return _industry_mngr.GetID(GB(grf_type, 0, 6), grf_id);
00047 }
00048 
00057 uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i, uint32 cur_grfid)
00058 {
00059   if (!IsTileType(tile, MP_INDUSTRY) || GetIndustryIndex(tile) != i->index) {
00060     /* No industry and/or the tile does not have the same industry as the one we match it with */
00061     return 0xFFFF;
00062   }
00063 
00064   IndustryGfx gfx = GetCleanIndustryGfx(tile);
00065   const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
00066 
00067   if (gfx < NEW_INDUSTRYTILEOFFSET) { // Does it belongs to an old type?
00068     /* It is an old tile.  We have to see if it's been overriden */
00069     if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) { // has it been overridden?
00070       return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
00071     }
00072     /* Overriden */
00073     const IndustryTileSpec *tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
00074 
00075     if (tile_ovr->grf_prop.grffile->grfid == cur_grfid) {
00076       return tile_ovr->grf_prop.local_id; // same grf file
00077     } else {
00078       return 0xFFFE; // not the same grf file
00079     }
00080   }
00081   /* Not an 'old type' tile */
00082   if (indtsp->grf_prop.spritegroup[0] != NULL) { // tile has a spritegroup ?
00083     if (indtsp->grf_prop.grffile->grfid == cur_grfid) { // same industry, same grf ?
00084       return indtsp->grf_prop.local_id;
00085     } else {
00086       return 0xFFFE; // Defined in another grf file
00087     }
00088   }
00089   /* The tile has no spritegroup */
00090   return 0xFF << 8 | indtsp->grf_prop.subst_id; // so just give him the substitute
00091 }
00092 
00093 static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Industry *current)
00094 {
00095   uint32 best_dist = UINT32_MAX;
00096   const Industry *i;
00097   FOR_ALL_INDUSTRIES(i) {
00098     if (i->type != type || i == current) continue;
00099 
00100     best_dist = min(best_dist, DistanceManhattan(tile, i->location.tile));
00101   }
00102 
00103   return best_dist;
00104 }
00105 
00116 static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, bool town_filter, const Industry *current)
00117 {
00118   uint32 GrfID = GetRegister(0x100);  
00119   IndustryType ind_index;
00120   uint32 closest_dist = UINT32_MAX;
00121   byte count = 0;
00122 
00123   /* Determine what will be the industry type to look for */
00124   switch (GrfID) {
00125     case 0:  // this is a default industry type
00126       ind_index = param_setID;
00127       break;
00128 
00129     case 0xFFFFFFFF: // current grf
00130       GrfID = GetIndustrySpec(current->type)->grf_prop.grffile->grfid;
00131       /* FALL THROUGH */
00132 
00133     default: // use the grfid specified in register 100h
00134       SetBit(param_setID, 7); // bit 7 means it is not an old type
00135       ind_index = MapNewGRFIndustryType(param_setID, GrfID);
00136       break;
00137   }
00138 
00139   /* If the industry type is invalid, there is none and the closest is far away. */
00140   if (ind_index >= NUM_INDUSTRYTYPES) return 0 | 0xFFFF;
00141 
00142   if (layout_filter == 0 && !town_filter) {
00143     /* If the filter is 0, it could be because none was specified as well as being really a 0.
00144      * In either case, just do the regular var67 */
00145     closest_dist = GetClosestIndustry(current->location.tile, ind_index, current);
00146     count = min(Industry::GetIndustryTypeCount(ind_index), UINT8_MAX); // clamp to 8 bit
00147   } else {
00148     /* Count only those who match the same industry type and layout filter
00149      * Unfortunately, we have to do it manually */
00150     const Industry *i;
00151     FOR_ALL_INDUSTRIES(i) {
00152       if (i->type == ind_index && i != current && (i->selected_layout == layout_filter || layout_filter == 0) && (!town_filter || i->town == current->town)) {
00153         closest_dist = min(closest_dist, DistanceManhattan(current->location.tile, i->location.tile));
00154         count++;
00155       }
00156     }
00157   }
00158 
00159   return count << 16 | GB(closest_dist, 0, 16);
00160 }
00161 
00170 uint32 IndustryGetVariable(const ResolverObject *object, byte variable, uint32 parameter, bool *available)
00171 {
00172   const Industry *industry = object->u.industry.ind;
00173   TileIndex tile = object->u.industry.tile;
00174   IndustryType type = object->u.industry.type;
00175   const IndustrySpec *indspec = GetIndustrySpec(type);
00176 
00177   /* Shall the variable get resolved in parent scope and are we not yet in parent scope? */
00178   if (object->u.industry.gfx == INVALID_INDUSTRYTILE && object->scope == VSG_SCOPE_PARENT) {
00179     /* Pass the request on to the town of the industry */
00180     Town *t;
00181 
00182     if (industry != NULL) {
00183       t = industry->town;
00184     } else if (tile != INVALID_TILE) {
00185       t = ClosestTownFromTile(tile, UINT_MAX);
00186     } else {
00187       *available = false;
00188       return UINT_MAX;
00189     }
00190 
00191     return TownGetVariable(variable, parameter, available, t, object->grffile);
00192   }
00193 
00194   if (industry == NULL) {
00195     DEBUG(grf, 1, "Unhandled variable 0x%X (no available industry) in callback 0x%x", variable, object->callback);
00196 
00197     *available = false;
00198     return UINT_MAX;
00199   }
00200 
00201   switch (variable) {
00202     case 0x40:
00203     case 0x41:
00204     case 0x42: { // waiting cargo, but only if those two callback flags are set
00205       uint16 callback = indspec->callback_mask;
00206       if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
00207         if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {
00208           if (industry->prod_level == 0) return 0;
00209           return min(industry->incoming_cargo_waiting[variable - 0x40] / industry->prod_level, (uint16)0xFFFF);
00210         } else {
00211           return min(industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);
00212         }
00213       } else {
00214         return 0;
00215       }
00216     }
00217 
00218     /* Manhattan distance of closes dry/water tile */
00219     case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00220 
00221     /* Layout number */
00222     case 0x44: return industry->selected_layout;
00223 
00224     /* Company info */
00225     case 0x45: {
00226       byte colours = 0;
00227       bool is_ai = false;
00228 
00229       const Company *c = Company::GetIfValid(industry->founder);
00230       if (c != NULL) {
00231         const Livery *l = &c->livery[LS_DEFAULT];
00232 
00233         is_ai = c->is_ai;
00234         colours = l->colour1 + l->colour2 * 16;
00235       }
00236 
00237       return industry->founder | (is_ai ? 0x10000 : 0) | (colours << 24);
00238     }
00239 
00240     case 0x46: return industry->construction_date; // Date when built - long format - (in days)
00241 
00242     /* Get industry ID at offset param */
00243     case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, industry->location.tile, false), industry, object->grffile->grfid);
00244 
00245     /* Get random tile bits at offset param */
00246     case 0x61:
00247       tile = GetNearbyTile(parameter, tile, false);
00248       return industry->TileBelongsToIndustry(tile) ? GetIndustryRandomBits(tile) : 0;
00249 
00250     /* Land info of nearby tiles */
00251     case 0x62: return GetNearbyIndustryTileInformation(parameter, tile, INVALID_INDUSTRY, false, object->grffile->grf_version >= 8);
00252 
00253     /* Animation stage of nearby tiles */
00254     case 0x63:
00255       tile = GetNearbyTile(parameter, tile, false);
00256       if (industry->TileBelongsToIndustry(tile)) {
00257         return GetAnimationFrame(tile);
00258       }
00259       return 0xFFFFFFFF;
00260 
00261     /* Distance of nearest industry of given type */
00262     case 0x64: return GetClosestIndustry(tile, MapNewGRFIndustryType(parameter, indspec->grf_prop.grffile->grfid), industry);
00263     /* Get town zone and Manhattan distance of closest town */
00264     case 0x65: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceManhattan(tile, industry->town->xy), 0xFFFF);
00265     /* Get square of Euclidian distance of closes town */
00266     case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);
00267 
00268     /* Count of industry, distance of closest instance
00269      * 68 is the same as 67, but with a filtering on selected layout */
00270     case 0x67:
00271     case 0x68: {
00272       byte layout_filter = 0;
00273       bool town_filter = false;
00274       if (variable == 0x68) {
00275         uint32 reg = GetRegister(0x101);
00276         layout_filter = GB(reg, 0, 8);
00277         town_filter = HasBit(reg, 8);
00278       }
00279       return GetCountAndDistanceOfClosestInstance(parameter, layout_filter, town_filter, industry);
00280     }
00281 
00282     /* Get a variable from the persistent storage */
00283     case 0x7C: return (industry->psa != NULL) ? industry->psa->GetValue(parameter) : 0;
00284 
00285     /* Industry structure access*/
00286     case 0x80: return industry->location.tile;
00287     case 0x81: return GB(industry->location.tile, 8, 8);
00288     /* Pointer to the town the industry is associated with */
00289     case 0x82: return industry->town->index;
00290     case 0x83:
00291     case 0x84:
00292     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00293     case 0x86: return industry->location.w;
00294     case 0x87: return industry->location.h;// xy dimensions
00295 
00296     case 0x88:
00297     case 0x89: return industry->produced_cargo[variable - 0x88];
00298     case 0x8A: return industry->produced_cargo_waiting[0];
00299     case 0x8B: return GB(industry->produced_cargo_waiting[0], 8, 8);
00300     case 0x8C: return industry->produced_cargo_waiting[1];
00301     case 0x8D: return GB(industry->produced_cargo_waiting[1], 8, 8);
00302     case 0x8E:
00303     case 0x8F: return industry->production_rate[variable - 0x8E];
00304     case 0x90:
00305     case 0x91:
00306     case 0x92: return industry->accepts_cargo[variable - 0x90];
00307     case 0x93: return industry->prod_level;
00308     /* amount of cargo produced so far THIS month. */
00309     case 0x94: return industry->this_month_production[0];
00310     case 0x95: return GB(industry->this_month_production[0], 8, 8);
00311     case 0x96: return industry->this_month_production[1];
00312     case 0x97: return GB(industry->this_month_production[1], 8, 8);
00313     /* amount of cargo transported so far THIS month. */
00314     case 0x98: return industry->this_month_transported[0];
00315     case 0x99: return GB(industry->this_month_transported[0], 8, 8);
00316     case 0x9A: return industry->this_month_transported[1];
00317     case 0x9B: return GB(industry->this_month_transported[1], 8, 8);
00318     /* fraction of cargo transported LAST month. */
00319     case 0x9C:
00320     case 0x9D: return industry->last_month_pct_transported[variable - 0x9C];
00321     /* amount of cargo produced LAST month. */
00322     case 0x9E: return industry->last_month_production[0];
00323     case 0x9F: return GB(industry->last_month_production[0], 8, 8);
00324     case 0xA0: return industry->last_month_production[1];
00325     case 0xA1: return GB(industry->last_month_production[1], 8, 8);
00326     /* amount of cargo transported last month. */
00327     case 0xA2: return industry->last_month_transported[0];
00328     case 0xA3: return GB(industry->last_month_transported[0], 8, 8);
00329     case 0xA4: return industry->last_month_transported[1];
00330     case 0xA5: return GB(industry->last_month_transported[1], 8, 8);
00331 
00332     case 0xA6: return industry->type;
00333     case 0xA7: return industry->founder;
00334     case 0xA8: return industry->random_colour;
00335     case 0xA9: return Clamp(industry->last_prod_year - ORIGINAL_BASE_YEAR, 0, 255);
00336     case 0xAA: return industry->counter;
00337     case 0xAB: return GB(industry->counter, 8, 8);
00338     case 0xAC: return industry->was_cargo_delivered;
00339 
00340     case 0xB0: return Clamp(industry->construction_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date when built since 1920 (in days)
00341     case 0xB3: return industry->construction_type; // Construction type
00342     case 0xB4: return Clamp(industry->last_cargo_accepted_at - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date last cargo accepted since 1920 (in days)
00343   }
00344 
00345   DEBUG(grf, 1, "Unhandled industry variable 0x%X", variable);
00346 
00347   *available = false;
00348   return UINT_MAX;
00349 }
00350 
00351 static const SpriteGroup *IndustryResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
00352 {
00353   /* IndustryTile do not have 'real' groups */
00354   return NULL;
00355 }
00356 
00357 static uint32 IndustryGetRandomBits(const ResolverObject *object)
00358 {
00359   const Industry *ind = object->u.industry.ind;
00360   return ind != NULL ? ind->random: 0;
00361 }
00362 
00363 static uint32 IndustryGetTriggers(const ResolverObject *object)
00364 {
00365   const Industry *ind = object->u.industry.ind;
00366   return ind != NULL ? ind->random_triggers : 0;
00367 }
00368 
00369 static void IndustrySetTriggers(const ResolverObject *object, int triggers)
00370 {
00371   Industry *ind = object->u.industry.ind;
00372   assert(ind != NULL && ind->index != INVALID_INDUSTRY);
00373   ind->random_triggers = triggers;
00374 }
00375 
00382 void IndustryStorePSA(ResolverObject *object, uint pos, int32 value)
00383 {
00384   Industry *ind = object->u.industry.ind;
00385   if (ind->index == INVALID_INDUSTRY) return;
00386 
00387   if (object->scope != VSG_SCOPE_SELF) {
00388     /* Pass the request on to the town of the industry. */
00389     TownStorePSA(ind->town, object->grffile, pos, value);
00390     return;
00391   }
00392 
00393   if (ind->psa == NULL) {
00394     /* There is no need to create a storage if the value is zero. */
00395     if (value == 0) return;
00396 
00397     /* Create storage on first modification. */
00398     const IndustrySpec *indsp = GetIndustrySpec(ind->type);
00399     uint32 grfid = (indsp->grf_prop.grffile != NULL) ? indsp->grf_prop.grffile->grfid : 0;
00400     assert(PersistentStorage::CanAllocateItem());
00401     ind->psa = new PersistentStorage(grfid);
00402   }
00403 
00404   ind->psa->StoreValue(pos, value);
00405 }
00406 
00407 static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *indus, IndustryType type)
00408 {
00409   res->GetRandomBits = IndustryGetRandomBits;
00410   res->GetTriggers   = IndustryGetTriggers;
00411   res->SetTriggers   = IndustrySetTriggers;
00412   res->GetVariable   = IndustryGetVariable;
00413   res->ResolveReal   = IndustryResolveReal;
00414   res->StorePSA      = IndustryStorePSA;
00415 
00416   res->u.industry.tile = tile;
00417   res->u.industry.ind  = indus;
00418   res->u.industry.gfx  = INVALID_INDUSTRYTILE;
00419   res->u.industry.type = type;
00420 
00421   res->callback        = CBID_NO_CALLBACK;
00422   res->callback_param1 = 0;
00423   res->callback_param2 = 0;
00424   res->ResetState();
00425 
00426   const IndustrySpec *indspec = GetIndustrySpec(type);
00427   res->grffile         = (indspec != NULL ? indspec->grf_prop.grffile : NULL);
00428 }
00429 
00440 uint16 GetIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, Industry *industry, IndustryType type, TileIndex tile)
00441 {
00442   ResolverObject object;
00443   const SpriteGroup *group;
00444 
00445   NewIndustryResolver(&object, tile, industry, type);
00446   object.callback = callback;
00447   object.callback_param1 = param1;
00448   object.callback_param2 = param2;
00449 
00450   group = SpriteGroup::Resolve(GetIndustrySpec(type)->grf_prop.spritegroup[0], &object);
00451   if (group == NULL) return CALLBACK_FAILED;
00452 
00453   return group->GetCallbackResult();
00454 }
00455 
00456 uint32 IndustryLocationGetVariable(const ResolverObject *object, byte variable, uint32 parameter, bool *available)
00457 {
00458   const Industry *industry = object->u.industry.ind;
00459   TileIndex tile = object->u.industry.tile;
00460 
00461   if (object->scope == VSG_SCOPE_PARENT) {
00462     return TownGetVariable(variable, parameter, available, industry->town, object->grffile);
00463   }
00464 
00465   switch (variable) {
00466     case 0x80: return tile;
00467     case 0x81: return GB(tile, 8, 8);
00468 
00469     /* Pointer to the town the industry is associated with */
00470     case 0x82: return industry->town->index;
00471     case 0x83:
00472     case 0x84:
00473     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00474 
00475     /* Number of the layout */
00476     case 0x86: return industry->selected_layout;
00477 
00478     /* Ground type */
00479     case 0x87: return GetTerrainType(tile);
00480 
00481     /* Town zone */
00482     case 0x88: return GetTownRadiusGroup(industry->town, tile);
00483 
00484     /* Manhattan distance of the closest town */
00485     case 0x89: return min(DistanceManhattan(industry->town->xy, tile), 255);
00486 
00487     /* Lowest height of the tile */
00488     case 0x8A: return Clamp(GetTileZ(tile) * (object->grffile->grf_version >= 8 ? 1 : TILE_HEIGHT), 0, 0xFF);
00489 
00490     /* Distance to the nearest water/land tile */
00491     case 0x8B: return GetClosestWaterDistance(tile, (GetIndustrySpec(industry->type)->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00492 
00493     /* Square of Euclidian distance from town */
00494     case 0x8D: return min(DistanceSquare(industry->town->xy, tile), 65535);
00495 
00496     /* 32 random bits */
00497     case 0x8F: return _industry_creation_random_bits;
00498   }
00499 
00500   /* None of the special ones, so try the general ones */
00501   return IndustryGetVariable(object, variable, parameter, available);
00502 }
00503 
00515 CommandCost CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uint layout, uint32 seed, uint16 initial_random_bits, Owner founder, IndustryAvailabilityCallType creation_type)
00516 {
00517   const IndustrySpec *indspec = GetIndustrySpec(type);
00518 
00519   ResolverObject object;
00520   const SpriteGroup *group;
00521 
00522   Industry ind;
00523   ind.index = INVALID_INDUSTRY;
00524   ind.location.tile = tile;
00525   ind.location.w = 0; // important to mark the industry invalid
00526   ind.type = type;
00527   ind.selected_layout = layout;
00528   ind.town = ClosestTownFromTile(tile, UINT_MAX);
00529   ind.random = initial_random_bits;
00530   ind.founder = founder;
00531 
00532   NewIndustryResolver(&object, tile, &ind, type);
00533   object.GetVariable = IndustryLocationGetVariable;
00534   object.callback = CBID_INDUSTRY_LOCATION;
00535   object.callback_param2 = creation_type;
00536   _industry_creation_random_bits = seed;
00537 
00538   group = SpriteGroup::Resolve(GetIndustrySpec(type)->grf_prop.spritegroup[0], &object);
00539 
00540   /* Unlike the "normal" cases, not having a valid result means we allow
00541    * the building of the industry, as that's how it's done in TTDP. */
00542   if (group == NULL) return CommandCost();
00543   uint16 result = group->GetCallbackResult();
00544   if (result == CALLBACK_FAILED) return CommandCost();
00545 
00546   return GetErrorMessageFromLocationCallbackResult(result, indspec->grf_prop.grffile->grfid, STR_ERROR_SITE_UNSUITABLE);
00547 }
00548 
00555 uint32 GetIndustryProbabilityCallback(IndustryType type, IndustryAvailabilityCallType creation_type, uint32 default_prob)
00556 {
00557   const IndustrySpec *indspec = GetIndustrySpec(type);
00558 
00559   if (HasBit(indspec->callback_mask, CBM_IND_PROBABILITY)) {
00560     uint16 res = GetIndustryCallback(CBID_INDUSTRY_PROBABILITY, 0, creation_type, NULL, type, INVALID_TILE);
00561     if (res != CALLBACK_FAILED) {
00562       if (indspec->grf_prop.grffile->grf_version < 8) {
00563         /* Disallow if result != 0 */
00564         if (res != 0) default_prob = 0;
00565       } else {
00566         /* Use returned probability. 0x100 to use default */
00567         if (res < 0x100) {
00568           default_prob = res;
00569         } else if (res > 0x100) {
00570           ErrorUnknownCallbackResult(indspec->grf_prop.grffile->grfid, CBID_INDUSTRY_PROBABILITY, res);
00571         }
00572       }
00573     }
00574   }
00575   return default_prob;
00576 }
00577 
00578 static int32 DerefIndProd(int field, bool use_register)
00579 {
00580   return use_register ? (int32)GetRegister(field) : field;
00581 }
00582 
00588 void IndustryProductionCallback(Industry *ind, int reason)
00589 {
00590   const IndustrySpec *spec = GetIndustrySpec(ind->type);
00591   ResolverObject object;
00592   NewIndustryResolver(&object, ind->location.tile, ind, ind->type);
00593   if ((spec->behaviour & INDUSTRYBEH_PRODCALLBACK_RANDOM) != 0) object.callback_param1 = Random();
00594   int multiplier = 1;
00595   if ((spec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) multiplier = ind->prod_level;
00596   object.callback_param2 = reason;
00597 
00598   for (uint loop = 0;; loop++) {
00599     /* limit the number of calls to break infinite loops.
00600      * 'loop' is provided as 16 bits to the newgrf, so abort when those are exceeded. */
00601     if (loop >= 0x10000) {
00602       /* display error message */
00603       SetDParamStr(0, spec->grf_prop.grffile->filename);
00604       SetDParam(1, spec->name);
00605       ShowErrorMessage(STR_NEWGRF_BUGGY, STR_NEWGRF_BUGGY_ENDLESS_PRODUCTION_CALLBACK, WL_WARNING);
00606 
00607       /* abort the function early, this error isn't critical and will allow the game to continue to run */
00608       break;
00609     }
00610 
00611     SB(object.callback_param2, 8, 16, loop);
00612     const SpriteGroup *tgroup = SpriteGroup::Resolve(spec->grf_prop.spritegroup[0], &object);
00613     if (tgroup == NULL || tgroup->type != SGT_INDUSTRY_PRODUCTION) break;
00614     const IndustryProductionSpriteGroup *group = (const IndustryProductionSpriteGroup *)tgroup;
00615 
00616     bool deref = (group->version == 1);
00617 
00618     for (uint i = 0; i < 3; i++) {
00619       ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->subtract_input[i], deref) * multiplier, 0, 0xFFFF);
00620     }
00621     for (uint i = 0; i < 2; i++) {
00622       ind->produced_cargo_waiting[i] = Clamp(ind->produced_cargo_waiting[i] + max(DerefIndProd(group->add_output[i], deref), 0) * multiplier, 0, 0xFFFF);
00623     }
00624 
00625     int32 again = DerefIndProd(group->again, deref);
00626     if (again == 0) break;
00627 
00628     SB(object.callback_param2, 24, 8, again);
00629   }
00630 
00631   SetWindowDirty(WC_INDUSTRY_VIEW, ind->index);
00632 }
00633 
00639 void GetIndustryResolver(ResolverObject *ro, uint index)
00640 {
00641   Industry *i = Industry::Get(index);
00642   NewIndustryResolver(ro, i->location.tile, i, i->type);
00643 }
00644 
00652 bool IndustryTemporarilyRefusesCargo(Industry *ind, CargoID cargo_type)
00653 {
00654   assert(cargo_type == ind->accepts_cargo[0] || cargo_type == ind->accepts_cargo[1] || cargo_type == ind->accepts_cargo[2]);
00655 
00656   const IndustrySpec *indspec = GetIndustrySpec(ind->type);
00657   if (HasBit(indspec->callback_mask, CBM_IND_REFUSE_CARGO)) {
00658     uint16 res = GetIndustryCallback(CBID_INDUSTRY_REFUSE_CARGO,
00659         0, GetReverseCargoTranslation(cargo_type, indspec->grf_prop.grffile),
00660         ind, ind->type, ind->location.tile);
00661     if (res != CALLBACK_FAILED) return !ConvertBooleanCallback(indspec->grf_prop.grffile, CBID_INDUSTRY_REFUSE_CARGO, res);
00662   }
00663   return false;
00664 }