# newgrf_industrytiles.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 "openttd.h"
    00014 #include "variables.h"
    00015 #include "debug.h"
    00016 #include "viewport_func.h"
    00017 #include "landscape.h"
    00018 #include "newgrf.h"
    00019 #include "core/random_func.hpp"
    00020 #include "newgrf_commons.h"
    00021 #include "newgrf_industries.h"
    00022 #include "newgrf_industrytiles.h"
    00023 #include "newgrf_sound.h"
    00024 #include "newgrf_text.h"
    00025 #include "industry.h"
    00026 #include "sprite.h"
    00027 #include "transparency.h"
    00028 #include "functions.h"
    00029 #include "town.h"
    00030 #include "command_func.h"
    00031 #include "animated_tile_func.h"
    00032 #include "water.h"
    00033
    00034 #include "table/strings.h"
    00035
    00043 uint32 GetNearbyIndustryTileInformation(byte parameter, TileIndex tile, IndustryID index)
    00044 {
    00045   if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required
    00046   bool is_same_industry = (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == index);
    00047
    00048   return GetNearbyTileInformation(tile) | (is_same_industry ? 1 : 0) << 8;
    00049 }
    00050
    00061 static uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile)
    00062 {
    00063   byte x = TileX(tile) - TileX(ind_tile);
    00064   byte y = TileY(tile) - TileY(ind_tile);
    00065
    00066   return ((y & 0xF) << 20) | ((x & 0xF) << 16) | (y << 8) | x;
    00067 }
    00068
    00069 static uint32 IndustryTileGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
    00070 {
    00071   const Industry *inds = object->u.industry.ind;
    00072   TileIndex tile       = object->u.industry.tile;
    00073
    00074   if (object->scope == VSG_SCOPE_PARENT) {
    00075     return IndustryGetVariable(object, variable, parameter, available);
    00076   }
    00077
    00078   switch (variable) {
    00079     /* Construction state of the tile: a value between 0 and 3 */
    00080     case 0x40: return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryConstructionStage(tile) : 0;
    00081
    00082     /* Terrain type */
    00083     case 0x41: return GetTerrainType(tile);
    00084
    00085     /* Current town zone of the tile in the nearest town */
    00086     case 0x42: return GetTownRadiusGroup(ClosestTownFromTile(tile, UINT_MAX), tile);
    00087
    00088     /* Relative position */
    00089     case 0x43: return GetRelativePosition(tile, inds->xy);
    00090
    00091     /* Animation frame. Like house variable 46 but can contain anything 0..FF. */
    00092     case 0x44: return (IsTileType(tile, MP_INDUSTRY)) ? GetIndustryAnimationState(tile) : 0;
    00093
    00094     /* Land info of nearby tiles */
    00095     case 0x60: return GetNearbyIndustryTileInformation(parameter, tile, inds == NULL ? (IndustryID)INVALID_INDUSTRY : inds->index);
    00096
    00097     /* Animation stage of nearby tiles */
    00098     case 0x61:
    00099       tile = GetNearbyTile(parameter, tile);
    00100       if (IsTileType(tile, MP_INDUSTRY) && Industry::GetByTile(tile) == inds) {
    00101         return GetIndustryAnimationState(tile);
    00102       }
    00103       return UINT_MAX;
    00104
    00105     /* Get industry tile ID at offset */
    00106     case 0x62: return GetIndustryIDAtOffset(GetNearbyTile(parameter, tile), inds);
    00107   }
    00108
    00109   DEBUG(grf, 1, "Unhandled industry tile property 0x%X", variable);
    00110
    00111   *available = false;
    00112   return UINT_MAX;
    00113 }
    00114
    00115 static const SpriteGroup *IndustryTileResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
    00116 {
    00117   /* IndustryTile do not have 'real' groups.  Or do they?? */
    00118   return NULL;
    00119 }
    00120
    00121 static uint32 IndustryTileGetRandomBits(const ResolverObject *object)
    00122 {
    00123   const TileIndex tile = object->u.industry.tile;
    00124   if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
    00125   return (object->scope == VSG_SCOPE_SELF) ? GetIndustryRandomBits(tile) : Industry::GetByTile(tile)->random;
    00126 }
    00127
    00128 static uint32 IndustryTileGetTriggers(const ResolverObject *object)
    00129 {
    00130   const TileIndex tile = object->u.industry.tile;
    00131   if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return 0;
    00132   return (object->scope == VSG_SCOPE_SELF) ? GetIndustryTriggers(tile) : Industry::GetByTile(tile)->random_triggers;
    00133 }
    00134
    00135 static void IndustryTileSetTriggers(const ResolverObject *object, int triggers)
    00136 {
    00137   const TileIndex tile = object->u.industry.tile;
    00138   if (tile == INVALID_TILE || !IsTileType(tile, MP_INDUSTRY)) return;
    00139
    00140   if (object->scope == VSG_SCOPE_SELF) {
    00141     SetIndustryTriggers(tile, triggers);
    00142   } else {
    00143     Industry::GetByTile(tile)->random_triggers = triggers;
    00144   }
    00145 }
    00146
    00147 static void NewIndustryTileResolver(ResolverObject *res, IndustryGfx gfx, TileIndex tile, Industry *indus)
    00148 {
    00149   res->GetRandomBits = IndustryTileGetRandomBits;
    00150   res->GetTriggers   = IndustryTileGetTriggers;
    00151   res->SetTriggers   = IndustryTileSetTriggers;
    00152   res->GetVariable   = IndustryTileGetVariable;
    00153   res->ResolveReal   = IndustryTileResolveReal;
    00154
    00155   res->psa             = &indus->psa;
    00156   res->u.industry.tile = tile;
    00157   res->u.industry.ind  = indus;
    00158   res->u.industry.gfx  = gfx;
    00159   res->u.industry.type = indus->type;
    00160
    00161   res->callback        = CBID_NO_CALLBACK;
    00162   res->callback_param1 = 0;
    00163   res->callback_param2 = 0;
    00164   res->last_value      = 0;
    00165   res->trigger         = 0;
    00166   res->reseed          = 0;
    00167   res->count           = 0;
    00168
    00169   const IndustryTileSpec *its = GetIndustryTileSpec(gfx);
    00170   res->grffile         = (its != NULL ? its->grf_prop.grffile : NULL);
    00171 }
    00172
    00173 static void IndustryDrawTileLayout(const TileInfo *ti, const TileLayoutSpriteGroup *group, byte rnd_colour, byte stage, IndustryGfx gfx)
    00174 {
    00175   const DrawTileSprites *dts = group->dts;
    00176   const DrawTileSeqStruct *dtss;
    00177
    00178   SpriteID image = dts->ground.sprite;
    00179   SpriteID pal   = dts->ground.pal;
    00180
    00181   if (IS_CUSTOM_SPRITE(image)) image += stage;
    00182
    00183   if (GB(image, 0, SPRITE_WIDTH) != 0) {
    00184     /* If the ground sprite is the default flat water sprite, draw also canal/river borders
    00185      * Do not do this if the tile's WaterClass is 'land'. */
    00186     if (image == SPR_FLAT_WATER_TILE && IsIndustryTileOnWater(ti->tile)) {
    00187       DrawWaterClassGround(ti);
    00188     } else {
    00189       DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, GENERAL_SPRITE_COLOUR(rnd_colour)));
    00190     }
    00191   }
    00192
    00193   foreach_draw_tile_seq(dtss, dts->seq) {
    00194     if (GB(dtss->image.sprite, 0, SPRITE_WIDTH) == 0) continue;
    00195
    00196     image = dtss->image.sprite;
    00197     pal   = dtss->image.pal;
    00198
    00199     /* Stop drawing sprite sequence once we meet a sprite that doesn't have to be opaque */
    00200     if (IsInvisibilitySet(TO_INDUSTRIES) && !HasBit(image, SPRITE_MODIFIER_OPAQUE)) return;
    00201
    00202     if (IS_CUSTOM_SPRITE(image)) image += stage;
    00203
    00204     pal = SpriteLayoutPaletteTransform(image, pal, GENERAL_SPRITE_COLOUR(rnd_colour));
    00205
    00206     if ((byte)dtss->delta_z != 0x80) {
    00207       AddSortableSpriteToDraw(
    00208         image, pal,
    00209         ti->x + dtss->delta_x, ti->y + dtss->delta_y,
    00210         dtss->size_x, dtss->size_y,
    00211         dtss->size_z, ti->z + dtss->delta_z,
    00212         !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_INDUSTRIES)
    00213       );
    00214     } else {
    00215       /* For industries and houses delta_x and delta_y are unsigned */
    00216       AddChildSpriteScreen(image, pal, (byte)dtss->delta_x, (byte)dtss->delta_y, !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_INDUSTRIES));
    00217     }
    00218   }
    00219 }
    00220
    00221 uint16 GetIndustryTileCallback(CallbackID callback, uint32 param1, uint32 param2, IndustryGfx gfx_id, Industry *industry, TileIndex tile)
    00222 {
    00223   ResolverObject object;
    00224   const SpriteGroup *group;
    00225
    00226   NewIndustryTileResolver(&object, gfx_id, tile, industry);
    00227   object.callback = callback;
    00228   object.callback_param1 = param1;
    00229   object.callback_param2 = param2;
    00230
    00231   group = SpriteGroup::Resolve(GetIndustryTileSpec(gfx_id)->grf_prop.spritegroup, &object);
    00232   if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
    00233
    00234   return group->GetCallbackResult();
    00235 }
    00236
    00237 bool DrawNewIndustryTile(TileInfo *ti, Industry *i, IndustryGfx gfx, const IndustryTileSpec *inds)
    00238 {
    00239   const SpriteGroup *group;
    00240   ResolverObject object;
    00241
    00242   if (ti->tileh != SLOPE_FLAT) {
    00243     bool draw_old_one = true;
    00244     if (HasBit(inds->callback_mask, CBM_INDT_DRAW_FOUNDATIONS)) {
    00245       /* Called to determine the type (if any) of foundation to draw for industry tile */
    00246       uint32 callback_res = GetIndustryTileCallback(CBID_INDUSTRY_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
    00247       draw_old_one = (callback_res != 0);
    00248     }
    00249
    00250     if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
    00251   }
    00252
    00253   NewIndustryTileResolver(&object, gfx, ti->tile, i);
    00254
    00255   group = SpriteGroup::Resolve(inds->grf_prop.spritegroup, &object);
    00256   const TileLayoutSpriteGroup *tlgroup = (const TileLayoutSpriteGroup *)group;
    00257   if (group == NULL || group->type != SGT_TILELAYOUT || tlgroup->num_building_stages == 0) {
    00258     return false;
    00259   } else {
    00260     /* Limit the building stage to the number of stages supplied. */
    00261     byte stage = GetIndustryConstructionStage(ti->tile);
    00262     stage = Clamp(stage - 4 + tlgroup->num_building_stages, 0, tlgroup->num_building_stages - 1);
    00263     IndustryDrawTileLayout(ti, tlgroup, i->random_colour, stage, gfx);
    00264     return true;
    00265   }
    00266 }
    00267
    00268 extern bool IsSlopeRefused(Slope current, Slope refused);
    00269
    00270 bool PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, uint itspec_index)
    00271 {
    00272   Industry ind;
    00273   ind.index = INVALID_INDUSTRY;
    00274   ind.xy = ind_base_tile;
    00275   ind.width = 0;
    00276   ind.type = type;
    00277
    00278   uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_SHAPE_CHECK, 0, itspec_index, gfx, &ind, ind_tile);
    00279   if (callback_res == CALLBACK_FAILED) {
    00280     return !IsSlopeRefused(GetTileSlope(ind_tile, NULL), its->slopes_refused);
    00281   }
    00282   if (its->grf_prop.grffile->grf_version < 7) {
    00283     return callback_res != 0;
    00284   }
    00285   if (callback_res == 0x400) return true;
    00286
    00287   /* Copy some parameters from the registers to the error message text ref. stack */
    00288   SwitchToErrorRefStack();
    00289   PrepareTextRefStackUsage(4);
    00290   SwitchToNormalRefStack();
    00291
    00292   switch (callback_res) {
    00293     case 0x401: _error_message = STR_ERROR_SITE_UNSUITABLE;                 return false;
    00294     case 0x402: _error_message = STR_ERROR_CAN_ONLY_BE_BUILT_IN_RAINFOREST; return false;
    00295     case 0x403: _error_message = STR_ERROR_CAN_ONLY_BE_BUILT_IN_DESERT;     return false;
    00296     default: _error_message = GetGRFStringID(its->grf_prop.grffile->grfid, 0xD000 + callback_res); return false;
    00297   }
    00298 }
    00299
    00300 void AnimateNewIndustryTile(TileIndex tile)
    00301 {
    00302   Industry *ind = Industry::GetByTile(tile);
    00303   IndustryGfx gfx = GetIndustryGfx(tile);
    00304   const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
    00305   byte animation_speed = itspec->animation_speed;
    00306
    00307   if (HasBit(itspec->callback_mask, CBM_INDT_ANIM_SPEED)) {
    00308     uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIMATION_SPEED, 0, 0, gfx, ind, tile);
    00309     if (callback_res != CALLBACK_FAILED) animation_speed = Clamp(callback_res & 0xFF, 0, 16);
    00310   }
    00311
    00312   /* An animation speed of 2 means the animation frame changes 4 ticks, and
    00313    * increasing this value by one doubles the wait. 0 is the minimum value
    00314    * allowed for animation_speed, which corresponds to 30ms, and 16 is the
    00315    * maximum, corresponding to around 33 minutes. */
    00316   if ((_tick_counter % (1 << animation_speed)) != 0) return;
    00317
    00318   bool frame_set_by_callback = false;
    00319   byte frame = GetIndustryAnimationState(tile);
    00320   uint16 num_frames = GB(itspec->animation_info, 0, 8);
    00321
    00322   if (HasBit(itspec->callback_mask, CBM_INDT_ANIM_NEXT_FRAME)) {
    00323     uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_NEXT_FRAME, HasBit(itspec->animation_special_flags, 0) ? Random() : 0, 0, gfx, ind, tile);
    00324
    00325     if (callback_res != CALLBACK_FAILED) {
    00326       frame_set_by_callback = true;
    00327
    00328       switch (callback_res & 0xFF) {
    00329         case 0xFF:
    00330           DeleteAnimatedTile(tile);
    00331           break;
    00332         case 0xFE:
    00333           /* Carry on as normal. */
    00334           frame_set_by_callback = false;
    00335           break;
    00336         default:
    00337           frame = callback_res & 0xFF;
    00338           break;
    00339       }
    00340
    00341       /* If the lower 7 bits of the upper byte of the callback
    00342        * result are not empty, it is a sound effect. */
    00343       if (GB(callback_res, 8, 7) != 0) PlayTileSound(itspec->grf_prop.grffile, GB(callback_res, 8, 7), tile);
    00344     }
    00345   }
    00346
    00347   if (!frame_set_by_callback) {
    00348     if (frame < num_frames) {
    00349       frame++;
    00350     } else if (frame == num_frames && GB(itspec->animation_info, 8, 8) == 1) {
    00351       /* This animation loops, so start again from the beginning */
    00352       frame = 0;
    00353     } else {
    00354       /* This animation doesn't loop, so stay here */
    00355       DeleteAnimatedTile(tile);
    00356     }
    00357   }
    00358
    00359   SetIndustryAnimationState(tile, frame);
    00360   MarkTileDirtyByTile(tile);
    00361 }
    00362
    00363 static void ChangeIndustryTileAnimationFrame(const IndustryTileSpec *itspec, TileIndex tile, IndustryAnimationTrigger iat, uint32 random_bits, IndustryGfx gfx, Industry *ind)
    00364 {
    00365   uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_START_STOP, random_bits, iat, gfx, ind, tile);
    00366   if (callback_res == CALLBACK_FAILED) return;
    00367
    00368   switch (callback_res & 0xFF) {
    00369     case 0xFD: /* Do nothing. */         break;
    00370     case 0xFE: AddAnimatedTile(tile);    break;
    00371     case 0xFF: DeleteAnimatedTile(tile); break;
    00372     default:
    00373       SetIndustryAnimationState(tile, callback_res & 0xFF);
    00374       AddAnimatedTile(tile);
    00375       break;
    00376   }
    00377
    00378   /* If the lower 7 bits of the upper byte of the callback
    00379    * result are not empty, it is a sound effect. */
    00380   if (GB(callback_res, 8, 7) != 0) PlayTileSound(itspec->grf_prop.grffile, GB(callback_res, 8, 7), tile);
    00381 }
    00382
    00383 bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
    00384 {
    00385   IndustryGfx gfx = GetIndustryGfx(tile);
    00386   const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
    00387
    00388   if (!HasBit(itspec->animation_triggers, iat)) return false;
    00389
    00390   Industry *ind = Industry::GetByTile(tile);
    00391   ChangeIndustryTileAnimationFrame(itspec, tile, iat, random, gfx, ind);
    00392   return true;
    00393 }
    00394
    00395 bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
    00396 {
    00397   bool ret = true;
    00398   uint32 random = Random();
    00399   TILE_LOOP(tile, ind->width, ind->height, ind->xy) {
    00400     if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
    00401       if (StartStopIndustryTileAnimation(tile, iat, random)) {
    00402         SB(random, 0, 16, Random());
    00403       } else {
    00404         ret = false;
    00405       }
    00406     }
    00407   }
    00408
    00409   return ret;
    00410 }
    00411
    00412 static void DoTriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger, Industry *ind)
    00413 {
    00414   ResolverObject object;
    00415
    00416   IndustryGfx gfx = GetIndustryGfx(tile);
    00417   const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
    00418
    00419   if (itspec->grf_prop.spritegroup == NULL) return;
    00420
    00421   NewIndustryTileResolver(&object, gfx, tile, ind);
    00422
    00423   object.callback = CBID_RANDOM_TRIGGER;
    00424   object.trigger = trigger;
    00425
    00426   const SpriteGroup *group = SpriteGroup::Resolve(itspec->grf_prop.spritegroup, &object);
    00427   if (group == NULL) return;
    00428
    00429   byte new_random_bits = Random();
    00430   byte random_bits = GetIndustryRandomBits(tile);
    00431   random_bits &= ~object.reseed;
    00432   random_bits |= new_random_bits & object.reseed;
    00433   SetIndustryRandomBits(tile, random_bits);
    00434   MarkTileDirtyByTile(tile);
    00435 }
    00436
    00437 void TriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger)
    00438 {
    00439   DoTriggerIndustryTile(tile, trigger, Industry::GetByTile(tile));
    00440 }
    00441
    00442 void TriggerIndustry(Industry *ind, IndustryTileTrigger trigger)
    00443 {
    00444   TILE_LOOP(tile, ind->width, ind->height, ind->xy) {
    00445     if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
    00446       DoTriggerIndustryTile(tile, trigger, ind);
    00447     }
    00448   }
    00449 }