newgrf_industries.cpp

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00001 /* $Id: newgrf_industries.cpp 24973 2013-02-05 21:38:38Z peter1138 $ */
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 /* Since the industry IDs defined by the GRF file don't necessarily correlate
00028  * to those used by the game, the IDs used for overriding old industries must be
00029  * translated when the idustry spec is set. */
00030 IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);
00031 IndustryTileOverrideManager _industile_mngr(NEW_INDUSTRYTILEOFFSET, NUM_INDUSTRYTILES, INVALID_INDUSTRYTILE);
00032 
00039 IndustryType MapNewGRFIndustryType(IndustryType grf_type, uint32 grf_id)
00040 {
00041   if (grf_type == IT_INVALID) return IT_INVALID;
00042   if (!HasBit(grf_type, 7)) return GB(grf_type, 0, 6);
00043 
00044   return _industry_mngr.GetID(GB(grf_type, 0, 6), grf_id);
00045 }
00046 
00055 uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i, uint32 cur_grfid)
00056 {
00057   if (!IsTileType(tile, MP_INDUSTRY) || GetIndustryIndex(tile) != i->index) {
00058     /* No industry and/or the tile does not have the same industry as the one we match it with */
00059     return 0xFFFF;
00060   }
00061 
00062   IndustryGfx gfx = GetCleanIndustryGfx(tile);
00063   const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
00064 
00065   if (gfx < NEW_INDUSTRYTILEOFFSET) { // Does it belongs to an old type?
00066     /* It is an old tile.  We have to see if it's been overridden */
00067     if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) { // has it been overridden?
00068       return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
00069     }
00070     /* Overridden */
00071     const IndustryTileSpec *tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
00072 
00073     if (tile_ovr->grf_prop.grffile->grfid == cur_grfid) {
00074       return tile_ovr->grf_prop.local_id; // same grf file
00075     } else {
00076       return 0xFFFE; // not the same grf file
00077     }
00078   }
00079   /* Not an 'old type' tile */
00080   if (indtsp->grf_prop.spritegroup[0] != NULL) { // tile has a spritegroup ?
00081     if (indtsp->grf_prop.grffile->grfid == cur_grfid) { // same industry, same grf ?
00082       return indtsp->grf_prop.local_id;
00083     } else {
00084       return 0xFFFE; // Defined in another grf file
00085     }
00086   }
00087   /* The tile has no spritegroup */
00088   return 0xFF << 8 | indtsp->grf_prop.subst_id; // so just give him the substitute
00089 }
00090 
00091 static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Industry *current)
00092 {
00093   uint32 best_dist = UINT32_MAX;
00094   const Industry *i;
00095   FOR_ALL_INDUSTRIES(i) {
00096     if (i->type != type || i == current) continue;
00097 
00098     best_dist = min(best_dist, DistanceManhattan(tile, i->location.tile));
00099   }
00100 
00101   return best_dist;
00102 }
00103 
00114 static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, bool town_filter, const Industry *current)
00115 {
00116   uint32 GrfID = GetRegister(0x100);  
00117   IndustryType ind_index;
00118   uint32 closest_dist = UINT32_MAX;
00119   byte count = 0;
00120 
00121   /* Determine what will be the industry type to look for */
00122   switch (GrfID) {
00123     case 0:  // this is a default industry type
00124       ind_index = param_setID;
00125       break;
00126 
00127     case 0xFFFFFFFF: // current grf
00128       GrfID = GetIndustrySpec(current->type)->grf_prop.grffile->grfid;
00129       /* FALL THROUGH */
00130 
00131     default: // use the grfid specified in register 100h
00132       SetBit(param_setID, 7); // bit 7 means it is not an old type
00133       ind_index = MapNewGRFIndustryType(param_setID, GrfID);
00134       break;
00135   }
00136 
00137   /* If the industry type is invalid, there is none and the closest is far away. */
00138   if (ind_index >= NUM_INDUSTRYTYPES) return 0 | 0xFFFF;
00139 
00140   if (layout_filter == 0 && !town_filter) {
00141     /* If the filter is 0, it could be because none was specified as well as being really a 0.
00142      * In either case, just do the regular var67 */
00143     closest_dist = GetClosestIndustry(current->location.tile, ind_index, current);
00144     count = min(Industry::GetIndustryTypeCount(ind_index), UINT8_MAX); // clamp to 8 bit
00145   } else {
00146     /* Count only those who match the same industry type and layout filter
00147      * Unfortunately, we have to do it manually */
00148     const Industry *i;
00149     FOR_ALL_INDUSTRIES(i) {
00150       if (i->type == ind_index && i != current && (i->selected_layout == layout_filter || layout_filter == 0) && (!town_filter || i->town == current->town)) {
00151         closest_dist = min(closest_dist, DistanceManhattan(current->location.tile, i->location.tile));
00152         count++;
00153       }
00154     }
00155   }
00156 
00157   return count << 16 | GB(closest_dist, 0, 16);
00158 }
00159 
00160 /* virtual */ uint32 IndustriesScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const
00161 {
00162   if (this->ro->callback == CBID_INDUSTRY_LOCATION) {
00163     /* Variables available during construction check. */
00164 
00165     switch (variable) {
00166       case 0x80: return this->tile;
00167       case 0x81: return GB(this->tile, 8, 8);
00168 
00169       /* Pointer to the town the industry is associated with */
00170       case 0x82: return this->industry->town->index;
00171       case 0x83:
00172       case 0x84:
00173       case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00174 
00175       /* Number of the layout */
00176       case 0x86: return this->industry->selected_layout;
00177 
00178       /* Ground type */
00179       case 0x87: return GetTerrainType(this->tile);
00180 
00181       /* Town zone */
00182       case 0x88: return GetTownRadiusGroup(this->industry->town, this->tile);
00183 
00184       /* Manhattan distance of the closest town */
00185       case 0x89: return min(DistanceManhattan(this->industry->town->xy, this->tile), 255);
00186 
00187       /* Lowest height of the tile */
00188       case 0x8A: return Clamp(GetTileZ(this->tile) * (this->ro->grffile->grf_version >= 8 ? 1 : TILE_HEIGHT), 0, 0xFF);
00189 
00190       /* Distance to the nearest water/land tile */
00191       case 0x8B: return GetClosestWaterDistance(this->tile, (GetIndustrySpec(this->industry->type)->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00192 
00193       /* Square of Euclidian distance from town */
00194       case 0x8D: return min(DistanceSquare(this->industry->town->xy, this->tile), 65535);
00195 
00196       /* 32 random bits */
00197       case 0x8F: return this->random_bits;
00198     }
00199   }
00200 
00201   const IndustrySpec *indspec = GetIndustrySpec(this->type);
00202 
00203   if (this->industry == NULL) {
00204     DEBUG(grf, 1, "Unhandled variable 0x%X (no available industry) in callback 0x%x", variable, this->ro->callback);
00205 
00206     *available = false;
00207     return UINT_MAX;
00208   }
00209 
00210   switch (variable) {
00211     case 0x40:
00212     case 0x41:
00213     case 0x42: { // waiting cargo, but only if those two callback flags are set
00214       uint16 callback = indspec->callback_mask;
00215       if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
00216         if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {
00217           if (this->industry->prod_level == 0) return 0;
00218           return min(this->industry->incoming_cargo_waiting[variable - 0x40] / this->industry->prod_level, (uint16)0xFFFF);
00219         } else {
00220           return min(this->industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);
00221         }
00222       } else {
00223         return 0;
00224       }
00225     }
00226 
00227     /* Manhattan distance of closes dry/water tile */
00228     case 0x43:
00229       if (this->tile == INVALID_TILE) break;
00230       return GetClosestWaterDistance(this->tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00231 
00232     /* Layout number */
00233     case 0x44: return this->industry->selected_layout;
00234 
00235     /* Company info */
00236     case 0x45: {
00237       byte colours = 0;
00238       bool is_ai = false;
00239 
00240       const Company *c = Company::GetIfValid(this->industry->founder);
00241       if (c != NULL) {
00242         const Livery *l = &c->livery[LS_DEFAULT];
00243 
00244         is_ai = c->is_ai;
00245         colours = l->colour1 + l->colour2 * 16;
00246       }
00247 
00248       return this->industry->founder | (is_ai ? 0x10000 : 0) | (colours << 24);
00249     }
00250 
00251     case 0x46: return this->industry->construction_date; // Date when built - long format - (in days)
00252 
00253     /* Get industry ID at offset param */
00254     case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, this->industry->location.tile, false), this->industry, this->ro->grffile->grfid);
00255 
00256     /* Get random tile bits at offset param */
00257     case 0x61: {
00258       if (this->tile == INVALID_TILE) break;
00259       TileIndex tile = GetNearbyTile(parameter, this->tile, false);
00260       return this->industry->TileBelongsToIndustry(tile) ? GetIndustryRandomBits(tile) : 0;
00261     }
00262 
00263     /* Land info of nearby tiles */
00264     case 0x62:
00265       if (this->tile == INVALID_TILE) break;
00266       return GetNearbyIndustryTileInformation(parameter, this->tile, INVALID_INDUSTRY, false, this->ro->grffile->grf_version >= 8);
00267 
00268     /* Animation stage of nearby tiles */
00269     case 0x63: {
00270       if (this->tile == INVALID_TILE) break;
00271       TileIndex tile = GetNearbyTile(parameter, this->tile, false);
00272       if (this->industry->TileBelongsToIndustry(tile)) {
00273         return GetAnimationFrame(tile);
00274       }
00275       return 0xFFFFFFFF;
00276     }
00277 
00278     /* Distance of nearest industry of given type */
00279     case 0x64:
00280       if (this->tile == INVALID_TILE) break;
00281       return GetClosestIndustry(this->tile, MapNewGRFIndustryType(parameter, indspec->grf_prop.grffile->grfid), this->industry);
00282     /* Get town zone and Manhattan distance of closest town */
00283     case 0x65:
00284       if (this->tile == INVALID_TILE) break;
00285       return GetTownRadiusGroup(this->industry->town, this->tile) << 16 | min(DistanceManhattan(this->tile, this->industry->town->xy), 0xFFFF);
00286     /* Get square of Euclidian distance of closes town */
00287     case 0x66:
00288       if (this->tile == INVALID_TILE) break;
00289       return GetTownRadiusGroup(this->industry->town, this->tile) << 16 | min(DistanceSquare(this->tile, this->industry->town->xy), 0xFFFF);
00290 
00291     /* Count of industry, distance of closest instance
00292      * 68 is the same as 67, but with a filtering on selected layout */
00293     case 0x67:
00294     case 0x68: {
00295       byte layout_filter = 0;
00296       bool town_filter = false;
00297       if (variable == 0x68) {
00298         uint32 reg = GetRegister(0x101);
00299         layout_filter = GB(reg, 0, 8);
00300         town_filter = HasBit(reg, 8);
00301       }
00302       return GetCountAndDistanceOfClosestInstance(parameter, layout_filter, town_filter, this->industry);
00303     }
00304 
00305     /* Get a variable from the persistent storage */
00306     case 0x7C: return (this->industry->psa != NULL) ? this->industry->psa->GetValue(parameter) : 0;
00307 
00308     /* Industry structure access*/
00309     case 0x80: return this->industry->location.tile;
00310     case 0x81: return GB(this->industry->location.tile, 8, 8);
00311     /* Pointer to the town the industry is associated with */
00312     case 0x82: return this->industry->town->index;
00313     case 0x83:
00314     case 0x84:
00315     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00316     case 0x86: return this->industry->location.w;
00317     case 0x87: return this->industry->location.h;// xy dimensions
00318 
00319     case 0x88:
00320     case 0x89: return this->industry->produced_cargo[variable - 0x88];
00321     case 0x8A: return this->industry->produced_cargo_waiting[0];
00322     case 0x8B: return GB(this->industry->produced_cargo_waiting[0], 8, 8);
00323     case 0x8C: return this->industry->produced_cargo_waiting[1];
00324     case 0x8D: return GB(this->industry->produced_cargo_waiting[1], 8, 8);
00325     case 0x8E:
00326     case 0x8F: return this->industry->production_rate[variable - 0x8E];
00327     case 0x90:
00328     case 0x91:
00329     case 0x92: return this->industry->accepts_cargo[variable - 0x90];
00330     case 0x93: return this->industry->prod_level;
00331     /* amount of cargo produced so far THIS month. */
00332     case 0x94: return this->industry->this_month_production[0];
00333     case 0x95: return GB(this->industry->this_month_production[0], 8, 8);
00334     case 0x96: return this->industry->this_month_production[1];
00335     case 0x97: return GB(this->industry->this_month_production[1], 8, 8);
00336     /* amount of cargo transported so far THIS month. */
00337     case 0x98: return this->industry->this_month_transported[0];
00338     case 0x99: return GB(this->industry->this_month_transported[0], 8, 8);
00339     case 0x9A: return this->industry->this_month_transported[1];
00340     case 0x9B: return GB(this->industry->this_month_transported[1], 8, 8);
00341     /* fraction of cargo transported LAST month. */
00342     case 0x9C:
00343     case 0x9D: return this->industry->last_month_pct_transported[variable - 0x9C];
00344     /* amount of cargo produced LAST month. */
00345     case 0x9E: return this->industry->last_month_production[0];
00346     case 0x9F: return GB(this->industry->last_month_production[0], 8, 8);
00347     case 0xA0: return this->industry->last_month_production[1];
00348     case 0xA1: return GB(this->industry->last_month_production[1], 8, 8);
00349     /* amount of cargo transported last month. */
00350     case 0xA2: return this->industry->last_month_transported[0];
00351     case 0xA3: return GB(this->industry->last_month_transported[0], 8, 8);
00352     case 0xA4: return this->industry->last_month_transported[1];
00353     case 0xA5: return GB(this->industry->last_month_transported[1], 8, 8);
00354 
00355     case 0xA6: return this->industry->type;
00356     case 0xA7: return this->industry->founder;
00357     case 0xA8: return this->industry->random_colour;
00358     case 0xA9: return Clamp(this->industry->last_prod_year - ORIGINAL_BASE_YEAR, 0, 255);
00359     case 0xAA: return this->industry->counter;
00360     case 0xAB: return GB(this->industry->counter, 8, 8);
00361     case 0xAC: return this->industry->was_cargo_delivered;
00362 
00363     case 0xB0: return Clamp(this->industry->construction_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date when built since 1920 (in days)
00364     case 0xB3: return this->industry->construction_type; // Construction type
00365     case 0xB4: return Clamp(this->industry->last_cargo_accepted_at - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date last cargo accepted since 1920 (in days)
00366   }
00367 
00368   DEBUG(grf, 1, "Unhandled industry variable 0x%X", variable);
00369 
00370   *available = false;
00371   return UINT_MAX;
00372 }
00373 
00374 /* virtual */ uint32 IndustriesScopeResolver::GetRandomBits() const
00375 {
00376   return this->industry != NULL ? this->industry->random : 0;
00377 }
00378 
00379 /* virtual */ uint32 IndustriesScopeResolver::GetTriggers() const
00380 {
00381   return this->industry != NULL ? this->industry->random_triggers : 0;
00382 }
00383 
00384 /* virtual */ void IndustriesScopeResolver::SetTriggers(int triggers) const
00385 {
00386   assert(this->industry != NULL && this->industry->index != INVALID_INDUSTRY);
00387   this->industry->random_triggers = triggers;
00388 }
00389 
00390 /* virtual */ void IndustriesScopeResolver::StorePSA(uint pos, int32 value)
00391 {
00392   if (this->industry->index == INVALID_INDUSTRY) return;
00393 
00394   if (this->industry->psa == NULL) {
00395     /* There is no need to create a storage if the value is zero. */
00396     if (value == 0) return;
00397 
00398     /* Create storage on first modification. */
00399     const IndustrySpec *indsp = GetIndustrySpec(this->industry->type);
00400     uint32 grfid = (indsp->grf_prop.grffile != NULL) ? indsp->grf_prop.grffile->grfid : 0;
00401     assert(PersistentStorage::CanAllocateItem());
00402     this->industry->psa = new PersistentStorage(grfid);
00403   }
00404 
00405   this->industry->psa->StoreValue(pos, value);
00406 }
00407 
00413 static const GRFFile *GetGrffile(IndustryType type)
00414 {
00415   const IndustrySpec *indspec = GetIndustrySpec(type);
00416   return (indspec != NULL) ? indspec->grf_prop.grffile : NULL;
00417 }
00418 
00429 IndustriesResolverObject::IndustriesResolverObject(TileIndex tile, Industry *indus, IndustryType type, uint32 random_bits,
00430     CallbackID callback, uint32 callback_param1, uint32 callback_param2)
00431   : ResolverObject(GetGrffile(type), callback, callback_param1, callback_param2),
00432   industries_scope(this, tile, indus, type, random_bits),
00433   town_scope(NULL)
00434 {
00435 }
00436 
00437 IndustriesResolverObject::~IndustriesResolverObject()
00438 {
00439   delete this->town_scope;
00440 }
00441 
00446 TownScopeResolver *IndustriesResolverObject::GetTown()
00447 {
00448   if (this->town_scope == NULL) {
00449     Town *t = NULL;
00450     if (this->industries_scope.industry != NULL) {
00451       t = this->industries_scope.industry->town;
00452     } else if (this->industries_scope.tile != INVALID_TILE) {
00453       t = ClosestTownFromTile(this->industries_scope.tile, UINT_MAX);
00454     }
00455     if (t == NULL) return NULL;
00456     this->town_scope = new TownScopeResolver(this, t, this->industries_scope.industry->index == INVALID_INDUSTRY);
00457   }
00458   return this->town_scope;
00459 }
00460 
00469 IndustriesScopeResolver::IndustriesScopeResolver(ResolverObject *ro, TileIndex tile, Industry *industry, IndustryType type, uint32 random_bits)
00470   : ScopeResolver(ro)
00471 {
00472   this->tile = tile;
00473   this->industry = industry;
00474   this->type = type;
00475   this->random_bits = random_bits;
00476 }
00477 
00488 uint16 GetIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, Industry *industry, IndustryType type, TileIndex tile)
00489 {
00490   IndustriesResolverObject object(tile, industry, type, 0, callback, param1, param2);
00491   const SpriteGroup *group = SpriteGroup::Resolve(GetIndustrySpec(type)->grf_prop.spritegroup[0], &object);
00492   if (group == NULL) return CALLBACK_FAILED;
00493 
00494   return group->GetCallbackResult();
00495 }
00496 
00508 CommandCost CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uint layout, uint32 seed, uint16 initial_random_bits, Owner founder, IndustryAvailabilityCallType creation_type)
00509 {
00510   const IndustrySpec *indspec = GetIndustrySpec(type);
00511 
00512   Industry ind;
00513   ind.index = INVALID_INDUSTRY;
00514   ind.location.tile = tile;
00515   ind.location.w = 0; // important to mark the industry invalid
00516   ind.type = type;
00517   ind.selected_layout = layout;
00518   ind.town = ClosestTownFromTile(tile, UINT_MAX);
00519   ind.random = initial_random_bits;
00520   ind.founder = founder;
00521   ind.psa = NULL;
00522 
00523   IndustriesResolverObject object(tile, &ind, type, seed, CBID_INDUSTRY_LOCATION, 0, creation_type);
00524   const SpriteGroup *group = SpriteGroup::Resolve(GetIndustrySpec(type)->grf_prop.spritegroup[0], &object);
00525 
00526   /* Unlike the "normal" cases, not having a valid result means we allow
00527    * the building of the industry, as that's how it's done in TTDP. */
00528   if (group == NULL) return CommandCost();
00529   uint16 result = group->GetCallbackResult();
00530   if (result == CALLBACK_FAILED) return CommandCost();
00531 
00532   return GetErrorMessageFromLocationCallbackResult(result, indspec->grf_prop.grffile->grfid, STR_ERROR_SITE_UNSUITABLE);
00533 }
00534 
00541 uint32 GetIndustryProbabilityCallback(IndustryType type, IndustryAvailabilityCallType creation_type, uint32 default_prob)
00542 {
00543   const IndustrySpec *indspec = GetIndustrySpec(type);
00544 
00545   if (HasBit(indspec->callback_mask, CBM_IND_PROBABILITY)) {
00546     uint16 res = GetIndustryCallback(CBID_INDUSTRY_PROBABILITY, 0, creation_type, NULL, type, INVALID_TILE);
00547     if (res != CALLBACK_FAILED) {
00548       if (indspec->grf_prop.grffile->grf_version < 8) {
00549         /* Disallow if result != 0 */
00550         if (res != 0) default_prob = 0;
00551       } else {
00552         /* Use returned probability. 0x100 to use default */
00553         if (res < 0x100) {
00554           default_prob = res;
00555         } else if (res > 0x100) {
00556           ErrorUnknownCallbackResult(indspec->grf_prop.grffile->grfid, CBID_INDUSTRY_PROBABILITY, res);
00557         }
00558       }
00559     }
00560   }
00561   return default_prob;
00562 }
00563 
00564 static int32 DerefIndProd(int field, bool use_register)
00565 {
00566   return use_register ? (int32)GetRegister(field) : field;
00567 }
00568 
00574 void IndustryProductionCallback(Industry *ind, int reason)
00575 {
00576   const IndustrySpec *spec = GetIndustrySpec(ind->type);
00577   IndustriesResolverObject object(ind->location.tile, ind, ind->type);
00578   if ((spec->behaviour & INDUSTRYBEH_PRODCALLBACK_RANDOM) != 0) object.callback_param1 = Random();
00579   int multiplier = 1;
00580   if ((spec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) multiplier = ind->prod_level;
00581   object.callback_param2 = reason;
00582 
00583   for (uint loop = 0;; loop++) {
00584     /* limit the number of calls to break infinite loops.
00585      * 'loop' is provided as 16 bits to the newgrf, so abort when those are exceeded. */
00586     if (loop >= 0x10000) {
00587       /* display error message */
00588       SetDParamStr(0, spec->grf_prop.grffile->filename);
00589       SetDParam(1, spec->name);
00590       ShowErrorMessage(STR_NEWGRF_BUGGY, STR_NEWGRF_BUGGY_ENDLESS_PRODUCTION_CALLBACK, WL_WARNING);
00591 
00592       /* abort the function early, this error isn't critical and will allow the game to continue to run */
00593       break;
00594     }
00595 
00596     SB(object.callback_param2, 8, 16, loop);
00597     const SpriteGroup *tgroup = SpriteGroup::Resolve(spec->grf_prop.spritegroup[0], &object);
00598     if (tgroup == NULL || tgroup->type != SGT_INDUSTRY_PRODUCTION) break;
00599     const IndustryProductionSpriteGroup *group = (const IndustryProductionSpriteGroup *)tgroup;
00600 
00601     bool deref = (group->version == 1);
00602 
00603     for (uint i = 0; i < 3; i++) {
00604       ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->subtract_input[i], deref) * multiplier, 0, 0xFFFF);
00605     }
00606     for (uint i = 0; i < 2; i++) {
00607       ind->produced_cargo_waiting[i] = Clamp(ind->produced_cargo_waiting[i] + max(DerefIndProd(group->add_output[i], deref), 0) * multiplier, 0, 0xFFFF);
00608     }
00609 
00610     int32 again = DerefIndProd(group->again, deref);
00611     if (again == 0) break;
00612 
00613     SB(object.callback_param2, 24, 8, again);
00614   }
00615 
00616   SetWindowDirty(WC_INDUSTRY_VIEW, ind->index);
00617 }
00618 
00626 bool IndustryTemporarilyRefusesCargo(Industry *ind, CargoID cargo_type)
00627 {
00628   assert(cargo_type == ind->accepts_cargo[0] || cargo_type == ind->accepts_cargo[1] || cargo_type == ind->accepts_cargo[2]);
00629 
00630   const IndustrySpec *indspec = GetIndustrySpec(ind->type);
00631   if (HasBit(indspec->callback_mask, CBM_IND_REFUSE_CARGO)) {
00632     uint16 res = GetIndustryCallback(CBID_INDUSTRY_REFUSE_CARGO,
00633         0, indspec->grf_prop.grffile->cargo_map[cargo_type],
00634         ind, ind->type, ind->location.tile);
00635     if (res != CALLBACK_FAILED) return !ConvertBooleanCallback(indspec->grf_prop.grffile, CBID_INDUSTRY_REFUSE_CARGO, res);
00636   }
00637   return false;
00638 }