# 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.h"
    00016 #include "newgrf_industries.h"
    00017 #include "newgrf_text.h"
    00018 #include "newgrf_town.h"
    00019 #include "newgrf_cargo.h"
    00020 #include "window_func.h"
    00021 #include "town.h"
    00022 #include "company_base.h"
    00023 #include "command_func.h"
    00024 #include "gui.h"
    00025 #include "strings_func.h"
    00026 #include "core/random_func.hpp"
    00027
    00028 #include "table/strings.h"
    00029
    00030 static uint32 _industry_creation_random_bits;
    00031
    00032 /* Since the industry IDs defined by the GRF file don't necessarily correlate
    00033  * to those used by the game, the IDs used for overriding old industries must be
    00034  * translated when the idustry spec is set. */
    00035 IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);
    00036 IndustryTileOverrideManager _industile_mngr(NEW_INDUSTRYTILEOFFSET, NUM_INDUSTRYTILES, INVALID_INDUSTRYTILE);
    00037
    00044 IndustryType MapNewGRFIndustryType(IndustryType grf_type, uint32 grf_id)
    00045 {
    00046   if (grf_type == IT_INVALID) return IT_INVALID;
    00047   if (!HasBit(grf_type, 7)) return GB(grf_type, 0, 6);
    00048
    00049   return _industry_mngr.GetID(GB(grf_type, 0, 6), grf_id);
    00050 }
    00051
    00060 uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i, uint32 cur_grfid)
    00061 {
    00062   if (!IsTileType(tile, MP_INDUSTRY) || GetIndustryIndex(tile) != i->index) {
    00063     /* No industry and/or the tile does not have the same industry as the one we match it with */
    00064     return 0xFFFF;
    00065   }
    00066
    00067   IndustryGfx gfx = GetCleanIndustryGfx(tile);
    00068   const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
    00069
    00070   if (gfx < NEW_INDUSTRYTILEOFFSET) { // Does it belongs to an old type?
    00071     /* It is an old tile.  We have to see if it's been overriden */
    00072     if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) { // has it been overridden?
    00073       return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
    00074     }
    00075     /* Overriden */
    00076     const IndustryTileSpec *tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
    00077
    00078     if (tile_ovr->grf_prop.grffile->grfid == cur_grfid) {
    00079       return tile_ovr->grf_prop.local_id; // same grf file
    00080     } else {
    00081       return 0xFFFE; // not the same grf file
    00082     }
    00083   }
    00084   /* Not an 'old type' tile */
    00085   if (indtsp->grf_prop.spritegroup[0] != NULL) { // tile has a spritegroup ?
    00086     if (indtsp->grf_prop.grffile->grfid == cur_grfid) { // same industry, same grf ?
    00087       return indtsp->grf_prop.local_id;
    00088     } else {
    00089       return 0xFFFE; // Defined in another grf file
    00090     }
    00091   }
    00092   /* The tile has no spritegroup */
    00093   return 0xFF << 8 | indtsp->grf_prop.subst_id; // so just give him the substitute
    00094 }
    00095
    00096 static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Industry *current)
    00097 {
    00098   uint32 best_dist = UINT32_MAX;
    00099   const Industry *i;
    00100   FOR_ALL_INDUSTRIES(i) {
    00101     if (i->type != type || i == current) continue;
    00102
    00103     best_dist = min(best_dist, DistanceManhattan(tile, i->location.tile));
    00104   }
    00105
    00106   return best_dist;
    00107 }
    00108
    00119 static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, bool town_filter, const Industry *current)
    00120 {
    00121   uint32 GrfID = GetRegister(0x100);
    00122   IndustryType ind_index;
    00123   uint32 closest_dist = UINT32_MAX;
    00124   byte count = 0;
    00125
    00126   /* Determine what will be the industry type to look for */
    00127   switch (GrfID) {
    00128     case 0:  // this is a default industry type
    00129       ind_index = param_setID;
    00130       break;
    00131
    00132     case 0xFFFFFFFF: // current grf
    00133       GrfID = GetIndustrySpec(current->type)->grf_prop.grffile->grfid;
    00134       /* FALL THROUGH */
    00135
    00136     default: // use the grfid specified in register 100h
    00137       SetBit(param_setID, 7); // bit 7 means it is not an old type
    00138       ind_index = MapNewGRFIndustryType(param_setID, GrfID);
    00139       break;
    00140   }
    00141
    00142   /* If the industry type is invalid, there is none and the closest is far away. */
    00143   if (ind_index >= NUM_INDUSTRYTYPES) return 0 | 0xFFFF;
    00144
    00145   if (layout_filter == 0 && !town_filter) {
    00146     /* If the filter is 0, it could be because none was specified as well as being really a 0.
    00147      * In either case, just do the regular var67 */
    00148     closest_dist = GetClosestIndustry(current->location.tile, ind_index, current);
    00149     count = min(Industry::GetIndustryTypeCount(ind_index), UINT8_MAX); // clamp to 8 bit
    00150   } else {
    00151     /* Count only those who match the same industry type and layout filter
    00152      * Unfortunately, we have to do it manually */
    00153     const Industry *i;
    00154     FOR_ALL_INDUSTRIES(i) {
    00155       if (i->type == ind_index && i != current && (i->selected_layout == layout_filter || layout_filter == 0) && (!town_filter || i->town == current->town)) {
    00156         closest_dist = min(closest_dist, DistanceManhattan(current->location.tile, i->location.tile));
    00157         count++;
    00158       }
    00159     }
    00160   }
    00161
    00162   return count << 16 | GB(closest_dist, 0, 16);
    00163 }
    00164
    00173 uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
    00174 {
    00175   const Industry *industry = object->u.industry.ind;
    00176   TileIndex tile = object->u.industry.tile;
    00177   IndustryType type = object->u.industry.type;
    00178   const IndustrySpec *indspec = GetIndustrySpec(type);
    00179
    00180   /* Shall the variable get resolved in parent scope and are we not yet in parent scope? */
    00181   if (object->u.industry.gfx == INVALID_INDUSTRYTILE && object->scope == VSG_SCOPE_PARENT) {
    00182     /* Pass the request on to the town of the industry */
    00183     const Town *t;
    00184
    00185     if (industry != NULL) {
    00186       t = industry->town;
    00187     } else if (tile != INVALID_TILE) {
    00188       t = ClosestTownFromTile(tile, UINT_MAX);
    00189     } else {
    00190       *available = false;
    00191       return UINT_MAX;
    00192     }
    00193
    00194     return TownGetVariable(variable, parameter, available, t);
    00195   }
    00196
    00197   if (industry == NULL) {
    00198     DEBUG(grf, 1, "Unhandled variable 0x%X (no available industry) in callback 0x%x", variable, object->callback);
    00199
    00200     *available = false;
    00201     return UINT_MAX;
    00202   }
    00203
    00204   switch (variable) {
    00205     case 0x40:
    00206     case 0x41:
    00207     case 0x42: { // waiting cargo, but only if those two callback flags are set
    00208       uint16 callback = indspec->callback_mask;
    00209       if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
    00210         if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {
    00211           if (industry->prod_level == 0) return 0;
    00212           return min(industry->incoming_cargo_waiting[variable - 0x40] / industry->prod_level, (uint16)0xFFFF);
    00213         } else {
    00214           return min(industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);
    00215         }
    00216       } else {
    00217         return 0;
    00218       }
    00219     }
    00220
    00221     /* Manhattan distance of closes dry/water tile */
    00222     case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
    00223
    00224     /* Layout number */
    00225     case 0x44: return industry->selected_layout;
    00226
    00227     /* Company info */
    00228     case 0x45: {
    00229       byte colours = 0;
    00230       bool is_ai = false;
    00231
    00232       const Company *c = Company::GetIfValid(industry->founder);
    00233       if (c != NULL) {
    00234         const Livery *l = &c->livery[LS_DEFAULT];
    00235
    00236         is_ai = c->is_ai;
    00237         colours = l->colour1 + l->colour2 * 16;
    00238       }
    00239
    00240       return industry->founder | (is_ai ? 0x10000 : 0) | (colours << 24);
    00241     }
    00242
    00243     case 0x46: return industry->construction_date; // Date when built - long format - (in days)
    00244
    00245     /* Get industry ID at offset param */
    00246     case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, industry->location.tile, false), industry, object->grffile->grfid);
    00247
    00248     /* Get random tile bits at offset param */
    00249     case 0x61:
    00250       tile = GetNearbyTile(parameter, tile, false);
    00251       return (IsTileType(tile, MP_INDUSTRY) && Industry::GetByTile(tile) == industry) ? GetIndustryRandomBits(tile) : 0;
    00252
    00253     /* Land info of nearby tiles */
    00254     case 0x62: return GetNearbyIndustryTileInformation(parameter, tile, INVALID_INDUSTRY, false);
    00255
    00256     /* Animation stage of nearby tiles */
    00257     case 0x63:
    00258       tile = GetNearbyTile(parameter, tile, false);
    00259       if (IsTileType(tile, MP_INDUSTRY) && Industry::GetByTile(tile) == industry) {
    00260         return GetAnimationFrame(tile);
    00261       }
    00262       return 0xFFFFFFFF;
    00263
    00264     /* Distance of nearest industry of given type */
    00265     case 0x64: return GetClosestIndustry(tile, MapNewGRFIndustryType(parameter, indspec->grf_prop.grffile->grfid), industry);
    00266     /* Get town zone and Manhattan distance of closest town */
    00267     case 0x65: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceManhattan(tile, industry->town->xy), 0xFFFF);
    00268     /* Get square of Euclidian distance of closes town */
    00269     case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);
    00270
    00271     /* Count of industry, distance of closest instance
    00272      * 68 is the same as 67, but with a filtering on selected layout */
    00273     case 0x67:
    00274     case 0x68: {
    00275       byte layout_filter = 0;
    00276       bool town_filter = false;
    00277       if (variable == 0x68) {
    00278         uint32 reg = GetRegister(0x101);
    00279         layout_filter = GB(reg, 0, 8);
    00280         town_filter = HasBit(reg, 8);
    00281       }
    00282       return GetCountAndDistanceOfClosestInstance(parameter, layout_filter, town_filter, industry);
    00283     }
    00284
    00285     /* Get a variable from the persistent storage */
    00286     case 0x7C: return industry->psa.Get(parameter);
    00287
    00288     /* Industry structure access*/
    00289     case 0x80: return industry->location.tile;
    00290     case 0x81: return GB(industry->location.tile, 8, 8);
    00291     /* Pointer to the town the industry is associated with */
    00292     case 0x82: return industry->town->index;
    00293     case 0x83:
    00294     case 0x84:
    00295     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
    00296     case 0x86: return industry->location.w;
    00297     case 0x87: return industry->location.h;// xy dimensions
    00298
    00299     case 0x88:
    00300     case 0x89: return industry->produced_cargo[variable - 0x88];
    00301     case 0x8A: return industry->produced_cargo_waiting[0];
    00302     case 0x8B: return GB(industry->produced_cargo_waiting[0], 8, 8);
    00303     case 0x8C: return industry->produced_cargo_waiting[1];
    00304     case 0x8D: return GB(industry->produced_cargo_waiting[1], 8, 8);
    00305     case 0x8E:
    00306     case 0x8F: return industry->production_rate[variable - 0x8E];
    00307     case 0x90:
    00308     case 0x91:
    00309     case 0x92: return industry->accepts_cargo[variable - 0x90];
    00310     case 0x93: return industry->prod_level;
    00311     /* amount of cargo produced so far THIS month. */
    00312     case 0x94: return industry->this_month_production[0];
    00313     case 0x95: return GB(industry->this_month_production[0], 8, 8);
    00314     case 0x96: return industry->this_month_production[1];
    00315     case 0x97: return GB(industry->this_month_production[1], 8, 8);
    00316     /* amount of cargo transported so far THIS month. */
    00317     case 0x98: return industry->this_month_transported[0];
    00318     case 0x99: return GB(industry->this_month_transported[0], 8, 8);
    00319     case 0x9A: return industry->this_month_transported[1];
    00320     case 0x9B: return GB(industry->this_month_transported[1], 8, 8);
    00321     /* fraction of cargo transported LAST month. */
    00322     case 0x9C:
    00323     case 0x9D: return industry->last_month_pct_transported[variable - 0x9C];
    00324     /* amount of cargo produced LAST month. */
    00325     case 0x9E: return industry->last_month_production[0];
    00326     case 0x9F: return GB(industry->last_month_production[0], 8, 8);
    00327     case 0xA0: return industry->last_month_production[1];
    00328     case 0xA1: return GB(industry->last_month_production[1], 8, 8);
    00329     /* amount of cargo transported last month. */
    00330     case 0xA2: return industry->last_month_transported[0];
    00331     case 0xA3: return GB(industry->last_month_transported[0], 8, 8);
    00332     case 0xA4: return industry->last_month_transported[1];
    00333     case 0xA5: return GB(industry->last_month_transported[1], 8, 8);
    00334
    00335     case 0xA6: return industry->type;
    00336     case 0xA7: return industry->founder;
    00337     case 0xA8: return industry->random_colour;
    00338     case 0xA9: return Clamp(industry->last_prod_year - ORIGINAL_BASE_YEAR, 0, 255);
    00339     case 0xAA: return industry->counter;
    00340     case 0xAB: return GB(industry->counter, 8, 8);
    00341     case 0xAC: return industry->was_cargo_delivered;
    00342
    00343     case 0xB0: return Clamp(industry->construction_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date when built since 1920 (in days)
    00344     case 0xB3: return industry->construction_type; // Construction type
    00345     case 0xB4: return Clamp(industry->last_cargo_accepted_at - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date last cargo accepted since 1920 (in days)
    00346   }
    00347
    00348   DEBUG(grf, 1, "Unhandled industry variable 0x%X", variable);
    00349
    00350   *available = false;
    00351   return UINT_MAX;
    00352 }
    00353
    00354 static const SpriteGroup *IndustryResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
    00355 {
    00356   /* IndustryTile do not have 'real' groups */
    00357   return NULL;
    00358 }
    00359
    00360 static uint32 IndustryGetRandomBits(const ResolverObject *object)
    00361 {
    00362   const Industry *ind = object->u.industry.ind;
    00363   return ind != NULL ? ind->random: 0;
    00364 }
    00365
    00366 static uint32 IndustryGetTriggers(const ResolverObject *object)
    00367 {
    00368   const Industry *ind = object->u.industry.ind;
    00369   return ind != NULL ? ind->random_triggers : 0;
    00370 }
    00371
    00372 static void IndustrySetTriggers(const ResolverObject *object, int triggers)
    00373 {
    00374   Industry *ind = object->u.industry.ind;
    00375   assert(ind != NULL && ind->index != INVALID_INDUSTRY);
    00376   ind->random_triggers = triggers;
    00377 }
    00378
    00379 static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *indus, IndustryType type)
    00380 {
    00381   res->GetRandomBits = IndustryGetRandomBits;
    00382   res->GetTriggers   = IndustryGetTriggers;
    00383   res->SetTriggers   = IndustrySetTriggers;
    00384   res->GetVariable   = IndustryGetVariable;
    00385   res->ResolveReal   = IndustryResolveReal;
    00386
    00387   res->psa             = &indus->psa;
    00388   res->u.industry.tile = tile;
    00389   res->u.industry.ind  = indus;
    00390   res->u.industry.gfx  = INVALID_INDUSTRYTILE;
    00391   res->u.industry.type = type;
    00392
    00393   res->callback        = CBID_NO_CALLBACK;
    00394   res->callback_param1 = 0;
    00395   res->callback_param2 = 0;
    00396   res->last_value      = 0;
    00397   res->trigger         = 0;
    00398   res->reseed          = 0;
    00399   res->count           = 0;
    00400
    00401   const IndustrySpec *indspec = GetIndustrySpec(type);
    00402   res->grffile         = (indspec != NULL ? indspec->grf_prop.grffile : NULL);
    00403 }
    00404
    00415 uint16 GetIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, Industry *industry, IndustryType type, TileIndex tile)
    00416 {
    00417   ResolverObject object;
    00418   const SpriteGroup *group;
    00419
    00420   NewIndustryResolver(&object, tile, industry, type);
    00421   object.callback = callback;
    00422   object.callback_param1 = param1;
    00423   object.callback_param2 = param2;
    00424
    00425   group = SpriteGroup::Resolve(GetIndustrySpec(type)->grf_prop.spritegroup[0], &object);
    00426   if (group == NULL) return CALLBACK_FAILED;
    00427
    00428   return group->GetCallbackResult();
    00429 }
    00430
    00431 uint32 IndustryLocationGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
    00432 {
    00433   const Industry *industry = object->u.industry.ind;
    00434   TileIndex tile = object->u.industry.tile;
    00435
    00436   if (object->scope == VSG_SCOPE_PARENT) {
    00437     return TownGetVariable(variable, parameter, available, industry->town);
    00438   }
    00439
    00440   switch (variable) {
    00441     case 0x80: return tile;
    00442     case 0x81: return GB(tile, 8, 8);
    00443
    00444     /* Pointer to the town the industry is associated with */
    00445     case 0x82: return industry->town->index;
    00446     case 0x83:
    00447     case 0x84:
    00448     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
    00449
    00450     /* Number of the layout */
    00451     case 0x86: return industry->selected_layout;
    00452
    00453     /* Ground type */
    00454     case 0x87: return GetTerrainType(tile);
    00455
    00456     /* Town zone */
    00457     case 0x88: return GetTownRadiusGroup(industry->town, tile);
    00458
    00459     /* Manhattan distance of the closest town */
    00460     case 0x89: return min(DistanceManhattan(industry->town->xy, tile), 255);
    00461
    00462     /* Lowest height of the tile */
    00463     case 0x8A: return GetTileZ(tile);
    00464
    00465     /* Distance to the nearest water/land tile */
    00466     case 0x8B: return GetClosestWaterDistance(tile, (GetIndustrySpec(industry->type)->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
    00467
    00468     /* Square of Euclidian distance from town */
    00469     case 0x8D: return min(DistanceSquare(industry->town->xy, tile), 65535);
    00470
    00471     /* 32 random bits */
    00472     case 0x8F: return _industry_creation_random_bits;
    00473   }
    00474
    00475   /* None of the special ones, so try the general ones */
    00476   return IndustryGetVariable(object, variable, parameter, available);
    00477 }
    00478
    00490 CommandCost CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uint layout, uint32 seed, uint16 initial_random_bits, Owner founder, IndustryAvailabilityCallType creation_type)
    00491 {
    00492   const IndustrySpec *indspec = GetIndustrySpec(type);
    00493
    00494   ResolverObject object;
    00495   const SpriteGroup *group;
    00496
    00497   Industry ind;
    00498   ind.index = INVALID_INDUSTRY;
    00499   ind.location.tile = tile;
    00500   ind.location.w = 0; // important to mark the industry invalid
    00501   ind.type = type;
    00502   ind.selected_layout = layout;
    00503   ind.town = ClosestTownFromTile(tile, UINT_MAX);
    00504   ind.random = initial_random_bits;
    00505   ind.founder = founder;
    00506
    00507   NewIndustryResolver(&object, tile, &ind, type);
    00508   object.GetVariable = IndustryLocationGetVariable;
    00509   object.callback = CBID_INDUSTRY_LOCATION;
    00510   object.callback_param2 = creation_type;
    00511   _industry_creation_random_bits = seed;
    00512
    00513   group = SpriteGroup::Resolve(GetIndustrySpec(type)->grf_prop.spritegroup[0], &object);
    00514
    00515   /* Unlike the "normal" cases, not having a valid result means we allow
    00516    * the building of the industry, as that's how it's done in TTDP. */
    00517   if (group == NULL) return CommandCost();
    00518   uint16 result = group->GetCallbackResult();
    00519   if (result == 0x400 || result == CALLBACK_FAILED) return CommandCost();
    00520
    00521   /* Copy some parameters from the registers to the error message text ref. stack */
    00522   SwitchToErrorRefStack();
    00523   PrepareTextRefStackUsage(4);
    00524   SwitchToNormalRefStack();
    00525
    00526   switch (result) {
    00527     case 0x401: return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    00528     case 0x402: return_cmd_error(STR_ERROR_CAN_ONLY_BE_BUILT_IN_RAINFOREST);
    00529     case 0x403: return_cmd_error(STR_ERROR_CAN_ONLY_BE_BUILT_IN_DESERT);
    00530     default:    return_cmd_error(GetGRFStringID(indspec->grf_prop.grffile->grfid, 0xD000 + result));
    00531   }
    00532   NOT_REACHED();
    00533 }
    00534
    00541 bool CheckIfCallBackAllowsAvailability(IndustryType type, IndustryAvailabilityCallType creation_type)
    00542 {
    00543   const IndustrySpec *indspec = GetIndustrySpec(type);
    00544
    00545   if (HasBit(indspec->callback_mask, CBM_IND_AVAILABLE)) {
    00546     uint16 res = GetIndustryCallback(CBID_INDUSTRY_AVAILABLE, 0, creation_type, NULL, type, INVALID_TILE);
    00547     if (res != CALLBACK_FAILED) {
    00548       return (res == 0);
    00549     }
    00550   }
    00551   return true;
    00552 }
    00553
    00554 static int32 DerefIndProd(int field, bool use_register)
    00555 {
    00556   return use_register ? (int32)GetRegister(field) : field;
    00557 }
    00558
    00564 void IndustryProductionCallback(Industry *ind, int reason)
    00565 {
    00566   const IndustrySpec *spec = GetIndustrySpec(ind->type);
    00567   ResolverObject object;
    00568   NewIndustryResolver(&object, ind->location.tile, ind, ind->type);
    00569   if ((spec->behaviour & INDUSTRYBEH_PRODCALLBACK_RANDOM) != 0) object.callback_param1 = Random();
    00570   int multiplier = 1;
    00571   if ((spec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) multiplier = ind->prod_level;
    00572   object.callback_param2 = reason;
    00573
    00574   for (uint loop = 0;; loop++) {
    00575     /* limit the number of calls to break infinite loops.
    00576      * 'loop' is provided as 16 bits to the newgrf, so abort when those are exceeded. */
    00577     if (loop >= 0x10000) {
    00578       /* display error message */
    00579       SetDParamStr(0, spec->grf_prop.grffile->filename);
    00580       SetDParam(1, spec->name);
    00581       ShowErrorMessage(STR_NEWGRF_BUGGY, STR_NEWGRF_BUGGY_ENDLESS_PRODUCTION_CALLBACK, WL_WARNING);
    00582
    00583       /* abort the function early, this error isn't critical and will allow the game to continue to run */
    00584       break;
    00585     }
    00586
    00587     SB(object.callback_param2, 8, 16, loop);
    00588     const SpriteGroup *tgroup = SpriteGroup::Resolve(spec->grf_prop.spritegroup[0], &object);
    00589     if (tgroup == NULL || tgroup->type != SGT_INDUSTRY_PRODUCTION) break;
    00590     const IndustryProductionSpriteGroup *group = (const IndustryProductionSpriteGroup *)tgroup;
    00591
    00592     bool deref = (group->version == 1);
    00593
    00594     for (uint i = 0; i < 3; i++) {
    00595       ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->subtract_input[i], deref) * multiplier, 0, 0xFFFF);
    00596     }
    00597     for (uint i = 0; i < 2; i++) {
    00598       ind->produced_cargo_waiting[i] = Clamp(ind->produced_cargo_waiting[i] + max(DerefIndProd(group->add_output[i], deref), 0) * multiplier, 0, 0xFFFF);
    00599     }
    00600
    00601     int32 again = DerefIndProd(group->again, deref);
    00602     if (again == 0) break;
    00603
    00604     SB(object.callback_param2, 24, 8, again);
    00605   }
    00606
    00607   SetWindowDirty(WC_INDUSTRY_VIEW, ind->index);
    00608 }
    00609
    00615 void GetIndustryResolver(ResolverObject *ro, uint index)
    00616 {
    00617   Industry *i = Industry::Get(index);
    00618   NewIndustryResolver(ro, i->location.tile, i, i->type);
    00619 }
    00620
    00628 bool IndustryTemporarilyRefusesCargo(Industry *ind, CargoID cargo_type)
    00629 {
    00630   assert(cargo_type == ind->accepts_cargo[0] || cargo_type == ind->accepts_cargo[1] || cargo_type == ind->accepts_cargo[2]);
    00631
    00632   const IndustrySpec *indspec = GetIndustrySpec(ind->type);
    00633   if (HasBit(indspec->callback_mask, CBM_IND_REFUSE_CARGO)) {
    00634     uint16 res = GetIndustryCallback(CBID_INDUSTRY_REFUSE_CARGO,
    00635         0, GetReverseCargoTranslation(cargo_type, indspec->grf_prop.grffile),
    00636         ind, ind->type, ind->location.tile);
    00637     return res == 0;
    00638   }
    00639   return false;
    00640 }