newgrf_industries.cpp

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00001 /* $Id: newgrf_industries.cpp 15718 2009-03-15 00:32:18Z rubidium $ */
00002 
00005 #include "stdafx.h"
00006 #include "debug.h"
00007 #include "tile_type.h"
00008 #include "strings_type.h"
00009 #include "company_type.h"
00010 #include "industry_map.h"
00011 #include "newgrf.h"
00012 #include "newgrf_industries.h"
00013 #include "newgrf_commons.h"
00014 #include "newgrf_text.h"
00015 #include "newgrf_town.h"
00016 #include "window_func.h"
00017 #include "town.h"
00018 #include "company_base.h"
00019 #include "command_func.h"
00020 
00021 #include "table/strings.h"
00022 
00023 static uint32 _industry_creation_random_bits;
00024 
00025 /* Since the industry IDs defined by the GRF file don't necessarily correlate
00026  * to those used by the game, the IDs used for overriding old industries must be
00027  * translated when the idustry spec is set. */
00028 IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);
00029 IndustryTileOverrideManager _industile_mngr(NEW_INDUSTRYTILEOFFSET, NUM_INDUSTRYTILES, INVALID_INDUSTRYTILE);
00030 
00031 IndustryType MapNewGRFIndustryType(IndustryType grf_type, uint32 grf_id)
00032 {
00033   if (grf_type == IT_INVALID) return IT_INVALID;
00034   if (!HasBit(grf_type, 7)) return GB(grf_type, 0, 6);
00035 
00036   return _industry_mngr.GetID(GB(grf_type, 0, 6), grf_id);
00037 }
00038 
00046 static uint GetClosestWaterDistance(TileIndex tile, bool water)
00047 {
00048   if (IsTileType(tile, MP_WATER) == water) return 0;
00049 
00050   uint max_dist = water ? 0x7F : 0x200;
00051 
00052   int x = TileX(tile);
00053   int y = TileY(tile);
00054 
00055   uint max_x = MapMaxX();
00056   uint max_y = MapMaxY();
00057   uint min_xy = _settings_game.construction.freeform_edges ? 1 : 0;
00058 
00059   /* go in a 'spiral' with increasing manhattan distance in each iteration */
00060   for (uint dist = 1; dist < max_dist; dist++) {
00061     /* next 'diameter' */
00062     y--;
00063 
00064     /* going counter-clockwise around this square */
00065     for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
00066       static const int8 ddx[DIAGDIR_END] = { -1,  1,  1, -1};
00067       static const int8 ddy[DIAGDIR_END] = {  1,  1, -1, -1};
00068 
00069       int dx = ddx[dir];
00070       int dy = ddy[dir];
00071 
00072       /* each side of this square has length 'dist' */
00073       for (uint a = 0; a < dist; a++) {
00074         /* MP_VOID tiles are not checked (interval is [min; max) for IsInsideMM())*/
00075         if (IsInsideMM(x, min_xy, max_x) && IsInsideMM(y, min_xy, max_y)) {
00076           TileIndex t = TileXY(x, y);
00077           if (IsTileType(t, MP_WATER) == water) return dist;
00078         }
00079         x += dx;
00080         y += dy;
00081       }
00082     }
00083   }
00084 
00085   if (!water) {
00086     /* no land found - is this a water-only map? */
00087     for (TileIndex t = 0; t < MapSize(); t++) {
00088       if (!IsTileType(t, MP_VOID) && !IsTileType(t, MP_WATER)) return 0x1FF;
00089     }
00090   }
00091 
00092   return max_dist;
00093 }
00094 
00100 uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i)
00101 {
00102   if (!IsTileType(tile, MP_INDUSTRY) || GetIndustryIndex(tile) != i->index) {
00103     /* No industry and/or the tile does not have the same industry as the one we match it with */
00104     return 0xFFFF;
00105   }
00106 
00107   IndustryGfx gfx = GetCleanIndustryGfx(tile);
00108   const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
00109   const IndustrySpec *indold = GetIndustrySpec(i->type);
00110 
00111   if (gfx < NEW_INDUSTRYOFFSET) { // Does it belongs to an old type?
00112     /* It is an old tile.  We have to see if it's been overriden */
00113     if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) { // has it been overridden?
00114       return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
00115     }
00116     /* Not overriden */
00117     const IndustryTileSpec *tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
00118 
00119     if (tile_ovr->grf_prop.grffile->grfid == indold->grf_prop.grffile->grfid) {
00120       return tile_ovr->grf_prop.local_id; // same grf file
00121     } else {
00122       return 0xFFFE; // not the same grf file
00123     }
00124   }
00125   /* Not an 'old type' tile */
00126   if (indtsp->grf_prop.spritegroup != NULL) { // tile has a spritegroup ?
00127     if (indtsp->grf_prop.grffile->grfid == indold->grf_prop.grffile->grfid) { // same industry, same grf ?
00128       return indtsp->grf_prop.local_id;
00129     } else {
00130       return 0xFFFE; // Defined in another grf file
00131     }
00132   }
00133   /* The tile has no spritegroup */
00134   return 0xFF << 8 | indtsp->grf_prop.subst_id; // so just give him the substitute
00135 }
00136 
00137 static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Industry *current)
00138 {
00139   uint32 best_dist = UINT32_MAX;
00140   const Industry *i;
00141   FOR_ALL_INDUSTRIES(i) {
00142     if (i->type != type || i == current) continue;
00143 
00144     best_dist = min(best_dist, DistanceManhattan(tile, i->xy));
00145   }
00146 
00147   return best_dist;
00148 }
00149 
00158 static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, const Industry *current)
00159 {
00160   uint32 GrfID = GetRegister(0x100);  
00161   IndustryType ind_index;
00162   uint32 closest_dist = UINT32_MAX;
00163   byte count = 0;
00164 
00165   /* Determine what will be the industry type to look for */
00166   switch (GrfID) {
00167     case 0:  // this is a default industry type
00168       ind_index = param_setID;
00169       break;
00170 
00171     case 0xFFFFFFFF: // current grf
00172       GrfID = GetIndustrySpec(current->type)->grf_prop.grffile->grfid;
00173       /* Fall through */
00174 
00175     default: // use the grfid specified in register 100h
00176       SetBit(param_setID, 7); // bit 7 means it is not an old type
00177       ind_index = MapNewGRFIndustryType(param_setID, GrfID);
00178       break;
00179   }
00180 
00181   if (layout_filter == 0) {
00182     /* If the filter is 0, it could be because none was specified as well as being really a 0.
00183      * In either case, just do the regular var67 */
00184     closest_dist = GetClosestIndustry(current->xy, ind_index, current);
00185     count = GetIndustryTypeCount(ind_index);
00186   } else {
00187     /* Count only those who match the same industry type and layout filter
00188      * Unfortunately, we have to do it manually */
00189     const Industry *i;
00190     FOR_ALL_INDUSTRIES(i) {
00191       if (i->type == ind_index && i != current && i->selected_layout == layout_filter) {
00192         closest_dist = min(closest_dist, DistanceManhattan(current->xy, i->xy));
00193         count++;
00194       }
00195     }
00196   }
00197 
00198   return count << 16 | GB(closest_dist, 0, 16);
00199 }
00200 
00207 uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00208 {
00209   const Industry *industry = object->u.industry.ind;
00210   TileIndex tile = object->u.industry.tile;
00211   IndustryType type = object->u.industry.type;
00212   const IndustrySpec *indspec = GetIndustrySpec(type);
00213 
00214   /* Shall the variable get resolved in parent scope and are we not yet in parent scope? */
00215   if (object->u.industry.gfx == INVALID_INDUSTRYTILE && object->scope == VSG_SCOPE_PARENT) {
00216     /* Pass the request on to the town of the industry */
00217     const Town *t;
00218 
00219     if (industry != NULL) {
00220       t = industry->town;
00221     } else if (tile != INVALID_TILE) {
00222       t = ClosestTownFromTile(tile, UINT_MAX);
00223     } else {
00224       *available = false;
00225       return UINT_MAX;
00226     }
00227 
00228     return TownGetVariable(variable, parameter, available, t);
00229   }
00230 
00231   if (industry == NULL) {
00232     /* industry does not exist, only use those variables that are "safe" */
00233     switch (variable) {
00234       /* Manhattan distance of closes dry/water tile */
00235       case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00236     }
00237 
00238     DEBUG(grf, 1, "Unhandled property 0x%X (no available industry) in callback 0x%x", variable, object->callback);
00239 
00240     *available = false;
00241     return UINT_MAX;
00242   }
00243 
00244   switch (variable) {
00245     case 0x40:
00246     case 0x41:
00247     case 0x42: { // waiting cargo, but only if those two callback flags are set
00248       uint16 callback = indspec->callback_flags;
00249       if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
00250         if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {
00251           return min(industry->incoming_cargo_waiting[variable - 0x40] / industry->prod_level, (uint16)0xFFFF);
00252         } else {
00253           return min(industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);
00254         }
00255       } else {
00256         return 0;
00257       }
00258     }
00259 
00260     /* Manhattan distance of closes dry/water tile */
00261     case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00262 
00263     /* Layout number */
00264     case 0x44: return industry->selected_layout;
00265 
00266     /* Company info */
00267     case 0x45: {
00268       byte colours;
00269       bool is_ai = false;
00270 
00271       if (IsValidCompanyID(industry->founder)) {
00272         const Company *c = GetCompany(industry->founder);
00273         const Livery *l = &c->livery[LS_DEFAULT];
00274 
00275         is_ai = c->is_ai;
00276         colours = l->colour1 + l->colour2 * 16;
00277       } else {
00278         colours = GB(Random(), 0, 8);
00279       }
00280 
00281       return industry->founder | (is_ai ? 0x10000 : 0) | (colours << 24);
00282     }
00283 
00284     case 0x46: return industry->construction_date; // Date when built - long format - (in days)
00285 
00286     /* Get industry ID at offset param */
00287     case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, industry->xy), industry);
00288 
00289     /* Get random tile bits at offset param */
00290     case 0x61:
00291       tile = GetNearbyTile(parameter, tile);
00292       return (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == industry) ? GetIndustryRandomBits(tile) : 0;
00293 
00294     /* Land info of nearby tiles */
00295     case 0x62: return GetNearbyIndustryTileInformation(parameter, tile, INVALID_INDUSTRY);
00296 
00297     /* Animation stage of nearby tiles */
00298     case 0x63:
00299       tile = GetNearbyTile(parameter, tile);
00300       if (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == industry) {
00301         return GetIndustryAnimationState(tile);
00302       }
00303       return 0xFFFFFFFF;
00304 
00305     /* Distance of nearest industry of given type */
00306     case 0x64: return GetClosestIndustry(tile, MapNewGRFIndustryType(parameter, indspec->grf_prop.grffile->grfid), industry);
00307     /* Get town zone and Manhattan distance of closest town */
00308     case 0x65: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceManhattan(tile, industry->town->xy), 0xFFFF);
00309     /* Get square of Euclidian distance of closes town */
00310     case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);
00311 
00312     /* Count of industry, distance of closest instance
00313      * 68 is the same as 67, but with a filtering on selected layout */
00314     case 0x67:
00315     case 0x68: return GetCountAndDistanceOfClosestInstance(parameter, variable == 0x68 ? GB(GetRegister(0x101), 0, 8) : 0, industry);
00316 
00317     /* Get a variable from the persistent storage */
00318     case 0x7C: return industry->psa.Get(parameter);
00319 
00320     /* Industry structure access*/
00321     case 0x80: return industry->xy;
00322     case 0x81: return GB(industry->xy, 8, 8);
00323     /* Pointer to the town the industry is associated with */
00324     case 0x82: return industry->town->index;
00325     case 0x83:
00326     case 0x84:
00327     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00328     case 0x86: return industry->width;
00329     case 0x87: return industry->height;// xy dimensions
00330 
00331     case 0x88:
00332     case 0x89: return industry->produced_cargo[variable - 0x88];
00333     case 0x8A: return industry->produced_cargo_waiting[0];
00334     case 0x8B: return GB(industry->produced_cargo_waiting[0], 8, 8);
00335     case 0x8C: return industry->produced_cargo_waiting[1];
00336     case 0x8D: return GB(industry->produced_cargo_waiting[1], 8, 8);
00337     case 0x8E:
00338     case 0x8F: return industry->production_rate[variable - 0x8E];
00339     case 0x90:
00340     case 0x91:
00341     case 0x92: return industry->accepts_cargo[variable - 0x90];
00342     case 0x93: return industry->prod_level;
00343     /* amount of cargo produced so far THIS month. */
00344     case 0x94: return industry->this_month_production[0];
00345     case 0x95: return GB(industry->this_month_production[0], 8, 8);
00346     case 0x96: return industry->this_month_production[1];
00347     case 0x97: return GB(industry->this_month_production[1], 8, 8);
00348     /* amount of cargo transported so far THIS month. */
00349     case 0x98: return industry->this_month_transported[0];
00350     case 0x99: return GB(industry->this_month_transported[0], 8, 8);
00351     case 0x9A: return industry->this_month_transported[1];
00352     case 0x9B: return GB(industry->this_month_transported[0], 8, 8);
00353     /* fraction of cargo transported LAST month. */
00354     case 0x9C:
00355     case 0x9D: return industry->last_month_pct_transported[variable - 0x9C];
00356     /* amount of cargo produced LAST month. */
00357     case 0x9E: return industry->last_month_production[0];
00358     case 0x9F: return GB(industry->last_month_production[0], 8, 8);
00359     case 0xA0: return industry->last_month_production[1];
00360     case 0xA1: return GB(industry->last_month_production[1], 8, 8);
00361     /* amount of cargo transported last month. */
00362     case 0xA2: return industry->last_month_transported[0];
00363     case 0xA3: return GB(industry->last_month_transported[0], 8, 8);
00364     case 0xA4: return industry->last_month_transported[1];
00365     case 0xA5: return GB(industry->last_month_transported[0], 8, 8);
00366 
00367     case 0xA6: return industry->type;
00368     case 0xA7: return industry->founder;
00369     case 0xA8: return industry->random_colour;
00370     case 0xA9: return Clamp(industry->last_prod_year - ORIGINAL_BASE_YEAR, 0, 255);
00371     case 0xAA: return industry->counter;
00372     case 0xAB: return GB(industry->counter, 8, 8);
00373     case 0xAC: return industry->was_cargo_delivered;
00374 
00375     case 0xB0: return Clamp(industry->construction_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date when built since 1920 (in days)
00376     case 0xB3: return industry->construction_type; // Construction type
00377     case 0xB4: return Clamp(industry->last_cargo_accepted_at - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date last cargo accepted since 1920 (in days)
00378   }
00379 
00380   DEBUG(grf, 1, "Unhandled industry property 0x%X", variable);
00381 
00382   *available = false;
00383   return UINT_MAX;
00384 }
00385 
00386 static const SpriteGroup *IndustryResolveReal(const ResolverObject *object, const SpriteGroup *group)
00387 {
00388   /* IndustryTile do not have 'real' groups */
00389   return NULL;
00390 }
00391 
00392 static uint32 IndustryGetRandomBits(const ResolverObject *object)
00393 {
00394   return object->u.industry.ind == NULL ? 0 : object->u.industry.ind->random;
00395 }
00396 
00397 static uint32 IndustryGetTriggers(const ResolverObject *object)
00398 {
00399   return object->u.industry.ind == NULL ? 0 : object->u.industry.ind->random_triggers;
00400 }
00401 
00402 static void IndustrySetTriggers(const ResolverObject *object, int triggers)
00403 {
00404   if (object->u.industry.ind == NULL) return;
00405   object->u.industry.ind->random_triggers = triggers;
00406 }
00407 
00408 static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *indus, IndustryType type)
00409 {
00410   res->GetRandomBits = IndustryGetRandomBits;
00411   res->GetTriggers   = IndustryGetTriggers;
00412   res->SetTriggers   = IndustrySetTriggers;
00413   res->GetVariable   = IndustryGetVariable;
00414   res->ResolveReal   = IndustryResolveReal;
00415 
00416   res->psa             = &indus->psa;
00417   res->u.industry.tile = tile;
00418   res->u.industry.ind  = indus;
00419   res->u.industry.gfx  = INVALID_INDUSTRYTILE;
00420   res->u.industry.type = type;
00421 
00422   res->callback        = CBID_NO_CALLBACK;
00423   res->callback_param1 = 0;
00424   res->callback_param2 = 0;
00425   res->last_value      = 0;
00426   res->trigger         = 0;
00427   res->reseed          = 0;
00428   res->count           = 0;
00429 
00430   const IndustrySpec *indspec = GetIndustrySpec(type);
00431   res->grffile         = (indspec != NULL ? indspec->grf_prop.grffile : NULL);
00432 }
00433 
00434 uint16 GetIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, Industry *industry, IndustryType type, TileIndex tile)
00435 {
00436   ResolverObject object;
00437   const SpriteGroup *group;
00438 
00439   NewIndustryResolver(&object, tile, industry, type);
00440   object.callback = callback;
00441   object.callback_param1 = param1;
00442   object.callback_param2 = param2;
00443 
00444   group = Resolve(GetIndustrySpec(type)->grf_prop.spritegroup, &object);
00445   if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
00446 
00447   return group->g.callback.result;
00448 }
00449 
00450 uint32 IndustryLocationGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00451 {
00452   const Industry *industry = object->u.industry.ind;
00453   TileIndex tile = object->u.industry.tile;
00454 
00455   if (object->scope == VSG_SCOPE_PARENT) {
00456     return TownGetVariable(variable, parameter, available, industry->town);
00457   }
00458 
00459   switch (variable) {
00460     case 0x80: return tile;
00461     case 0x81: return GB(tile, 8, 8);
00462 
00463     /* Pointer to the town the industry is associated with */
00464     case 0x82: return industry->town->index;
00465     case 0x83:
00466     case 0x84:
00467     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00468 
00469     /* Number of the layout */
00470     case 0x86: return industry->selected_layout;
00471 
00472     /* Ground type */
00473     case 0x87: return GetTerrainType(tile);
00474 
00475     /* Town zone */
00476     case 0x88: return GetTownRadiusGroup(industry->town, tile);
00477 
00478     /* Manhattan distance of the closest town */
00479     case 0x89: return min(DistanceManhattan(industry->town->xy, tile), 255);
00480 
00481     /* Lowest height of the tile */
00482     case 0x8A: return GetTileZ(tile);
00483 
00484     /* Distance to the nearest water/land tile */
00485     case 0x8B: return GetClosestWaterDistance(tile, (GetIndustrySpec(industry->type)->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00486 
00487     /* Square of Euclidian distance from town */
00488     case 0x8D: return min(DistanceSquare(industry->town->xy, tile), 65535);
00489 
00490     /* 32 random bits */
00491     case 0x8F: return _industry_creation_random_bits;
00492   }
00493 
00494   /* None of the special ones, so try the general ones */
00495   return IndustryGetVariable(object, variable, parameter, available);
00496 }
00497 
00498 bool CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uint itspec_index, uint32 seed)
00499 {
00500   const IndustrySpec *indspec = GetIndustrySpec(type);
00501 
00502   ResolverObject object;
00503   const SpriteGroup *group;
00504 
00505   Industry ind;
00506   ind.index = INVALID_INDUSTRY;
00507   ind.xy = tile;
00508   ind.width = 0;
00509   ind.type = type;
00510   ind.selected_layout = itspec_index;
00511   ind.town = ClosestTownFromTile(tile, UINT_MAX);
00512 
00513   NewIndustryResolver(&object, tile, &ind, type);
00514   object.GetVariable = IndustryLocationGetVariable;
00515   object.callback = CBID_INDUSTRY_LOCATION;
00516   _industry_creation_random_bits = seed;
00517 
00518   group = Resolve(GetIndustrySpec(type)->grf_prop.spritegroup, &object);
00519 
00520   /* Unlike the "normal" cases, not having a valid result means we allow
00521    * the building of the industry, as that's how it's done in TTDP. */
00522   if (group == NULL || group->type != SGT_CALLBACK || group->g.callback.result == 0x400) return true;
00523 
00524   /* Copy some parameters from the registers to the error message text ref. stack */
00525   SwitchToErrorRefStack();
00526   PrepareTextRefStackUsage(4);
00527   SwitchToNormalRefStack();
00528 
00529   switch (group->g.callback.result) {
00530     case 0x401: _error_message = STR_0239_SITE_UNSUITABLE; break;
00531     case 0x402: _error_message = STR_0317_CAN_ONLY_BE_BUILT_IN_RAINFOREST; break;
00532     case 0x403: _error_message = STR_0318_CAN_ONLY_BE_BUILT_IN_DESERT; break;
00533     default: _error_message = GetGRFStringID(indspec->grf_prop.grffile->grfid, 0xD000 + group->g.callback.result); break;
00534   }
00535 
00536   return false;
00537 }
00538 
00539 bool CheckIfCallBackAllowsAvailability(IndustryType type, IndustryAvailabilityCallType creation_type)
00540 {
00541   const IndustrySpec *indspec = GetIndustrySpec(type);
00542 
00543   if (HasBit(indspec->callback_flags, CBM_IND_AVAILABLE)) {
00544     uint16 res = GetIndustryCallback(CBID_INDUSTRY_AVAILABLE, 0, creation_type, NULL, type, INVALID_TILE);
00545     if (res != CALLBACK_FAILED) {
00546       return (res == 0);
00547     }
00548   }
00549   return true;
00550 }
00551 
00552 static int32 DerefIndProd(uint field, bool use_register)
00553 {
00554   return use_register ? (int32)GetRegister(field) : field;
00555 }
00556 
00562 void IndustryProductionCallback(Industry *ind, int reason)
00563 {
00564   const IndustrySpec *spec = GetIndustrySpec(ind->type);
00565   ResolverObject object;
00566   NewIndustryResolver(&object, ind->xy, ind, ind->type);
00567   if ((spec->behaviour & INDUSTRYBEH_PRODCALLBACK_RANDOM) != 0) object.callback_param1 = Random();
00568   int multiplier = 1;
00569   if ((spec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) multiplier = ind->prod_level;
00570   object.callback_param2 = reason;
00571 
00572   for (uint loop = 0;; loop++) {
00573     SB(object.callback_param2, 8, 16, loop);
00574     const SpriteGroup *group = Resolve(spec->grf_prop.spritegroup, &object);
00575     if (group == NULL || group->type != SGT_INDUSTRY_PRODUCTION) break;
00576 
00577     bool deref = (group->g.indprod.version == 1);
00578 
00579     for (uint i = 0; i < 3; i++) {
00580       ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->g.indprod.substract_input[i], deref) * multiplier, 0, 0xFFFF);
00581     }
00582     for (uint i = 0; i < 2; i++) {
00583       ind->produced_cargo_waiting[i] = Clamp(ind->produced_cargo_waiting[i] + max(DerefIndProd(group->g.indprod.add_output[i], deref), 0) * multiplier, 0, 0xFFFF);
00584     }
00585 
00586     int32 again = DerefIndProd(group->g.indprod.again, deref);
00587     if (again == 0) break;
00588 
00589     SB(object.callback_param2, 24, 8, again);
00590   }
00591 
00592   InvalidateWindow(WC_INDUSTRY_VIEW, ind->index);
00593 }

Generated on Wed Apr 1 14:38:08 2009 for OpenTTD by  doxygen 1.5.6