newgrf_industries.cpp

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00001 /* $Id: newgrf_industries.cpp 14426 2008-10-01 11:48:57Z rubidium $ */
00002 
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "debug.h"
00008 #include "variables.h"
00009 #include "landscape.h"
00010 #include "industry.h"
00011 #include "industry_map.h"
00012 #include "newgrf.h"
00013 #include "newgrf_callbacks.h"
00014 #include "newgrf_spritegroup.h"
00015 #include "newgrf_industries.h"
00016 #include "newgrf_industrytiles.h"
00017 #include "newgrf_commons.h"
00018 #include "newgrf_text.h"
00019 #include "newgrf_town.h"
00020 #include "window_func.h"
00021 #include "town.h"
00022 #include "player_func.h"
00023 #include "player_base.h"
00024 #include "command_func.h"
00025 
00026 #include "table/strings.h"
00027 
00028 static uint32 _industry_creation_random_bits;
00029 
00030 /* Since the industry IDs defined by the GRF file don't necessarily correlate
00031  * to those used by the game, the IDs used for overriding old industries must be
00032  * translated when the idustry spec is set. */
00033 IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);
00034 IndustryTileOverrideManager _industile_mngr(NEW_INDUSTRYTILEOFFSET, NUM_INDUSTRYTILES, INVALID_INDUSTRYTILE);
00035 
00036 IndustryType MapNewGRFIndustryType(IndustryType grf_type, uint32 grf_id)
00037 {
00038   if (grf_type == IT_INVALID) return IT_INVALID;
00039   if (!HasBit(grf_type, 7)) return GB(grf_type, 0, 6);
00040 
00041   return _industry_mngr.GetID(GB(grf_type, 0, 6), grf_id);
00042 }
00043 
00044 static uint32 GetGRFParameter(IndustryType ind_id, byte parameter)
00045 {
00046   const IndustrySpec *indspec = GetIndustrySpec(ind_id);
00047   const GRFFile *file = indspec->grf_prop.grffile;
00048 
00049   if (parameter >= file->param_end) return 0;
00050   return file->param[parameter];
00051 }
00052 
00060 static uint GetClosestWaterDistance(TileIndex tile, bool water)
00061 {
00062   if (IsTileType(tile, MP_WATER) == water) return 0;
00063 
00064   uint max_dist = water ? 0x7F : 0x200;
00065 
00066   int x = TileX(tile);
00067   int y = TileY(tile);
00068 
00069   uint max_x = MapMaxX();
00070   uint max_y = MapMaxY();
00071 
00072   /* go in a 'spiral' with increasing manhattan distance in each iteration */
00073   for (uint dist = 1; dist < max_dist; dist++) {
00074     /* next 'diameter' */
00075     y--;
00076 
00077     /* going counter-clockwise around this square */
00078     for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
00079       static const int8 ddx[DIAGDIR_END] = { -1,  1,  1, -1};
00080       static const int8 ddy[DIAGDIR_END] = {  1,  1, -1, -1};
00081 
00082       int dx = ddx[dir];
00083       int dy = ddy[dir];
00084 
00085       /* each side of this square has length 'dist' */
00086       for (uint a = 0; a < dist; a++) {
00087         /* MP_VOID tiles are not checked (interval is [0; max) for IsInsideMM())*/
00088         if (IsInsideMM(x, 0, max_x) && IsInsideMM(y, 0, max_y)) {
00089           TileIndex t = TileXY(x, y);
00090           if (IsTileType(t, MP_WATER) == water) return dist;
00091         }
00092         x += dx;
00093         y += dy;
00094       }
00095     }
00096   }
00097 
00098   if (!water) {
00099     /* no land found - is this a water-only map? */
00100     for (TileIndex t = 0; t < MapSize(); t++) {
00101       if (!IsTileType(t, MP_VOID) && !IsTileType(t, MP_WATER)) return 0x1FF;
00102     }
00103   }
00104 
00105   return max_dist;
00106 }
00107 
00113 uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i)
00114 {
00115   if (!IsTileType(tile, MP_INDUSTRY) || GetIndustryIndex(tile) != i->index) {
00116     /* No industry and/or the tile does not have the same industry as the one we match it with */
00117     return 0xFFFF;
00118   }
00119 
00120   IndustryGfx gfx = GetCleanIndustryGfx(tile);
00121   const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
00122   const IndustrySpec *indold = GetIndustrySpec(i->type);
00123 
00124   if (gfx < NEW_INDUSTRYOFFSET) { // Does it belongs to an old type?
00125     /* It is an old tile.  We have to see if it's been overriden */
00126     if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) { // has it been overridden?
00127       return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
00128     }
00129     /* Not overriden */
00130     const IndustryTileSpec *tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
00131 
00132     if (tile_ovr->grf_prop.grffile->grfid == indold->grf_prop.grffile->grfid) {
00133       return tile_ovr->grf_prop.local_id; // same grf file
00134     } else {
00135       return 0xFFFE; // not the same grf file
00136     }
00137   }
00138   /* Not an 'old type' tile */
00139   if (indtsp->grf_prop.spritegroup != NULL) { // tile has a spritegroup ?
00140     if (indtsp->grf_prop.grffile->grfid == indold->grf_prop.grffile->grfid) { // same industry, same grf ?
00141       return indtsp->grf_prop.local_id;
00142     } else {
00143       return 0xFFFE; // Defined in another grf file
00144     }
00145   }
00146   /* The tile has no spritegroup */
00147   return 0xFF << 8 | indtsp->grf_prop.subst_id; // so just give him the substitute
00148 }
00149 
00150 static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Industry *current)
00151 {
00152   uint32 best_dist = MAX_UVALUE(uint32);
00153   const Industry *i;
00154   FOR_ALL_INDUSTRIES(i) {
00155     if (i->type != type || i == current) continue;
00156 
00157     best_dist = min(best_dist, DistanceManhattan(tile, i->xy));
00158   }
00159 
00160   return best_dist;
00161 }
00162 
00171 static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, const Industry *current)
00172 {
00173   uint32 GrfID = GetRegister(0x100);  
00174   IndustryType ind_index;
00175   uint32 closest_dist = MAX_UVALUE(uint32);
00176   byte count = 0;
00177 
00178   /* Determine what will be the industry type to look for */
00179   switch (GrfID) {
00180     case 0:  // this is a default industry type
00181       ind_index = param_setID;
00182       break;
00183 
00184     case 0xFFFFFFFF: // current grf
00185       GrfID = GetIndustrySpec(current->type)->grf_prop.grffile->grfid;
00186       /* Fall through */
00187 
00188     default: //use the grfid specified in register 100h
00189       SetBit(param_setID, 7); // bit 7 means it is not an old type
00190       ind_index = MapNewGRFIndustryType(param_setID, GrfID);
00191       break;
00192   }
00193 
00194   if (layout_filter == 0) {
00195     /* If the filter is 0, it could be because none was specified as well as being really a 0.
00196      * In either case, just do the regular var67 */
00197     closest_dist = GetClosestIndustry(current->xy, ind_index, current);
00198     count = GetIndustryTypeCount(ind_index);
00199   } else {
00200     /* Count only those who match the same industry type and layout filter
00201      * Unfortunately, we have to do it manually */
00202     const Industry *i;
00203     FOR_ALL_INDUSTRIES(i) {
00204       if (i->type == ind_index && i != current && i->selected_layout == layout_filter) {
00205         closest_dist = min(closest_dist, DistanceManhattan(current->xy, i->xy));
00206         count++;
00207       }
00208     }
00209   }
00210 
00211   return count << 16 | GB(closest_dist, 0, 16);
00212 }
00213 
00220 uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00221 {
00222   const Industry *industry = object->u.industry.ind;
00223   TileIndex tile = object->u.industry.tile;
00224   IndustryType type = object->u.industry.type;
00225   const IndustrySpec *indspec = GetIndustrySpec(type);
00226 
00227   /* Shall the variable get resolved in parent scope and are we not yet in parent scope? */
00228   if (object->u.industry.gfx == INVALID_INDUSTRYTILE && object->scope == VSG_SCOPE_PARENT) {
00229     /* Pass the request on to the town of the industry */
00230     const Town *t;
00231 
00232     if (industry != NULL) {
00233       t = industry->town;
00234     } else if (tile != INVALID_TILE) {
00235       t = ClosestTownFromTile(tile, UINT_MAX);
00236     } else {
00237       *available = false;
00238       return UINT_MAX;
00239     }
00240 
00241     return TownGetVariable(variable, parameter, available, t);
00242   }
00243 
00244   if (industry == NULL) {
00245     /* industry does not exist, only use those variables that are "safe" */
00246     switch (variable) {
00247       /* Read GRF parameter */
00248       case 0x7F: return GetGRFParameter(type, parameter);
00249       /* Manhattan distance of closes dry/water tile */
00250       case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00251     }
00252 
00253     DEBUG(grf, 1, "Unhandled property 0x%X (no available industry) in callback 0x%x", variable, object->callback);
00254 
00255     *available = false;
00256     return UINT_MAX;
00257   }
00258 
00259   switch (variable) {
00260     case 0x40:
00261     case 0x41:
00262     case 0x42: { // waiting cargo, but only if those two callback flags are set
00263       uint16 callback = indspec->callback_flags;
00264       if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
00265         if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {
00266           return min(industry->incoming_cargo_waiting[variable - 0x40] / industry->prod_level, (uint16)0xFFFF);
00267         } else {
00268           return min(industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);
00269         }
00270       } else {
00271         return 0;
00272       }
00273     }
00274 
00275     /* Manhattan distance of closes dry/water tile */
00276     case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00277 
00278     /* Layout number */
00279     case 0x44: return industry->selected_layout;
00280 
00281     /* player info */
00282     case 0x45: {
00283       byte colours;
00284       bool is_ai = false;
00285 
00286       if (IsValidPlayer(industry->founder)) {
00287         const Player *p = GetPlayer(industry->founder);
00288         const Livery *l = &p->livery[LS_DEFAULT];
00289 
00290         is_ai = p->is_ai;
00291         colours = l->colour1 + l->colour2 * 16;
00292       } else {
00293         colours = GB(Random(), 0, 8);
00294       }
00295 
00296       return industry->founder | (is_ai ? 0x10000 : 0) | (colours << 24);
00297     }
00298 
00299     /* Get industry ID at offset param */
00300     case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, industry->xy), industry);
00301 
00302     /* Get random tile bits at offset param */
00303     case 0x61:
00304       tile = GetNearbyTile(parameter, tile);
00305       return (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == industry) ? GetIndustryRandomBits(tile) : 0;
00306 
00307     /* Land info of nearby tiles */
00308     case 0x62: return GetNearbyIndustryTileInformation(parameter, tile, INVALID_INDUSTRY);
00309 
00310     /* Animation stage of nearby tiles */
00311     case 0x63:
00312       tile = GetNearbyTile(parameter, tile);
00313       if (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == industry) {
00314         return GetIndustryAnimationState(tile);
00315       }
00316       return 0xFFFFFFFF;
00317 
00318     /* Distance of nearest industry of given type */
00319     case 0x64: return GetClosestIndustry(tile, MapNewGRFIndustryType(parameter, indspec->grf_prop.grffile->grfid), industry);
00320     /* Get town zone and Manhattan distance of closest town */
00321     case 0x65: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceManhattan(tile, industry->town->xy), 0xFFFF);
00322     /* Get square of Euclidian distance of closes town */
00323     case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);
00324 
00325     /* Count of industry, distance of closest instance
00326      * 68 is the same as 67, but with a filtering on selected layout */
00327     case 0x67:
00328     case 0x68: return GetCountAndDistanceOfClosestInstance(parameter, variable == 0x68 ? GB(GetRegister(0x101), 0, 8) : 0, industry);
00329 
00330     /* Get a variable from the persistent storage */
00331     case 0x7C: return industry->psa.Get(parameter);
00332 
00333     /* Read GRF parameter */
00334     case 0x7F: return GetGRFParameter(type, parameter);
00335 
00336     /* Industry structure access*/
00337     case 0x80: return industry->xy;
00338     case 0x81: return GB(industry->xy, 8, 8);
00339     /* Pointer to the town the industry is associated with */
00340     case 0x82: return industry->town->index;
00341     case 0x83:
00342     case 0x84:
00343     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00344     case 0x86: return industry->width;
00345     case 0x87: return industry->height;// xy dimensions
00346     /*  */
00347     case 0x88:
00348     case 0x89: return industry->produced_cargo[variable - 0x88];
00349     case 0x8A: return industry->produced_cargo_waiting[0];
00350     case 0x8B: return GB(industry->produced_cargo_waiting[0], 8, 8);
00351     case 0x8C: return industry->produced_cargo_waiting[1];
00352     case 0x8D: return GB(industry->produced_cargo_waiting[1], 8, 8);
00353     case 0x8E:
00354     case 0x8F: return industry->production_rate[variable - 0x8E];
00355     case 0x90:
00356     case 0x91:
00357     case 0x92: return industry->accepts_cargo[variable - 0x90];
00358     case 0x93: return industry->prod_level;
00359     /* amount of cargo produced so far THIS month. */
00360     case 0x94: return industry->this_month_production[0];
00361     case 0x95: return GB(industry->this_month_production[0], 8, 8);
00362     case 0x96: return industry->this_month_production[1];
00363     case 0x97: return GB(industry->this_month_production[1], 8, 8);
00364     /* amount of cargo transported so far THIS month. */
00365     case 0x98: return industry->this_month_transported[0];
00366     case 0x99: return GB(industry->this_month_transported[0], 8, 8);
00367     case 0x9A: return industry->this_month_transported[1];
00368     case 0x9B: return GB(industry->this_month_transported[0], 8, 8);
00369     /* fraction of cargo transported LAST month. */
00370     case 0x9C:
00371     case 0x9D: return industry->last_month_pct_transported[variable - 0x9C];
00372     /* amount of cargo produced LAST month. */
00373     case 0x9E: return industry->last_month_production[0];
00374     case 0x9F: return GB(industry->last_month_production[0], 8, 8);
00375     case 0xA0: return industry->last_month_production[1];
00376     case 0xA1: return GB(industry->last_month_production[1], 8, 8);
00377     /* amount of cargo transported last month. */
00378     case 0xA2: return industry->last_month_transported[0];
00379     case 0xA3: return GB(industry->last_month_transported[0], 8, 8);
00380     case 0xA4: return industry->last_month_transported[1];
00381     case 0xA5: return GB(industry->last_month_transported[0], 8, 8);
00382 
00383     case 0xA6: return industry->type;
00384     case 0xA7: return industry->founder;
00385     case 0xA8: return industry->random_color;
00386     case 0xA9: return Clamp(industry->last_prod_year - ORIGINAL_BASE_YEAR, 0, 255);
00387     case 0xAA: return industry->counter;
00388     case 0xAB: return GB(industry->counter, 8, 8);
00389     case 0xAC: return industry->was_cargo_delivered;
00390 
00391     case 0xB0: return Clamp(industry->construction_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date when built since 1920 (in days)
00392     case 0xB3: return industry->construction_type; // Construction type
00393     case 0xB4: return Clamp(industry->last_cargo_accepted_at - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date last cargo accepted since 1920 (in days)
00394   }
00395 
00396   DEBUG(grf, 1, "Unhandled industry property 0x%X", variable);
00397 
00398   *available = false;
00399   return (uint32)-1;
00400 }
00401 
00402 static const SpriteGroup *IndustryResolveReal(const ResolverObject *object, const SpriteGroup *group)
00403 {
00404   /* IndustryTile do not have 'real' groups */
00405   return NULL;
00406 }
00407 
00408 static uint32 IndustryGetRandomBits(const ResolverObject *object)
00409 {
00410   return object->u.industry.ind == NULL ? 0 : object->u.industry.ind->random;
00411 }
00412 
00413 static uint32 IndustryGetTriggers(const ResolverObject *object)
00414 {
00415   return object->u.industry.ind == NULL ? 0 : object->u.industry.ind->random_triggers;
00416 }
00417 
00418 static void IndustrySetTriggers(const ResolverObject *object, int triggers)
00419 {
00420   if (object->u.industry.ind == NULL) return;
00421   object->u.industry.ind->random_triggers = triggers;
00422 }
00423 
00424 static void NewIndustryResolver(ResolverObject *res, TileIndex tile, Industry *indus, IndustryType type)
00425 {
00426   res->GetRandomBits = IndustryGetRandomBits;
00427   res->GetTriggers   = IndustryGetTriggers;
00428   res->SetTriggers   = IndustrySetTriggers;
00429   res->GetVariable   = IndustryGetVariable;
00430   res->ResolveReal   = IndustryResolveReal;
00431 
00432   res->psa             = &indus->psa;
00433   res->u.industry.tile = tile;
00434   res->u.industry.ind  = indus;
00435   res->u.industry.gfx  = INVALID_INDUSTRYTILE;
00436   res->u.industry.type = type;
00437 
00438   res->callback        = CBID_NO_CALLBACK;
00439   res->callback_param1 = 0;
00440   res->callback_param2 = 0;
00441   res->last_value      = 0;
00442   res->trigger         = 0;
00443   res->reseed          = 0;
00444 }
00445 
00446 uint16 GetIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, Industry *industry, IndustryType type, TileIndex tile)
00447 {
00448   ResolverObject object;
00449   const SpriteGroup *group;
00450 
00451   NewIndustryResolver(&object, tile, industry, type);
00452   object.callback = callback;
00453   object.callback_param1 = param1;
00454   object.callback_param2 = param2;
00455 
00456   group = Resolve(GetIndustrySpec(type)->grf_prop.spritegroup, &object);
00457   if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
00458 
00459   return group->g.callback.result;
00460 }
00461 
00462 uint32 IndustryLocationGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00463 {
00464   const Industry *industry = object->u.industry.ind;
00465   TileIndex tile = object->u.industry.tile;
00466 
00467   if (object->scope == VSG_SCOPE_PARENT) {
00468     return TownGetVariable(variable, parameter, available, industry->town);
00469   }
00470 
00471   switch (variable) {
00472     case 0x80: return tile;
00473     case 0x81: return GB(tile, 8, 8);
00474 
00475     /* Pointer to the town the industry is associated with */
00476     case 0x82: return industry->town->index;
00477     case 0x83:
00478     case 0x84:
00479     case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported
00480 
00481     /* Number of the layout */
00482     case 0x86: return industry->selected_layout;
00483 
00484     /* Ground type */
00485     case 0x87: return GetTerrainType(tile);
00486 
00487     /* Town zone */
00488     case 0x88: return GetTownRadiusGroup(industry->town, tile);
00489 
00490     /* Manhattan distance of the closest town */
00491     case 0x89: return min(DistanceManhattan(industry->town->xy, tile), 255);
00492 
00493     /* Lowest height of the tile */
00494     case 0x8A: return GetTileZ(tile);
00495 
00496     /* Distance to the nearest water/land tile */
00497     case 0x8B: return GetClosestWaterDistance(tile, (GetIndustrySpec(industry->type)->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);
00498 
00499     /* Square of Euclidian distance from town */
00500     case 0x8D: return min(DistanceSquare(industry->town->xy, tile), 65535);
00501 
00502     /* 32 random bits */
00503     case 0x8F: return _industry_creation_random_bits;
00504   }
00505 
00506   /* None of the special ones, so try the general ones */
00507   return IndustryGetVariable(object, variable, parameter, available);
00508 }
00509 
00510 bool CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uint itspec_index, uint32 seed)
00511 {
00512   const IndustrySpec *indspec = GetIndustrySpec(type);
00513 
00514   ResolverObject object;
00515   const SpriteGroup *group;
00516 
00517   Industry ind;
00518   ind.index = INVALID_INDUSTRY;
00519   ind.xy = tile;
00520   ind.width = 0;
00521   ind.type = type;
00522   ind.selected_layout = itspec_index;
00523   ind.town = ClosestTownFromTile(tile, (uint)-1);
00524 
00525   NewIndustryResolver(&object, tile, &ind, type);
00526   object.GetVariable = IndustryLocationGetVariable;
00527   object.callback = CBID_INDUSTRY_LOCATION;
00528   _industry_creation_random_bits = seed;
00529 
00530   group = Resolve(GetIndustrySpec(type)->grf_prop.spritegroup, &object);
00531 
00532   /* Unlike the "normal" cases, not having a valid result means we allow
00533    * the building of the industry, as that's how it's done in TTDP. */
00534   if (group == NULL || group->type != SGT_CALLBACK) return true;
00535 
00536   /* Copy some parameters from the registers to the error message text ref. stack */
00537   SwitchToErrorRefStack();
00538   PrepareTextRefStackUsage(4);
00539   SwitchToNormalRefStack();
00540 
00541   switch (group->g.callback.result) {
00542     case 0x400: return true;
00543     case 0x401: _error_message = STR_0239_SITE_UNSUITABLE; break;
00544     case 0x402: _error_message = STR_0317_CAN_ONLY_BE_BUILT_IN_RAINFOREST; break;
00545     case 0x403: _error_message = STR_0318_CAN_ONLY_BE_BUILT_IN_DESERT; break;
00546     default: _error_message = GetGRFStringID(indspec->grf_prop.grffile->grfid, 0xD000 + group->g.callback.result); break;
00547   }
00548 
00549   return false;
00550 }
00551 
00552 bool CheckIfCallBackAllowsAvailability(IndustryType type, IndustryAvailabilityCallType creation_type)
00553 {
00554   const IndustrySpec *indspec = GetIndustrySpec(type);
00555 
00556   if (HasBit(indspec->callback_flags, CBM_IND_AVAILABLE)) {
00557     uint16 res = GetIndustryCallback(CBID_INDUSTRY_AVAILABLE, 0, creation_type, NULL, type, INVALID_TILE);
00558     if (res != CALLBACK_FAILED) {
00559       return (res == 0);
00560     }
00561   }
00562   return true;
00563 }
00564 
00565 static int32 DerefIndProd(uint field, bool use_register)
00566 {
00567   return use_register ? (int32)GetRegister(field) : field;
00568 }
00569 
00575 void IndustryProductionCallback(Industry *ind, int reason)
00576 {
00577   const IndustrySpec *spec = GetIndustrySpec(ind->type);
00578   ResolverObject object;
00579   NewIndustryResolver(&object, ind->xy, ind, ind->type);
00580   if ((spec->behaviour & INDUSTRYBEH_PRODCALLBACK_RANDOM) != 0) object.callback_param1 = Random();
00581   int multiplier = 1;
00582   if ((spec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) multiplier = ind->prod_level;
00583   object.callback_param2 = reason;
00584 
00585   for (uint loop = 0;; loop++) {
00586     SB(object.callback_param2, 8, 16, loop);
00587     const SpriteGroup *group = Resolve(spec->grf_prop.spritegroup, &object);
00588     if (group == NULL || group->type != SGT_INDUSTRY_PRODUCTION) break;
00589 
00590     bool deref = (group->g.indprod.version == 1);
00591 
00592     for (uint i = 0; i < 3; i++) {
00593       ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->g.indprod.substract_input[i], deref) * multiplier, 0, 0xFFFF);
00594     }
00595     for (uint i = 0; i < 2; i++) {
00596       ind->produced_cargo_waiting[i] = Clamp(ind->produced_cargo_waiting[i] + max(DerefIndProd(group->g.indprod.add_output[i], deref), 0) * multiplier, 0, 0xFFFF);
00597     }
00598 
00599     int32 again = DerefIndProd(group->g.indprod.again, deref);
00600     if (again == 0) break;
00601 
00602     SB(object.callback_param2, 24, 8, again);
00603   }
00604 
00605   InvalidateWindow(WC_INDUSTRY_VIEW, ind->index);
00606 }

Generated on Wed Oct 1 17:03:22 2008 for openttd by  doxygen 1.5.6