00001
00002
00005 #include "stdafx.h"
00006 #include "variables.h"
00007 #include "landscape.h"
00008 #include "debug.h"
00009 #include "station_map.h"
00010 #include "newgrf_commons.h"
00011 #include "newgrf_station.h"
00012 #include "newgrf_spritegroup.h"
00013 #include "newgrf_sound.h"
00014 #include "town.h"
00015 #include "newgrf_town.h"
00016 #include "gfx_func.h"
00017 #include "date_func.h"
00018 #include "company_func.h"
00019 #include "animated_tile_func.h"
00020 #include "functions.h"
00021 #include "tunnelbridge_map.h"
00022 #include "spritecache.h"
00023
00024 #include "table/strings.h"
00025
00026 static StationClass _station_classes[STAT_CLASS_MAX];
00027
00028 enum {
00029 MAX_SPECLIST = 255,
00030 };
00031
00037 void ResetStationClasses()
00038 {
00039 for (StationClassID i = STAT_CLASS_BEGIN; i < STAT_CLASS_MAX; i++) {
00040 _station_classes[i].id = 0;
00041 _station_classes[i].name = STR_EMPTY;
00042 _station_classes[i].stations = 0;
00043
00044 free(_station_classes[i].spec);
00045 _station_classes[i].spec = NULL;
00046 }
00047
00048
00049 _station_classes[0].id = 'DFLT';
00050 _station_classes[0].name = STR_STAT_CLASS_DFLT;
00051 _station_classes[0].stations = 1;
00052 _station_classes[0].spec = MallocT<StationSpec*>(1);
00053 _station_classes[0].spec[0] = NULL;
00054
00055 _station_classes[1].id = 'WAYP';
00056 _station_classes[1].name = STR_STAT_CLASS_WAYP;
00057 _station_classes[1].stations = 1;
00058 _station_classes[1].spec = MallocT<StationSpec*>(1);
00059 _station_classes[1].spec[0] = NULL;
00060 }
00061
00067 StationClassID AllocateStationClass(uint32 cls)
00068 {
00069 for (StationClassID i = STAT_CLASS_BEGIN; i < STAT_CLASS_MAX; i++) {
00070 if (_station_classes[i].id == cls) {
00071
00072 return i;
00073 } else if (_station_classes[i].id == 0) {
00074
00075 _station_classes[i].id = cls;
00076 return i;
00077 }
00078 }
00079
00080 grfmsg(2, "StationClassAllocate: already allocated %d classes, using default", STAT_CLASS_MAX);
00081 return STAT_CLASS_DFLT;
00082 }
00083
00085 void SetStationClassName(StationClassID sclass, StringID name)
00086 {
00087 assert(sclass < STAT_CLASS_MAX);
00088 _station_classes[sclass].name = name;
00089 }
00090
00092 StringID GetStationClassName(StationClassID sclass)
00093 {
00094 assert(sclass < STAT_CLASS_MAX);
00095 return _station_classes[sclass].name;
00096 }
00097
00102 uint GetNumStationClasses()
00103 {
00104 uint i;
00105 for (i = 0; i < STAT_CLASS_MAX && _station_classes[i].id != 0; i++) {}
00106 return i;
00107 }
00108
00114 uint GetNumCustomStations(StationClassID sclass)
00115 {
00116 assert(sclass < STAT_CLASS_MAX);
00117 return _station_classes[sclass].stations;
00118 }
00119
00124 void SetCustomStationSpec(StationSpec *statspec)
00125 {
00126 StationClass *station_class;
00127 int i;
00128
00129
00130 if (statspec->allocated) return;
00131
00132 assert(statspec->sclass < STAT_CLASS_MAX);
00133 station_class = &_station_classes[statspec->sclass];
00134
00135 i = station_class->stations++;
00136 station_class->spec = ReallocT(station_class->spec, station_class->stations);
00137
00138 station_class->spec[i] = statspec;
00139 statspec->allocated = true;
00140 }
00141
00148 const StationSpec *GetCustomStationSpec(StationClassID sclass, uint station)
00149 {
00150 assert(sclass < STAT_CLASS_MAX);
00151 if (station < _station_classes[sclass].stations)
00152 return _station_classes[sclass].spec[station];
00153
00154
00155
00156 return NULL;
00157 }
00158
00166 const StationSpec *GetCustomStationSpecByGrf(uint32 grfid, byte localidx, int *index)
00167 {
00168 uint j;
00169
00170 for (StationClassID i = STAT_CLASS_BEGIN; i < STAT_CLASS_MAX; i++) {
00171 for (j = 0; j < _station_classes[i].stations; j++) {
00172 const StationSpec *statspec = _station_classes[i].spec[j];
00173 if (statspec == NULL) continue;
00174 if (statspec->grffile->grfid == grfid && statspec->localidx == localidx) {
00175 if (index != NULL) *index = j;
00176 return statspec;
00177 }
00178 }
00179 }
00180
00181 return NULL;
00182 }
00183
00184
00185
00186
00187
00188
00189
00190
00191
00192 uint32 GetPlatformInfo(Axis axis, byte tile, int platforms, int length, int x, int y, bool centred)
00193 {
00194 uint32 retval = 0;
00195
00196 if (axis == AXIS_X) {
00197 Swap(platforms, length);
00198 Swap(x, y);
00199 }
00200
00201
00202 platforms = min(15, platforms);
00203 length = min(15, length);
00204 x = min(15, x);
00205 y = min(15, y);
00206 if (centred) {
00207 x -= platforms / 2;
00208 y -= length / 2;
00209 SB(retval, 0, 4, y & 0xF);
00210 SB(retval, 4, 4, x & 0xF);
00211 } else {
00212 SB(retval, 0, 4, y);
00213 SB(retval, 4, 4, length - y - 1);
00214 SB(retval, 8, 4, x);
00215 SB(retval, 12, 4, platforms - x - 1);
00216 }
00217 SB(retval, 16, 4, length);
00218 SB(retval, 20, 4, platforms);
00219 SB(retval, 24, 4, tile);
00220
00221 return retval;
00222 }
00223
00224
00225
00226
00227
00228
00229 static TileIndex FindRailStationEnd(TileIndex tile, TileIndexDiff delta, bool check_type, bool check_axis)
00230 {
00231 bool waypoint;
00232 byte orig_type = 0;
00233 Axis orig_axis = AXIS_X;
00234
00235 waypoint = IsTileType(tile, MP_RAILWAY);
00236
00237 if (waypoint) {
00238 if (check_axis) orig_axis = GetWaypointAxis(tile);
00239 } else {
00240 if (check_type) orig_type = GetCustomStationSpecIndex(tile);
00241 if (check_axis) orig_axis = GetRailStationAxis(tile);
00242 }
00243
00244 while (true) {
00245 TileIndex new_tile = TILE_ADD(tile, delta);
00246
00247 if (waypoint) {
00248 if (!IsRailWaypointTile(new_tile)) break;
00249 if (check_axis && GetWaypointAxis(new_tile) != orig_axis) break;
00250 } else {
00251 if (!IsRailwayStationTile(new_tile)) break;
00252 if (check_type && GetCustomStationSpecIndex(new_tile) != orig_type) break;
00253 if (check_axis && GetRailStationAxis(new_tile) != orig_axis) break;
00254 }
00255
00256 tile = new_tile;
00257 }
00258 return tile;
00259 }
00260
00261
00262 static uint32 GetPlatformInfoHelper(TileIndex tile, bool check_type, bool check_axis, bool centred)
00263 {
00264 int tx = TileX(tile);
00265 int ty = TileY(tile);
00266 int sx = TileX(FindRailStationEnd(tile, TileDiffXY(-1, 0), check_type, check_axis));
00267 int sy = TileY(FindRailStationEnd(tile, TileDiffXY( 0, -1), check_type, check_axis));
00268 int ex = TileX(FindRailStationEnd(tile, TileDiffXY( 1, 0), check_type, check_axis)) + 1;
00269 int ey = TileY(FindRailStationEnd(tile, TileDiffXY( 0, 1), check_type, check_axis)) + 1;
00270 Axis axis = IsTileType(tile, MP_RAILWAY) ? GetWaypointAxis(tile) : GetRailStationAxis(tile);
00271
00272 tx -= sx; ex -= sx;
00273 ty -= sy; ey -= sy;
00274
00275 return GetPlatformInfo(axis, IsTileType(tile, MP_RAILWAY) ? 2 : GetStationGfx(tile), ex, ey, tx, ty, centred);
00276 }
00277
00278
00279 static uint32 GetRailContinuationInfo(TileIndex tile)
00280 {
00281
00282 static const Direction x_dir[8] = { DIR_SW, DIR_NE, DIR_SE, DIR_NW, DIR_S, DIR_E, DIR_W, DIR_N };
00283 static const DiagDirection x_exits[8] = { DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SW, DIAGDIR_NE };
00284
00285
00286 static const Direction y_dir[8] = { DIR_SE, DIR_NW, DIR_SW, DIR_NE, DIR_S, DIR_W, DIR_E, DIR_N };
00287 static const DiagDirection y_exits[8] = { DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SE, DIAGDIR_NW };
00288
00289 Axis axis = IsTileType(tile, MP_RAILWAY) ? GetWaypointAxis(tile) : GetRailStationAxis(tile);
00290
00291
00292 const Direction *dir = axis == AXIS_X ? x_dir : y_dir;
00293 const DiagDirection *diagdir = axis == AXIS_X ? x_exits : y_exits;
00294
00295 uint32 res = 0;
00296 uint i;
00297
00298 for (i = 0; i < lengthof(x_dir); i++, dir++, diagdir++) {
00299 TileIndex neighbour_tile = tile + TileOffsByDir(*dir);
00300 TrackBits trackbits = TrackStatusToTrackBits(GetTileTrackStatus(neighbour_tile, TRANSPORT_RAIL, 0));
00301 if (trackbits != TRACK_BIT_NONE) {
00302
00303 SetBit(res, i + 8);
00304
00305
00306
00307 if (IsTileType(neighbour_tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(neighbour_tile) != *diagdir) {
00308 continue;
00309 }
00310
00311
00312 if (trackbits & DiagdirReachesTracks(*diagdir)) SetBit(res, i);
00313 }
00314 }
00315
00316 return res;
00317 }
00318
00319
00320
00321 static uint32 StationGetRandomBits(const ResolverObject *object)
00322 {
00323 const Station *st = object->u.station.st;
00324 const TileIndex tile = object->u.station.tile;
00325 return (st == NULL ? 0 : st->random_bits) | (tile == INVALID_TILE ? 0 : GetStationTileRandomBits(tile) << 16);
00326 }
00327
00328
00329 static uint32 StationGetTriggers(const ResolverObject *object)
00330 {
00331 const Station *st = object->u.station.st;
00332 return st == NULL ? 0 : st->waiting_triggers;
00333 }
00334
00335
00336 static void StationSetTriggers(const ResolverObject *object, int triggers)
00337 {
00338 Station *st = (Station*)object->u.station.st;
00339 assert(st != NULL);
00340 st->waiting_triggers = triggers;
00341 }
00342
00348 static struct {
00349 uint32 v40;
00350 uint32 v41;
00351 uint32 v45;
00352 uint32 v46;
00353 uint32 v47;
00354 uint32 v49;
00355 uint8 valid;
00356 } _svc;
00357
00358 static uint32 StationGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00359 {
00360 const Station *st = object->u.station.st;
00361 TileIndex tile = object->u.station.tile;
00362
00363 if (object->scope == VSG_SCOPE_PARENT) {
00364
00365 const Town *t;
00366
00367 if (st != NULL) {
00368 t = st->town;
00369 } else if (tile != INVALID_TILE) {
00370 t = ClosestTownFromTile(tile, UINT_MAX);
00371 } else {
00372 *available = false;
00373 return UINT_MAX;
00374 }
00375
00376 return TownGetVariable(variable, parameter, available, t);
00377 }
00378
00379 if (st == NULL) {
00380
00381 switch (variable) {
00382 case 0x40:
00383 case 0x41:
00384 case 0x46:
00385 case 0x47:
00386 case 0x49: return 0x2110000;
00387 case 0x42: return 0;
00388 case 0x43: return _current_company;
00389 case 0x44: return 2;
00390 case 0xFA: return Clamp(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
00391 }
00392
00393 *available = false;
00394 return UINT_MAX;
00395 }
00396
00397 switch (variable) {
00398
00399 case 0x40:
00400 if (!HasBit(_svc.valid, 0)) { _svc.v40 = GetPlatformInfoHelper(tile, false, false, false); SetBit(_svc.valid, 0); }
00401 return _svc.v40;
00402
00403 case 0x41:
00404 if (!HasBit(_svc.valid, 1)) { _svc.v41 = GetPlatformInfoHelper(tile, true, false, false); SetBit(_svc.valid, 1); }
00405 return _svc.v41;
00406
00407 case 0x42: return GetTerrainType(tile) | (GetRailType(tile) << 8);
00408 case 0x43: return st->owner;
00409 case 0x44:
00410 if (IsRailWaypointTile(tile)) {
00411 return GetDepotWaypointReservation(tile) ? 7 : 4;
00412 } else {
00413 return GetRailwayStationReservation(tile) ? 7 : 4;
00414 }
00415 case 0x45:
00416 if (!HasBit(_svc.valid, 2)) { _svc.v45 = GetRailContinuationInfo(tile); SetBit(_svc.valid, 2); }
00417 return _svc.v45;
00418
00419 case 0x46:
00420 if (!HasBit(_svc.valid, 3)) { _svc.v46 = GetPlatformInfoHelper(tile, false, false, true); SetBit(_svc.valid, 3); }
00421 return _svc.v46;
00422
00423 case 0x47:
00424 if (!HasBit(_svc.valid, 4)) { _svc.v47 = GetPlatformInfoHelper(tile, true, false, true); SetBit(_svc.valid, 4); }
00425 return _svc.v47;
00426
00427 case 0x48: {
00428 CargoID cargo_type;
00429 uint32 value = 0;
00430
00431 for (cargo_type = 0; cargo_type < NUM_CARGO; cargo_type++) {
00432 if (HasBit(st->goods[cargo_type].acceptance_pickup, GoodsEntry::PICKUP)) SetBit(value, cargo_type);
00433 }
00434 return value;
00435 }
00436 case 0x49:
00437 if (!HasBit(_svc.valid, 5)) { _svc.v49 = GetPlatformInfoHelper(tile, false, true, false); SetBit(_svc.valid, 5); }
00438 return _svc.v49;
00439
00440 case 0x4A:
00441 return GetStationAnimationFrame(tile);
00442
00443
00444
00445 case 0x66:
00446 if (parameter != 0) tile = GetNearbyTile(parameter, tile);
00447 return st->TileBelongsToRailStation(tile) ? GetStationAnimationFrame(tile) : UINT_MAX;
00448
00449 case 0x67: {
00450 Axis axis = GetRailStationAxis(tile);
00451
00452 if (parameter != 0) tile = GetNearbyTile(parameter, tile);
00453
00454 Slope tileh = GetTileSlope(tile, NULL);
00455 bool swap = (axis == AXIS_Y && HasBit(tileh, SLOPE_W) != HasBit(tileh, SLOPE_E));
00456
00457 return GetNearbyTileInformation(tile) ^ (swap ? SLOPE_EW : 0);
00458 }
00459
00460 case 0x68: {
00461 TileIndex nearby_tile = GetNearbyTile(parameter, tile);
00462
00463 if (!IsRailwayStationTile(nearby_tile)) return 0xFFFFFFFF;
00464
00465 uint32 grfid = st->speclist[GetCustomStationSpecIndex(tile)].grfid;
00466 bool perpendicular = GetRailStationAxis(tile) != GetRailStationAxis(nearby_tile);
00467 bool same_station = st->TileBelongsToRailStation(nearby_tile);
00468 uint32 res = GB(GetStationGfx(nearby_tile), 1, 2) << 12 | !!perpendicular << 11 | !!same_station << 10;
00469
00470 if (IsCustomStationSpecIndex(nearby_tile)) {
00471 const StationSpecList ssl = GetStationByTile(nearby_tile)->speclist[GetCustomStationSpecIndex(nearby_tile)];
00472 res |= 1 << (ssl.grfid != grfid ? 9 : 8) | ssl.localidx;
00473 }
00474 return res;
00475 }
00476
00477
00478 case 0x82: return 50;
00479 case 0x84: return st->string_id;
00480 case 0x86: return 0;
00481 case 0x8A: return st->had_vehicle_of_type;
00482 case 0xF0: return st->facilities;
00483 case 0xF1: return st->airport_type;
00484 case 0xF2: return st->truck_stops->status;
00485 case 0xF3: return st->bus_stops->status;
00486 case 0xF6: return st->airport_flags;
00487 case 0xF7: return GB(st->airport_flags, 8, 8);
00488 case 0xFA: return Clamp(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
00489 }
00490
00491
00492 if (variable >= 0x60 && variable <= 0x65) {
00493 CargoID c = GetCargoTranslation(parameter, object->u.station.statspec->grffile);
00494
00495 if (c == CT_INVALID) return 0;
00496 const GoodsEntry *ge = &st->goods[c];
00497
00498 switch (variable) {
00499 case 0x60: return min(ge->cargo.Count(), 4095);
00500 case 0x61: return ge->days_since_pickup;
00501 case 0x62: return ge->rating;
00502 case 0x63: return ge->cargo.DaysInTransit();
00503 case 0x64: return ge->last_speed | (ge->last_age << 8);
00504 case 0x65: return GB(ge->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1) << 3;
00505 }
00506 }
00507
00508
00509 if (variable >= 0x8C && variable <= 0xEC) {
00510 const GoodsEntry *g = &st->goods[GB(variable - 0x8C, 3, 4)];
00511 switch (GB(variable - 0x8C, 0, 3)) {
00512 case 0: return g->cargo.Count();
00513 case 1: return GB(min(g->cargo.Count(), 4095), 0, 4) | (GB(g->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1) << 7);
00514 case 2: return g->days_since_pickup;
00515 case 3: return g->rating;
00516 case 4: return g->cargo.Source();
00517 case 5: return g->cargo.DaysInTransit();
00518 case 6: return g->last_speed;
00519 case 7: return g->last_age;
00520 }
00521 }
00522
00523 DEBUG(grf, 1, "Unhandled station property 0x%X", variable);
00524
00525 *available = false;
00526 return UINT_MAX;
00527 }
00528
00529
00530 static const SpriteGroup *StationResolveReal(const ResolverObject *object, const SpriteGroup *group)
00531 {
00532 const Station *st = object->u.station.st;
00533 const StationSpec *statspec = object->u.station.statspec;
00534 uint set;
00535
00536 uint cargo = 0;
00537 CargoID cargo_type = object->u.station.cargo_type;
00538
00539 if (st == NULL || statspec->sclass == STAT_CLASS_WAYP) {
00540 return group->g.real.loading[0];
00541 }
00542
00543 switch (cargo_type) {
00544 case CT_INVALID:
00545 case CT_DEFAULT_NA:
00546 case CT_PURCHASE:
00547 cargo = 0;
00548 break;
00549
00550 case CT_DEFAULT:
00551 for (cargo_type = 0; cargo_type < NUM_CARGO; cargo_type++) {
00552 cargo += st->goods[cargo_type].cargo.Count();
00553 }
00554 break;
00555
00556 default:
00557 cargo = st->goods[cargo_type].cargo.Count();
00558 break;
00559 }
00560
00561 if (HasBit(statspec->flags, SSF_DIV_BY_STATION_SIZE)) cargo /= (st->trainst_w + st->trainst_h);
00562 cargo = min(0xfff, cargo);
00563
00564 if (cargo > statspec->cargo_threshold) {
00565 if (group->g.real.num_loading > 0) {
00566 set = ((cargo - statspec->cargo_threshold) * group->g.real.num_loading) / (4096 - statspec->cargo_threshold);
00567 return group->g.real.loading[set];
00568 }
00569 } else {
00570 if (group->g.real.num_loaded > 0) {
00571 set = (cargo * group->g.real.num_loaded) / (statspec->cargo_threshold + 1);
00572 return group->g.real.loaded[set];
00573 }
00574 }
00575
00576 return group->g.real.loading[0];
00577 }
00578
00579
00580 static void NewStationResolver(ResolverObject *res, const StationSpec *statspec, const Station *st, TileIndex tile)
00581 {
00582 res->GetRandomBits = StationGetRandomBits;
00583 res->GetTriggers = StationGetTriggers;
00584 res->SetTriggers = StationSetTriggers;
00585 res->GetVariable = StationGetVariable;
00586 res->ResolveReal = StationResolveReal;
00587
00588 res->u.station.st = st;
00589 res->u.station.statspec = statspec;
00590 res->u.station.tile = tile;
00591
00592 res->callback = CBID_NO_CALLBACK;
00593 res->callback_param1 = 0;
00594 res->callback_param2 = 0;
00595 res->last_value = 0;
00596 res->trigger = 0;
00597 res->reseed = 0;
00598 res->count = 0;
00599 res->grffile = (statspec != NULL ? statspec->grffile : NULL);
00600 }
00601
00602 static const SpriteGroup *ResolveStation(ResolverObject *object)
00603 {
00604 const SpriteGroup *group;
00605 CargoID ctype = CT_DEFAULT_NA;
00606
00607 if (object->u.station.st == NULL) {
00608
00609 ctype = CT_PURCHASE;
00610 } else {
00611
00612 for (CargoID cargo = 0; cargo < NUM_CARGO; cargo++) {
00613 const CargoSpec *cs = GetCargo(cargo);
00614 if (cs->IsValid() && object->u.station.statspec->spritegroup[cargo] != NULL &&
00615 !object->u.station.st->goods[cargo].cargo.Empty()) {
00616 ctype = cargo;
00617 break;
00618 }
00619 }
00620 }
00621
00622 group = object->u.station.statspec->spritegroup[ctype];
00623 if (group == NULL) {
00624 ctype = CT_DEFAULT;
00625 group = object->u.station.statspec->spritegroup[ctype];
00626 }
00627
00628 if (group == NULL) return NULL;
00629
00630
00631 object->u.station.cargo_type = ctype;
00632
00633
00634 _svc.valid = 0;
00635
00636 return Resolve(group, object);
00637 }
00638
00639 SpriteID GetCustomStationRelocation(const StationSpec *statspec, const Station *st, TileIndex tile)
00640 {
00641 const SpriteGroup *group;
00642 ResolverObject object;
00643
00644 NewStationResolver(&object, statspec, st, tile);
00645
00646 group = ResolveStation(&object);
00647 if (group == NULL || group->type != SGT_RESULT) return 0;
00648 return group->g.result.sprite - 0x42D;
00649 }
00650
00651
00652 SpriteID GetCustomStationGroundRelocation(const StationSpec *statspec, const Station *st, TileIndex tile)
00653 {
00654 const SpriteGroup *group;
00655 ResolverObject object;
00656
00657 NewStationResolver(&object, statspec, st, tile);
00658 if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
00659 object.callback_param1 = 1;
00660 }
00661
00662 group = ResolveStation(&object);
00663 if (group == NULL || group->type != SGT_RESULT) return 0;
00664 return group->g.result.sprite - 0x42D;
00665 }
00666
00667
00668 uint16 GetStationCallback(CallbackID callback, uint32 param1, uint32 param2, const StationSpec *statspec, const Station *st, TileIndex tile)
00669 {
00670 const SpriteGroup *group;
00671 ResolverObject object;
00672
00673 NewStationResolver(&object, statspec, st, tile);
00674
00675 object.callback = callback;
00676 object.callback_param1 = param1;
00677 object.callback_param2 = param2;
00678
00679 group = ResolveStation(&object);
00680 if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
00681 return group->g.callback.result;
00682 }
00683
00684
00692 int AllocateSpecToStation(const StationSpec *statspec, Station *st, bool exec)
00693 {
00694 uint i;
00695
00696 if (statspec == NULL || st == NULL) return 0;
00697
00698 for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
00699 if (st->speclist[i].spec == NULL && st->speclist[i].grfid == 0) break;
00700 }
00701
00702 if (i == MAX_SPECLIST) {
00703
00704
00705
00706
00707
00708 for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
00709 if (st->speclist[i].spec == statspec) return i;
00710 }
00711
00712 return -1;
00713 }
00714
00715 if (exec) {
00716 if (i >= st->num_specs) {
00717 st->num_specs = i + 1;
00718 st->speclist = ReallocT(st->speclist, st->num_specs);
00719
00720 if (st->num_specs == 2) {
00721
00722 st->speclist[0].spec = NULL;
00723 st->speclist[0].grfid = 0;
00724 st->speclist[0].localidx = 0;
00725 }
00726 }
00727
00728 st->speclist[i].spec = statspec;
00729 st->speclist[i].grfid = statspec->grffile->grfid;
00730 st->speclist[i].localidx = statspec->localidx;
00731 }
00732
00733 return i;
00734 }
00735
00736
00742 void DeallocateSpecFromStation(Station *st, byte specindex)
00743 {
00744
00745 if (specindex == 0) return;
00746
00747
00748 BEGIN_TILE_LOOP(tile, st->trainst_w, st->trainst_h, st->train_tile) {
00749 if (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == st->index && IsRailwayStation(tile) && GetCustomStationSpecIndex(tile) == specindex) {
00750 return;
00751 }
00752 } END_TILE_LOOP(tile, st->trainst_w, st->trainst_h, st->train_tile)
00753
00754
00755 st->speclist[specindex].spec = NULL;
00756 st->speclist[specindex].grfid = 0;
00757 st->speclist[specindex].localidx = 0;
00758
00759
00760 if (specindex == st->num_specs - 1) {
00761 for (; st->speclist[st->num_specs - 1].grfid == 0 && st->num_specs > 1; st->num_specs--) {}
00762
00763 if (st->num_specs > 1) {
00764 st->speclist = ReallocT(st->speclist, st->num_specs);
00765 } else {
00766 free(st->speclist);
00767 st->num_specs = 0;
00768 st->speclist = NULL;
00769 st->cached_anim_triggers = 0;
00770 return;
00771 }
00772 }
00773
00774 StationUpdateAnimTriggers(st);
00775 }
00776
00786 bool DrawStationTile(int x, int y, RailType railtype, Axis axis, StationClassID sclass, uint station)
00787 {
00788 const StationSpec *statspec;
00789 const DrawTileSprites *sprites;
00790 const DrawTileSeqStruct *seq;
00791 const RailtypeInfo *rti = GetRailTypeInfo(railtype);
00792 SpriteID relocation;
00793 SpriteID image;
00794 SpriteID palette = COMPANY_SPRITE_COLOUR(_local_company);
00795 uint tile = 2;
00796
00797 statspec = GetCustomStationSpec(sclass, station);
00798 if (statspec == NULL) return false;
00799
00800 relocation = GetCustomStationRelocation(statspec, NULL, INVALID_TILE);
00801
00802 if (HasBit(statspec->callbackmask, CBM_STATION_SPRITE_LAYOUT)) {
00803 uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0x2110000, 0, statspec, NULL, INVALID_TILE);
00804 if (callback != CALLBACK_FAILED) tile = callback;
00805 }
00806
00807 if (statspec->renderdata == NULL) {
00808 sprites = GetStationTileLayout(STATION_RAIL, tile + axis);
00809 } else {
00810 sprites = &statspec->renderdata[(tile < statspec->tiles) ? tile + axis : (uint)axis];
00811 }
00812
00813 image = sprites->ground.sprite;
00814 SpriteID pal = sprites->ground.pal;
00815 if (HasBit(image, SPRITE_MODIFIER_USE_OFFSET)) {
00816 image += GetCustomStationGroundRelocation(statspec, NULL, INVALID_TILE);
00817 image += rti->custom_ground_offset;
00818 } else {
00819 image += rti->total_offset;
00820 }
00821
00822 DrawSprite(image, GroundSpritePaletteTransform(image, pal, palette), x, y);
00823
00824 Point child_offset = {0, 0};
00825
00826 foreach_draw_tile_seq(seq, sprites->seq) {
00827 image = seq->image.sprite;
00828 if (HasBit(image, SPRITE_MODIFIER_USE_OFFSET)) {
00829 image += rti->total_offset;
00830 } else {
00831 image += relocation;
00832 }
00833
00834 pal = SpriteLayoutPaletteTransform(image, seq->image.pal, palette);
00835
00836 if ((byte)seq->delta_z != 0x80) {
00837 Point pt = RemapCoords(seq->delta_x, seq->delta_y, seq->delta_z);
00838 DrawSprite(image, pal, x + pt.x, y + pt.y);
00839
00840 const Sprite *spr = GetSprite(image & SPRITE_MASK, ST_NORMAL);
00841 child_offset.x = pt.x + spr->x_offs;
00842 child_offset.y = pt.y + spr->y_offs;
00843 } else {
00844
00845 DrawSprite(image, pal, x + child_offset.x + seq->delta_x, y + child_offset.y + seq->delta_y);
00846 }
00847 }
00848
00849 return true;
00850 }
00851
00852
00853 const StationSpec *GetStationSpec(TileIndex t)
00854 {
00855 const Station *st;
00856 uint specindex;
00857
00858 if (!IsCustomStationSpecIndex(t)) return NULL;
00859
00860 st = GetStationByTile(t);
00861 specindex = GetCustomStationSpecIndex(t);
00862 return specindex < st->num_specs ? st->speclist[specindex].spec : NULL;
00863 }
00864
00865
00866
00867
00868 bool IsStationTileBlocked(TileIndex tile)
00869 {
00870 const StationSpec *statspec = GetStationSpec(tile);
00871
00872 return statspec != NULL && HasBit(statspec->blocked, GetStationGfx(tile));
00873 }
00874
00875
00876
00877 bool IsStationTileElectrifiable(TileIndex tile)
00878 {
00879 const StationSpec *statspec = GetStationSpec(tile);
00880
00881 return
00882 statspec == NULL ||
00883 HasBit(statspec->pylons, GetStationGfx(tile)) ||
00884 !HasBit(statspec->wires, GetStationGfx(tile));
00885 }
00886
00887 void AnimateStationTile(TileIndex tile)
00888 {
00889 const StationSpec *ss = GetStationSpec(tile);
00890 if (ss == NULL) return;
00891
00892 const Station *st = GetStationByTile(tile);
00893
00894 uint8 animation_speed = ss->anim_speed;
00895
00896 if (HasBit(ss->callbackmask, CBM_STATION_ANIMATION_SPEED)) {
00897 uint16 callback = GetStationCallback(CBID_STATION_ANIMATION_SPEED, 0, 0, ss, st, tile);
00898 if (callback != CALLBACK_FAILED) animation_speed = Clamp(callback & 0xFF, 0, 16);
00899 }
00900
00901 if (_tick_counter % (1 << animation_speed) != 0) return;
00902
00903 uint8 frame = GetStationAnimationFrame(tile);
00904 uint8 num_frames = ss->anim_frames;
00905
00906 bool frame_set_by_callback = false;
00907
00908 if (HasBit(ss->callbackmask, CBM_STATION_ANIMATION_NEXT_FRAME)) {
00909 uint32 param = HasBit(ss->flags, SSF_CB141_RANDOM_BITS) ? Random() : 0;
00910 uint16 callback = GetStationCallback(CBID_STATION_ANIM_NEXT_FRAME, param, 0, ss, st, tile);
00911
00912 if (callback != CALLBACK_FAILED) {
00913 frame_set_by_callback = true;
00914
00915 switch (callback & 0xFF) {
00916 case 0xFF:
00917 DeleteAnimatedTile(tile);
00918 break;
00919
00920 case 0xFE:
00921 frame_set_by_callback = false;
00922 break;
00923
00924 default:
00925 frame = callback & 0xFF;
00926 break;
00927 }
00928
00929
00930
00931 if (GB(callback, 8, 7) != 0) PlayTileSound(ss->grffile, GB(callback, 8, 7), tile);
00932 }
00933 }
00934
00935 if (!frame_set_by_callback) {
00936 if (frame < num_frames) {
00937 frame++;
00938 } else if (frame == num_frames && HasBit(ss->anim_status, 0)) {
00939
00940 frame = 0;
00941 } else {
00942
00943 DeleteAnimatedTile(tile);
00944 }
00945 }
00946
00947 SetStationAnimationFrame(tile, frame);
00948 MarkTileDirtyByTile(tile);
00949 }
00950
00951
00952 static void ChangeStationAnimationFrame(const StationSpec *ss, const Station *st, TileIndex tile, uint16 random_bits, StatAnimTrigger trigger, CargoID cargo_type)
00953 {
00954 uint16 callback = GetStationCallback(CBID_STATION_ANIM_START_STOP, (random_bits << 16) | Random(), (uint8)trigger | (cargo_type << 8), ss, st, tile);
00955 if (callback == CALLBACK_FAILED) return;
00956
00957 switch (callback & 0xFF) {
00958 case 0xFD: break;
00959 case 0xFE: AddAnimatedTile(tile); break;
00960 case 0xFF: DeleteAnimatedTile(tile); break;
00961 default:
00962 SetStationAnimationFrame(tile, callback);
00963 AddAnimatedTile(tile);
00964 break;
00965 }
00966
00967
00968
00969 if (GB(callback, 8, 7) != 0) PlayTileSound(ss->grffile, GB(callback, 8, 7), tile);
00970 }
00971
00972 enum TriggerArea {
00973 TA_TILE,
00974 TA_PLATFORM,
00975 TA_WHOLE,
00976 };
00977
00978 struct TileArea {
00979 TileIndex tile;
00980 uint8 w;
00981 uint8 h;
00982
00983 TileArea(const Station *st, TileIndex tile, TriggerArea ta)
00984 {
00985 switch (ta) {
00986 default: NOT_REACHED();
00987
00988 case TA_TILE:
00989 this->tile = tile;
00990 this->w = 1;
00991 this->h = 1;
00992 break;
00993
00994 case TA_PLATFORM: {
00995 TileIndex start, end;
00996 Axis axis = GetRailStationAxis(tile);
00997 TileIndexDiff delta = TileOffsByDiagDir(AxisToDiagDir(axis));
00998
00999 for (end = tile; IsRailwayStationTile(end + delta) && IsCompatibleTrainStationTile(tile, end + delta); end += delta) { }
01000 for (start = tile; IsRailwayStationTile(start - delta) && IsCompatibleTrainStationTile(tile, start - delta); start -= delta) { }
01001
01002 this->tile = start;
01003 this->w = TileX(end) - TileX(start) + 1;
01004 this->h = TileY(end) - TileY(start) + 1;
01005 break;
01006 }
01007
01008 case TA_WHOLE:
01009 this->tile = st->train_tile;
01010 this->w = st->trainst_w + 1;
01011 this->h = st->trainst_h + 1;
01012 break;
01013 }
01014 }
01015 };
01016
01017 void StationAnimationTrigger(const Station *st, TileIndex tile, StatAnimTrigger trigger, CargoID cargo_type)
01018 {
01019
01020 static const TriggerArea tas[] = {
01021 TA_TILE, TA_WHOLE, TA_WHOLE, TA_PLATFORM, TA_PLATFORM, TA_PLATFORM, TA_WHOLE
01022 };
01023
01024
01025 if (st == NULL) st = GetStationByTile(tile);
01026
01027
01028
01029 if (!HasBit(st->cached_anim_triggers, trigger)) return;
01030
01031 uint16 random_bits = Random();
01032 TileArea area = TileArea(st, tile, tas[trigger]);
01033
01034 for (uint y = 0; y < area.h; y++) {
01035 for (uint x = 0; x < area.w; x++) {
01036 if (st->TileBelongsToRailStation(area.tile)) {
01037 const StationSpec *ss = GetStationSpec(area.tile);
01038 if (ss != NULL && HasBit(ss->anim_triggers, trigger)) {
01039 CargoID cargo;
01040 if (cargo_type == CT_INVALID) {
01041 cargo = CT_INVALID;
01042 } else {
01043 cargo = GetReverseCargoTranslation(cargo_type, ss->grffile);
01044 }
01045 ChangeStationAnimationFrame(ss, st, area.tile, random_bits, trigger, cargo);
01046 }
01047 }
01048 area.tile += TileDiffXY(1, 0);
01049 }
01050 area.tile += TileDiffXY(-area.w, 1);
01051 }
01052 }
01053
01058 void StationUpdateAnimTriggers(Station *st)
01059 {
01060 st->cached_anim_triggers = 0;
01061
01062
01063
01064 for (uint i = 0; i < st->num_specs; i++) {
01065 const StationSpec *ss = st->speclist[i].spec;
01066 if (ss != NULL) st->cached_anim_triggers |= ss->anim_triggers;
01067 }
01068 }