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00012 #include "stdafx.h"
00013 #include "variables.h"
00014 #include "debug.h"
00015 #include "station_base.h"
00016 #include "waypoint_base.h"
00017 #include "roadstop_base.h"
00018 #include "newgrf_cargo.h"
00019 #include "newgrf_commons.h"
00020 #include "newgrf_station.h"
00021 #include "newgrf_spritegroup.h"
00022 #include "newgrf_sound.h"
00023 #include "town.h"
00024 #include "newgrf_town.h"
00025 #include "date_func.h"
00026 #include "company_func.h"
00027 #include "animated_tile_func.h"
00028 #include "functions.h"
00029 #include "tunnelbridge_map.h"
00030 #include "newgrf.h"
00031 #include "core/random_func.hpp"
00032
00033 #include "table/strings.h"
00034
00035 static StationClass _station_classes[STAT_CLASS_MAX];
00036
00037 enum {
00038 MAX_SPECLIST = 255,
00039 };
00040
00041 enum TriggerArea {
00042 TA_TILE,
00043 TA_PLATFORM,
00044 TA_WHOLE,
00045 };
00046
00047 struct ETileArea : TileArea {
00048 ETileArea(const BaseStation *st, TileIndex tile, TriggerArea ta)
00049 {
00050 switch (ta) {
00051 default: NOT_REACHED();
00052
00053 case TA_TILE:
00054 this->tile = tile;
00055 this->w = 1;
00056 this->h = 1;
00057 break;
00058
00059 case TA_PLATFORM: {
00060 TileIndex start, end;
00061 Axis axis = GetRailStationAxis(tile);
00062 TileIndexDiff delta = TileOffsByDiagDir(AxisToDiagDir(axis));
00063
00064 for (end = tile; IsRailStationTile(end + delta) && IsCompatibleTrainStationTile(tile, end + delta); end += delta) { }
00065 for (start = tile; IsRailStationTile(start - delta) && IsCompatibleTrainStationTile(tile, start - delta); start -= delta) { }
00066
00067 this->tile = start;
00068 this->w = TileX(end) - TileX(start) + 1;
00069 this->h = TileY(end) - TileY(start) + 1;
00070 break;
00071 }
00072
00073 case TA_WHOLE:
00074 st->GetTileArea(this, Station::IsExpected(st) ? STATION_RAIL : STATION_WAYPOINT);
00075 break;
00076 }
00077 }
00078 };
00079
00080
00086 void ResetStationClasses()
00087 {
00088 for (StationClassID i = STAT_CLASS_BEGIN; i < STAT_CLASS_MAX; i++) {
00089 _station_classes[i].id = 0;
00090 _station_classes[i].name = STR_EMPTY;
00091 _station_classes[i].stations = 0;
00092
00093 free(_station_classes[i].spec);
00094 _station_classes[i].spec = NULL;
00095 }
00096
00097
00098 _station_classes[0].id = 'DFLT';
00099 _station_classes[0].name = STR_STATION_CLASS_DFLT;
00100 _station_classes[0].stations = 1;
00101 _station_classes[0].spec = MallocT<StationSpec*>(1);
00102 _station_classes[0].spec[0] = NULL;
00103
00104 _station_classes[1].id = 'WAYP';
00105 _station_classes[1].name = STR_STATION_CLASS_WAYP;
00106 _station_classes[1].stations = 1;
00107 _station_classes[1].spec = MallocT<StationSpec*>(1);
00108 _station_classes[1].spec[0] = NULL;
00109 }
00110
00116 StationClassID AllocateStationClass(uint32 cls)
00117 {
00118 for (StationClassID i = STAT_CLASS_BEGIN; i < STAT_CLASS_MAX; i++) {
00119 if (_station_classes[i].id == cls) {
00120
00121 return i;
00122 } else if (_station_classes[i].id == 0) {
00123
00124 _station_classes[i].id = cls;
00125 return i;
00126 }
00127 }
00128
00129 grfmsg(2, "StationClassAllocate: already allocated %d classes, using default", STAT_CLASS_MAX);
00130 return STAT_CLASS_DFLT;
00131 }
00132
00134 void SetStationClassName(StationClassID sclass, StringID name)
00135 {
00136 assert(sclass < STAT_CLASS_MAX);
00137 _station_classes[sclass].name = name;
00138 }
00139
00141 StringID GetStationClassName(StationClassID sclass)
00142 {
00143 assert(sclass < STAT_CLASS_MAX);
00144 return _station_classes[sclass].name;
00145 }
00146
00151 uint GetNumStationClasses()
00152 {
00153 uint i;
00154 for (i = 0; i < STAT_CLASS_MAX && _station_classes[i].id != 0; i++) {}
00155 return i;
00156 }
00157
00163 uint GetNumCustomStations(StationClassID sclass)
00164 {
00165 assert(sclass < STAT_CLASS_MAX);
00166 return _station_classes[sclass].stations;
00167 }
00168
00173 void SetCustomStationSpec(StationSpec *statspec)
00174 {
00175 StationClass *station_class;
00176 int i;
00177
00178
00179 if (statspec->allocated) return;
00180
00181 assert(statspec->sclass < STAT_CLASS_MAX);
00182 station_class = &_station_classes[statspec->sclass];
00183
00184 i = station_class->stations++;
00185 station_class->spec = ReallocT(station_class->spec, station_class->stations);
00186
00187 station_class->spec[i] = statspec;
00188 statspec->allocated = true;
00189 }
00190
00197 const StationSpec *GetCustomStationSpec(StationClassID sclass, uint station)
00198 {
00199 assert(sclass < STAT_CLASS_MAX);
00200 if (station < _station_classes[sclass].stations)
00201 return _station_classes[sclass].spec[station];
00202
00203
00204
00205 return NULL;
00206 }
00207
00215 const StationSpec *GetCustomStationSpecByGrf(uint32 grfid, byte localidx, int *index)
00216 {
00217 uint j;
00218
00219 for (StationClassID i = STAT_CLASS_BEGIN; i < STAT_CLASS_MAX; i++) {
00220 for (j = 0; j < _station_classes[i].stations; j++) {
00221 const StationSpec *statspec = _station_classes[i].spec[j];
00222 if (statspec == NULL) continue;
00223 if (statspec->grffile->grfid == grfid && statspec->localidx == localidx) {
00224 if (index != NULL) *index = j;
00225 return statspec;
00226 }
00227 }
00228 }
00229
00230 return NULL;
00231 }
00232
00233
00234
00235
00236
00237
00238
00239
00240
00241 uint32 GetPlatformInfo(Axis axis, byte tile, int platforms, int length, int x, int y, bool centred)
00242 {
00243 uint32 retval = 0;
00244
00245 if (axis == AXIS_X) {
00246 Swap(platforms, length);
00247 Swap(x, y);
00248 }
00249
00250
00251 platforms = min(15, platforms);
00252 length = min(15, length);
00253 x = min(15, x);
00254 y = min(15, y);
00255 if (centred) {
00256 x -= platforms / 2;
00257 y -= length / 2;
00258 SB(retval, 0, 4, y & 0xF);
00259 SB(retval, 4, 4, x & 0xF);
00260 } else {
00261 SB(retval, 0, 4, y);
00262 SB(retval, 4, 4, length - y - 1);
00263 SB(retval, 8, 4, x);
00264 SB(retval, 12, 4, platforms - x - 1);
00265 }
00266 SB(retval, 16, 4, length);
00267 SB(retval, 20, 4, platforms);
00268 SB(retval, 24, 4, tile);
00269
00270 return retval;
00271 }
00272
00273
00274
00275
00276
00277
00278 static TileIndex FindRailStationEnd(TileIndex tile, TileIndexDiff delta, bool check_type, bool check_axis)
00279 {
00280 byte orig_type = 0;
00281 Axis orig_axis = AXIS_X;
00282 StationID sid = GetStationIndex(tile);
00283
00284 if (check_type) orig_type = GetCustomStationSpecIndex(tile);
00285 if (check_axis) orig_axis = GetRailStationAxis(tile);
00286
00287 while (true) {
00288 TileIndex new_tile = TILE_ADD(tile, delta);
00289
00290 if (!IsTileType(new_tile, MP_STATION) || GetStationIndex(new_tile) != sid) break;
00291 if (!HasStationRail(new_tile)) break;
00292 if (check_type && GetCustomStationSpecIndex(new_tile) != orig_type) break;
00293 if (check_axis && GetRailStationAxis(new_tile) != orig_axis) break;
00294
00295 tile = new_tile;
00296 }
00297 return tile;
00298 }
00299
00300
00301 static uint32 GetPlatformInfoHelper(TileIndex tile, bool check_type, bool check_axis, bool centred)
00302 {
00303 int tx = TileX(tile);
00304 int ty = TileY(tile);
00305 int sx = TileX(FindRailStationEnd(tile, TileDiffXY(-1, 0), check_type, check_axis));
00306 int sy = TileY(FindRailStationEnd(tile, TileDiffXY( 0, -1), check_type, check_axis));
00307 int ex = TileX(FindRailStationEnd(tile, TileDiffXY( 1, 0), check_type, check_axis)) + 1;
00308 int ey = TileY(FindRailStationEnd(tile, TileDiffXY( 0, 1), check_type, check_axis)) + 1;
00309
00310 tx -= sx; ex -= sx;
00311 ty -= sy; ey -= sy;
00312
00313 return GetPlatformInfo(GetRailStationAxis(tile), GetStationGfx(tile), ex, ey, tx, ty, centred);
00314 }
00315
00316
00317 static uint32 GetRailContinuationInfo(TileIndex tile)
00318 {
00319
00320 static const Direction x_dir[8] = { DIR_SW, DIR_NE, DIR_SE, DIR_NW, DIR_S, DIR_E, DIR_W, DIR_N };
00321 static const DiagDirection x_exits[8] = { DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SW, DIAGDIR_NE };
00322
00323
00324 static const Direction y_dir[8] = { DIR_SE, DIR_NW, DIR_SW, DIR_NE, DIR_S, DIR_W, DIR_E, DIR_N };
00325 static const DiagDirection y_exits[8] = { DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NW, DIAGDIR_SE, DIAGDIR_NW };
00326
00327 Axis axis = GetRailStationAxis(tile);
00328
00329
00330 const Direction *dir = axis == AXIS_X ? x_dir : y_dir;
00331 const DiagDirection *diagdir = axis == AXIS_X ? x_exits : y_exits;
00332
00333 uint32 res = 0;
00334 uint i;
00335
00336 for (i = 0; i < lengthof(x_dir); i++, dir++, diagdir++) {
00337 TileIndex neighbour_tile = tile + TileOffsByDir(*dir);
00338 TrackBits trackbits = TrackStatusToTrackBits(GetTileTrackStatus(neighbour_tile, TRANSPORT_RAIL, 0));
00339 if (trackbits != TRACK_BIT_NONE) {
00340
00341 SetBit(res, i + 8);
00342
00343
00344
00345 if (IsTileType(neighbour_tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(neighbour_tile) != *diagdir) {
00346 continue;
00347 }
00348
00349
00350 if (trackbits & DiagdirReachesTracks(*diagdir)) SetBit(res, i);
00351 }
00352 }
00353
00354 return res;
00355 }
00356
00357
00358
00359 static uint32 StationGetRandomBits(const ResolverObject *object)
00360 {
00361 const BaseStation *st = object->u.station.st;
00362 const TileIndex tile = object->u.station.tile;
00363 return (st == NULL ? 0 : st->random_bits) | (tile == INVALID_TILE ? 0 : GetStationTileRandomBits(tile) << 16);
00364 }
00365
00366
00367 static uint32 StationGetTriggers(const ResolverObject *object)
00368 {
00369 const BaseStation *st = object->u.station.st;
00370 return st == NULL ? 0 : st->waiting_triggers;
00371 }
00372
00373
00374 static void StationSetTriggers(const ResolverObject *object, int triggers)
00375 {
00376 BaseStation *st = const_cast<BaseStation *>(object->u.station.st);
00377 assert(st != NULL);
00378 st->waiting_triggers = triggers;
00379 }
00380
00386 static struct {
00387 uint32 v40;
00388 uint32 v41;
00389 uint32 v45;
00390 uint32 v46;
00391 uint32 v47;
00392 uint32 v49;
00393 uint8 valid;
00394 } _svc;
00395
00396 static uint32 StationGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00397 {
00398 const BaseStation *st = object->u.station.st;
00399 TileIndex tile = object->u.station.tile;
00400
00401 if (object->scope == VSG_SCOPE_PARENT) {
00402
00403 const Town *t;
00404
00405 if (st != NULL) {
00406 t = st->town;
00407 } else if (tile != INVALID_TILE) {
00408 t = ClosestTownFromTile(tile, UINT_MAX);
00409 } else {
00410 *available = false;
00411 return UINT_MAX;
00412 }
00413
00414 return TownGetVariable(variable, parameter, available, t);
00415 }
00416
00417 if (st == NULL) {
00418
00419 switch (variable) {
00420 case 0x40:
00421 case 0x41:
00422 case 0x46:
00423 case 0x47:
00424 case 0x49: return 0x2110000;
00425 case 0x42: return 0;
00426 case 0x43: return _current_company;
00427 case 0x44: return 2;
00428 case 0xFA: return Clamp(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
00429 }
00430
00431 *available = false;
00432 return UINT_MAX;
00433 }
00434
00435 switch (variable) {
00436
00437 case 0x40:
00438 if (!HasBit(_svc.valid, 0)) { _svc.v40 = GetPlatformInfoHelper(tile, false, false, false); SetBit(_svc.valid, 0); }
00439 return _svc.v40;
00440
00441 case 0x41:
00442 if (!HasBit(_svc.valid, 1)) { _svc.v41 = GetPlatformInfoHelper(tile, true, false, false); SetBit(_svc.valid, 1); }
00443 return _svc.v41;
00444
00445 case 0x42: return GetTerrainType(tile) | (GetRailType(tile) << 8);
00446 case 0x43: return st->owner;
00447 case 0x44: return HasStationReservation(tile) ? 7 : 4;
00448 case 0x45:
00449 if (!HasBit(_svc.valid, 2)) { _svc.v45 = GetRailContinuationInfo(tile); SetBit(_svc.valid, 2); }
00450 return _svc.v45;
00451
00452 case 0x46:
00453 if (!HasBit(_svc.valid, 3)) { _svc.v46 = GetPlatformInfoHelper(tile, false, false, true); SetBit(_svc.valid, 3); }
00454 return _svc.v46;
00455
00456 case 0x47:
00457 if (!HasBit(_svc.valid, 4)) { _svc.v47 = GetPlatformInfoHelper(tile, true, false, true); SetBit(_svc.valid, 4); }
00458 return _svc.v47;
00459
00460 case 0x49:
00461 if (!HasBit(_svc.valid, 5)) { _svc.v49 = GetPlatformInfoHelper(tile, false, true, false); SetBit(_svc.valid, 5); }
00462 return _svc.v49;
00463
00464 case 0x4A:
00465 return GetStationAnimationFrame(tile);
00466
00467
00468
00469 case 0x66:
00470 if (parameter != 0) tile = GetNearbyTile(parameter, tile);
00471 return st->TileBelongsToRailStation(tile) ? GetStationAnimationFrame(tile) : UINT_MAX;
00472
00473 case 0x67: {
00474 Axis axis = GetRailStationAxis(tile);
00475
00476 if (parameter != 0) tile = GetNearbyTile(parameter, tile);
00477
00478 Slope tileh = GetTileSlope(tile, NULL);
00479 bool swap = (axis == AXIS_Y && HasBit(tileh, CORNER_W) != HasBit(tileh, CORNER_E));
00480
00481 return GetNearbyTileInformation(tile) ^ (swap ? SLOPE_EW : 0);
00482 }
00483
00484 case 0x68: {
00485 TileIndex nearby_tile = GetNearbyTile(parameter, tile);
00486
00487 if (!HasStationTileRail(nearby_tile)) return 0xFFFFFFFF;
00488
00489 uint32 grfid = st->speclist[GetCustomStationSpecIndex(tile)].grfid;
00490 bool perpendicular = GetRailStationAxis(tile) != GetRailStationAxis(nearby_tile);
00491 bool same_station = st->TileBelongsToRailStation(nearby_tile);
00492 uint32 res = GB(GetStationGfx(nearby_tile), 1, 2) << 12 | !!perpendicular << 11 | !!same_station << 10;
00493
00494 if (IsCustomStationSpecIndex(nearby_tile)) {
00495 const StationSpecList ssl = BaseStation::GetByTile(nearby_tile)->speclist[GetCustomStationSpecIndex(nearby_tile)];
00496 res |= 1 << (ssl.grfid != grfid ? 9 : 8) | ssl.localidx;
00497 }
00498 return res;
00499 }
00500
00501
00502 case 0x82: return 50;
00503 case 0x84: return st->string_id;
00504 case 0x86: return 0;
00505 case 0xF0: return st->facilities;
00506 case 0xFA: return Clamp(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
00507 }
00508
00509 return st->GetNewGRFVariable(object, variable, parameter, available);
00510 }
00511
00512 uint32 Station::GetNewGRFVariable(const ResolverObject *object, byte variable, byte parameter, bool *available) const
00513 {
00514 switch (variable) {
00515 case 0x48: {
00516 CargoID cargo_type;
00517 uint32 value = 0;
00518
00519 for (cargo_type = 0; cargo_type < NUM_CARGO; cargo_type++) {
00520 if (HasBit(this->goods[cargo_type].acceptance_pickup, GoodsEntry::PICKUP)) SetBit(value, cargo_type);
00521 }
00522 return value;
00523 }
00524
00525 case 0x8A: return this->had_vehicle_of_type;
00526 case 0xF1: return this->airport_type;
00527 case 0xF2: return this->truck_stops->status;
00528 case 0xF3: return this->bus_stops->status;
00529 case 0xF6: return this->airport_flags;
00530 case 0xF7: return GB(this->airport_flags, 8, 8);
00531 }
00532
00533
00534 if (variable >= 0x60 && variable <= 0x65) {
00535 CargoID c = GetCargoTranslation(parameter, object->u.station.statspec->grffile);
00536
00537 if (c == CT_INVALID) return 0;
00538 const GoodsEntry *ge = &this->goods[c];
00539
00540 switch (variable) {
00541 case 0x60: return min(ge->cargo.Count(), 4095);
00542 case 0x61: return ge->days_since_pickup;
00543 case 0x62: return ge->rating;
00544 case 0x63: return ge->cargo.DaysInTransit();
00545 case 0x64: return ge->last_speed | (ge->last_age << 8);
00546 case 0x65: return GB(ge->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1) << 3;
00547 }
00548 }
00549
00550
00551 if (variable >= 0x8C && variable <= 0xEC) {
00552 const GoodsEntry *g = &this->goods[GB(variable - 0x8C, 3, 4)];
00553 switch (GB(variable - 0x8C, 0, 3)) {
00554 case 0: return g->cargo.Count();
00555 case 1: return GB(min(g->cargo.Count(), 4095), 0, 4) | (GB(g->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1) << 7);
00556 case 2: return g->days_since_pickup;
00557 case 3: return g->rating;
00558 case 4: return g->cargo.Source();
00559 case 5: return g->cargo.DaysInTransit();
00560 case 6: return g->last_speed;
00561 case 7: return g->last_age;
00562 }
00563 }
00564
00565 DEBUG(grf, 1, "Unhandled station variable 0x%X", variable);
00566
00567 *available = false;
00568 return UINT_MAX;
00569 }
00570
00571 uint32 Waypoint::GetNewGRFVariable(const ResolverObject *object, byte variable, byte parameter, bool *available) const
00572 {
00573 switch (variable) {
00574 case 0x48: return 0;
00575 case 0x8A: return HVOT_WAYPOINT;
00576 case 0xF1: return 0;
00577 case 0xF2: return 0;
00578 case 0xF3: return 0;
00579 case 0xF6: return 0;
00580 case 0xF7: return 0;
00581 }
00582
00583
00584 if (variable >= 0x60 && variable <= 0x65) {
00585 return 0;
00586 }
00587
00588
00589 if (variable >= 0x8C && variable <= 0xEC) {
00590 switch (GB(variable - 0x8C, 0, 3)) {
00591 case 3: return INITIAL_STATION_RATING;
00592 case 4: return INVALID_STATION;
00593 default: return 0;
00594 }
00595 }
00596
00597 DEBUG(grf, 1, "Unhandled station variable 0x%X", variable);
00598
00599 *available = false;
00600 return UINT_MAX;
00601 }
00602
00603 static const SpriteGroup *StationResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
00604 {
00605 const BaseStation *bst = object->u.station.st;
00606 const StationSpec *statspec = object->u.station.statspec;
00607 uint set;
00608
00609 uint cargo = 0;
00610 CargoID cargo_type = object->u.station.cargo_type;
00611
00612 if (bst == NULL || statspec->sclass == STAT_CLASS_WAYP) {
00613 return group->loading[0];
00614 }
00615
00616 const Station *st = Station::From(bst);
00617
00618 switch (cargo_type) {
00619 case CT_INVALID:
00620 case CT_DEFAULT_NA:
00621 case CT_PURCHASE:
00622 cargo = 0;
00623 break;
00624
00625 case CT_DEFAULT:
00626 for (cargo_type = 0; cargo_type < NUM_CARGO; cargo_type++) {
00627 cargo += st->goods[cargo_type].cargo.Count();
00628 }
00629 break;
00630
00631 default:
00632 cargo = st->goods[cargo_type].cargo.Count();
00633 break;
00634 }
00635
00636 if (HasBit(statspec->flags, SSF_DIV_BY_STATION_SIZE)) cargo /= (st->train_station.w + st->train_station.h);
00637 cargo = min(0xfff, cargo);
00638
00639 if (cargo > statspec->cargo_threshold) {
00640 if (group->num_loading > 0) {
00641 set = ((cargo - statspec->cargo_threshold) * group->num_loading) / (4096 - statspec->cargo_threshold);
00642 return group->loading[set];
00643 }
00644 } else {
00645 if (group->num_loaded > 0) {
00646 set = (cargo * group->num_loaded) / (statspec->cargo_threshold + 1);
00647 return group->loaded[set];
00648 }
00649 }
00650
00651 return group->loading[0];
00652 }
00653
00654
00655 static void NewStationResolver(ResolverObject *res, const StationSpec *statspec, const BaseStation *st, TileIndex tile)
00656 {
00657 res->GetRandomBits = StationGetRandomBits;
00658 res->GetTriggers = StationGetTriggers;
00659 res->SetTriggers = StationSetTriggers;
00660 res->GetVariable = StationGetVariable;
00661 res->ResolveReal = StationResolveReal;
00662
00663 res->u.station.st = st;
00664 res->u.station.statspec = statspec;
00665 res->u.station.tile = tile;
00666
00667 res->callback = CBID_NO_CALLBACK;
00668 res->callback_param1 = 0;
00669 res->callback_param2 = 0;
00670 res->last_value = 0;
00671 res->trigger = 0;
00672 res->reseed = 0;
00673 res->count = 0;
00674 res->grffile = (statspec != NULL ? statspec->grffile : NULL);
00675 }
00676
00677 static const SpriteGroup *ResolveStation(ResolverObject *object)
00678 {
00679 const SpriteGroup *group;
00680 CargoID ctype = CT_DEFAULT_NA;
00681
00682 if (object->u.station.st == NULL) {
00683
00684 ctype = CT_PURCHASE;
00685 } else if (Station::IsExpected(object->u.station.st)) {
00686 const Station *st = Station::From(object->u.station.st);
00687
00688 const CargoSpec *cs;
00689 FOR_ALL_CARGOSPECS(cs) {
00690 if (object->u.station.statspec->spritegroup[cs->Index()] != NULL &&
00691 !st->goods[cs->Index()].cargo.Empty()) {
00692 ctype = cs->Index();
00693 break;
00694 }
00695 }
00696 }
00697
00698 group = object->u.station.statspec->spritegroup[ctype];
00699 if (group == NULL) {
00700 ctype = CT_DEFAULT;
00701 group = object->u.station.statspec->spritegroup[ctype];
00702 }
00703
00704 if (group == NULL) return NULL;
00705
00706
00707 object->u.station.cargo_type = ctype;
00708
00709
00710 _svc.valid = 0;
00711
00712 return SpriteGroup::Resolve(group, object);
00713 }
00714
00715 SpriteID GetCustomStationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile)
00716 {
00717 const SpriteGroup *group;
00718 ResolverObject object;
00719
00720 NewStationResolver(&object, statspec, st, tile);
00721
00722 group = ResolveStation(&object);
00723 if (group == NULL || group->type != SGT_RESULT) return 0;
00724 return group->GetResult() - 0x42D;
00725 }
00726
00727
00728 SpriteID GetCustomStationGroundRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile)
00729 {
00730 const SpriteGroup *group;
00731 ResolverObject object;
00732
00733 NewStationResolver(&object, statspec, st, tile);
00734 if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
00735 object.callback_param1 = 1;
00736 }
00737
00738 group = ResolveStation(&object);
00739 if (group == NULL || group->type != SGT_RESULT) return 0;
00740 return group->GetResult() - 0x42D;
00741 }
00742
00743
00744 SpriteID GetCustomStationFoundationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile)
00745 {
00746 const SpriteGroup *group;
00747 ResolverObject object;
00748
00749 NewStationResolver(&object, statspec, st, tile);
00750 object.callback_param1 = 2;
00751
00752 group = ResolveStation(&object);
00753 if (group == NULL || group->type != SGT_RESULT) return 0;
00754 return group->GetResult() + GetRegister(0x100);
00755 }
00756
00757
00758 uint16 GetStationCallback(CallbackID callback, uint32 param1, uint32 param2, const StationSpec *statspec, const BaseStation *st, TileIndex tile)
00759 {
00760 const SpriteGroup *group;
00761 ResolverObject object;
00762
00763 NewStationResolver(&object, statspec, st, tile);
00764
00765 object.callback = callback;
00766 object.callback_param1 = param1;
00767 object.callback_param2 = param2;
00768
00769 group = ResolveStation(&object);
00770 if (group == NULL) return CALLBACK_FAILED;
00771 return group->GetCallbackResult();
00772 }
00773
00774
00782 int AllocateSpecToStation(const StationSpec *statspec, BaseStation *st, bool exec)
00783 {
00784 uint i;
00785
00786 if (statspec == NULL || st == NULL) return 0;
00787
00788 for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
00789 if (st->speclist[i].spec == NULL && st->speclist[i].grfid == 0) break;
00790 }
00791
00792 if (i == MAX_SPECLIST) {
00793
00794
00795
00796
00797
00798 for (i = 1; i < st->num_specs && i < MAX_SPECLIST; i++) {
00799 if (st->speclist[i].spec == statspec) return i;
00800 }
00801
00802 return -1;
00803 }
00804
00805 if (exec) {
00806 if (i >= st->num_specs) {
00807 st->num_specs = i + 1;
00808 st->speclist = ReallocT(st->speclist, st->num_specs);
00809
00810 if (st->num_specs == 2) {
00811
00812 st->speclist[0].spec = NULL;
00813 st->speclist[0].grfid = 0;
00814 st->speclist[0].localidx = 0;
00815 }
00816 }
00817
00818 st->speclist[i].spec = statspec;
00819 st->speclist[i].grfid = statspec->grffile->grfid;
00820 st->speclist[i].localidx = statspec->localidx;
00821 }
00822
00823 return i;
00824 }
00825
00826
00832 void DeallocateSpecFromStation(BaseStation *st, byte specindex)
00833 {
00834
00835 if (specindex == 0) return;
00836
00837 ETileArea area = ETileArea(st, INVALID_TILE, TA_WHOLE);
00838
00839 TILE_AREA_LOOP(tile, area) {
00840 if (st->TileBelongsToRailStation(tile) && GetCustomStationSpecIndex(tile) == specindex) {
00841 return;
00842 }
00843 }
00844
00845
00846 st->speclist[specindex].spec = NULL;
00847 st->speclist[specindex].grfid = 0;
00848 st->speclist[specindex].localidx = 0;
00849
00850
00851 if (specindex == st->num_specs - 1) {
00852 for (; st->speclist[st->num_specs - 1].grfid == 0 && st->num_specs > 1; st->num_specs--) {}
00853
00854 if (st->num_specs > 1) {
00855 st->speclist = ReallocT(st->speclist, st->num_specs);
00856 } else {
00857 free(st->speclist);
00858 st->num_specs = 0;
00859 st->speclist = NULL;
00860 st->cached_anim_triggers = 0;
00861 return;
00862 }
00863 }
00864
00865 StationUpdateAnimTriggers(st);
00866 }
00867
00877 bool DrawStationTile(int x, int y, RailType railtype, Axis axis, StationClassID sclass, uint station)
00878 {
00879 const StationSpec *statspec;
00880 const DrawTileSprites *sprites;
00881 const RailtypeInfo *rti = GetRailTypeInfo(railtype);
00882 PaletteID palette = COMPANY_SPRITE_COLOUR(_local_company);
00883 uint tile = 2;
00884
00885 statspec = GetCustomStationSpec(sclass, station);
00886 if (statspec == NULL) return false;
00887
00888 uint relocation = GetCustomStationRelocation(statspec, NULL, INVALID_TILE);
00889
00890 if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
00891 uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0x2110000, 0, statspec, NULL, INVALID_TILE);
00892 if (callback != CALLBACK_FAILED) tile = callback;
00893 }
00894
00895 if (statspec->renderdata == NULL) {
00896 sprites = GetStationTileLayout(STATION_RAIL, tile + axis);
00897 } else {
00898 sprites = &statspec->renderdata[(tile < statspec->tiles) ? tile + axis : (uint)axis];
00899 }
00900
00901 SpriteID image = sprites->ground.sprite;
00902 PaletteID pal = sprites->ground.pal;
00903 if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
00904 image += GetCustomStationGroundRelocation(statspec, NULL, INVALID_TILE);
00905 image += rti->custom_ground_offset;
00906 } else {
00907 image += rti->total_offset;
00908 }
00909
00910 DrawSprite(image, GroundSpritePaletteTransform(image, pal, palette), x, y);
00911
00912 DrawRailTileSeqInGUI(x, y, sprites, rti->total_offset, relocation, palette);
00913
00914 return true;
00915 }
00916
00917
00918 const StationSpec *GetStationSpec(TileIndex t)
00919 {
00920 if (!IsCustomStationSpecIndex(t)) return NULL;
00921
00922 const BaseStation *st = BaseStation::GetByTile(t);
00923 uint specindex = GetCustomStationSpecIndex(t);
00924 return specindex < st->num_specs ? st->speclist[specindex].spec : NULL;
00925 }
00926
00927
00928
00929
00930 bool IsStationTileBlocked(TileIndex tile)
00931 {
00932 const StationSpec *statspec = GetStationSpec(tile);
00933
00934 return statspec != NULL && HasBit(statspec->blocked, GetStationGfx(tile));
00935 }
00936
00937
00938
00939 bool IsStationTileElectrifiable(TileIndex tile)
00940 {
00941 const StationSpec *statspec = GetStationSpec(tile);
00942
00943 return
00944 statspec == NULL ||
00945 HasBit(statspec->pylons, GetStationGfx(tile)) ||
00946 !HasBit(statspec->wires, GetStationGfx(tile));
00947 }
00948
00949 void AnimateStationTile(TileIndex tile)
00950 {
00951 const StationSpec *ss = GetStationSpec(tile);
00952 if (ss == NULL) return;
00953
00954 const BaseStation *st = BaseStation::GetByTile(tile);
00955
00956 uint8 animation_speed = ss->anim_speed;
00957
00958 if (HasBit(ss->callback_mask, CBM_STATION_ANIMATION_SPEED)) {
00959 uint16 callback = GetStationCallback(CBID_STATION_ANIMATION_SPEED, 0, 0, ss, st, tile);
00960 if (callback != CALLBACK_FAILED) animation_speed = Clamp(callback & 0xFF, 0, 16);
00961 }
00962
00963 if (_tick_counter % (1 << animation_speed) != 0) return;
00964
00965 uint8 frame = GetStationAnimationFrame(tile);
00966 uint8 num_frames = ss->anim_frames;
00967
00968 bool frame_set_by_callback = false;
00969
00970 if (HasBit(ss->callback_mask, CBM_STATION_ANIMATION_NEXT_FRAME)) {
00971 uint32 param = HasBit(ss->flags, SSF_CB141_RANDOM_BITS) ? Random() : 0;
00972 uint16 callback = GetStationCallback(CBID_STATION_ANIM_NEXT_FRAME, param, 0, ss, st, tile);
00973
00974 if (callback != CALLBACK_FAILED) {
00975 frame_set_by_callback = true;
00976
00977 switch (callback & 0xFF) {
00978 case 0xFF:
00979 DeleteAnimatedTile(tile);
00980 break;
00981
00982 case 0xFE:
00983 frame_set_by_callback = false;
00984 break;
00985
00986 default:
00987 frame = callback & 0xFF;
00988 break;
00989 }
00990
00991
00992
00993 if (GB(callback, 8, 7) != 0) PlayTileSound(ss->grffile, GB(callback, 8, 7), tile);
00994 }
00995 }
00996
00997 if (!frame_set_by_callback) {
00998 if (frame < num_frames) {
00999 frame++;
01000 } else if (frame == num_frames && HasBit(ss->anim_status, 0)) {
01001
01002 frame = 0;
01003 } else {
01004
01005 DeleteAnimatedTile(tile);
01006 }
01007 }
01008
01009 SetStationAnimationFrame(tile, frame);
01010 MarkTileDirtyByTile(tile);
01011 }
01012
01013
01014 static void ChangeStationAnimationFrame(const StationSpec *ss, const BaseStation *st, TileIndex tile, uint16 random_bits, StatAnimTrigger trigger, CargoID cargo_type)
01015 {
01016 uint16 callback = GetStationCallback(CBID_STATION_ANIM_START_STOP, (random_bits << 16) | Random(), (uint8)trigger | (cargo_type << 8), ss, st, tile);
01017 if (callback == CALLBACK_FAILED) return;
01018
01019 switch (callback & 0xFF) {
01020 case 0xFD: break;
01021 case 0xFE: AddAnimatedTile(tile); break;
01022 case 0xFF: DeleteAnimatedTile(tile); break;
01023 default:
01024 SetStationAnimationFrame(tile, callback);
01025 AddAnimatedTile(tile);
01026 break;
01027 }
01028
01029
01030
01031 if (GB(callback, 8, 7) != 0) PlayTileSound(ss->grffile, GB(callback, 8, 7), tile);
01032 }
01033
01034 void StationAnimationTrigger(const BaseStation *st, TileIndex tile, StatAnimTrigger trigger, CargoID cargo_type)
01035 {
01036
01037 static const TriggerArea tas[] = {
01038 TA_TILE, TA_WHOLE, TA_WHOLE, TA_PLATFORM, TA_PLATFORM, TA_PLATFORM, TA_WHOLE
01039 };
01040
01041
01042 if (st == NULL) st = BaseStation::GetByTile(tile);
01043
01044
01045
01046 if (!HasBit(st->cached_anim_triggers, trigger)) return;
01047
01048 uint16 random_bits = Random();
01049 ETileArea area = ETileArea(st, tile, tas[trigger]);
01050
01051
01052 TILE_AREA_LOOP(tile, area) {
01053 if (st->TileBelongsToRailStation(tile)) {
01054 const StationSpec *ss = GetStationSpec(tile);
01055 if (ss != NULL && HasBit(ss->anim_triggers, trigger)) {
01056 CargoID cargo;
01057 if (cargo_type == CT_INVALID) {
01058 cargo = CT_INVALID;
01059 } else {
01060 cargo = GetReverseCargoTranslation(cargo_type, ss->grffile);
01061 }
01062 ChangeStationAnimationFrame(ss, st, tile, random_bits, trigger, cargo);
01063 }
01064 }
01065 }
01066 }
01067
01072 void StationUpdateAnimTriggers(BaseStation *st)
01073 {
01074 st->cached_anim_triggers = 0;
01075
01076
01077
01078 for (uint i = 0; i < st->num_specs; i++) {
01079 const StationSpec *ss = st->speclist[i].spec;
01080 if (ss != NULL) st->cached_anim_triggers |= ss->anim_triggers;
01081 }
01082 }