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00012 #include "stdafx.h"
00013 #include "gui.h"
00014 #include "articulated_vehicles.h"
00015 #include "command_func.h"
00016 #include "pathfinder/npf/npf_func.h"
00017 #include "pathfinder/yapf/yapf.hpp"
00018 #include "news_func.h"
00019 #include "company_func.h"
00020 #include "vehicle_gui.h"
00021 #include "newgrf_sound.h"
00022 #include "newgrf_text.h"
00023 #include "group.h"
00024 #include "strings_func.h"
00025 #include "viewport_func.h"
00026 #include "window_func.h"
00027 #include "vehicle_func.h"
00028 #include "sound_func.h"
00029 #include "ai/ai.hpp"
00030 #include "newgrf_station.h"
00031 #include "effectvehicle_func.h"
00032 #include "gamelog.h"
00033 #include "network/network.h"
00034 #include "spritecache.h"
00035 #include "core/random_func.hpp"
00036 #include "company_base.h"
00037 #include "newgrf.h"
00038 #include "order_backup.h"
00039 #include "programmable_signals.h"
00040 #include "infrastructure_func.h"
00041
00042 #include "table/strings.h"
00043 #include "table/train_cmd.h"
00044
00045 extern SpeedLimits _speedlimits;
00046
00047 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00048 static bool TrainCheckIfLineEnds(Train *v);
00049 static void TrainController(Train *v, Vehicle *nomove);
00050 static TileIndex TrainApproachingCrossingTile(const Train *v);
00051 static void CheckIfTrainNeedsService(Train *v);
00052 static void CheckNextTrainTile(Train *v);
00053
00054 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00055 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00056
00057
00065 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00066 {
00067 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00068
00069 DiagDirection diagdir = DirToDiagDir(direction);
00070
00071
00072 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00073 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00074 }
00075
00076 return diagdir;
00077 }
00078
00079
00085 byte FreightWagonMult(CargoID cargo)
00086 {
00087 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00088 return _settings_game.vehicle.freight_trains;
00089 }
00090
00096 static void RailVehicleLengthChanged(const Train *u)
00097 {
00098
00099 const Engine *engine = Engine::Get(u->engine_type);
00100 uint32 grfid = engine->grf_prop.grffile->grfid;
00101 GRFConfig *grfconfig = GetGRFConfig(grfid);
00102 if (GamelogGRFBugReverse(grfid, engine->grf_prop.local_id) || !HasBit(grfconfig->grf_bugs, GBUG_VEH_LENGTH)) {
00103 ShowNewGrfVehicleError(u->engine_type, STR_NEWGRF_BROKEN, STR_NEWGRF_BROKEN_VEHICLE_LENGTH, GBUG_VEH_LENGTH, true);
00104 }
00105 }
00106
00108 void CheckTrainsLengths()
00109 {
00110 const Train *v;
00111 bool first = true;
00112
00113 FOR_ALL_TRAINS(v) {
00114 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00115 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00116 if (u->track != TRACK_BIT_DEPOT) {
00117 if ((w->track != TRACK_BIT_DEPOT &&
00118 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->gcache.cached_veh_length) ||
00119 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00120 SetDParam(0, v->index);
00121 SetDParam(1, v->owner);
00122 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00123
00124 if (!_networking && first) {
00125 first = false;
00126 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00127 }
00128
00129 break;
00130 }
00131 }
00132 }
00133 }
00134 }
00135 }
00136
00141 void Train::RailtypeChanged()
00142 {
00143 for (Train *u = this; u != NULL; u = u->Next()) {
00144
00145 u->UpdateVisualEffect(false);
00146 }
00147 this->PowerChanged();
00148 if (this->IsFrontEngine()) this->UpdateAcceleration();
00149 }
00150
00157 void CheckBreakdownFlags(Train *v)
00158 {
00159 assert(v->IsFrontEngine());
00160
00161 CLRBITS(v->flags, (1 << VRF_BREAKDOWN_BRAKING) | VRF_IS_BROKEN);
00162
00163 for (const Train *w = v; w != NULL; w = w->Next()) {
00164 if (v->IsEngine() || w->IsMultiheaded()) {
00165 if (w->breakdown_ctr == 2) {
00166 SetBit(v->flags, VRF_BREAKDOWN_BRAKING);
00167 } else if (w->breakdown_ctr == 1) {
00168 switch (w->breakdown_type) {
00169 case BREAKDOWN_CRITICAL:
00170 case BREAKDOWN_EM_STOP: SetBit(v->flags, VRF_BREAKDOWN_STOPPED); break;
00171 case BREAKDOWN_LOW_SPEED: SetBit(v->flags, VRF_BREAKDOWN_SPEED); break;
00172 case BREAKDOWN_LOW_POWER: SetBit(v->flags, VRF_BREAKDOWN_POWER); break;
00173 }
00174 }
00175 }
00176 }
00177 }
00178
00185 void Train::ConsistChanged(bool same_length)
00186 {
00187 uint16 max_speed = UINT16_MAX;
00188
00189 assert(this->IsFrontEngine() || this->IsFreeWagon());
00190
00191 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00192 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00193 this->gcache.cached_total_length = 0;
00194 this->compatible_railtypes = RAILTYPES_NONE;
00195 this->tcache.cached_num_engines = 0;
00196
00197 bool train_can_tilt = true;
00198
00199 for (Train *u = this; u != NULL; u = u->Next()) {
00200 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00201
00202
00203 assert(u->First() == this);
00204
00205
00206 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00207 u->railtype = rvi_u->railtype;
00208
00209 if (u->IsEngine()) first_engine = u->engine_type;
00210
00211
00212 u->tcache.user_def_data = rvi_u->user_def_data;
00213 this->InvalidateNewGRFCache();
00214 u->InvalidateNewGRFCache();
00215 }
00216
00217 for (Train *u = this; u != NULL; u = u->Next()) {
00218
00219 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00220 this->InvalidateNewGRFCache();
00221 u->InvalidateNewGRFCache();
00222 }
00223
00224 for (Train *u = this; u != NULL; u = u->Next()) {
00225 const Engine *e_u = Engine::Get(u->engine_type);
00226 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00227
00228 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00229
00230
00231 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00232
00233
00234 u->colourmap = PAL_NONE;
00235
00236
00237 u->UpdateVisualEffect(true);
00238
00239 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00240 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00241
00242 SetBit(u->flags, VRF_POWEREDWAGON);
00243 } else {
00244 ClrBit(u->flags, VRF_POWEREDWAGON);
00245 }
00246
00247 if (!u->IsArticulatedPart()) {
00248
00249
00250 if (rvi_u->power > 0) {
00251 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00252 }
00253
00254
00255
00256 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00257 u->railtype = RAILTYPE_RAIL;
00258 u->compatible_railtypes |= RAILTYPES_RAIL;
00259 }
00260
00261
00262 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00263 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00264 if (HasBit(u->flags, VRF_NEED_REPAIR)) speed = u->vcache.cached_max_speed;
00265 if (speed != 0) max_speed = min(speed, max_speed);
00266 }
00267
00268 if(u->IsEngine() || u-> IsMultiheaded()) {
00269 this->tcache.cached_num_engines++;
00270 }
00271 }
00272
00273 u->cargo_cap = GetVehicleCapacity(u);
00274
00275
00276 uint16 veh_len = CALLBACK_FAILED;
00277 if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00278 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00279 }
00280 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00281 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00282
00283
00284 if (same_length && veh_len != u->gcache.cached_veh_length) RailVehicleLengthChanged(u);
00285
00286
00287 if (!same_length) u->gcache.cached_veh_length = veh_len;
00288
00289 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00290 this->InvalidateNewGRFCache();
00291 u->InvalidateNewGRFCache();
00292 }
00293
00294
00295 this->vcache.cached_max_speed = max_speed;
00296 this->tcache.cached_tilt = train_can_tilt;
00297 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00298
00299
00300 this->CargoChanged();
00301
00302 if (this->IsFrontEngine()) {
00303 this->UpdateAcceleration();
00304 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00305 InvalidateWindowData(WC_VEHICLE_REFIT, this->index);
00306 }
00307 }
00308
00319 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00320 {
00321 const Station *st = Station::Get(station_id);
00322 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00323 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00324
00325
00326
00327 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00328 if (v->gcache.cached_total_length >= *station_length) {
00329
00330 osl = OSL_PLATFORM_FAR_END;
00331 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00332 osl = v->current_order.GetStopLocation();
00333 }
00334
00335
00336 int stop;
00337 switch (osl) {
00338 default: NOT_REACHED();
00339
00340 case OSL_PLATFORM_NEAR_END:
00341 stop = v->gcache.cached_total_length;
00342 break;
00343
00344 case OSL_PLATFORM_MIDDLE:
00345 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00346 break;
00347
00348 case OSL_PLATFORM_FAR_END:
00349 stop = *station_length;
00350 break;
00351 }
00352
00353
00354
00355
00356
00357
00358 return stop - VEHICLE_LENGTH / 2;
00359 }
00360
00361
00366 int Train::GetCurveSpeedLimit() const
00367 {
00368 assert(this->First() == this);
00369
00370 static const int absolute_max_speed = UINT16_MAX;
00371 int max_speed = absolute_max_speed;
00372
00373 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00374
00375 int curvecount[2] = {0, 0};
00376
00377
00378 int numcurve = 0;
00379 int sum = 0;
00380 int pos = 0;
00381 int lastpos = -1;
00382 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00383 Direction this_dir = u->direction;
00384 Direction next_dir = u->Next()->direction;
00385
00386 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00387 if (dirdiff == DIRDIFF_SAME) continue;
00388
00389 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00390 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00391 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00392 if (lastpos != -1) {
00393 numcurve++;
00394 sum += pos - lastpos;
00395 if (pos - lastpos == 1) {
00396 max_speed = 88;
00397 }
00398 }
00399 lastpos = pos;
00400 }
00401
00402
00403 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00404 max_speed = 61;
00405 }
00406 }
00407
00408 if (numcurve > 0 && max_speed > 88) {
00409 if (curvecount[0] == 1 && curvecount[1] == 1) {
00410 max_speed = absolute_max_speed;
00411 } else {
00412 sum /= numcurve;
00413 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00414 }
00415 }
00416
00417 if (max_speed != absolute_max_speed) {
00418
00419 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00420 max_speed += (max_speed / 2) * rti->curve_speed;
00421
00422 if (this->tcache.cached_tilt) {
00423
00424 max_speed += max_speed / 5;
00425 }
00426 }
00427
00428 return max_speed;
00429 }
00430
00435 int Train::GetCurrentMaxSpeed() const
00436 {
00437 int max_speed = this->tcache.cached_max_curve_speed;
00438 assert(max_speed == this->GetCurveSpeedLimit());
00439
00440 if (IsRailStationTile(this->tile)) {
00441 StationID sid = GetStationIndex(this->tile);
00442 if (this->current_order.ShouldStopAtStation(this, sid)) {
00443 int station_ahead;
00444 int station_length;
00445 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00446
00447
00448
00449 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00450
00451 if (distance_to_go > 0) {
00452 int st_max_speed = 120;
00453
00454 int delta_v = this->cur_speed / (distance_to_go + 1);
00455 if (max_speed > (this->cur_speed - delta_v)) {
00456 st_max_speed = this->cur_speed - (delta_v / 10);
00457 }
00458
00459 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00460 max_speed = min(max_speed, st_max_speed);
00461 }
00462 }
00463 }
00464
00465 for (const Train *u = this; u != NULL; u = u->Next()) {
00466 if (u->track == TRACK_BIT_DEPOT) {
00467 max_speed = min(max_speed, 61);
00468 break;
00469 }
00470 }
00471
00472 if ( HasBit(this->flags, VRF_BREAKDOWN_SPEED) ) {
00473 max_speed = min(max_speed, this->GetBreakdownSpeed());
00474 }
00475
00476 return min(max_speed, this->gcache.cached_max_track_speed);
00477 }
00478
00479 void Train::UpdateAcceleration()
00480 {
00481 assert(this->IsFrontEngine());
00482
00483 uint power = this->gcache.cached_power;
00484 uint weight = this->gcache.cached_weight;
00485 assert(weight != 0);
00486 this->acceleration = Clamp(power / weight * 4, 1, 255);
00487
00488
00489 this->breakdown_chance = min(128 * 3 / (this->tcache.cached_num_engines + 2), 5);
00490 }
00491
00497 int Train::GetDisplayImageWidth(Point *offset) const
00498 {
00499 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00500 int vehicle_pitch = 0;
00501
00502 const Engine *e = Engine::Get(this->engine_type);
00503 if (e->grf_prop.grffile != NULL && is_custom_sprite(e->u.rail.image_index)) {
00504 reference_width = e->grf_prop.grffile->traininfo_vehicle_width;
00505 vehicle_pitch = e->grf_prop.grffile->traininfo_vehicle_pitch;
00506 }
00507
00508 if (offset != NULL) {
00509 offset->x = reference_width / 2;
00510 offset->y = vehicle_pitch;
00511 }
00512 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00513 }
00514
00515 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00516 {
00517 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00518 }
00519
00520 SpriteID Train::GetImage(Direction direction) const
00521 {
00522 uint8 spritenum = this->spritenum;
00523 SpriteID sprite;
00524
00525 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00526
00527 if (is_custom_sprite(spritenum)) {
00528 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)));
00529 if (sprite != 0) return sprite;
00530
00531 spritenum = Engine::Get(this->engine_type)->original_image_index;
00532 }
00533
00534 sprite = GetDefaultTrainSprite(spritenum, direction);
00535
00536 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00537
00538 return sprite;
00539 }
00540
00541 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y)
00542 {
00543 const Engine *e = Engine::Get(engine);
00544 Direction dir = rear_head ? DIR_E : DIR_W;
00545 uint8 spritenum = e->u.rail.image_index;
00546
00547 if (is_custom_sprite(spritenum)) {
00548 SpriteID sprite = GetCustomVehicleIcon(engine, dir);
00549 if (sprite != 0) {
00550 if (e->grf_prop.grffile != NULL) {
00551 y += e->grf_prop.grffile->traininfo_vehicle_pitch;
00552 }
00553 return sprite;
00554 }
00555
00556 spritenum = Engine::Get(engine)->original_image_index;
00557 }
00558
00559 if (rear_head) spritenum++;
00560
00561 return GetDefaultTrainSprite(spritenum, DIR_W);
00562 }
00563
00564 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal)
00565 {
00566 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00567 int yf = y;
00568 int yr = y;
00569
00570 SpriteID spritef = GetRailIcon(engine, false, yf);
00571 SpriteID spriter = GetRailIcon(engine, true, yr);
00572 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00573 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00574
00575 preferred_x = Clamp(preferred_x, left - real_spritef->x_offs + 14, right - real_spriter->width - real_spriter->x_offs - 15);
00576
00577 DrawSprite(spritef, pal, preferred_x - 14, yf);
00578 DrawSprite(spriter, pal, preferred_x + 15, yr);
00579 } else {
00580 SpriteID sprite = GetRailIcon(engine, false, y);
00581 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00582 preferred_x = Clamp(preferred_x, left - real_sprite->x_offs, right - real_sprite->width - real_sprite->x_offs);
00583 DrawSprite(sprite, pal, preferred_x, y);
00584 }
00585 }
00586
00595 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00596 {
00597 const RailVehicleInfo *rvi = &e->u.rail;
00598
00599
00600 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00601
00602 if (flags & DC_EXEC) {
00603 Train *v = new Train();
00604 *ret = v;
00605 v->spritenum = rvi->image_index;
00606
00607 v->engine_type = e->index;
00608 v->gcache.first_engine = INVALID_ENGINE;
00609
00610 DiagDirection dir = GetRailDepotDirection(tile);
00611
00612 v->direction = DiagDirToDir(dir);
00613 v->tile = tile;
00614
00615 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00616 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00617
00618 v->x_pos = x;
00619 v->y_pos = y;
00620 v->z_pos = GetSlopeZ(x, y);
00621 v->owner = _current_company;
00622 v->track = TRACK_BIT_DEPOT;
00623 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00624
00625 v->SetWagon();
00626
00627 v->SetFreeWagon();
00628 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00629
00630 v->cargo_type = e->GetDefaultCargoType();
00631 v->cargo_cap = rvi->capacity;
00632
00633 v->railtype = rvi->railtype;
00634
00635 v->build_year = _cur_year;
00636 v->cur_image = SPR_IMG_QUERY;
00637 v->random_bits = VehicleRandomBits();
00638
00639 v->group_id = DEFAULT_GROUP;
00640
00641 AddArticulatedParts(v);
00642
00643 _new_vehicle_id = v->index;
00644
00645 VehicleMove(v, false);
00646 v->First()->ConsistChanged(false);
00647 UpdateTrainGroupID(v->First());
00648
00649 CheckConsistencyOfArticulatedVehicle(v);
00650
00651
00652 Train *w;
00653 FOR_ALL_TRAINS(w) {
00654 if (w->tile == tile &&
00655 w->IsFreeWagon() &&
00656 w->engine_type == e->index &&
00657 w->First() != v &&
00658 !(w->vehstatus & VS_CRASHED)) {
00659 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00660 break;
00661 }
00662 }
00663 }
00664
00665 return CommandCost();
00666 }
00667
00669 static void NormalizeTrainVehInDepot(const Train *u)
00670 {
00671 const Train *v;
00672 FOR_ALL_TRAINS(v) {
00673 if (v->IsFreeWagon() && v->tile == u->tile &&
00674 v->track == TRACK_BIT_DEPOT) {
00675 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00676 CMD_MOVE_RAIL_VEHICLE).Failed())
00677 break;
00678 }
00679 }
00680 }
00681
00682 static void AddRearEngineToMultiheadedTrain(Train *v)
00683 {
00684 Train *u = new Train();
00685 v->value >>= 1;
00686 u->value = v->value;
00687 u->direction = v->direction;
00688 u->owner = v->owner;
00689 u->tile = v->tile;
00690 u->x_pos = v->x_pos;
00691 u->y_pos = v->y_pos;
00692 u->z_pos = v->z_pos;
00693 u->track = TRACK_BIT_DEPOT;
00694 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00695 u->spritenum = v->spritenum + 1;
00696 u->cargo_type = v->cargo_type;
00697 u->cargo_subtype = v->cargo_subtype;
00698 u->cargo_cap = v->cargo_cap;
00699 u->railtype = v->railtype;
00700 u->engine_type = v->engine_type;
00701 u->reliability = v->reliability;
00702 u->reliability_spd_dec = v->reliability_spd_dec;
00703 u->build_year = v->build_year;
00704 u->cur_image = SPR_IMG_QUERY;
00705 u->random_bits = VehicleRandomBits();
00706 v->SetMultiheaded();
00707 u->SetMultiheaded();
00708 v->SetNext(u);
00709 VehicleMove(u, false);
00710
00711
00712 v->other_multiheaded_part = u;
00713 u->other_multiheaded_part = v;
00714 }
00715
00725 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00726 {
00727 const RailVehicleInfo *rvi = &e->u.rail;
00728
00729 if (flags & DC_QUERY_COST) return CommandCost();
00730
00731
00732
00733 if (!IsRailDepotTile(tile)) return CMD_ERROR;
00734 if (!IsInfraUsageAllowed(VEH_TRAIN, _current_company, GetTileOwner(tile))) return CMD_ERROR;
00735
00736 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00737
00738
00739
00740 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00741
00742 if (flags & DC_EXEC) {
00743 DiagDirection dir = GetRailDepotDirection(tile);
00744 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00745 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00746
00747 Train *v = new Train();
00748 *ret = v;
00749 v->direction = DiagDirToDir(dir);
00750 v->tile = tile;
00751 v->owner = _current_company;
00752 v->x_pos = x;
00753 v->y_pos = y;
00754 v->z_pos = GetSlopeZ(x, y);
00755 v->track = TRACK_BIT_DEPOT;
00756 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00757 v->spritenum = rvi->image_index;
00758 v->cargo_type = e->GetDefaultCargoType();
00759 v->cargo_cap = rvi->capacity;
00760
00761 v->last_station_visited = INVALID_STATION;
00762 v->last_loading_station = INVALID_STATION;
00763
00764 v->engine_type = e->index;
00765 v->gcache.first_engine = INVALID_ENGINE;
00766
00767 v->reliability = e->reliability;
00768 v->reliability_spd_dec = e->reliability_spd_dec;
00769 v->max_age = e->GetLifeLengthInDays();
00770
00771 v->railtype = rvi->railtype;
00772 _new_vehicle_id = v->index;
00773
00774 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00775 v->date_of_last_service = _date;
00776 v->build_year = _cur_year;
00777 v->cur_image = SPR_IMG_QUERY;
00778 v->random_bits = VehicleRandomBits();
00779
00780 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00781
00782 v->group_id = DEFAULT_GROUP;
00783
00784 v->SetFrontEngine();
00785 v->SetEngine();
00786
00787 VehicleMove(v, false);
00788
00789 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00790 AddRearEngineToMultiheadedTrain(v);
00791 } else {
00792 AddArticulatedParts(v);
00793 }
00794
00795 v->ConsistChanged(false);
00796 UpdateTrainGroupID(v);
00797
00798 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00799 NormalizeTrainVehInDepot(v);
00800 }
00801
00802 CheckConsistencyOfArticulatedVehicle(v);
00803 }
00804
00805 return CommandCost();
00806 }
00807
00808
00809 bool Train::IsInDepot() const
00810 {
00811
00812 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00813
00814
00815 for (const Train *v = this; v != NULL; v = v->Next()) {
00816 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00817 }
00818
00819 return true;
00820 }
00821
00822 bool Train::IsStoppedInDepot() const
00823 {
00824
00825 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00826 return this->IsInDepot();
00827 }
00828
00829 static Train *FindGoodVehiclePos(const Train *src)
00830 {
00831 EngineID eng = src->engine_type;
00832 TileIndex tile = src->tile;
00833
00834 Train *dst;
00835 FOR_ALL_TRAINS(dst) {
00836 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00837
00838 Train *t = dst;
00839 while (t->engine_type == eng) {
00840 t = t->Next();
00841 if (t == NULL) return dst;
00842 }
00843 }
00844 }
00845
00846 return NULL;
00847 }
00848
00850 typedef SmallVector<Train *, 16> TrainList;
00851
00857 static void MakeTrainBackup(TrainList &list, Train *t)
00858 {
00859 for (; t != NULL; t = t->Next()) *list.Append() = t;
00860 }
00861
00866 static void RestoreTrainBackup(TrainList &list)
00867 {
00868
00869 if (list.Length() == 0) return;
00870
00871 Train *prev = NULL;
00872
00873 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00874 Train *t = *iter;
00875 if (prev != NULL) {
00876 prev->SetNext(t);
00877 } else if (t->Previous() != NULL) {
00878
00879 t->Previous()->SetNext(NULL);
00880 }
00881 prev = t;
00882 }
00883 }
00884
00890 static void RemoveFromConsist(Train *part, bool chain = false)
00891 {
00892 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00893
00894
00895
00896 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00897
00898
00899 tail->SetNext(NULL);
00900 }
00901
00907 static void InsertInConsist(Train *dst, Train *chain)
00908 {
00909
00910 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00911
00912 chain->Last()->SetNext(dst->Next());
00913 dst->SetNext(chain);
00914 }
00915
00921 static void NormaliseDualHeads(Train *t)
00922 {
00923 for (; t != NULL; t = t->GetNextVehicle()) {
00924 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00925
00926
00927 Train *u;
00928 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00929
00930 if (u == t->other_multiheaded_part) continue;
00931
00932
00933 RemoveFromConsist(t->other_multiheaded_part);
00934
00935 InsertInConsist(u, t->other_multiheaded_part);
00936 }
00937 }
00938
00943 static void NormaliseSubtypes(Train *chain)
00944 {
00945
00946 if (chain == NULL) return;
00947
00948
00949 assert(chain->Previous() == NULL);
00950
00951
00952 if (chain->IsWagon()) {
00953 chain->SetFreeWagon();
00954 } else {
00955 assert(chain->IsEngine());
00956 chain->SetFrontEngine();
00957 }
00958
00959
00960 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00961 t->ClearFreeWagon();
00962 t->ClearFrontEngine();
00963 }
00964 }
00965
00975 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00976 {
00977
00978
00979
00980 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00981 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00982 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00983 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00984 return CommandCost();
00985 }
00986
00987
00988
00989 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00990
00991 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00992 }
00993
00999 static CommandCost CheckTrainAttachment(Train *t)
01000 {
01001
01002 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
01003
01004
01005
01006 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
01007
01008 Train *head = t;
01009 Train *prev = t;
01010
01011
01012 t = t->Next();
01013 prev->SetNext(NULL);
01014
01015
01016 head->InvalidateNewGRFCache();
01017
01018 while (t != NULL) {
01019 allowed_len -= t->gcache.cached_veh_length;
01020
01021 Train *next = t->Next();
01022
01023
01024
01025 t->SetNext(NULL);
01026
01027
01028 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
01029
01030 EngineID first_engine = t->gcache.first_engine;
01031 t->gcache.first_engine = INVALID_ENGINE;
01032
01033
01034
01035 t->InvalidateNewGRFCache();
01036
01037 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
01038
01039
01040 t->gcache.first_engine = first_engine;
01041
01042
01043 t->InvalidateNewGRFCache();
01044 head->InvalidateNewGRFCache();
01045
01046 if (callback != CALLBACK_FAILED) {
01047
01048 StringID error = STR_NULL;
01049
01050 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01051 if (callback < 0xFD) error = GetGRFStringID(GetEngineGRFID(head->engine_type), 0xD000 + callback);
01052
01053 if (error != STR_NULL) return_cmd_error(error);
01054 }
01055 }
01056
01057
01058 prev->SetNext(t);
01059 prev = t;
01060 t = next;
01061 }
01062
01063 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01064 return CommandCost();
01065 }
01066
01077 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01078 {
01079
01080 CommandCost ret = CheckTrainAttachment(src);
01081 if (ret.Failed()) return ret;
01082 ret = CheckTrainAttachment(dst);
01083 if (ret.Failed()) return ret;
01084
01085
01086 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01087 }
01088
01097 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01098 {
01099
01100 if (*src_head == *dst_head) {
01101
01102
01103 *dst_head = NULL;
01104 } else if (*dst_head == NULL) {
01105
01106
01107 *dst_head = src;
01108 }
01109
01110 if (src == *src_head) {
01111
01112
01113
01114
01115
01116
01117 *src_head = move_chain ? NULL :
01118 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01119 }
01120
01121
01122
01123
01124 RemoveFromConsist(src, move_chain);
01125 if (*dst_head != src) InsertInConsist(dst, src);
01126
01127
01128
01129 NormaliseDualHeads(*src_head);
01130 NormaliseDualHeads(*dst_head);
01131 }
01132
01138 static void NormaliseTrainHead(Train *head)
01139 {
01140
01141 if (head == NULL) return;
01142
01143
01144 head->ConsistChanged(false);
01145 UpdateTrainGroupID(head);
01146
01147
01148 if (!head->IsFrontEngine()) return;
01149
01150
01151 InvalidateWindowData(WC_VEHICLE_REFIT, head->index);
01152 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, VVW_WIDGET_REFIT_VEH);
01153
01154
01155 if (head->unitnumber != 0) return;
01156 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01157 }
01158
01171 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01172 {
01173 VehicleID s = GB(p1, 0, 20);
01174 VehicleID d = GB(p2, 0, 20);
01175 bool move_chain = HasBit(p1, 20);
01176
01177 Train *src = Train::GetIfValid(s);
01178 if (src == NULL) return CMD_ERROR;
01179
01180 CommandCost ret = CheckOwnership(src->owner);
01181 if (ret.Failed()) return ret;
01182
01183
01184 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01185
01186
01187 Train *dst;
01188 if (d == INVALID_VEHICLE) {
01189 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01190 } else {
01191 dst = Train::GetIfValid(d);
01192 if (dst == NULL) return CMD_ERROR;
01193
01194 CommandCost ret = CheckOwnership(dst->owner);
01195 if (ret.Failed()) return ret;
01196
01197
01198 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01199 }
01200
01201
01202 src = src->GetFirstEnginePart();
01203 if (dst != NULL) {
01204 dst = dst->GetFirstEnginePart();
01205 }
01206
01207
01208 if (src == dst) return CommandCost();
01209
01210
01211 Train *src_head = src->First();
01212 Train *dst_head;
01213 if (dst != NULL) {
01214 dst_head = dst->First();
01215 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01216
01217 dst = dst->GetLastEnginePart();
01218 } else {
01219 dst_head = NULL;
01220 }
01221
01222 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01223
01224
01225 if (move_chain && src_head == dst_head) return CommandCost();
01226
01227
01228 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01229
01230
01231 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01232
01233
01234 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01235
01236
01237
01238 TrainList original_src;
01239 TrainList original_dst;
01240
01241 MakeTrainBackup(original_src, src_head);
01242 MakeTrainBackup(original_dst, dst_head);
01243
01244
01245
01246
01247 Train *original_src_head = src_head;
01248 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01249
01250
01251 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01252
01253 if ((flags & DC_AUTOREPLACE) == 0) {
01254
01255
01256
01257 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01258 if (ret.Failed()) {
01259
01260 RestoreTrainBackup(original_src);
01261 RestoreTrainBackup(original_dst);
01262 return ret;
01263 }
01264 }
01265
01266
01267 if (flags & DC_EXEC) {
01268
01269 NormaliseSubtypes(src_head);
01270 NormaliseSubtypes(dst_head);
01271
01272
01273
01274
01275
01276
01277
01278
01279
01280
01281
01282
01283
01284
01285
01286
01287
01288
01289
01290
01291
01292 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01293
01294 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01295 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01296 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01297 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01298 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01299
01300
01301
01302 if (dst_head != NULL && dst_head != src && (src_head == NULL || !src_head->IsFrontEngine())) {
01303 DecreaseGroupNumVehicle(src->group_id);
01304 }
01305
01306
01307
01308 if (dst_head == NULL && !src_head->IsFrontEngine()) {
01309 DecreaseGroupNumVehicle(src->group_id);
01310 }
01311
01312
01313
01314 DeleteVehicleOrders(src);
01315 RemoveVehicleFromGroup(src);
01316 src->unitnumber = 0;
01317 }
01318
01319
01320
01321 if (original_src_head == src && dst_head == src) {
01322 IncreaseGroupNumVehicle(src->group_id);
01323 }
01324
01325
01326
01327 if (original_src_head != src && dst_head == src) {
01328 SetTrainGroupID(src, DEFAULT_GROUP);
01329 }
01330
01331
01332 NormaliseTrainHead(src_head);
01333 NormaliseTrainHead(dst_head);
01334
01335
01336 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01337 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01338 } else {
01339
01340 RestoreTrainBackup(original_src);
01341 RestoreTrainBackup(original_dst);
01342 }
01343
01344 return CommandCost();
01345 }
01346
01358 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01359 {
01360
01361 Window *w = NULL;
01362
01363
01364 bool sell_chain = HasBit(data, 0);
01365
01366 Train *v = Train::From(t)->GetFirstEnginePart();
01367 Train *first = v->First();
01368
01369 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01370
01371
01372
01373 TrainList original;
01374 MakeTrainBackup(original, first);
01375
01376
01377 Train *new_head = first;
01378 Train *sell_head = NULL;
01379
01380
01381 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01382
01383
01384 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01385 if (ret.Failed()) {
01386
01387 RestoreTrainBackup(original);
01388 return ret;
01389 }
01390
01391 CommandCost cost(EXPENSES_NEW_VEHICLES);
01392 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01393
01394 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01395 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01396 }
01397
01398
01399 if (flags & DC_EXEC) {
01400
01401 NormaliseSubtypes(new_head);
01402
01403 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01404
01405
01406 new_head->orders.list = first->orders.list;
01407 new_head->AddToShared(first);
01408 DeleteVehicleOrders(first);
01409
01410
01411 new_head->CopyVehicleConfigAndStatistics(first);
01412 IncreaseGroupNumVehicle(new_head->group_id);
01413
01414
01415 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01416 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01417 OrderBackup::Backup(v, user);
01418 }
01419
01420
01421 NormaliseTrainHead(new_head);
01422
01423
01424 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01425 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01426
01427
01428 delete sell_head;
01429 } else {
01430
01431 RestoreTrainBackup(original);
01432 }
01433
01434 return cost;
01435 }
01436
01437 void Train::UpdateDeltaXY(Direction direction)
01438 {
01439 #define MKIT(a, b, c, d) ((a & 0xFF) << 24) | ((b & 0xFF) << 16) | ((c & 0xFF) << 8) | ((d & 0xFF) << 0)
01440 static const uint32 _delta_xy_table[8] = {
01441 MKIT(3, 3, -1, -1),
01442 MKIT(3, 7, -1, -3),
01443 MKIT(3, 3, -1, -1),
01444 MKIT(7, 3, -3, -1),
01445 MKIT(3, 3, -1, -1),
01446 MKIT(3, 7, -1, -3),
01447 MKIT(3, 3, -1, -1),
01448 MKIT(7, 3, -3, -1),
01449 };
01450 #undef MKIT
01451
01452 uint32 x = _delta_xy_table[direction];
01453 this->x_offs = GB(x, 0, 8);
01454 this->y_offs = GB(x, 8, 8);
01455 this->x_extent = GB(x, 16, 8);
01456 this->y_extent = GB(x, 24, 8);
01457 this->z_extent = 6;
01458 }
01459
01461 static void MarkTrainAsStuck(Train *v)
01462 {
01463 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01464
01465 SetBit(v->flags, VRF_TRAIN_STUCK);
01466
01467 v->wait_counter = 0;
01468
01469
01470 v->cur_speed = 0;
01471 v->subspeed = 0;
01472 v->SetLastSpeed();
01473
01474 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01475 }
01476 }
01477
01478 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01479 {
01480 uint16 flag1 = *swap_flag1;
01481 uint16 flag2 = *swap_flag2;
01482
01483
01484 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01485 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01486 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01487 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01488
01489
01490 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01491 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01492 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01493 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01494 }
01495 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01496 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01497 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01498 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01499 }
01500 }
01501
01506 static void UpdateStatusAfterSwap(Train *v)
01507 {
01508
01509 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01510
01511
01512 if (v->track != TRACK_BIT_WORMHOLE) {
01513 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01514 } else {
01515
01516
01517
01518
01519 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01520 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01521 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01522 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01523
01524
01525
01526 v->UpdateInclination(true, true);
01527 return;
01528 }
01529 }
01530 }
01531
01532 v->UpdateViewport(true, true);
01533 }
01534
01535 static void ReverseTrainSwapVeh(Train *v, int l, int r)
01536 {
01537 Train *a, *b;
01538
01539
01540 for (a = v; l != 0; l--) a = a->Next();
01541 for (b = v; r != 0; r--) b = b->Next();
01542
01543 if (a != b) {
01544
01545 {
01546 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01547 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01548 a->vehstatus = tmp;
01549 }
01550
01551 Swap(a->track, b->track);
01552 Swap(a->direction, b->direction);
01553 Swap(a->x_pos, b->x_pos);
01554 Swap(a->y_pos, b->y_pos);
01555 Swap(a->tile, b->tile);
01556 Swap(a->z_pos, b->z_pos);
01557
01558 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01559
01560 UpdateStatusAfterSwap(a);
01561 UpdateStatusAfterSwap(b);
01562 } else {
01563
01564
01565
01566 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01567 UpdateStatusAfterSwap(a);
01568 }
01569
01570
01571 v->RailtypeChanged();
01572 }
01573
01574
01580 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01581 {
01582 return (v->type == VEH_TRAIN) ? v : NULL;
01583 }
01584
01585
01592 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01593 {
01594 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01595
01596 Train *t = Train::From(v);
01597 if (!t->IsFrontEngine()) return NULL;
01598
01599 TileIndex tile = *(TileIndex *)data;
01600
01601 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01602
01603 return t;
01604 }
01605
01606
01613 static bool TrainApproachingCrossing(TileIndex tile)
01614 {
01615 assert(IsLevelCrossingTile(tile));
01616
01617 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01618 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01619
01620 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01621
01622 dir = ReverseDiagDir(dir);
01623 tile_from = tile + TileOffsByDiagDir(dir);
01624
01625 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01626 }
01627
01631 static inline bool CheckLevelCrossing(TileIndex tile)
01632 {
01633 return HasCrossingReservation(tile) || HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile);
01634 }
01635
01643 static void UpdateLevelCrossingTile(TileIndex tile, bool sound, bool force_state = false)
01644 {
01645 assert(IsLevelCrossingTile(tile));
01646 bool new_state;
01647
01648 if (force_state) {
01649 new_state = force_state;
01650 } else {
01651 new_state = CheckLevelCrossing(tile);
01652 }
01653
01654 if (new_state != IsCrossingBarred(tile)) {
01655 if (new_state && sound) {
01656 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01657 }
01658 SetCrossingBarred(tile, new_state);
01659 MarkTileDirtyByTile(tile);
01660 }
01661 }
01662
01668 void UpdateLevelCrossing(TileIndex tile, bool sound)
01669 {
01670 bool is_forced = false;
01671 for (TileIndex t = tile; !is_forced && IsTileType(t, MP_ROAD) && IsLevelCrossingTile(t); t = TileAddByDiagDir(t, AxisToDiagDir(GetCrossingRoadAxis(t)))) {
01672 is_forced |= CheckLevelCrossing(t);
01673 }
01674 for (TileIndex t = tile; !is_forced && IsTileType(t, MP_ROAD) && IsLevelCrossingTile(t); t = TileAddByDiagDir(t, ReverseDiagDir(AxisToDiagDir(GetCrossingRoadAxis(t))))) {
01675 is_forced |= CheckLevelCrossing(t);
01676 }
01677
01678 for (TileIndex t = tile; IsTileType(t, MP_ROAD) && IsLevelCrossingTile(t); t = TileAddByDiagDir(t, AxisToDiagDir(GetCrossingRoadAxis(t)))) {
01679 UpdateLevelCrossingTile(t, sound, is_forced);
01680 }
01681 for (TileIndex t = tile; IsTileType(t, MP_ROAD) && IsLevelCrossingTile(t); t = TileAddByDiagDir(t, ReverseDiagDir(AxisToDiagDir(GetCrossingRoadAxis(t))))) {
01682 UpdateLevelCrossingTile(t, sound, is_forced);
01683 }
01684 }
01685
01691 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01692 {
01693 if (!IsCrossingBarred(tile)) {
01694 SetCrossingReservation(tile, true);
01695 UpdateLevelCrossing(tile, true);
01696 }
01697 }
01698
01699
01705 static void AdvanceWagonsBeforeSwap(Train *v)
01706 {
01707 Train *base = v;
01708 Train *first = base;
01709 Train *last = v->Last();
01710 uint length = CountVehiclesInChain(v);
01711
01712 while (length > 2) {
01713 last = last->Previous();
01714 first = first->Next();
01715
01716 int differential = base->gcache.cached_veh_length - last->gcache.cached_veh_length;
01717
01718
01719
01720 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01721
01722 base = first;
01723 length -= 2;
01724 }
01725 }
01726
01727
01733 static void AdvanceWagonsAfterSwap(Train *v)
01734 {
01735
01736 Train *dep = v;
01737 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01738 dep = dep->Next();
01739 }
01740
01741 Train *leave = dep->Next();
01742
01743 if (leave != NULL) {
01744
01745 int d = TicksToLeaveDepot(dep);
01746
01747 if (d <= 0) {
01748 leave->vehstatus &= ~VS_HIDDEN;
01749 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01750 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01751 }
01752 } else {
01753 dep = NULL;
01754 }
01755
01756 Train *base = v;
01757 Train *first = base;
01758 Train *last = v->Last();
01759 uint length = CountVehiclesInChain(v);
01760
01761
01762
01763 bool nomove = (dep == NULL);
01764
01765 while (length > 2) {
01766
01767
01768 if (base == dep) break;
01769
01770
01771 if (last == dep) nomove = true;
01772
01773 last = last->Previous();
01774 first = first->Next();
01775
01776 int differential = last->gcache.cached_veh_length - base->gcache.cached_veh_length;
01777
01778
01779 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01780
01781 base = first;
01782 length -= 2;
01783 }
01784 }
01785
01786
01787 static void ReverseTrainDirection(Train *v)
01788 {
01789 if (IsRailDepotTile(v->tile)) {
01790 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01791 }
01792
01793
01794 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01795
01796
01797 TileIndex crossing = TrainApproachingCrossingTile(v);
01798
01799
01800 int r = CountVehiclesInChain(v) - 1;
01801
01802 AdvanceWagonsBeforeSwap(v);
01803
01804
01805 int l = 0;
01806 do {
01807 ReverseTrainSwapVeh(v, l++, r--);
01808 } while (l <= r);
01809
01810 AdvanceWagonsAfterSwap(v);
01811
01812 if (IsRailDepotTile(v->tile)) {
01813 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01814 }
01815
01816 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01817
01818 ClrBit(v->flags, VRF_REVERSING);
01819
01820
01821 v->ConsistChanged(true);
01822
01823
01824 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01825
01826
01827 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01828
01829
01830 crossing = TrainApproachingCrossingTile(v);
01831 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01832
01833
01834 if (v->track == TRACK_BIT_DEPOT) {
01835
01836 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01837 ClrBit(v->flags, VRF_TRAIN_STUCK);
01838 return;
01839 }
01840
01841
01842 if (HasWormholeSignals(v->tile)) {
01843
01844 SetBitTunnelBridgeExit(v->tile);
01845 MarkTileDirtyByTile(v->tile);
01846
01847 v->wait_counter = 0;
01848 v->load_unload_ticks = 0;
01849 return;
01850 }
01851
01852
01853
01854 DiagDirection dir = TrainExitDir(v->direction, v->track);
01855 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01856
01857 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01858
01859
01860 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01861 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01862 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01863
01864 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01865 if (TryPathReserve(v, false, first_tile_okay)) {
01866
01867 CheckNextTrainTile(v);
01868 } else if (v->current_order.GetType() != OT_LOADING) {
01869
01870 MarkTrainAsStuck(v);
01871 }
01872 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01873
01874 ClrBit(v->flags, VRF_TRAIN_STUCK);
01875 v->wait_counter = 0;
01876 }
01877 }
01878
01888 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01889 {
01890 Train *v = Train::GetIfValid(p1);
01891 if (v == NULL) return CMD_ERROR;
01892
01893 CommandCost ret = CheckOwnership(v->owner);
01894 if (ret.Failed()) return ret;
01895
01896 if (p2 != 0) {
01897
01898
01899 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01900 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01901 }
01902 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01903
01904 Train *front = v->First();
01905
01906 if (!front->IsStoppedInDepot()) {
01907 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01908 }
01909
01910 if (flags & DC_EXEC) {
01911 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01912
01913 front->ConsistChanged(false);
01914 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01915 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01916 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01917 SetWindowClassesDirty(WC_TRAINS_LIST);
01918 }
01919 } else {
01920
01921 if ((v->vehstatus & VS_CRASHED) || HasBit(v->flags, VRF_BREAKDOWN_STOPPED)) return CMD_ERROR;
01922
01923 if (flags & DC_EXEC) {
01924
01925 if (v->current_order.IsType(OT_LOADING)) {
01926 const Vehicle *last = v;
01927 while (last->Next() != NULL) last = last->Next();
01928
01929
01930 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01931 v->LeaveStation();
01932 }
01933 }
01934
01935
01936 v->force_proceed = TFP_NONE;
01937 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01938
01939 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01940 ToggleBit(v->flags, VRF_REVERSING);
01941 } else {
01942 v->cur_speed = 0;
01943 v->SetLastSpeed();
01944 HideFillingPercent(&v->fill_percent_te_id);
01945 ReverseTrainDirection(v);
01946 }
01947 }
01948 }
01949 return CommandCost();
01950 }
01951
01961 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01962 {
01963 Train *t = Train::GetIfValid(p1);
01964 if (t == NULL) return CMD_ERROR;
01965
01966 CommandCost ret = CheckVehicleControlAllowed(t);
01967 if (ret.Failed()) return ret;
01968
01969
01970 if (flags & DC_EXEC) {
01971
01972
01973
01974
01975
01976 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? TFP_STUCK : TFP_SIGNAL;
01977 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01978 }
01979
01980 return CommandCost();
01981 }
01982
01987 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01988 {
01989 assert(!(v->vehstatus & VS_CRASHED));
01990
01991 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01992
01993 PBSTileInfo origin = FollowTrainReservation(v);
01994 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01995
01996 switch (_settings_game.pf.pathfinder_for_trains) {
01997 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01998 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01999
02000 default: NOT_REACHED();
02001 }
02002 }
02003
02004 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02005 {
02006 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02007 if (tfdd.best_length == UINT_MAX) return false;
02008
02009 if (location != NULL) *location = tfdd.tile;
02010 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02011 if (reverse != NULL) *reverse = tfdd.reverse;
02012
02013 return true;
02014 }
02015
02016 void Train::PlayLeaveStationSound() const
02017 {
02018 static const SoundFx sfx[] = {
02019 SND_04_TRAIN,
02020 SND_0A_TRAIN_HORN,
02021 SND_0A_TRAIN_HORN,
02022 SND_47_MAGLEV_2,
02023 SND_41_MAGLEV
02024 };
02025
02026 if (PlayVehicleSound(this, VSE_START)) return;
02027
02028 EngineID engtype = this->engine_type;
02029 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02030 }
02031
02033 static void CheckNextTrainTile(Train *v)
02034 {
02035
02036 if (_settings_game.pf.path_backoff_interval == 255) return;
02037
02038
02039 if (v->track == TRACK_BIT_DEPOT) return;
02040
02041 switch (v->current_order.GetType()) {
02042
02043 case OT_GOTO_DEPOT:
02044 if (v->tile == v->dest_tile) return;
02045 break;
02046
02047 case OT_GOTO_WAYPOINT:
02048
02049 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02050 break;
02051
02052 case OT_NOTHING:
02053 case OT_LEAVESTATION:
02054 case OT_LOADING:
02055
02056 if (v->GetNumOrders() > 0) return;
02057 break;
02058
02059 default:
02060 break;
02061 }
02062
02063 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02064
02065 Trackdir td = v->GetVehicleTrackdir();
02066
02067 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02068 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td)))) {
02069
02070 if (IsSpeedSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02071 HasSignalOnTrackdir(v->tile, td)) {
02072 v->signal_speedlimit = GetSignalSpeed(SignalReference(v->tile, TrackdirToTrack(td)));
02073 }
02074
02075
02076 if (GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) {
02077 return;
02078 }
02079 }
02080
02081 CFollowTrackRail ft(v);
02082 if (!ft.Follow(v->tile, td)) return;
02083
02084 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02085
02086 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02087 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02088
02089 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02090 if (_settings_game.pf.forbid_90_deg) {
02091 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02092 }
02093 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02094 }
02095 }
02096 }
02097 }
02098
02099 static bool CheckTrainStayInDepot(Train *v)
02100 {
02101
02102 for (const Train *u = v; u != NULL; u = u->Next()) {
02103 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02104 }
02105
02106
02107 if (v->gcache.cached_power == 0) {
02108 v->vehstatus |= VS_STOPPED;
02109 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02110 return true;
02111 }
02112
02113 SigSegState seg_state;
02114
02115 if (v->force_proceed == TFP_NONE) {
02116
02117 if (++v->wait_counter < 37) {
02118 SetWindowClassesDirty(WC_TRAINS_LIST);
02119 return true;
02120 }
02121
02122 v->wait_counter = 0;
02123
02124 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02125 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02126
02127 SetWindowClassesDirty(WC_TRAINS_LIST);
02128 return true;
02129 }
02130 } else {
02131 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02132 }
02133
02134
02135 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02136
02137 if (HasDepotReservation(v->tile)) return true;
02138 SetDepotReservation(v->tile, true);
02139 VehicleEnterDepot(v);
02140 return true;
02141 }
02142
02143
02144 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02145
02146 SetWindowClassesDirty(WC_TRAINS_LIST);
02147 MarkTrainAsStuck(v);
02148 return true;
02149 }
02150
02151 SetDepotReservation(v->tile, true);
02152 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02153
02154 VehicleServiceInDepot(v);
02155 SetWindowClassesDirty(WC_TRAINS_LIST);
02156 v->PlayLeaveStationSound();
02157
02158 v->track = TRACK_BIT_X;
02159 if (v->direction & 2) v->track = TRACK_BIT_Y;
02160
02161 v->vehstatus &= ~VS_HIDDEN;
02162 v->cur_speed = 0;
02163
02164 v->UpdateDeltaXY(v->direction);
02165 v->cur_image = v->GetImage(v->direction);
02166 VehicleMove(v, false);
02167 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02168 v->UpdateAcceleration();
02169 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02170
02171 return false;
02172 }
02173
02174
02175
02176
02177
02178
02179
02180
02181
02182
02183 static const uint8 bridge_signal_block_size = TILE_SIZE * 4;
02184
02185 static void HandleLastTunnelBridgeSignals(TileIndex tile, TileIndex end, DiagDirection dir, bool free)
02186 {
02187 if (IsBridge(end) && _m[end].m2 > 0){
02188
02189 uint16 m = _m[end].m2;
02190 byte i = 15;
02191 while((m & 0x8000) == 0 && --i > 0) m <<= 1;
02192 ClrBit(_m[end].m2, i);
02193
02194 uint x = TileX(end)* TILE_SIZE;
02195 uint y = TileY(end)* TILE_SIZE;
02196 uint distance = bridge_signal_block_size * ++i;
02197 switch (dir) {
02198 default: NOT_REACHED();
02199 case DIAGDIR_NE: MarkTileDirtyByTile(TileVirtXY(x - distance, y)); break;
02200 case DIAGDIR_SE: MarkTileDirtyByTile(TileVirtXY(x, y + distance)); break;
02201 case DIAGDIR_SW: MarkTileDirtyByTile(TileVirtXY(x + distance, y)); break;
02202 case DIAGDIR_NW: MarkTileDirtyByTile(TileVirtXY(x, y - distance)); break;
02203 }
02204 MarkTileDirtyByTile(tile);
02205 }
02206 if (free) {
02207
02208 _m[tile].m2 = 0;
02209 _m[end].m2 = 0;
02210
02211 if (IsTunnelBridgeWithSignRed(end)) {
02212 ClrBitTunnelBridgeExit(end);
02213 if (!_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(end);
02214 } else if (IsTunnelBridgeWithSignRed(tile)) {
02215 ClrBitTunnelBridgeExit(tile);
02216 if (!_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(tile);
02217 }
02218 }
02219 }
02220
02222 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02223 {
02224 DiagDirection dir = TrackdirToExitdir(track_dir);
02225
02226 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02227
02228 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02229 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02230
02231 bool free = TunnelBridgeIsFree(tile, end, v).Succeeded();
02232 if (free) {
02233
02234 SetTunnelBridgeReservation(tile, false);
02235 SetTunnelBridgeReservation(end, false);
02236
02237 if (_settings_client.gui.show_track_reservation) {
02238 MarkTileDirtyByTile(tile);
02239 MarkTileDirtyByTile(end);
02240 }
02241 }
02242 if (HasWormholeSignals(tile)) HandleLastTunnelBridgeSignals(tile, end, dir, free);
02243 }
02244 } else if (IsRailStationTile(tile)) {
02245 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02246
02247
02248 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02249 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02250 }
02251 } else {
02252
02253 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02254 }
02255 }
02256
02258 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02259 {
02260 assert(v->IsFrontEngine());
02261
02262 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02263 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02264 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02265 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02266
02267
02268 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02269
02270 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02271 while (ft.Follow(tile, td)) {
02272 tile = ft.m_new_tile;
02273 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02274 td = RemoveFirstTrackdir(&bits);
02275 assert(bits == TRACKDIR_BIT_NONE);
02276
02277 if (!IsValidTrackdir(td)) break;
02278
02279 if (IsTileType(tile, MP_RAILWAY)) {
02280 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td))) && !IsSpeedSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02281
02282 UnreserveRailTrack(tile, TrackdirToTrack(td));
02283 break;
02284 }
02285 if (HasPbsSignalOnTrackdir(tile, td)) {
02286 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02287
02288 break;
02289 } else {
02290
02291 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02292 MarkTileDirtyByTile(tile);
02293 }
02294 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) &&
02295 IsOnewaySignal(tile, TrackdirToTrack(td)) &&
02296 !IsSpeedSignal(tile, TrackdirToTrack(td))) {
02297 break;
02298 }
02299 }
02300
02301
02302 if (free_tile || (!(ft.m_is_station && GetStationIndex(ft.m_new_tile) == station_id) && !ft.m_is_tunnel && !ft.m_is_bridge)) ClearPathReservation(v, tile, td);
02303
02304 free_tile = true;
02305 }
02306 }
02307
02308 static const byte _initial_tile_subcoord[6][4][3] = {
02309 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02310 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02311 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02312 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02313 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02314 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02315 };
02316
02329 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02330 {
02331 switch (_settings_game.pf.pathfinder_for_trains) {
02332 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02333 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02334
02335 default: NOT_REACHED();
02336 }
02337 }
02338
02344 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02345 {
02346 PBSTileInfo origin = FollowTrainReservation(v);
02347
02348 CFollowTrackRail ft(v);
02349
02350 TileIndex tile = origin.tile;
02351 Trackdir cur_td = origin.trackdir;
02352 while (ft.Follow(tile, cur_td)) {
02353 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02354
02355 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02356 }
02357
02358 if (_settings_game.pf.forbid_90_deg) {
02359 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02360 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02361 }
02362
02363
02364 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02365 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02366
02367
02368
02369
02370
02371
02372 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02373
02374
02375
02376 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02377
02378
02379 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02380 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02381 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02382 }
02383
02384 tile = ft.m_new_tile;
02385 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02386
02387 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02388 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02389 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02390
02391 return PBSTileInfo(tile, cur_td, true);
02392 }
02393
02394 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02395 }
02396
02397 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02398
02399 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02400 }
02401
02402
02403 tile = origin.tile;
02404 cur_td = origin.trackdir;
02405 TileIndex stopped = ft.m_old_tile;
02406 Trackdir stopped_td = ft.m_old_td;
02407 while (tile != stopped || cur_td != stopped_td) {
02408 if (!ft.Follow(tile, cur_td)) break;
02409
02410 if (_settings_game.pf.forbid_90_deg) {
02411 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02412 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02413 }
02414 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02415
02416 tile = ft.m_new_tile;
02417 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02418
02419 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02420 }
02421
02422
02423 return PBSTileInfo();
02424 }
02425
02436 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02437 {
02438 switch (_settings_game.pf.pathfinder_for_trains) {
02439 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02440 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02441
02442 default: NOT_REACHED();
02443 }
02444 }
02445
02447 class VehicleOrderSaver
02448 {
02449 private:
02450 Train *v;
02451 Order old_order;
02452 TileIndex old_dest_tile;
02453 StationID old_last_station_visited;
02454 VehicleOrderID index;
02455 bool suppress_implicit_orders;
02456
02457 public:
02458 VehicleOrderSaver(Train *_v) :
02459 v(_v),
02460 old_order(_v->current_order),
02461 old_dest_tile(_v->dest_tile),
02462 old_last_station_visited(_v->last_station_visited),
02463 index(_v->cur_real_order_index),
02464 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02465 {
02466 }
02467
02468 ~VehicleOrderSaver()
02469 {
02470 this->v->current_order = this->old_order;
02471 this->v->dest_tile = this->old_dest_tile;
02472 this->v->last_station_visited = this->old_last_station_visited;
02473 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02474 }
02475
02481 bool SwitchToNextOrder(bool skip_first)
02482 {
02483 if (this->v->GetNumOrders() == 0) return false;
02484
02485 if (skip_first) ++this->index;
02486
02487 int conditional_depth = 0;
02488
02489 do {
02490
02491 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02492
02493 Order *order = this->v->GetOrder(this->index);
02494 assert(order != NULL);
02495
02496 switch (order->GetType()) {
02497 case OT_GOTO_DEPOT:
02498
02499 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02500 case OT_GOTO_STATION:
02501 case OT_GOTO_WAYPOINT:
02502 this->v->current_order = *order;
02503 UpdateOrderDest(this->v, order);
02504 return true;
02505 case OT_CONDITIONAL: {
02506 if (conditional_depth > this->v->GetNumOrders()) return false;
02507 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02508 if (next != INVALID_VEH_ORDER_ID) {
02509 conditional_depth++;
02510 this->index = next;
02511
02512 continue;
02513 }
02514 break;
02515 }
02516 default:
02517 break;
02518 }
02519
02520
02521 ++this->index;
02522 } while (this->index != this->v->cur_real_order_index);
02523
02524 return false;
02525 }
02526 };
02527
02528
02529 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02530 {
02531 Track best_track = INVALID_TRACK;
02532 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02533 bool changed_signal = false;
02534
02535 assert((tracks & ~TRACK_BIT_MASK) == 0);
02536
02537 if (got_reservation != NULL) *got_reservation = false;
02538
02539
02540 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02541
02542 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02543
02544
02545 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02546 Track track = FindFirstTrack(tracks);
02547
02548 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02549 do_track_reservation = true;
02550 changed_signal = true;
02551 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02552 } else if (!do_track_reservation) {
02553 return track;
02554 }
02555 best_track = track;
02556 }
02557
02558 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02559 DiagDirection dest_enterdir = enterdir;
02560 if (do_track_reservation) {
02561
02562
02563
02564 CheckIfTrainNeedsService(v);
02565 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02566
02567 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02568 if (res_dest.tile == INVALID_TILE) {
02569
02570 if (mark_stuck) MarkTrainAsStuck(v);
02571 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02572 return FindFirstTrack(tracks);
02573 }
02574 }
02575
02576
02577 VehicleOrderSaver orders(v);
02578
02579
02580
02581
02582
02583
02584
02585 if (v->current_order.IsType(OT_LEAVESTATION)) {
02586 orders.SwitchToNextOrder(false);
02587 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02588 v->current_order.IsType(OT_GOTO_STATION) ?
02589 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02590 v->tile == v->dest_tile))) {
02591 orders.SwitchToNextOrder(true);
02592 }
02593
02594 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02595
02596 bool path_found = true;
02597 TileIndex new_tile = res_dest.tile;
02598
02599 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02600 if (new_tile == tile) best_track = next_track;
02601 v->HandlePathfindingResult(path_found);
02602 }
02603
02604
02605 if (!do_track_reservation) return best_track;
02606
02607
02608 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02609 if (mark_stuck) MarkTrainAsStuck(v);
02610 FreeTrainTrackReservation(v);
02611 return best_track;
02612 }
02613
02614
02615 if (res_dest.tile == INVALID_TILE) {
02616
02617 PBSTileInfo origin = FollowTrainReservation(v);
02618 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02619 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02620 best_track = FindFirstTrack(res);
02621 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02622 if (got_reservation != NULL) *got_reservation = true;
02623 if (changed_signal) MarkTileDirtyByTile(tile);
02624 } else {
02625 FreeTrainTrackReservation(v);
02626 if (mark_stuck) MarkTrainAsStuck(v);
02627 }
02628 return best_track;
02629 }
02630
02631 if (got_reservation != NULL) *got_reservation = true;
02632
02633
02634 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02635
02636 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02637 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02638 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02639 if (_settings_game.pf.forbid_90_deg) {
02640 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02641 }
02642
02643
02644 if (orders.SwitchToNextOrder(true)) {
02645 PBSTileInfo cur_dest;
02646 bool path_found;
02647 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02648 if (cur_dest.tile != INVALID_TILE) {
02649 res_dest = cur_dest;
02650 if (res_dest.okay) continue;
02651
02652 FreeTrainTrackReservation(v);
02653 if (mark_stuck) MarkTrainAsStuck(v);
02654 if (got_reservation != NULL) *got_reservation = false;
02655 changed_signal = false;
02656 break;
02657 }
02658 }
02659
02660 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02661 FreeTrainTrackReservation(v);
02662 if (mark_stuck) MarkTrainAsStuck(v);
02663 if (got_reservation != NULL) *got_reservation = false;
02664 changed_signal = false;
02665 }
02666 break;
02667 }
02668
02669 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02670
02671 if (changed_signal) MarkTileDirtyByTile(tile);
02672
02673 return best_track;
02674 }
02675
02684 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02685 {
02686 assert(v->IsFrontEngine());
02687
02688
02689
02690
02691 if (v->track == TRACK_BIT_DEPOT) {
02692 if (HasDepotReservation(v->tile)) {
02693 if (mark_as_stuck) MarkTrainAsStuck(v);
02694 return false;
02695 } else {
02696
02697 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02698 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02699 }
02700 }
02701
02702 Vehicle *other_train = NULL;
02703 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02704
02705
02706
02707
02708
02709 if (other_train != NULL && other_train->index != v->index) {
02710 if (mark_as_stuck) MarkTrainAsStuck(v);
02711 return false;
02712 }
02713
02714 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02715
02716 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02717 ClrBit(v->flags, VRF_TRAIN_STUCK);
02718 return true;
02719 }
02720
02721
02722 if (v->track == TRACK_BIT_DEPOT) {
02723 SetDepotReservation(v->tile, true);
02724 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02725 }
02726
02727 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02728 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02729 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02730
02731 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02732
02733 bool res_made = false;
02734 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02735
02736 if (!res_made) {
02737
02738 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02739 return false;
02740 }
02741
02742 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02743 v->wait_counter = 0;
02744 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02745 }
02746 ClrBit(v->flags, VRF_TRAIN_STUCK);
02747 return true;
02748 }
02749
02750
02751 static bool CheckReverseTrain(const Train *v)
02752 {
02753 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02754 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02755 !(v->direction & 1)) {
02756 return false;
02757 }
02758
02759 assert(v->track != TRACK_BIT_NONE);
02760
02761 switch (_settings_game.pf.pathfinder_for_trains) {
02762 case VPF_NPF: return NPFTrainCheckReverse(v);
02763 case VPF_YAPF: return YapfTrainCheckReverse(v);
02764
02765 default: NOT_REACHED();
02766 }
02767 }
02768
02769 TileIndex Train::GetOrderStationLocation(StationID station)
02770 {
02771 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02772
02773 const Station *st = Station::Get(station);
02774 if (!(st->facilities & FACIL_TRAIN)) {
02775
02776 this->IncrementRealOrderIndex();
02777 return 0;
02778 }
02779
02780 return st->xy;
02781 }
02782
02783 void Train::MarkDirty()
02784 {
02785 Train *v = this;
02786 do {
02787 v->UpdateViewport(false, false);
02788 } while ((v = v->Next()) != NULL);
02789
02790
02791 this->CargoChanged();
02792 this->UpdateAcceleration();
02793 }
02794
02802 int Train::UpdateSpeed()
02803 {
02804 switch (_settings_game.vehicle.train_acceleration_model) {
02805 default: NOT_REACHED();
02806 case AM_ORIGINAL:
02807 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->gcache.cached_max_track_speed);
02808
02809 case AM_REALISTIC:
02810 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02811 }
02812 }
02813
02818 static bool HandlePossibleBreakdowns(Train *v)
02819 {
02820 assert(v->IsFrontEngine());
02821 for (Train *u = v; u != NULL; u = u->Next()) {
02822 if (u->breakdown_ctr != 0 && (u->IsEngine() || u->IsMultiheaded())) {
02823 if (u->breakdown_ctr <= 2) {
02824 if ( u->HandleBreakdown() ) return true;
02825
02826 } else if (!v->current_order.IsType(OT_LOADING)) {
02827 u->breakdown_ctr--;
02828 }
02829 }
02830 }
02831 return false;
02832 }
02833
02839 static void TrainEnterStation(Train *v, StationID station)
02840 {
02841 v->last_station_visited = station;
02842
02843
02844 Station *st = Station::Get(station);
02845 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02846 st->had_vehicle_of_type |= HVOT_TRAIN;
02847 SetDParam(0, st->index);
02848 AddVehicleNewsItem(
02849 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02850 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
02851 v->index,
02852 st->index
02853 );
02854 AI::NewEvent(v->owner, new AIEventStationFirstVehicle(st->index, v->index));
02855 }
02856
02857 v->force_proceed = TFP_NONE;
02858 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02859
02860 v->BeginLoading();
02861
02862 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02863 }
02864
02865
02866 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02867 {
02868 return
02869 IsInfraTileUsageAllowed(VEH_TRAIN, v->owner, tile) && (
02870 !v->IsFrontEngine() ||
02871 HasBit(v->compatible_railtypes, GetRailType(tile))
02872 );
02873 }
02874
02875 struct RailtypeSlowdownParams {
02876 byte small_turn, large_turn;
02877 byte z_up;
02878 byte z_down;
02879 };
02880
02881 static const RailtypeSlowdownParams _railtype_slowdown[] = {
02882
02883 {256 / 4, 256 / 2, 256 / 4, 2},
02884 {256 / 4, 256 / 2, 256 / 4, 2},
02885 {256 / 4, 256 / 2, 256 / 4, 2},
02886 {0, 256 / 2, 256 / 4, 2},
02887 };
02888
02890 static inline void AffectSpeedByZChange(Train *v, int32 old_z)
02891 {
02892 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02893
02894 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
02895
02896 if (old_z < v->z_pos) {
02897 v->cur_speed -= (v->cur_speed * rsp->z_up >> 8);
02898 } else {
02899 uint16 spd = v->cur_speed + rsp->z_down;
02900 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02901 }
02902 }
02903
02904 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02905 {
02906 if (IsTileType(tile, MP_RAILWAY) &&
02907 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02908 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02909 Trackdir trackdir = FindFirstTrackdir(tracks);
02910 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02911
02912 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02913 }
02914 }
02915 return false;
02916 }
02917
02921 void Train::ReserveTrackUnderConsist() const
02922 {
02923 for (const Train *u = this; u != NULL; u = u->Next()) {
02924 switch (u->track) {
02925 case TRACK_BIT_WORMHOLE:
02926 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02927 break;
02928 case TRACK_BIT_DEPOT:
02929 break;
02930 default:
02931 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02932 break;
02933 }
02934 }
02935 }
02936
02937 uint Train::Crash(bool flooded)
02938 {
02939 uint pass = 0;
02940 if (this->IsFrontEngine()) {
02941 pass += 2;
02942
02943
02944
02945 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02946 for (const Train *v = this; v != NULL; v = v->Next()) {
02947 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02948 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02949
02950
02951 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02952 }
02953 }
02954
02955
02956
02957 TileIndex crossing = TrainApproachingCrossingTile(this);
02958 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02959
02960
02961 HideFillingPercent(&this->fill_percent_te_id);
02962 }
02963
02964 pass += this->GroundVehicleBase::Crash(flooded);
02965
02966 this->crash_anim_pos = flooded ? 4000 : 1;
02967 return pass;
02968 }
02969
02976 static uint TrainCrashed(Train *v)
02977 {
02978 uint num = 0;
02979
02980
02981 if (!(v->vehstatus & VS_CRASHED)) {
02982 num = v->Crash();
02983 AI::NewEvent(v->owner, new AIEventVehicleCrashed(v->index, v->tile, AIEventVehicleCrashed::CRASH_TRAIN));
02984 }
02985
02986
02987
02988 v->ReserveTrackUnderConsist();
02989
02990 return num;
02991 }
02992
02993 struct TrainCollideChecker {
02994 Train *v;
02995 uint num;
02996 };
02997
02998 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02999 {
03000 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
03001
03002
03003 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
03004
03005
03006 if (v->owner != tcc->v->owner) return NULL;
03007
03008
03009 Train *coll = Train::From(v)->First();
03010
03011
03012 if (coll == tcc->v) return NULL;
03013
03014 int x_diff = v->x_pos - tcc->v->x_pos;
03015 int y_diff = v->y_pos - tcc->v->y_pos;
03016
03017
03018
03019
03020
03021 uint hash = (y_diff + 7) | (x_diff + 7);
03022 if (hash & ~15) return NULL;
03023
03024
03025 if (x_diff * x_diff + y_diff * y_diff > 25) return NULL;
03026
03027
03028 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03029
03030
03031 tcc->num += TrainCrashed(tcc->v);
03032 tcc->num += TrainCrashed(coll);
03033
03034 return NULL;
03035 }
03036
03043 static bool CheckTrainCollision(Train *v)
03044 {
03045
03046 if (v->track == TRACK_BIT_DEPOT) return false;
03047
03048 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03049
03050 TrainCollideChecker tcc;
03051 tcc.v = v;
03052 tcc.num = 0;
03053
03054
03055 if (v->track == TRACK_BIT_WORMHOLE) {
03056 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03057 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03058 } else {
03059 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03060 }
03061
03062
03063 if (tcc.num == 0) return false;
03064
03065 SetDParam(0, tcc.num);
03066 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
03067 NS_ACCIDENT,
03068 v->index
03069 );
03070
03071 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03072 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03073 return true;
03074 }
03075
03076 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03077 {
03078 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03079
03080 Train *t = Train::From(v);
03081 DiagDirection exitdir = *(DiagDirection *)data;
03082
03083
03084 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03085
03086 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03087
03088 return t;
03089 }
03090
03092 static Vehicle *FindSpaceBetweenTrainsEnum(Vehicle *v, void *data)
03093 {
03094
03095 if (v->type != VEH_TRAIN || (v->Previous() != NULL && v->Next() != NULL)) return NULL;
03096
03097 const Vehicle *u = (Vehicle*)data;
03098 int32 a, b = 0;
03099
03100 switch (u->direction) {
03101 default: NOT_REACHED();
03102 case DIR_NE: a = u->x_pos; b = v->x_pos; break;
03103 case DIR_SE: a = v->y_pos; b = u->y_pos; break;
03104 case DIR_SW: a = v->x_pos; b = u->x_pos; break;
03105 case DIR_NW: a = u->y_pos; b = v->y_pos; break;
03106 }
03107
03108 if (a > b && a <= (b + (int)(Train::From(u)->wait_counter)) + (int)(TILE_SIZE)) return v;
03109 return NULL;
03110 }
03111
03112 static bool IsToCloseBehindTrain(Vehicle *v, TileIndex tile, bool check_endtile)
03113 {
03114 Train *t = (Train *)v;
03115
03116 if (t->force_proceed != 0) return false;
03117
03118 if (HasVehicleOnPos(t->tile, v, &FindSpaceBetweenTrainsEnum)) {
03119
03120 if (DirToDiagDir(t->direction) != GetTunnelBridgeDirection(t->tile)) {
03121 v->cur_speed = 0;
03122 ToggleBit(t->flags, VRF_REVERSING);
03123 }
03124 return true;
03125 }
03126
03127 if (check_endtile){
03128 if (HasVehicleOnPos(GetOtherTunnelBridgeEnd(t->tile), v, &FindSpaceBetweenTrainsEnum)) {
03129
03130 if (DirToDiagDir(t->direction) != GetTunnelBridgeDirection(t->tile)) {
03131 v->cur_speed = 0;
03132 ToggleBit(t->flags, VRF_REVERSING);
03133 }
03134 return true;
03135 }
03136 }
03137
03138 return false;
03139 }
03140
03142 static bool CheckTrainStayInWormHole(Train *t, TileIndex tile)
03143 {
03144 if (t->force_proceed != 0) return false;
03145
03146
03147 if (!IsTunnelBridgeExit(tile)) {
03148 t->cur_speed = 0;
03149 ToggleBit(t->flags, VRF_REVERSING);
03150 return true;
03151 }
03152 SigSegState seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, t->owner);
03153 if (seg_state == SIGSEG_FULL || (seg_state == SIGSEG_PBS && !TryPathReserve(t))) {
03154 t->cur_speed = 0;
03155 return true;
03156 }
03157
03158 return false;
03159 }
03160
03161 static void HandleSignalBehindTrain(Train *v, uint signal_number)
03162 {
03163 TileIndex tile;
03164 switch (v->direction) {
03165 default: NOT_REACHED();
03166 case DIR_NE: tile = TileVirtXY(v->x_pos + bridge_signal_block_size, v->y_pos); break;
03167 case DIR_SE: tile = TileVirtXY(v->x_pos, v->y_pos - bridge_signal_block_size ); break;
03168 case DIR_SW: tile = TileVirtXY(v->x_pos - bridge_signal_block_size, v->y_pos); break;
03169 case DIR_NW: tile = TileVirtXY(v->x_pos, v->y_pos + bridge_signal_block_size); break;
03170 }
03171
03172 if(tile == v->tile) {
03173
03174 if (IsTunnelBridgeWithSignRed(tile)) {
03175 ClrBitTunnelBridgeExit(tile);
03176 MarkTileDirtyByTile(tile);
03177 }
03178 } else if (IsBridge(v->tile) && signal_number <= 16) {
03179 ClrBit(_m[v->tile].m2, signal_number);
03180 MarkTileDirtyByTile(tile);
03181 }
03182 }
03183
03184 static void TrainController(Train *v, Vehicle *nomove)
03185 {
03186 Train *first = v->First();
03187 Train *prev;
03188 bool direction_changed = false;
03189
03190
03191 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03192 DiagDirection enterdir = DIAGDIR_BEGIN;
03193 bool update_signals_crossing = false;
03194
03195
03196 if (v->signal_speedlimit > 0)
03197 v->cur_speed = min(v->cur_speed, v->signal_speedlimit);
03198
03199 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03200 if (v->track != TRACK_BIT_WORMHOLE) {
03201
03202 if (gp.old_tile == gp.new_tile) {
03203
03204 if (v->track == TRACK_BIT_DEPOT) {
03205
03206 gp.x = v->x_pos;
03207 gp.y = v->y_pos;
03208 v->signal_speedlimit = 0;
03209 } else {
03210
03211
03212
03213 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v)) return;
03214
03215 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03216 if (HasBit(r, VETS_CANNOT_ENTER)) {
03217 goto invalid_rail;
03218 }
03219 if (HasBit(r, VETS_ENTERED_STATION)) {
03220
03221 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03222 }
03223 }
03224 } else {
03225
03226
03227
03228 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03229 assert(IsValidDiagDirection(enterdir));
03230
03231
03232
03233 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03234 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03235
03236 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03237 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03238
03239 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03240 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03241
03242
03243 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03244 }
03245
03246 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03247
03248
03249
03250 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03251
03252 TrackBits chosen_track;
03253 if (prev == NULL) {
03254
03255
03256 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03257 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03258
03259 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03260
03261
03262
03263
03264 Trackdir dir = FindFirstTrackdir(trackdirbits);
03265 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03266 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03267
03268
03269 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03270 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03271 }
03272 }
03273
03274
03275 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03276
03277 Trackdir i = FindFirstTrackdir(trackdirbits);
03278
03279
03280 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return;
03281
03282
03283 IncreaseStuckCounter(v->tile);
03284 if (v->tick_counter % 4 == 0) IncreaseStuckCounter(v->tile);
03285
03286 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03287 v->cur_speed = 0;
03288 v->subspeed = 0;
03289 v->progress = 255 - 100;
03290 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return;
03291 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03292 v->cur_speed = 0;
03293 v->subspeed = 0;
03294 v->progress = 255 - 10;
03295 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03296 DiagDirection exitdir = TrackdirToExitdir(i);
03297 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03298
03299 exitdir = ReverseDiagDir(exitdir);
03300
03301
03302 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return;
03303 }
03304 }
03305
03306
03307
03308
03309
03310 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03311 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03312 v->wait_counter = 0;
03313 return;
03314 }
03315 goto reverse_train_direction;
03316 } else {
03317 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03318 }
03319 } else {
03320
03321 if (prev->tile == gp.new_tile) {
03322
03323 if (prev->track == TRACK_BIT_WORMHOLE) {
03324
03325
03326 assert(IsTunnel(prev->tile));
03327 chosen_track = bits;
03328 } else {
03329 chosen_track = prev->track;
03330 }
03331 } else {
03332
03333
03334
03335
03336
03337
03338
03339 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03340 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03341 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03342 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03343 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03344 };
03345 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03346 assert(IsValidDiagDirection(exitdir));
03347 chosen_track = _connecting_track[enterdir][exitdir];
03348 }
03349 chosen_track &= bits;
03350 }
03351
03352
03353 assert(
03354 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03355 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03356 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03357
03358
03359 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03360 gp.x = (gp.x & ~0xF) | b[0];
03361 gp.y = (gp.y & ~0xF) | b[1];
03362 Direction chosen_dir = (Direction)b[2];
03363
03364
03365 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03366 if (HasBit(r, VETS_CANNOT_ENTER)) {
03367 goto invalid_rail;
03368 }
03369
03370 if (HasWormholeSignals(gp.new_tile)) {
03371
03372 if (v->IsFrontEngine() && v->force_proceed == 0) {
03373 if (IsTunnelBridgeWithSignRed(gp.new_tile)) {
03374 v->cur_speed = 0;
03375 return;
03376 }
03377 if (IsTunnelBridgeExit(gp.new_tile)) {
03378 v->cur_speed = 0;
03379 goto invalid_rail;
03380 }
03381
03382 SetBitTunnelBridgeExit(gp.new_tile);
03383 MarkTileDirtyByTile(gp.new_tile);
03384 }
03385 }
03386
03387 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03388 Track track = FindFirstTrack(chosen_track);
03389 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03390 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03391 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03392 MarkTileDirtyByTile(gp.new_tile);
03393 }
03394
03395
03396 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03397
03398 v->tile = gp.new_tile;
03399
03400 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03401 v->First()->RailtypeChanged();
03402 }
03403
03404 v->track = chosen_track;
03405 assert(v->track);
03406 }
03407
03408
03409
03410 update_signals_crossing = true;
03411
03412 if (chosen_dir != v->direction) {
03413 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03414 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03415 DirDiff diff = DirDifference(v->direction, chosen_dir);
03416 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? rsp->small_turn : rsp->large_turn) * v->cur_speed >> 8;
03417 }
03418 direction_changed = true;
03419 v->direction = chosen_dir;
03420 }
03421
03422 if (v->IsFrontEngine()) {
03423 v->wait_counter = 0;
03424
03425
03426 TileIndex crossing = TrainApproachingCrossingTile(v);
03427 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03428
03429
03430 CheckNextTrainTile(v);
03431 }
03432
03433 if (HasBit(r, VETS_ENTERED_STATION)) {
03434
03435 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03436 }
03437 }
03438 } else {
03439
03440
03441
03442 if (!(v->vehstatus & VS_HIDDEN)) {
03443 Train *first = v->First();
03444 first->cur_speed = min(first->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03445 }
03446
03447
03448 TileIndex old_tile = TileVirtXY(v->x_pos, v->y_pos);
03449 if (old_tile != gp.new_tile && HasWormholeSignals(v->tile) && (v->IsFrontEngine() || v->Next() == NULL)){
03450 if (old_tile == v->tile) {
03451 if (v->IsFrontEngine() && v->force_proceed == 0 && IsTunnelBridgeExit(v->tile)) goto invalid_rail;
03452
03453 v->wait_counter = bridge_signal_block_size - TILE_SIZE;
03454 v->load_unload_ticks = 0;
03455 }
03456
03457 int distance = v->wait_counter;
03458 bool leaving = false;
03459 if (distance == 0) v->wait_counter = bridge_signal_block_size;
03460
03461 if (v->IsFrontEngine()) {
03462
03463 int z = GetSlopeZ(gp.x, gp.y) - v->z_pos;
03464 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && !(abs(z) > 2)) {
03465 if (CheckTrainStayInWormHole(v, gp.new_tile)) return;
03466 leaving = true;
03467 } else {
03468 if (IsToCloseBehindTrain(v, gp.new_tile, distance == 0)) {
03469 if (distance == 0) v->wait_counter = 0;
03470 v->cur_speed = 0;
03471 return;
03472 }
03473
03474 if (distance == 0 && v->load_unload_ticks <= 15 && IsBridge(v->tile)){
03475 SetBit(_m[v->tile].m2, v->load_unload_ticks);
03476 MarkTileDirtyByTile(gp.new_tile);
03477 }
03478 }
03479 }
03480 if (v->Next() == NULL) {
03481 if (v->load_unload_ticks > 0 && v->load_unload_ticks <= 16 && distance == bridge_signal_block_size - TILE_SIZE) HandleSignalBehindTrain(v, v->load_unload_ticks - 2);
03482 if (old_tile == v->tile) {
03483
03484 v->x_pos = gp.x;
03485 v->y_pos = gp.y;
03486 UpdateSignalsOnSegment(old_tile, INVALID_DIAGDIR, v->owner);
03487 }
03488 }
03489 if (distance == 0) v->load_unload_ticks++;
03490 v->wait_counter -= TILE_SIZE;
03491
03492 if (leaving) {
03493 v->force_proceed = 0;
03494 v->wait_counter = 0;
03495 v->load_unload_ticks = 0;
03496 v->x_pos = gp.x;
03497 v->y_pos = gp.y;
03498 VehicleMove(v, !(v->vehstatus & VS_HIDDEN));
03499 UpdateSignalsOnSegment(gp.new_tile, INVALID_DIAGDIR, v->owner);
03500 continue;
03501 }
03502 }
03503
03504 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03505
03506 if (v->IsFrontEngine()) {
03507 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03508 CheckNextTrainTile(v);
03509 }
03510
03511
03512 if (gp.old_tile == gp.new_tile) {
03513 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03514 }
03515 } else {
03516 v->x_pos = gp.x;
03517 v->y_pos = gp.y;
03518 VehicleMove(v, v->IsDrawn());
03519 continue;
03520 }
03521 }
03522
03523
03524 v->UpdateDeltaXY(v->direction);
03525
03526 v->x_pos = gp.x;
03527 v->y_pos = gp.y;
03528
03529
03530 int32 old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03531
03532 if (prev == NULL) {
03533
03534 AffectSpeedByZChange(v, old_z);
03535 }
03536
03537 if (update_signals_crossing) {
03538 if (v->IsFrontEngine()) {
03539 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03540
03541
03542
03543
03544
03545
03546
03547
03548 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03549 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03550 !TryPathReserve(v)) {
03551 MarkTrainAsStuck(v);
03552 }
03553 }
03554 }
03555
03556
03557
03558 if (v->Next() == NULL) {
03559 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03560 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03561 }
03562 }
03563
03564
03565 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03566 }
03567
03568 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03569
03570 return;
03571
03572 invalid_rail:
03573
03574 if (prev != NULL) error("Disconnecting train");
03575
03576 reverse_train_direction:
03577 v->wait_counter = 0;
03578 v->cur_speed = 0;
03579 v->subspeed = 0;
03580 ReverseTrainDirection(v);
03581 }
03582
03589 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03590 {
03591 TrackBits *trackbits = (TrackBits *)data;
03592
03593 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03594 TrackBits train_tbits = Train::From(v)->track;
03595 if (train_tbits == TRACK_BIT_WORMHOLE) {
03596
03597 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03598 } else if (train_tbits != TRACK_BIT_DEPOT) {
03599 *trackbits |= train_tbits;
03600 }
03601 }
03602
03603 return NULL;
03604 }
03605
03613 static void DeleteLastWagon(Train *v)
03614 {
03615 Train *first = v->First();
03616
03617
03618
03619
03620 Train *u = v;
03621 for (; v->Next() != NULL; v = v->Next()) u = v;
03622 u->SetNext(NULL);
03623
03624 if (first != v) {
03625
03626 first->ConsistChanged(false);
03627
03628
03629 if (first->track == TRACK_BIT_DEPOT) {
03630 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03631 }
03632 }
03633
03634
03635 TrackBits trackbits = v->track;
03636 TileIndex tile = v->tile;
03637 Owner owner = v->owner;
03638
03639 delete v;
03640 v = NULL;
03641
03642 if (trackbits == TRACK_BIT_WORMHOLE) {
03643
03644 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03645 }
03646
03647 Track track = TrackBitsToTrack(trackbits);
03648 if (HasReservedTracks(tile, trackbits)) {
03649 UnreserveRailTrack(tile, track);
03650
03651
03652 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03653 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03654
03655
03656 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03657 Track t;
03658 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03659 }
03660
03661
03662 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03663
03664
03665 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03666 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03667 } else {
03668 SetSignalsOnBothDir(tile, track, owner);
03669 }
03670 }
03671
03676 static void ChangeTrainDirRandomly(Train *v)
03677 {
03678 static const DirDiff delta[] = {
03679 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03680 };
03681
03682 do {
03683
03684 if (!(v->vehstatus & VS_HIDDEN)) {
03685 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03686 v->UpdateDeltaXY(v->direction);
03687 v->cur_image = v->GetImage(v->direction);
03688
03689
03690
03691 if (v->track != TRACK_BIT_WORMHOLE) v->UpdateInclination(false, false);
03692 }
03693 } while ((v = v->Next()) != NULL);
03694 }
03695
03701 static bool HandleCrashedTrain(Train *v)
03702 {
03703 int state = ++v->crash_anim_pos;
03704
03705 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03706 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03707 }
03708
03709 uint32 r;
03710 if (state <= 200 && Chance16R(1, 7, r)) {
03711 int index = (r * 10 >> 16);
03712
03713 Vehicle *u = v;
03714 do {
03715 if (--index < 0) {
03716 r = Random();
03717
03718 CreateEffectVehicleRel(u,
03719 GB(r, 8, 3) + 2,
03720 GB(r, 16, 3) + 2,
03721 GB(r, 0, 3) + 5,
03722 EV_EXPLOSION_SMALL);
03723 break;
03724 }
03725 } while ((u = u->Next()) != NULL);
03726 }
03727
03728 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03729
03730 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03731 bool ret = v->Next() != NULL;
03732 DeleteLastWagon(v);
03733 return ret;
03734 }
03735
03736 return true;
03737 }
03738
03740 static const uint16 _breakdown_speeds[16] = {
03741 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03742 };
03743
03744
03752 static bool TrainApproachingLineEnd(Train *v, bool signal)
03753 {
03754
03755 uint x = v->x_pos & 0xF;
03756 uint y = v->y_pos & 0xF;
03757
03758
03759
03760 switch (v->direction) {
03761 case DIR_N : x = ~x + ~y + 25; break;
03762 case DIR_NW: x = y;
03763 case DIR_NE: x = ~x + 16; break;
03764 case DIR_E : x = ~x + y + 9; break;
03765 case DIR_SE: x = y; break;
03766 case DIR_S : x = x + y - 7; break;
03767 case DIR_W : x = ~y + x + 9; break;
03768 default: break;
03769 }
03770
03771
03772
03773
03774
03775
03776
03777 if (!signal && x + VEHICLE_LENGTH / 2 >= TILE_SIZE) {
03778
03779 v->cur_speed = 0;
03780 ReverseTrainDirection(v);
03781 return false;
03782 }
03783
03784
03785 v->vehstatus |= VS_TRAIN_SLOWING;
03786 uint16 break_speed = _breakdown_speeds[x & 0xF];
03787 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03788
03789 return true;
03790 }
03791
03792
03798 static bool TrainCanLeaveTile(const Train *v)
03799 {
03800
03801 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03802
03803 TileIndex tile = v->tile;
03804
03805
03806 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03807 DiagDirection dir = GetTunnelBridgeDirection(tile);
03808 if (DiagDirToDir(dir) == v->direction) return false;
03809 }
03810
03811
03812 if (IsRailDepotTile(tile)) {
03813 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03814 if (DiagDirToDir(dir) == v->direction) return false;
03815 }
03816
03817 return true;
03818 }
03819
03820
03828 static TileIndex TrainApproachingCrossingTile(const Train *v)
03829 {
03830 assert(v->IsFrontEngine());
03831 assert(!(v->vehstatus & VS_CRASHED));
03832
03833 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03834
03835 DiagDirection dir = TrainExitDir(v->direction, v->track);
03836 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03837
03838
03839 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03840 !CheckCompatibleRail(v, tile)) {
03841 return INVALID_TILE;
03842 }
03843
03844 return tile;
03845 }
03846
03847
03854 static bool TrainCheckIfLineEnds(Train *v)
03855 {
03856
03857
03858 if(HasBit(v->flags, VRF_BREAKDOWN_BRAKING)) {
03859 v->vehstatus |= VS_TRAIN_SLOWING;
03860 } else {
03861 v->vehstatus &= ~VS_TRAIN_SLOWING;
03862 }
03863
03864 if (!TrainCanLeaveTile(v)) return true;
03865
03866
03867 DiagDirection dir = TrainExitDir(v->direction, v->track);
03868
03869 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03870
03871
03872 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03873 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03874
03875 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03876 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03877
03878
03879
03880
03881 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03882 if (_settings_game.pf.forbid_90_deg) {
03883 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03884 }
03885
03886
03887 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03888 return TrainApproachingLineEnd(v, false);
03889 }
03890
03891
03892 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true);
03893
03894
03895 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03896
03897 return true;
03898 }
03899
03900
03901 static bool TrainLocoHandler(Train *v, bool mode)
03902 {
03903
03904 if (v->vehstatus & VS_CRASHED) {
03905 return mode ? true : HandleCrashedTrain(v);
03906 }
03907
03908 if (v->force_proceed != TFP_NONE) {
03909 ClrBit(v->flags, VRF_TRAIN_STUCK);
03910 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03911 }
03912
03913
03914 if ( HandlePossibleBreakdowns(v) ) return true;
03915
03916 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03917 ReverseTrainDirection(v);
03918 }
03919
03920
03921 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03922
03923 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03924 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03925 v->wait_counter = 0;
03926 v->cur_speed = 0;
03927 v->subspeed = 0;
03928 ClrBit(v->flags, VRF_LEAVING_STATION);
03929 ReverseTrainDirection(v);
03930 return true;
03931 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03932
03933
03934
03935 DiagDirection dir = TrainExitDir(v->direction, v->track);
03936 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03937
03938 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03939 TryPathReserve(v, true, true);
03940 }
03941 ClrBit(v->flags, VRF_LEAVING_STATION);
03942 }
03943
03944 v->HandleLoading(mode);
03945
03946 if (v->current_order.IsType(OT_LOADING)) return true;
03947
03948 if (CheckTrainStayInDepot(v)) return true;
03949
03950 if (!mode) v->ShowVisualEffect();
03951
03952
03953 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03954 CheckNextTrainTile(v);
03955 }
03956
03957
03958 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03959 ++v->wait_counter;
03960 if (v->tick_counter % 4 == 0) IncreaseStuckCounter(v->tile);
03961
03962
03963 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03964
03965 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03966 if (!TryPathReserve(v)) {
03967
03968 if (turn_around) ReverseTrainDirection(v);
03969
03970 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03971
03972 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03973 SetDParam(0, v->index);
03974 AddVehicleNewsItem(
03975 STR_NEWS_TRAIN_IS_STUCK,
03976 NS_ADVICE,
03977 v->index
03978 );
03979 }
03980 v->wait_counter = 0;
03981 }
03982
03983 if (v->force_proceed == TFP_NONE) return true;
03984 ClrBit(v->flags, VRF_TRAIN_STUCK);
03985 v->wait_counter = 0;
03986 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03987 }
03988 }
03989
03990 if (v->current_order.IsType(OT_LEAVESTATION)) {
03991 v->current_order.Free();
03992 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03993 return true;
03994 }
03995
03996 int j = v->UpdateSpeed();
03997
03998
03999 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
04000
04001 v->force_proceed = TFP_NONE;
04002 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
04003 }
04004
04005 int adv_spd = v->GetAdvanceDistance();
04006 if (j < adv_spd) {
04007
04008 if (v->cur_speed == 0) v->SetLastSpeed();
04009 } else {
04010 TrainCheckIfLineEnds(v);
04011
04012 for (;;) {
04013 j -= adv_spd;
04014 TrainController(v, NULL);
04015
04016 if (CheckTrainCollision(v)) break;
04017
04018 adv_spd = v->GetAdvanceDistance();
04019
04020
04021 if (j < adv_spd || v->cur_speed == 0) break;
04022
04023 OrderType order_type = v->current_order.GetType();
04024
04025 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
04026 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
04027 IsTileType(v->tile, MP_STATION) &&
04028 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
04029 ProcessOrders(v);
04030 }
04031 }
04032 v->SetLastSpeed();
04033 }
04034
04035 for (Train *u = v; u != NULL; u = u->Next()) {
04036 if (!u->IsDrawn()) continue;
04037
04038 u->UpdateViewport(false, false);
04039 }
04040
04041 if (v->progress == 0) v->progress = j;
04042
04043 return true;
04044 }
04045
04046
04047
04048 Money Train::GetRunningCost() const
04049 {
04050 Money cost = 0;
04051 const Train *v = this;
04052
04053 do {
04054 const Engine *e = Engine::Get(v->engine_type);
04055 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
04056
04057 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
04058 if (cost_factor == 0) continue;
04059
04060
04061 if (v->IsMultiheaded()) cost_factor /= 2;
04062
04063 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->grf_prop.grffile);
04064 } while ((v = v->GetNextVehicle()) != NULL);
04065
04066 return cost;
04067 }
04068
04069
04070 bool Train::Tick()
04071 {
04072 this->tick_counter++;
04073
04074 if (this->IsFrontEngine()) {
04075 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
04076
04077 this->current_order_time++;
04078
04079 if (!TrainLocoHandler(this, false)) return false;
04080
04081 return TrainLocoHandler(this, true);
04082 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
04083
04084 if (++this->crash_anim_pos >= 4400) {
04085 delete this;
04086 return false;
04087 }
04088 }
04089
04090 return true;
04091 }
04092
04093 static void CheckIfTrainNeedsService(Train *v)
04094 {
04095 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
04096 if (v->IsInDepot()) {
04097 VehicleServiceInDepot(v);
04098 return;
04099 }
04100
04101 uint max_penalty;
04102 switch (_settings_game.pf.pathfinder_for_trains) {
04103 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
04104 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
04105 default: NOT_REACHED();
04106 }
04107
04108 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
04109
04110 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
04111 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
04112
04113
04114
04115 v->current_order.MakeDummy();
04116 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04117 }
04118 return;
04119 }
04120
04121 DepotID depot = GetDepotIndex(tfdd.tile);
04122
04123 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
04124 v->current_order.GetDestination() != depot &&
04125 !Chance16(3, 16)) {
04126 return;
04127 }
04128
04129 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
04130 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
04131 v->dest_tile = tfdd.tile;
04132 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04133 }
04134
04135 void Train::OnNewDay()
04136 {
04137 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
04138
04139 if (this->IsFrontEngine()) {
04140 AgeVehicle(this);
04141
04142 CheckIfTrainNeedsService(this);
04143
04144 CheckOrders(this);
04145
04146
04147 if (this->current_order.IsType(OT_GOTO_STATION)) {
04148 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
04149 if (tile != INVALID_TILE) this->dest_tile = tile;
04150 }
04151
04152 if (this->running_ticks != 0) {
04153
04154 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
04155
04156
04157 PayDailyTrackSharingFee(this);
04158
04159 this->profit_this_year -= cost.GetCost();
04160 this->running_ticks = 0;
04161
04162 SubtractMoneyFromCompanyFract(this->owner, cost);
04163
04164 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
04165 SetWindowClassesDirty(WC_TRAINS_LIST);
04166 }
04167 } else if (this->IsEngine()) {
04168
04169 AgeVehicle(this);
04170 }
04171
04172 if(IsEngine() || IsMultiheaded()) {
04173 CheckVehicleBreakdown(this);
04174 }
04175 }
04176
04177 Trackdir Train::GetVehicleTrackdir() const
04178 {
04179 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
04180
04181 if (this->track == TRACK_BIT_DEPOT) {
04182
04183 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
04184 }
04185
04186 if (this->track == TRACK_BIT_WORMHOLE) {
04187
04188 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
04189 }
04190
04191 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04192 }
04193
04199 void DeleteVisibleTrain(Train *v)
04200 {
04201 FreeTrainTrackReservation(v);
04202 TileIndex crossing = TrainApproachingCrossingTile(v);
04203
04204
04205 Train *u;
04206 Train *prev = v->Last();
04207 do {
04208 u = prev;
04209 prev = u->Previous();
04210 if (prev != NULL) prev->SetNext(NULL);
04211
04212
04213 TileIndex tile = u->tile;
04214 TrackBits trackbits = u->track;
04215
04216 delete u;
04217
04218 if (trackbits == TRACK_BIT_WORMHOLE) {
04219
04220 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
04221 }
04222
04223 Track track = TrackBitsToTrack(trackbits);
04224 if (HasReservedTracks(tile, trackbits)) UnreserveRailTrack(tile, track);
04225 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
04226
04227
04228 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
04229 AddSideToSignalBuffer(tile, INVALID_DIAGDIR, GetTileOwner(tile));
04230 } else {
04231 AddTrackToSignalBuffer(tile, track, GetTileOwner(tile));
04232 }
04233 } while (prev != NULL);
04234
04235 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
04236
04237 UpdateSignalsInBuffer();
04238 }