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00012 #include "stdafx.h"
00013 #include "error.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 "newgrf_sound.h"
00021 #include "newgrf_text.h"
00022 #include "strings_func.h"
00023 #include "viewport_func.h"
00024 #include "vehicle_func.h"
00025 #include "sound_func.h"
00026 #include "ai/ai.hpp"
00027 #include "game/game.hpp"
00028 #include "newgrf_station.h"
00029 #include "effectvehicle_func.h"
00030 #include "network/network.h"
00031 #include "spritecache.h"
00032 #include "core/random_func.hpp"
00033 #include "company_base.h"
00034 #include "newgrf.h"
00035 #include "order_backup.h"
00036 #include "zoom_func.h"
00037
00038 #include "table/strings.h"
00039 #include "table/train_cmd.h"
00040
00041 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00042 static bool TrainCheckIfLineEnds(Train *v, bool reverse = true);
00043 bool TrainController(Train *v, Vehicle *nomove, bool reverse = true);
00044 static TileIndex TrainApproachingCrossingTile(const Train *v);
00045 static void CheckIfTrainNeedsService(Train *v);
00046 static void CheckNextTrainTile(Train *v);
00047
00048 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00049 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00050
00051
00059 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00060 {
00061 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00062
00063 DiagDirection diagdir = DirToDiagDir(direction);
00064
00065
00066 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00067 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00068 }
00069
00070 return diagdir;
00071 }
00072
00073
00079 byte FreightWagonMult(CargoID cargo)
00080 {
00081 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00082 return _settings_game.vehicle.freight_trains;
00083 }
00084
00086 void CheckTrainsLengths()
00087 {
00088 const Train *v;
00089 bool first = true;
00090
00091 FOR_ALL_TRAINS(v) {
00092 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00093 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00094 if (u->track != TRACK_BIT_DEPOT) {
00095 if ((w->track != TRACK_BIT_DEPOT &&
00096 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->CalcNextVehicleOffset()) ||
00097 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00098 SetDParam(0, v->index);
00099 SetDParam(1, v->owner);
00100 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00101
00102 if (!_networking && first) {
00103 first = false;
00104 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00105 }
00106
00107 break;
00108 }
00109 }
00110 }
00111 }
00112 }
00113 }
00114
00121 void Train::ConsistChanged(bool same_length)
00122 {
00123 uint16 max_speed = UINT16_MAX;
00124
00125 assert(this->IsFrontEngine() || this->IsFreeWagon());
00126
00127 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00128 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00129 this->gcache.cached_total_length = 0;
00130 this->compatible_railtypes = RAILTYPES_NONE;
00131
00132 bool train_can_tilt = true;
00133
00134 for (Train *u = this; u != NULL; u = u->Next()) {
00135 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00136
00137
00138 assert(u->First() == this);
00139
00140
00141 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00142 u->railtype = rvi_u->railtype;
00143
00144 if (u->IsEngine()) first_engine = u->engine_type;
00145
00146
00147 u->tcache.user_def_data = rvi_u->user_def_data;
00148 this->InvalidateNewGRFCache();
00149 u->InvalidateNewGRFCache();
00150 }
00151
00152 for (Train *u = this; u != NULL; u = u->Next()) {
00153
00154 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00155 this->InvalidateNewGRFCache();
00156 u->InvalidateNewGRFCache();
00157 }
00158
00159 for (Train *u = this; u != NULL; u = u->Next()) {
00160 const Engine *e_u = u->GetEngine();
00161 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00162
00163 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00164
00165
00166 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00167
00168
00169 u->colourmap = PAL_NONE;
00170
00171
00172 u->UpdateVisualEffect(true);
00173
00174 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00175 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00176
00177 SetBit(u->flags, VRF_POWEREDWAGON);
00178 } else {
00179 ClrBit(u->flags, VRF_POWEREDWAGON);
00180 }
00181
00182 if (!u->IsArticulatedPart()) {
00183
00184
00185 if (rvi_u->power > 0) {
00186 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00187 }
00188
00189
00190
00191 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00192 u->railtype = RAILTYPE_RAIL;
00193 u->compatible_railtypes |= RAILTYPES_RAIL;
00194 }
00195
00196
00197 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00198 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00199 if (speed != 0) max_speed = min(speed, max_speed);
00200 }
00201 }
00202
00203 u->cargo_cap = e_u->DetermineCapacity(u);
00204 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00205
00206
00207 uint16 veh_len = CALLBACK_FAILED;
00208 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00209
00210 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00211
00212 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00213 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00214 }
00215 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00216
00217 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00218 }
00219 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00220 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00221
00222
00223 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00224
00225
00226 if (!same_length) u->gcache.cached_veh_length = veh_len;
00227
00228 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00229 this->InvalidateNewGRFCache();
00230 u->InvalidateNewGRFCache();
00231 }
00232
00233
00234 this->vcache.cached_max_speed = max_speed;
00235 this->tcache.cached_tilt = train_can_tilt;
00236 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00237
00238
00239 this->CargoChanged();
00240
00241 if (this->IsFrontEngine()) {
00242 this->UpdateAcceleration();
00243 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00244 InvalidateWindowData(WC_VEHICLE_REFIT, this->index, VIWD_CONSIST_CHANGED);
00245 InvalidateWindowData(WC_VEHICLE_ORDERS, this->index, VIWD_CONSIST_CHANGED);
00246 }
00247 }
00248
00259 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00260 {
00261 const Station *st = Station::Get(station_id);
00262 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00263 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00264
00265
00266
00267 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00268 if (v->gcache.cached_total_length >= *station_length) {
00269
00270 osl = OSL_PLATFORM_FAR_END;
00271 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00272 osl = v->current_order.GetStopLocation();
00273 }
00274
00275
00276 int stop;
00277 switch (osl) {
00278 default: NOT_REACHED();
00279
00280 case OSL_PLATFORM_NEAR_END:
00281 stop = v->gcache.cached_total_length;
00282 break;
00283
00284 case OSL_PLATFORM_MIDDLE:
00285 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00286 break;
00287
00288 case OSL_PLATFORM_FAR_END:
00289 stop = *station_length;
00290 break;
00291 }
00292
00293
00294
00295 return stop - (v->gcache.cached_veh_length + 1) / 2;
00296 }
00297
00298
00303 int Train::GetCurveSpeedLimit() const
00304 {
00305 assert(this->First() == this);
00306
00307 static const int absolute_max_speed = UINT16_MAX;
00308 int max_speed = absolute_max_speed;
00309
00310 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00311
00312 int curvecount[2] = {0, 0};
00313
00314
00315 int numcurve = 0;
00316 int sum = 0;
00317 int pos = 0;
00318 int lastpos = -1;
00319 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00320 Direction this_dir = u->direction;
00321 Direction next_dir = u->Next()->direction;
00322
00323 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00324 if (dirdiff == DIRDIFF_SAME) continue;
00325
00326 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00327 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00328 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00329 if (lastpos != -1) {
00330 numcurve++;
00331 sum += pos - lastpos;
00332 if (pos - lastpos == 1 && max_speed > 88) {
00333 max_speed = 88;
00334 }
00335 }
00336 lastpos = pos;
00337 }
00338
00339
00340 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00341 max_speed = 61;
00342 }
00343 }
00344
00345 if (numcurve > 0 && max_speed > 88) {
00346 if (curvecount[0] == 1 && curvecount[1] == 1) {
00347 max_speed = absolute_max_speed;
00348 } else {
00349 sum /= numcurve;
00350 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00351 }
00352 }
00353
00354 if (max_speed != absolute_max_speed) {
00355
00356 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00357 max_speed += (max_speed / 2) * rti->curve_speed;
00358
00359 if (this->tcache.cached_tilt) {
00360
00361 max_speed += max_speed / 5;
00362 }
00363 }
00364
00365 return max_speed;
00366 }
00367
00372 int Train::GetCurrentMaxSpeed() const
00373 {
00374 int max_speed = _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL ?
00375 this->gcache.cached_max_track_speed :
00376 this->tcache.cached_max_curve_speed;
00377
00378 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && IsRailStationTile(this->tile)) {
00379 StationID sid = GetStationIndex(this->tile);
00380 if (this->current_order.ShouldStopAtStation(this, sid)) {
00381 int station_ahead;
00382 int station_length;
00383 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00384
00385
00386
00387 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00388
00389 if (distance_to_go > 0) {
00390 int st_max_speed = 120;
00391
00392 int delta_v = this->cur_speed / (distance_to_go + 1);
00393 if (max_speed > (this->cur_speed - delta_v)) {
00394 st_max_speed = this->cur_speed - (delta_v / 10);
00395 }
00396
00397 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00398 max_speed = min(max_speed, st_max_speed);
00399 }
00400 }
00401 }
00402
00403 for (const Train *u = this; u != NULL; u = u->Next()) {
00404 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && u->track == TRACK_BIT_DEPOT) {
00405 max_speed = min(max_speed, 61);
00406 break;
00407 }
00408
00409
00410 if (u->track == TRACK_BIT_WORMHOLE && !(u->vehstatus & VS_HIDDEN)) {
00411 max_speed = min(max_speed, GetBridgeSpec(GetBridgeType(u->tile))->speed);
00412 }
00413 }
00414
00415 max_speed = min(max_speed, this->current_order.max_speed);
00416 return min(max_speed, this->gcache.cached_max_track_speed);
00417 }
00418
00420 void Train::UpdateAcceleration()
00421 {
00422 assert(this->IsFrontEngine() || this->IsFreeWagon());
00423
00424 uint power = this->gcache.cached_power;
00425 uint weight = this->gcache.cached_weight;
00426 assert(weight != 0);
00427 this->acceleration = Clamp(power / weight * 4, 1, 255);
00428 }
00429
00435 int Train::GetDisplayImageWidth(Point *offset) const
00436 {
00437 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00438 int vehicle_pitch = 0;
00439
00440 const Engine *e = this->GetEngine();
00441 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00442 reference_width = e->GetGRF()->traininfo_vehicle_width;
00443 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00444 }
00445
00446 if (offset != NULL) {
00447 offset->x = reference_width / 2;
00448 offset->y = vehicle_pitch;
00449 }
00450 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00451 }
00452
00453 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00454 {
00455 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00456 }
00457
00464 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00465 {
00466 uint8 spritenum = this->spritenum;
00467 SpriteID sprite;
00468
00469 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00470
00471 if (is_custom_sprite(spritenum)) {
00472 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00473 if (sprite != 0) return sprite;
00474
00475 spritenum = this->GetEngine()->original_image_index;
00476 }
00477
00478 sprite = GetDefaultTrainSprite(spritenum, direction);
00479
00480 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00481
00482 return sprite;
00483 }
00484
00485 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00486 {
00487 const Engine *e = Engine::Get(engine);
00488 Direction dir = rear_head ? DIR_E : DIR_W;
00489 uint8 spritenum = e->u.rail.image_index;
00490
00491 if (is_custom_sprite(spritenum)) {
00492 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00493 if (sprite != 0) {
00494 if (e->GetGRF() != NULL) {
00495 y += e->GetGRF()->traininfo_vehicle_pitch;
00496 }
00497 return sprite;
00498 }
00499
00500 spritenum = Engine::Get(engine)->original_image_index;
00501 }
00502
00503 if (rear_head) spritenum++;
00504
00505 return GetDefaultTrainSprite(spritenum, DIR_W);
00506 }
00507
00508 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00509 {
00510 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00511 int yf = y;
00512 int yr = y;
00513
00514 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00515 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00516 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00517 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00518
00519 preferred_x = Clamp(preferred_x, left - UnScaleByZoom(real_spritef->x_offs, ZOOM_LVL_GUI) + 14, right - UnScaleByZoom(real_spriter->width, ZOOM_LVL_GUI) - UnScaleByZoom(real_spriter->x_offs, ZOOM_LVL_GUI) - 15);
00520
00521 DrawSprite(spritef, pal, preferred_x - 14, yf);
00522 DrawSprite(spriter, pal, preferred_x + 15, yr);
00523 } else {
00524 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00525 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00526 preferred_x = Clamp(preferred_x, left - UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI), right - UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) - UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI));
00527 DrawSprite(sprite, pal, preferred_x, y);
00528 }
00529 }
00530
00540 void GetTrainSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
00541 {
00542 int y = 0;
00543
00544 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00545 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00546
00547 width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
00548 height = UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI);
00549 xoffs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
00550 yoffs = UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI);
00551
00552 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00553 sprite = GetRailIcon(engine, true, y, image_type);
00554 real_sprite = GetSprite(sprite, ST_NORMAL);
00555
00556
00557 width = TRAININFO_DEFAULT_VEHICLE_WIDTH + UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) + UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI) - xoffs;
00558 height = max<uint>(height, UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI));
00559 xoffs = xoffs - TRAININFO_DEFAULT_VEHICLE_WIDTH / 2;
00560 yoffs = min(yoffs, UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI));
00561 }
00562 }
00563
00572 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00573 {
00574 const RailVehicleInfo *rvi = &e->u.rail;
00575
00576
00577 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00578
00579 if (flags & DC_EXEC) {
00580 Train *v = new Train();
00581 *ret = v;
00582 v->spritenum = rvi->image_index;
00583
00584 v->engine_type = e->index;
00585 v->gcache.first_engine = INVALID_ENGINE;
00586
00587 DiagDirection dir = GetRailDepotDirection(tile);
00588
00589 v->direction = DiagDirToDir(dir);
00590 v->tile = tile;
00591
00592 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00593 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00594
00595 v->x_pos = x;
00596 v->y_pos = y;
00597 v->z_pos = GetSlopePixelZ(x, y);
00598 v->owner = _current_company;
00599 v->track = TRACK_BIT_DEPOT;
00600 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00601
00602 v->SetWagon();
00603
00604 v->SetFreeWagon();
00605 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00606
00607 v->cargo_type = e->GetDefaultCargoType();
00608 v->cargo_cap = rvi->capacity;
00609
00610 v->railtype = rvi->railtype;
00611
00612 v->build_year = _cur_year;
00613 v->cur_image = SPR_IMG_QUERY;
00614 v->random_bits = VehicleRandomBits();
00615
00616 v->group_id = DEFAULT_GROUP;
00617
00618 AddArticulatedParts(v);
00619
00620 _new_vehicle_id = v->index;
00621
00622 VehicleUpdatePosition(v);
00623 v->First()->ConsistChanged(false);
00624 UpdateTrainGroupID(v->First());
00625
00626 CheckConsistencyOfArticulatedVehicle(v);
00627
00628
00629 Train *w;
00630 FOR_ALL_TRAINS(w) {
00631 if (w->tile == tile &&
00632 w->IsFreeWagon() &&
00633 w->engine_type == e->index &&
00634 w->First() != v &&
00635 !(w->vehstatus & VS_CRASHED)) {
00636 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00637 break;
00638 }
00639 }
00640 }
00641
00642 return CommandCost();
00643 }
00644
00646 static void NormalizeTrainVehInDepot(const Train *u)
00647 {
00648 const Train *v;
00649 FOR_ALL_TRAINS(v) {
00650 if (v->IsFreeWagon() && v->tile == u->tile &&
00651 v->track == TRACK_BIT_DEPOT) {
00652 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00653 CMD_MOVE_RAIL_VEHICLE).Failed())
00654 break;
00655 }
00656 }
00657 }
00658
00659 static void AddRearEngineToMultiheadedTrain(Train *v)
00660 {
00661 Train *u = new Train();
00662 v->value >>= 1;
00663 u->value = v->value;
00664 u->direction = v->direction;
00665 u->owner = v->owner;
00666 u->tile = v->tile;
00667 u->x_pos = v->x_pos;
00668 u->y_pos = v->y_pos;
00669 u->z_pos = v->z_pos;
00670 u->track = TRACK_BIT_DEPOT;
00671 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00672 u->spritenum = v->spritenum + 1;
00673 u->cargo_type = v->cargo_type;
00674 u->cargo_subtype = v->cargo_subtype;
00675 u->cargo_cap = v->cargo_cap;
00676 u->railtype = v->railtype;
00677 u->engine_type = v->engine_type;
00678 u->build_year = v->build_year;
00679 u->cur_image = SPR_IMG_QUERY;
00680 u->random_bits = VehicleRandomBits();
00681 v->SetMultiheaded();
00682 u->SetMultiheaded();
00683 v->SetNext(u);
00684 VehicleUpdatePosition(u);
00685
00686
00687 v->other_multiheaded_part = u;
00688 u->other_multiheaded_part = v;
00689 }
00690
00700 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00701 {
00702 const RailVehicleInfo *rvi = &e->u.rail;
00703
00704 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00705
00706
00707
00708 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00709
00710 if (flags & DC_EXEC) {
00711 DiagDirection dir = GetRailDepotDirection(tile);
00712 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00713 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00714
00715 Train *v = new Train();
00716 *ret = v;
00717 v->direction = DiagDirToDir(dir);
00718 v->tile = tile;
00719 v->owner = _current_company;
00720 v->x_pos = x;
00721 v->y_pos = y;
00722 v->z_pos = GetSlopePixelZ(x, y);
00723 v->track = TRACK_BIT_DEPOT;
00724 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00725 v->spritenum = rvi->image_index;
00726 v->cargo_type = e->GetDefaultCargoType();
00727 v->cargo_cap = rvi->capacity;
00728 v->last_station_visited = INVALID_STATION;
00729
00730 v->engine_type = e->index;
00731 v->gcache.first_engine = INVALID_ENGINE;
00732
00733 v->reliability = e->reliability;
00734 v->reliability_spd_dec = e->reliability_spd_dec;
00735 v->max_age = e->GetLifeLengthInDays();
00736
00737 v->railtype = rvi->railtype;
00738 _new_vehicle_id = v->index;
00739
00740 v->SetServiceInterval(Company::Get(_current_company)->settings.vehicle.servint_trains);
00741 v->date_of_last_service = _date;
00742 v->build_year = _cur_year;
00743 v->cur_image = SPR_IMG_QUERY;
00744 v->random_bits = VehicleRandomBits();
00745
00746 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00747 v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);
00748
00749 v->group_id = DEFAULT_GROUP;
00750
00751 v->SetFrontEngine();
00752 v->SetEngine();
00753
00754 VehicleUpdatePosition(v);
00755
00756 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00757 AddRearEngineToMultiheadedTrain(v);
00758 } else {
00759 AddArticulatedParts(v);
00760 }
00761
00762 v->ConsistChanged(false);
00763 UpdateTrainGroupID(v);
00764
00765 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00766 NormalizeTrainVehInDepot(v);
00767 }
00768
00769 CheckConsistencyOfArticulatedVehicle(v);
00770 }
00771
00772 return CommandCost();
00773 }
00774
00775 static Train *FindGoodVehiclePos(const Train *src)
00776 {
00777 EngineID eng = src->engine_type;
00778 TileIndex tile = src->tile;
00779
00780 Train *dst;
00781 FOR_ALL_TRAINS(dst) {
00782 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00783
00784 Train *t = dst;
00785 while (t->engine_type == eng) {
00786 t = t->Next();
00787 if (t == NULL) return dst;
00788 }
00789 }
00790 }
00791
00792 return NULL;
00793 }
00794
00796 typedef SmallVector<Train *, 16> TrainList;
00797
00803 static void MakeTrainBackup(TrainList &list, Train *t)
00804 {
00805 for (; t != NULL; t = t->Next()) *list.Append() = t;
00806 }
00807
00812 static void RestoreTrainBackup(TrainList &list)
00813 {
00814
00815 if (list.Length() == 0) return;
00816
00817 Train *prev = NULL;
00818
00819 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00820 Train *t = *iter;
00821 if (prev != NULL) {
00822 prev->SetNext(t);
00823 } else if (t->Previous() != NULL) {
00824
00825 t->Previous()->SetNext(NULL);
00826 }
00827 prev = t;
00828 }
00829 }
00830
00836 static void RemoveFromConsist(Train *part, bool chain = false)
00837 {
00838 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00839
00840
00841
00842 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00843
00844
00845 tail->SetNext(NULL);
00846 }
00847
00853 static void InsertInConsist(Train *dst, Train *chain)
00854 {
00855
00856 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00857
00858 chain->Last()->SetNext(dst->Next());
00859 dst->SetNext(chain);
00860 }
00861
00867 static void NormaliseDualHeads(Train *t)
00868 {
00869 for (; t != NULL; t = t->GetNextVehicle()) {
00870 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00871
00872
00873 Train *u;
00874 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00875
00876 if (u == t->other_multiheaded_part) continue;
00877
00878
00879 RemoveFromConsist(t->other_multiheaded_part);
00880
00881 InsertInConsist(u, t->other_multiheaded_part);
00882 }
00883 }
00884
00889 static void NormaliseSubtypes(Train *chain)
00890 {
00891
00892 if (chain == NULL) return;
00893
00894
00895 assert(chain->Previous() == NULL);
00896
00897
00898 if (chain->IsWagon()) {
00899 chain->SetFreeWagon();
00900 } else {
00901 assert(chain->IsEngine());
00902 chain->SetFrontEngine();
00903 }
00904
00905
00906 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00907 t->ClearFreeWagon();
00908 t->ClearFrontEngine();
00909 }
00910 }
00911
00921 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00922 {
00923
00924
00925
00926 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00927 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00928 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00929 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00930 return CommandCost();
00931 }
00932
00933
00934
00935 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00936
00937 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00938 }
00939
00945 static CommandCost CheckTrainAttachment(Train *t)
00946 {
00947
00948 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00949
00950
00951
00952 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00953
00954 Train *head = t;
00955 Train *prev = t;
00956
00957
00958 t = t->Next();
00959 prev->SetNext(NULL);
00960
00961
00962 head->InvalidateNewGRFCache();
00963
00964 while (t != NULL) {
00965 allowed_len -= t->gcache.cached_veh_length;
00966
00967 Train *next = t->Next();
00968
00969
00970
00971 t->SetNext(NULL);
00972
00973
00974 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00975
00976 EngineID first_engine = t->gcache.first_engine;
00977 t->gcache.first_engine = INVALID_ENGINE;
00978
00979
00980
00981 t->InvalidateNewGRFCache();
00982
00983 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00984
00985
00986 t->gcache.first_engine = first_engine;
00987
00988
00989 t->InvalidateNewGRFCache();
00990 head->InvalidateNewGRFCache();
00991
00992 if (callback != CALLBACK_FAILED) {
00993
00994 StringID error = STR_NULL;
00995
00996 if (head->GetGRF()->grf_version < 8) {
00997 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00998 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00999 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
01000 } else {
01001 if (callback < 0x400) {
01002 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01003 } else {
01004 switch (callback) {
01005 case 0x400:
01006 case 0x401:
01007 break;
01008
01009 default:
01010 case 0x402:
01011 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01012 break;
01013 }
01014 }
01015 }
01016
01017 if (error != STR_NULL) return_cmd_error(error);
01018 }
01019 }
01020
01021
01022 prev->SetNext(t);
01023 prev = t;
01024 t = next;
01025 }
01026
01027 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01028 return CommandCost();
01029 }
01030
01041 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01042 {
01043
01044 CommandCost ret = CheckTrainAttachment(src);
01045 if (ret.Failed()) return ret;
01046 ret = CheckTrainAttachment(dst);
01047 if (ret.Failed()) return ret;
01048
01049
01050 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01051 }
01052
01061 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01062 {
01063
01064 if (*src_head == *dst_head) {
01065
01066
01067 *dst_head = NULL;
01068 } else if (*dst_head == NULL) {
01069
01070
01071 *dst_head = src;
01072 }
01073
01074 if (src == *src_head) {
01075
01076
01077
01078
01079
01080
01081 *src_head = move_chain ? NULL :
01082 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01083 }
01084
01085
01086
01087
01088 RemoveFromConsist(src, move_chain);
01089 if (*dst_head != src) InsertInConsist(dst, src);
01090
01091
01092
01093 NormaliseDualHeads(*src_head);
01094 NormaliseDualHeads(*dst_head);
01095 }
01096
01102 static void NormaliseTrainHead(Train *head)
01103 {
01104
01105 if (head == NULL) return;
01106
01107
01108 head->ConsistChanged(false);
01109 UpdateTrainGroupID(head);
01110
01111
01112 if (!head->IsFrontEngine()) return;
01113
01114
01115 InvalidateWindowData(WC_VEHICLE_REFIT, head->index, VIWD_CONSIST_CHANGED);
01116 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01117
01118
01119 if (head->unitnumber != 0) return;
01120 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01121 }
01122
01135 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01136 {
01137 VehicleID s = GB(p1, 0, 20);
01138 VehicleID d = GB(p2, 0, 20);
01139 bool move_chain = HasBit(p1, 20);
01140
01141 Train *src = Train::GetIfValid(s);
01142 if (src == NULL) return CMD_ERROR;
01143
01144 CommandCost ret = CheckOwnership(src->owner);
01145 if (ret.Failed()) return ret;
01146
01147
01148 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01149
01150
01151 Train *dst;
01152 if (d == INVALID_VEHICLE) {
01153 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01154 } else {
01155 dst = Train::GetIfValid(d);
01156 if (dst == NULL) return CMD_ERROR;
01157
01158 CommandCost ret = CheckOwnership(dst->owner);
01159 if (ret.Failed()) return ret;
01160
01161
01162 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01163 }
01164
01165
01166 src = src->GetFirstEnginePart();
01167 if (dst != NULL) {
01168 dst = dst->GetFirstEnginePart();
01169 }
01170
01171
01172 if (src == dst) return CommandCost();
01173
01174
01175 Train *src_head = src->First();
01176 Train *dst_head;
01177 if (dst != NULL) {
01178 dst_head = dst->First();
01179 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01180
01181 dst = dst->GetLastEnginePart();
01182 } else {
01183 dst_head = NULL;
01184 }
01185
01186 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01187
01188
01189 if (move_chain && src_head == dst_head) return CommandCost();
01190
01191
01192 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01193
01194
01195 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01196
01197
01198 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01199
01200
01201
01202 TrainList original_src;
01203 TrainList original_dst;
01204
01205 MakeTrainBackup(original_src, src_head);
01206 MakeTrainBackup(original_dst, dst_head);
01207
01208
01209
01210
01211 Train *original_src_head = src_head;
01212 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01213
01214
01215 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01216 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01217
01218
01219 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01220
01221 if ((flags & DC_AUTOREPLACE) == 0) {
01222
01223
01224
01225 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01226 if (ret.Failed()) {
01227
01228 RestoreTrainBackup(original_src);
01229 RestoreTrainBackup(original_dst);
01230 return ret;
01231 }
01232 }
01233
01234
01235 if (flags & DC_EXEC) {
01236
01237 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01238 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01239
01240
01241 NormaliseSubtypes(src_head);
01242 NormaliseSubtypes(dst_head);
01243
01244
01245
01246
01247
01248
01249
01250
01251
01252
01253
01254
01255
01256
01257
01258
01259
01260
01261
01262
01263
01264 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01265
01266 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01267 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01268 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01269 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01270 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01271 SetWindowDirty(WC_COMPANY, _current_company);
01272
01273
01274
01275 DeleteVehicleOrders(src);
01276 RemoveVehicleFromGroup(src);
01277 src->unitnumber = 0;
01278 }
01279
01280
01281
01282 if (original_src_head != src && dst_head == src) {
01283 SetTrainGroupID(src, DEFAULT_GROUP);
01284 SetWindowDirty(WC_COMPANY, _current_company);
01285 }
01286
01287
01288 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01289 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01290
01291
01292 NormaliseTrainHead(src_head);
01293 NormaliseTrainHead(dst_head);
01294
01295 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01296 CheckCargoCapacity(src_head);
01297 CheckCargoCapacity(dst_head);
01298 }
01299
01300
01301 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01302 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01303 } else {
01304
01305 RestoreTrainBackup(original_src);
01306 RestoreTrainBackup(original_dst);
01307 }
01308
01309 return CommandCost();
01310 }
01311
01323 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01324 {
01325
01326 Window *w = NULL;
01327
01328
01329 bool sell_chain = HasBit(data, 0);
01330
01331 Train *v = Train::From(t)->GetFirstEnginePart();
01332 Train *first = v->First();
01333
01334 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01335
01336
01337
01338 TrainList original;
01339 MakeTrainBackup(original, first);
01340
01341
01342 Train *new_head = first;
01343 Train *sell_head = NULL;
01344
01345
01346 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01347
01348
01349 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01350 if (ret.Failed()) {
01351
01352 RestoreTrainBackup(original);
01353 return ret;
01354 }
01355
01356 CommandCost cost(EXPENSES_NEW_VEHICLES);
01357 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01358
01359 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01360 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01361 }
01362
01363
01364 if (flags & DC_EXEC) {
01365
01366 NormaliseSubtypes(new_head);
01367
01368 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01369
01370
01371 new_head->orders.list = first->orders.list;
01372 new_head->AddToShared(first);
01373 DeleteVehicleOrders(first);
01374
01375
01376 new_head->CopyVehicleConfigAndStatistics(first);
01377 GroupStatistics::CountVehicle(new_head, 1);
01378
01379
01380 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01381 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01382 OrderBackup::Backup(v, user);
01383 }
01384
01385
01386 NormaliseTrainHead(new_head);
01387
01388
01389 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01390 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01391
01392
01393 delete sell_head;
01394 } else {
01395
01396 RestoreTrainBackup(original);
01397 }
01398
01399 return cost;
01400 }
01401
01402 void Train::UpdateDeltaXY(Direction direction)
01403 {
01404
01405 this->x_offs = -1;
01406 this->y_offs = -1;
01407 this->x_extent = 3;
01408 this->y_extent = 3;
01409 this->z_extent = 6;
01410 this->x_bb_offs = 0;
01411 this->y_bb_offs = 0;
01412
01413 if (!IsDiagonalDirection(direction)) {
01414 static const int _sign_table[] =
01415 {
01416
01417 -1, -1,
01418 -1, 1,
01419 1, 1,
01420 1, -1,
01421 };
01422
01423 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01424
01425
01426 this->x_offs -= half_shorten * _sign_table[direction];
01427 this->y_offs -= half_shorten * _sign_table[direction + 1];
01428 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01429 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01430 } else {
01431 switch (direction) {
01432
01433
01434 case DIR_NE:
01435 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01436 this->x_extent = this->gcache.cached_veh_length - 1;
01437 this->x_bb_offs = -1;
01438 break;
01439
01440 case DIR_NW:
01441 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01442 this->y_extent = this->gcache.cached_veh_length - 1;
01443 this->y_bb_offs = -1;
01444 break;
01445
01446
01447
01448 case DIR_SW:
01449 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01450 this->x_extent = VEHICLE_LENGTH - 1;
01451 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01452 break;
01453
01454 case DIR_SE:
01455 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01456 this->y_extent = VEHICLE_LENGTH - 1;
01457 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01458 break;
01459
01460 default:
01461 NOT_REACHED();
01462 }
01463 }
01464 }
01465
01470 static void MarkTrainAsStuck(Train *v)
01471 {
01472 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01473
01474 SetBit(v->flags, VRF_TRAIN_STUCK);
01475
01476 v->wait_counter = 0;
01477
01478
01479 v->cur_speed = 0;
01480 v->subspeed = 0;
01481 v->SetLastSpeed();
01482
01483 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01484 }
01485 }
01486
01494 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01495 {
01496 uint16 flag1 = *swap_flag1;
01497 uint16 flag2 = *swap_flag2;
01498
01499
01500 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01501 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01502 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01503 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01504
01505
01506 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01507 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01508 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01509 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01510 }
01511 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01512 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01513 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01514 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01515 }
01516 }
01517
01522 static void UpdateStatusAfterSwap(Train *v)
01523 {
01524
01525 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01526
01527
01528 if (v->track != TRACK_BIT_WORMHOLE) {
01529 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01530 } else {
01531
01532
01533
01534
01535 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01536 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01537 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01538 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01539
01540
01541
01542 VehicleUpdatePosition(v);
01543 v->UpdateInclination(true, true);
01544 return;
01545 }
01546 }
01547 }
01548
01549 VehicleUpdatePosition(v);
01550 v->UpdateViewport(true, true);
01551 }
01552
01559 void ReverseTrainSwapVeh(Train *v, int l, int r)
01560 {
01561 Train *a, *b;
01562
01563
01564 for (a = v; l != 0; l--) a = a->Next();
01565 for (b = v; r != 0; r--) b = b->Next();
01566
01567 if (a != b) {
01568
01569 {
01570 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01571 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01572 a->vehstatus = tmp;
01573 }
01574
01575 Swap(a->track, b->track);
01576 Swap(a->direction, b->direction);
01577 Swap(a->x_pos, b->x_pos);
01578 Swap(a->y_pos, b->y_pos);
01579 Swap(a->tile, b->tile);
01580 Swap(a->z_pos, b->z_pos);
01581
01582 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01583
01584 UpdateStatusAfterSwap(a);
01585 UpdateStatusAfterSwap(b);
01586 } else {
01587
01588
01589
01590 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01591 UpdateStatusAfterSwap(a);
01592 }
01593 }
01594
01595
01601 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01602 {
01603 return (v->type == VEH_TRAIN) ? v : NULL;
01604 }
01605
01606
01613 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01614 {
01615 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01616
01617 Train *t = Train::From(v);
01618 if (!t->IsFrontEngine()) return NULL;
01619
01620 TileIndex tile = *(TileIndex *)data;
01621
01622 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01623
01624 return t;
01625 }
01626
01627
01634 static bool TrainApproachingCrossing(TileIndex tile)
01635 {
01636 assert(IsLevelCrossingTile(tile));
01637
01638 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01639 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01640
01641 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01642
01643 dir = ReverseDiagDir(dir);
01644 tile_from = tile + TileOffsByDiagDir(dir);
01645
01646 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01647 }
01648
01649
01656 void UpdateLevelCrossing(TileIndex tile, bool sound)
01657 {
01658 assert(IsLevelCrossingTile(tile));
01659
01660
01661 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01662
01663 if (new_state != IsCrossingBarred(tile)) {
01664 if (new_state && sound) {
01665 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01666 }
01667 SetCrossingBarred(tile, new_state);
01668 MarkTileDirtyByTile(tile);
01669 }
01670 }
01671
01672
01678 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01679 {
01680 if (!IsCrossingBarred(tile)) {
01681 BarCrossing(tile);
01682 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01683 MarkTileDirtyByTile(tile);
01684 }
01685 }
01686
01687
01693 static void AdvanceWagonsBeforeSwap(Train *v)
01694 {
01695 Train *base = v;
01696 Train *first = base;
01697 Train *last = v->Last();
01698 uint length = CountVehiclesInChain(v);
01699
01700 while (length > 2) {
01701 last = last->Previous();
01702 first = first->Next();
01703
01704 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01705
01706
01707
01708 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01709
01710 base = first;
01711 length -= 2;
01712 }
01713 }
01714
01715
01721 static void AdvanceWagonsAfterSwap(Train *v)
01722 {
01723
01724 Train *dep = v;
01725 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01726 dep = dep->Next();
01727 }
01728
01729 Train *leave = dep->Next();
01730
01731 if (leave != NULL) {
01732
01733 int d = TicksToLeaveDepot(dep);
01734
01735 if (d <= 0) {
01736 leave->vehstatus &= ~VS_HIDDEN;
01737 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01738 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01739 }
01740 } else {
01741 dep = NULL;
01742 }
01743
01744 Train *base = v;
01745 Train *first = base;
01746 Train *last = v->Last();
01747 uint length = CountVehiclesInChain(v);
01748
01749
01750
01751 bool nomove = (dep == NULL);
01752
01753 while (length > 2) {
01754
01755
01756 if (base == dep) break;
01757
01758
01759 if (last == dep) nomove = true;
01760
01761 last = last->Previous();
01762 first = first->Next();
01763
01764 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01765
01766
01767 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01768
01769 base = first;
01770 length -= 2;
01771 }
01772 }
01773
01778 void ReverseTrainDirection(Train *v)
01779 {
01780 if (IsRailDepotTile(v->tile)) {
01781 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01782 }
01783
01784
01785 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01786
01787
01788 TileIndex crossing = TrainApproachingCrossingTile(v);
01789
01790
01791 int r = CountVehiclesInChain(v) - 1;
01792
01793 AdvanceWagonsBeforeSwap(v);
01794
01795
01796 int l = 0;
01797 do {
01798 ReverseTrainSwapVeh(v, l++, r--);
01799 } while (l <= r);
01800
01801 AdvanceWagonsAfterSwap(v);
01802
01803 if (IsRailDepotTile(v->tile)) {
01804 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01805 }
01806
01807 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01808
01809 ClrBit(v->flags, VRF_REVERSING);
01810
01811
01812 v->ConsistChanged(true);
01813
01814
01815 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01816
01817
01818 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01819
01820
01821 crossing = TrainApproachingCrossingTile(v);
01822 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01823
01824
01825 if (v->track == TRACK_BIT_DEPOT) {
01826
01827 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01828 ClrBit(v->flags, VRF_TRAIN_STUCK);
01829 return;
01830 }
01831
01832
01833
01834 DiagDirection dir = TrainExitDir(v->direction, v->track);
01835 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01836
01837 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01838
01839
01840 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01841 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01842 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01843
01844
01845 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01846
01847 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01848 if (TryPathReserve(v, false, first_tile_okay)) {
01849
01850 CheckNextTrainTile(v);
01851 } else if (v->current_order.GetType() != OT_LOADING) {
01852
01853 MarkTrainAsStuck(v);
01854 }
01855 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01856
01857 ClrBit(v->flags, VRF_TRAIN_STUCK);
01858 v->wait_counter = 0;
01859 }
01860 }
01861
01871 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01872 {
01873 Train *v = Train::GetIfValid(p1);
01874 if (v == NULL) return CMD_ERROR;
01875
01876 CommandCost ret = CheckOwnership(v->owner);
01877 if (ret.Failed()) return ret;
01878
01879 if (p2 != 0) {
01880
01881
01882 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01883 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01884 }
01885 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01886
01887 Train *front = v->First();
01888
01889 if (!front->IsStoppedInDepot()) {
01890 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01891 }
01892
01893 if (flags & DC_EXEC) {
01894 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01895
01896 front->ConsistChanged(false);
01897 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01898 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01899 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01900 SetWindowClassesDirty(WC_TRAINS_LIST);
01901 }
01902 } else {
01903
01904 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01905
01906 if (flags & DC_EXEC) {
01907
01908 if (v->current_order.IsType(OT_LOADING)) {
01909 const Vehicle *last = v;
01910 while (last->Next() != NULL) last = last->Next();
01911
01912
01913 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01914 v->LeaveStation();
01915 }
01916 }
01917
01918
01919 v->force_proceed = TFP_NONE;
01920 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01921
01922 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01923 ToggleBit(v->flags, VRF_REVERSING);
01924 } else {
01925 v->cur_speed = 0;
01926 v->SetLastSpeed();
01927 HideFillingPercent(&v->fill_percent_te_id);
01928 ReverseTrainDirection(v);
01929 }
01930 }
01931 }
01932 return CommandCost();
01933 }
01934
01944 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01945 {
01946 Train *t = Train::GetIfValid(p1);
01947 if (t == NULL) return CMD_ERROR;
01948
01949 if (!t->IsPrimaryVehicle()) return CMD_ERROR;
01950
01951 CommandCost ret = CheckOwnership(t->owner);
01952 if (ret.Failed()) return ret;
01953
01954
01955 if (flags & DC_EXEC) {
01956
01957
01958
01959
01960
01961 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsChainInDepot() ? TFP_STUCK : TFP_SIGNAL;
01962 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01963 }
01964
01965 return CommandCost();
01966 }
01967
01975 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01976 {
01977 assert(!(v->vehstatus & VS_CRASHED));
01978
01979 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01980
01981 PBSTileInfo origin = FollowTrainReservation(v);
01982 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01983
01984 switch (_settings_game.pf.pathfinder_for_trains) {
01985 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01986 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01987
01988 default: NOT_REACHED();
01989 }
01990 }
01991
01999 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02000 {
02001 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02002 if (tfdd.best_length == UINT_MAX) return false;
02003
02004 if (location != NULL) *location = tfdd.tile;
02005 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02006 if (reverse != NULL) *reverse = tfdd.reverse;
02007
02008 return true;
02009 }
02010
02012 void Train::PlayLeaveStationSound() const
02013 {
02014 static const SoundFx sfx[] = {
02015 SND_04_TRAIN,
02016 SND_0A_TRAIN_HORN,
02017 SND_0A_TRAIN_HORN,
02018 SND_47_MAGLEV_2,
02019 SND_41_MAGLEV
02020 };
02021
02022 if (PlayVehicleSound(this, VSE_START)) return;
02023
02024 EngineID engtype = this->engine_type;
02025 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02026 }
02027
02032 static void CheckNextTrainTile(Train *v)
02033 {
02034
02035 if (_settings_game.pf.path_backoff_interval == 255) return;
02036
02037
02038 if (v->track == TRACK_BIT_DEPOT) return;
02039
02040 switch (v->current_order.GetType()) {
02041
02042 case OT_GOTO_DEPOT:
02043 if (v->tile == v->dest_tile) return;
02044 break;
02045
02046 case OT_GOTO_WAYPOINT:
02047
02048 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02049 break;
02050
02051 case OT_NOTHING:
02052 case OT_LEAVESTATION:
02053 case OT_LOADING:
02054
02055 if (v->GetNumOrders() > 0) return;
02056 break;
02057
02058 default:
02059 break;
02060 }
02061
02062 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02063
02064 Trackdir td = v->GetVehicleTrackdir();
02065
02066
02067 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02068 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02069 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02070
02071 CFollowTrackRail ft(v);
02072 if (!ft.Follow(v->tile, td)) return;
02073
02074 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02075
02076 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02077 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02078
02079 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02080 if (_settings_game.pf.forbid_90_deg) {
02081 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02082 }
02083 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02084 }
02085 }
02086 }
02087 }
02088
02094 static bool CheckTrainStayInDepot(Train *v)
02095 {
02096
02097 for (const Train *u = v; u != NULL; u = u->Next()) {
02098 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02099 }
02100
02101
02102 if (v->gcache.cached_power == 0) {
02103 v->vehstatus |= VS_STOPPED;
02104 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02105 return true;
02106 }
02107
02108 SigSegState seg_state;
02109
02110 if (v->force_proceed == TFP_NONE) {
02111
02112 if (++v->wait_counter < 37) {
02113 SetWindowClassesDirty(WC_TRAINS_LIST);
02114 return true;
02115 }
02116
02117 v->wait_counter = 0;
02118
02119 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02120 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02121
02122 SetWindowClassesDirty(WC_TRAINS_LIST);
02123 return true;
02124 }
02125 } else {
02126 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02127 }
02128
02129
02130 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02131
02132 if (HasDepotReservation(v->tile)) return true;
02133 SetDepotReservation(v->tile, true);
02134 VehicleEnterDepot(v);
02135 return true;
02136 }
02137
02138
02139 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02140
02141 SetWindowClassesDirty(WC_TRAINS_LIST);
02142 MarkTrainAsStuck(v);
02143 return true;
02144 }
02145
02146 SetDepotReservation(v->tile, true);
02147 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02148
02149 VehicleServiceInDepot(v);
02150 SetWindowClassesDirty(WC_TRAINS_LIST);
02151 v->PlayLeaveStationSound();
02152
02153 v->track = TRACK_BIT_X;
02154 if (v->direction & 2) v->track = TRACK_BIT_Y;
02155
02156 v->vehstatus &= ~VS_HIDDEN;
02157 v->cur_speed = 0;
02158
02159 v->UpdateViewport(true, true);
02160 VehicleUpdatePosition(v);
02161 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02162 v->UpdateAcceleration();
02163 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02164
02165 return false;
02166 }
02167
02174 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02175 {
02176 DiagDirection dir = TrackdirToExitdir(track_dir);
02177
02178 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02179
02180 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02181 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02182
02183 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02184
02185 SetTunnelBridgeReservation(tile, false);
02186 SetTunnelBridgeReservation(end, false);
02187
02188 if (_settings_client.gui.show_track_reservation) {
02189 MarkTileDirtyByTile(tile);
02190 MarkTileDirtyByTile(end);
02191 }
02192 }
02193 }
02194 } else if (IsRailStationTile(tile)) {
02195 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02196
02197
02198 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02199 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02200 }
02201 } else {
02202
02203 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02204 }
02205 }
02206
02213 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02214 {
02215 assert(v->IsFrontEngine());
02216
02217 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02218 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02219 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02220 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02221
02222
02223 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02224 if (v->track == TRACK_BIT_DEPOT) {
02225
02226 for (const Train *u = v; u != NULL; u = u->Next()) {
02227 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02228 }
02229 }
02230
02231 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02232
02233 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02234 while (ft.Follow(tile, td)) {
02235 tile = ft.m_new_tile;
02236 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02237 td = RemoveFirstTrackdir(&bits);
02238 assert(bits == TRACKDIR_BIT_NONE);
02239
02240 if (!IsValidTrackdir(td)) break;
02241
02242 if (IsTileType(tile, MP_RAILWAY)) {
02243 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02244
02245 UnreserveRailTrack(tile, TrackdirToTrack(td));
02246 break;
02247 }
02248 if (HasPbsSignalOnTrackdir(tile, td)) {
02249 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02250
02251 break;
02252 } else {
02253
02254 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02255 MarkTileDirtyByTile(tile);
02256 }
02257 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02258 break;
02259 }
02260 }
02261
02262
02263 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);
02264
02265 free_tile = true;
02266 }
02267 }
02268
02269 static const byte _initial_tile_subcoord[6][4][3] = {
02270 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02271 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02272 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02273 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02274 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02275 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02276 };
02277
02290 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02291 {
02292 switch (_settings_game.pf.pathfinder_for_trains) {
02293 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02294 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02295
02296 default: NOT_REACHED();
02297 }
02298 }
02299
02305 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02306 {
02307 PBSTileInfo origin = FollowTrainReservation(v);
02308
02309 CFollowTrackRail ft(v);
02310
02311 TileIndex tile = origin.tile;
02312 Trackdir cur_td = origin.trackdir;
02313 while (ft.Follow(tile, cur_td)) {
02314 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02315
02316 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02317 }
02318
02319 if (_settings_game.pf.forbid_90_deg) {
02320 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02321 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02322 }
02323
02324
02325 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02326 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02327
02328
02329
02330
02331
02332
02333 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02334
02335
02336
02337 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02338
02339
02340 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02341 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02342 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02343 }
02344
02345 tile = ft.m_new_tile;
02346 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02347
02348 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02349 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02350 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02351
02352 return PBSTileInfo(tile, cur_td, true);
02353 }
02354
02355 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02356 }
02357
02358 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02359
02360 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02361 }
02362
02363
02364 tile = origin.tile;
02365 cur_td = origin.trackdir;
02366 TileIndex stopped = ft.m_old_tile;
02367 Trackdir stopped_td = ft.m_old_td;
02368 while (tile != stopped || cur_td != stopped_td) {
02369 if (!ft.Follow(tile, cur_td)) break;
02370
02371 if (_settings_game.pf.forbid_90_deg) {
02372 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02373 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02374 }
02375 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02376
02377 tile = ft.m_new_tile;
02378 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02379
02380 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02381 }
02382
02383
02384 return PBSTileInfo();
02385 }
02386
02397 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02398 {
02399 switch (_settings_game.pf.pathfinder_for_trains) {
02400 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02401 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02402
02403 default: NOT_REACHED();
02404 }
02405 }
02406
02408 class VehicleOrderSaver {
02409 private:
02410 Train *v;
02411 Order old_order;
02412 TileIndex old_dest_tile;
02413 StationID old_last_station_visited;
02414 VehicleOrderID index;
02415 bool suppress_implicit_orders;
02416
02417 public:
02418 VehicleOrderSaver(Train *_v) :
02419 v(_v),
02420 old_order(_v->current_order),
02421 old_dest_tile(_v->dest_tile),
02422 old_last_station_visited(_v->last_station_visited),
02423 index(_v->cur_real_order_index),
02424 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02425 {
02426 }
02427
02428 ~VehicleOrderSaver()
02429 {
02430 this->v->current_order = this->old_order;
02431 this->v->dest_tile = this->old_dest_tile;
02432 this->v->last_station_visited = this->old_last_station_visited;
02433 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02434 }
02435
02441 bool SwitchToNextOrder(bool skip_first)
02442 {
02443 if (this->v->GetNumOrders() == 0) return false;
02444
02445 if (skip_first) ++this->index;
02446
02447 int depth = 0;
02448
02449 do {
02450
02451 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02452
02453 Order *order = this->v->GetOrder(this->index);
02454 assert(order != NULL);
02455
02456 switch (order->GetType()) {
02457 case OT_GOTO_DEPOT:
02458
02459 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02460 case OT_GOTO_STATION:
02461 case OT_GOTO_WAYPOINT:
02462 this->v->current_order = *order;
02463 return UpdateOrderDest(this->v, order, 0, true);
02464 case OT_CONDITIONAL: {
02465 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02466 if (next != INVALID_VEH_ORDER_ID) {
02467 depth++;
02468 this->index = next;
02469
02470 continue;
02471 }
02472 break;
02473 }
02474 default:
02475 break;
02476 }
02477
02478
02479 ++this->index;
02480 depth++;
02481 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02482
02483 return false;
02484 }
02485 };
02486
02487
02488 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02489 {
02490 Track best_track = INVALID_TRACK;
02491 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02492 bool changed_signal = false;
02493
02494 assert((tracks & ~TRACK_BIT_MASK) == 0);
02495
02496 if (got_reservation != NULL) *got_reservation = false;
02497
02498
02499 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02500
02501 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02502
02503
02504 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02505 Track track = FindFirstTrack(tracks);
02506
02507 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02508 do_track_reservation = true;
02509 changed_signal = true;
02510 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02511 } else if (!do_track_reservation) {
02512 return track;
02513 }
02514 best_track = track;
02515 }
02516
02517 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02518 DiagDirection dest_enterdir = enterdir;
02519 if (do_track_reservation) {
02520 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02521 if (res_dest.tile == INVALID_TILE) {
02522
02523 if (mark_stuck) MarkTrainAsStuck(v);
02524 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02525 return FindFirstTrack(tracks);
02526 }
02527 if (res_dest.okay) {
02528
02529 if (got_reservation != NULL) *got_reservation = true;
02530 if (changed_signal) MarkTileDirtyByTile(tile);
02531 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02532 return best_track;
02533 }
02534
02535
02536
02537
02538 CheckIfTrainNeedsService(v);
02539 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02540 }
02541
02542
02543 VehicleOrderSaver orders(v);
02544
02545
02546
02547
02548
02549
02550
02551 if (v->current_order.IsType(OT_LEAVESTATION)) {
02552 orders.SwitchToNextOrder(false);
02553 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02554 v->current_order.IsType(OT_GOTO_STATION) ?
02555 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02556 v->tile == v->dest_tile))) {
02557 orders.SwitchToNextOrder(true);
02558 }
02559
02560 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02561
02562 bool path_found = true;
02563 TileIndex new_tile = res_dest.tile;
02564
02565 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02566 if (new_tile == tile) best_track = next_track;
02567 v->HandlePathfindingResult(path_found);
02568 }
02569
02570
02571 if (!do_track_reservation) return best_track;
02572
02573
02574 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02575 if (mark_stuck) MarkTrainAsStuck(v);
02576 FreeTrainTrackReservation(v);
02577 return best_track;
02578 }
02579
02580
02581 if (res_dest.tile == INVALID_TILE) {
02582
02583 PBSTileInfo origin = FollowTrainReservation(v);
02584 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02585 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02586 best_track = FindFirstTrack(res);
02587 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02588 if (got_reservation != NULL) *got_reservation = true;
02589 if (changed_signal) MarkTileDirtyByTile(tile);
02590 } else {
02591 FreeTrainTrackReservation(v);
02592 if (mark_stuck) MarkTrainAsStuck(v);
02593 }
02594 return best_track;
02595 }
02596
02597 if (got_reservation != NULL) *got_reservation = true;
02598
02599
02600 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02601
02602 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02603 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02604 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02605 if (_settings_game.pf.forbid_90_deg) {
02606 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02607 }
02608
02609
02610 if (orders.SwitchToNextOrder(true)) {
02611 PBSTileInfo cur_dest;
02612 bool path_found;
02613 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02614 if (cur_dest.tile != INVALID_TILE) {
02615 res_dest = cur_dest;
02616 if (res_dest.okay) continue;
02617
02618 FreeTrainTrackReservation(v);
02619 if (mark_stuck) MarkTrainAsStuck(v);
02620 if (got_reservation != NULL) *got_reservation = false;
02621 changed_signal = false;
02622 break;
02623 }
02624 }
02625
02626 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02627 FreeTrainTrackReservation(v);
02628 if (mark_stuck) MarkTrainAsStuck(v);
02629 if (got_reservation != NULL) *got_reservation = false;
02630 changed_signal = false;
02631 }
02632 break;
02633 }
02634
02635 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02636
02637 if (changed_signal) MarkTileDirtyByTile(tile);
02638
02639 return best_track;
02640 }
02641
02650 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02651 {
02652 assert(v->IsFrontEngine());
02653
02654
02655
02656
02657 if (v->track == TRACK_BIT_DEPOT) {
02658 if (HasDepotReservation(v->tile)) {
02659 if (mark_as_stuck) MarkTrainAsStuck(v);
02660 return false;
02661 } else {
02662
02663 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02664 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02665 }
02666 }
02667
02668 Vehicle *other_train = NULL;
02669 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02670
02671
02672
02673
02674
02675 if (other_train != NULL && other_train->index != v->index) {
02676 if (mark_as_stuck) MarkTrainAsStuck(v);
02677 return false;
02678 }
02679
02680 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02681
02682 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02683 ClrBit(v->flags, VRF_TRAIN_STUCK);
02684 return true;
02685 }
02686
02687
02688 if (v->track == TRACK_BIT_DEPOT) {
02689 SetDepotReservation(v->tile, true);
02690 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02691 }
02692
02693 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02694 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02695 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02696
02697 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02698
02699 bool res_made = false;
02700 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02701
02702 if (!res_made) {
02703
02704 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02705 return false;
02706 }
02707
02708 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02709 v->wait_counter = 0;
02710 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02711 }
02712 ClrBit(v->flags, VRF_TRAIN_STUCK);
02713 return true;
02714 }
02715
02716
02717 static bool CheckReverseTrain(const Train *v)
02718 {
02719 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02720 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02721 !(v->direction & 1)) {
02722 return false;
02723 }
02724
02725 assert(v->track != TRACK_BIT_NONE);
02726
02727 switch (_settings_game.pf.pathfinder_for_trains) {
02728 case VPF_NPF: return NPFTrainCheckReverse(v);
02729 case VPF_YAPF: return YapfTrainCheckReverse(v);
02730
02731 default: NOT_REACHED();
02732 }
02733 }
02734
02740 TileIndex Train::GetOrderStationLocation(StationID station)
02741 {
02742 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02743
02744 const Station *st = Station::Get(station);
02745 if (!(st->facilities & FACIL_TRAIN)) {
02746
02747 this->IncrementRealOrderIndex();
02748 return 0;
02749 }
02750
02751 return st->xy;
02752 }
02753
02755 void Train::MarkDirty()
02756 {
02757 Train *v = this;
02758 do {
02759 v->UpdateViewport(false, false);
02760 } while ((v = v->Next()) != NULL);
02761
02762
02763 this->CargoChanged();
02764 this->UpdateAcceleration();
02765 }
02766
02774 int Train::UpdateSpeed()
02775 {
02776 switch (_settings_game.vehicle.train_acceleration_model) {
02777 default: NOT_REACHED();
02778 case AM_ORIGINAL:
02779 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->GetCurrentMaxSpeed());
02780
02781 case AM_REALISTIC:
02782 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02783 }
02784 }
02785
02791 static void TrainEnterStation(Train *v, StationID station)
02792 {
02793 v->last_station_visited = station;
02794
02795
02796 Station *st = Station::Get(station);
02797 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02798 st->had_vehicle_of_type |= HVOT_TRAIN;
02799 SetDParam(0, st->index);
02800 AddVehicleNewsItem(
02801 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02802 v->owner == _local_company ? NT_ARRIVAL_COMPANY : NT_ARRIVAL_OTHER,
02803 v->index,
02804 st->index
02805 );
02806 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02807 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02808 }
02809
02810 v->force_proceed = TFP_NONE;
02811 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02812
02813 v->BeginLoading();
02814
02815 TriggerStationRandomisation(st, v->tile, SRT_TRAIN_ARRIVES);
02816 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02817 }
02818
02819
02820 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02821 {
02822 return IsTileOwner(tile, v->owner) &&
02823 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02824 }
02825
02827 struct AccelerationSlowdownParams {
02828 byte small_turn;
02829 byte large_turn;
02830 byte z_up;
02831 byte z_down;
02832 };
02833
02835 static const AccelerationSlowdownParams _accel_slowdown[] = {
02836
02837 {256 / 4, 256 / 2, 256 / 4, 2},
02838 {256 / 4, 256 / 2, 256 / 4, 2},
02839 {0, 256 / 2, 256 / 4, 2},
02840 };
02841
02847 static inline void AffectSpeedByZChange(Train *v, int old_z)
02848 {
02849 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02850
02851 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02852
02853 if (old_z < v->z_pos) {
02854 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02855 } else {
02856 uint16 spd = v->cur_speed + asp->z_down;
02857 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02858 }
02859 }
02860
02861 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02862 {
02863 if (IsTileType(tile, MP_RAILWAY) &&
02864 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02865 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02866 Trackdir trackdir = FindFirstTrackdir(tracks);
02867 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02868
02869 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02870 }
02871 }
02872 return false;
02873 }
02874
02876 void Train::ReserveTrackUnderConsist() const
02877 {
02878 for (const Train *u = this; u != NULL; u = u->Next()) {
02879 switch (u->track) {
02880 case TRACK_BIT_WORMHOLE:
02881 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02882 break;
02883 case TRACK_BIT_DEPOT:
02884 break;
02885 default:
02886 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02887 break;
02888 }
02889 }
02890 }
02891
02898 uint Train::Crash(bool flooded)
02899 {
02900 uint pass = 0;
02901 if (this->IsFrontEngine()) {
02902 pass += 2;
02903
02904
02905
02906 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02907 for (const Train *v = this; v != NULL; v = v->Next()) {
02908 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02909 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02910
02911
02912 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02913 }
02914 }
02915
02916
02917
02918 TileIndex crossing = TrainApproachingCrossingTile(this);
02919 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02920
02921
02922 HideFillingPercent(&this->fill_percent_te_id);
02923 }
02924
02925 pass += this->GroundVehicleBase::Crash(flooded);
02926
02927 this->crash_anim_pos = flooded ? 4000 : 1;
02928 return pass;
02929 }
02930
02937 static uint TrainCrashed(Train *v)
02938 {
02939 uint num = 0;
02940
02941
02942 if (!(v->vehstatus & VS_CRASHED)) {
02943 num = v->Crash();
02944 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02945 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02946 }
02947
02948
02949
02950 v->ReserveTrackUnderConsist();
02951
02952 return num;
02953 }
02954
02956 struct TrainCollideChecker {
02957 Train *v;
02958 uint num;
02959 };
02960
02967 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02968 {
02969 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02970
02971
02972 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02973
02974
02975 if (v->owner != tcc->v->owner) return NULL;
02976
02977
02978 Train *coll = Train::From(v)->First();
02979
02980
02981 if (coll == tcc->v) return NULL;
02982
02983 int x_diff = v->x_pos - tcc->v->x_pos;
02984 int y_diff = v->y_pos - tcc->v->y_pos;
02985
02986
02987
02988
02989
02990 uint hash = (y_diff + 7) | (x_diff + 7);
02991 if (hash & ~15) return NULL;
02992
02993
02994 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02995 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
02996
02997
02998 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
02999
03000
03001 tcc->num += TrainCrashed(tcc->v);
03002 tcc->num += TrainCrashed(coll);
03003
03004 return NULL;
03005 }
03006
03014 static bool CheckTrainCollision(Train *v)
03015 {
03016
03017 if (v->track == TRACK_BIT_DEPOT) return false;
03018
03019 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03020
03021 TrainCollideChecker tcc;
03022 tcc.v = v;
03023 tcc.num = 0;
03024
03025
03026 if (v->track == TRACK_BIT_WORMHOLE) {
03027 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03028 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03029 } else {
03030 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03031 }
03032
03033
03034 if (tcc.num == 0) return false;
03035
03036 SetDParam(0, tcc.num);
03037 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH, NT_ACCIDENT, v->index);
03038
03039 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03040 if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03041 return true;
03042 }
03043
03044 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03045 {
03046 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03047
03048 Train *t = Train::From(v);
03049 DiagDirection exitdir = *(DiagDirection *)data;
03050
03051
03052 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03053
03054 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03055
03056 return t;
03057 }
03058
03066 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03067 {
03068 Train *first = v->First();
03069 Train *prev;
03070 bool direction_changed = false;
03071
03072
03073 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03074 DiagDirection enterdir = DIAGDIR_BEGIN;
03075 bool update_signals_crossing = false;
03076
03077 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03078 if (v->track != TRACK_BIT_WORMHOLE) {
03079
03080 if (gp.old_tile == gp.new_tile) {
03081
03082 if (v->track == TRACK_BIT_DEPOT) {
03083
03084 gp.x = v->x_pos;
03085 gp.y = v->y_pos;
03086 } else {
03087
03088
03089
03090 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03091
03092 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03093 if (HasBit(r, VETS_CANNOT_ENTER)) {
03094 goto invalid_rail;
03095 }
03096 if (HasBit(r, VETS_ENTERED_STATION)) {
03097
03098 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03099 }
03100 }
03101 } else {
03102
03103
03104
03105 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03106 assert(IsValidDiagDirection(enterdir));
03107
03108
03109
03110 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03111 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03112
03113 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03114 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03115
03116 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03117 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03118
03119
03120 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03121 }
03122
03123 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03124
03125
03126
03127 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03128
03129 TrackBits chosen_track;
03130 if (prev == NULL) {
03131
03132
03133 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03134 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03135
03136 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03137
03138
03139
03140
03141 Trackdir dir = FindFirstTrackdir(trackdirbits);
03142 if (HasSignalOnTrackdir(gp.new_tile, dir) ||
03143 (HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir)) &&
03144 GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS)) {
03145
03146
03147 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03148 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03149 }
03150 }
03151
03152
03153 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03154
03155 Trackdir i = FindFirstTrackdir(trackdirbits);
03156
03157
03158 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03159
03160 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03161 v->cur_speed = 0;
03162 v->subspeed = 0;
03163 v->progress = 255 - 100;
03164 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03165 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03166 v->cur_speed = 0;
03167 v->subspeed = 0;
03168 v->progress = 255 - 10;
03169 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03170 DiagDirection exitdir = TrackdirToExitdir(i);
03171 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03172
03173 exitdir = ReverseDiagDir(exitdir);
03174
03175
03176 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03177 }
03178 }
03179
03180
03181
03182
03183
03184 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03185 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03186 v->wait_counter = 0;
03187 return false;
03188 }
03189 goto reverse_train_direction;
03190 } else {
03191 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track), false);
03192 }
03193 } else {
03194
03195 if (prev->tile == gp.new_tile) {
03196
03197 if (prev->track == TRACK_BIT_WORMHOLE) {
03198
03199
03200 assert(IsTunnel(prev->tile));
03201 chosen_track = bits;
03202 } else {
03203 chosen_track = prev->track;
03204 }
03205 } else {
03206
03207
03208
03209
03210
03211
03212
03213 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03214 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03215 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03216 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03217 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03218 };
03219 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03220 assert(IsValidDiagDirection(exitdir));
03221 chosen_track = _connecting_track[enterdir][exitdir];
03222 }
03223 chosen_track &= bits;
03224 }
03225
03226
03227 assert(
03228 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03229 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03230 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03231
03232
03233 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03234 gp.x = (gp.x & ~0xF) | b[0];
03235 gp.y = (gp.y & ~0xF) | b[1];
03236 Direction chosen_dir = (Direction)b[2];
03237
03238
03239 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03240 if (HasBit(r, VETS_CANNOT_ENTER)) {
03241 goto invalid_rail;
03242 }
03243
03244 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03245 Track track = FindFirstTrack(chosen_track);
03246 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03247 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03248 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03249 MarkTileDirtyByTile(gp.new_tile);
03250 }
03251
03252
03253 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03254
03255 v->tile = gp.new_tile;
03256
03257 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03258 v->First()->ConsistChanged(true);
03259 }
03260
03261 v->track = chosen_track;
03262 assert(v->track);
03263 }
03264
03265
03266
03267 update_signals_crossing = true;
03268
03269 if (chosen_dir != v->direction) {
03270 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03271 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03272 DirDiff diff = DirDifference(v->direction, chosen_dir);
03273 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03274 }
03275 direction_changed = true;
03276 v->direction = chosen_dir;
03277 }
03278
03279 if (v->IsFrontEngine()) {
03280 v->wait_counter = 0;
03281
03282
03283 TileIndex crossing = TrainApproachingCrossingTile(v);
03284 if (crossing != INVALID_TILE && HasCrossingReservation(crossing) && _settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03285
03286
03287 CheckNextTrainTile(v);
03288 }
03289
03290 if (HasBit(r, VETS_ENTERED_STATION)) {
03291
03292 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03293 }
03294 }
03295 } else {
03296 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03297
03298 if (v->IsFrontEngine()) {
03299 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03300 CheckNextTrainTile(v);
03301 }
03302
03303
03304 if (gp.old_tile == gp.new_tile) {
03305 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03306 }
03307 } else {
03308 v->x_pos = gp.x;
03309 v->y_pos = gp.y;
03310 VehicleUpdatePosition(v);
03311 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03312 continue;
03313 }
03314 }
03315
03316
03317 v->UpdateDeltaXY(v->direction);
03318
03319 v->x_pos = gp.x;
03320 v->y_pos = gp.y;
03321 VehicleUpdatePosition(v);
03322
03323
03324 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03325
03326 if (prev == NULL) {
03327
03328 AffectSpeedByZChange(v, old_z);
03329 }
03330
03331 if (update_signals_crossing) {
03332 if (v->IsFrontEngine()) {
03333 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03334
03335
03336
03337
03338
03339
03340
03341
03342 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03343 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03344 !TryPathReserve(v)) {
03345 MarkTrainAsStuck(v);
03346 }
03347 }
03348 }
03349
03350
03351
03352 if (v->Next() == NULL) {
03353 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03354 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03355 }
03356 }
03357
03358
03359 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03360 }
03361
03362 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03363
03364 return true;
03365
03366 invalid_rail:
03367
03368 if (prev != NULL) error("Disconnecting train");
03369
03370 reverse_train_direction:
03371 if (reverse) {
03372 v->wait_counter = 0;
03373 v->cur_speed = 0;
03374 v->subspeed = 0;
03375 ReverseTrainDirection(v);
03376 }
03377
03378 return false;
03379 }
03380
03387 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03388 {
03389 TrackBits *trackbits = (TrackBits *)data;
03390
03391 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03392 TrackBits train_tbits = Train::From(v)->track;
03393 if (train_tbits == TRACK_BIT_WORMHOLE) {
03394
03395 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03396 } else if (train_tbits != TRACK_BIT_DEPOT) {
03397 *trackbits |= train_tbits;
03398 }
03399 }
03400
03401 return NULL;
03402 }
03403
03411 static void DeleteLastWagon(Train *v)
03412 {
03413 Train *first = v->First();
03414
03415
03416
03417
03418 Train *u = v;
03419 for (; v->Next() != NULL; v = v->Next()) u = v;
03420 u->SetNext(NULL);
03421
03422 if (first != v) {
03423
03424 first->ConsistChanged(false);
03425
03426
03427 if (first->track == TRACK_BIT_DEPOT) {
03428 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03429 }
03430 }
03431
03432
03433 TrackBits trackbits = v->track;
03434 TileIndex tile = v->tile;
03435 Owner owner = v->owner;
03436
03437 delete v;
03438 v = NULL;
03439
03440 if (trackbits == TRACK_BIT_WORMHOLE) {
03441
03442 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03443 }
03444
03445 Track track = TrackBitsToTrack(trackbits);
03446 if (HasReservedTracks(tile, trackbits)) {
03447 UnreserveRailTrack(tile, track);
03448
03449
03450 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03451 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03452
03453
03454 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03455 Track t;
03456 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03457 }
03458
03459
03460 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03461
03462
03463 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03464 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03465 } else {
03466 SetSignalsOnBothDir(tile, track, owner);
03467 }
03468 }
03469
03474 static void ChangeTrainDirRandomly(Train *v)
03475 {
03476 static const DirDiff delta[] = {
03477 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03478 };
03479
03480 do {
03481
03482 if (!(v->vehstatus & VS_HIDDEN)) {
03483 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03484 v->UpdateDeltaXY(v->direction);
03485 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03486
03487
03488
03489 if (v->track != TRACK_BIT_WORMHOLE) {
03490 VehicleUpdatePosition(v);
03491 v->UpdateInclination(false, false);
03492 }
03493 }
03494 } while ((v = v->Next()) != NULL);
03495 }
03496
03502 static bool HandleCrashedTrain(Train *v)
03503 {
03504 int state = ++v->crash_anim_pos;
03505
03506 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03507 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03508 }
03509
03510 uint32 r;
03511 if (state <= 200 && Chance16R(1, 7, r)) {
03512 int index = (r * 10 >> 16);
03513
03514 Vehicle *u = v;
03515 do {
03516 if (--index < 0) {
03517 r = Random();
03518
03519 CreateEffectVehicleRel(u,
03520 GB(r, 8, 3) + 2,
03521 GB(r, 16, 3) + 2,
03522 GB(r, 0, 3) + 5,
03523 EV_EXPLOSION_SMALL);
03524 break;
03525 }
03526 } while ((u = u->Next()) != NULL);
03527 }
03528
03529 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03530
03531 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03532 bool ret = v->Next() != NULL;
03533 DeleteLastWagon(v);
03534 return ret;
03535 }
03536
03537 return true;
03538 }
03539
03541 static const uint16 _breakdown_speeds[16] = {
03542 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03543 };
03544
03545
03554 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03555 {
03556
03557 uint x = v->x_pos & 0xF;
03558 uint y = v->y_pos & 0xF;
03559
03560
03561
03562 switch (v->direction) {
03563 case DIR_N : x = ~x + ~y + 25; break;
03564 case DIR_NW: x = y;
03565 case DIR_NE: x = ~x + 16; break;
03566 case DIR_E : x = ~x + y + 9; break;
03567 case DIR_SE: x = y; break;
03568 case DIR_S : x = x + y - 7; break;
03569 case DIR_W : x = ~y + x + 9; break;
03570 default: break;
03571 }
03572
03573
03574
03575
03576
03577
03578 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03579
03580 v->cur_speed = 0;
03581 if (reverse) ReverseTrainDirection(v);
03582 return false;
03583 }
03584
03585
03586 v->vehstatus |= VS_TRAIN_SLOWING;
03587 uint16 break_speed = _breakdown_speeds[x & 0xF];
03588 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03589
03590 return true;
03591 }
03592
03593
03599 static bool TrainCanLeaveTile(const Train *v)
03600 {
03601
03602 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03603
03604 TileIndex tile = v->tile;
03605
03606
03607 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03608 DiagDirection dir = GetTunnelBridgeDirection(tile);
03609 if (DiagDirToDir(dir) == v->direction) return false;
03610 }
03611
03612
03613 if (IsRailDepotTile(tile)) {
03614 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03615 if (DiagDirToDir(dir) == v->direction) return false;
03616 }
03617
03618 return true;
03619 }
03620
03621
03629 static TileIndex TrainApproachingCrossingTile(const Train *v)
03630 {
03631 assert(v->IsFrontEngine());
03632 assert(!(v->vehstatus & VS_CRASHED));
03633
03634 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03635
03636 DiagDirection dir = TrainExitDir(v->direction, v->track);
03637 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03638
03639
03640 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03641 !CheckCompatibleRail(v, tile)) {
03642 return INVALID_TILE;
03643 }
03644
03645 return tile;
03646 }
03647
03648
03656 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03657 {
03658
03659
03660 int t = v->breakdown_ctr;
03661 if (t > 1) {
03662 v->vehstatus |= VS_TRAIN_SLOWING;
03663
03664 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03665 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03666 } else {
03667 v->vehstatus &= ~VS_TRAIN_SLOWING;
03668 }
03669
03670 if (!TrainCanLeaveTile(v)) return true;
03671
03672
03673 DiagDirection dir = TrainExitDir(v->direction, v->track);
03674
03675 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03676
03677
03678 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03679 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03680
03681 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03682 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03683
03684
03685
03686
03687 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03688 if (_settings_game.pf.forbid_90_deg) {
03689 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03690 }
03691
03692
03693 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03694 return TrainApproachingLineEnd(v, false, reverse);
03695 }
03696
03697
03698 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03699
03700
03701 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03702
03703 return true;
03704 }
03705
03706
03707 static bool TrainLocoHandler(Train *v, bool mode)
03708 {
03709
03710 if (v->vehstatus & VS_CRASHED) {
03711 return mode ? true : HandleCrashedTrain(v);
03712 }
03713
03714 if (v->force_proceed != TFP_NONE) {
03715 ClrBit(v->flags, VRF_TRAIN_STUCK);
03716 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03717 }
03718
03719
03720 if (v->HandleBreakdown()) return true;
03721
03722 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03723 ReverseTrainDirection(v);
03724 }
03725
03726
03727 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03728
03729 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03730 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03731 v->wait_counter = 0;
03732 v->cur_speed = 0;
03733 v->subspeed = 0;
03734 ClrBit(v->flags, VRF_LEAVING_STATION);
03735 ReverseTrainDirection(v);
03736 return true;
03737 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03738
03739
03740
03741 DiagDirection dir = TrainExitDir(v->direction, v->track);
03742 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03743
03744 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03745 TryPathReserve(v, true, true);
03746 }
03747 ClrBit(v->flags, VRF_LEAVING_STATION);
03748 }
03749
03750 v->HandleLoading(mode);
03751
03752 if (v->current_order.IsType(OT_LOADING)) return true;
03753
03754 if (CheckTrainStayInDepot(v)) return true;
03755
03756 if (!mode) v->ShowVisualEffect();
03757
03758
03759 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03760 CheckNextTrainTile(v);
03761 }
03762
03763
03764 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03765 ++v->wait_counter;
03766
03767
03768 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03769
03770 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03771 if (!TryPathReserve(v)) {
03772
03773 if (turn_around) ReverseTrainDirection(v);
03774
03775 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03776
03777 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03778 SetDParam(0, v->index);
03779 AddVehicleAdviceNewsItem(STR_NEWS_TRAIN_IS_STUCK, v->index);
03780 }
03781 v->wait_counter = 0;
03782 }
03783
03784 if (v->force_proceed == TFP_NONE) return true;
03785 ClrBit(v->flags, VRF_TRAIN_STUCK);
03786 v->wait_counter = 0;
03787 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03788 }
03789 }
03790
03791 if (v->current_order.IsType(OT_LEAVESTATION)) {
03792 v->current_order.Free();
03793 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03794 return true;
03795 }
03796
03797 int j = v->UpdateSpeed();
03798
03799
03800 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03801
03802 v->force_proceed = TFP_NONE;
03803 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03804 }
03805
03806 int adv_spd = v->GetAdvanceDistance();
03807 if (j < adv_spd) {
03808
03809 if (v->cur_speed == 0) v->SetLastSpeed();
03810 } else {
03811 TrainCheckIfLineEnds(v);
03812
03813 for (;;) {
03814 j -= adv_spd;
03815 TrainController(v, NULL);
03816
03817 if (CheckTrainCollision(v)) break;
03818
03819 adv_spd = v->GetAdvanceDistance();
03820
03821
03822 if (j < adv_spd || v->cur_speed == 0) break;
03823
03824 OrderType order_type = v->current_order.GetType();
03825
03826 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03827 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03828 IsTileType(v->tile, MP_STATION) &&
03829 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03830 ProcessOrders(v);
03831 }
03832 }
03833 v->SetLastSpeed();
03834 }
03835
03836 for (Train *u = v; u != NULL; u = u->Next()) {
03837 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03838
03839 u->UpdateViewport(false, false);
03840 }
03841
03842 if (v->progress == 0) v->progress = j;
03843
03844 return true;
03845 }
03846
03851 Money Train::GetRunningCost() const
03852 {
03853 Money cost = 0;
03854 const Train *v = this;
03855
03856 do {
03857 const Engine *e = v->GetEngine();
03858 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03859
03860 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03861 if (cost_factor == 0) continue;
03862
03863
03864 if (v->IsMultiheaded()) cost_factor /= 2;
03865
03866 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03867 } while ((v = v->GetNextVehicle()) != NULL);
03868
03869 return cost;
03870 }
03871
03876 bool Train::Tick()
03877 {
03878 this->tick_counter++;
03879
03880 if (this->IsFrontEngine()) {
03881 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03882
03883 this->current_order_time++;
03884
03885 if (!TrainLocoHandler(this, false)) return false;
03886
03887 return TrainLocoHandler(this, true);
03888 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03889
03890 if (++this->crash_anim_pos >= 4400) {
03891 delete this;
03892 return false;
03893 }
03894 }
03895
03896 return true;
03897 }
03898
03903 static void CheckIfTrainNeedsService(Train *v)
03904 {
03905 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03906 if (v->IsChainInDepot()) {
03907 VehicleServiceInDepot(v);
03908 return;
03909 }
03910
03911 uint max_penalty;
03912 switch (_settings_game.pf.pathfinder_for_trains) {
03913 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03914 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03915 default: NOT_REACHED();
03916 }
03917
03918 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03919
03920 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03921 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03922
03923
03924
03925 v->current_order.MakeDummy();
03926 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03927 }
03928 return;
03929 }
03930
03931 DepotID depot = GetDepotIndex(tfdd.tile);
03932
03933 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03934 v->current_order.GetDestination() != depot &&
03935 !Chance16(3, 16)) {
03936 return;
03937 }
03938
03939 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03940 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03941 v->dest_tile = tfdd.tile;
03942 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03943 }
03944
03946 void Train::OnNewDay()
03947 {
03948 AgeVehicle(this);
03949
03950 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03951
03952 if (this->IsFrontEngine()) {
03953 CheckVehicleBreakdown(this);
03954
03955 CheckIfTrainNeedsService(this);
03956
03957 CheckOrders(this);
03958
03959
03960 if (this->current_order.IsType(OT_GOTO_STATION)) {
03961 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03962 if (tile != INVALID_TILE) this->dest_tile = tile;
03963 }
03964
03965 if (this->running_ticks != 0) {
03966
03967 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03968
03969 this->profit_this_year -= cost.GetCost();
03970 this->running_ticks = 0;
03971
03972 SubtractMoneyFromCompanyFract(this->owner, cost);
03973
03974 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03975 SetWindowClassesDirty(WC_TRAINS_LIST);
03976 }
03977 }
03978 }
03979
03984 Trackdir Train::GetVehicleTrackdir() const
03985 {
03986 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03987
03988 if (this->track == TRACK_BIT_DEPOT) {
03989
03990 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03991 }
03992
03993 if (this->track == TRACK_BIT_WORMHOLE) {
03994
03995 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03996 }
03997
03998 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
03999 }