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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 uint16 new_cap = e_u->DetermineCapacity(u);
00204 u->refit_cap = min(new_cap, u->refit_cap);
00205 u->cargo_cap = new_cap;
00206 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00207
00208
00209 uint16 veh_len = CALLBACK_FAILED;
00210 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00211
00212 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00213
00214 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00215 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00216 }
00217 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00218
00219 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00220 }
00221 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00222 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00223
00224
00225 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00226
00227
00228 if (!same_length) u->gcache.cached_veh_length = veh_len;
00229
00230 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00231 this->InvalidateNewGRFCache();
00232 u->InvalidateNewGRFCache();
00233 }
00234
00235
00236 this->vcache.cached_max_speed = max_speed;
00237 this->tcache.cached_tilt = train_can_tilt;
00238 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00239
00240
00241 this->CargoChanged();
00242
00243 if (this->IsFrontEngine()) {
00244 this->UpdateAcceleration();
00245 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00246 InvalidateWindowData(WC_VEHICLE_REFIT, this->index, VIWD_CONSIST_CHANGED);
00247 InvalidateWindowData(WC_VEHICLE_ORDERS, this->index, VIWD_CONSIST_CHANGED);
00248 }
00249 }
00250
00261 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00262 {
00263 const Station *st = Station::Get(station_id);
00264 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00265 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00266
00267
00268
00269 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00270 if (v->gcache.cached_total_length >= *station_length) {
00271
00272 osl = OSL_PLATFORM_FAR_END;
00273 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00274 osl = v->current_order.GetStopLocation();
00275 }
00276
00277
00278 int stop;
00279 switch (osl) {
00280 default: NOT_REACHED();
00281
00282 case OSL_PLATFORM_NEAR_END:
00283 stop = v->gcache.cached_total_length;
00284 break;
00285
00286 case OSL_PLATFORM_MIDDLE:
00287 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00288 break;
00289
00290 case OSL_PLATFORM_FAR_END:
00291 stop = *station_length;
00292 break;
00293 }
00294
00295
00296
00297 return stop - (v->gcache.cached_veh_length + 1) / 2;
00298 }
00299
00300
00305 int Train::GetCurveSpeedLimit() const
00306 {
00307 assert(this->First() == this);
00308
00309 static const int absolute_max_speed = UINT16_MAX;
00310 int max_speed = absolute_max_speed;
00311
00312 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00313
00314 int curvecount[2] = {0, 0};
00315
00316
00317 int numcurve = 0;
00318 int sum = 0;
00319 int pos = 0;
00320 int lastpos = -1;
00321 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00322 Direction this_dir = u->direction;
00323 Direction next_dir = u->Next()->direction;
00324
00325 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00326 if (dirdiff == DIRDIFF_SAME) continue;
00327
00328 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00329 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00330 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00331 if (lastpos != -1) {
00332 numcurve++;
00333 sum += pos - lastpos;
00334 if (pos - lastpos == 1 && max_speed > 88) {
00335 max_speed = 88;
00336 }
00337 }
00338 lastpos = pos;
00339 }
00340
00341
00342 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00343 max_speed = 61;
00344 }
00345 }
00346
00347 if (numcurve > 0 && max_speed > 88) {
00348 if (curvecount[0] == 1 && curvecount[1] == 1) {
00349 max_speed = absolute_max_speed;
00350 } else {
00351 sum /= numcurve;
00352 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00353 }
00354 }
00355
00356 if (max_speed != absolute_max_speed) {
00357
00358 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00359 max_speed += (max_speed / 2) * rti->curve_speed;
00360
00361 if (this->tcache.cached_tilt) {
00362
00363 max_speed += max_speed / 5;
00364 }
00365 }
00366
00367 return max_speed;
00368 }
00369
00374 int Train::GetCurrentMaxSpeed() const
00375 {
00376 int max_speed = _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL ?
00377 this->gcache.cached_max_track_speed :
00378 this->tcache.cached_max_curve_speed;
00379
00380 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && IsRailStationTile(this->tile)) {
00381 StationID sid = GetStationIndex(this->tile);
00382 if (this->current_order.ShouldStopAtStation(this, sid)) {
00383 int station_ahead;
00384 int station_length;
00385 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00386
00387
00388
00389 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00390
00391 if (distance_to_go > 0) {
00392 int st_max_speed = 120;
00393
00394 int delta_v = this->cur_speed / (distance_to_go + 1);
00395 if (max_speed > (this->cur_speed - delta_v)) {
00396 st_max_speed = this->cur_speed - (delta_v / 10);
00397 }
00398
00399 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00400 max_speed = min(max_speed, st_max_speed);
00401 }
00402 }
00403 }
00404
00405 for (const Train *u = this; u != NULL; u = u->Next()) {
00406 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && u->track == TRACK_BIT_DEPOT) {
00407 max_speed = min(max_speed, 61);
00408 break;
00409 }
00410
00411
00412 if (u->track == TRACK_BIT_WORMHOLE && !(u->vehstatus & VS_HIDDEN)) {
00413 max_speed = min(max_speed, GetBridgeSpec(GetBridgeType(u->tile))->speed);
00414 }
00415 }
00416
00417 max_speed = min(max_speed, this->current_order.max_speed);
00418 return min(max_speed, this->gcache.cached_max_track_speed);
00419 }
00420
00422 void Train::UpdateAcceleration()
00423 {
00424 assert(this->IsFrontEngine());
00425
00426 uint power = this->gcache.cached_power;
00427 uint weight = this->gcache.cached_weight;
00428 assert(weight != 0);
00429 this->acceleration = Clamp(power / weight * 4, 1, 255);
00430 }
00431
00437 int Train::GetDisplayImageWidth(Point *offset) const
00438 {
00439 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00440 int vehicle_pitch = 0;
00441
00442 const Engine *e = this->GetEngine();
00443 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00444 reference_width = e->GetGRF()->traininfo_vehicle_width;
00445 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00446 }
00447
00448 if (offset != NULL) {
00449 offset->x = reference_width / 2;
00450 offset->y = vehicle_pitch;
00451 }
00452 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00453 }
00454
00455 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00456 {
00457 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00458 }
00459
00466 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00467 {
00468 uint8 spritenum = this->spritenum;
00469 SpriteID sprite;
00470
00471 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00472
00473 if (is_custom_sprite(spritenum)) {
00474 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00475 if (sprite != 0) return sprite;
00476
00477 spritenum = this->GetEngine()->original_image_index;
00478 }
00479
00480 sprite = GetDefaultTrainSprite(spritenum, direction);
00481
00482 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00483
00484 return sprite;
00485 }
00486
00487 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00488 {
00489 const Engine *e = Engine::Get(engine);
00490 Direction dir = rear_head ? DIR_E : DIR_W;
00491 uint8 spritenum = e->u.rail.image_index;
00492
00493 if (is_custom_sprite(spritenum)) {
00494 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00495 if (sprite != 0) {
00496 if (e->GetGRF() != NULL) {
00497 y += e->GetGRF()->traininfo_vehicle_pitch;
00498 }
00499 return sprite;
00500 }
00501
00502 spritenum = Engine::Get(engine)->original_image_index;
00503 }
00504
00505 if (rear_head) spritenum++;
00506
00507 return GetDefaultTrainSprite(spritenum, DIR_W);
00508 }
00509
00510 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00511 {
00512 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00513 int yf = y;
00514 int yr = y;
00515
00516 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00517 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00518 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00519 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00520
00521 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);
00522
00523 DrawSprite(spritef, pal, preferred_x - 14, yf);
00524 DrawSprite(spriter, pal, preferred_x + 15, yr);
00525 } else {
00526 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00527 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00528 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));
00529 DrawSprite(sprite, pal, preferred_x, y);
00530 }
00531 }
00532
00542 void GetTrainSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
00543 {
00544 int y = 0;
00545
00546 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00547 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00548
00549 width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
00550 height = UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI);
00551 xoffs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
00552 yoffs = UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI);
00553
00554 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00555 sprite = GetRailIcon(engine, true, y, image_type);
00556 real_sprite = GetSprite(sprite, ST_NORMAL);
00557
00558
00559 width = TRAININFO_DEFAULT_VEHICLE_WIDTH + UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) + UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI) - xoffs;
00560 height = max<uint>(height, UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI));
00561 xoffs = xoffs - TRAININFO_DEFAULT_VEHICLE_WIDTH / 2;
00562 yoffs = min(yoffs, UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI));
00563 }
00564 }
00565
00574 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00575 {
00576 const RailVehicleInfo *rvi = &e->u.rail;
00577
00578
00579 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00580
00581 if (flags & DC_EXEC) {
00582 Train *v = new Train();
00583 *ret = v;
00584 v->spritenum = rvi->image_index;
00585
00586 v->engine_type = e->index;
00587 v->gcache.first_engine = INVALID_ENGINE;
00588
00589 DiagDirection dir = GetRailDepotDirection(tile);
00590
00591 v->direction = DiagDirToDir(dir);
00592 v->tile = tile;
00593
00594 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00595 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00596
00597 v->x_pos = x;
00598 v->y_pos = y;
00599 v->z_pos = GetSlopePixelZ(x, y);
00600 v->owner = _current_company;
00601 v->track = TRACK_BIT_DEPOT;
00602 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00603
00604 v->SetWagon();
00605
00606 v->SetFreeWagon();
00607 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00608
00609 v->cargo_type = e->GetDefaultCargoType();
00610 v->cargo_cap = rvi->capacity;
00611 v->refit_cap = 0;
00612
00613 v->railtype = rvi->railtype;
00614
00615 v->build_year = _cur_year;
00616 v->cur_image = SPR_IMG_QUERY;
00617 v->random_bits = VehicleRandomBits();
00618
00619 v->group_id = DEFAULT_GROUP;
00620
00621 AddArticulatedParts(v);
00622
00623 _new_vehicle_id = v->index;
00624
00625 VehicleUpdatePosition(v);
00626 v->First()->ConsistChanged(false);
00627 UpdateTrainGroupID(v->First());
00628
00629 CheckConsistencyOfArticulatedVehicle(v);
00630
00631
00632 Train *w;
00633 FOR_ALL_TRAINS(w) {
00634 if (w->tile == tile &&
00635 w->IsFreeWagon() &&
00636 w->engine_type == e->index &&
00637 w->First() != v &&
00638 !(w->vehstatus & VS_CRASHED)) {
00639 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00640 break;
00641 }
00642 }
00643 }
00644
00645 return CommandCost();
00646 }
00647
00649 static void NormalizeTrainVehInDepot(const Train *u)
00650 {
00651 const Train *v;
00652 FOR_ALL_TRAINS(v) {
00653 if (v->IsFreeWagon() && v->tile == u->tile &&
00654 v->track == TRACK_BIT_DEPOT) {
00655 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00656 CMD_MOVE_RAIL_VEHICLE).Failed())
00657 break;
00658 }
00659 }
00660 }
00661
00662 static void AddRearEngineToMultiheadedTrain(Train *v)
00663 {
00664 Train *u = new Train();
00665 v->value >>= 1;
00666 u->value = v->value;
00667 u->direction = v->direction;
00668 u->owner = v->owner;
00669 u->tile = v->tile;
00670 u->x_pos = v->x_pos;
00671 u->y_pos = v->y_pos;
00672 u->z_pos = v->z_pos;
00673 u->track = TRACK_BIT_DEPOT;
00674 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00675 u->spritenum = v->spritenum + 1;
00676 u->cargo_type = v->cargo_type;
00677 u->cargo_subtype = v->cargo_subtype;
00678 u->cargo_cap = v->cargo_cap;
00679 u->refit_cap = v->refit_cap;
00680 u->railtype = v->railtype;
00681 u->engine_type = v->engine_type;
00682 u->build_year = v->build_year;
00683 u->cur_image = SPR_IMG_QUERY;
00684 u->random_bits = VehicleRandomBits();
00685 v->SetMultiheaded();
00686 u->SetMultiheaded();
00687 v->SetNext(u);
00688 VehicleUpdatePosition(u);
00689
00690
00691 v->other_multiheaded_part = u;
00692 u->other_multiheaded_part = v;
00693 }
00694
00704 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00705 {
00706 const RailVehicleInfo *rvi = &e->u.rail;
00707
00708 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00709
00710
00711
00712 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00713
00714 if (flags & DC_EXEC) {
00715 DiagDirection dir = GetRailDepotDirection(tile);
00716 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00717 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00718
00719 Train *v = new Train();
00720 *ret = v;
00721 v->direction = DiagDirToDir(dir);
00722 v->tile = tile;
00723 v->owner = _current_company;
00724 v->x_pos = x;
00725 v->y_pos = y;
00726 v->z_pos = GetSlopePixelZ(x, y);
00727 v->track = TRACK_BIT_DEPOT;
00728 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00729 v->spritenum = rvi->image_index;
00730 v->cargo_type = e->GetDefaultCargoType();
00731 v->cargo_cap = rvi->capacity;
00732 v->refit_cap = 0;
00733 v->last_station_visited = INVALID_STATION;
00734 v->last_loading_station = INVALID_STATION;
00735
00736 v->engine_type = e->index;
00737 v->gcache.first_engine = INVALID_ENGINE;
00738
00739 v->reliability = e->reliability;
00740 v->reliability_spd_dec = e->reliability_spd_dec;
00741 v->max_age = e->GetLifeLengthInDays();
00742
00743 v->railtype = rvi->railtype;
00744 _new_vehicle_id = v->index;
00745
00746 v->SetServiceInterval(Company::Get(_current_company)->settings.vehicle.servint_trains);
00747 v->date_of_last_service = _date;
00748 v->build_year = _cur_year;
00749 v->cur_image = SPR_IMG_QUERY;
00750 v->random_bits = VehicleRandomBits();
00751
00752 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00753 v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);
00754
00755 v->group_id = DEFAULT_GROUP;
00756
00757 v->SetFrontEngine();
00758 v->SetEngine();
00759
00760 VehicleUpdatePosition(v);
00761
00762 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00763 AddRearEngineToMultiheadedTrain(v);
00764 } else {
00765 AddArticulatedParts(v);
00766 }
00767
00768 v->ConsistChanged(false);
00769 UpdateTrainGroupID(v);
00770
00771 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00772 NormalizeTrainVehInDepot(v);
00773 }
00774
00775 CheckConsistencyOfArticulatedVehicle(v);
00776 }
00777
00778 return CommandCost();
00779 }
00780
00781 static Train *FindGoodVehiclePos(const Train *src)
00782 {
00783 EngineID eng = src->engine_type;
00784 TileIndex tile = src->tile;
00785
00786 Train *dst;
00787 FOR_ALL_TRAINS(dst) {
00788 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00789
00790 Train *t = dst;
00791 while (t->engine_type == eng) {
00792 t = t->Next();
00793 if (t == NULL) return dst;
00794 }
00795 }
00796 }
00797
00798 return NULL;
00799 }
00800
00802 typedef SmallVector<Train *, 16> TrainList;
00803
00809 static void MakeTrainBackup(TrainList &list, Train *t)
00810 {
00811 for (; t != NULL; t = t->Next()) *list.Append() = t;
00812 }
00813
00818 static void RestoreTrainBackup(TrainList &list)
00819 {
00820
00821 if (list.Length() == 0) return;
00822
00823 Train *prev = NULL;
00824
00825 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00826 Train *t = *iter;
00827 if (prev != NULL) {
00828 prev->SetNext(t);
00829 } else if (t->Previous() != NULL) {
00830
00831 t->Previous()->SetNext(NULL);
00832 }
00833 prev = t;
00834 }
00835 }
00836
00842 static void RemoveFromConsist(Train *part, bool chain = false)
00843 {
00844 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00845
00846
00847
00848 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00849
00850
00851 tail->SetNext(NULL);
00852 }
00853
00859 static void InsertInConsist(Train *dst, Train *chain)
00860 {
00861
00862 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00863
00864 chain->Last()->SetNext(dst->Next());
00865 dst->SetNext(chain);
00866 }
00867
00873 static void NormaliseDualHeads(Train *t)
00874 {
00875 for (; t != NULL; t = t->GetNextVehicle()) {
00876 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00877
00878
00879 Train *u;
00880 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00881
00882 if (u == t->other_multiheaded_part) continue;
00883
00884
00885 RemoveFromConsist(t->other_multiheaded_part);
00886
00887 InsertInConsist(u, t->other_multiheaded_part);
00888 }
00889 }
00890
00895 static void NormaliseSubtypes(Train *chain)
00896 {
00897
00898 if (chain == NULL) return;
00899
00900
00901 assert(chain->Previous() == NULL);
00902
00903
00904 if (chain->IsWagon()) {
00905 chain->SetFreeWagon();
00906 } else {
00907 assert(chain->IsEngine());
00908 chain->SetFrontEngine();
00909 }
00910
00911
00912 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00913 t->ClearFreeWagon();
00914 t->ClearFrontEngine();
00915 }
00916 }
00917
00927 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00928 {
00929
00930
00931
00932 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00933 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00934 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00935 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00936 return CommandCost();
00937 }
00938
00939
00940
00941 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00942
00943 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00944 }
00945
00951 static CommandCost CheckTrainAttachment(Train *t)
00952 {
00953
00954 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00955
00956
00957
00958 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00959
00960 Train *head = t;
00961 Train *prev = t;
00962
00963
00964 t = t->Next();
00965 prev->SetNext(NULL);
00966
00967
00968 head->InvalidateNewGRFCache();
00969
00970 while (t != NULL) {
00971 allowed_len -= t->gcache.cached_veh_length;
00972
00973 Train *next = t->Next();
00974
00975
00976
00977 t->SetNext(NULL);
00978
00979
00980 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00981
00982 EngineID first_engine = t->gcache.first_engine;
00983 t->gcache.first_engine = INVALID_ENGINE;
00984
00985
00986
00987 t->InvalidateNewGRFCache();
00988
00989 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00990
00991
00992 t->gcache.first_engine = first_engine;
00993
00994
00995 t->InvalidateNewGRFCache();
00996 head->InvalidateNewGRFCache();
00997
00998 if (callback != CALLBACK_FAILED) {
00999
01000 StringID error = STR_NULL;
01001
01002 if (head->GetGRF()->grf_version < 8) {
01003 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01004 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01005 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
01006 } else {
01007 if (callback < 0x400) {
01008 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01009 } else {
01010 switch (callback) {
01011 case 0x400:
01012 case 0x401:
01013 break;
01014
01015 default:
01016 case 0x402:
01017 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01018 break;
01019 }
01020 }
01021 }
01022
01023 if (error != STR_NULL) return_cmd_error(error);
01024 }
01025 }
01026
01027
01028 prev->SetNext(t);
01029 prev = t;
01030 t = next;
01031 }
01032
01033 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01034 return CommandCost();
01035 }
01036
01047 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01048 {
01049
01050 CommandCost ret = CheckTrainAttachment(src);
01051 if (ret.Failed()) return ret;
01052 ret = CheckTrainAttachment(dst);
01053 if (ret.Failed()) return ret;
01054
01055
01056 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01057 }
01058
01067 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01068 {
01069
01070 if (*src_head == *dst_head) {
01071
01072
01073 *dst_head = NULL;
01074 } else if (*dst_head == NULL) {
01075
01076
01077 *dst_head = src;
01078 }
01079
01080 if (src == *src_head) {
01081
01082
01083
01084
01085
01086
01087 *src_head = move_chain ? NULL :
01088 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01089 }
01090
01091
01092
01093
01094 RemoveFromConsist(src, move_chain);
01095 if (*dst_head != src) InsertInConsist(dst, src);
01096
01097
01098
01099 NormaliseDualHeads(*src_head);
01100 NormaliseDualHeads(*dst_head);
01101 }
01102
01108 static void NormaliseTrainHead(Train *head)
01109 {
01110
01111 if (head == NULL) return;
01112
01113
01114 head->ConsistChanged(false);
01115 UpdateTrainGroupID(head);
01116
01117
01118 if (!head->IsFrontEngine()) return;
01119
01120
01121 InvalidateWindowData(WC_VEHICLE_REFIT, head->index, VIWD_CONSIST_CHANGED);
01122 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01123
01124
01125 if (head->unitnumber != 0) return;
01126 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01127 }
01128
01141 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01142 {
01143 VehicleID s = GB(p1, 0, 20);
01144 VehicleID d = GB(p2, 0, 20);
01145 bool move_chain = HasBit(p1, 20);
01146
01147 Train *src = Train::GetIfValid(s);
01148 if (src == NULL) return CMD_ERROR;
01149
01150 CommandCost ret = CheckOwnership(src->owner);
01151 if (ret.Failed()) return ret;
01152
01153
01154 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01155
01156
01157 Train *dst;
01158 if (d == INVALID_VEHICLE) {
01159 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01160 } else {
01161 dst = Train::GetIfValid(d);
01162 if (dst == NULL) return CMD_ERROR;
01163
01164 CommandCost ret = CheckOwnership(dst->owner);
01165 if (ret.Failed()) return ret;
01166
01167
01168 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01169 }
01170
01171
01172 src = src->GetFirstEnginePart();
01173 if (dst != NULL) {
01174 dst = dst->GetFirstEnginePart();
01175 }
01176
01177
01178 if (src == dst) return CommandCost();
01179
01180
01181 Train *src_head = src->First();
01182 Train *dst_head;
01183 if (dst != NULL) {
01184 dst_head = dst->First();
01185 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01186
01187 dst = dst->GetLastEnginePart();
01188 } else {
01189 dst_head = NULL;
01190 }
01191
01192 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01193
01194
01195 if (move_chain && src_head == dst_head) return CommandCost();
01196
01197
01198 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01199
01200
01201 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01202
01203
01204 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01205
01206
01207
01208 TrainList original_src;
01209 TrainList original_dst;
01210
01211 MakeTrainBackup(original_src, src_head);
01212 MakeTrainBackup(original_dst, dst_head);
01213
01214
01215
01216
01217 Train *original_src_head = src_head;
01218 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01219
01220
01221 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01222 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01223
01224
01225 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01226
01227 if ((flags & DC_AUTOREPLACE) == 0) {
01228
01229
01230
01231 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01232 if (ret.Failed()) {
01233
01234 RestoreTrainBackup(original_src);
01235 RestoreTrainBackup(original_dst);
01236 return ret;
01237 }
01238 }
01239
01240
01241 if (flags & DC_EXEC) {
01242
01243 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01244 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01245
01246
01247 NormaliseSubtypes(src_head);
01248 NormaliseSubtypes(dst_head);
01249
01250
01251
01252
01253
01254
01255
01256
01257
01258
01259
01260
01261
01262
01263
01264
01265
01266
01267
01268
01269
01270 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01271
01272 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01273 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01274 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01275 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01276 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01277 SetWindowDirty(WC_COMPANY, _current_company);
01278
01279
01280
01281 DeleteVehicleOrders(src);
01282 RemoveVehicleFromGroup(src);
01283 src->unitnumber = 0;
01284 }
01285
01286
01287
01288 if (original_src_head != src && dst_head == src) {
01289 SetTrainGroupID(src, DEFAULT_GROUP);
01290 SetWindowDirty(WC_COMPANY, _current_company);
01291 }
01292
01293
01294 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01295 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01296
01297
01298 NormaliseTrainHead(src_head);
01299 NormaliseTrainHead(dst_head);
01300
01301 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01302 CheckCargoCapacity(src_head);
01303 CheckCargoCapacity(dst_head);
01304 }
01305
01306
01307 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01308 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01309 } else {
01310
01311 RestoreTrainBackup(original_src);
01312 RestoreTrainBackup(original_dst);
01313 }
01314
01315 return CommandCost();
01316 }
01317
01329 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01330 {
01331
01332 Window *w = NULL;
01333
01334
01335 bool sell_chain = HasBit(data, 0);
01336
01337 Train *v = Train::From(t)->GetFirstEnginePart();
01338 Train *first = v->First();
01339
01340 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01341
01342
01343
01344 TrainList original;
01345 MakeTrainBackup(original, first);
01346
01347
01348 Train *new_head = first;
01349 Train *sell_head = NULL;
01350
01351
01352 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01353
01354
01355 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01356 if (ret.Failed()) {
01357
01358 RestoreTrainBackup(original);
01359 return ret;
01360 }
01361
01362 CommandCost cost(EXPENSES_NEW_VEHICLES);
01363 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01364
01365 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01366 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01367 }
01368
01369
01370 if (flags & DC_EXEC) {
01371
01372 NormaliseSubtypes(new_head);
01373
01374 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01375
01376
01377 new_head->orders.list = first->orders.list;
01378 new_head->AddToShared(first);
01379 DeleteVehicleOrders(first);
01380
01381
01382 new_head->CopyVehicleConfigAndStatistics(first);
01383 GroupStatistics::CountVehicle(new_head, 1);
01384
01385
01386 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01387 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01388 OrderBackup::Backup(v, user);
01389 }
01390
01391
01392 NormaliseTrainHead(new_head);
01393
01394
01395 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01396 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01397
01398
01399 delete sell_head;
01400 } else {
01401
01402 RestoreTrainBackup(original);
01403 }
01404
01405 return cost;
01406 }
01407
01408 void Train::UpdateDeltaXY(Direction direction)
01409 {
01410
01411 this->x_offs = -1;
01412 this->y_offs = -1;
01413 this->x_extent = 3;
01414 this->y_extent = 3;
01415 this->z_extent = 6;
01416 this->x_bb_offs = 0;
01417 this->y_bb_offs = 0;
01418
01419 if (!IsDiagonalDirection(direction)) {
01420 static const int _sign_table[] =
01421 {
01422
01423 -1, -1,
01424 -1, 1,
01425 1, 1,
01426 1, -1,
01427 };
01428
01429 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01430
01431
01432 this->x_offs -= half_shorten * _sign_table[direction];
01433 this->y_offs -= half_shorten * _sign_table[direction + 1];
01434 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01435 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01436 } else {
01437 switch (direction) {
01438
01439
01440 case DIR_NE:
01441 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01442 this->x_extent = this->gcache.cached_veh_length - 1;
01443 this->x_bb_offs = -1;
01444 break;
01445
01446 case DIR_NW:
01447 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01448 this->y_extent = this->gcache.cached_veh_length - 1;
01449 this->y_bb_offs = -1;
01450 break;
01451
01452
01453
01454 case DIR_SW:
01455 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01456 this->x_extent = VEHICLE_LENGTH - 1;
01457 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01458 break;
01459
01460 case DIR_SE:
01461 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01462 this->y_extent = VEHICLE_LENGTH - 1;
01463 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01464 break;
01465
01466 default:
01467 NOT_REACHED();
01468 }
01469 }
01470 }
01471
01476 static void MarkTrainAsStuck(Train *v)
01477 {
01478 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01479
01480 SetBit(v->flags, VRF_TRAIN_STUCK);
01481
01482 v->wait_counter = 0;
01483
01484
01485 v->cur_speed = 0;
01486 v->subspeed = 0;
01487 v->SetLastSpeed();
01488
01489 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01490 }
01491 }
01492
01500 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01501 {
01502 uint16 flag1 = *swap_flag1;
01503 uint16 flag2 = *swap_flag2;
01504
01505
01506 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01507 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01508 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01509 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01510
01511
01512 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01513 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01514 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01515 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01516 }
01517 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01518 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01519 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01520 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01521 }
01522 }
01523
01528 static void UpdateStatusAfterSwap(Train *v)
01529 {
01530
01531 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01532
01533
01534 if (v->track != TRACK_BIT_WORMHOLE) {
01535 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01536 } else {
01537
01538
01539
01540
01541 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01542 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01543 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01544 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01545
01546
01547
01548 VehicleUpdatePosition(v);
01549 v->UpdateInclination(true, true);
01550 return;
01551 }
01552 }
01553 }
01554
01555 VehicleUpdatePosition(v);
01556 v->UpdateViewport(true, true);
01557 }
01558
01565 void ReverseTrainSwapVeh(Train *v, int l, int r)
01566 {
01567 Train *a, *b;
01568
01569
01570 for (a = v; l != 0; l--) a = a->Next();
01571 for (b = v; r != 0; r--) b = b->Next();
01572
01573 if (a != b) {
01574
01575 {
01576 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01577 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01578 a->vehstatus = tmp;
01579 }
01580
01581 Swap(a->track, b->track);
01582 Swap(a->direction, b->direction);
01583 Swap(a->x_pos, b->x_pos);
01584 Swap(a->y_pos, b->y_pos);
01585 Swap(a->tile, b->tile);
01586 Swap(a->z_pos, b->z_pos);
01587
01588 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01589
01590 UpdateStatusAfterSwap(a);
01591 UpdateStatusAfterSwap(b);
01592 } else {
01593
01594
01595
01596 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01597 UpdateStatusAfterSwap(a);
01598 }
01599 }
01600
01601
01607 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01608 {
01609 return (v->type == VEH_TRAIN) ? v : NULL;
01610 }
01611
01612
01619 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01620 {
01621 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01622
01623 Train *t = Train::From(v);
01624 if (!t->IsFrontEngine()) return NULL;
01625
01626 TileIndex tile = *(TileIndex *)data;
01627
01628 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01629
01630 return t;
01631 }
01632
01633
01640 static bool TrainApproachingCrossing(TileIndex tile)
01641 {
01642 assert(IsLevelCrossingTile(tile));
01643
01644 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01645 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01646
01647 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01648
01649 dir = ReverseDiagDir(dir);
01650 tile_from = tile + TileOffsByDiagDir(dir);
01651
01652 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01653 }
01654
01655
01662 void UpdateLevelCrossing(TileIndex tile, bool sound)
01663 {
01664 assert(IsLevelCrossingTile(tile));
01665
01666
01667 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01668
01669 if (new_state != IsCrossingBarred(tile)) {
01670 if (new_state && sound) {
01671 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01672 }
01673 SetCrossingBarred(tile, new_state);
01674 MarkTileDirtyByTile(tile);
01675 }
01676 }
01677
01678
01684 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01685 {
01686 if (!IsCrossingBarred(tile)) {
01687 BarCrossing(tile);
01688 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01689 MarkTileDirtyByTile(tile);
01690 }
01691 }
01692
01693
01699 static void AdvanceWagonsBeforeSwap(Train *v)
01700 {
01701 Train *base = v;
01702 Train *first = base;
01703 Train *last = v->Last();
01704 uint length = CountVehiclesInChain(v);
01705
01706 while (length > 2) {
01707 last = last->Previous();
01708 first = first->Next();
01709
01710 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01711
01712
01713
01714 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01715
01716 base = first;
01717 length -= 2;
01718 }
01719 }
01720
01721
01727 static void AdvanceWagonsAfterSwap(Train *v)
01728 {
01729
01730 Train *dep = v;
01731 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01732 dep = dep->Next();
01733 }
01734
01735 Train *leave = dep->Next();
01736
01737 if (leave != NULL) {
01738
01739 int d = TicksToLeaveDepot(dep);
01740
01741 if (d <= 0) {
01742 leave->vehstatus &= ~VS_HIDDEN;
01743 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01744 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01745 }
01746 } else {
01747 dep = NULL;
01748 }
01749
01750 Train *base = v;
01751 Train *first = base;
01752 Train *last = v->Last();
01753 uint length = CountVehiclesInChain(v);
01754
01755
01756
01757 bool nomove = (dep == NULL);
01758
01759 while (length > 2) {
01760
01761
01762 if (base == dep) break;
01763
01764
01765 if (last == dep) nomove = true;
01766
01767 last = last->Previous();
01768 first = first->Next();
01769
01770 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01771
01772
01773 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01774
01775 base = first;
01776 length -= 2;
01777 }
01778 }
01779
01784 void ReverseTrainDirection(Train *v)
01785 {
01786 if (IsRailDepotTile(v->tile)) {
01787 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01788 }
01789
01790
01791 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01792
01793
01794 TileIndex crossing = TrainApproachingCrossingTile(v);
01795
01796
01797 int r = CountVehiclesInChain(v) - 1;
01798
01799 AdvanceWagonsBeforeSwap(v);
01800
01801
01802 int l = 0;
01803 do {
01804 ReverseTrainSwapVeh(v, l++, r--);
01805 } while (l <= r);
01806
01807 AdvanceWagonsAfterSwap(v);
01808
01809 if (IsRailDepotTile(v->tile)) {
01810 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01811 }
01812
01813 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01814
01815 ClrBit(v->flags, VRF_REVERSING);
01816
01817
01818 v->ConsistChanged(true);
01819
01820
01821 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01822
01823
01824 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01825
01826
01827 crossing = TrainApproachingCrossingTile(v);
01828 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01829
01830
01831 if (v->track == TRACK_BIT_DEPOT) {
01832
01833 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01834 ClrBit(v->flags, VRF_TRAIN_STUCK);
01835 return;
01836 }
01837
01838
01839
01840 DiagDirection dir = TrainExitDir(v->direction, v->track);
01841 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01842
01843 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01844
01845
01846 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01847 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01848 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01849
01850
01851 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01852
01853 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01854 if (TryPathReserve(v, false, first_tile_okay)) {
01855
01856 CheckNextTrainTile(v);
01857 } else if (v->current_order.GetType() != OT_LOADING) {
01858
01859 MarkTrainAsStuck(v);
01860 }
01861 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01862
01863 ClrBit(v->flags, VRF_TRAIN_STUCK);
01864 v->wait_counter = 0;
01865 }
01866 }
01867
01877 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01878 {
01879 Train *v = Train::GetIfValid(p1);
01880 if (v == NULL) return CMD_ERROR;
01881
01882 CommandCost ret = CheckOwnership(v->owner);
01883 if (ret.Failed()) return ret;
01884
01885 if (p2 != 0) {
01886
01887
01888 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01889 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01890 }
01891 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01892
01893 Train *front = v->First();
01894
01895 if (!front->IsStoppedInDepot()) {
01896 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01897 }
01898
01899 if (flags & DC_EXEC) {
01900 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01901
01902 front->ConsistChanged(false);
01903 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01904 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01905 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01906 SetWindowClassesDirty(WC_TRAINS_LIST);
01907 }
01908 } else {
01909
01910 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01911
01912 if (flags & DC_EXEC) {
01913
01914 if (v->current_order.IsType(OT_LOADING)) {
01915 const Vehicle *last = v;
01916 while (last->Next() != NULL) last = last->Next();
01917
01918
01919 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01920 v->LeaveStation();
01921 }
01922 }
01923
01924
01925 v->force_proceed = TFP_NONE;
01926 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01927
01928 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01929 ToggleBit(v->flags, VRF_REVERSING);
01930 } else {
01931 v->cur_speed = 0;
01932 v->SetLastSpeed();
01933 HideFillingPercent(&v->fill_percent_te_id);
01934 ReverseTrainDirection(v);
01935 }
01936 }
01937 }
01938 return CommandCost();
01939 }
01940
01950 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01951 {
01952 Train *t = Train::GetIfValid(p1);
01953 if (t == NULL) return CMD_ERROR;
01954
01955 if (!t->IsPrimaryVehicle()) return CMD_ERROR;
01956
01957 CommandCost ret = CheckOwnership(t->owner);
01958 if (ret.Failed()) return ret;
01959
01960
01961 if (flags & DC_EXEC) {
01962
01963
01964
01965
01966
01967 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsChainInDepot() ? TFP_STUCK : TFP_SIGNAL;
01968 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01969 }
01970
01971 return CommandCost();
01972 }
01973
01981 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01982 {
01983 assert(!(v->vehstatus & VS_CRASHED));
01984
01985 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01986
01987 PBSTileInfo origin = FollowTrainReservation(v);
01988 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01989
01990 switch (_settings_game.pf.pathfinder_for_trains) {
01991 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01992 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01993
01994 default: NOT_REACHED();
01995 }
01996 }
01997
02005 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02006 {
02007 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02008 if (tfdd.best_length == UINT_MAX) return false;
02009
02010 if (location != NULL) *location = tfdd.tile;
02011 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02012 if (reverse != NULL) *reverse = tfdd.reverse;
02013
02014 return true;
02015 }
02016
02018 void Train::PlayLeaveStationSound() const
02019 {
02020 static const SoundFx sfx[] = {
02021 SND_04_TRAIN,
02022 SND_0A_TRAIN_HORN,
02023 SND_0A_TRAIN_HORN,
02024 SND_47_MAGLEV_2,
02025 SND_41_MAGLEV
02026 };
02027
02028 if (PlayVehicleSound(this, VSE_START)) return;
02029
02030 EngineID engtype = this->engine_type;
02031 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02032 }
02033
02038 static void CheckNextTrainTile(Train *v)
02039 {
02040
02041 if (_settings_game.pf.path_backoff_interval == 255) return;
02042
02043
02044 if (v->track == TRACK_BIT_DEPOT) return;
02045
02046 switch (v->current_order.GetType()) {
02047
02048 case OT_GOTO_DEPOT:
02049 if (v->tile == v->dest_tile) return;
02050 break;
02051
02052 case OT_GOTO_WAYPOINT:
02053
02054 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02055 break;
02056
02057 case OT_NOTHING:
02058 case OT_LEAVESTATION:
02059 case OT_LOADING:
02060
02061 if (v->GetNumOrders() > 0) return;
02062 break;
02063
02064 default:
02065 break;
02066 }
02067
02068 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02069
02070 Trackdir td = v->GetVehicleTrackdir();
02071
02072
02073 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02074 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02075 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02076
02077 CFollowTrackRail ft(v);
02078 if (!ft.Follow(v->tile, td)) return;
02079
02080 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02081
02082 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02083 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02084
02085 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02086 if (_settings_game.pf.forbid_90_deg) {
02087 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02088 }
02089 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02090 }
02091 }
02092 }
02093 }
02094
02100 static bool CheckTrainStayInDepot(Train *v)
02101 {
02102
02103 for (const Train *u = v; u != NULL; u = u->Next()) {
02104 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02105 }
02106
02107
02108 if (v->gcache.cached_power == 0) {
02109 v->vehstatus |= VS_STOPPED;
02110 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02111 return true;
02112 }
02113
02114 SigSegState seg_state;
02115
02116 if (v->force_proceed == TFP_NONE) {
02117
02118 if (++v->wait_counter < 37) {
02119 SetWindowClassesDirty(WC_TRAINS_LIST);
02120 return true;
02121 }
02122
02123 v->wait_counter = 0;
02124
02125 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02126 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02127
02128 SetWindowClassesDirty(WC_TRAINS_LIST);
02129 return true;
02130 }
02131 } else {
02132 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02133 }
02134
02135
02136 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02137
02138 if (HasDepotReservation(v->tile)) return true;
02139 SetDepotReservation(v->tile, true);
02140 VehicleEnterDepot(v);
02141 return true;
02142 }
02143
02144
02145 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02146
02147 SetWindowClassesDirty(WC_TRAINS_LIST);
02148 MarkTrainAsStuck(v);
02149 return true;
02150 }
02151
02152 SetDepotReservation(v->tile, true);
02153 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02154
02155 VehicleServiceInDepot(v);
02156 SetWindowClassesDirty(WC_TRAINS_LIST);
02157 v->PlayLeaveStationSound();
02158
02159 v->track = TRACK_BIT_X;
02160 if (v->direction & 2) v->track = TRACK_BIT_Y;
02161
02162 v->vehstatus &= ~VS_HIDDEN;
02163 v->cur_speed = 0;
02164
02165 v->UpdateViewport(true, true);
02166 VehicleUpdatePosition(v);
02167 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02168 v->UpdateAcceleration();
02169 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02170
02171 return false;
02172 }
02173
02180 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02181 {
02182 DiagDirection dir = TrackdirToExitdir(track_dir);
02183
02184 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02185
02186 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02187 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02188
02189 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02190
02191 SetTunnelBridgeReservation(tile, false);
02192 SetTunnelBridgeReservation(end, false);
02193
02194 if (_settings_client.gui.show_track_reservation) {
02195 MarkTileDirtyByTile(tile);
02196 MarkTileDirtyByTile(end);
02197 }
02198 }
02199 }
02200 } else if (IsRailStationTile(tile)) {
02201 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02202
02203
02204 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02205 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02206 }
02207 } else {
02208
02209 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02210 }
02211 }
02212
02219 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02220 {
02221 assert(v->IsFrontEngine());
02222
02223 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02224 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02225 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02226 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02227
02228
02229 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02230 if (v->track == TRACK_BIT_DEPOT) {
02231
02232 for (const Train *u = v; u != NULL; u = u->Next()) {
02233 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02234 }
02235 }
02236
02237 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02238
02239 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02240 while (ft.Follow(tile, td)) {
02241 tile = ft.m_new_tile;
02242 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02243 td = RemoveFirstTrackdir(&bits);
02244 assert(bits == TRACKDIR_BIT_NONE);
02245
02246 if (!IsValidTrackdir(td)) break;
02247
02248 if (IsTileType(tile, MP_RAILWAY)) {
02249 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02250
02251 UnreserveRailTrack(tile, TrackdirToTrack(td));
02252 break;
02253 }
02254 if (HasPbsSignalOnTrackdir(tile, td)) {
02255 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02256
02257 break;
02258 } else {
02259
02260 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02261 MarkTileDirtyByTile(tile);
02262 }
02263 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02264 break;
02265 }
02266 }
02267
02268
02269 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);
02270
02271 free_tile = true;
02272 }
02273 }
02274
02275 static const byte _initial_tile_subcoord[6][4][3] = {
02276 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02277 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02278 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02279 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02280 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02281 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02282 };
02283
02296 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02297 {
02298 switch (_settings_game.pf.pathfinder_for_trains) {
02299 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02300 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02301
02302 default: NOT_REACHED();
02303 }
02304 }
02305
02311 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02312 {
02313 PBSTileInfo origin = FollowTrainReservation(v);
02314
02315 CFollowTrackRail ft(v);
02316
02317 TileIndex tile = origin.tile;
02318 Trackdir cur_td = origin.trackdir;
02319 while (ft.Follow(tile, cur_td)) {
02320 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02321
02322 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02323 }
02324
02325 if (_settings_game.pf.forbid_90_deg) {
02326 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02327 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02328 }
02329
02330
02331 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02332 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02333
02334
02335
02336
02337
02338
02339 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02340
02341
02342
02343 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02344
02345
02346 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02347 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02348 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02349 }
02350
02351 tile = ft.m_new_tile;
02352 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02353
02354 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02355 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02356 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02357
02358 return PBSTileInfo(tile, cur_td, true);
02359 }
02360
02361 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02362 }
02363
02364 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02365
02366 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02367 }
02368
02369
02370 tile = origin.tile;
02371 cur_td = origin.trackdir;
02372 TileIndex stopped = ft.m_old_tile;
02373 Trackdir stopped_td = ft.m_old_td;
02374 while (tile != stopped || cur_td != stopped_td) {
02375 if (!ft.Follow(tile, cur_td)) break;
02376
02377 if (_settings_game.pf.forbid_90_deg) {
02378 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02379 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02380 }
02381 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02382
02383 tile = ft.m_new_tile;
02384 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02385
02386 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02387 }
02388
02389
02390 return PBSTileInfo();
02391 }
02392
02403 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02404 {
02405 switch (_settings_game.pf.pathfinder_for_trains) {
02406 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02407 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02408
02409 default: NOT_REACHED();
02410 }
02411 }
02412
02414 class VehicleOrderSaver {
02415 private:
02416 Train *v;
02417 Order old_order;
02418 TileIndex old_dest_tile;
02419 StationID old_last_station_visited;
02420 VehicleOrderID index;
02421 bool suppress_implicit_orders;
02422
02423 public:
02424 VehicleOrderSaver(Train *_v) :
02425 v(_v),
02426 old_order(_v->current_order),
02427 old_dest_tile(_v->dest_tile),
02428 old_last_station_visited(_v->last_station_visited),
02429 index(_v->cur_real_order_index),
02430 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02431 {
02432 }
02433
02434 ~VehicleOrderSaver()
02435 {
02436 this->v->current_order = this->old_order;
02437 this->v->dest_tile = this->old_dest_tile;
02438 this->v->last_station_visited = this->old_last_station_visited;
02439 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02440 }
02441
02447 bool SwitchToNextOrder(bool skip_first)
02448 {
02449 if (this->v->GetNumOrders() == 0) return false;
02450
02451 if (skip_first) ++this->index;
02452
02453 int depth = 0;
02454
02455 do {
02456
02457 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02458
02459 Order *order = this->v->GetOrder(this->index);
02460 assert(order != NULL);
02461
02462 switch (order->GetType()) {
02463 case OT_GOTO_DEPOT:
02464
02465 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02466 case OT_GOTO_STATION:
02467 case OT_GOTO_WAYPOINT:
02468 this->v->current_order = *order;
02469 return UpdateOrderDest(this->v, order, 0, true);
02470 case OT_CONDITIONAL: {
02471 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02472 if (next != INVALID_VEH_ORDER_ID) {
02473 depth++;
02474 this->index = next;
02475
02476 continue;
02477 }
02478 break;
02479 }
02480 default:
02481 break;
02482 }
02483
02484
02485 ++this->index;
02486 depth++;
02487 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02488
02489 return false;
02490 }
02491 };
02492
02493
02494 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02495 {
02496 Track best_track = INVALID_TRACK;
02497 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02498 bool changed_signal = false;
02499
02500 assert((tracks & ~TRACK_BIT_MASK) == 0);
02501
02502 if (got_reservation != NULL) *got_reservation = false;
02503
02504
02505 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02506
02507 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02508
02509
02510 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02511 Track track = FindFirstTrack(tracks);
02512
02513 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02514 do_track_reservation = true;
02515 changed_signal = true;
02516 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02517 } else if (!do_track_reservation) {
02518 return track;
02519 }
02520 best_track = track;
02521 }
02522
02523 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02524 DiagDirection dest_enterdir = enterdir;
02525 if (do_track_reservation) {
02526 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02527 if (res_dest.tile == INVALID_TILE) {
02528
02529 if (mark_stuck) MarkTrainAsStuck(v);
02530 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02531 return FindFirstTrack(tracks);
02532 }
02533 if (res_dest.okay) {
02534
02535 if (got_reservation != NULL) *got_reservation = true;
02536 if (changed_signal) MarkTileDirtyByTile(tile);
02537 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02538 return best_track;
02539 }
02540
02541
02542
02543
02544 CheckIfTrainNeedsService(v);
02545 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02546 }
02547
02548
02549 VehicleOrderSaver orders(v);
02550
02551
02552
02553
02554
02555
02556
02557 if (v->current_order.IsType(OT_LEAVESTATION)) {
02558 orders.SwitchToNextOrder(false);
02559 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02560 v->current_order.IsType(OT_GOTO_STATION) ?
02561 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02562 v->tile == v->dest_tile))) {
02563 orders.SwitchToNextOrder(true);
02564 }
02565
02566 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02567
02568 bool path_found = true;
02569 TileIndex new_tile = res_dest.tile;
02570
02571 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02572 if (new_tile == tile) best_track = next_track;
02573 v->HandlePathfindingResult(path_found);
02574 }
02575
02576
02577 if (!do_track_reservation) return best_track;
02578
02579
02580 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02581 if (mark_stuck) MarkTrainAsStuck(v);
02582 FreeTrainTrackReservation(v);
02583 return best_track;
02584 }
02585
02586
02587 if (res_dest.tile == INVALID_TILE) {
02588
02589 PBSTileInfo origin = FollowTrainReservation(v);
02590 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02591 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02592 best_track = FindFirstTrack(res);
02593 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02594 if (got_reservation != NULL) *got_reservation = true;
02595 if (changed_signal) MarkTileDirtyByTile(tile);
02596 } else {
02597 FreeTrainTrackReservation(v);
02598 if (mark_stuck) MarkTrainAsStuck(v);
02599 }
02600 return best_track;
02601 }
02602
02603 if (got_reservation != NULL) *got_reservation = true;
02604
02605
02606 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02607
02608 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02609 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02610 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02611 if (_settings_game.pf.forbid_90_deg) {
02612 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02613 }
02614
02615
02616 if (orders.SwitchToNextOrder(true)) {
02617 PBSTileInfo cur_dest;
02618 bool path_found;
02619 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02620 if (cur_dest.tile != INVALID_TILE) {
02621 res_dest = cur_dest;
02622 if (res_dest.okay) continue;
02623
02624 FreeTrainTrackReservation(v);
02625 if (mark_stuck) MarkTrainAsStuck(v);
02626 if (got_reservation != NULL) *got_reservation = false;
02627 changed_signal = false;
02628 break;
02629 }
02630 }
02631
02632 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02633 FreeTrainTrackReservation(v);
02634 if (mark_stuck) MarkTrainAsStuck(v);
02635 if (got_reservation != NULL) *got_reservation = false;
02636 changed_signal = false;
02637 }
02638 break;
02639 }
02640
02641 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02642
02643 if (changed_signal) MarkTileDirtyByTile(tile);
02644
02645 return best_track;
02646 }
02647
02656 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02657 {
02658 assert(v->IsFrontEngine());
02659
02660
02661
02662
02663 if (v->track == TRACK_BIT_DEPOT) {
02664 if (HasDepotReservation(v->tile)) {
02665 if (mark_as_stuck) MarkTrainAsStuck(v);
02666 return false;
02667 } else {
02668
02669 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02670 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02671 }
02672 }
02673
02674 Vehicle *other_train = NULL;
02675 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02676
02677
02678
02679
02680
02681 if (other_train != NULL && other_train->index != v->index) {
02682 if (mark_as_stuck) MarkTrainAsStuck(v);
02683 return false;
02684 }
02685
02686 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02687
02688 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02689 ClrBit(v->flags, VRF_TRAIN_STUCK);
02690 return true;
02691 }
02692
02693
02694 if (v->track == TRACK_BIT_DEPOT) {
02695 SetDepotReservation(v->tile, true);
02696 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02697 }
02698
02699 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02700 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02701 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02702
02703 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02704
02705 bool res_made = false;
02706 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02707
02708 if (!res_made) {
02709
02710 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02711 return false;
02712 }
02713
02714 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02715 v->wait_counter = 0;
02716 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02717 }
02718 ClrBit(v->flags, VRF_TRAIN_STUCK);
02719 return true;
02720 }
02721
02722
02723 static bool CheckReverseTrain(const Train *v)
02724 {
02725 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02726 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02727 !(v->direction & 1)) {
02728 return false;
02729 }
02730
02731 assert(v->track != TRACK_BIT_NONE);
02732
02733 switch (_settings_game.pf.pathfinder_for_trains) {
02734 case VPF_NPF: return NPFTrainCheckReverse(v);
02735 case VPF_YAPF: return YapfTrainCheckReverse(v);
02736
02737 default: NOT_REACHED();
02738 }
02739 }
02740
02746 TileIndex Train::GetOrderStationLocation(StationID station)
02747 {
02748 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02749
02750 const Station *st = Station::Get(station);
02751 if (!(st->facilities & FACIL_TRAIN)) {
02752
02753 this->IncrementRealOrderIndex();
02754 return 0;
02755 }
02756
02757 return st->xy;
02758 }
02759
02761 void Train::MarkDirty()
02762 {
02763 Train *v = this;
02764 do {
02765 v->UpdateViewport(false, false);
02766 } while ((v = v->Next()) != NULL);
02767
02768
02769 this->CargoChanged();
02770 this->UpdateAcceleration();
02771 }
02772
02780 int Train::UpdateSpeed()
02781 {
02782 switch (_settings_game.vehicle.train_acceleration_model) {
02783 default: NOT_REACHED();
02784 case AM_ORIGINAL:
02785 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->GetCurrentMaxSpeed());
02786
02787 case AM_REALISTIC:
02788 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02789 }
02790 }
02791
02797 static void TrainEnterStation(Train *v, StationID station)
02798 {
02799 v->last_station_visited = station;
02800
02801
02802 Station *st = Station::Get(station);
02803 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02804 st->had_vehicle_of_type |= HVOT_TRAIN;
02805 SetDParam(0, st->index);
02806 AddVehicleNewsItem(
02807 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02808 v->owner == _local_company ? NT_ARRIVAL_COMPANY : NT_ARRIVAL_OTHER,
02809 v->index,
02810 st->index
02811 );
02812 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02813 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02814 }
02815
02816 v->force_proceed = TFP_NONE;
02817 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02818
02819 v->BeginLoading();
02820
02821 TriggerStationRandomisation(st, v->tile, SRT_TRAIN_ARRIVES);
02822 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02823 }
02824
02825
02826 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02827 {
02828 return IsTileOwner(tile, v->owner) &&
02829 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02830 }
02831
02833 struct AccelerationSlowdownParams {
02834 byte small_turn;
02835 byte large_turn;
02836 byte z_up;
02837 byte z_down;
02838 };
02839
02841 static const AccelerationSlowdownParams _accel_slowdown[] = {
02842
02843 {256 / 4, 256 / 2, 256 / 4, 2},
02844 {256 / 4, 256 / 2, 256 / 4, 2},
02845 {0, 256 / 2, 256 / 4, 2},
02846 };
02847
02853 static inline void AffectSpeedByZChange(Train *v, int old_z)
02854 {
02855 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02856
02857 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02858
02859 if (old_z < v->z_pos) {
02860 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02861 } else {
02862 uint16 spd = v->cur_speed + asp->z_down;
02863 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02864 }
02865 }
02866
02867 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02868 {
02869 if (IsTileType(tile, MP_RAILWAY) &&
02870 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02871 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02872 Trackdir trackdir = FindFirstTrackdir(tracks);
02873 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02874
02875 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02876 }
02877 }
02878 return false;
02879 }
02880
02882 void Train::ReserveTrackUnderConsist() const
02883 {
02884 for (const Train *u = this; u != NULL; u = u->Next()) {
02885 switch (u->track) {
02886 case TRACK_BIT_WORMHOLE:
02887 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02888 break;
02889 case TRACK_BIT_DEPOT:
02890 break;
02891 default:
02892 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02893 break;
02894 }
02895 }
02896 }
02897
02904 uint Train::Crash(bool flooded)
02905 {
02906 uint pass = 0;
02907 if (this->IsFrontEngine()) {
02908 pass += 2;
02909
02910
02911
02912 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02913 for (const Train *v = this; v != NULL; v = v->Next()) {
02914 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02915 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02916
02917
02918 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02919 }
02920 }
02921
02922
02923
02924 TileIndex crossing = TrainApproachingCrossingTile(this);
02925 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02926
02927
02928 HideFillingPercent(&this->fill_percent_te_id);
02929 }
02930
02931 pass += this->GroundVehicleBase::Crash(flooded);
02932
02933 this->crash_anim_pos = flooded ? 4000 : 1;
02934 return pass;
02935 }
02936
02943 static uint TrainCrashed(Train *v)
02944 {
02945 uint num = 0;
02946
02947
02948 if (!(v->vehstatus & VS_CRASHED)) {
02949 num = v->Crash();
02950 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02951 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02952 }
02953
02954
02955
02956 v->ReserveTrackUnderConsist();
02957
02958 return num;
02959 }
02960
02962 struct TrainCollideChecker {
02963 Train *v;
02964 uint num;
02965 };
02966
02973 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02974 {
02975 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02976
02977
02978 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02979
02980
02981 if (v->owner != tcc->v->owner) return NULL;
02982
02983
02984 Train *coll = Train::From(v)->First();
02985
02986
02987 if (coll == tcc->v) return NULL;
02988
02989 int x_diff = v->x_pos - tcc->v->x_pos;
02990 int y_diff = v->y_pos - tcc->v->y_pos;
02991
02992
02993
02994
02995
02996 uint hash = (y_diff + 7) | (x_diff + 7);
02997 if (hash & ~15) return NULL;
02998
02999
03000 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
03001 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
03002
03003
03004 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03005
03006
03007 tcc->num += TrainCrashed(tcc->v);
03008 tcc->num += TrainCrashed(coll);
03009
03010 return NULL;
03011 }
03012
03020 static bool CheckTrainCollision(Train *v)
03021 {
03022
03023 if (v->track == TRACK_BIT_DEPOT) return false;
03024
03025 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03026
03027 TrainCollideChecker tcc;
03028 tcc.v = v;
03029 tcc.num = 0;
03030
03031
03032 if (v->track == TRACK_BIT_WORMHOLE) {
03033 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03034 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03035 } else {
03036 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03037 }
03038
03039
03040 if (tcc.num == 0) return false;
03041
03042 SetDParam(0, tcc.num);
03043 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH, NT_ACCIDENT, v->index);
03044
03045 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03046 if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03047 return true;
03048 }
03049
03050 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03051 {
03052 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03053
03054 Train *t = Train::From(v);
03055 DiagDirection exitdir = *(DiagDirection *)data;
03056
03057
03058 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03059
03060 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03061
03062 return t;
03063 }
03064
03072 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03073 {
03074 Train *first = v->First();
03075 Train *prev;
03076 bool direction_changed = false;
03077
03078
03079 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03080 DiagDirection enterdir = DIAGDIR_BEGIN;
03081 bool update_signals_crossing = false;
03082
03083 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03084 if (v->track != TRACK_BIT_WORMHOLE) {
03085
03086 if (gp.old_tile == gp.new_tile) {
03087
03088 if (v->track == TRACK_BIT_DEPOT) {
03089
03090 gp.x = v->x_pos;
03091 gp.y = v->y_pos;
03092 } else {
03093
03094
03095
03096 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03097
03098 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03099 if (HasBit(r, VETS_CANNOT_ENTER)) {
03100 goto invalid_rail;
03101 }
03102 if (HasBit(r, VETS_ENTERED_STATION)) {
03103
03104 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03105 }
03106 }
03107 } else {
03108
03109
03110
03111 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03112 assert(IsValidDiagDirection(enterdir));
03113
03114
03115
03116 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03117 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03118
03119 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03120 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03121
03122 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03123 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03124
03125
03126 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03127 }
03128
03129 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03130
03131
03132
03133 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03134
03135 TrackBits chosen_track;
03136 if (prev == NULL) {
03137
03138
03139 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03140 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03141
03142 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03143
03144
03145
03146
03147 Trackdir dir = FindFirstTrackdir(trackdirbits);
03148 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03149 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03150
03151
03152 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03153 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03154 }
03155 }
03156
03157
03158 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03159
03160 Trackdir i = FindFirstTrackdir(trackdirbits);
03161
03162
03163 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03164
03165 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03166 v->cur_speed = 0;
03167 v->subspeed = 0;
03168 v->progress = 255 - 100;
03169 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03170 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03171 v->cur_speed = 0;
03172 v->subspeed = 0;
03173 v->progress = 255 - 10;
03174 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03175 DiagDirection exitdir = TrackdirToExitdir(i);
03176 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03177
03178 exitdir = ReverseDiagDir(exitdir);
03179
03180
03181 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03182 }
03183 }
03184
03185
03186
03187
03188
03189 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03190 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03191 v->wait_counter = 0;
03192 return false;
03193 }
03194 goto reverse_train_direction;
03195 } else {
03196 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track), false);
03197 }
03198 } else {
03199
03200 if (prev->tile == gp.new_tile) {
03201
03202 if (prev->track == TRACK_BIT_WORMHOLE) {
03203
03204
03205 assert(IsTunnel(prev->tile));
03206 chosen_track = bits;
03207 } else {
03208 chosen_track = prev->track;
03209 }
03210 } else {
03211
03212
03213
03214
03215
03216
03217
03218 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03219 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03220 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03221 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03222 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03223 };
03224 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03225 assert(IsValidDiagDirection(exitdir));
03226 chosen_track = _connecting_track[enterdir][exitdir];
03227 }
03228 chosen_track &= bits;
03229 }
03230
03231
03232 assert(
03233 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03234 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03235 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03236
03237
03238 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03239 gp.x = (gp.x & ~0xF) | b[0];
03240 gp.y = (gp.y & ~0xF) | b[1];
03241 Direction chosen_dir = (Direction)b[2];
03242
03243
03244 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03245 if (HasBit(r, VETS_CANNOT_ENTER)) {
03246 goto invalid_rail;
03247 }
03248
03249 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03250 Track track = FindFirstTrack(chosen_track);
03251 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03252 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03253 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03254 MarkTileDirtyByTile(gp.new_tile);
03255 }
03256
03257
03258 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03259
03260 v->tile = gp.new_tile;
03261
03262 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03263 v->First()->ConsistChanged(true);
03264 }
03265
03266 v->track = chosen_track;
03267 assert(v->track);
03268 }
03269
03270
03271
03272 update_signals_crossing = true;
03273
03274 if (chosen_dir != v->direction) {
03275 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03276 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03277 DirDiff diff = DirDifference(v->direction, chosen_dir);
03278 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03279 }
03280 direction_changed = true;
03281 v->direction = chosen_dir;
03282 }
03283
03284 if (v->IsFrontEngine()) {
03285 v->wait_counter = 0;
03286
03287
03288 TileIndex crossing = TrainApproachingCrossingTile(v);
03289 if (crossing != INVALID_TILE && HasCrossingReservation(crossing) && _settings_client.sound.new_year) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03290
03291
03292 CheckNextTrainTile(v);
03293 }
03294
03295 if (HasBit(r, VETS_ENTERED_STATION)) {
03296
03297 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03298 }
03299 }
03300 } else {
03301 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03302
03303 if (v->IsFrontEngine()) {
03304 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03305 CheckNextTrainTile(v);
03306 }
03307
03308
03309 if (gp.old_tile == gp.new_tile) {
03310 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03311 }
03312 } else {
03313 v->x_pos = gp.x;
03314 v->y_pos = gp.y;
03315 VehicleUpdatePosition(v);
03316 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03317 continue;
03318 }
03319 }
03320
03321
03322 v->UpdateDeltaXY(v->direction);
03323
03324 v->x_pos = gp.x;
03325 v->y_pos = gp.y;
03326 VehicleUpdatePosition(v);
03327
03328
03329 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03330
03331 if (prev == NULL) {
03332
03333 AffectSpeedByZChange(v, old_z);
03334 }
03335
03336 if (update_signals_crossing) {
03337 if (v->IsFrontEngine()) {
03338 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03339
03340
03341
03342
03343
03344
03345
03346
03347 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03348 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03349 !TryPathReserve(v)) {
03350 MarkTrainAsStuck(v);
03351 }
03352 }
03353 }
03354
03355
03356
03357 if (v->Next() == NULL) {
03358 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03359 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03360 }
03361 }
03362
03363
03364 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03365 }
03366
03367 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03368
03369 return true;
03370
03371 invalid_rail:
03372
03373 if (prev != NULL) error("Disconnecting train");
03374
03375 reverse_train_direction:
03376 if (reverse) {
03377 v->wait_counter = 0;
03378 v->cur_speed = 0;
03379 v->subspeed = 0;
03380 ReverseTrainDirection(v);
03381 }
03382
03383 return false;
03384 }
03385
03392 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03393 {
03394 TrackBits *trackbits = (TrackBits *)data;
03395
03396 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03397 TrackBits train_tbits = Train::From(v)->track;
03398 if (train_tbits == TRACK_BIT_WORMHOLE) {
03399
03400 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03401 } else if (train_tbits != TRACK_BIT_DEPOT) {
03402 *trackbits |= train_tbits;
03403 }
03404 }
03405
03406 return NULL;
03407 }
03408
03416 static void DeleteLastWagon(Train *v)
03417 {
03418 Train *first = v->First();
03419
03420
03421
03422
03423 Train *u = v;
03424 for (; v->Next() != NULL; v = v->Next()) u = v;
03425 u->SetNext(NULL);
03426
03427 if (first != v) {
03428
03429 first->ConsistChanged(false);
03430
03431
03432 if (first->track == TRACK_BIT_DEPOT) {
03433 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03434 }
03435 }
03436
03437
03438 TrackBits trackbits = v->track;
03439 TileIndex tile = v->tile;
03440 Owner owner = v->owner;
03441
03442 delete v;
03443 v = NULL;
03444
03445 if (trackbits == TRACK_BIT_WORMHOLE) {
03446
03447 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03448 }
03449
03450 Track track = TrackBitsToTrack(trackbits);
03451 if (HasReservedTracks(tile, trackbits)) {
03452 UnreserveRailTrack(tile, track);
03453
03454
03455 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03456 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03457
03458
03459 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03460 Track t;
03461 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03462 }
03463
03464
03465 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03466
03467
03468 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03469 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03470 } else {
03471 SetSignalsOnBothDir(tile, track, owner);
03472 }
03473 }
03474
03479 static void ChangeTrainDirRandomly(Train *v)
03480 {
03481 static const DirDiff delta[] = {
03482 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03483 };
03484
03485 do {
03486
03487 if (!(v->vehstatus & VS_HIDDEN)) {
03488 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03489 v->UpdateDeltaXY(v->direction);
03490 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03491
03492
03493
03494 if (v->track != TRACK_BIT_WORMHOLE) {
03495 VehicleUpdatePosition(v);
03496 v->UpdateInclination(false, false);
03497 }
03498 }
03499 } while ((v = v->Next()) != NULL);
03500 }
03501
03507 static bool HandleCrashedTrain(Train *v)
03508 {
03509 int state = ++v->crash_anim_pos;
03510
03511 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03512 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03513 }
03514
03515 uint32 r;
03516 if (state <= 200 && Chance16R(1, 7, r)) {
03517 int index = (r * 10 >> 16);
03518
03519 Vehicle *u = v;
03520 do {
03521 if (--index < 0) {
03522 r = Random();
03523
03524 CreateEffectVehicleRel(u,
03525 GB(r, 8, 3) + 2,
03526 GB(r, 16, 3) + 2,
03527 GB(r, 0, 3) + 5,
03528 EV_EXPLOSION_SMALL);
03529 break;
03530 }
03531 } while ((u = u->Next()) != NULL);
03532 }
03533
03534 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03535
03536 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03537 bool ret = v->Next() != NULL;
03538 DeleteLastWagon(v);
03539 return ret;
03540 }
03541
03542 return true;
03543 }
03544
03546 static const uint16 _breakdown_speeds[16] = {
03547 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03548 };
03549
03550
03559 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03560 {
03561
03562 uint x = v->x_pos & 0xF;
03563 uint y = v->y_pos & 0xF;
03564
03565
03566
03567 switch (v->direction) {
03568 case DIR_N : x = ~x + ~y + 25; break;
03569 case DIR_NW: x = y;
03570 case DIR_NE: x = ~x + 16; break;
03571 case DIR_E : x = ~x + y + 9; break;
03572 case DIR_SE: x = y; break;
03573 case DIR_S : x = x + y - 7; break;
03574 case DIR_W : x = ~y + x + 9; break;
03575 default: break;
03576 }
03577
03578
03579
03580
03581
03582
03583 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03584
03585 v->cur_speed = 0;
03586 if (reverse) ReverseTrainDirection(v);
03587 return false;
03588 }
03589
03590
03591 v->vehstatus |= VS_TRAIN_SLOWING;
03592 uint16 break_speed = _breakdown_speeds[x & 0xF];
03593 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03594
03595 return true;
03596 }
03597
03598
03604 static bool TrainCanLeaveTile(const Train *v)
03605 {
03606
03607 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03608
03609 TileIndex tile = v->tile;
03610
03611
03612 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03613 DiagDirection dir = GetTunnelBridgeDirection(tile);
03614 if (DiagDirToDir(dir) == v->direction) return false;
03615 }
03616
03617
03618 if (IsRailDepotTile(tile)) {
03619 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03620 if (DiagDirToDir(dir) == v->direction) return false;
03621 }
03622
03623 return true;
03624 }
03625
03626
03634 static TileIndex TrainApproachingCrossingTile(const Train *v)
03635 {
03636 assert(v->IsFrontEngine());
03637 assert(!(v->vehstatus & VS_CRASHED));
03638
03639 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03640
03641 DiagDirection dir = TrainExitDir(v->direction, v->track);
03642 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03643
03644
03645 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03646 !CheckCompatibleRail(v, tile)) {
03647 return INVALID_TILE;
03648 }
03649
03650 return tile;
03651 }
03652
03653
03661 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03662 {
03663
03664
03665 int t = v->breakdown_ctr;
03666 if (t > 1) {
03667 v->vehstatus |= VS_TRAIN_SLOWING;
03668
03669 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03670 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03671 } else {
03672 v->vehstatus &= ~VS_TRAIN_SLOWING;
03673 }
03674
03675 if (!TrainCanLeaveTile(v)) return true;
03676
03677
03678 DiagDirection dir = TrainExitDir(v->direction, v->track);
03679
03680 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03681
03682
03683 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03684 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03685
03686 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03687 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03688
03689
03690
03691
03692 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03693 if (_settings_game.pf.forbid_90_deg) {
03694 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03695 }
03696
03697
03698 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03699 return TrainApproachingLineEnd(v, false, reverse);
03700 }
03701
03702
03703 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03704
03705
03706 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03707
03708 return true;
03709 }
03710
03711
03712 static bool TrainLocoHandler(Train *v, bool mode)
03713 {
03714
03715 if (v->vehstatus & VS_CRASHED) {
03716 return mode ? true : HandleCrashedTrain(v);
03717 }
03718
03719 if (v->force_proceed != TFP_NONE) {
03720 ClrBit(v->flags, VRF_TRAIN_STUCK);
03721 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03722 }
03723
03724
03725 if (v->HandleBreakdown()) return true;
03726
03727 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03728 ReverseTrainDirection(v);
03729 }
03730
03731
03732 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03733
03734 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03735 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03736 v->wait_counter = 0;
03737 v->cur_speed = 0;
03738 v->subspeed = 0;
03739 ClrBit(v->flags, VRF_LEAVING_STATION);
03740 ReverseTrainDirection(v);
03741 return true;
03742 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03743
03744
03745
03746 DiagDirection dir = TrainExitDir(v->direction, v->track);
03747 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03748
03749 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03750 TryPathReserve(v, true, true);
03751 }
03752 ClrBit(v->flags, VRF_LEAVING_STATION);
03753 }
03754
03755 v->HandleLoading(mode);
03756
03757 if (v->current_order.IsType(OT_LOADING)) return true;
03758
03759 if (CheckTrainStayInDepot(v)) return true;
03760
03761 if (!mode) v->ShowVisualEffect();
03762
03763
03764 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03765 CheckNextTrainTile(v);
03766 }
03767
03768
03769 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03770 ++v->wait_counter;
03771
03772
03773 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03774
03775 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03776 if (!TryPathReserve(v)) {
03777
03778 if (turn_around) ReverseTrainDirection(v);
03779
03780 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03781
03782 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03783 SetDParam(0, v->index);
03784 AddVehicleAdviceNewsItem(STR_NEWS_TRAIN_IS_STUCK, v->index);
03785 }
03786 v->wait_counter = 0;
03787 }
03788
03789 if (v->force_proceed == TFP_NONE) return true;
03790 ClrBit(v->flags, VRF_TRAIN_STUCK);
03791 v->wait_counter = 0;
03792 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03793 }
03794 }
03795
03796 if (v->current_order.IsType(OT_LEAVESTATION)) {
03797 v->current_order.Free();
03798 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03799 return true;
03800 }
03801
03802 int j = v->UpdateSpeed();
03803
03804
03805 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03806
03807 v->force_proceed = TFP_NONE;
03808 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03809 }
03810
03811 int adv_spd = v->GetAdvanceDistance();
03812 if (j < adv_spd) {
03813
03814 if (v->cur_speed == 0) v->SetLastSpeed();
03815 } else {
03816 TrainCheckIfLineEnds(v);
03817
03818 for (;;) {
03819 j -= adv_spd;
03820 TrainController(v, NULL);
03821
03822 if (CheckTrainCollision(v)) break;
03823
03824 adv_spd = v->GetAdvanceDistance();
03825
03826
03827 if (j < adv_spd || v->cur_speed == 0) break;
03828
03829 OrderType order_type = v->current_order.GetType();
03830
03831 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03832 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03833 IsTileType(v->tile, MP_STATION) &&
03834 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03835 ProcessOrders(v);
03836 }
03837 }
03838 v->SetLastSpeed();
03839 }
03840
03841 for (Train *u = v; u != NULL; u = u->Next()) {
03842 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03843
03844 u->UpdateViewport(false, false);
03845 }
03846
03847 if (v->progress == 0) v->progress = j;
03848
03849 return true;
03850 }
03851
03856 Money Train::GetRunningCost() const
03857 {
03858 Money cost = 0;
03859 const Train *v = this;
03860
03861 do {
03862 const Engine *e = v->GetEngine();
03863 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03864
03865 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03866 if (cost_factor == 0) continue;
03867
03868
03869 if (v->IsMultiheaded()) cost_factor /= 2;
03870
03871 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03872 } while ((v = v->GetNextVehicle()) != NULL);
03873
03874 return cost;
03875 }
03876
03881 bool Train::Tick()
03882 {
03883 this->tick_counter++;
03884
03885 if (this->IsFrontEngine()) {
03886 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03887
03888 this->current_order_time++;
03889
03890 if (!TrainLocoHandler(this, false)) return false;
03891
03892 return TrainLocoHandler(this, true);
03893 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03894
03895 if (++this->crash_anim_pos >= 4400) {
03896 delete this;
03897 return false;
03898 }
03899 }
03900
03901 return true;
03902 }
03903
03908 static void CheckIfTrainNeedsService(Train *v)
03909 {
03910 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03911 if (v->IsChainInDepot()) {
03912 VehicleServiceInDepot(v);
03913 return;
03914 }
03915
03916 uint max_penalty;
03917 switch (_settings_game.pf.pathfinder_for_trains) {
03918 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03919 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03920 default: NOT_REACHED();
03921 }
03922
03923 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03924
03925 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03926 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03927
03928
03929
03930 v->current_order.MakeDummy();
03931 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03932 }
03933 return;
03934 }
03935
03936 DepotID depot = GetDepotIndex(tfdd.tile);
03937
03938 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03939 v->current_order.GetDestination() != depot &&
03940 !Chance16(3, 16)) {
03941 return;
03942 }
03943
03944 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03945 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03946 v->dest_tile = tfdd.tile;
03947 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03948 }
03949
03951 void Train::OnNewDay()
03952 {
03953 AgeVehicle(this);
03954
03955 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03956
03957 if (this->IsFrontEngine()) {
03958 CheckVehicleBreakdown(this);
03959
03960 CheckIfTrainNeedsService(this);
03961
03962 CheckOrders(this);
03963
03964
03965 if (this->current_order.IsType(OT_GOTO_STATION)) {
03966 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03967 if (tile != INVALID_TILE) this->dest_tile = tile;
03968 }
03969
03970 if (this->running_ticks != 0) {
03971
03972 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03973
03974 this->profit_this_year -= cost.GetCost();
03975 this->running_ticks = 0;
03976
03977 SubtractMoneyFromCompanyFract(this->owner, cost);
03978
03979 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03980 SetWindowClassesDirty(WC_TRAINS_LIST);
03981 }
03982 }
03983 }
03984
03989 Trackdir Train::GetVehicleTrackdir() const
03990 {
03991 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03992
03993 if (this->track == TRACK_BIT_DEPOT) {
03994
03995 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03996 }
03997
03998 if (this->track == TRACK_BIT_WORMHOLE) {
03999
04000 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
04001 }
04002
04003 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04004 }