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00012 #include "stdafx.h"
00013 #include "error.h"
00014 #include "articulated_vehicles.h"
00015 #include "command_func.h"
00016 #include "pathfinder/npf/npf_func.h"
00017 #include "pathfinder/yapf/yapf.hpp"
00018 #include "news_func.h"
00019 #include "company_func.h"
00020 #include "newgrf_sound.h"
00021 #include "newgrf_text.h"
00022 #include "strings_func.h"
00023 #include "viewport_func.h"
00024 #include "vehicle_func.h"
00025 #include "sound_func.h"
00026 #include "ai/ai.hpp"
00027 #include "game/game.hpp"
00028 #include "newgrf_station.h"
00029 #include "effectvehicle_func.h"
00030 #include "network/network.h"
00031 #include "spritecache.h"
00032 #include "core/random_func.hpp"
00033 #include "company_base.h"
00034 #include "newgrf.h"
00035 #include "order_backup.h"
00036 #include "zoom_func.h"
00037
00038 #include "table/strings.h"
00039 #include "table/train_cmd.h"
00040
00041 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00042 static bool TrainCheckIfLineEnds(Train *v, bool reverse = true);
00043 bool TrainController(Train *v, Vehicle *nomove, bool reverse = true);
00044 static TileIndex TrainApproachingCrossingTile(const Train *v);
00045 static void CheckIfTrainNeedsService(Train *v);
00046 static void CheckNextTrainTile(Train *v);
00047
00048 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00049 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00050
00051
00059 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00060 {
00061 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00062
00063 DiagDirection diagdir = DirToDiagDir(direction);
00064
00065
00066 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00067 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00068 }
00069
00070 return diagdir;
00071 }
00072
00073
00079 byte FreightWagonMult(CargoID cargo)
00080 {
00081 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00082 return _settings_game.vehicle.freight_trains;
00083 }
00084
00086 void CheckTrainsLengths()
00087 {
00088 const Train *v;
00089 bool first = true;
00090
00091 FOR_ALL_TRAINS(v) {
00092 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00093 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00094 if (u->track != TRACK_BIT_DEPOT) {
00095 if ((w->track != TRACK_BIT_DEPOT &&
00096 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->CalcNextVehicleOffset()) ||
00097 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00098 SetDParam(0, v->index);
00099 SetDParam(1, v->owner);
00100 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00101
00102 if (!_networking && first) {
00103 first = false;
00104 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00105 }
00106
00107 break;
00108 }
00109 }
00110 }
00111 }
00112 }
00113 }
00114
00121 void Train::ConsistChanged(bool same_length)
00122 {
00123 uint16 max_speed = UINT16_MAX;
00124
00125 assert(this->IsFrontEngine() || this->IsFreeWagon());
00126
00127 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00128 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00129 this->gcache.cached_total_length = 0;
00130 this->compatible_railtypes = RAILTYPES_NONE;
00131
00132 bool train_can_tilt = true;
00133
00134 for (Train *u = this; u != NULL; u = u->Next()) {
00135 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00136
00137
00138 assert(u->First() == this);
00139
00140
00141 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00142 u->railtype = rvi_u->railtype;
00143
00144 if (u->IsEngine()) first_engine = u->engine_type;
00145
00146
00147 u->tcache.user_def_data = rvi_u->user_def_data;
00148 this->InvalidateNewGRFCache();
00149 u->InvalidateNewGRFCache();
00150 }
00151
00152 for (Train *u = this; u != NULL; u = u->Next()) {
00153
00154 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00155 this->InvalidateNewGRFCache();
00156 u->InvalidateNewGRFCache();
00157 }
00158
00159 for (Train *u = this; u != NULL; u = u->Next()) {
00160 const Engine *e_u = u->GetEngine();
00161 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00162
00163 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00164
00165
00166 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00167
00168
00169 u->colourmap = PAL_NONE;
00170
00171
00172 u->UpdateVisualEffect(true);
00173
00174 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00175 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00176
00177 SetBit(u->flags, VRF_POWEREDWAGON);
00178 } else {
00179 ClrBit(u->flags, VRF_POWEREDWAGON);
00180 }
00181
00182 if (!u->IsArticulatedPart()) {
00183
00184
00185 if (rvi_u->power > 0) {
00186 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00187 }
00188
00189
00190
00191 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00192 u->railtype = RAILTYPE_RAIL;
00193 u->compatible_railtypes |= RAILTYPES_RAIL;
00194 }
00195
00196
00197 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00198 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00199 if (speed != 0) max_speed = min(speed, max_speed);
00200 }
00201 }
00202
00203 u->cargo_cap = e_u->DetermineCapacity(u);
00204 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00205
00206
00207 uint16 veh_len = CALLBACK_FAILED;
00208 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00209
00210 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00211
00212 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00213 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00214 }
00215 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00216
00217 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00218 }
00219 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00220 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00221
00222
00223 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00224
00225
00226 if (!same_length) u->gcache.cached_veh_length = veh_len;
00227
00228 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00229 this->InvalidateNewGRFCache();
00230 u->InvalidateNewGRFCache();
00231 }
00232
00233
00234 this->vcache.cached_max_speed = max_speed;
00235 this->tcache.cached_tilt = train_can_tilt;
00236 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00237
00238
00239 this->CargoChanged();
00240
00241 if (this->IsFrontEngine()) {
00242 this->UpdateAcceleration();
00243 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00244 InvalidateWindowData(WC_VEHICLE_REFIT, this->index, VIWD_CONSIST_CHANGED);
00245 InvalidateWindowData(WC_VEHICLE_ORDERS, this->index, VIWD_CONSIST_CHANGED);
00246 }
00247 }
00248
00259 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00260 {
00261 const Station *st = Station::Get(station_id);
00262 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00263 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00264
00265
00266
00267 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00268 if (v->gcache.cached_total_length >= *station_length) {
00269
00270 osl = OSL_PLATFORM_FAR_END;
00271 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00272 osl = v->current_order.GetStopLocation();
00273 }
00274
00275
00276 int stop;
00277 switch (osl) {
00278 default: NOT_REACHED();
00279
00280 case OSL_PLATFORM_NEAR_END:
00281 stop = v->gcache.cached_total_length;
00282 break;
00283
00284 case OSL_PLATFORM_MIDDLE:
00285 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00286 break;
00287
00288 case OSL_PLATFORM_FAR_END:
00289 stop = *station_length;
00290 break;
00291 }
00292
00293
00294
00295 return stop - (v->gcache.cached_veh_length + 1) / 2;
00296 }
00297
00298
00303 int Train::GetCurveSpeedLimit() const
00304 {
00305 assert(this->First() == this);
00306
00307 static const int absolute_max_speed = UINT16_MAX;
00308 int max_speed = absolute_max_speed;
00309
00310 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00311
00312 int curvecount[2] = {0, 0};
00313
00314
00315 int numcurve = 0;
00316 int sum = 0;
00317 int pos = 0;
00318 int lastpos = -1;
00319 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00320 Direction this_dir = u->direction;
00321 Direction next_dir = u->Next()->direction;
00322
00323 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00324 if (dirdiff == DIRDIFF_SAME) continue;
00325
00326 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00327 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00328 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00329 if (lastpos != -1) {
00330 numcurve++;
00331 sum += pos - lastpos;
00332 if (pos - lastpos == 1 && max_speed > 88) {
00333 max_speed = 88;
00334 }
00335 }
00336 lastpos = pos;
00337 }
00338
00339
00340 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00341 max_speed = 61;
00342 }
00343 }
00344
00345 if (numcurve > 0 && max_speed > 88) {
00346 if (curvecount[0] == 1 && curvecount[1] == 1) {
00347 max_speed = absolute_max_speed;
00348 } else {
00349 sum /= numcurve;
00350 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00351 }
00352 }
00353
00354 if (max_speed != absolute_max_speed) {
00355
00356 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00357 max_speed += (max_speed / 2) * rti->curve_speed;
00358
00359 if (this->tcache.cached_tilt) {
00360
00361 max_speed += max_speed / 5;
00362 }
00363 }
00364
00365 return max_speed;
00366 }
00367
00372 int Train::GetCurrentMaxSpeed() const
00373 {
00374 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return min(this->gcache.cached_max_track_speed, this->current_order.max_speed);
00375
00376 int max_speed = this->tcache.cached_max_curve_speed;
00377 if (IsRailStationTile(this->tile)) {
00378 StationID sid = GetStationIndex(this->tile);
00379 if (this->current_order.ShouldStopAtStation(this, sid)) {
00380 int station_ahead;
00381 int station_length;
00382 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00383
00384
00385
00386 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00387
00388 if (distance_to_go > 0) {
00389 int st_max_speed = 120;
00390
00391 int delta_v = this->cur_speed / (distance_to_go + 1);
00392 if (max_speed > (this->cur_speed - delta_v)) {
00393 st_max_speed = this->cur_speed - (delta_v / 10);
00394 }
00395
00396 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00397 max_speed = min(max_speed, st_max_speed);
00398 }
00399 }
00400 }
00401
00402 for (const Train *u = this; u != NULL; u = u->Next()) {
00403 if (u->track == TRACK_BIT_DEPOT) {
00404 max_speed = min(max_speed, 61);
00405 break;
00406 }
00407
00408
00409 if (u->track == TRACK_BIT_WORMHOLE && !(u->vehstatus & VS_HIDDEN)) {
00410 max_speed = min(max_speed, GetBridgeSpec(GetBridgeType(u->tile))->speed);
00411 }
00412 }
00413
00414 max_speed = min(max_speed, this->current_order.max_speed);
00415 return min(max_speed, this->gcache.cached_max_track_speed);
00416 }
00417
00419 void Train::UpdateAcceleration()
00420 {
00421 assert(this->IsFrontEngine());
00422
00423 uint power = this->gcache.cached_power;
00424 uint weight = this->gcache.cached_weight;
00425 assert(weight != 0);
00426 this->acceleration = Clamp(power / weight * 4, 1, 255);
00427 }
00428
00434 int Train::GetDisplayImageWidth(Point *offset) const
00435 {
00436 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00437 int vehicle_pitch = 0;
00438
00439 const Engine *e = this->GetEngine();
00440 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00441 reference_width = e->GetGRF()->traininfo_vehicle_width;
00442 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00443 }
00444
00445 if (offset != NULL) {
00446 offset->x = reference_width / 2;
00447 offset->y = vehicle_pitch;
00448 }
00449 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00450 }
00451
00452 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00453 {
00454 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00455 }
00456
00463 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00464 {
00465 uint8 spritenum = this->spritenum;
00466 SpriteID sprite;
00467
00468 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00469
00470 if (is_custom_sprite(spritenum)) {
00471 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00472 if (sprite != 0) return sprite;
00473
00474 spritenum = this->GetEngine()->original_image_index;
00475 }
00476
00477 sprite = GetDefaultTrainSprite(spritenum, direction);
00478
00479 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00480
00481 return sprite;
00482 }
00483
00484 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00485 {
00486 const Engine *e = Engine::Get(engine);
00487 Direction dir = rear_head ? DIR_E : DIR_W;
00488 uint8 spritenum = e->u.rail.image_index;
00489
00490 if (is_custom_sprite(spritenum)) {
00491 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00492 if (sprite != 0) {
00493 if (e->GetGRF() != NULL) {
00494 y += e->GetGRF()->traininfo_vehicle_pitch;
00495 }
00496 return sprite;
00497 }
00498
00499 spritenum = Engine::Get(engine)->original_image_index;
00500 }
00501
00502 if (rear_head) spritenum++;
00503
00504 return GetDefaultTrainSprite(spritenum, DIR_W);
00505 }
00506
00507 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00508 {
00509 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00510 int yf = y;
00511 int yr = y;
00512
00513 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00514 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00515 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00516 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00517
00518 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);
00519
00520 DrawSprite(spritef, pal, preferred_x - 14, yf);
00521 DrawSprite(spriter, pal, preferred_x + 15, yr);
00522 } else {
00523 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00524 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00525 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));
00526 DrawSprite(sprite, pal, preferred_x, y);
00527 }
00528 }
00529
00539 void GetTrainSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
00540 {
00541 int y = 0;
00542
00543 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00544 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00545
00546 width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
00547 height = UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI);
00548 xoffs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
00549 yoffs = UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI);
00550
00551 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00552 sprite = GetRailIcon(engine, true, y, image_type);
00553 real_sprite = GetSprite(sprite, ST_NORMAL);
00554
00555
00556 width = TRAININFO_DEFAULT_VEHICLE_WIDTH + UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) + UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI) - xoffs;
00557 height = max<uint>(height, UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI));
00558 xoffs = xoffs - TRAININFO_DEFAULT_VEHICLE_WIDTH / 2;
00559 yoffs = min(yoffs, UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI));
00560 }
00561 }
00562
00571 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00572 {
00573 const RailVehicleInfo *rvi = &e->u.rail;
00574
00575
00576 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00577
00578 if (flags & DC_EXEC) {
00579 Train *v = new Train();
00580 *ret = v;
00581 v->spritenum = rvi->image_index;
00582
00583 v->engine_type = e->index;
00584 v->gcache.first_engine = INVALID_ENGINE;
00585
00586 DiagDirection dir = GetRailDepotDirection(tile);
00587
00588 v->direction = DiagDirToDir(dir);
00589 v->tile = tile;
00590
00591 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00592 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00593
00594 v->x_pos = x;
00595 v->y_pos = y;
00596 v->z_pos = GetSlopePixelZ(x, y);
00597 v->owner = _current_company;
00598 v->track = TRACK_BIT_DEPOT;
00599 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00600
00601 v->SetWagon();
00602
00603 v->SetFreeWagon();
00604 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00605
00606 v->cargo_type = e->GetDefaultCargoType();
00607 v->cargo_cap = rvi->capacity;
00608
00609 v->railtype = rvi->railtype;
00610
00611 v->build_year = _cur_year;
00612 v->cur_image = SPR_IMG_QUERY;
00613 v->random_bits = VehicleRandomBits();
00614
00615 v->group_id = DEFAULT_GROUP;
00616
00617 AddArticulatedParts(v);
00618
00619 _new_vehicle_id = v->index;
00620
00621 VehicleUpdatePosition(v);
00622 v->First()->ConsistChanged(false);
00623 UpdateTrainGroupID(v->First());
00624
00625 CheckConsistencyOfArticulatedVehicle(v);
00626
00627
00628 Train *w;
00629 FOR_ALL_TRAINS(w) {
00630 if (w->tile == tile &&
00631 w->IsFreeWagon() &&
00632 w->engine_type == e->index &&
00633 w->First() != v &&
00634 !(w->vehstatus & VS_CRASHED)) {
00635 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00636 break;
00637 }
00638 }
00639 }
00640
00641 return CommandCost();
00642 }
00643
00645 static void NormalizeTrainVehInDepot(const Train *u)
00646 {
00647 const Train *v;
00648 FOR_ALL_TRAINS(v) {
00649 if (v->IsFreeWagon() && v->tile == u->tile &&
00650 v->track == TRACK_BIT_DEPOT) {
00651 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00652 CMD_MOVE_RAIL_VEHICLE).Failed())
00653 break;
00654 }
00655 }
00656 }
00657
00658 static void AddRearEngineToMultiheadedTrain(Train *v)
00659 {
00660 Train *u = new Train();
00661 v->value >>= 1;
00662 u->value = v->value;
00663 u->direction = v->direction;
00664 u->owner = v->owner;
00665 u->tile = v->tile;
00666 u->x_pos = v->x_pos;
00667 u->y_pos = v->y_pos;
00668 u->z_pos = v->z_pos;
00669 u->track = TRACK_BIT_DEPOT;
00670 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00671 u->spritenum = v->spritenum + 1;
00672 u->cargo_type = v->cargo_type;
00673 u->cargo_subtype = v->cargo_subtype;
00674 u->cargo_cap = v->cargo_cap;
00675 u->railtype = v->railtype;
00676 u->engine_type = v->engine_type;
00677 u->build_year = v->build_year;
00678 u->cur_image = SPR_IMG_QUERY;
00679 u->random_bits = VehicleRandomBits();
00680 v->SetMultiheaded();
00681 u->SetMultiheaded();
00682 v->SetNext(u);
00683 VehicleUpdatePosition(u);
00684
00685
00686 v->other_multiheaded_part = u;
00687 u->other_multiheaded_part = v;
00688 }
00689
00699 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00700 {
00701 const RailVehicleInfo *rvi = &e->u.rail;
00702
00703 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00704
00705
00706
00707 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00708
00709 if (flags & DC_EXEC) {
00710 DiagDirection dir = GetRailDepotDirection(tile);
00711 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00712 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00713
00714 Train *v = new Train();
00715 *ret = v;
00716 v->direction = DiagDirToDir(dir);
00717 v->tile = tile;
00718 v->owner = _current_company;
00719 v->x_pos = x;
00720 v->y_pos = y;
00721 v->z_pos = GetSlopePixelZ(x, y);
00722 v->track = TRACK_BIT_DEPOT;
00723 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00724 v->spritenum = rvi->image_index;
00725 v->cargo_type = e->GetDefaultCargoType();
00726 v->cargo_cap = rvi->capacity;
00727 v->last_station_visited = INVALID_STATION;
00728
00729 v->engine_type = e->index;
00730 v->gcache.first_engine = INVALID_ENGINE;
00731
00732 v->reliability = e->reliability;
00733 v->reliability_spd_dec = e->reliability_spd_dec;
00734 v->max_age = e->GetLifeLengthInDays();
00735
00736 v->railtype = rvi->railtype;
00737 _new_vehicle_id = v->index;
00738
00739 v->SetServiceInterval(Company::Get(_current_company)->settings.vehicle.servint_trains);
00740 v->date_of_last_service = _date;
00741 v->build_year = _cur_year;
00742 v->cur_image = SPR_IMG_QUERY;
00743 v->random_bits = VehicleRandomBits();
00744
00745 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00746 v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);
00747
00748 v->group_id = DEFAULT_GROUP;
00749
00750 v->SetFrontEngine();
00751 v->SetEngine();
00752
00753 VehicleUpdatePosition(v);
00754
00755 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00756 AddRearEngineToMultiheadedTrain(v);
00757 } else {
00758 AddArticulatedParts(v);
00759 }
00760
00761 v->ConsistChanged(false);
00762 UpdateTrainGroupID(v);
00763
00764 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00765 NormalizeTrainVehInDepot(v);
00766 }
00767
00768 CheckConsistencyOfArticulatedVehicle(v);
00769 }
00770
00771 return CommandCost();
00772 }
00773
00774 static Train *FindGoodVehiclePos(const Train *src)
00775 {
00776 EngineID eng = src->engine_type;
00777 TileIndex tile = src->tile;
00778
00779 Train *dst;
00780 FOR_ALL_TRAINS(dst) {
00781 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00782
00783 Train *t = dst;
00784 while (t->engine_type == eng) {
00785 t = t->Next();
00786 if (t == NULL) return dst;
00787 }
00788 }
00789 }
00790
00791 return NULL;
00792 }
00793
00795 typedef SmallVector<Train *, 16> TrainList;
00796
00802 static void MakeTrainBackup(TrainList &list, Train *t)
00803 {
00804 for (; t != NULL; t = t->Next()) *list.Append() = t;
00805 }
00806
00811 static void RestoreTrainBackup(TrainList &list)
00812 {
00813
00814 if (list.Length() == 0) return;
00815
00816 Train *prev = NULL;
00817
00818 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00819 Train *t = *iter;
00820 if (prev != NULL) {
00821 prev->SetNext(t);
00822 } else if (t->Previous() != NULL) {
00823
00824 t->Previous()->SetNext(NULL);
00825 }
00826 prev = t;
00827 }
00828 }
00829
00835 static void RemoveFromConsist(Train *part, bool chain = false)
00836 {
00837 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00838
00839
00840
00841 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00842
00843
00844 tail->SetNext(NULL);
00845 }
00846
00852 static void InsertInConsist(Train *dst, Train *chain)
00853 {
00854
00855 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00856
00857 chain->Last()->SetNext(dst->Next());
00858 dst->SetNext(chain);
00859 }
00860
00866 static void NormaliseDualHeads(Train *t)
00867 {
00868 for (; t != NULL; t = t->GetNextVehicle()) {
00869 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00870
00871
00872 Train *u;
00873 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00874
00875 if (u == t->other_multiheaded_part) continue;
00876
00877
00878 RemoveFromConsist(t->other_multiheaded_part);
00879
00880 InsertInConsist(u, t->other_multiheaded_part);
00881 }
00882 }
00883
00888 static void NormaliseSubtypes(Train *chain)
00889 {
00890
00891 if (chain == NULL) return;
00892
00893
00894 assert(chain->Previous() == NULL);
00895
00896
00897 if (chain->IsWagon()) {
00898 chain->SetFreeWagon();
00899 } else {
00900 assert(chain->IsEngine());
00901 chain->SetFrontEngine();
00902 }
00903
00904
00905 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00906 t->ClearFreeWagon();
00907 t->ClearFrontEngine();
00908 }
00909 }
00910
00920 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00921 {
00922
00923
00924
00925 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00926 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00927 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00928 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00929 return CommandCost();
00930 }
00931
00932
00933
00934 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00935
00936 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00937 }
00938
00944 static CommandCost CheckTrainAttachment(Train *t)
00945 {
00946
00947 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00948
00949
00950
00951 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00952
00953 Train *head = t;
00954 Train *prev = t;
00955
00956
00957 t = t->Next();
00958 prev->SetNext(NULL);
00959
00960
00961 head->InvalidateNewGRFCache();
00962
00963 while (t != NULL) {
00964 allowed_len -= t->gcache.cached_veh_length;
00965
00966 Train *next = t->Next();
00967
00968
00969
00970 t->SetNext(NULL);
00971
00972
00973 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00974
00975 EngineID first_engine = t->gcache.first_engine;
00976 t->gcache.first_engine = INVALID_ENGINE;
00977
00978
00979
00980 t->InvalidateNewGRFCache();
00981
00982 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00983
00984
00985 t->gcache.first_engine = first_engine;
00986
00987
00988 t->InvalidateNewGRFCache();
00989 head->InvalidateNewGRFCache();
00990
00991 if (callback != CALLBACK_FAILED) {
00992
00993 StringID error = STR_NULL;
00994
00995 if (head->GetGRF()->grf_version < 8) {
00996 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00997 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00998 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
00999 } else {
01000 if (callback < 0x400) {
01001 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01002 } else {
01003 switch (callback) {
01004 case 0x400:
01005 case 0x401:
01006 break;
01007
01008 default:
01009 case 0x402:
01010 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01011 break;
01012 }
01013 }
01014 }
01015
01016 if (error != STR_NULL) return_cmd_error(error);
01017 }
01018 }
01019
01020
01021 prev->SetNext(t);
01022 prev = t;
01023 t = next;
01024 }
01025
01026 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01027 return CommandCost();
01028 }
01029
01040 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01041 {
01042
01043 CommandCost ret = CheckTrainAttachment(src);
01044 if (ret.Failed()) return ret;
01045 ret = CheckTrainAttachment(dst);
01046 if (ret.Failed()) return ret;
01047
01048
01049 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01050 }
01051
01060 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01061 {
01062
01063 if (*src_head == *dst_head) {
01064
01065
01066 *dst_head = NULL;
01067 } else if (*dst_head == NULL) {
01068
01069
01070 *dst_head = src;
01071 }
01072
01073 if (src == *src_head) {
01074
01075
01076
01077
01078
01079
01080 *src_head = move_chain ? NULL :
01081 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01082 }
01083
01084
01085
01086
01087 RemoveFromConsist(src, move_chain);
01088 if (*dst_head != src) InsertInConsist(dst, src);
01089
01090
01091
01092 NormaliseDualHeads(*src_head);
01093 NormaliseDualHeads(*dst_head);
01094 }
01095
01101 static void NormaliseTrainHead(Train *head)
01102 {
01103
01104 if (head == NULL) return;
01105
01106
01107 head->ConsistChanged(false);
01108 UpdateTrainGroupID(head);
01109
01110
01111 if (!head->IsFrontEngine()) return;
01112
01113
01114 InvalidateWindowData(WC_VEHICLE_REFIT, head->index, VIWD_CONSIST_CHANGED);
01115 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01116
01117
01118 if (head->unitnumber != 0) return;
01119 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01120 }
01121
01134 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01135 {
01136 VehicleID s = GB(p1, 0, 20);
01137 VehicleID d = GB(p2, 0, 20);
01138 bool move_chain = HasBit(p1, 20);
01139
01140 Train *src = Train::GetIfValid(s);
01141 if (src == NULL) return CMD_ERROR;
01142
01143 CommandCost ret = CheckOwnership(src->owner);
01144 if (ret.Failed()) return ret;
01145
01146
01147 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01148
01149
01150 Train *dst;
01151 if (d == INVALID_VEHICLE) {
01152 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01153 } else {
01154 dst = Train::GetIfValid(d);
01155 if (dst == NULL) return CMD_ERROR;
01156
01157 CommandCost ret = CheckOwnership(dst->owner);
01158 if (ret.Failed()) return ret;
01159
01160
01161 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01162 }
01163
01164
01165 src = src->GetFirstEnginePart();
01166 if (dst != NULL) {
01167 dst = dst->GetFirstEnginePart();
01168 }
01169
01170
01171 if (src == dst) return CommandCost();
01172
01173
01174 Train *src_head = src->First();
01175 Train *dst_head;
01176 if (dst != NULL) {
01177 dst_head = dst->First();
01178 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01179
01180 dst = dst->GetLastEnginePart();
01181 } else {
01182 dst_head = NULL;
01183 }
01184
01185 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01186
01187
01188 if (move_chain && src_head == dst_head) return CommandCost();
01189
01190
01191 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01192
01193
01194 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01195
01196
01197 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01198
01199
01200
01201 TrainList original_src;
01202 TrainList original_dst;
01203
01204 MakeTrainBackup(original_src, src_head);
01205 MakeTrainBackup(original_dst, dst_head);
01206
01207
01208
01209
01210 Train *original_src_head = src_head;
01211 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01212
01213
01214 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01215 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01216
01217
01218 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01219
01220 if ((flags & DC_AUTOREPLACE) == 0) {
01221
01222
01223
01224 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01225 if (ret.Failed()) {
01226
01227 RestoreTrainBackup(original_src);
01228 RestoreTrainBackup(original_dst);
01229 return ret;
01230 }
01231 }
01232
01233
01234 if (flags & DC_EXEC) {
01235
01236 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01237 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01238
01239
01240 NormaliseSubtypes(src_head);
01241 NormaliseSubtypes(dst_head);
01242
01243
01244
01245
01246
01247
01248
01249
01250
01251
01252
01253
01254
01255
01256
01257
01258
01259
01260
01261
01262
01263 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01264
01265 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01266 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01267 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01268 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01269 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01270 SetWindowDirty(WC_COMPANY, _current_company);
01271
01272
01273
01274 DeleteVehicleOrders(src);
01275 RemoveVehicleFromGroup(src);
01276 src->unitnumber = 0;
01277 }
01278
01279
01280
01281 if (original_src_head != src && dst_head == src) {
01282 SetTrainGroupID(src, DEFAULT_GROUP);
01283 SetWindowDirty(WC_COMPANY, _current_company);
01284 }
01285
01286
01287 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01288 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01289
01290
01291 NormaliseTrainHead(src_head);
01292 NormaliseTrainHead(dst_head);
01293
01294 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01295 CheckCargoCapacity(src_head);
01296 CheckCargoCapacity(dst_head);
01297 }
01298
01299
01300 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01301 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01302 } else {
01303
01304 RestoreTrainBackup(original_src);
01305 RestoreTrainBackup(original_dst);
01306 }
01307
01308 return CommandCost();
01309 }
01310
01322 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01323 {
01324
01325 Window *w = NULL;
01326
01327
01328 bool sell_chain = HasBit(data, 0);
01329
01330 Train *v = Train::From(t)->GetFirstEnginePart();
01331 Train *first = v->First();
01332
01333 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01334
01335
01336
01337 TrainList original;
01338 MakeTrainBackup(original, first);
01339
01340
01341 Train *new_head = first;
01342 Train *sell_head = NULL;
01343
01344
01345 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01346
01347
01348 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01349 if (ret.Failed()) {
01350
01351 RestoreTrainBackup(original);
01352 return ret;
01353 }
01354
01355 CommandCost cost(EXPENSES_NEW_VEHICLES);
01356 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01357
01358 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01359 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01360 }
01361
01362
01363 if (flags & DC_EXEC) {
01364
01365 NormaliseSubtypes(new_head);
01366
01367 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01368
01369
01370 new_head->orders.list = first->orders.list;
01371 new_head->AddToShared(first);
01372 DeleteVehicleOrders(first);
01373
01374
01375 new_head->CopyVehicleConfigAndStatistics(first);
01376 GroupStatistics::CountVehicle(new_head, 1);
01377
01378
01379 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01380 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01381 OrderBackup::Backup(v, user);
01382 }
01383
01384
01385 NormaliseTrainHead(new_head);
01386
01387
01388 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01389 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01390
01391
01392 delete sell_head;
01393 } else {
01394
01395 RestoreTrainBackup(original);
01396 }
01397
01398 return cost;
01399 }
01400
01401 void Train::UpdateDeltaXY(Direction direction)
01402 {
01403
01404 this->x_offs = -1;
01405 this->y_offs = -1;
01406 this->x_extent = 3;
01407 this->y_extent = 3;
01408 this->z_extent = 6;
01409 this->x_bb_offs = 0;
01410 this->y_bb_offs = 0;
01411
01412 if (!IsDiagonalDirection(direction)) {
01413 static const int _sign_table[] =
01414 {
01415
01416 -1, -1,
01417 -1, 1,
01418 1, 1,
01419 1, -1,
01420 };
01421
01422 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01423
01424
01425 this->x_offs -= half_shorten * _sign_table[direction];
01426 this->y_offs -= half_shorten * _sign_table[direction + 1];
01427 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01428 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01429 } else {
01430 switch (direction) {
01431
01432
01433 case DIR_NE:
01434 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01435 this->x_extent = this->gcache.cached_veh_length - 1;
01436 this->x_bb_offs = -1;
01437 break;
01438
01439 case DIR_NW:
01440 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01441 this->y_extent = this->gcache.cached_veh_length - 1;
01442 this->y_bb_offs = -1;
01443 break;
01444
01445
01446
01447 case DIR_SW:
01448 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01449 this->x_extent = VEHICLE_LENGTH - 1;
01450 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01451 break;
01452
01453 case DIR_SE:
01454 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01455 this->y_extent = VEHICLE_LENGTH - 1;
01456 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01457 break;
01458
01459 default:
01460 NOT_REACHED();
01461 }
01462 }
01463 }
01464
01469 static void MarkTrainAsStuck(Train *v)
01470 {
01471 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01472
01473 SetBit(v->flags, VRF_TRAIN_STUCK);
01474
01475 v->wait_counter = 0;
01476
01477
01478 v->cur_speed = 0;
01479 v->subspeed = 0;
01480 v->SetLastSpeed();
01481
01482 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01483 }
01484 }
01485
01493 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01494 {
01495 uint16 flag1 = *swap_flag1;
01496 uint16 flag2 = *swap_flag2;
01497
01498
01499 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01500 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01501 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01502 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01503
01504
01505 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01506 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01507 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01508 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01509 }
01510 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01511 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01512 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01513 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01514 }
01515 }
01516
01521 static void UpdateStatusAfterSwap(Train *v)
01522 {
01523
01524 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01525
01526
01527 if (v->track != TRACK_BIT_WORMHOLE) {
01528 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01529 } else {
01530
01531
01532
01533
01534 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01535 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01536 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01537 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01538
01539
01540
01541 VehicleUpdatePosition(v);
01542 v->UpdateInclination(true, true);
01543 return;
01544 }
01545 }
01546 }
01547
01548 VehicleUpdatePosition(v);
01549 v->UpdateViewport(true, true);
01550 }
01551
01558 void ReverseTrainSwapVeh(Train *v, int l, int r)
01559 {
01560 Train *a, *b;
01561
01562
01563 for (a = v; l != 0; l--) a = a->Next();
01564 for (b = v; r != 0; r--) b = b->Next();
01565
01566 if (a != b) {
01567
01568 {
01569 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01570 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01571 a->vehstatus = tmp;
01572 }
01573
01574 Swap(a->track, b->track);
01575 Swap(a->direction, b->direction);
01576 Swap(a->x_pos, b->x_pos);
01577 Swap(a->y_pos, b->y_pos);
01578 Swap(a->tile, b->tile);
01579 Swap(a->z_pos, b->z_pos);
01580
01581 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01582
01583 UpdateStatusAfterSwap(a);
01584 UpdateStatusAfterSwap(b);
01585 } else {
01586
01587
01588
01589 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01590 UpdateStatusAfterSwap(a);
01591 }
01592 }
01593
01594
01600 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01601 {
01602 return (v->type == VEH_TRAIN) ? v : NULL;
01603 }
01604
01605
01612 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01613 {
01614 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01615
01616 Train *t = Train::From(v);
01617 if (!t->IsFrontEngine()) return NULL;
01618
01619 TileIndex tile = *(TileIndex *)data;
01620
01621 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01622
01623 return t;
01624 }
01625
01626
01633 static bool TrainApproachingCrossing(TileIndex tile)
01634 {
01635 assert(IsLevelCrossingTile(tile));
01636
01637 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01638 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01639
01640 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01641
01642 dir = ReverseDiagDir(dir);
01643 tile_from = tile + TileOffsByDiagDir(dir);
01644
01645 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01646 }
01647
01648
01655 void UpdateLevelCrossing(TileIndex tile, bool sound)
01656 {
01657 assert(IsLevelCrossingTile(tile));
01658
01659
01660 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01661
01662 if (new_state != IsCrossingBarred(tile)) {
01663 if (new_state && sound) {
01664 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01665 }
01666 SetCrossingBarred(tile, new_state);
01667 MarkTileDirtyByTile(tile);
01668 }
01669 }
01670
01671
01677 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01678 {
01679 if (!IsCrossingBarred(tile)) {
01680 BarCrossing(tile);
01681 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01682 MarkTileDirtyByTile(tile);
01683 }
01684 }
01685
01686
01692 static void AdvanceWagonsBeforeSwap(Train *v)
01693 {
01694 Train *base = v;
01695 Train *first = base;
01696 Train *last = v->Last();
01697 uint length = CountVehiclesInChain(v);
01698
01699 while (length > 2) {
01700 last = last->Previous();
01701 first = first->Next();
01702
01703 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01704
01705
01706
01707 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01708
01709 base = first;
01710 length -= 2;
01711 }
01712 }
01713
01714
01720 static void AdvanceWagonsAfterSwap(Train *v)
01721 {
01722
01723 Train *dep = v;
01724 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01725 dep = dep->Next();
01726 }
01727
01728 Train *leave = dep->Next();
01729
01730 if (leave != NULL) {
01731
01732 int d = TicksToLeaveDepot(dep);
01733
01734 if (d <= 0) {
01735 leave->vehstatus &= ~VS_HIDDEN;
01736 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01737 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01738 }
01739 } else {
01740 dep = NULL;
01741 }
01742
01743 Train *base = v;
01744 Train *first = base;
01745 Train *last = v->Last();
01746 uint length = CountVehiclesInChain(v);
01747
01748
01749
01750 bool nomove = (dep == NULL);
01751
01752 while (length > 2) {
01753
01754
01755 if (base == dep) break;
01756
01757
01758 if (last == dep) nomove = true;
01759
01760 last = last->Previous();
01761 first = first->Next();
01762
01763 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01764
01765
01766 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01767
01768 base = first;
01769 length -= 2;
01770 }
01771 }
01772
01777 void ReverseTrainDirection(Train *v)
01778 {
01779 if (IsRailDepotTile(v->tile)) {
01780 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01781 }
01782
01783
01784 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01785
01786
01787 TileIndex crossing = TrainApproachingCrossingTile(v);
01788
01789
01790 int r = CountVehiclesInChain(v) - 1;
01791
01792 AdvanceWagonsBeforeSwap(v);
01793
01794
01795 int l = 0;
01796 do {
01797 ReverseTrainSwapVeh(v, l++, r--);
01798 } while (l <= r);
01799
01800 AdvanceWagonsAfterSwap(v);
01801
01802 if (IsRailDepotTile(v->tile)) {
01803 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01804 }
01805
01806 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01807
01808 ClrBit(v->flags, VRF_REVERSING);
01809
01810
01811 v->ConsistChanged(true);
01812
01813
01814 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01815
01816
01817 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01818
01819
01820 crossing = TrainApproachingCrossingTile(v);
01821 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01822
01823
01824 if (v->track == TRACK_BIT_DEPOT) {
01825
01826 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01827 ClrBit(v->flags, VRF_TRAIN_STUCK);
01828 return;
01829 }
01830
01831
01832
01833 DiagDirection dir = TrainExitDir(v->direction, v->track);
01834 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01835
01836 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01837
01838
01839 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01840 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01841 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01842
01843
01844 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01845
01846 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01847 if (TryPathReserve(v, false, first_tile_okay)) {
01848
01849 CheckNextTrainTile(v);
01850 } else if (v->current_order.GetType() != OT_LOADING) {
01851
01852 MarkTrainAsStuck(v);
01853 }
01854 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01855
01856 ClrBit(v->flags, VRF_TRAIN_STUCK);
01857 v->wait_counter = 0;
01858 }
01859 }
01860
01870 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01871 {
01872 Train *v = Train::GetIfValid(p1);
01873 if (v == NULL) return CMD_ERROR;
01874
01875 CommandCost ret = CheckOwnership(v->owner);
01876 if (ret.Failed()) return ret;
01877
01878 if (p2 != 0) {
01879
01880
01881 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01882 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01883 }
01884 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01885
01886 Train *front = v->First();
01887
01888 if (!front->IsStoppedInDepot()) {
01889 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01890 }
01891
01892 if (flags & DC_EXEC) {
01893 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01894
01895 front->ConsistChanged(false);
01896 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01897 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01898 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01899 SetWindowClassesDirty(WC_TRAINS_LIST);
01900 }
01901 } else {
01902
01903 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01904
01905 if (flags & DC_EXEC) {
01906
01907 if (v->current_order.IsType(OT_LOADING)) {
01908 const Vehicle *last = v;
01909 while (last->Next() != NULL) last = last->Next();
01910
01911
01912 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01913 v->LeaveStation();
01914 }
01915 }
01916
01917
01918 v->force_proceed = TFP_NONE;
01919 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01920
01921 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01922 ToggleBit(v->flags, VRF_REVERSING);
01923 } else {
01924 v->cur_speed = 0;
01925 v->SetLastSpeed();
01926 HideFillingPercent(&v->fill_percent_te_id);
01927 ReverseTrainDirection(v);
01928 }
01929 }
01930 }
01931 return CommandCost();
01932 }
01933
01943 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01944 {
01945 Train *t = Train::GetIfValid(p1);
01946 if (t == NULL) return CMD_ERROR;
01947
01948 if (!t->IsPrimaryVehicle()) return CMD_ERROR;
01949
01950 CommandCost ret = CheckOwnership(t->owner);
01951 if (ret.Failed()) return ret;
01952
01953
01954 if (flags & DC_EXEC) {
01955
01956
01957
01958
01959
01960 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsChainInDepot() ? TFP_STUCK : TFP_SIGNAL;
01961 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01962 }
01963
01964 return CommandCost();
01965 }
01966
01974 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01975 {
01976 assert(!(v->vehstatus & VS_CRASHED));
01977
01978 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01979
01980 PBSTileInfo origin = FollowTrainReservation(v);
01981 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01982
01983 switch (_settings_game.pf.pathfinder_for_trains) {
01984 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01985 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01986
01987 default: NOT_REACHED();
01988 }
01989 }
01990
01998 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
01999 {
02000 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02001 if (tfdd.best_length == UINT_MAX) return false;
02002
02003 if (location != NULL) *location = tfdd.tile;
02004 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02005 if (reverse != NULL) *reverse = tfdd.reverse;
02006
02007 return true;
02008 }
02009
02011 void Train::PlayLeaveStationSound() const
02012 {
02013 static const SoundFx sfx[] = {
02014 SND_04_TRAIN,
02015 SND_0A_TRAIN_HORN,
02016 SND_0A_TRAIN_HORN,
02017 SND_47_MAGLEV_2,
02018 SND_41_MAGLEV
02019 };
02020
02021 if (PlayVehicleSound(this, VSE_START)) return;
02022
02023 EngineID engtype = this->engine_type;
02024 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02025 }
02026
02031 static void CheckNextTrainTile(Train *v)
02032 {
02033
02034 if (_settings_game.pf.path_backoff_interval == 255) return;
02035
02036
02037 if (v->track == TRACK_BIT_DEPOT) return;
02038
02039 switch (v->current_order.GetType()) {
02040
02041 case OT_GOTO_DEPOT:
02042 if (v->tile == v->dest_tile) return;
02043 break;
02044
02045 case OT_GOTO_WAYPOINT:
02046
02047 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02048 break;
02049
02050 case OT_NOTHING:
02051 case OT_LEAVESTATION:
02052 case OT_LOADING:
02053
02054 if (v->GetNumOrders() > 0) return;
02055 break;
02056
02057 default:
02058 break;
02059 }
02060
02061 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02062
02063 Trackdir td = v->GetVehicleTrackdir();
02064
02065
02066 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02067 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02068 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02069
02070 CFollowTrackRail ft(v);
02071 if (!ft.Follow(v->tile, td)) return;
02072
02073 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02074
02075 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02076 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02077
02078 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02079 if (_settings_game.pf.forbid_90_deg) {
02080 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02081 }
02082 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02083 }
02084 }
02085 }
02086 }
02087
02093 static bool CheckTrainStayInDepot(Train *v)
02094 {
02095
02096 for (const Train *u = v; u != NULL; u = u->Next()) {
02097 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02098 }
02099
02100
02101 if (v->gcache.cached_power == 0) {
02102 v->vehstatus |= VS_STOPPED;
02103 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02104 return true;
02105 }
02106
02107 SigSegState seg_state;
02108
02109 if (v->force_proceed == TFP_NONE) {
02110
02111 if (++v->wait_counter < 37) {
02112 SetWindowClassesDirty(WC_TRAINS_LIST);
02113 return true;
02114 }
02115
02116 v->wait_counter = 0;
02117
02118 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02119 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02120
02121 SetWindowClassesDirty(WC_TRAINS_LIST);
02122 return true;
02123 }
02124 } else {
02125 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02126 }
02127
02128
02129 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02130
02131 if (HasDepotReservation(v->tile)) return true;
02132 SetDepotReservation(v->tile, true);
02133 VehicleEnterDepot(v);
02134 return true;
02135 }
02136
02137
02138 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02139
02140 SetWindowClassesDirty(WC_TRAINS_LIST);
02141 MarkTrainAsStuck(v);
02142 return true;
02143 }
02144
02145 SetDepotReservation(v->tile, true);
02146 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02147
02148 VehicleServiceInDepot(v);
02149 SetWindowClassesDirty(WC_TRAINS_LIST);
02150 v->PlayLeaveStationSound();
02151
02152 v->track = TRACK_BIT_X;
02153 if (v->direction & 2) v->track = TRACK_BIT_Y;
02154
02155 v->vehstatus &= ~VS_HIDDEN;
02156 v->cur_speed = 0;
02157
02158 v->UpdateViewport(true, true);
02159 VehicleUpdatePosition(v);
02160 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02161 v->UpdateAcceleration();
02162 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02163
02164 return false;
02165 }
02166
02173 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02174 {
02175 DiagDirection dir = TrackdirToExitdir(track_dir);
02176
02177 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02178
02179 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02180 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02181
02182 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02183
02184 SetTunnelBridgeReservation(tile, false);
02185 SetTunnelBridgeReservation(end, false);
02186
02187 if (_settings_client.gui.show_track_reservation) {
02188 MarkTileDirtyByTile(tile);
02189 MarkTileDirtyByTile(end);
02190 }
02191 }
02192 }
02193 } else if (IsRailStationTile(tile)) {
02194 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02195
02196
02197 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02198 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02199 }
02200 } else {
02201
02202 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02203 }
02204 }
02205
02212 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02213 {
02214 assert(v->IsFrontEngine());
02215
02216 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02217 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02218 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02219 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02220
02221
02222 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02223 if (v->track == TRACK_BIT_DEPOT) {
02224
02225 for (const Train *u = v; u != NULL; u = u->Next()) {
02226 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02227 }
02228 }
02229
02230 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02231
02232 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02233 while (ft.Follow(tile, td)) {
02234 tile = ft.m_new_tile;
02235 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02236 td = RemoveFirstTrackdir(&bits);
02237 assert(bits == TRACKDIR_BIT_NONE);
02238
02239 if (!IsValidTrackdir(td)) break;
02240
02241 if (IsTileType(tile, MP_RAILWAY)) {
02242 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02243
02244 UnreserveRailTrack(tile, TrackdirToTrack(td));
02245 break;
02246 }
02247 if (HasPbsSignalOnTrackdir(tile, td)) {
02248 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02249
02250 break;
02251 } else {
02252
02253 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02254 MarkTileDirtyByTile(tile);
02255 }
02256 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02257 break;
02258 }
02259 }
02260
02261
02262 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);
02263
02264 free_tile = true;
02265 }
02266 }
02267
02268 static const byte _initial_tile_subcoord[6][4][3] = {
02269 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02270 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02271 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02272 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02273 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02274 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02275 };
02276
02289 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02290 {
02291 switch (_settings_game.pf.pathfinder_for_trains) {
02292 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02293 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02294
02295 default: NOT_REACHED();
02296 }
02297 }
02298
02304 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02305 {
02306 PBSTileInfo origin = FollowTrainReservation(v);
02307
02308 CFollowTrackRail ft(v);
02309
02310 TileIndex tile = origin.tile;
02311 Trackdir cur_td = origin.trackdir;
02312 while (ft.Follow(tile, cur_td)) {
02313 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02314
02315 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02316 }
02317
02318 if (_settings_game.pf.forbid_90_deg) {
02319 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02320 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02321 }
02322
02323
02324 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02325 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02326
02327
02328
02329
02330
02331
02332 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02333
02334
02335
02336 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02337
02338
02339 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02340 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02341 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02342 }
02343
02344 tile = ft.m_new_tile;
02345 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02346
02347 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02348 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02349 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02350
02351 return PBSTileInfo(tile, cur_td, true);
02352 }
02353
02354 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02355 }
02356
02357 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02358
02359 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02360 }
02361
02362
02363 tile = origin.tile;
02364 cur_td = origin.trackdir;
02365 TileIndex stopped = ft.m_old_tile;
02366 Trackdir stopped_td = ft.m_old_td;
02367 while (tile != stopped || cur_td != stopped_td) {
02368 if (!ft.Follow(tile, cur_td)) break;
02369
02370 if (_settings_game.pf.forbid_90_deg) {
02371 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02372 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02373 }
02374 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02375
02376 tile = ft.m_new_tile;
02377 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02378
02379 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02380 }
02381
02382
02383 return PBSTileInfo();
02384 }
02385
02396 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02397 {
02398 switch (_settings_game.pf.pathfinder_for_trains) {
02399 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02400 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02401
02402 default: NOT_REACHED();
02403 }
02404 }
02405
02407 class VehicleOrderSaver {
02408 private:
02409 Train *v;
02410 Order old_order;
02411 TileIndex old_dest_tile;
02412 StationID old_last_station_visited;
02413 VehicleOrderID index;
02414 bool suppress_implicit_orders;
02415
02416 public:
02417 VehicleOrderSaver(Train *_v) :
02418 v(_v),
02419 old_order(_v->current_order),
02420 old_dest_tile(_v->dest_tile),
02421 old_last_station_visited(_v->last_station_visited),
02422 index(_v->cur_real_order_index),
02423 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02424 {
02425 }
02426
02427 ~VehicleOrderSaver()
02428 {
02429 this->v->current_order = this->old_order;
02430 this->v->dest_tile = this->old_dest_tile;
02431 this->v->last_station_visited = this->old_last_station_visited;
02432 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02433 }
02434
02440 bool SwitchToNextOrder(bool skip_first)
02441 {
02442 if (this->v->GetNumOrders() == 0) return false;
02443
02444 if (skip_first) ++this->index;
02445
02446 int depth = 0;
02447
02448 do {
02449
02450 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02451
02452 Order *order = this->v->GetOrder(this->index);
02453 assert(order != NULL);
02454
02455 switch (order->GetType()) {
02456 case OT_GOTO_DEPOT:
02457
02458 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02459 case OT_GOTO_STATION:
02460 case OT_GOTO_WAYPOINT:
02461 this->v->current_order = *order;
02462 return UpdateOrderDest(this->v, order, 0, true);
02463 case OT_CONDITIONAL: {
02464 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02465 if (next != INVALID_VEH_ORDER_ID) {
02466 depth++;
02467 this->index = next;
02468
02469 continue;
02470 }
02471 break;
02472 }
02473 default:
02474 break;
02475 }
02476
02477
02478 ++this->index;
02479 depth++;
02480 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02481
02482 return false;
02483 }
02484 };
02485
02486
02487 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02488 {
02489 Track best_track = INVALID_TRACK;
02490 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02491 bool changed_signal = false;
02492
02493 assert((tracks & ~TRACK_BIT_MASK) == 0);
02494
02495 if (got_reservation != NULL) *got_reservation = false;
02496
02497
02498 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02499
02500 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02501
02502
02503 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02504 Track track = FindFirstTrack(tracks);
02505
02506 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02507 do_track_reservation = true;
02508 changed_signal = true;
02509 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02510 } else if (!do_track_reservation) {
02511 return track;
02512 }
02513 best_track = track;
02514 }
02515
02516 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02517 DiagDirection dest_enterdir = enterdir;
02518 if (do_track_reservation) {
02519 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02520 if (res_dest.tile == INVALID_TILE) {
02521
02522 if (mark_stuck) MarkTrainAsStuck(v);
02523 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02524 return FindFirstTrack(tracks);
02525 }
02526 if (res_dest.okay) {
02527
02528 if (got_reservation != NULL) *got_reservation = true;
02529 if (changed_signal) MarkTileDirtyByTile(tile);
02530 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02531 return best_track;
02532 }
02533
02534
02535
02536
02537 CheckIfTrainNeedsService(v);
02538 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02539 }
02540
02541
02542 VehicleOrderSaver orders(v);
02543
02544
02545
02546
02547
02548
02549
02550 if (v->current_order.IsType(OT_LEAVESTATION)) {
02551 orders.SwitchToNextOrder(false);
02552 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02553 v->current_order.IsType(OT_GOTO_STATION) ?
02554 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02555 v->tile == v->dest_tile))) {
02556 orders.SwitchToNextOrder(true);
02557 }
02558
02559 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02560
02561 bool path_found = true;
02562 TileIndex new_tile = res_dest.tile;
02563
02564 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02565 if (new_tile == tile) best_track = next_track;
02566 v->HandlePathfindingResult(path_found);
02567 }
02568
02569
02570 if (!do_track_reservation) return best_track;
02571
02572
02573 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02574 if (mark_stuck) MarkTrainAsStuck(v);
02575 FreeTrainTrackReservation(v);
02576 return best_track;
02577 }
02578
02579
02580 if (res_dest.tile == INVALID_TILE) {
02581
02582 PBSTileInfo origin = FollowTrainReservation(v);
02583 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02584 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02585 best_track = FindFirstTrack(res);
02586 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02587 if (got_reservation != NULL) *got_reservation = true;
02588 if (changed_signal) MarkTileDirtyByTile(tile);
02589 } else {
02590 FreeTrainTrackReservation(v);
02591 if (mark_stuck) MarkTrainAsStuck(v);
02592 }
02593 return best_track;
02594 }
02595
02596 if (got_reservation != NULL) *got_reservation = true;
02597
02598
02599 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02600
02601 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02602 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02603 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02604 if (_settings_game.pf.forbid_90_deg) {
02605 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02606 }
02607
02608
02609 if (orders.SwitchToNextOrder(true)) {
02610 PBSTileInfo cur_dest;
02611 bool path_found;
02612 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02613 if (cur_dest.tile != INVALID_TILE) {
02614 res_dest = cur_dest;
02615 if (res_dest.okay) continue;
02616
02617 FreeTrainTrackReservation(v);
02618 if (mark_stuck) MarkTrainAsStuck(v);
02619 if (got_reservation != NULL) *got_reservation = false;
02620 changed_signal = false;
02621 break;
02622 }
02623 }
02624
02625 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02626 FreeTrainTrackReservation(v);
02627 if (mark_stuck) MarkTrainAsStuck(v);
02628 if (got_reservation != NULL) *got_reservation = false;
02629 changed_signal = false;
02630 }
02631 break;
02632 }
02633
02634 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02635
02636 if (changed_signal) MarkTileDirtyByTile(tile);
02637
02638 return best_track;
02639 }
02640
02649 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02650 {
02651 assert(v->IsFrontEngine());
02652
02653
02654
02655
02656 if (v->track == TRACK_BIT_DEPOT) {
02657 if (HasDepotReservation(v->tile)) {
02658 if (mark_as_stuck) MarkTrainAsStuck(v);
02659 return false;
02660 } else {
02661
02662 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02663 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02664 }
02665 }
02666
02667 Vehicle *other_train = NULL;
02668 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02669
02670
02671
02672
02673
02674 if (other_train != NULL && other_train->index != v->index) {
02675 if (mark_as_stuck) MarkTrainAsStuck(v);
02676 return false;
02677 }
02678
02679 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02680
02681 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02682 ClrBit(v->flags, VRF_TRAIN_STUCK);
02683 return true;
02684 }
02685
02686
02687 if (v->track == TRACK_BIT_DEPOT) {
02688 SetDepotReservation(v->tile, true);
02689 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02690 }
02691
02692 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02693 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02694 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02695
02696 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02697
02698 bool res_made = false;
02699 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02700
02701 if (!res_made) {
02702
02703 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02704 return false;
02705 }
02706
02707 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02708 v->wait_counter = 0;
02709 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02710 }
02711 ClrBit(v->flags, VRF_TRAIN_STUCK);
02712 return true;
02713 }
02714
02715
02716 static bool CheckReverseTrain(const Train *v)
02717 {
02718 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02719 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02720 !(v->direction & 1)) {
02721 return false;
02722 }
02723
02724 assert(v->track != TRACK_BIT_NONE);
02725
02726 switch (_settings_game.pf.pathfinder_for_trains) {
02727 case VPF_NPF: return NPFTrainCheckReverse(v);
02728 case VPF_YAPF: return YapfTrainCheckReverse(v);
02729
02730 default: NOT_REACHED();
02731 }
02732 }
02733
02739 TileIndex Train::GetOrderStationLocation(StationID station)
02740 {
02741 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02742
02743 const Station *st = Station::Get(station);
02744 if (!(st->facilities & FACIL_TRAIN)) {
02745
02746 this->IncrementRealOrderIndex();
02747 return 0;
02748 }
02749
02750 return st->xy;
02751 }
02752
02754 void Train::MarkDirty()
02755 {
02756 Train *v = this;
02757 do {
02758 v->UpdateViewport(false, false);
02759 } while ((v = v->Next()) != NULL);
02760
02761
02762 this->CargoChanged();
02763 this->UpdateAcceleration();
02764 }
02765
02773 int Train::UpdateSpeed()
02774 {
02775 switch (_settings_game.vehicle.train_acceleration_model) {
02776 default: NOT_REACHED();
02777 case AM_ORIGINAL:
02778 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, min(this->gcache.cached_max_track_speed, this->current_order.max_speed));
02779
02780 case AM_REALISTIC:
02781 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02782 }
02783 }
02784
02790 static void TrainEnterStation(Train *v, StationID station)
02791 {
02792 v->last_station_visited = station;
02793
02794
02795 Station *st = Station::Get(station);
02796 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02797 st->had_vehicle_of_type |= HVOT_TRAIN;
02798 SetDParam(0, st->index);
02799 AddVehicleNewsItem(
02800 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02801 v->owner == _local_company ? NT_ARRIVAL_COMPANY : NT_ARRIVAL_OTHER,
02802 v->index,
02803 st->index
02804 );
02805 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02806 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02807 }
02808
02809 v->force_proceed = TFP_NONE;
02810 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02811
02812 v->BeginLoading();
02813
02814 TriggerStationRandomisation(st, v->tile, SRT_TRAIN_ARRIVES);
02815 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02816 }
02817
02818
02819 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02820 {
02821 return IsTileOwner(tile, v->owner) &&
02822 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02823 }
02824
02826 struct AccelerationSlowdownParams {
02827 byte small_turn;
02828 byte large_turn;
02829 byte z_up;
02830 byte z_down;
02831 };
02832
02834 static const AccelerationSlowdownParams _accel_slowdown[] = {
02835
02836 {256 / 4, 256 / 2, 256 / 4, 2},
02837 {256 / 4, 256 / 2, 256 / 4, 2},
02838 {0, 256 / 2, 256 / 4, 2},
02839 };
02840
02846 static inline void AffectSpeedByZChange(Train *v, int old_z)
02847 {
02848 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02849
02850 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02851
02852 if (old_z < v->z_pos) {
02853 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02854 } else {
02855 uint16 spd = v->cur_speed + asp->z_down;
02856 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02857 }
02858 }
02859
02860 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02861 {
02862 if (IsTileType(tile, MP_RAILWAY) &&
02863 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02864 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02865 Trackdir trackdir = FindFirstTrackdir(tracks);
02866 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02867
02868 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02869 }
02870 }
02871 return false;
02872 }
02873
02875 void Train::ReserveTrackUnderConsist() const
02876 {
02877 for (const Train *u = this; u != NULL; u = u->Next()) {
02878 switch (u->track) {
02879 case TRACK_BIT_WORMHOLE:
02880 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02881 break;
02882 case TRACK_BIT_DEPOT:
02883 break;
02884 default:
02885 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02886 break;
02887 }
02888 }
02889 }
02890
02897 uint Train::Crash(bool flooded)
02898 {
02899 uint pass = 0;
02900 if (this->IsFrontEngine()) {
02901 pass += 2;
02902
02903
02904
02905 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02906 for (const Train *v = this; v != NULL; v = v->Next()) {
02907 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02908 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02909
02910
02911 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02912 }
02913 }
02914
02915
02916
02917 TileIndex crossing = TrainApproachingCrossingTile(this);
02918 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02919
02920
02921 HideFillingPercent(&this->fill_percent_te_id);
02922 }
02923
02924 pass += this->GroundVehicleBase::Crash(flooded);
02925
02926 this->crash_anim_pos = flooded ? 4000 : 1;
02927 return pass;
02928 }
02929
02936 static uint TrainCrashed(Train *v)
02937 {
02938 uint num = 0;
02939
02940
02941 if (!(v->vehstatus & VS_CRASHED)) {
02942 num = v->Crash();
02943 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02944 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02945 }
02946
02947
02948
02949 v->ReserveTrackUnderConsist();
02950
02951 return num;
02952 }
02953
02955 struct TrainCollideChecker {
02956 Train *v;
02957 uint num;
02958 };
02959
02966 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02967 {
02968 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02969
02970
02971 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02972
02973
02974 if (v->owner != tcc->v->owner) return NULL;
02975
02976
02977 Train *coll = Train::From(v)->First();
02978
02979
02980 if (coll == tcc->v) return NULL;
02981
02982 int x_diff = v->x_pos - tcc->v->x_pos;
02983 int y_diff = v->y_pos - tcc->v->y_pos;
02984
02985
02986
02987
02988
02989 uint hash = (y_diff + 7) | (x_diff + 7);
02990 if (hash & ~15) return NULL;
02991
02992
02993 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02994 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
02995
02996
02997 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
02998
02999
03000 tcc->num += TrainCrashed(tcc->v);
03001 tcc->num += TrainCrashed(coll);
03002
03003 return NULL;
03004 }
03005
03013 static bool CheckTrainCollision(Train *v)
03014 {
03015
03016 if (v->track == TRACK_BIT_DEPOT) return false;
03017
03018 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03019
03020 TrainCollideChecker tcc;
03021 tcc.v = v;
03022 tcc.num = 0;
03023
03024
03025 if (v->track == TRACK_BIT_WORMHOLE) {
03026 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03027 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03028 } else {
03029 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03030 }
03031
03032
03033 if (tcc.num == 0) return false;
03034
03035 SetDParam(0, tcc.num);
03036 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH, NT_ACCIDENT, v->index);
03037
03038 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03039 if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03040 return true;
03041 }
03042
03043 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03044 {
03045 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03046
03047 Train *t = Train::From(v);
03048 DiagDirection exitdir = *(DiagDirection *)data;
03049
03050
03051 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03052
03053 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03054
03055 return t;
03056 }
03057
03065 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03066 {
03067 Train *first = v->First();
03068 Train *prev;
03069 bool direction_changed = false;
03070
03071
03072 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03073 DiagDirection enterdir = DIAGDIR_BEGIN;
03074 bool update_signals_crossing = false;
03075
03076 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03077 if (v->track != TRACK_BIT_WORMHOLE) {
03078
03079 if (gp.old_tile == gp.new_tile) {
03080
03081 if (v->track == TRACK_BIT_DEPOT) {
03082
03083 gp.x = v->x_pos;
03084 gp.y = v->y_pos;
03085 } else {
03086
03087
03088
03089 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03090
03091 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03092 if (HasBit(r, VETS_CANNOT_ENTER)) {
03093 goto invalid_rail;
03094 }
03095 if (HasBit(r, VETS_ENTERED_STATION)) {
03096
03097 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03098 }
03099 }
03100 } else {
03101
03102
03103
03104 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03105 assert(IsValidDiagDirection(enterdir));
03106
03107
03108
03109 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03110 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03111
03112 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03113 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03114
03115 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03116 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03117
03118
03119 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03120 }
03121
03122 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03123
03124
03125
03126 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03127
03128 TrackBits chosen_track;
03129 if (prev == NULL) {
03130
03131
03132 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03133 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03134
03135 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03136
03137
03138
03139
03140 Trackdir dir = FindFirstTrackdir(trackdirbits);
03141 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03142 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03143
03144
03145 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03146 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03147 }
03148 }
03149
03150
03151 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03152
03153 Trackdir i = FindFirstTrackdir(trackdirbits);
03154
03155
03156 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03157
03158 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03159 v->cur_speed = 0;
03160 v->subspeed = 0;
03161 v->progress = 255 - 100;
03162 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03163 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03164 v->cur_speed = 0;
03165 v->subspeed = 0;
03166 v->progress = 255 - 10;
03167 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03168 DiagDirection exitdir = TrackdirToExitdir(i);
03169 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03170
03171 exitdir = ReverseDiagDir(exitdir);
03172
03173
03174 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03175 }
03176 }
03177
03178
03179
03180
03181
03182 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03183 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03184 v->wait_counter = 0;
03185 return false;
03186 }
03187 goto reverse_train_direction;
03188 } else {
03189 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track), false);
03190 }
03191 } else {
03192
03193 if (prev->tile == gp.new_tile) {
03194
03195 if (prev->track == TRACK_BIT_WORMHOLE) {
03196
03197
03198 assert(IsTunnel(prev->tile));
03199 chosen_track = bits;
03200 } else {
03201 chosen_track = prev->track;
03202 }
03203 } else {
03204
03205
03206
03207
03208
03209
03210
03211 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03212 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03213 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03214 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03215 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03216 };
03217 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03218 assert(IsValidDiagDirection(exitdir));
03219 chosen_track = _connecting_track[enterdir][exitdir];
03220 }
03221 chosen_track &= bits;
03222 }
03223
03224
03225 assert(
03226 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03227 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03228 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03229
03230
03231 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03232 gp.x = (gp.x & ~0xF) | b[0];
03233 gp.y = (gp.y & ~0xF) | b[1];
03234 Direction chosen_dir = (Direction)b[2];
03235
03236
03237 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03238 if (HasBit(r, VETS_CANNOT_ENTER)) {
03239 goto invalid_rail;
03240 }
03241
03242 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03243 Track track = FindFirstTrack(chosen_track);
03244 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03245 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03246 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03247 MarkTileDirtyByTile(gp.new_tile);
03248 }
03249
03250
03251 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03252
03253 v->tile = gp.new_tile;
03254
03255 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03256 v->First()->ConsistChanged(true);
03257 }
03258
03259 v->track = chosen_track;
03260 assert(v->track);
03261 }
03262
03263
03264
03265 update_signals_crossing = true;
03266
03267 if (chosen_dir != v->direction) {
03268 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03269 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03270 DirDiff diff = DirDifference(v->direction, chosen_dir);
03271 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03272 }
03273 direction_changed = true;
03274 v->direction = chosen_dir;
03275 }
03276
03277 if (v->IsFrontEngine()) {
03278 v->wait_counter = 0;
03279
03280
03281 TileIndex crossing = TrainApproachingCrossingTile(v);
03282 if (crossing != INVALID_TILE && HasCrossingReservation(crossing) && _settings_client.sound.new_year) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03283
03284
03285 CheckNextTrainTile(v);
03286 }
03287
03288 if (HasBit(r, VETS_ENTERED_STATION)) {
03289
03290 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03291 }
03292 }
03293 } else {
03294 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03295
03296 if (v->IsFrontEngine()) {
03297 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03298 CheckNextTrainTile(v);
03299 }
03300
03301
03302 if (gp.old_tile == gp.new_tile) {
03303 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03304 }
03305 } else {
03306 v->x_pos = gp.x;
03307 v->y_pos = gp.y;
03308 VehicleUpdatePosition(v);
03309 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03310 continue;
03311 }
03312 }
03313
03314
03315 v->UpdateDeltaXY(v->direction);
03316
03317 v->x_pos = gp.x;
03318 v->y_pos = gp.y;
03319 VehicleUpdatePosition(v);
03320
03321
03322 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03323
03324 if (prev == NULL) {
03325
03326 AffectSpeedByZChange(v, old_z);
03327 }
03328
03329 if (update_signals_crossing) {
03330 if (v->IsFrontEngine()) {
03331 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03332
03333
03334
03335
03336
03337
03338
03339
03340 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03341 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03342 !TryPathReserve(v)) {
03343 MarkTrainAsStuck(v);
03344 }
03345 }
03346 }
03347
03348
03349
03350 if (v->Next() == NULL) {
03351 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03352 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03353 }
03354 }
03355
03356
03357 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03358 }
03359
03360 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03361
03362 return true;
03363
03364 invalid_rail:
03365
03366 if (prev != NULL) error("Disconnecting train");
03367
03368 reverse_train_direction:
03369 if (reverse) {
03370 v->wait_counter = 0;
03371 v->cur_speed = 0;
03372 v->subspeed = 0;
03373 ReverseTrainDirection(v);
03374 }
03375
03376 return false;
03377 }
03378
03385 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03386 {
03387 TrackBits *trackbits = (TrackBits *)data;
03388
03389 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03390 TrackBits train_tbits = Train::From(v)->track;
03391 if (train_tbits == TRACK_BIT_WORMHOLE) {
03392
03393 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03394 } else if (train_tbits != TRACK_BIT_DEPOT) {
03395 *trackbits |= train_tbits;
03396 }
03397 }
03398
03399 return NULL;
03400 }
03401
03409 static void DeleteLastWagon(Train *v)
03410 {
03411 Train *first = v->First();
03412
03413
03414
03415
03416 Train *u = v;
03417 for (; v->Next() != NULL; v = v->Next()) u = v;
03418 u->SetNext(NULL);
03419
03420 if (first != v) {
03421
03422 first->ConsistChanged(false);
03423
03424
03425 if (first->track == TRACK_BIT_DEPOT) {
03426 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03427 }
03428 }
03429
03430
03431 TrackBits trackbits = v->track;
03432 TileIndex tile = v->tile;
03433 Owner owner = v->owner;
03434
03435 delete v;
03436 v = NULL;
03437
03438 if (trackbits == TRACK_BIT_WORMHOLE) {
03439
03440 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03441 }
03442
03443 Track track = TrackBitsToTrack(trackbits);
03444 if (HasReservedTracks(tile, trackbits)) {
03445 UnreserveRailTrack(tile, track);
03446
03447
03448 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03449 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03450
03451
03452 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03453 Track t;
03454 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03455 }
03456
03457
03458 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03459
03460
03461 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03462 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03463 } else {
03464 SetSignalsOnBothDir(tile, track, owner);
03465 }
03466 }
03467
03472 static void ChangeTrainDirRandomly(Train *v)
03473 {
03474 static const DirDiff delta[] = {
03475 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03476 };
03477
03478 do {
03479
03480 if (!(v->vehstatus & VS_HIDDEN)) {
03481 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03482 v->UpdateDeltaXY(v->direction);
03483 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03484
03485
03486
03487 if (v->track != TRACK_BIT_WORMHOLE) {
03488 VehicleUpdatePosition(v);
03489 v->UpdateInclination(false, false);
03490 }
03491 }
03492 } while ((v = v->Next()) != NULL);
03493 }
03494
03500 static bool HandleCrashedTrain(Train *v)
03501 {
03502 int state = ++v->crash_anim_pos;
03503
03504 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03505 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03506 }
03507
03508 uint32 r;
03509 if (state <= 200 && Chance16R(1, 7, r)) {
03510 int index = (r * 10 >> 16);
03511
03512 Vehicle *u = v;
03513 do {
03514 if (--index < 0) {
03515 r = Random();
03516
03517 CreateEffectVehicleRel(u,
03518 GB(r, 8, 3) + 2,
03519 GB(r, 16, 3) + 2,
03520 GB(r, 0, 3) + 5,
03521 EV_EXPLOSION_SMALL);
03522 break;
03523 }
03524 } while ((u = u->Next()) != NULL);
03525 }
03526
03527 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03528
03529 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03530 bool ret = v->Next() != NULL;
03531 DeleteLastWagon(v);
03532 return ret;
03533 }
03534
03535 return true;
03536 }
03537
03539 static const uint16 _breakdown_speeds[16] = {
03540 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03541 };
03542
03543
03552 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03553 {
03554
03555 uint x = v->x_pos & 0xF;
03556 uint y = v->y_pos & 0xF;
03557
03558
03559
03560 switch (v->direction) {
03561 case DIR_N : x = ~x + ~y + 25; break;
03562 case DIR_NW: x = y;
03563 case DIR_NE: x = ~x + 16; break;
03564 case DIR_E : x = ~x + y + 9; break;
03565 case DIR_SE: x = y; break;
03566 case DIR_S : x = x + y - 7; break;
03567 case DIR_W : x = ~y + x + 9; break;
03568 default: break;
03569 }
03570
03571
03572
03573
03574
03575
03576 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03577
03578 v->cur_speed = 0;
03579 if (reverse) ReverseTrainDirection(v);
03580 return false;
03581 }
03582
03583
03584 v->vehstatus |= VS_TRAIN_SLOWING;
03585 uint16 break_speed = _breakdown_speeds[x & 0xF];
03586 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03587
03588 return true;
03589 }
03590
03591
03597 static bool TrainCanLeaveTile(const Train *v)
03598 {
03599
03600 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03601
03602 TileIndex tile = v->tile;
03603
03604
03605 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03606 DiagDirection dir = GetTunnelBridgeDirection(tile);
03607 if (DiagDirToDir(dir) == v->direction) return false;
03608 }
03609
03610
03611 if (IsRailDepotTile(tile)) {
03612 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03613 if (DiagDirToDir(dir) == v->direction) return false;
03614 }
03615
03616 return true;
03617 }
03618
03619
03627 static TileIndex TrainApproachingCrossingTile(const Train *v)
03628 {
03629 assert(v->IsFrontEngine());
03630 assert(!(v->vehstatus & VS_CRASHED));
03631
03632 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03633
03634 DiagDirection dir = TrainExitDir(v->direction, v->track);
03635 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03636
03637
03638 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03639 !CheckCompatibleRail(v, tile)) {
03640 return INVALID_TILE;
03641 }
03642
03643 return tile;
03644 }
03645
03646
03654 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03655 {
03656
03657
03658 int t = v->breakdown_ctr;
03659 if (t > 1) {
03660 v->vehstatus |= VS_TRAIN_SLOWING;
03661
03662 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03663 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03664 } else {
03665 v->vehstatus &= ~VS_TRAIN_SLOWING;
03666 }
03667
03668 if (!TrainCanLeaveTile(v)) return true;
03669
03670
03671 DiagDirection dir = TrainExitDir(v->direction, v->track);
03672
03673 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03674
03675
03676 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03677 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03678
03679 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03680 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03681
03682
03683
03684
03685 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03686 if (_settings_game.pf.forbid_90_deg) {
03687 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03688 }
03689
03690
03691 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03692 return TrainApproachingLineEnd(v, false, reverse);
03693 }
03694
03695
03696 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03697
03698
03699 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03700
03701 return true;
03702 }
03703
03704
03705 static bool TrainLocoHandler(Train *v, bool mode)
03706 {
03707
03708 if (v->vehstatus & VS_CRASHED) {
03709 return mode ? true : HandleCrashedTrain(v);
03710 }
03711
03712 if (v->force_proceed != TFP_NONE) {
03713 ClrBit(v->flags, VRF_TRAIN_STUCK);
03714 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03715 }
03716
03717
03718 if (v->HandleBreakdown()) return true;
03719
03720 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03721 ReverseTrainDirection(v);
03722 }
03723
03724
03725 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03726
03727 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03728 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03729 v->wait_counter = 0;
03730 v->cur_speed = 0;
03731 v->subspeed = 0;
03732 ClrBit(v->flags, VRF_LEAVING_STATION);
03733 ReverseTrainDirection(v);
03734 return true;
03735 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03736
03737
03738
03739 DiagDirection dir = TrainExitDir(v->direction, v->track);
03740 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03741
03742 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03743 TryPathReserve(v, true, true);
03744 }
03745 ClrBit(v->flags, VRF_LEAVING_STATION);
03746 }
03747
03748 v->HandleLoading(mode);
03749
03750 if (v->current_order.IsType(OT_LOADING)) return true;
03751
03752 if (CheckTrainStayInDepot(v)) return true;
03753
03754 if (!mode) v->ShowVisualEffect();
03755
03756
03757 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03758 CheckNextTrainTile(v);
03759 }
03760
03761
03762 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03763 ++v->wait_counter;
03764
03765
03766 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03767
03768 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03769 if (!TryPathReserve(v)) {
03770
03771 if (turn_around) ReverseTrainDirection(v);
03772
03773 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03774
03775 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03776 SetDParam(0, v->index);
03777 AddVehicleAdviceNewsItem(STR_NEWS_TRAIN_IS_STUCK, v->index);
03778 }
03779 v->wait_counter = 0;
03780 }
03781
03782 if (v->force_proceed == TFP_NONE) return true;
03783 ClrBit(v->flags, VRF_TRAIN_STUCK);
03784 v->wait_counter = 0;
03785 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03786 }
03787 }
03788
03789 if (v->current_order.IsType(OT_LEAVESTATION)) {
03790 v->current_order.Free();
03791 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03792 return true;
03793 }
03794
03795 int j = v->UpdateSpeed();
03796
03797
03798 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03799
03800 v->force_proceed = TFP_NONE;
03801 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03802 }
03803
03804 int adv_spd = v->GetAdvanceDistance();
03805 if (j < adv_spd) {
03806
03807 if (v->cur_speed == 0) v->SetLastSpeed();
03808 } else {
03809 TrainCheckIfLineEnds(v);
03810
03811 for (;;) {
03812 j -= adv_spd;
03813 TrainController(v, NULL);
03814
03815 if (CheckTrainCollision(v)) break;
03816
03817 adv_spd = v->GetAdvanceDistance();
03818
03819
03820 if (j < adv_spd || v->cur_speed == 0) break;
03821
03822 OrderType order_type = v->current_order.GetType();
03823
03824 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03825 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03826 IsTileType(v->tile, MP_STATION) &&
03827 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03828 ProcessOrders(v);
03829 }
03830 }
03831 v->SetLastSpeed();
03832 }
03833
03834 for (Train *u = v; u != NULL; u = u->Next()) {
03835 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03836
03837 u->UpdateViewport(false, false);
03838 }
03839
03840 if (v->progress == 0) v->progress = j;
03841
03842 return true;
03843 }
03844
03849 Money Train::GetRunningCost() const
03850 {
03851 Money cost = 0;
03852 const Train *v = this;
03853
03854 do {
03855 const Engine *e = v->GetEngine();
03856 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03857
03858 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03859 if (cost_factor == 0) continue;
03860
03861
03862 if (v->IsMultiheaded()) cost_factor /= 2;
03863
03864 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03865 } while ((v = v->GetNextVehicle()) != NULL);
03866
03867 return cost;
03868 }
03869
03874 bool Train::Tick()
03875 {
03876 this->tick_counter++;
03877
03878 if (this->IsFrontEngine()) {
03879 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03880
03881 this->current_order_time++;
03882
03883 if (!TrainLocoHandler(this, false)) return false;
03884
03885 return TrainLocoHandler(this, true);
03886 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03887
03888 if (++this->crash_anim_pos >= 4400) {
03889 delete this;
03890 return false;
03891 }
03892 }
03893
03894 return true;
03895 }
03896
03901 static void CheckIfTrainNeedsService(Train *v)
03902 {
03903 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03904 if (v->IsChainInDepot()) {
03905 VehicleServiceInDepot(v);
03906 return;
03907 }
03908
03909 uint max_penalty;
03910 switch (_settings_game.pf.pathfinder_for_trains) {
03911 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03912 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03913 default: NOT_REACHED();
03914 }
03915
03916 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03917
03918 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03919 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03920
03921
03922
03923 v->current_order.MakeDummy();
03924 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03925 }
03926 return;
03927 }
03928
03929 DepotID depot = GetDepotIndex(tfdd.tile);
03930
03931 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03932 v->current_order.GetDestination() != depot &&
03933 !Chance16(3, 16)) {
03934 return;
03935 }
03936
03937 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03938 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03939 v->dest_tile = tfdd.tile;
03940 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03941 }
03942
03944 void Train::OnNewDay()
03945 {
03946 AgeVehicle(this);
03947
03948 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03949
03950 if (this->IsFrontEngine()) {
03951 CheckVehicleBreakdown(this);
03952
03953 CheckIfTrainNeedsService(this);
03954
03955 CheckOrders(this);
03956
03957
03958 if (this->current_order.IsType(OT_GOTO_STATION)) {
03959 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03960 if (tile != INVALID_TILE) this->dest_tile = tile;
03961 }
03962
03963 if (this->running_ticks != 0) {
03964
03965 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03966
03967 this->profit_this_year -= cost.GetCost();
03968 this->running_ticks = 0;
03969
03970 SubtractMoneyFromCompanyFract(this->owner, cost);
03971
03972 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03973 SetWindowClassesDirty(WC_TRAINS_LIST);
03974 }
03975 }
03976 }
03977
03982 Trackdir Train::GetVehicleTrackdir() const
03983 {
03984 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03985
03986 if (this->track == TRACK_BIT_DEPOT) {
03987
03988 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03989 }
03990
03991 if (this->track == TRACK_BIT_WORMHOLE) {
03992
03993 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03994 }
03995
03996 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
03997 }