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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 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00212
00213 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00214 }
00215 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00216 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00217 }
00218 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00219 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00220
00221
00222 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00223
00224
00225 if (!same_length) u->gcache.cached_veh_length = veh_len;
00226
00227 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00228 this->InvalidateNewGRFCache();
00229 u->InvalidateNewGRFCache();
00230 }
00231
00232
00233 this->vcache.cached_max_speed = max_speed;
00234 this->tcache.cached_tilt = train_can_tilt;
00235 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00236
00237
00238 this->CargoChanged();
00239
00240 if (this->IsFrontEngine()) {
00241 this->UpdateAcceleration();
00242 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00243 InvalidateWindowData(WC_VEHICLE_REFIT, this->index);
00244 }
00245 }
00246
00257 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00258 {
00259 const Station *st = Station::Get(station_id);
00260 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00261 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00262
00263
00264
00265 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00266 if (v->gcache.cached_total_length >= *station_length) {
00267
00268 osl = OSL_PLATFORM_FAR_END;
00269 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00270 osl = v->current_order.GetStopLocation();
00271 }
00272
00273
00274 int stop;
00275 switch (osl) {
00276 default: NOT_REACHED();
00277
00278 case OSL_PLATFORM_NEAR_END:
00279 stop = v->gcache.cached_total_length;
00280 break;
00281
00282 case OSL_PLATFORM_MIDDLE:
00283 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00284 break;
00285
00286 case OSL_PLATFORM_FAR_END:
00287 stop = *station_length;
00288 break;
00289 }
00290
00291
00292
00293 return stop - (v->gcache.cached_veh_length + 1) / 2;
00294 }
00295
00296
00301 int Train::GetCurveSpeedLimit() const
00302 {
00303 assert(this->First() == this);
00304
00305 static const int absolute_max_speed = UINT16_MAX;
00306 int max_speed = absolute_max_speed;
00307
00308 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00309
00310 int curvecount[2] = {0, 0};
00311
00312
00313 int numcurve = 0;
00314 int sum = 0;
00315 int pos = 0;
00316 int lastpos = -1;
00317 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00318 Direction this_dir = u->direction;
00319 Direction next_dir = u->Next()->direction;
00320
00321 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00322 if (dirdiff == DIRDIFF_SAME) continue;
00323
00324 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00325 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00326 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00327 if (lastpos != -1) {
00328 numcurve++;
00329 sum += pos - lastpos;
00330 if (pos - lastpos == 1 && max_speed > 88) {
00331 max_speed = 88;
00332 }
00333 }
00334 lastpos = pos;
00335 }
00336
00337
00338 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00339 max_speed = 61;
00340 }
00341 }
00342
00343 if (numcurve > 0 && max_speed > 88) {
00344 if (curvecount[0] == 1 && curvecount[1] == 1) {
00345 max_speed = absolute_max_speed;
00346 } else {
00347 sum /= numcurve;
00348 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00349 }
00350 }
00351
00352 if (max_speed != absolute_max_speed) {
00353
00354 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00355 max_speed += (max_speed / 2) * rti->curve_speed;
00356
00357 if (this->tcache.cached_tilt) {
00358
00359 max_speed += max_speed / 5;
00360 }
00361 }
00362
00363 return max_speed;
00364 }
00365
00370 int Train::GetCurrentMaxSpeed() const
00371 {
00372 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return min(this->gcache.cached_max_track_speed, this->current_order.max_speed);
00373
00374 int max_speed = this->tcache.cached_max_curve_speed;
00375 assert(max_speed == this->GetCurveSpeedLimit());
00376
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 max_speed = min(max_speed, this->current_order.max_speed);
00410 return min(max_speed, this->gcache.cached_max_track_speed);
00411 }
00412
00414 void Train::UpdateAcceleration()
00415 {
00416 assert(this->IsFrontEngine());
00417
00418 uint power = this->gcache.cached_power;
00419 uint weight = this->gcache.cached_weight;
00420 assert(weight != 0);
00421 this->acceleration = Clamp(power / weight * 4, 1, 255);
00422 }
00423
00429 int Train::GetDisplayImageWidth(Point *offset) const
00430 {
00431 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00432 int vehicle_pitch = 0;
00433
00434 const Engine *e = this->GetEngine();
00435 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00436 reference_width = e->GetGRF()->traininfo_vehicle_width;
00437 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00438 }
00439
00440 if (offset != NULL) {
00441 offset->x = reference_width / 2;
00442 offset->y = vehicle_pitch;
00443 }
00444 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00445 }
00446
00447 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00448 {
00449 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00450 }
00451
00458 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00459 {
00460 uint8 spritenum = this->spritenum;
00461 SpriteID sprite;
00462
00463 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00464
00465 if (is_custom_sprite(spritenum)) {
00466 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00467 if (sprite != 0) return sprite;
00468
00469 spritenum = this->GetEngine()->original_image_index;
00470 }
00471
00472 sprite = GetDefaultTrainSprite(spritenum, direction);
00473
00474 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00475
00476 return sprite;
00477 }
00478
00479 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00480 {
00481 const Engine *e = Engine::Get(engine);
00482 Direction dir = rear_head ? DIR_E : DIR_W;
00483 uint8 spritenum = e->u.rail.image_index;
00484
00485 if (is_custom_sprite(spritenum)) {
00486 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00487 if (sprite != 0) {
00488 if (e->GetGRF() != NULL) {
00489 y += e->GetGRF()->traininfo_vehicle_pitch;
00490 }
00491 return sprite;
00492 }
00493
00494 spritenum = Engine::Get(engine)->original_image_index;
00495 }
00496
00497 if (rear_head) spritenum++;
00498
00499 return GetDefaultTrainSprite(spritenum, DIR_W);
00500 }
00501
00502 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00503 {
00504 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00505 int yf = y;
00506 int yr = y;
00507
00508 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00509 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00510 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00511 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00512
00513 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);
00514
00515 DrawSprite(spritef, pal, preferred_x - 14, yf);
00516 DrawSprite(spriter, pal, preferred_x + 15, yr);
00517 } else {
00518 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00519 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00520 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));
00521 DrawSprite(sprite, pal, preferred_x, y);
00522 }
00523 }
00524
00533 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00534 {
00535 const RailVehicleInfo *rvi = &e->u.rail;
00536
00537
00538 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00539
00540 if (flags & DC_EXEC) {
00541 Train *v = new Train();
00542 *ret = v;
00543 v->spritenum = rvi->image_index;
00544
00545 v->engine_type = e->index;
00546 v->gcache.first_engine = INVALID_ENGINE;
00547
00548 DiagDirection dir = GetRailDepotDirection(tile);
00549
00550 v->direction = DiagDirToDir(dir);
00551 v->tile = tile;
00552
00553 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00554 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00555
00556 v->x_pos = x;
00557 v->y_pos = y;
00558 v->z_pos = GetSlopePixelZ(x, y);
00559 v->owner = _current_company;
00560 v->track = TRACK_BIT_DEPOT;
00561 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00562
00563 v->SetWagon();
00564
00565 v->SetFreeWagon();
00566 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00567
00568 v->cargo_type = e->GetDefaultCargoType();
00569 v->cargo_cap = rvi->capacity;
00570
00571 v->railtype = rvi->railtype;
00572
00573 v->build_year = _cur_year;
00574 v->cur_image = SPR_IMG_QUERY;
00575 v->random_bits = VehicleRandomBits();
00576
00577 v->group_id = DEFAULT_GROUP;
00578
00579 AddArticulatedParts(v);
00580
00581 _new_vehicle_id = v->index;
00582
00583 VehicleUpdatePosition(v);
00584 v->First()->ConsistChanged(false);
00585 UpdateTrainGroupID(v->First());
00586
00587 CheckConsistencyOfArticulatedVehicle(v);
00588
00589
00590 Train *w;
00591 FOR_ALL_TRAINS(w) {
00592 if (w->tile == tile &&
00593 w->IsFreeWagon() &&
00594 w->engine_type == e->index &&
00595 w->First() != v &&
00596 !(w->vehstatus & VS_CRASHED)) {
00597 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00598 break;
00599 }
00600 }
00601 }
00602
00603 return CommandCost();
00604 }
00605
00607 static void NormalizeTrainVehInDepot(const Train *u)
00608 {
00609 const Train *v;
00610 FOR_ALL_TRAINS(v) {
00611 if (v->IsFreeWagon() && v->tile == u->tile &&
00612 v->track == TRACK_BIT_DEPOT) {
00613 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00614 CMD_MOVE_RAIL_VEHICLE).Failed())
00615 break;
00616 }
00617 }
00618 }
00619
00620 static void AddRearEngineToMultiheadedTrain(Train *v)
00621 {
00622 Train *u = new Train();
00623 v->value >>= 1;
00624 u->value = v->value;
00625 u->direction = v->direction;
00626 u->owner = v->owner;
00627 u->tile = v->tile;
00628 u->x_pos = v->x_pos;
00629 u->y_pos = v->y_pos;
00630 u->z_pos = v->z_pos;
00631 u->track = TRACK_BIT_DEPOT;
00632 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00633 u->spritenum = v->spritenum + 1;
00634 u->cargo_type = v->cargo_type;
00635 u->cargo_subtype = v->cargo_subtype;
00636 u->cargo_cap = v->cargo_cap;
00637 u->railtype = v->railtype;
00638 u->engine_type = v->engine_type;
00639 u->build_year = v->build_year;
00640 u->cur_image = SPR_IMG_QUERY;
00641 u->random_bits = VehicleRandomBits();
00642 v->SetMultiheaded();
00643 u->SetMultiheaded();
00644 v->SetNext(u);
00645 VehicleUpdatePosition(u);
00646
00647
00648 v->other_multiheaded_part = u;
00649 u->other_multiheaded_part = v;
00650 }
00651
00661 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00662 {
00663 const RailVehicleInfo *rvi = &e->u.rail;
00664
00665 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00666
00667
00668
00669 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00670
00671 if (flags & DC_EXEC) {
00672 DiagDirection dir = GetRailDepotDirection(tile);
00673 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00674 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00675
00676 Train *v = new Train();
00677 *ret = v;
00678 v->direction = DiagDirToDir(dir);
00679 v->tile = tile;
00680 v->owner = _current_company;
00681 v->x_pos = x;
00682 v->y_pos = y;
00683 v->z_pos = GetSlopePixelZ(x, y);
00684 v->track = TRACK_BIT_DEPOT;
00685 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00686 v->spritenum = rvi->image_index;
00687 v->cargo_type = e->GetDefaultCargoType();
00688 v->cargo_cap = rvi->capacity;
00689 v->last_station_visited = INVALID_STATION;
00690 v->last_loading_station = INVALID_STATION;
00691
00692 v->engine_type = e->index;
00693 v->gcache.first_engine = INVALID_ENGINE;
00694
00695 v->reliability = e->reliability;
00696 v->reliability_spd_dec = e->reliability_spd_dec;
00697 v->max_age = e->GetLifeLengthInDays();
00698
00699 v->railtype = rvi->railtype;
00700 _new_vehicle_id = v->index;
00701
00702 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00703 v->date_of_last_service = _date;
00704 v->build_year = _cur_year;
00705 v->cur_image = SPR_IMG_QUERY;
00706 v->random_bits = VehicleRandomBits();
00707
00708 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00709
00710 v->group_id = DEFAULT_GROUP;
00711
00712 v->SetFrontEngine();
00713 v->SetEngine();
00714
00715 VehicleUpdatePosition(v);
00716
00717 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00718 AddRearEngineToMultiheadedTrain(v);
00719 } else {
00720 AddArticulatedParts(v);
00721 }
00722
00723 v->ConsistChanged(false);
00724 UpdateTrainGroupID(v);
00725
00726 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00727 NormalizeTrainVehInDepot(v);
00728 }
00729
00730 CheckConsistencyOfArticulatedVehicle(v);
00731 }
00732
00733 return CommandCost();
00734 }
00735
00740 bool Train::IsInDepot() const
00741 {
00742
00743 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00744
00745
00746 for (const Train *v = this; v != NULL; v = v->Next()) {
00747 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00748 }
00749
00750 return true;
00751 }
00752
00757 bool Train::IsStoppedInDepot() const
00758 {
00759
00760 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00761 return this->IsInDepot();
00762 }
00763
00764 static Train *FindGoodVehiclePos(const Train *src)
00765 {
00766 EngineID eng = src->engine_type;
00767 TileIndex tile = src->tile;
00768
00769 Train *dst;
00770 FOR_ALL_TRAINS(dst) {
00771 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00772
00773 Train *t = dst;
00774 while (t->engine_type == eng) {
00775 t = t->Next();
00776 if (t == NULL) return dst;
00777 }
00778 }
00779 }
00780
00781 return NULL;
00782 }
00783
00785 typedef SmallVector<Train *, 16> TrainList;
00786
00792 static void MakeTrainBackup(TrainList &list, Train *t)
00793 {
00794 for (; t != NULL; t = t->Next()) *list.Append() = t;
00795 }
00796
00801 static void RestoreTrainBackup(TrainList &list)
00802 {
00803
00804 if (list.Length() == 0) return;
00805
00806 Train *prev = NULL;
00807
00808 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00809 Train *t = *iter;
00810 if (prev != NULL) {
00811 prev->SetNext(t);
00812 } else if (t->Previous() != NULL) {
00813
00814 t->Previous()->SetNext(NULL);
00815 }
00816 prev = t;
00817 }
00818 }
00819
00825 static void RemoveFromConsist(Train *part, bool chain = false)
00826 {
00827 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00828
00829
00830
00831 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00832
00833
00834 tail->SetNext(NULL);
00835 }
00836
00842 static void InsertInConsist(Train *dst, Train *chain)
00843 {
00844
00845 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00846
00847 chain->Last()->SetNext(dst->Next());
00848 dst->SetNext(chain);
00849 }
00850
00856 static void NormaliseDualHeads(Train *t)
00857 {
00858 for (; t != NULL; t = t->GetNextVehicle()) {
00859 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00860
00861
00862 Train *u;
00863 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00864
00865 if (u == t->other_multiheaded_part) continue;
00866
00867
00868 RemoveFromConsist(t->other_multiheaded_part);
00869
00870 InsertInConsist(u, t->other_multiheaded_part);
00871 }
00872 }
00873
00878 static void NormaliseSubtypes(Train *chain)
00879 {
00880
00881 if (chain == NULL) return;
00882
00883
00884 assert(chain->Previous() == NULL);
00885
00886
00887 if (chain->IsWagon()) {
00888 chain->SetFreeWagon();
00889 } else {
00890 assert(chain->IsEngine());
00891 chain->SetFrontEngine();
00892 }
00893
00894
00895 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00896 t->ClearFreeWagon();
00897 t->ClearFrontEngine();
00898 }
00899 }
00900
00910 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00911 {
00912
00913
00914
00915 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00916 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00917 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00918 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00919 return CommandCost();
00920 }
00921
00922
00923
00924 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00925
00926 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00927 }
00928
00934 static CommandCost CheckTrainAttachment(Train *t)
00935 {
00936
00937 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00938
00939
00940
00941 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00942
00943 Train *head = t;
00944 Train *prev = t;
00945
00946
00947 t = t->Next();
00948 prev->SetNext(NULL);
00949
00950
00951 head->InvalidateNewGRFCache();
00952
00953 while (t != NULL) {
00954 allowed_len -= t->gcache.cached_veh_length;
00955
00956 Train *next = t->Next();
00957
00958
00959
00960 t->SetNext(NULL);
00961
00962
00963 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00964
00965 EngineID first_engine = t->gcache.first_engine;
00966 t->gcache.first_engine = INVALID_ENGINE;
00967
00968
00969
00970 t->InvalidateNewGRFCache();
00971
00972 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00973
00974
00975 t->gcache.first_engine = first_engine;
00976
00977
00978 t->InvalidateNewGRFCache();
00979 head->InvalidateNewGRFCache();
00980
00981 if (callback != CALLBACK_FAILED) {
00982
00983 StringID error = STR_NULL;
00984
00985 if (head->GetGRF()->grf_version < 8) {
00986 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00987 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00988 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
00989 } else {
00990 if (callback < 0x400) {
00991 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00992 } else {
00993 switch (callback) {
00994 case 0x400:
00995 case 0x401:
00996 break;
00997
00998 default:
00999 case 0x402:
01000 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01001 break;
01002 }
01003 }
01004 }
01005
01006 if (error != STR_NULL) return_cmd_error(error);
01007 }
01008 }
01009
01010
01011 prev->SetNext(t);
01012 prev = t;
01013 t = next;
01014 }
01015
01016 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01017 return CommandCost();
01018 }
01019
01030 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01031 {
01032
01033 CommandCost ret = CheckTrainAttachment(src);
01034 if (ret.Failed()) return ret;
01035 ret = CheckTrainAttachment(dst);
01036 if (ret.Failed()) return ret;
01037
01038
01039 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01040 }
01041
01050 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01051 {
01052
01053 if (*src_head == *dst_head) {
01054
01055
01056 *dst_head = NULL;
01057 } else if (*dst_head == NULL) {
01058
01059
01060 *dst_head = src;
01061 }
01062
01063 if (src == *src_head) {
01064
01065
01066
01067
01068
01069
01070 *src_head = move_chain ? NULL :
01071 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01072 }
01073
01074
01075
01076
01077 RemoveFromConsist(src, move_chain);
01078 if (*dst_head != src) InsertInConsist(dst, src);
01079
01080
01081
01082 NormaliseDualHeads(*src_head);
01083 NormaliseDualHeads(*dst_head);
01084 }
01085
01091 static void NormaliseTrainHead(Train *head)
01092 {
01093
01094 if (head == NULL) return;
01095
01096
01097 head->ConsistChanged(false);
01098 UpdateTrainGroupID(head);
01099
01100
01101 if (!head->IsFrontEngine()) return;
01102
01103
01104 InvalidateWindowData(WC_VEHICLE_REFIT, head->index);
01105 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01106
01107
01108 if (head->unitnumber != 0) return;
01109 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01110 }
01111
01124 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01125 {
01126 VehicleID s = GB(p1, 0, 20);
01127 VehicleID d = GB(p2, 0, 20);
01128 bool move_chain = HasBit(p1, 20);
01129
01130 Train *src = Train::GetIfValid(s);
01131 if (src == NULL) return CMD_ERROR;
01132
01133 CommandCost ret = CheckOwnership(src->owner);
01134 if (ret.Failed()) return ret;
01135
01136
01137 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01138
01139
01140 Train *dst;
01141 if (d == INVALID_VEHICLE) {
01142 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01143 } else {
01144 dst = Train::GetIfValid(d);
01145 if (dst == NULL) return CMD_ERROR;
01146
01147 CommandCost ret = CheckOwnership(dst->owner);
01148 if (ret.Failed()) return ret;
01149
01150
01151 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01152 }
01153
01154
01155 src = src->GetFirstEnginePart();
01156 if (dst != NULL) {
01157 dst = dst->GetFirstEnginePart();
01158 }
01159
01160
01161 if (src == dst) return CommandCost();
01162
01163
01164 Train *src_head = src->First();
01165 Train *dst_head;
01166 if (dst != NULL) {
01167 dst_head = dst->First();
01168 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01169
01170 dst = dst->GetLastEnginePart();
01171 } else {
01172 dst_head = NULL;
01173 }
01174
01175 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01176
01177
01178 if (move_chain && src_head == dst_head) return CommandCost();
01179
01180
01181 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01182
01183
01184 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01185
01186
01187 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01188
01189
01190
01191 TrainList original_src;
01192 TrainList original_dst;
01193
01194 MakeTrainBackup(original_src, src_head);
01195 MakeTrainBackup(original_dst, dst_head);
01196
01197
01198
01199
01200 Train *original_src_head = src_head;
01201 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01202
01203
01204 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01205 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01206
01207
01208 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01209
01210 if ((flags & DC_AUTOREPLACE) == 0) {
01211
01212
01213
01214 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01215 if (ret.Failed()) {
01216
01217 RestoreTrainBackup(original_src);
01218 RestoreTrainBackup(original_dst);
01219 return ret;
01220 }
01221 }
01222
01223
01224 if (flags & DC_EXEC) {
01225
01226 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01227 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01228
01229
01230 NormaliseSubtypes(src_head);
01231 NormaliseSubtypes(dst_head);
01232
01233
01234
01235
01236
01237
01238
01239
01240
01241
01242
01243
01244
01245
01246
01247
01248
01249
01250
01251
01252
01253 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01254
01255 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01256 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01257 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01258 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01259 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01260 SetWindowDirty(WC_COMPANY, _current_company);
01261
01262
01263
01264 DeleteVehicleOrders(src);
01265 RemoveVehicleFromGroup(src);
01266 src->unitnumber = 0;
01267 }
01268
01269
01270
01271 if (original_src_head != src && dst_head == src) {
01272 SetTrainGroupID(src, DEFAULT_GROUP);
01273 SetWindowDirty(WC_COMPANY, _current_company);
01274 }
01275
01276
01277 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01278 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01279
01280
01281 NormaliseTrainHead(src_head);
01282 NormaliseTrainHead(dst_head);
01283
01284 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01285 CheckCargoCapacity(src_head);
01286 CheckCargoCapacity(dst_head);
01287 }
01288
01289
01290 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01291 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01292 } else {
01293
01294 RestoreTrainBackup(original_src);
01295 RestoreTrainBackup(original_dst);
01296 }
01297
01298 return CommandCost();
01299 }
01300
01312 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01313 {
01314
01315 Window *w = NULL;
01316
01317
01318 bool sell_chain = HasBit(data, 0);
01319
01320 Train *v = Train::From(t)->GetFirstEnginePart();
01321 Train *first = v->First();
01322
01323 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01324
01325
01326
01327 TrainList original;
01328 MakeTrainBackup(original, first);
01329
01330
01331 Train *new_head = first;
01332 Train *sell_head = NULL;
01333
01334
01335 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01336
01337
01338 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01339 if (ret.Failed()) {
01340
01341 RestoreTrainBackup(original);
01342 return ret;
01343 }
01344
01345 CommandCost cost(EXPENSES_NEW_VEHICLES);
01346 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01347
01348 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01349 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01350 }
01351
01352
01353 if (flags & DC_EXEC) {
01354
01355 NormaliseSubtypes(new_head);
01356
01357 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01358
01359
01360 new_head->orders.list = first->orders.list;
01361 new_head->AddToShared(first);
01362 DeleteVehicleOrders(first);
01363
01364
01365 new_head->CopyVehicleConfigAndStatistics(first);
01366 GroupStatistics::CountVehicle(new_head, 1);
01367
01368
01369 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01370 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01371 OrderBackup::Backup(v, user);
01372 }
01373
01374
01375 NormaliseTrainHead(new_head);
01376
01377
01378 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01379 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01380
01381
01382 delete sell_head;
01383 } else {
01384
01385 RestoreTrainBackup(original);
01386 }
01387
01388 return cost;
01389 }
01390
01391 void Train::UpdateDeltaXY(Direction direction)
01392 {
01393
01394 this->x_offs = -1;
01395 this->y_offs = -1;
01396 this->x_extent = 3;
01397 this->y_extent = 3;
01398 this->z_extent = 6;
01399 this->x_bb_offs = 0;
01400 this->y_bb_offs = 0;
01401
01402 if (!IsDiagonalDirection(direction)) {
01403 static const int _sign_table[] =
01404 {
01405
01406 -1, -1,
01407 -1, 1,
01408 1, 1,
01409 1, -1,
01410 };
01411
01412 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01413
01414
01415 this->x_offs -= half_shorten * _sign_table[direction];
01416 this->y_offs -= half_shorten * _sign_table[direction + 1];
01417 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01418 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01419 } else {
01420 switch (direction) {
01421
01422
01423 case DIR_NE:
01424 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01425 this->x_extent = this->gcache.cached_veh_length - 1;
01426 this->x_bb_offs = -1;
01427 break;
01428
01429 case DIR_NW:
01430 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01431 this->y_extent = this->gcache.cached_veh_length - 1;
01432 this->y_bb_offs = -1;
01433 break;
01434
01435
01436
01437 case DIR_SW:
01438 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01439 this->x_extent = VEHICLE_LENGTH - 1;
01440 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01441 break;
01442
01443 case DIR_SE:
01444 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01445 this->y_extent = VEHICLE_LENGTH - 1;
01446 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01447 break;
01448
01449 default:
01450 NOT_REACHED();
01451 }
01452 }
01453 }
01454
01459 static void MarkTrainAsStuck(Train *v)
01460 {
01461 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01462
01463 SetBit(v->flags, VRF_TRAIN_STUCK);
01464
01465 v->wait_counter = 0;
01466
01467
01468 v->cur_speed = 0;
01469 v->subspeed = 0;
01470 v->SetLastSpeed();
01471
01472 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01473 }
01474 }
01475
01483 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01484 {
01485 uint16 flag1 = *swap_flag1;
01486 uint16 flag2 = *swap_flag2;
01487
01488
01489 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01490 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01491 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01492 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01493
01494
01495 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01496 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01497 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01498 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01499 }
01500 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01501 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01502 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01503 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01504 }
01505 }
01506
01511 static void UpdateStatusAfterSwap(Train *v)
01512 {
01513
01514 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01515
01516
01517 if (v->track != TRACK_BIT_WORMHOLE) {
01518 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01519 } else {
01520
01521
01522
01523
01524 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01525 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01526 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01527 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01528
01529
01530
01531 VehicleUpdatePosition(v);
01532 v->UpdateInclination(true, true);
01533 return;
01534 }
01535 }
01536 }
01537
01538 VehicleUpdatePosition(v);
01539 v->UpdateViewport(true, true);
01540 }
01541
01548 void ReverseTrainSwapVeh(Train *v, int l, int r)
01549 {
01550 Train *a, *b;
01551
01552
01553 for (a = v; l != 0; l--) a = a->Next();
01554 for (b = v; r != 0; r--) b = b->Next();
01555
01556 if (a != b) {
01557
01558 {
01559 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01560 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01561 a->vehstatus = tmp;
01562 }
01563
01564 Swap(a->track, b->track);
01565 Swap(a->direction, b->direction);
01566 Swap(a->x_pos, b->x_pos);
01567 Swap(a->y_pos, b->y_pos);
01568 Swap(a->tile, b->tile);
01569 Swap(a->z_pos, b->z_pos);
01570
01571 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01572
01573 UpdateStatusAfterSwap(a);
01574 UpdateStatusAfterSwap(b);
01575 } else {
01576
01577
01578
01579 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01580 UpdateStatusAfterSwap(a);
01581 }
01582 }
01583
01584
01590 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01591 {
01592 return (v->type == VEH_TRAIN) ? v : NULL;
01593 }
01594
01595
01602 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01603 {
01604 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01605
01606 Train *t = Train::From(v);
01607 if (!t->IsFrontEngine()) return NULL;
01608
01609 TileIndex tile = *(TileIndex *)data;
01610
01611 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01612
01613 return t;
01614 }
01615
01616
01623 static bool TrainApproachingCrossing(TileIndex tile)
01624 {
01625 assert(IsLevelCrossingTile(tile));
01626
01627 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01628 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01629
01630 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01631
01632 dir = ReverseDiagDir(dir);
01633 tile_from = tile + TileOffsByDiagDir(dir);
01634
01635 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01636 }
01637
01638
01645 void UpdateLevelCrossing(TileIndex tile, bool sound)
01646 {
01647 assert(IsLevelCrossingTile(tile));
01648
01649
01650 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01651
01652 if (new_state != IsCrossingBarred(tile)) {
01653 if (new_state && sound) {
01654 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01655 }
01656 SetCrossingBarred(tile, new_state);
01657 MarkTileDirtyByTile(tile);
01658 }
01659 }
01660
01661
01667 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01668 {
01669 if (!IsCrossingBarred(tile)) {
01670 BarCrossing(tile);
01671 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01672 MarkTileDirtyByTile(tile);
01673 }
01674 }
01675
01676
01682 static void AdvanceWagonsBeforeSwap(Train *v)
01683 {
01684 Train *base = v;
01685 Train *first = base;
01686 Train *last = v->Last();
01687 uint length = CountVehiclesInChain(v);
01688
01689 while (length > 2) {
01690 last = last->Previous();
01691 first = first->Next();
01692
01693 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01694
01695
01696
01697 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01698
01699 base = first;
01700 length -= 2;
01701 }
01702 }
01703
01704
01710 static void AdvanceWagonsAfterSwap(Train *v)
01711 {
01712
01713 Train *dep = v;
01714 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01715 dep = dep->Next();
01716 }
01717
01718 Train *leave = dep->Next();
01719
01720 if (leave != NULL) {
01721
01722 int d = TicksToLeaveDepot(dep);
01723
01724 if (d <= 0) {
01725 leave->vehstatus &= ~VS_HIDDEN;
01726 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01727 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01728 }
01729 } else {
01730 dep = NULL;
01731 }
01732
01733 Train *base = v;
01734 Train *first = base;
01735 Train *last = v->Last();
01736 uint length = CountVehiclesInChain(v);
01737
01738
01739
01740 bool nomove = (dep == NULL);
01741
01742 while (length > 2) {
01743
01744
01745 if (base == dep) break;
01746
01747
01748 if (last == dep) nomove = true;
01749
01750 last = last->Previous();
01751 first = first->Next();
01752
01753 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01754
01755
01756 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01757
01758 base = first;
01759 length -= 2;
01760 }
01761 }
01762
01767 void ReverseTrainDirection(Train *v)
01768 {
01769 if (IsRailDepotTile(v->tile)) {
01770 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01771 }
01772
01773
01774 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01775
01776
01777 TileIndex crossing = TrainApproachingCrossingTile(v);
01778
01779
01780 int r = CountVehiclesInChain(v) - 1;
01781
01782 AdvanceWagonsBeforeSwap(v);
01783
01784
01785 int l = 0;
01786 do {
01787 ReverseTrainSwapVeh(v, l++, r--);
01788 } while (l <= r);
01789
01790 AdvanceWagonsAfterSwap(v);
01791
01792 if (IsRailDepotTile(v->tile)) {
01793 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01794 }
01795
01796 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01797
01798 ClrBit(v->flags, VRF_REVERSING);
01799
01800
01801 v->ConsistChanged(true);
01802
01803
01804 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01805
01806
01807 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01808
01809
01810 crossing = TrainApproachingCrossingTile(v);
01811 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01812
01813
01814 if (v->track == TRACK_BIT_DEPOT) {
01815
01816 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01817 ClrBit(v->flags, VRF_TRAIN_STUCK);
01818 return;
01819 }
01820
01821
01822
01823 DiagDirection dir = TrainExitDir(v->direction, v->track);
01824 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01825
01826 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01827
01828
01829 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01830 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01831 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01832
01833
01834 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01835
01836 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01837 if (TryPathReserve(v, false, first_tile_okay)) {
01838
01839 CheckNextTrainTile(v);
01840 } else if (v->current_order.GetType() != OT_LOADING) {
01841
01842 MarkTrainAsStuck(v);
01843 }
01844 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01845
01846 ClrBit(v->flags, VRF_TRAIN_STUCK);
01847 v->wait_counter = 0;
01848 }
01849 }
01850
01860 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01861 {
01862 Train *v = Train::GetIfValid(p1);
01863 if (v == NULL) return CMD_ERROR;
01864
01865 CommandCost ret = CheckOwnership(v->owner);
01866 if (ret.Failed()) return ret;
01867
01868 if (p2 != 0) {
01869
01870
01871 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01872 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01873 }
01874 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01875
01876 Train *front = v->First();
01877
01878 if (!front->IsStoppedInDepot()) {
01879 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01880 }
01881
01882 if (flags & DC_EXEC) {
01883 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01884
01885 front->ConsistChanged(false);
01886 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01887 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01888 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01889 SetWindowClassesDirty(WC_TRAINS_LIST);
01890 }
01891 } else {
01892
01893 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01894
01895 if (flags & DC_EXEC) {
01896
01897 if (v->current_order.IsType(OT_LOADING)) {
01898 const Vehicle *last = v;
01899 while (last->Next() != NULL) last = last->Next();
01900
01901
01902 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01903 v->LeaveStation();
01904 }
01905 }
01906
01907
01908 v->force_proceed = TFP_NONE;
01909 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01910
01911 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01912 ToggleBit(v->flags, VRF_REVERSING);
01913 } else {
01914 v->cur_speed = 0;
01915 v->SetLastSpeed();
01916 HideFillingPercent(&v->fill_percent_te_id);
01917 ReverseTrainDirection(v);
01918 }
01919 }
01920 }
01921 return CommandCost();
01922 }
01923
01933 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01934 {
01935 Train *t = Train::GetIfValid(p1);
01936 if (t == NULL) return CMD_ERROR;
01937
01938 CommandCost ret = CheckOwnership(t->owner);
01939 if (ret.Failed()) return ret;
01940
01941
01942 if (flags & DC_EXEC) {
01943
01944
01945
01946
01947
01948 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? TFP_STUCK : TFP_SIGNAL;
01949 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01950 }
01951
01952 return CommandCost();
01953 }
01954
01962 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01963 {
01964 assert(!(v->vehstatus & VS_CRASHED));
01965
01966 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01967
01968 PBSTileInfo origin = FollowTrainReservation(v);
01969 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01970
01971 switch (_settings_game.pf.pathfinder_for_trains) {
01972 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01973 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01974
01975 default: NOT_REACHED();
01976 }
01977 }
01978
01986 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
01987 {
01988 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
01989 if (tfdd.best_length == UINT_MAX) return false;
01990
01991 if (location != NULL) *location = tfdd.tile;
01992 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
01993 if (reverse != NULL) *reverse = tfdd.reverse;
01994
01995 return true;
01996 }
01997
01999 void Train::PlayLeaveStationSound() const
02000 {
02001 static const SoundFx sfx[] = {
02002 SND_04_TRAIN,
02003 SND_0A_TRAIN_HORN,
02004 SND_0A_TRAIN_HORN,
02005 SND_47_MAGLEV_2,
02006 SND_41_MAGLEV
02007 };
02008
02009 if (PlayVehicleSound(this, VSE_START)) return;
02010
02011 EngineID engtype = this->engine_type;
02012 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02013 }
02014
02019 static void CheckNextTrainTile(Train *v)
02020 {
02021
02022 if (_settings_game.pf.path_backoff_interval == 255) return;
02023
02024
02025 if (v->track == TRACK_BIT_DEPOT) return;
02026
02027 switch (v->current_order.GetType()) {
02028
02029 case OT_GOTO_DEPOT:
02030 if (v->tile == v->dest_tile) return;
02031 break;
02032
02033 case OT_GOTO_WAYPOINT:
02034
02035 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02036 break;
02037
02038 case OT_NOTHING:
02039 case OT_LEAVESTATION:
02040 case OT_LOADING:
02041
02042 if (v->GetNumOrders() > 0) return;
02043 break;
02044
02045 default:
02046 break;
02047 }
02048
02049 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02050
02051 Trackdir td = v->GetVehicleTrackdir();
02052
02053
02054 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02055 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02056 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02057
02058 CFollowTrackRail ft(v);
02059 if (!ft.Follow(v->tile, td)) return;
02060
02061 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02062
02063 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02064 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02065
02066 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02067 if (_settings_game.pf.forbid_90_deg) {
02068 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02069 }
02070 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02071 }
02072 }
02073 }
02074 }
02075
02081 static bool CheckTrainStayInDepot(Train *v)
02082 {
02083
02084 for (const Train *u = v; u != NULL; u = u->Next()) {
02085 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02086 }
02087
02088
02089 if (v->gcache.cached_power == 0) {
02090 v->vehstatus |= VS_STOPPED;
02091 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02092 return true;
02093 }
02094
02095 SigSegState seg_state;
02096
02097 if (v->force_proceed == TFP_NONE) {
02098
02099 if (++v->wait_counter < 37) {
02100 SetWindowClassesDirty(WC_TRAINS_LIST);
02101 return true;
02102 }
02103
02104 v->wait_counter = 0;
02105
02106 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02107 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02108
02109 SetWindowClassesDirty(WC_TRAINS_LIST);
02110 return true;
02111 }
02112 } else {
02113 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02114 }
02115
02116
02117 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02118
02119 if (HasDepotReservation(v->tile)) return true;
02120 SetDepotReservation(v->tile, true);
02121 VehicleEnterDepot(v);
02122 return true;
02123 }
02124
02125
02126 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02127
02128 SetWindowClassesDirty(WC_TRAINS_LIST);
02129 MarkTrainAsStuck(v);
02130 return true;
02131 }
02132
02133 SetDepotReservation(v->tile, true);
02134 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02135
02136 VehicleServiceInDepot(v);
02137 SetWindowClassesDirty(WC_TRAINS_LIST);
02138 v->PlayLeaveStationSound();
02139
02140 v->track = TRACK_BIT_X;
02141 if (v->direction & 2) v->track = TRACK_BIT_Y;
02142
02143 v->vehstatus &= ~VS_HIDDEN;
02144 v->cur_speed = 0;
02145
02146 v->UpdateViewport(true, true);
02147 VehicleUpdatePosition(v);
02148 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02149 v->UpdateAcceleration();
02150 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02151
02152 return false;
02153 }
02154
02161 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02162 {
02163 DiagDirection dir = TrackdirToExitdir(track_dir);
02164
02165 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02166
02167 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02168 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02169
02170 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02171
02172 SetTunnelBridgeReservation(tile, false);
02173 SetTunnelBridgeReservation(end, false);
02174
02175 if (_settings_client.gui.show_track_reservation) {
02176 MarkTileDirtyByTile(tile);
02177 MarkTileDirtyByTile(end);
02178 }
02179 }
02180 }
02181 } else if (IsRailStationTile(tile)) {
02182 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02183
02184
02185 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02186 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02187 }
02188 } else {
02189
02190 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02191 }
02192 }
02193
02200 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02201 {
02202 assert(v->IsFrontEngine());
02203
02204 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02205 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02206 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02207 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02208
02209
02210 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02211 if (v->track == TRACK_BIT_DEPOT) {
02212
02213 for (const Train *u = v; u != NULL; u = u->Next()) {
02214 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02215 }
02216 }
02217
02218 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02219
02220 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02221 while (ft.Follow(tile, td)) {
02222 tile = ft.m_new_tile;
02223 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02224 td = RemoveFirstTrackdir(&bits);
02225 assert(bits == TRACKDIR_BIT_NONE);
02226
02227 if (!IsValidTrackdir(td)) break;
02228
02229 if (IsTileType(tile, MP_RAILWAY)) {
02230 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02231
02232 UnreserveRailTrack(tile, TrackdirToTrack(td));
02233 break;
02234 }
02235 if (HasPbsSignalOnTrackdir(tile, td)) {
02236 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02237
02238 break;
02239 } else {
02240
02241 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02242 MarkTileDirtyByTile(tile);
02243 }
02244 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02245 break;
02246 }
02247 }
02248
02249
02250 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);
02251
02252 free_tile = true;
02253 }
02254 }
02255
02256 static const byte _initial_tile_subcoord[6][4][3] = {
02257 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02258 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02259 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02260 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02261 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02262 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02263 };
02264
02277 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02278 {
02279 switch (_settings_game.pf.pathfinder_for_trains) {
02280 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02281 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02282
02283 default: NOT_REACHED();
02284 }
02285 }
02286
02292 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02293 {
02294 PBSTileInfo origin = FollowTrainReservation(v);
02295
02296 CFollowTrackRail ft(v);
02297
02298 TileIndex tile = origin.tile;
02299 Trackdir cur_td = origin.trackdir;
02300 while (ft.Follow(tile, cur_td)) {
02301 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02302
02303 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02304 }
02305
02306 if (_settings_game.pf.forbid_90_deg) {
02307 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02308 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02309 }
02310
02311
02312 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02313 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02314
02315
02316
02317
02318
02319
02320 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02321
02322
02323
02324 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02325
02326
02327 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02328 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02329 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02330 }
02331
02332 tile = ft.m_new_tile;
02333 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02334
02335 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02336 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02337 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02338
02339 return PBSTileInfo(tile, cur_td, true);
02340 }
02341
02342 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02343 }
02344
02345 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02346
02347 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02348 }
02349
02350
02351 tile = origin.tile;
02352 cur_td = origin.trackdir;
02353 TileIndex stopped = ft.m_old_tile;
02354 Trackdir stopped_td = ft.m_old_td;
02355 while (tile != stopped || cur_td != stopped_td) {
02356 if (!ft.Follow(tile, cur_td)) break;
02357
02358 if (_settings_game.pf.forbid_90_deg) {
02359 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02360 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02361 }
02362 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02363
02364 tile = ft.m_new_tile;
02365 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02366
02367 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02368 }
02369
02370
02371 return PBSTileInfo();
02372 }
02373
02384 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02385 {
02386 switch (_settings_game.pf.pathfinder_for_trains) {
02387 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02388 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02389
02390 default: NOT_REACHED();
02391 }
02392 }
02393
02395 class VehicleOrderSaver {
02396 private:
02397 Train *v;
02398 Order old_order;
02399 TileIndex old_dest_tile;
02400 StationID old_last_station_visited;
02401 VehicleOrderID index;
02402 bool suppress_implicit_orders;
02403
02404 public:
02405 VehicleOrderSaver(Train *_v) :
02406 v(_v),
02407 old_order(_v->current_order),
02408 old_dest_tile(_v->dest_tile),
02409 old_last_station_visited(_v->last_station_visited),
02410 index(_v->cur_real_order_index),
02411 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02412 {
02413 }
02414
02415 ~VehicleOrderSaver()
02416 {
02417 this->v->current_order = this->old_order;
02418 this->v->dest_tile = this->old_dest_tile;
02419 this->v->last_station_visited = this->old_last_station_visited;
02420 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02421 }
02422
02428 bool SwitchToNextOrder(bool skip_first)
02429 {
02430 if (this->v->GetNumOrders() == 0) return false;
02431
02432 if (skip_first) ++this->index;
02433
02434 int depth = 0;
02435
02436 do {
02437
02438 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02439
02440 Order *order = this->v->GetOrder(this->index);
02441 assert(order != NULL);
02442
02443 switch (order->GetType()) {
02444 case OT_GOTO_DEPOT:
02445
02446 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02447 case OT_GOTO_STATION:
02448 case OT_GOTO_WAYPOINT:
02449 this->v->current_order = *order;
02450 return UpdateOrderDest(this->v, order, 0, true);
02451 case OT_CONDITIONAL: {
02452 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02453 if (next != INVALID_VEH_ORDER_ID) {
02454 depth++;
02455 this->index = next;
02456
02457 continue;
02458 }
02459 break;
02460 }
02461 default:
02462 break;
02463 }
02464
02465
02466 ++this->index;
02467 depth++;
02468 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02469
02470 return false;
02471 }
02472 };
02473
02474
02475 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02476 {
02477 Track best_track = INVALID_TRACK;
02478 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02479 bool changed_signal = false;
02480
02481 assert((tracks & ~TRACK_BIT_MASK) == 0);
02482
02483 if (got_reservation != NULL) *got_reservation = false;
02484
02485
02486 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02487
02488 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02489
02490
02491 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02492 Track track = FindFirstTrack(tracks);
02493
02494 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02495 do_track_reservation = true;
02496 changed_signal = true;
02497 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02498 } else if (!do_track_reservation) {
02499 return track;
02500 }
02501 best_track = track;
02502 }
02503
02504 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02505 DiagDirection dest_enterdir = enterdir;
02506 if (do_track_reservation) {
02507 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02508 if (res_dest.tile == INVALID_TILE) {
02509
02510 if (mark_stuck) MarkTrainAsStuck(v);
02511 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02512 return FindFirstTrack(tracks);
02513 }
02514 if (res_dest.okay) {
02515
02516 if (got_reservation != NULL) *got_reservation = true;
02517 if (changed_signal) MarkTileDirtyByTile(tile);
02518 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02519 return best_track;
02520 }
02521
02522
02523
02524
02525 CheckIfTrainNeedsService(v);
02526 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02527 }
02528
02529
02530 VehicleOrderSaver orders(v);
02531
02532
02533
02534
02535
02536
02537
02538 if (v->current_order.IsType(OT_LEAVESTATION)) {
02539 orders.SwitchToNextOrder(false);
02540 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02541 v->current_order.IsType(OT_GOTO_STATION) ?
02542 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02543 v->tile == v->dest_tile))) {
02544 orders.SwitchToNextOrder(true);
02545 }
02546
02547 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02548
02549 bool path_found = true;
02550 TileIndex new_tile = res_dest.tile;
02551
02552 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02553 if (new_tile == tile) best_track = next_track;
02554 v->HandlePathfindingResult(path_found);
02555 }
02556
02557
02558 if (!do_track_reservation) return best_track;
02559
02560
02561 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02562 if (mark_stuck) MarkTrainAsStuck(v);
02563 FreeTrainTrackReservation(v);
02564 return best_track;
02565 }
02566
02567
02568 if (res_dest.tile == INVALID_TILE) {
02569
02570 PBSTileInfo origin = FollowTrainReservation(v);
02571 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02572 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02573 best_track = FindFirstTrack(res);
02574 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02575 if (got_reservation != NULL) *got_reservation = true;
02576 if (changed_signal) MarkTileDirtyByTile(tile);
02577 } else {
02578 FreeTrainTrackReservation(v);
02579 if (mark_stuck) MarkTrainAsStuck(v);
02580 }
02581 return best_track;
02582 }
02583
02584 if (got_reservation != NULL) *got_reservation = true;
02585
02586
02587 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02588
02589 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02590 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02591 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02592 if (_settings_game.pf.forbid_90_deg) {
02593 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02594 }
02595
02596
02597 if (orders.SwitchToNextOrder(true)) {
02598 PBSTileInfo cur_dest;
02599 bool path_found;
02600 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02601 if (cur_dest.tile != INVALID_TILE) {
02602 res_dest = cur_dest;
02603 if (res_dest.okay) continue;
02604
02605 FreeTrainTrackReservation(v);
02606 if (mark_stuck) MarkTrainAsStuck(v);
02607 if (got_reservation != NULL) *got_reservation = false;
02608 changed_signal = false;
02609 break;
02610 }
02611 }
02612
02613 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02614 FreeTrainTrackReservation(v);
02615 if (mark_stuck) MarkTrainAsStuck(v);
02616 if (got_reservation != NULL) *got_reservation = false;
02617 changed_signal = false;
02618 }
02619 break;
02620 }
02621
02622 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02623
02624 if (changed_signal) MarkTileDirtyByTile(tile);
02625
02626 return best_track;
02627 }
02628
02637 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02638 {
02639 assert(v->IsFrontEngine());
02640
02641
02642
02643
02644 if (v->track == TRACK_BIT_DEPOT) {
02645 if (HasDepotReservation(v->tile)) {
02646 if (mark_as_stuck) MarkTrainAsStuck(v);
02647 return false;
02648 } else {
02649
02650 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02651 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02652 }
02653 }
02654
02655 Vehicle *other_train = NULL;
02656 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02657
02658
02659
02660
02661
02662 if (other_train != NULL && other_train->index != v->index) {
02663 if (mark_as_stuck) MarkTrainAsStuck(v);
02664 return false;
02665 }
02666
02667 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02668
02669 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02670 ClrBit(v->flags, VRF_TRAIN_STUCK);
02671 return true;
02672 }
02673
02674
02675 if (v->track == TRACK_BIT_DEPOT) {
02676 SetDepotReservation(v->tile, true);
02677 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02678 }
02679
02680 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02681 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02682 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02683
02684 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02685
02686 bool res_made = false;
02687 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02688
02689 if (!res_made) {
02690
02691 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02692 return false;
02693 }
02694
02695 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02696 v->wait_counter = 0;
02697 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02698 }
02699 ClrBit(v->flags, VRF_TRAIN_STUCK);
02700 return true;
02701 }
02702
02703
02704 static bool CheckReverseTrain(const Train *v)
02705 {
02706 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02707 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02708 !(v->direction & 1)) {
02709 return false;
02710 }
02711
02712 assert(v->track != TRACK_BIT_NONE);
02713
02714 switch (_settings_game.pf.pathfinder_for_trains) {
02715 case VPF_NPF: return NPFTrainCheckReverse(v);
02716 case VPF_YAPF: return YapfTrainCheckReverse(v);
02717
02718 default: NOT_REACHED();
02719 }
02720 }
02721
02727 TileIndex Train::GetOrderStationLocation(StationID station)
02728 {
02729 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02730
02731 const Station *st = Station::Get(station);
02732 if (!(st->facilities & FACIL_TRAIN)) {
02733
02734 this->IncrementRealOrderIndex();
02735 return 0;
02736 }
02737
02738 return st->xy;
02739 }
02740
02742 void Train::MarkDirty()
02743 {
02744 Train *v = this;
02745 do {
02746 v->UpdateViewport(false, false);
02747 } while ((v = v->Next()) != NULL);
02748
02749
02750 this->CargoChanged();
02751 this->UpdateAcceleration();
02752 }
02753
02761 int Train::UpdateSpeed()
02762 {
02763 switch (_settings_game.vehicle.train_acceleration_model) {
02764 default: NOT_REACHED();
02765 case AM_ORIGINAL:
02766 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, min(this->gcache.cached_max_track_speed, this->current_order.max_speed));
02767
02768 case AM_REALISTIC:
02769 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02770 }
02771 }
02772
02778 static void TrainEnterStation(Train *v, StationID station)
02779 {
02780 v->last_station_visited = station;
02781
02782
02783 Station *st = Station::Get(station);
02784 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02785 st->had_vehicle_of_type |= HVOT_TRAIN;
02786 SetDParam(0, st->index);
02787 AddVehicleNewsItem(
02788 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02789 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
02790 v->index,
02791 st->index
02792 );
02793 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02794 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02795 }
02796
02797 v->force_proceed = TFP_NONE;
02798 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02799
02800 v->BeginLoading();
02801
02802 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02803 }
02804
02805
02806 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02807 {
02808 return IsTileOwner(tile, v->owner) &&
02809 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02810 }
02811
02813 struct AccelerationSlowdownParams {
02814 byte small_turn;
02815 byte large_turn;
02816 byte z_up;
02817 byte z_down;
02818 };
02819
02821 static const AccelerationSlowdownParams _accel_slowdown[] = {
02822
02823 {256 / 4, 256 / 2, 256 / 4, 2},
02824 {256 / 4, 256 / 2, 256 / 4, 2},
02825 {0, 256 / 2, 256 / 4, 2},
02826 };
02827
02833 static inline void AffectSpeedByZChange(Train *v, int old_z)
02834 {
02835 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02836
02837 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02838
02839 if (old_z < v->z_pos) {
02840 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02841 } else {
02842 uint16 spd = v->cur_speed + asp->z_down;
02843 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02844 }
02845 }
02846
02847 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02848 {
02849 if (IsTileType(tile, MP_RAILWAY) &&
02850 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02851 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02852 Trackdir trackdir = FindFirstTrackdir(tracks);
02853 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02854
02855 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02856 }
02857 }
02858 return false;
02859 }
02860
02862 void Train::ReserveTrackUnderConsist() const
02863 {
02864 for (const Train *u = this; u != NULL; u = u->Next()) {
02865 switch (u->track) {
02866 case TRACK_BIT_WORMHOLE:
02867 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02868 break;
02869 case TRACK_BIT_DEPOT:
02870 break;
02871 default:
02872 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02873 break;
02874 }
02875 }
02876 }
02877
02884 uint Train::Crash(bool flooded)
02885 {
02886 uint pass = 0;
02887 if (this->IsFrontEngine()) {
02888 pass += 2;
02889
02890
02891
02892 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02893 for (const Train *v = this; v != NULL; v = v->Next()) {
02894 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02895 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02896
02897
02898 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02899 }
02900 }
02901
02902
02903
02904 TileIndex crossing = TrainApproachingCrossingTile(this);
02905 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02906
02907
02908 HideFillingPercent(&this->fill_percent_te_id);
02909 }
02910
02911 pass += this->GroundVehicleBase::Crash(flooded);
02912
02913 this->crash_anim_pos = flooded ? 4000 : 1;
02914 return pass;
02915 }
02916
02923 static uint TrainCrashed(Train *v)
02924 {
02925 uint num = 0;
02926
02927
02928 if (!(v->vehstatus & VS_CRASHED)) {
02929 num = v->Crash();
02930 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02931 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02932 }
02933
02934
02935
02936 v->ReserveTrackUnderConsist();
02937
02938 return num;
02939 }
02940
02942 struct TrainCollideChecker {
02943 Train *v;
02944 uint num;
02945 };
02946
02953 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02954 {
02955 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02956
02957
02958 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02959
02960
02961 if (v->owner != tcc->v->owner) return NULL;
02962
02963
02964 Train *coll = Train::From(v)->First();
02965
02966
02967 if (coll == tcc->v) return NULL;
02968
02969 int x_diff = v->x_pos - tcc->v->x_pos;
02970 int y_diff = v->y_pos - tcc->v->y_pos;
02971
02972
02973
02974
02975
02976 uint hash = (y_diff + 7) | (x_diff + 7);
02977 if (hash & ~15) return NULL;
02978
02979
02980 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02981 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
02982
02983
02984 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
02985
02986
02987 tcc->num += TrainCrashed(tcc->v);
02988 tcc->num += TrainCrashed(coll);
02989
02990 return NULL;
02991 }
02992
03000 static bool CheckTrainCollision(Train *v)
03001 {
03002
03003 if (v->track == TRACK_BIT_DEPOT) return false;
03004
03005 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03006
03007 TrainCollideChecker tcc;
03008 tcc.v = v;
03009 tcc.num = 0;
03010
03011
03012 if (v->track == TRACK_BIT_WORMHOLE) {
03013 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03014 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03015 } else {
03016 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03017 }
03018
03019
03020 if (tcc.num == 0) return false;
03021
03022 SetDParam(0, tcc.num);
03023 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
03024 NS_ACCIDENT,
03025 v->index
03026 );
03027
03028 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03029 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03030 return true;
03031 }
03032
03033 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03034 {
03035 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03036
03037 Train *t = Train::From(v);
03038 DiagDirection exitdir = *(DiagDirection *)data;
03039
03040
03041 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03042
03043 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03044
03045 return t;
03046 }
03047
03055 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03056 {
03057 Train *first = v->First();
03058 Train *prev;
03059 bool direction_changed = false;
03060
03061
03062 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03063 DiagDirection enterdir = DIAGDIR_BEGIN;
03064 bool update_signals_crossing = false;
03065
03066 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03067 if (v->track != TRACK_BIT_WORMHOLE) {
03068
03069 if (gp.old_tile == gp.new_tile) {
03070
03071 if (v->track == TRACK_BIT_DEPOT) {
03072
03073 gp.x = v->x_pos;
03074 gp.y = v->y_pos;
03075 } else {
03076
03077
03078
03079 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03080
03081 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03082 if (HasBit(r, VETS_CANNOT_ENTER)) {
03083 goto invalid_rail;
03084 }
03085 if (HasBit(r, VETS_ENTERED_STATION)) {
03086
03087 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03088 }
03089 }
03090 } else {
03091
03092
03093
03094 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03095 assert(IsValidDiagDirection(enterdir));
03096
03097
03098
03099 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03100 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03101
03102 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03103 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03104
03105 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03106 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03107
03108
03109 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03110 }
03111
03112 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03113
03114
03115
03116 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03117
03118 TrackBits chosen_track;
03119 if (prev == NULL) {
03120
03121
03122 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03123 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03124
03125 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03126
03127
03128
03129
03130 Trackdir dir = FindFirstTrackdir(trackdirbits);
03131 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03132 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03133
03134
03135 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03136 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03137 }
03138 }
03139
03140
03141 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03142
03143 Trackdir i = FindFirstTrackdir(trackdirbits);
03144
03145
03146 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03147
03148 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03149 v->cur_speed = 0;
03150 v->subspeed = 0;
03151 v->progress = 255 - 100;
03152 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03153 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03154 v->cur_speed = 0;
03155 v->subspeed = 0;
03156 v->progress = 255 - 10;
03157 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03158 DiagDirection exitdir = TrackdirToExitdir(i);
03159 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03160
03161 exitdir = ReverseDiagDir(exitdir);
03162
03163
03164 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03165 }
03166 }
03167
03168
03169
03170
03171
03172 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03173 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03174 v->wait_counter = 0;
03175 return false;
03176 }
03177 goto reverse_train_direction;
03178 } else {
03179 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03180 }
03181 } else {
03182
03183 if (prev->tile == gp.new_tile) {
03184
03185 if (prev->track == TRACK_BIT_WORMHOLE) {
03186
03187
03188 assert(IsTunnel(prev->tile));
03189 chosen_track = bits;
03190 } else {
03191 chosen_track = prev->track;
03192 }
03193 } else {
03194
03195
03196
03197
03198
03199
03200
03201 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03202 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03203 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03204 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03205 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03206 };
03207 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03208 assert(IsValidDiagDirection(exitdir));
03209 chosen_track = _connecting_track[enterdir][exitdir];
03210 }
03211 chosen_track &= bits;
03212 }
03213
03214
03215 assert(
03216 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03217 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03218 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03219
03220
03221 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03222 gp.x = (gp.x & ~0xF) | b[0];
03223 gp.y = (gp.y & ~0xF) | b[1];
03224 Direction chosen_dir = (Direction)b[2];
03225
03226
03227 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03228 if (HasBit(r, VETS_CANNOT_ENTER)) {
03229 goto invalid_rail;
03230 }
03231
03232 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03233 Track track = FindFirstTrack(chosen_track);
03234 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03235 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03236 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03237 MarkTileDirtyByTile(gp.new_tile);
03238 }
03239
03240
03241 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03242
03243 v->tile = gp.new_tile;
03244
03245 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03246 v->First()->ConsistChanged(true);
03247 }
03248
03249 v->track = chosen_track;
03250 assert(v->track);
03251 }
03252
03253
03254
03255 update_signals_crossing = true;
03256
03257 if (chosen_dir != v->direction) {
03258 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03259 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03260 DirDiff diff = DirDifference(v->direction, chosen_dir);
03261 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03262 }
03263 direction_changed = true;
03264 v->direction = chosen_dir;
03265 }
03266
03267 if (v->IsFrontEngine()) {
03268 v->wait_counter = 0;
03269
03270
03271 TileIndex crossing = TrainApproachingCrossingTile(v);
03272 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03273
03274
03275 CheckNextTrainTile(v);
03276 }
03277
03278 if (HasBit(r, VETS_ENTERED_STATION)) {
03279
03280 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03281 }
03282 }
03283 } else {
03284
03285
03286
03287 if (!(v->vehstatus & VS_HIDDEN)) {
03288 Train *first = v->First();
03289 first->cur_speed = min(first->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03290 }
03291
03292 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03293
03294 if (v->IsFrontEngine()) {
03295 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03296 CheckNextTrainTile(v);
03297 }
03298
03299
03300 if (gp.old_tile == gp.new_tile) {
03301 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03302 }
03303 } else {
03304 v->x_pos = gp.x;
03305 v->y_pos = gp.y;
03306 VehicleUpdatePosition(v);
03307 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03308 continue;
03309 }
03310 }
03311
03312
03313 v->UpdateDeltaXY(v->direction);
03314
03315 v->x_pos = gp.x;
03316 v->y_pos = gp.y;
03317 VehicleUpdatePosition(v);
03318
03319
03320 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03321
03322 if (prev == NULL) {
03323
03324 AffectSpeedByZChange(v, old_z);
03325 }
03326
03327 if (update_signals_crossing) {
03328 if (v->IsFrontEngine()) {
03329 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03330
03331
03332
03333
03334
03335
03336
03337
03338 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03339 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03340 !TryPathReserve(v)) {
03341 MarkTrainAsStuck(v);
03342 }
03343 }
03344 }
03345
03346
03347
03348 if (v->Next() == NULL) {
03349 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03350 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03351 }
03352 }
03353
03354
03355 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03356 }
03357
03358 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03359
03360 return true;
03361
03362 invalid_rail:
03363
03364 if (prev != NULL) error("Disconnecting train");
03365
03366 reverse_train_direction:
03367 if (reverse) {
03368 v->wait_counter = 0;
03369 v->cur_speed = 0;
03370 v->subspeed = 0;
03371 ReverseTrainDirection(v);
03372 }
03373
03374 return false;
03375 }
03376
03383 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03384 {
03385 TrackBits *trackbits = (TrackBits *)data;
03386
03387 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03388 TrackBits train_tbits = Train::From(v)->track;
03389 if (train_tbits == TRACK_BIT_WORMHOLE) {
03390
03391 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03392 } else if (train_tbits != TRACK_BIT_DEPOT) {
03393 *trackbits |= train_tbits;
03394 }
03395 }
03396
03397 return NULL;
03398 }
03399
03407 static void DeleteLastWagon(Train *v)
03408 {
03409 Train *first = v->First();
03410
03411
03412
03413
03414 Train *u = v;
03415 for (; v->Next() != NULL; v = v->Next()) u = v;
03416 u->SetNext(NULL);
03417
03418 if (first != v) {
03419
03420 first->ConsistChanged(false);
03421
03422
03423 if (first->track == TRACK_BIT_DEPOT) {
03424 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03425 }
03426 }
03427
03428
03429 TrackBits trackbits = v->track;
03430 TileIndex tile = v->tile;
03431 Owner owner = v->owner;
03432
03433 delete v;
03434 v = NULL;
03435
03436 if (trackbits == TRACK_BIT_WORMHOLE) {
03437
03438 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03439 }
03440
03441 Track track = TrackBitsToTrack(trackbits);
03442 if (HasReservedTracks(tile, trackbits)) {
03443 UnreserveRailTrack(tile, track);
03444
03445
03446 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03447 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03448
03449
03450 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03451 Track t;
03452 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03453 }
03454
03455
03456 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03457
03458
03459 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03460 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03461 } else {
03462 SetSignalsOnBothDir(tile, track, owner);
03463 }
03464 }
03465
03470 static void ChangeTrainDirRandomly(Train *v)
03471 {
03472 static const DirDiff delta[] = {
03473 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03474 };
03475
03476 do {
03477
03478 if (!(v->vehstatus & VS_HIDDEN)) {
03479 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03480 v->UpdateDeltaXY(v->direction);
03481 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03482
03483
03484
03485 if (v->track != TRACK_BIT_WORMHOLE) {
03486 VehicleUpdatePosition(v);
03487 v->UpdateInclination(false, false);
03488 }
03489 }
03490 } while ((v = v->Next()) != NULL);
03491 }
03492
03498 static bool HandleCrashedTrain(Train *v)
03499 {
03500 int state = ++v->crash_anim_pos;
03501
03502 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03503 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03504 }
03505
03506 uint32 r;
03507 if (state <= 200 && Chance16R(1, 7, r)) {
03508 int index = (r * 10 >> 16);
03509
03510 Vehicle *u = v;
03511 do {
03512 if (--index < 0) {
03513 r = Random();
03514
03515 CreateEffectVehicleRel(u,
03516 GB(r, 8, 3) + 2,
03517 GB(r, 16, 3) + 2,
03518 GB(r, 0, 3) + 5,
03519 EV_EXPLOSION_SMALL);
03520 break;
03521 }
03522 } while ((u = u->Next()) != NULL);
03523 }
03524
03525 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03526
03527 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03528 bool ret = v->Next() != NULL;
03529 DeleteLastWagon(v);
03530 return ret;
03531 }
03532
03533 return true;
03534 }
03535
03537 static const uint16 _breakdown_speeds[16] = {
03538 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03539 };
03540
03541
03550 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03551 {
03552
03553 uint x = v->x_pos & 0xF;
03554 uint y = v->y_pos & 0xF;
03555
03556
03557
03558 switch (v->direction) {
03559 case DIR_N : x = ~x + ~y + 25; break;
03560 case DIR_NW: x = y;
03561 case DIR_NE: x = ~x + 16; break;
03562 case DIR_E : x = ~x + y + 9; break;
03563 case DIR_SE: x = y; break;
03564 case DIR_S : x = x + y - 7; break;
03565 case DIR_W : x = ~y + x + 9; break;
03566 default: break;
03567 }
03568
03569
03570
03571
03572
03573
03574 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03575
03576 v->cur_speed = 0;
03577 if (reverse) ReverseTrainDirection(v);
03578 return false;
03579 }
03580
03581
03582 v->vehstatus |= VS_TRAIN_SLOWING;
03583 uint16 break_speed = _breakdown_speeds[x & 0xF];
03584 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03585
03586 return true;
03587 }
03588
03589
03595 static bool TrainCanLeaveTile(const Train *v)
03596 {
03597
03598 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03599
03600 TileIndex tile = v->tile;
03601
03602
03603 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03604 DiagDirection dir = GetTunnelBridgeDirection(tile);
03605 if (DiagDirToDir(dir) == v->direction) return false;
03606 }
03607
03608
03609 if (IsRailDepotTile(tile)) {
03610 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03611 if (DiagDirToDir(dir) == v->direction) return false;
03612 }
03613
03614 return true;
03615 }
03616
03617
03625 static TileIndex TrainApproachingCrossingTile(const Train *v)
03626 {
03627 assert(v->IsFrontEngine());
03628 assert(!(v->vehstatus & VS_CRASHED));
03629
03630 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03631
03632 DiagDirection dir = TrainExitDir(v->direction, v->track);
03633 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03634
03635
03636 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03637 !CheckCompatibleRail(v, tile)) {
03638 return INVALID_TILE;
03639 }
03640
03641 return tile;
03642 }
03643
03644
03652 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03653 {
03654
03655
03656 int t = v->breakdown_ctr;
03657 if (t > 1) {
03658 v->vehstatus |= VS_TRAIN_SLOWING;
03659
03660 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03661 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03662 } else {
03663 v->vehstatus &= ~VS_TRAIN_SLOWING;
03664 }
03665
03666 if (!TrainCanLeaveTile(v)) return true;
03667
03668
03669 DiagDirection dir = TrainExitDir(v->direction, v->track);
03670
03671 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03672
03673
03674 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03675 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03676
03677 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03678 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03679
03680
03681
03682
03683 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03684 if (_settings_game.pf.forbid_90_deg) {
03685 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03686 }
03687
03688
03689 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03690 return TrainApproachingLineEnd(v, false, reverse);
03691 }
03692
03693
03694 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03695
03696
03697 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03698
03699 return true;
03700 }
03701
03702
03703 static bool TrainLocoHandler(Train *v, bool mode)
03704 {
03705
03706 if (v->vehstatus & VS_CRASHED) {
03707 return mode ? true : HandleCrashedTrain(v);
03708 }
03709
03710 if (v->force_proceed != TFP_NONE) {
03711 ClrBit(v->flags, VRF_TRAIN_STUCK);
03712 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03713 }
03714
03715
03716 if (v->HandleBreakdown()) return true;
03717
03718 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03719 ReverseTrainDirection(v);
03720 }
03721
03722
03723 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03724
03725 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03726 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03727 v->wait_counter = 0;
03728 v->cur_speed = 0;
03729 v->subspeed = 0;
03730 ClrBit(v->flags, VRF_LEAVING_STATION);
03731 ReverseTrainDirection(v);
03732 return true;
03733 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03734
03735
03736
03737 DiagDirection dir = TrainExitDir(v->direction, v->track);
03738 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03739
03740 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03741 TryPathReserve(v, true, true);
03742 }
03743 ClrBit(v->flags, VRF_LEAVING_STATION);
03744 }
03745
03746 v->HandleLoading(mode);
03747
03748 if (v->current_order.IsType(OT_LOADING)) return true;
03749
03750 if (CheckTrainStayInDepot(v)) return true;
03751
03752 if (!mode) v->ShowVisualEffect();
03753
03754
03755 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03756 CheckNextTrainTile(v);
03757 }
03758
03759
03760 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03761 ++v->wait_counter;
03762
03763
03764 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03765
03766 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03767 if (!TryPathReserve(v)) {
03768
03769 if (turn_around) ReverseTrainDirection(v);
03770
03771 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03772
03773 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03774 SetDParam(0, v->index);
03775 AddVehicleNewsItem(
03776 STR_NEWS_TRAIN_IS_STUCK,
03777 NS_ADVICE,
03778 v->index
03779 );
03780 }
03781 v->wait_counter = 0;
03782 }
03783
03784 if (v->force_proceed == TFP_NONE) return true;
03785 ClrBit(v->flags, VRF_TRAIN_STUCK);
03786 v->wait_counter = 0;
03787 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03788 }
03789 }
03790
03791 if (v->current_order.IsType(OT_LEAVESTATION)) {
03792 v->current_order.Free();
03793 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03794 return true;
03795 }
03796
03797 int j = v->UpdateSpeed();
03798
03799
03800 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03801
03802 v->force_proceed = TFP_NONE;
03803 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03804 }
03805
03806 int adv_spd = v->GetAdvanceDistance();
03807 if (j < adv_spd) {
03808
03809 if (v->cur_speed == 0) v->SetLastSpeed();
03810 } else {
03811 TrainCheckIfLineEnds(v);
03812
03813 for (;;) {
03814 j -= adv_spd;
03815 TrainController(v, NULL);
03816
03817 if (CheckTrainCollision(v)) break;
03818
03819 adv_spd = v->GetAdvanceDistance();
03820
03821
03822 if (j < adv_spd || v->cur_speed == 0) break;
03823
03824 OrderType order_type = v->current_order.GetType();
03825
03826 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03827 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03828 IsTileType(v->tile, MP_STATION) &&
03829 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03830 ProcessOrders(v);
03831 }
03832 }
03833 v->SetLastSpeed();
03834 }
03835
03836 for (Train *u = v; u != NULL; u = u->Next()) {
03837 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03838
03839 u->UpdateViewport(false, false);
03840 }
03841
03842 if (v->progress == 0) v->progress = j;
03843
03844 return true;
03845 }
03846
03851 Money Train::GetRunningCost() const
03852 {
03853 Money cost = 0;
03854 const Train *v = this;
03855
03856 do {
03857 const Engine *e = v->GetEngine();
03858 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03859
03860 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03861 if (cost_factor == 0) continue;
03862
03863
03864 if (v->IsMultiheaded()) cost_factor /= 2;
03865
03866 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03867 } while ((v = v->GetNextVehicle()) != NULL);
03868
03869 return cost;
03870 }
03871
03876 bool Train::Tick()
03877 {
03878 this->tick_counter++;
03879
03880 if (this->IsFrontEngine()) {
03881 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03882
03883 this->current_order_time++;
03884
03885 if (!TrainLocoHandler(this, false)) return false;
03886
03887 return TrainLocoHandler(this, true);
03888 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03889
03890 if (++this->crash_anim_pos >= 4400) {
03891 delete this;
03892 return false;
03893 }
03894 }
03895
03896 return true;
03897 }
03898
03903 static void CheckIfTrainNeedsService(Train *v)
03904 {
03905 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03906 if (v->IsInDepot()) {
03907 VehicleServiceInDepot(v);
03908 return;
03909 }
03910
03911 uint max_penalty;
03912 switch (_settings_game.pf.pathfinder_for_trains) {
03913 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03914 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03915 default: NOT_REACHED();
03916 }
03917
03918 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03919
03920 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03921 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03922
03923
03924
03925 v->current_order.MakeDummy();
03926 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03927 }
03928 return;
03929 }
03930
03931 DepotID depot = GetDepotIndex(tfdd.tile);
03932
03933 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03934 v->current_order.GetDestination() != depot &&
03935 !Chance16(3, 16)) {
03936 return;
03937 }
03938
03939 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03940 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03941 v->dest_tile = tfdd.tile;
03942 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03943 }
03944
03946 void Train::OnNewDay()
03947 {
03948 AgeVehicle(this);
03949
03950 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03951
03952 if (this->IsFrontEngine()) {
03953 CheckVehicleBreakdown(this);
03954
03955 CheckIfTrainNeedsService(this);
03956
03957 CheckOrders(this);
03958
03959
03960 if (this->current_order.IsType(OT_GOTO_STATION)) {
03961 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03962 if (tile != INVALID_TILE) this->dest_tile = tile;
03963 }
03964
03965 if (this->running_ticks != 0) {
03966
03967 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03968
03969 this->profit_this_year -= cost.GetCost();
03970 this->running_ticks = 0;
03971
03972 SubtractMoneyFromCompanyFract(this->owner, cost);
03973
03974 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03975 SetWindowClassesDirty(WC_TRAINS_LIST);
03976 }
03977 }
03978 }
03979
03984 Trackdir Train::GetVehicleTrackdir() const
03985 {
03986 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03987
03988 if (this->track == TRACK_BIT_DEPOT) {
03989
03990 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03991 }
03992
03993 if (this->track == TRACK_BIT_WORMHOLE) {
03994
03995 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03996 }
03997
03998 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
03999 }