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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 int max_speed = this->tcache.cached_max_curve_speed;
00373 assert(max_speed == this->GetCurveSpeedLimit());
00374
00375 if (IsRailStationTile(this->tile)) {
00376 StationID sid = GetStationIndex(this->tile);
00377 if (this->current_order.ShouldStopAtStation(this, sid)) {
00378 int station_ahead;
00379 int station_length;
00380 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00381
00382
00383
00384 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00385
00386 if (distance_to_go > 0) {
00387 int st_max_speed = 120;
00388
00389 int delta_v = this->cur_speed / (distance_to_go + 1);
00390 if (max_speed > (this->cur_speed - delta_v)) {
00391 st_max_speed = this->cur_speed - (delta_v / 10);
00392 }
00393
00394 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00395 max_speed = min(max_speed, st_max_speed);
00396 }
00397 }
00398 }
00399
00400 for (const Train *u = this; u != NULL; u = u->Next()) {
00401 if (u->track == TRACK_BIT_DEPOT) {
00402 max_speed = min(max_speed, 61);
00403 break;
00404 }
00405 }
00406
00407 return min(max_speed, this->gcache.cached_max_track_speed);
00408 }
00409
00411 void Train::UpdateAcceleration()
00412 {
00413 assert(this->IsFrontEngine());
00414
00415 uint power = this->gcache.cached_power;
00416 uint weight = this->gcache.cached_weight;
00417 assert(weight != 0);
00418 this->acceleration = Clamp(power / weight * 4, 1, 255);
00419 }
00420
00426 int Train::GetDisplayImageWidth(Point *offset) const
00427 {
00428 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00429 int vehicle_pitch = 0;
00430
00431 const Engine *e = this->GetEngine();
00432 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00433 reference_width = e->GetGRF()->traininfo_vehicle_width;
00434 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00435 }
00436
00437 if (offset != NULL) {
00438 offset->x = reference_width / 2;
00439 offset->y = vehicle_pitch;
00440 }
00441 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00442 }
00443
00444 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00445 {
00446 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00447 }
00448
00455 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00456 {
00457 uint8 spritenum = this->spritenum;
00458 SpriteID sprite;
00459
00460 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00461
00462 if (is_custom_sprite(spritenum)) {
00463 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00464 if (sprite != 0) return sprite;
00465
00466 spritenum = this->GetEngine()->original_image_index;
00467 }
00468
00469 sprite = GetDefaultTrainSprite(spritenum, direction);
00470
00471 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00472
00473 return sprite;
00474 }
00475
00476 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00477 {
00478 const Engine *e = Engine::Get(engine);
00479 Direction dir = rear_head ? DIR_E : DIR_W;
00480 uint8 spritenum = e->u.rail.image_index;
00481
00482 if (is_custom_sprite(spritenum)) {
00483 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00484 if (sprite != 0) {
00485 if (e->GetGRF() != NULL) {
00486 y += e->GetGRF()->traininfo_vehicle_pitch;
00487 }
00488 return sprite;
00489 }
00490
00491 spritenum = Engine::Get(engine)->original_image_index;
00492 }
00493
00494 if (rear_head) spritenum++;
00495
00496 return GetDefaultTrainSprite(spritenum, DIR_W);
00497 }
00498
00499 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00500 {
00501 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00502 int yf = y;
00503 int yr = y;
00504
00505 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00506 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00507 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00508 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00509
00510 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);
00511
00512 DrawSprite(spritef, pal, preferred_x - 14, yf);
00513 DrawSprite(spriter, pal, preferred_x + 15, yr);
00514 } else {
00515 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00516 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00517 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));
00518 DrawSprite(sprite, pal, preferred_x, y);
00519 }
00520 }
00521
00530 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00531 {
00532 const RailVehicleInfo *rvi = &e->u.rail;
00533
00534
00535 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00536
00537 if (flags & DC_EXEC) {
00538 Train *v = new Train();
00539 *ret = v;
00540 v->spritenum = rvi->image_index;
00541
00542 v->engine_type = e->index;
00543 v->gcache.first_engine = INVALID_ENGINE;
00544
00545 DiagDirection dir = GetRailDepotDirection(tile);
00546
00547 v->direction = DiagDirToDir(dir);
00548 v->tile = tile;
00549
00550 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00551 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00552
00553 v->x_pos = x;
00554 v->y_pos = y;
00555 v->z_pos = GetSlopePixelZ(x, y);
00556 v->owner = _current_company;
00557 v->track = TRACK_BIT_DEPOT;
00558 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00559
00560 v->SetWagon();
00561
00562 v->SetFreeWagon();
00563 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00564
00565 v->cargo_type = e->GetDefaultCargoType();
00566 v->cargo_cap = rvi->capacity;
00567
00568 v->railtype = rvi->railtype;
00569
00570 v->build_year = _cur_year;
00571 v->cur_image = SPR_IMG_QUERY;
00572 v->random_bits = VehicleRandomBits();
00573
00574 v->group_id = DEFAULT_GROUP;
00575
00576 AddArticulatedParts(v);
00577
00578 _new_vehicle_id = v->index;
00579
00580 VehicleUpdatePosition(v);
00581 v->First()->ConsistChanged(false);
00582 UpdateTrainGroupID(v->First());
00583
00584 CheckConsistencyOfArticulatedVehicle(v);
00585
00586
00587 Train *w;
00588 FOR_ALL_TRAINS(w) {
00589 if (w->tile == tile &&
00590 w->IsFreeWagon() &&
00591 w->engine_type == e->index &&
00592 w->First() != v &&
00593 !(w->vehstatus & VS_CRASHED)) {
00594 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00595 break;
00596 }
00597 }
00598 }
00599
00600 return CommandCost();
00601 }
00602
00604 static void NormalizeTrainVehInDepot(const Train *u)
00605 {
00606 const Train *v;
00607 FOR_ALL_TRAINS(v) {
00608 if (v->IsFreeWagon() && v->tile == u->tile &&
00609 v->track == TRACK_BIT_DEPOT) {
00610 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00611 CMD_MOVE_RAIL_VEHICLE).Failed())
00612 break;
00613 }
00614 }
00615 }
00616
00617 static void AddRearEngineToMultiheadedTrain(Train *v)
00618 {
00619 Train *u = new Train();
00620 v->value >>= 1;
00621 u->value = v->value;
00622 u->direction = v->direction;
00623 u->owner = v->owner;
00624 u->tile = v->tile;
00625 u->x_pos = v->x_pos;
00626 u->y_pos = v->y_pos;
00627 u->z_pos = v->z_pos;
00628 u->track = TRACK_BIT_DEPOT;
00629 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00630 u->spritenum = v->spritenum + 1;
00631 u->cargo_type = v->cargo_type;
00632 u->cargo_subtype = v->cargo_subtype;
00633 u->cargo_cap = v->cargo_cap;
00634 u->railtype = v->railtype;
00635 u->engine_type = v->engine_type;
00636 u->build_year = v->build_year;
00637 u->cur_image = SPR_IMG_QUERY;
00638 u->random_bits = VehicleRandomBits();
00639 v->SetMultiheaded();
00640 u->SetMultiheaded();
00641 v->SetNext(u);
00642 VehicleUpdatePosition(u);
00643
00644
00645 v->other_multiheaded_part = u;
00646 u->other_multiheaded_part = v;
00647 }
00648
00658 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00659 {
00660 const RailVehicleInfo *rvi = &e->u.rail;
00661
00662 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00663
00664
00665
00666 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00667
00668 if (flags & DC_EXEC) {
00669 DiagDirection dir = GetRailDepotDirection(tile);
00670 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00671 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00672
00673 Train *v = new Train();
00674 *ret = v;
00675 v->direction = DiagDirToDir(dir);
00676 v->tile = tile;
00677 v->owner = _current_company;
00678 v->x_pos = x;
00679 v->y_pos = y;
00680 v->z_pos = GetSlopePixelZ(x, y);
00681 v->track = TRACK_BIT_DEPOT;
00682 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00683 v->spritenum = rvi->image_index;
00684 v->cargo_type = e->GetDefaultCargoType();
00685 v->cargo_cap = rvi->capacity;
00686 v->last_station_visited = INVALID_STATION;
00687
00688 v->engine_type = e->index;
00689 v->gcache.first_engine = INVALID_ENGINE;
00690
00691 v->reliability = e->reliability;
00692 v->reliability_spd_dec = e->reliability_spd_dec;
00693 v->max_age = e->GetLifeLengthInDays();
00694
00695 v->railtype = rvi->railtype;
00696 _new_vehicle_id = v->index;
00697
00698 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00699 v->date_of_last_service = _date;
00700 v->build_year = _cur_year;
00701 v->cur_image = SPR_IMG_QUERY;
00702 v->random_bits = VehicleRandomBits();
00703
00704 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00705
00706 v->group_id = DEFAULT_GROUP;
00707
00708 v->SetFrontEngine();
00709 v->SetEngine();
00710
00711 VehicleUpdatePosition(v);
00712
00713 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00714 AddRearEngineToMultiheadedTrain(v);
00715 } else {
00716 AddArticulatedParts(v);
00717 }
00718
00719 v->ConsistChanged(false);
00720 UpdateTrainGroupID(v);
00721
00722 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00723 NormalizeTrainVehInDepot(v);
00724 }
00725
00726 CheckConsistencyOfArticulatedVehicle(v);
00727 }
00728
00729 return CommandCost();
00730 }
00731
00736 bool Train::IsInDepot() const
00737 {
00738
00739 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00740
00741
00742 for (const Train *v = this; v != NULL; v = v->Next()) {
00743 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00744 }
00745
00746 return true;
00747 }
00748
00753 bool Train::IsStoppedInDepot() const
00754 {
00755
00756 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00757 return this->IsInDepot();
00758 }
00759
00760 static Train *FindGoodVehiclePos(const Train *src)
00761 {
00762 EngineID eng = src->engine_type;
00763 TileIndex tile = src->tile;
00764
00765 Train *dst;
00766 FOR_ALL_TRAINS(dst) {
00767 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00768
00769 Train *t = dst;
00770 while (t->engine_type == eng) {
00771 t = t->Next();
00772 if (t == NULL) return dst;
00773 }
00774 }
00775 }
00776
00777 return NULL;
00778 }
00779
00781 typedef SmallVector<Train *, 16> TrainList;
00782
00788 static void MakeTrainBackup(TrainList &list, Train *t)
00789 {
00790 for (; t != NULL; t = t->Next()) *list.Append() = t;
00791 }
00792
00797 static void RestoreTrainBackup(TrainList &list)
00798 {
00799
00800 if (list.Length() == 0) return;
00801
00802 Train *prev = NULL;
00803
00804 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00805 Train *t = *iter;
00806 if (prev != NULL) {
00807 prev->SetNext(t);
00808 } else if (t->Previous() != NULL) {
00809
00810 t->Previous()->SetNext(NULL);
00811 }
00812 prev = t;
00813 }
00814 }
00815
00821 static void RemoveFromConsist(Train *part, bool chain = false)
00822 {
00823 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00824
00825
00826
00827 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00828
00829
00830 tail->SetNext(NULL);
00831 }
00832
00838 static void InsertInConsist(Train *dst, Train *chain)
00839 {
00840
00841 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00842
00843 chain->Last()->SetNext(dst->Next());
00844 dst->SetNext(chain);
00845 }
00846
00852 static void NormaliseDualHeads(Train *t)
00853 {
00854 for (; t != NULL; t = t->GetNextVehicle()) {
00855 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00856
00857
00858 Train *u;
00859 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00860
00861 if (u == t->other_multiheaded_part) continue;
00862
00863
00864 RemoveFromConsist(t->other_multiheaded_part);
00865
00866 InsertInConsist(u, t->other_multiheaded_part);
00867 }
00868 }
00869
00874 static void NormaliseSubtypes(Train *chain)
00875 {
00876
00877 if (chain == NULL) return;
00878
00879
00880 assert(chain->Previous() == NULL);
00881
00882
00883 if (chain->IsWagon()) {
00884 chain->SetFreeWagon();
00885 } else {
00886 assert(chain->IsEngine());
00887 chain->SetFrontEngine();
00888 }
00889
00890
00891 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00892 t->ClearFreeWagon();
00893 t->ClearFrontEngine();
00894 }
00895 }
00896
00906 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00907 {
00908
00909
00910
00911 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00912 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00913 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00914 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00915 return CommandCost();
00916 }
00917
00918
00919
00920 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00921
00922 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00923 }
00924
00930 static CommandCost CheckTrainAttachment(Train *t)
00931 {
00932
00933 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00934
00935
00936
00937 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00938
00939 Train *head = t;
00940 Train *prev = t;
00941
00942
00943 t = t->Next();
00944 prev->SetNext(NULL);
00945
00946
00947 head->InvalidateNewGRFCache();
00948
00949 while (t != NULL) {
00950 allowed_len -= t->gcache.cached_veh_length;
00951
00952 Train *next = t->Next();
00953
00954
00955
00956 t->SetNext(NULL);
00957
00958
00959 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00960
00961 EngineID first_engine = t->gcache.first_engine;
00962 t->gcache.first_engine = INVALID_ENGINE;
00963
00964
00965
00966 t->InvalidateNewGRFCache();
00967
00968 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00969
00970
00971 t->gcache.first_engine = first_engine;
00972
00973
00974 t->InvalidateNewGRFCache();
00975 head->InvalidateNewGRFCache();
00976
00977 if (callback != CALLBACK_FAILED) {
00978
00979 StringID error = STR_NULL;
00980
00981 if (head->GetGRF()->grf_version < 8) {
00982 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00983 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00984 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
00985 } else {
00986 if (callback < 0x400) {
00987 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00988 } else {
00989 switch (callback) {
00990 case 0x400:
00991 case 0x401:
00992 break;
00993
00994 default:
00995 case 0x402:
00996 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00997 break;
00998 }
00999 }
01000 }
01001
01002 if (error != STR_NULL) return_cmd_error(error);
01003 }
01004 }
01005
01006
01007 prev->SetNext(t);
01008 prev = t;
01009 t = next;
01010 }
01011
01012 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01013 return CommandCost();
01014 }
01015
01026 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01027 {
01028
01029 CommandCost ret = CheckTrainAttachment(src);
01030 if (ret.Failed()) return ret;
01031 ret = CheckTrainAttachment(dst);
01032 if (ret.Failed()) return ret;
01033
01034
01035 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01036 }
01037
01046 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01047 {
01048
01049 if (*src_head == *dst_head) {
01050
01051
01052 *dst_head = NULL;
01053 } else if (*dst_head == NULL) {
01054
01055
01056 *dst_head = src;
01057 }
01058
01059 if (src == *src_head) {
01060
01061
01062
01063
01064
01065
01066 *src_head = move_chain ? NULL :
01067 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01068 }
01069
01070
01071
01072
01073 RemoveFromConsist(src, move_chain);
01074 if (*dst_head != src) InsertInConsist(dst, src);
01075
01076
01077
01078 NormaliseDualHeads(*src_head);
01079 NormaliseDualHeads(*dst_head);
01080 }
01081
01087 static void NormaliseTrainHead(Train *head)
01088 {
01089
01090 if (head == NULL) return;
01091
01092
01093 head->ConsistChanged(false);
01094 UpdateTrainGroupID(head);
01095
01096
01097 if (!head->IsFrontEngine()) return;
01098
01099
01100 InvalidateWindowData(WC_VEHICLE_REFIT, head->index);
01101 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01102
01103
01104 if (head->unitnumber != 0) return;
01105 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01106 }
01107
01120 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01121 {
01122 VehicleID s = GB(p1, 0, 20);
01123 VehicleID d = GB(p2, 0, 20);
01124 bool move_chain = HasBit(p1, 20);
01125
01126 Train *src = Train::GetIfValid(s);
01127 if (src == NULL) return CMD_ERROR;
01128
01129 CommandCost ret = CheckOwnership(src->owner);
01130 if (ret.Failed()) return ret;
01131
01132
01133 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01134
01135
01136 Train *dst;
01137 if (d == INVALID_VEHICLE) {
01138 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01139 } else {
01140 dst = Train::GetIfValid(d);
01141 if (dst == NULL) return CMD_ERROR;
01142
01143 CommandCost ret = CheckOwnership(dst->owner);
01144 if (ret.Failed()) return ret;
01145
01146
01147 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01148 }
01149
01150
01151 src = src->GetFirstEnginePart();
01152 if (dst != NULL) {
01153 dst = dst->GetFirstEnginePart();
01154 }
01155
01156
01157 if (src == dst) return CommandCost();
01158
01159
01160 Train *src_head = src->First();
01161 Train *dst_head;
01162 if (dst != NULL) {
01163 dst_head = dst->First();
01164 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01165
01166 dst = dst->GetLastEnginePart();
01167 } else {
01168 dst_head = NULL;
01169 }
01170
01171 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01172
01173
01174 if (move_chain && src_head == dst_head) return CommandCost();
01175
01176
01177 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01178
01179
01180 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01181
01182
01183 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01184
01185
01186
01187 TrainList original_src;
01188 TrainList original_dst;
01189
01190 MakeTrainBackup(original_src, src_head);
01191 MakeTrainBackup(original_dst, dst_head);
01192
01193
01194
01195
01196 Train *original_src_head = src_head;
01197 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01198
01199
01200 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01201 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01202
01203
01204 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01205
01206 if ((flags & DC_AUTOREPLACE) == 0) {
01207
01208
01209
01210 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01211 if (ret.Failed()) {
01212
01213 RestoreTrainBackup(original_src);
01214 RestoreTrainBackup(original_dst);
01215 return ret;
01216 }
01217 }
01218
01219
01220 if (flags & DC_EXEC) {
01221
01222 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01223 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01224
01225
01226 NormaliseSubtypes(src_head);
01227 NormaliseSubtypes(dst_head);
01228
01229
01230
01231
01232
01233
01234
01235
01236
01237
01238
01239
01240
01241
01242
01243
01244
01245
01246
01247
01248
01249 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01250
01251 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01252 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01253 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01254 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01255 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01256 SetWindowDirty(WC_COMPANY, _current_company);
01257
01258
01259
01260 DeleteVehicleOrders(src);
01261 RemoveVehicleFromGroup(src);
01262 src->unitnumber = 0;
01263 }
01264
01265
01266
01267 if (original_src_head != src && dst_head == src) {
01268 SetTrainGroupID(src, DEFAULT_GROUP);
01269 SetWindowDirty(WC_COMPANY, _current_company);
01270 }
01271
01272
01273 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01274 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01275
01276
01277 NormaliseTrainHead(src_head);
01278 NormaliseTrainHead(dst_head);
01279
01280 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01281 CheckCargoCapacity(src_head);
01282 CheckCargoCapacity(dst_head);
01283 }
01284
01285
01286 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01287 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01288 } else {
01289
01290 RestoreTrainBackup(original_src);
01291 RestoreTrainBackup(original_dst);
01292 }
01293
01294 return CommandCost();
01295 }
01296
01308 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01309 {
01310
01311 Window *w = NULL;
01312
01313
01314 bool sell_chain = HasBit(data, 0);
01315
01316 Train *v = Train::From(t)->GetFirstEnginePart();
01317 Train *first = v->First();
01318
01319 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01320
01321
01322
01323 TrainList original;
01324 MakeTrainBackup(original, first);
01325
01326
01327 Train *new_head = first;
01328 Train *sell_head = NULL;
01329
01330
01331 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01332
01333
01334 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01335 if (ret.Failed()) {
01336
01337 RestoreTrainBackup(original);
01338 return ret;
01339 }
01340
01341 CommandCost cost(EXPENSES_NEW_VEHICLES);
01342 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01343
01344 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01345 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01346 }
01347
01348
01349 if (flags & DC_EXEC) {
01350
01351 NormaliseSubtypes(new_head);
01352
01353 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01354
01355
01356 new_head->orders.list = first->orders.list;
01357 new_head->AddToShared(first);
01358 DeleteVehicleOrders(first);
01359
01360
01361 new_head->CopyVehicleConfigAndStatistics(first);
01362 GroupStatistics::CountVehicle(new_head, 1);
01363
01364
01365 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01366 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01367 OrderBackup::Backup(v, user);
01368 }
01369
01370
01371 NormaliseTrainHead(new_head);
01372
01373
01374 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01375 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01376
01377
01378 delete sell_head;
01379 } else {
01380
01381 RestoreTrainBackup(original);
01382 }
01383
01384 return cost;
01385 }
01386
01387 void Train::UpdateDeltaXY(Direction direction)
01388 {
01389
01390 this->x_offs = -1;
01391 this->y_offs = -1;
01392 this->x_extent = 3;
01393 this->y_extent = 3;
01394 this->z_extent = 6;
01395 this->x_bb_offs = 0;
01396 this->y_bb_offs = 0;
01397
01398 if (!IsDiagonalDirection(direction)) {
01399 static const int _sign_table[] =
01400 {
01401
01402 -1, -1,
01403 -1, 1,
01404 1, 1,
01405 1, -1,
01406 };
01407
01408 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01409
01410
01411 this->x_offs -= half_shorten * _sign_table[direction];
01412 this->y_offs -= half_shorten * _sign_table[direction + 1];
01413 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01414 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01415 } else {
01416 switch (direction) {
01417
01418
01419 case DIR_NE:
01420 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01421 this->x_extent = this->gcache.cached_veh_length - 1;
01422 this->x_bb_offs = -1;
01423 break;
01424
01425 case DIR_NW:
01426 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01427 this->y_extent = this->gcache.cached_veh_length - 1;
01428 this->y_bb_offs = -1;
01429 break;
01430
01431
01432
01433 case DIR_SW:
01434 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01435 this->x_extent = VEHICLE_LENGTH - 1;
01436 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01437 break;
01438
01439 case DIR_SE:
01440 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01441 this->y_extent = VEHICLE_LENGTH - 1;
01442 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01443 break;
01444
01445 default:
01446 NOT_REACHED();
01447 }
01448 }
01449 }
01450
01455 static void MarkTrainAsStuck(Train *v)
01456 {
01457 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01458
01459 SetBit(v->flags, VRF_TRAIN_STUCK);
01460
01461 v->wait_counter = 0;
01462
01463
01464 v->cur_speed = 0;
01465 v->subspeed = 0;
01466 v->SetLastSpeed();
01467
01468 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01469 }
01470 }
01471
01479 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01480 {
01481 uint16 flag1 = *swap_flag1;
01482 uint16 flag2 = *swap_flag2;
01483
01484
01485 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01486 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01487 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01488 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01489
01490
01491 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01492 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01493 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01494 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01495 }
01496 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01497 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01498 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01499 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01500 }
01501 }
01502
01507 static void UpdateStatusAfterSwap(Train *v)
01508 {
01509
01510 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01511
01512
01513 if (v->track != TRACK_BIT_WORMHOLE) {
01514 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01515 } else {
01516
01517
01518
01519
01520 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01521 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01522 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01523 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01524
01525
01526
01527 VehicleUpdatePosition(v);
01528 v->UpdateInclination(true, true);
01529 return;
01530 }
01531 }
01532 }
01533
01534 VehicleUpdatePosition(v);
01535 v->UpdateViewport(true, true);
01536 }
01537
01544 void ReverseTrainSwapVeh(Train *v, int l, int r)
01545 {
01546 Train *a, *b;
01547
01548
01549 for (a = v; l != 0; l--) a = a->Next();
01550 for (b = v; r != 0; r--) b = b->Next();
01551
01552 if (a != b) {
01553
01554 {
01555 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01556 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01557 a->vehstatus = tmp;
01558 }
01559
01560 Swap(a->track, b->track);
01561 Swap(a->direction, b->direction);
01562 Swap(a->x_pos, b->x_pos);
01563 Swap(a->y_pos, b->y_pos);
01564 Swap(a->tile, b->tile);
01565 Swap(a->z_pos, b->z_pos);
01566
01567 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01568
01569 UpdateStatusAfterSwap(a);
01570 UpdateStatusAfterSwap(b);
01571 } else {
01572
01573
01574
01575 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01576 UpdateStatusAfterSwap(a);
01577 }
01578 }
01579
01580
01586 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01587 {
01588 return (v->type == VEH_TRAIN) ? v : NULL;
01589 }
01590
01591
01598 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01599 {
01600 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01601
01602 Train *t = Train::From(v);
01603 if (!t->IsFrontEngine()) return NULL;
01604
01605 TileIndex tile = *(TileIndex *)data;
01606
01607 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01608
01609 return t;
01610 }
01611
01612
01619 static bool TrainApproachingCrossing(TileIndex tile)
01620 {
01621 assert(IsLevelCrossingTile(tile));
01622
01623 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01624 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01625
01626 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01627
01628 dir = ReverseDiagDir(dir);
01629 tile_from = tile + TileOffsByDiagDir(dir);
01630
01631 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01632 }
01633
01634
01641 void UpdateLevelCrossing(TileIndex tile, bool sound)
01642 {
01643 assert(IsLevelCrossingTile(tile));
01644
01645
01646 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01647
01648 if (new_state != IsCrossingBarred(tile)) {
01649 if (new_state && sound) {
01650 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01651 }
01652 SetCrossingBarred(tile, new_state);
01653 MarkTileDirtyByTile(tile);
01654 }
01655 }
01656
01657
01663 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01664 {
01665 if (!IsCrossingBarred(tile)) {
01666 BarCrossing(tile);
01667 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01668 MarkTileDirtyByTile(tile);
01669 }
01670 }
01671
01672
01678 static void AdvanceWagonsBeforeSwap(Train *v)
01679 {
01680 Train *base = v;
01681 Train *first = base;
01682 Train *last = v->Last();
01683 uint length = CountVehiclesInChain(v);
01684
01685 while (length > 2) {
01686 last = last->Previous();
01687 first = first->Next();
01688
01689 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01690
01691
01692
01693 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01694
01695 base = first;
01696 length -= 2;
01697 }
01698 }
01699
01700
01706 static void AdvanceWagonsAfterSwap(Train *v)
01707 {
01708
01709 Train *dep = v;
01710 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01711 dep = dep->Next();
01712 }
01713
01714 Train *leave = dep->Next();
01715
01716 if (leave != NULL) {
01717
01718 int d = TicksToLeaveDepot(dep);
01719
01720 if (d <= 0) {
01721 leave->vehstatus &= ~VS_HIDDEN;
01722 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01723 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01724 }
01725 } else {
01726 dep = NULL;
01727 }
01728
01729 Train *base = v;
01730 Train *first = base;
01731 Train *last = v->Last();
01732 uint length = CountVehiclesInChain(v);
01733
01734
01735
01736 bool nomove = (dep == NULL);
01737
01738 while (length > 2) {
01739
01740
01741 if (base == dep) break;
01742
01743
01744 if (last == dep) nomove = true;
01745
01746 last = last->Previous();
01747 first = first->Next();
01748
01749 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01750
01751
01752 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01753
01754 base = first;
01755 length -= 2;
01756 }
01757 }
01758
01763 void ReverseTrainDirection(Train *v)
01764 {
01765 if (IsRailDepotTile(v->tile)) {
01766 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01767 }
01768
01769
01770 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01771
01772
01773 TileIndex crossing = TrainApproachingCrossingTile(v);
01774
01775
01776 int r = CountVehiclesInChain(v) - 1;
01777
01778 AdvanceWagonsBeforeSwap(v);
01779
01780
01781 int l = 0;
01782 do {
01783 ReverseTrainSwapVeh(v, l++, r--);
01784 } while (l <= r);
01785
01786 AdvanceWagonsAfterSwap(v);
01787
01788 if (IsRailDepotTile(v->tile)) {
01789 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01790 }
01791
01792 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01793
01794 ClrBit(v->flags, VRF_REVERSING);
01795
01796
01797 v->ConsistChanged(true);
01798
01799
01800 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01801
01802
01803 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01804
01805
01806 crossing = TrainApproachingCrossingTile(v);
01807 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01808
01809
01810 if (v->track == TRACK_BIT_DEPOT) {
01811
01812 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01813 ClrBit(v->flags, VRF_TRAIN_STUCK);
01814 return;
01815 }
01816
01817
01818
01819 DiagDirection dir = TrainExitDir(v->direction, v->track);
01820 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01821
01822 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01823
01824
01825 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01826 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01827 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01828
01829 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01830 if (TryPathReserve(v, false, first_tile_okay)) {
01831
01832 CheckNextTrainTile(v);
01833 } else if (v->current_order.GetType() != OT_LOADING) {
01834
01835 MarkTrainAsStuck(v);
01836 }
01837 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01838
01839 ClrBit(v->flags, VRF_TRAIN_STUCK);
01840 v->wait_counter = 0;
01841 }
01842 }
01843
01853 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01854 {
01855 Train *v = Train::GetIfValid(p1);
01856 if (v == NULL) return CMD_ERROR;
01857
01858 CommandCost ret = CheckOwnership(v->owner);
01859 if (ret.Failed()) return ret;
01860
01861 if (p2 != 0) {
01862
01863
01864 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01865 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01866 }
01867 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01868
01869 Train *front = v->First();
01870
01871 if (!front->IsStoppedInDepot()) {
01872 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01873 }
01874
01875 if (flags & DC_EXEC) {
01876 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01877
01878 front->ConsistChanged(false);
01879 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01880 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01881 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01882 SetWindowClassesDirty(WC_TRAINS_LIST);
01883 }
01884 } else {
01885
01886 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01887
01888 if (flags & DC_EXEC) {
01889
01890 if (v->current_order.IsType(OT_LOADING)) {
01891 const Vehicle *last = v;
01892 while (last->Next() != NULL) last = last->Next();
01893
01894
01895 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01896 v->LeaveStation();
01897 }
01898 }
01899
01900
01901 v->force_proceed = TFP_NONE;
01902 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01903
01904 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01905 ToggleBit(v->flags, VRF_REVERSING);
01906 } else {
01907 v->cur_speed = 0;
01908 v->SetLastSpeed();
01909 HideFillingPercent(&v->fill_percent_te_id);
01910 ReverseTrainDirection(v);
01911 }
01912 }
01913 }
01914 return CommandCost();
01915 }
01916
01926 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01927 {
01928 Train *t = Train::GetIfValid(p1);
01929 if (t == NULL) return CMD_ERROR;
01930
01931 CommandCost ret = CheckOwnership(t->owner);
01932 if (ret.Failed()) return ret;
01933
01934
01935 if (flags & DC_EXEC) {
01936
01937
01938
01939
01940
01941 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? TFP_STUCK : TFP_SIGNAL;
01942 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01943 }
01944
01945 return CommandCost();
01946 }
01947
01955 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01956 {
01957 assert(!(v->vehstatus & VS_CRASHED));
01958
01959 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01960
01961 PBSTileInfo origin = FollowTrainReservation(v);
01962 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01963
01964 switch (_settings_game.pf.pathfinder_for_trains) {
01965 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01966 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01967
01968 default: NOT_REACHED();
01969 }
01970 }
01971
01979 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
01980 {
01981 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
01982 if (tfdd.best_length == UINT_MAX) return false;
01983
01984 if (location != NULL) *location = tfdd.tile;
01985 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
01986 if (reverse != NULL) *reverse = tfdd.reverse;
01987
01988 return true;
01989 }
01990
01992 void Train::PlayLeaveStationSound() const
01993 {
01994 static const SoundFx sfx[] = {
01995 SND_04_TRAIN,
01996 SND_0A_TRAIN_HORN,
01997 SND_0A_TRAIN_HORN,
01998 SND_47_MAGLEV_2,
01999 SND_41_MAGLEV
02000 };
02001
02002 if (PlayVehicleSound(this, VSE_START)) return;
02003
02004 EngineID engtype = this->engine_type;
02005 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02006 }
02007
02012 static void CheckNextTrainTile(Train *v)
02013 {
02014
02015 if (_settings_game.pf.path_backoff_interval == 255) return;
02016
02017
02018 if (v->track == TRACK_BIT_DEPOT) return;
02019
02020 switch (v->current_order.GetType()) {
02021
02022 case OT_GOTO_DEPOT:
02023 if (v->tile == v->dest_tile) return;
02024 break;
02025
02026 case OT_GOTO_WAYPOINT:
02027
02028 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02029 break;
02030
02031 case OT_NOTHING:
02032 case OT_LEAVESTATION:
02033 case OT_LOADING:
02034
02035 if (v->GetNumOrders() > 0) return;
02036 break;
02037
02038 default:
02039 break;
02040 }
02041
02042 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02043
02044 Trackdir td = v->GetVehicleTrackdir();
02045
02046
02047 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02048 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02049 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02050
02051 CFollowTrackRail ft(v);
02052 if (!ft.Follow(v->tile, td)) return;
02053
02054 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02055
02056 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02057 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02058
02059 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02060 if (_settings_game.pf.forbid_90_deg) {
02061 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02062 }
02063 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02064 }
02065 }
02066 }
02067 }
02068
02074 static bool CheckTrainStayInDepot(Train *v)
02075 {
02076
02077 for (const Train *u = v; u != NULL; u = u->Next()) {
02078 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02079 }
02080
02081
02082 if (v->gcache.cached_power == 0) {
02083 v->vehstatus |= VS_STOPPED;
02084 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02085 return true;
02086 }
02087
02088 SigSegState seg_state;
02089
02090 if (v->force_proceed == TFP_NONE) {
02091
02092 if (++v->wait_counter < 37) {
02093 SetWindowClassesDirty(WC_TRAINS_LIST);
02094 return true;
02095 }
02096
02097 v->wait_counter = 0;
02098
02099 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02100 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02101
02102 SetWindowClassesDirty(WC_TRAINS_LIST);
02103 return true;
02104 }
02105 } else {
02106 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02107 }
02108
02109
02110 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02111
02112 if (HasDepotReservation(v->tile)) return true;
02113 SetDepotReservation(v->tile, true);
02114 VehicleEnterDepot(v);
02115 return true;
02116 }
02117
02118
02119 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02120
02121 SetWindowClassesDirty(WC_TRAINS_LIST);
02122 MarkTrainAsStuck(v);
02123 return true;
02124 }
02125
02126 SetDepotReservation(v->tile, true);
02127 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02128
02129 VehicleServiceInDepot(v);
02130 SetWindowClassesDirty(WC_TRAINS_LIST);
02131 v->PlayLeaveStationSound();
02132
02133 v->track = TRACK_BIT_X;
02134 if (v->direction & 2) v->track = TRACK_BIT_Y;
02135
02136 v->vehstatus &= ~VS_HIDDEN;
02137 v->cur_speed = 0;
02138
02139 v->UpdateViewport(true, true);
02140 VehicleUpdatePosition(v);
02141 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02142 v->UpdateAcceleration();
02143 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02144
02145 return false;
02146 }
02147
02154 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02155 {
02156 DiagDirection dir = TrackdirToExitdir(track_dir);
02157
02158 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02159
02160 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02161 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02162
02163 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02164
02165 SetTunnelBridgeReservation(tile, false);
02166 SetTunnelBridgeReservation(end, false);
02167
02168 if (_settings_client.gui.show_track_reservation) {
02169 MarkTileDirtyByTile(tile);
02170 MarkTileDirtyByTile(end);
02171 }
02172 }
02173 }
02174 } else if (IsRailStationTile(tile)) {
02175 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02176
02177
02178 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02179 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02180 }
02181 } else {
02182
02183 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02184 }
02185 }
02186
02193 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02194 {
02195 assert(v->IsFrontEngine());
02196
02197 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02198 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02199 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02200 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02201
02202
02203 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02204
02205 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02206 while (ft.Follow(tile, td)) {
02207 tile = ft.m_new_tile;
02208 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02209 td = RemoveFirstTrackdir(&bits);
02210 assert(bits == TRACKDIR_BIT_NONE);
02211
02212 if (!IsValidTrackdir(td)) break;
02213
02214 if (IsTileType(tile, MP_RAILWAY)) {
02215 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02216
02217 UnreserveRailTrack(tile, TrackdirToTrack(td));
02218 break;
02219 }
02220 if (HasPbsSignalOnTrackdir(tile, td)) {
02221 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02222
02223 break;
02224 } else {
02225
02226 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02227 MarkTileDirtyByTile(tile);
02228 }
02229 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02230 break;
02231 }
02232 }
02233
02234
02235 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);
02236
02237 free_tile = true;
02238 }
02239 }
02240
02241 static const byte _initial_tile_subcoord[6][4][3] = {
02242 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02243 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02244 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02245 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02246 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02247 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02248 };
02249
02262 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02263 {
02264 switch (_settings_game.pf.pathfinder_for_trains) {
02265 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02266 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02267
02268 default: NOT_REACHED();
02269 }
02270 }
02271
02277 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02278 {
02279 PBSTileInfo origin = FollowTrainReservation(v);
02280
02281 CFollowTrackRail ft(v);
02282
02283 TileIndex tile = origin.tile;
02284 Trackdir cur_td = origin.trackdir;
02285 while (ft.Follow(tile, cur_td)) {
02286 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02287
02288 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02289 }
02290
02291 if (_settings_game.pf.forbid_90_deg) {
02292 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02293 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02294 }
02295
02296
02297 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02298 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02299
02300
02301
02302
02303
02304
02305 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02306
02307
02308
02309 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02310
02311
02312 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02313 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02314 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02315 }
02316
02317 tile = ft.m_new_tile;
02318 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02319
02320 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02321 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02322 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02323
02324 return PBSTileInfo(tile, cur_td, true);
02325 }
02326
02327 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02328 }
02329
02330 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02331
02332 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02333 }
02334
02335
02336 tile = origin.tile;
02337 cur_td = origin.trackdir;
02338 TileIndex stopped = ft.m_old_tile;
02339 Trackdir stopped_td = ft.m_old_td;
02340 while (tile != stopped || cur_td != stopped_td) {
02341 if (!ft.Follow(tile, cur_td)) break;
02342
02343 if (_settings_game.pf.forbid_90_deg) {
02344 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02345 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02346 }
02347 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02348
02349 tile = ft.m_new_tile;
02350 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02351
02352 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02353 }
02354
02355
02356 return PBSTileInfo();
02357 }
02358
02369 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02370 {
02371 switch (_settings_game.pf.pathfinder_for_trains) {
02372 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02373 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02374
02375 default: NOT_REACHED();
02376 }
02377 }
02378
02380 class VehicleOrderSaver {
02381 private:
02382 Train *v;
02383 Order old_order;
02384 TileIndex old_dest_tile;
02385 StationID old_last_station_visited;
02386 VehicleOrderID index;
02387 bool suppress_implicit_orders;
02388
02389 public:
02390 VehicleOrderSaver(Train *_v) :
02391 v(_v),
02392 old_order(_v->current_order),
02393 old_dest_tile(_v->dest_tile),
02394 old_last_station_visited(_v->last_station_visited),
02395 index(_v->cur_real_order_index),
02396 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02397 {
02398 }
02399
02400 ~VehicleOrderSaver()
02401 {
02402 this->v->current_order = this->old_order;
02403 this->v->dest_tile = this->old_dest_tile;
02404 this->v->last_station_visited = this->old_last_station_visited;
02405 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02406 }
02407
02413 bool SwitchToNextOrder(bool skip_first)
02414 {
02415 if (this->v->GetNumOrders() == 0) return false;
02416
02417 if (skip_first) ++this->index;
02418
02419 int depth = 0;
02420
02421 do {
02422
02423 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02424
02425 Order *order = this->v->GetOrder(this->index);
02426 assert(order != NULL);
02427
02428 switch (order->GetType()) {
02429 case OT_GOTO_DEPOT:
02430
02431 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02432 case OT_GOTO_STATION:
02433 case OT_GOTO_WAYPOINT:
02434 this->v->current_order = *order;
02435 return UpdateOrderDest(this->v, order, 0, true);
02436 case OT_CONDITIONAL: {
02437 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02438 if (next != INVALID_VEH_ORDER_ID) {
02439 depth++;
02440 this->index = next;
02441
02442 continue;
02443 }
02444 break;
02445 }
02446 default:
02447 break;
02448 }
02449
02450
02451 ++this->index;
02452 depth++;
02453 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02454
02455 return false;
02456 }
02457 };
02458
02459
02460 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02461 {
02462 Track best_track = INVALID_TRACK;
02463 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02464 bool changed_signal = false;
02465
02466 assert((tracks & ~TRACK_BIT_MASK) == 0);
02467
02468 if (got_reservation != NULL) *got_reservation = false;
02469
02470
02471 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02472
02473 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02474
02475
02476 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02477 Track track = FindFirstTrack(tracks);
02478
02479 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02480 do_track_reservation = true;
02481 changed_signal = true;
02482 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02483 } else if (!do_track_reservation) {
02484 return track;
02485 }
02486 best_track = track;
02487 }
02488
02489 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02490 DiagDirection dest_enterdir = enterdir;
02491 if (do_track_reservation) {
02492 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02493 if (res_dest.tile == INVALID_TILE) {
02494
02495 if (mark_stuck) MarkTrainAsStuck(v);
02496 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02497 return FindFirstTrack(tracks);
02498 }
02499 if (res_dest.okay) {
02500
02501 if (got_reservation != NULL) *got_reservation = true;
02502 if (changed_signal) MarkTileDirtyByTile(tile);
02503 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02504 return best_track;
02505 }
02506
02507
02508
02509
02510 CheckIfTrainNeedsService(v);
02511 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02512 }
02513
02514
02515 VehicleOrderSaver orders(v);
02516
02517
02518
02519
02520
02521
02522
02523 if (v->current_order.IsType(OT_LEAVESTATION)) {
02524 orders.SwitchToNextOrder(false);
02525 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02526 v->current_order.IsType(OT_GOTO_STATION) ?
02527 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02528 v->tile == v->dest_tile))) {
02529 orders.SwitchToNextOrder(true);
02530 }
02531
02532 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02533
02534 bool path_found = true;
02535 TileIndex new_tile = res_dest.tile;
02536
02537 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02538 if (new_tile == tile) best_track = next_track;
02539 v->HandlePathfindingResult(path_found);
02540 }
02541
02542
02543 if (!do_track_reservation) return best_track;
02544
02545
02546 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02547 if (mark_stuck) MarkTrainAsStuck(v);
02548 FreeTrainTrackReservation(v);
02549 return best_track;
02550 }
02551
02552
02553 if (res_dest.tile == INVALID_TILE) {
02554
02555 PBSTileInfo origin = FollowTrainReservation(v);
02556 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02557 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02558 best_track = FindFirstTrack(res);
02559 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02560 if (got_reservation != NULL) *got_reservation = true;
02561 if (changed_signal) MarkTileDirtyByTile(tile);
02562 } else {
02563 FreeTrainTrackReservation(v);
02564 if (mark_stuck) MarkTrainAsStuck(v);
02565 }
02566 return best_track;
02567 }
02568
02569 if (got_reservation != NULL) *got_reservation = true;
02570
02571
02572 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02573
02574 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02575 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02576 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02577 if (_settings_game.pf.forbid_90_deg) {
02578 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02579 }
02580
02581
02582 if (orders.SwitchToNextOrder(true)) {
02583 PBSTileInfo cur_dest;
02584 bool path_found;
02585 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02586 if (cur_dest.tile != INVALID_TILE) {
02587 res_dest = cur_dest;
02588 if (res_dest.okay) continue;
02589
02590 FreeTrainTrackReservation(v);
02591 if (mark_stuck) MarkTrainAsStuck(v);
02592 if (got_reservation != NULL) *got_reservation = false;
02593 changed_signal = false;
02594 break;
02595 }
02596 }
02597
02598 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02599 FreeTrainTrackReservation(v);
02600 if (mark_stuck) MarkTrainAsStuck(v);
02601 if (got_reservation != NULL) *got_reservation = false;
02602 changed_signal = false;
02603 }
02604 break;
02605 }
02606
02607 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02608
02609 if (changed_signal) MarkTileDirtyByTile(tile);
02610
02611 return best_track;
02612 }
02613
02622 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02623 {
02624 assert(v->IsFrontEngine());
02625
02626
02627
02628
02629 if (v->track == TRACK_BIT_DEPOT) {
02630 if (HasDepotReservation(v->tile)) {
02631 if (mark_as_stuck) MarkTrainAsStuck(v);
02632 return false;
02633 } else {
02634
02635 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02636 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02637 }
02638 }
02639
02640 Vehicle *other_train = NULL;
02641 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02642
02643
02644
02645
02646
02647 if (other_train != NULL && other_train->index != v->index) {
02648 if (mark_as_stuck) MarkTrainAsStuck(v);
02649 return false;
02650 }
02651
02652 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02653
02654 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02655 ClrBit(v->flags, VRF_TRAIN_STUCK);
02656 return true;
02657 }
02658
02659
02660 if (v->track == TRACK_BIT_DEPOT) {
02661 SetDepotReservation(v->tile, true);
02662 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02663 }
02664
02665 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02666 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02667 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02668
02669 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02670
02671 bool res_made = false;
02672 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02673
02674 if (!res_made) {
02675
02676 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02677 return false;
02678 }
02679
02680 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02681 v->wait_counter = 0;
02682 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02683 }
02684 ClrBit(v->flags, VRF_TRAIN_STUCK);
02685 return true;
02686 }
02687
02688
02689 static bool CheckReverseTrain(const Train *v)
02690 {
02691 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02692 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02693 !(v->direction & 1)) {
02694 return false;
02695 }
02696
02697 assert(v->track != TRACK_BIT_NONE);
02698
02699 switch (_settings_game.pf.pathfinder_for_trains) {
02700 case VPF_NPF: return NPFTrainCheckReverse(v);
02701 case VPF_YAPF: return YapfTrainCheckReverse(v);
02702
02703 default: NOT_REACHED();
02704 }
02705 }
02706
02712 TileIndex Train::GetOrderStationLocation(StationID station)
02713 {
02714 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02715
02716 const Station *st = Station::Get(station);
02717 if (!(st->facilities & FACIL_TRAIN)) {
02718
02719 this->IncrementRealOrderIndex();
02720 return 0;
02721 }
02722
02723 return st->xy;
02724 }
02725
02727 void Train::MarkDirty()
02728 {
02729 Train *v = this;
02730 do {
02731 v->UpdateViewport(false, false);
02732 } while ((v = v->Next()) != NULL);
02733
02734
02735 this->CargoChanged();
02736 this->UpdateAcceleration();
02737 }
02738
02746 int Train::UpdateSpeed()
02747 {
02748 switch (_settings_game.vehicle.train_acceleration_model) {
02749 default: NOT_REACHED();
02750 case AM_ORIGINAL:
02751 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->gcache.cached_max_track_speed);
02752
02753 case AM_REALISTIC:
02754 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02755 }
02756 }
02757
02763 static void TrainEnterStation(Train *v, StationID station)
02764 {
02765 v->last_station_visited = station;
02766
02767
02768 Station *st = Station::Get(station);
02769 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02770 st->had_vehicle_of_type |= HVOT_TRAIN;
02771 SetDParam(0, st->index);
02772 AddVehicleNewsItem(
02773 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02774 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
02775 v->index,
02776 st->index
02777 );
02778 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02779 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02780 }
02781
02782 v->force_proceed = TFP_NONE;
02783 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02784
02785 v->BeginLoading();
02786
02787 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02788 }
02789
02790
02791 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02792 {
02793 return IsTileOwner(tile, v->owner) &&
02794 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02795 }
02796
02798 struct RailtypeSlowdownParams {
02799 byte small_turn;
02800 byte large_turn;
02801 byte z_up;
02802 byte z_down;
02803 };
02804
02806 static const RailtypeSlowdownParams _railtype_slowdown[] = {
02807
02808 {256 / 4, 256 / 2, 256 / 4, 2},
02809 {256 / 4, 256 / 2, 256 / 4, 2},
02810 {256 / 4, 256 / 2, 256 / 4, 2},
02811 {0, 256 / 2, 256 / 4, 2},
02812 };
02813
02819 static inline void AffectSpeedByZChange(Train *v, int old_z)
02820 {
02821 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02822
02823 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
02824
02825 if (old_z < v->z_pos) {
02826 v->cur_speed -= (v->cur_speed * rsp->z_up >> 8);
02827 } else {
02828 uint16 spd = v->cur_speed + rsp->z_down;
02829 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02830 }
02831 }
02832
02833 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02834 {
02835 if (IsTileType(tile, MP_RAILWAY) &&
02836 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02837 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02838 Trackdir trackdir = FindFirstTrackdir(tracks);
02839 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02840
02841 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02842 }
02843 }
02844 return false;
02845 }
02846
02848 void Train::ReserveTrackUnderConsist() const
02849 {
02850 for (const Train *u = this; u != NULL; u = u->Next()) {
02851 switch (u->track) {
02852 case TRACK_BIT_WORMHOLE:
02853 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02854 break;
02855 case TRACK_BIT_DEPOT:
02856 break;
02857 default:
02858 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02859 break;
02860 }
02861 }
02862 }
02863
02870 uint Train::Crash(bool flooded)
02871 {
02872 uint pass = 0;
02873 if (this->IsFrontEngine()) {
02874 pass += 2;
02875
02876
02877
02878 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02879 for (const Train *v = this; v != NULL; v = v->Next()) {
02880 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02881 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02882
02883
02884 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02885 }
02886 }
02887
02888
02889
02890 TileIndex crossing = TrainApproachingCrossingTile(this);
02891 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02892
02893
02894 HideFillingPercent(&this->fill_percent_te_id);
02895 }
02896
02897 pass += this->GroundVehicleBase::Crash(flooded);
02898
02899 this->crash_anim_pos = flooded ? 4000 : 1;
02900 return pass;
02901 }
02902
02909 static uint TrainCrashed(Train *v)
02910 {
02911 uint num = 0;
02912
02913
02914 if (!(v->vehstatus & VS_CRASHED)) {
02915 num = v->Crash();
02916 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02917 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02918 }
02919
02920
02921
02922 v->ReserveTrackUnderConsist();
02923
02924 return num;
02925 }
02926
02928 struct TrainCollideChecker {
02929 Train *v;
02930 uint num;
02931 };
02932
02939 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02940 {
02941 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02942
02943
02944 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02945
02946
02947 if (v->owner != tcc->v->owner) return NULL;
02948
02949
02950 Train *coll = Train::From(v)->First();
02951
02952
02953 if (coll == tcc->v) return NULL;
02954
02955 int x_diff = v->x_pos - tcc->v->x_pos;
02956 int y_diff = v->y_pos - tcc->v->y_pos;
02957
02958
02959
02960
02961
02962 uint hash = (y_diff + 7) | (x_diff + 7);
02963 if (hash & ~15) return NULL;
02964
02965
02966 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02967 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
02968
02969
02970 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
02971
02972
02973 tcc->num += TrainCrashed(tcc->v);
02974 tcc->num += TrainCrashed(coll);
02975
02976 return NULL;
02977 }
02978
02986 static bool CheckTrainCollision(Train *v)
02987 {
02988
02989 if (v->track == TRACK_BIT_DEPOT) return false;
02990
02991 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
02992
02993 TrainCollideChecker tcc;
02994 tcc.v = v;
02995 tcc.num = 0;
02996
02997
02998 if (v->track == TRACK_BIT_WORMHOLE) {
02999 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03000 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03001 } else {
03002 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03003 }
03004
03005
03006 if (tcc.num == 0) return false;
03007
03008 SetDParam(0, tcc.num);
03009 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
03010 NS_ACCIDENT,
03011 v->index
03012 );
03013
03014 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03015 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03016 return true;
03017 }
03018
03019 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03020 {
03021 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03022
03023 Train *t = Train::From(v);
03024 DiagDirection exitdir = *(DiagDirection *)data;
03025
03026
03027 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03028
03029 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03030
03031 return t;
03032 }
03033
03041 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03042 {
03043 Train *first = v->First();
03044 Train *prev;
03045 bool direction_changed = false;
03046
03047
03048 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03049 DiagDirection enterdir = DIAGDIR_BEGIN;
03050 bool update_signals_crossing = false;
03051
03052 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03053 if (v->track != TRACK_BIT_WORMHOLE) {
03054
03055 if (gp.old_tile == gp.new_tile) {
03056
03057 if (v->track == TRACK_BIT_DEPOT) {
03058
03059 gp.x = v->x_pos;
03060 gp.y = v->y_pos;
03061 } else {
03062
03063
03064
03065 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03066
03067 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03068 if (HasBit(r, VETS_CANNOT_ENTER)) {
03069 goto invalid_rail;
03070 }
03071 if (HasBit(r, VETS_ENTERED_STATION)) {
03072
03073 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03074 }
03075 }
03076 } else {
03077
03078
03079
03080 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03081 assert(IsValidDiagDirection(enterdir));
03082
03083
03084
03085 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03086 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03087
03088 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03089 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03090
03091 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03092 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03093
03094
03095 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03096 }
03097
03098 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03099
03100
03101
03102 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03103
03104 TrackBits chosen_track;
03105 if (prev == NULL) {
03106
03107
03108 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03109 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03110
03111 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03112
03113
03114
03115
03116 Trackdir dir = FindFirstTrackdir(trackdirbits);
03117 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03118 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03119
03120
03121 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03122 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03123 }
03124 }
03125
03126
03127 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03128
03129 Trackdir i = FindFirstTrackdir(trackdirbits);
03130
03131
03132 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03133
03134 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03135 v->cur_speed = 0;
03136 v->subspeed = 0;
03137 v->progress = 255 - 100;
03138 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03139 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03140 v->cur_speed = 0;
03141 v->subspeed = 0;
03142 v->progress = 255 - 10;
03143 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03144 DiagDirection exitdir = TrackdirToExitdir(i);
03145 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03146
03147 exitdir = ReverseDiagDir(exitdir);
03148
03149
03150 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03151 }
03152 }
03153
03154
03155
03156
03157
03158 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03159 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03160 v->wait_counter = 0;
03161 return false;
03162 }
03163 goto reverse_train_direction;
03164 } else {
03165 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03166 }
03167 } else {
03168
03169 if (prev->tile == gp.new_tile) {
03170
03171 if (prev->track == TRACK_BIT_WORMHOLE) {
03172
03173
03174 assert(IsTunnel(prev->tile));
03175 chosen_track = bits;
03176 } else {
03177 chosen_track = prev->track;
03178 }
03179 } else {
03180
03181
03182
03183
03184
03185
03186
03187 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03188 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03189 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03190 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03191 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03192 };
03193 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03194 assert(IsValidDiagDirection(exitdir));
03195 chosen_track = _connecting_track[enterdir][exitdir];
03196 }
03197 chosen_track &= bits;
03198 }
03199
03200
03201 assert(
03202 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03203 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03204 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03205
03206
03207 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03208 gp.x = (gp.x & ~0xF) | b[0];
03209 gp.y = (gp.y & ~0xF) | b[1];
03210 Direction chosen_dir = (Direction)b[2];
03211
03212
03213 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03214 if (HasBit(r, VETS_CANNOT_ENTER)) {
03215 goto invalid_rail;
03216 }
03217
03218 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03219 Track track = FindFirstTrack(chosen_track);
03220 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03221 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03222 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03223 MarkTileDirtyByTile(gp.new_tile);
03224 }
03225
03226
03227 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03228
03229 v->tile = gp.new_tile;
03230
03231 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03232 v->First()->ConsistChanged(true);
03233 }
03234
03235 v->track = chosen_track;
03236 assert(v->track);
03237 }
03238
03239
03240
03241 update_signals_crossing = true;
03242
03243 if (chosen_dir != v->direction) {
03244 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03245 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03246 DirDiff diff = DirDifference(v->direction, chosen_dir);
03247 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? rsp->small_turn : rsp->large_turn) * v->cur_speed >> 8;
03248 }
03249 direction_changed = true;
03250 v->direction = chosen_dir;
03251 }
03252
03253 if (v->IsFrontEngine()) {
03254 v->wait_counter = 0;
03255
03256
03257 TileIndex crossing = TrainApproachingCrossingTile(v);
03258 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03259
03260
03261 CheckNextTrainTile(v);
03262 }
03263
03264 if (HasBit(r, VETS_ENTERED_STATION)) {
03265
03266 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03267 }
03268 }
03269 } else {
03270
03271
03272
03273 if (!(v->vehstatus & VS_HIDDEN)) {
03274 Train *first = v->First();
03275 first->cur_speed = min(first->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03276 }
03277
03278 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03279
03280 if (v->IsFrontEngine()) {
03281 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03282 CheckNextTrainTile(v);
03283 }
03284
03285
03286 if (gp.old_tile == gp.new_tile) {
03287 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03288 }
03289 } else {
03290 v->x_pos = gp.x;
03291 v->y_pos = gp.y;
03292 VehicleUpdatePosition(v);
03293 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03294 continue;
03295 }
03296 }
03297
03298
03299 v->UpdateDeltaXY(v->direction);
03300
03301 v->x_pos = gp.x;
03302 v->y_pos = gp.y;
03303 VehicleUpdatePosition(v);
03304
03305
03306 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03307
03308 if (prev == NULL) {
03309
03310 AffectSpeedByZChange(v, old_z);
03311 }
03312
03313 if (update_signals_crossing) {
03314 if (v->IsFrontEngine()) {
03315 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03316
03317
03318
03319
03320
03321
03322
03323
03324 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03325 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03326 !TryPathReserve(v)) {
03327 MarkTrainAsStuck(v);
03328 }
03329 }
03330 }
03331
03332
03333
03334 if (v->Next() == NULL) {
03335 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03336 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03337 }
03338 }
03339
03340
03341 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03342 }
03343
03344 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03345
03346 return true;
03347
03348 invalid_rail:
03349
03350 if (prev != NULL) error("Disconnecting train");
03351
03352 reverse_train_direction:
03353 if (reverse) {
03354 v->wait_counter = 0;
03355 v->cur_speed = 0;
03356 v->subspeed = 0;
03357 ReverseTrainDirection(v);
03358 }
03359
03360 return false;
03361 }
03362
03369 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03370 {
03371 TrackBits *trackbits = (TrackBits *)data;
03372
03373 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03374 TrackBits train_tbits = Train::From(v)->track;
03375 if (train_tbits == TRACK_BIT_WORMHOLE) {
03376
03377 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03378 } else if (train_tbits != TRACK_BIT_DEPOT) {
03379 *trackbits |= train_tbits;
03380 }
03381 }
03382
03383 return NULL;
03384 }
03385
03393 static void DeleteLastWagon(Train *v)
03394 {
03395 Train *first = v->First();
03396
03397
03398
03399
03400 Train *u = v;
03401 for (; v->Next() != NULL; v = v->Next()) u = v;
03402 u->SetNext(NULL);
03403
03404 if (first != v) {
03405
03406 first->ConsistChanged(false);
03407
03408
03409 if (first->track == TRACK_BIT_DEPOT) {
03410 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03411 }
03412 }
03413
03414
03415 TrackBits trackbits = v->track;
03416 TileIndex tile = v->tile;
03417 Owner owner = v->owner;
03418
03419 delete v;
03420 v = NULL;
03421
03422 if (trackbits == TRACK_BIT_WORMHOLE) {
03423
03424 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03425 }
03426
03427 Track track = TrackBitsToTrack(trackbits);
03428 if (HasReservedTracks(tile, trackbits)) {
03429 UnreserveRailTrack(tile, track);
03430
03431
03432 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03433 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03434
03435
03436 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03437 Track t;
03438 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03439 }
03440
03441
03442 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03443
03444
03445 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03446 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03447 } else {
03448 SetSignalsOnBothDir(tile, track, owner);
03449 }
03450 }
03451
03456 static void ChangeTrainDirRandomly(Train *v)
03457 {
03458 static const DirDiff delta[] = {
03459 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03460 };
03461
03462 do {
03463
03464 if (!(v->vehstatus & VS_HIDDEN)) {
03465 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03466 v->UpdateDeltaXY(v->direction);
03467 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03468
03469
03470
03471 if (v->track != TRACK_BIT_WORMHOLE) {
03472 VehicleUpdatePosition(v);
03473 v->UpdateInclination(false, false);
03474 }
03475 }
03476 } while ((v = v->Next()) != NULL);
03477 }
03478
03484 static bool HandleCrashedTrain(Train *v)
03485 {
03486 int state = ++v->crash_anim_pos;
03487
03488 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03489 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03490 }
03491
03492 uint32 r;
03493 if (state <= 200 && Chance16R(1, 7, r)) {
03494 int index = (r * 10 >> 16);
03495
03496 Vehicle *u = v;
03497 do {
03498 if (--index < 0) {
03499 r = Random();
03500
03501 CreateEffectVehicleRel(u,
03502 GB(r, 8, 3) + 2,
03503 GB(r, 16, 3) + 2,
03504 GB(r, 0, 3) + 5,
03505 EV_EXPLOSION_SMALL);
03506 break;
03507 }
03508 } while ((u = u->Next()) != NULL);
03509 }
03510
03511 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03512
03513 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03514 bool ret = v->Next() != NULL;
03515 DeleteLastWagon(v);
03516 return ret;
03517 }
03518
03519 return true;
03520 }
03521
03523 static const uint16 _breakdown_speeds[16] = {
03524 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03525 };
03526
03527
03536 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03537 {
03538
03539 uint x = v->x_pos & 0xF;
03540 uint y = v->y_pos & 0xF;
03541
03542
03543
03544 switch (v->direction) {
03545 case DIR_N : x = ~x + ~y + 25; break;
03546 case DIR_NW: x = y;
03547 case DIR_NE: x = ~x + 16; break;
03548 case DIR_E : x = ~x + y + 9; break;
03549 case DIR_SE: x = y; break;
03550 case DIR_S : x = x + y - 7; break;
03551 case DIR_W : x = ~y + x + 9; break;
03552 default: break;
03553 }
03554
03555
03556
03557
03558
03559
03560 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03561
03562 v->cur_speed = 0;
03563 if (reverse) ReverseTrainDirection(v);
03564 return false;
03565 }
03566
03567
03568 v->vehstatus |= VS_TRAIN_SLOWING;
03569 uint16 break_speed = _breakdown_speeds[x & 0xF];
03570 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03571
03572 return true;
03573 }
03574
03575
03581 static bool TrainCanLeaveTile(const Train *v)
03582 {
03583
03584 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03585
03586 TileIndex tile = v->tile;
03587
03588
03589 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03590 DiagDirection dir = GetTunnelBridgeDirection(tile);
03591 if (DiagDirToDir(dir) == v->direction) return false;
03592 }
03593
03594
03595 if (IsRailDepotTile(tile)) {
03596 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03597 if (DiagDirToDir(dir) == v->direction) return false;
03598 }
03599
03600 return true;
03601 }
03602
03603
03611 static TileIndex TrainApproachingCrossingTile(const Train *v)
03612 {
03613 assert(v->IsFrontEngine());
03614 assert(!(v->vehstatus & VS_CRASHED));
03615
03616 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03617
03618 DiagDirection dir = TrainExitDir(v->direction, v->track);
03619 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03620
03621
03622 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03623 !CheckCompatibleRail(v, tile)) {
03624 return INVALID_TILE;
03625 }
03626
03627 return tile;
03628 }
03629
03630
03638 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03639 {
03640
03641
03642 int t = v->breakdown_ctr;
03643 if (t > 1) {
03644 v->vehstatus |= VS_TRAIN_SLOWING;
03645
03646 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03647 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03648 } else {
03649 v->vehstatus &= ~VS_TRAIN_SLOWING;
03650 }
03651
03652 if (!TrainCanLeaveTile(v)) return true;
03653
03654
03655 DiagDirection dir = TrainExitDir(v->direction, v->track);
03656
03657 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03658
03659
03660 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03661 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03662
03663 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03664 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03665
03666
03667
03668
03669 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03670 if (_settings_game.pf.forbid_90_deg) {
03671 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03672 }
03673
03674
03675 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03676 return TrainApproachingLineEnd(v, false, reverse);
03677 }
03678
03679
03680 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03681
03682
03683 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03684
03685 return true;
03686 }
03687
03688
03689 static bool TrainLocoHandler(Train *v, bool mode)
03690 {
03691
03692 if (v->vehstatus & VS_CRASHED) {
03693 return mode ? true : HandleCrashedTrain(v);
03694 }
03695
03696 if (v->force_proceed != TFP_NONE) {
03697 ClrBit(v->flags, VRF_TRAIN_STUCK);
03698 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03699 }
03700
03701
03702 if (v->HandleBreakdown()) return true;
03703
03704 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03705 ReverseTrainDirection(v);
03706 }
03707
03708
03709 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03710
03711 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03712 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03713 v->wait_counter = 0;
03714 v->cur_speed = 0;
03715 v->subspeed = 0;
03716 ClrBit(v->flags, VRF_LEAVING_STATION);
03717 ReverseTrainDirection(v);
03718 return true;
03719 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03720
03721
03722
03723 DiagDirection dir = TrainExitDir(v->direction, v->track);
03724 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03725
03726 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03727 TryPathReserve(v, true, true);
03728 }
03729 ClrBit(v->flags, VRF_LEAVING_STATION);
03730 }
03731
03732 v->HandleLoading(mode);
03733
03734 if (v->current_order.IsType(OT_LOADING)) return true;
03735
03736 if (CheckTrainStayInDepot(v)) return true;
03737
03738 if (!mode) v->ShowVisualEffect();
03739
03740
03741 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03742 CheckNextTrainTile(v);
03743 }
03744
03745
03746 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03747 ++v->wait_counter;
03748
03749
03750 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03751
03752 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03753 if (!TryPathReserve(v)) {
03754
03755 if (turn_around) ReverseTrainDirection(v);
03756
03757 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03758
03759 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03760 SetDParam(0, v->index);
03761 AddVehicleNewsItem(
03762 STR_NEWS_TRAIN_IS_STUCK,
03763 NS_ADVICE,
03764 v->index
03765 );
03766 }
03767 v->wait_counter = 0;
03768 }
03769
03770 if (v->force_proceed == TFP_NONE) return true;
03771 ClrBit(v->flags, VRF_TRAIN_STUCK);
03772 v->wait_counter = 0;
03773 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03774 }
03775 }
03776
03777 if (v->current_order.IsType(OT_LEAVESTATION)) {
03778 v->current_order.Free();
03779 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03780 return true;
03781 }
03782
03783 int j = v->UpdateSpeed();
03784
03785
03786 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03787
03788 v->force_proceed = TFP_NONE;
03789 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03790 }
03791
03792 int adv_spd = v->GetAdvanceDistance();
03793 if (j < adv_spd) {
03794
03795 if (v->cur_speed == 0) v->SetLastSpeed();
03796 } else {
03797 TrainCheckIfLineEnds(v);
03798
03799 for (;;) {
03800 j -= adv_spd;
03801 TrainController(v, NULL);
03802
03803 if (CheckTrainCollision(v)) break;
03804
03805 adv_spd = v->GetAdvanceDistance();
03806
03807
03808 if (j < adv_spd || v->cur_speed == 0) break;
03809
03810 OrderType order_type = v->current_order.GetType();
03811
03812 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03813 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03814 IsTileType(v->tile, MP_STATION) &&
03815 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03816 ProcessOrders(v);
03817 }
03818 }
03819 v->SetLastSpeed();
03820 }
03821
03822 for (Train *u = v; u != NULL; u = u->Next()) {
03823 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03824
03825 u->UpdateViewport(false, false);
03826 }
03827
03828 if (v->progress == 0) v->progress = j;
03829
03830 return true;
03831 }
03832
03837 Money Train::GetRunningCost() const
03838 {
03839 Money cost = 0;
03840 const Train *v = this;
03841
03842 do {
03843 const Engine *e = v->GetEngine();
03844 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03845
03846 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03847 if (cost_factor == 0) continue;
03848
03849
03850 if (v->IsMultiheaded()) cost_factor /= 2;
03851
03852 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03853 } while ((v = v->GetNextVehicle()) != NULL);
03854
03855 return cost;
03856 }
03857
03862 bool Train::Tick()
03863 {
03864 this->tick_counter++;
03865
03866 if (this->IsFrontEngine()) {
03867 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03868
03869 this->current_order_time++;
03870
03871 if (!TrainLocoHandler(this, false)) return false;
03872
03873 return TrainLocoHandler(this, true);
03874 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03875
03876 if (++this->crash_anim_pos >= 4400) {
03877 delete this;
03878 return false;
03879 }
03880 }
03881
03882 return true;
03883 }
03884
03889 static void CheckIfTrainNeedsService(Train *v)
03890 {
03891 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03892 if (v->IsInDepot()) {
03893 VehicleServiceInDepot(v);
03894 return;
03895 }
03896
03897 uint max_penalty;
03898 switch (_settings_game.pf.pathfinder_for_trains) {
03899 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03900 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03901 default: NOT_REACHED();
03902 }
03903
03904 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03905
03906 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03907 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03908
03909
03910
03911 v->current_order.MakeDummy();
03912 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03913 }
03914 return;
03915 }
03916
03917 DepotID depot = GetDepotIndex(tfdd.tile);
03918
03919 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03920 v->current_order.GetDestination() != depot &&
03921 !Chance16(3, 16)) {
03922 return;
03923 }
03924
03925 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03926 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03927 v->dest_tile = tfdd.tile;
03928 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03929 }
03930
03932 void Train::OnNewDay()
03933 {
03934 AgeVehicle(this);
03935
03936 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03937
03938 if (this->IsFrontEngine()) {
03939 CheckVehicleBreakdown(this);
03940
03941 CheckIfTrainNeedsService(this);
03942
03943 CheckOrders(this);
03944
03945
03946 if (this->current_order.IsType(OT_GOTO_STATION)) {
03947 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03948 if (tile != INVALID_TILE) this->dest_tile = tile;
03949 }
03950
03951 if (this->running_ticks != 0) {
03952
03953 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03954
03955 this->profit_this_year -= cost.GetCost();
03956 this->running_ticks = 0;
03957
03958 SubtractMoneyFromCompanyFract(this->owner, cost);
03959
03960 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03961 SetWindowClassesDirty(WC_TRAINS_LIST);
03962 }
03963 }
03964 }
03965
03970 Trackdir Train::GetVehicleTrackdir() const
03971 {
03972 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03973
03974 if (this->track == TRACK_BIT_DEPOT) {
03975
03976 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03977 }
03978
03979 if (this->track == TRACK_BIT_WORMHOLE) {
03980
03981 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03982 }
03983
03984 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
03985 }