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00012 #include "stdafx.h"
00013 #include "gui.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 "vehicle_gui.h"
00021 #include "newgrf_sound.h"
00022 #include "newgrf_text.h"
00023 #include "group.h"
00024 #include "strings_func.h"
00025 #include "viewport_func.h"
00026 #include "window_func.h"
00027 #include "vehicle_func.h"
00028 #include "sound_func.h"
00029 #include "ai/ai.hpp"
00030 #include "newgrf_station.h"
00031 #include "effectvehicle_func.h"
00032 #include "gamelog.h"
00033 #include "network/network.h"
00034 #include "spritecache.h"
00035 #include "core/random_func.hpp"
00036 #include "company_base.h"
00037 #include "newgrf.h"
00038 #include "order_backup.h"
00039 #include "zoom_func.h"
00040
00041 #include "table/strings.h"
00042 #include "table/train_cmd.h"
00043
00044 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00045 static bool TrainCheckIfLineEnds(Train *v, bool reverse = true);
00046 bool TrainController(Train *v, Vehicle *nomove, bool reverse = true);
00047 static TileIndex TrainApproachingCrossingTile(const Train *v);
00048 static void CheckIfTrainNeedsService(Train *v);
00049 static void CheckNextTrainTile(Train *v);
00050
00051 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00052 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00053
00054
00062 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00063 {
00064 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00065
00066 DiagDirection diagdir = DirToDiagDir(direction);
00067
00068
00069 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00070 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00071 }
00072
00073 return diagdir;
00074 }
00075
00076
00082 byte FreightWagonMult(CargoID cargo)
00083 {
00084 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00085 return _settings_game.vehicle.freight_trains;
00086 }
00087
00089 void CheckTrainsLengths()
00090 {
00091 const Train *v;
00092 bool first = true;
00093
00094 FOR_ALL_TRAINS(v) {
00095 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00096 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00097 if (u->track != TRACK_BIT_DEPOT) {
00098 if ((w->track != TRACK_BIT_DEPOT &&
00099 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->CalcNextVehicleOffset()) ||
00100 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00101 SetDParam(0, v->index);
00102 SetDParam(1, v->owner);
00103 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00104
00105 if (!_networking && first) {
00106 first = false;
00107 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00108 }
00109
00110 break;
00111 }
00112 }
00113 }
00114 }
00115 }
00116 }
00117
00122 void Train::RailtypeChanged()
00123 {
00124 for (Train *u = this; u != NULL; u = u->Next()) {
00125
00126 u->UpdateVisualEffect(false);
00127 }
00128 this->PowerChanged();
00129 if (this->IsFrontEngine()) this->UpdateAcceleration();
00130 }
00131
00138 void Train::ConsistChanged(bool same_length)
00139 {
00140 uint16 max_speed = UINT16_MAX;
00141
00142 assert(this->IsFrontEngine() || this->IsFreeWagon());
00143
00144 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00145 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00146 this->gcache.cached_total_length = 0;
00147 this->compatible_railtypes = RAILTYPES_NONE;
00148
00149 bool train_can_tilt = true;
00150
00151 for (Train *u = this; u != NULL; u = u->Next()) {
00152 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00153
00154
00155 assert(u->First() == this);
00156
00157
00158 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00159 u->railtype = rvi_u->railtype;
00160
00161 if (u->IsEngine()) first_engine = u->engine_type;
00162
00163
00164 u->tcache.user_def_data = rvi_u->user_def_data;
00165 this->InvalidateNewGRFCache();
00166 u->InvalidateNewGRFCache();
00167 }
00168
00169 for (Train *u = this; u != NULL; u = u->Next()) {
00170
00171 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00172 this->InvalidateNewGRFCache();
00173 u->InvalidateNewGRFCache();
00174 }
00175
00176 for (Train *u = this; u != NULL; u = u->Next()) {
00177 const Engine *e_u = u->GetEngine();
00178 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00179
00180 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00181
00182
00183 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00184
00185
00186 u->colourmap = PAL_NONE;
00187
00188
00189 u->UpdateVisualEffect(true);
00190
00191 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00192 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00193
00194 SetBit(u->flags, VRF_POWEREDWAGON);
00195 } else {
00196 ClrBit(u->flags, VRF_POWEREDWAGON);
00197 }
00198
00199 if (!u->IsArticulatedPart()) {
00200
00201
00202 if (rvi_u->power > 0) {
00203 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00204 }
00205
00206
00207
00208 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00209 u->railtype = RAILTYPE_RAIL;
00210 u->compatible_railtypes |= RAILTYPES_RAIL;
00211 }
00212
00213
00214 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00215 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00216 if (speed != 0) max_speed = min(speed, max_speed);
00217 }
00218 }
00219
00220 u->cargo_cap = e_u->DetermineCapacity(u);
00221 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00222
00223
00224 uint16 veh_len = CALLBACK_FAILED;
00225 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00226
00227 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00228 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00229
00230 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00231 }
00232 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00233 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00234 }
00235 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00236 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00237
00238
00239 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00240
00241
00242 if (!same_length) u->gcache.cached_veh_length = veh_len;
00243
00244 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00245 this->InvalidateNewGRFCache();
00246 u->InvalidateNewGRFCache();
00247 }
00248
00249
00250 this->vcache.cached_max_speed = max_speed;
00251 this->tcache.cached_tilt = train_can_tilt;
00252 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00253
00254
00255 this->CargoChanged();
00256
00257 if (this->IsFrontEngine()) {
00258 this->UpdateAcceleration();
00259 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00260 InvalidateWindowData(WC_VEHICLE_REFIT, this->index);
00261 }
00262 }
00263
00274 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00275 {
00276 const Station *st = Station::Get(station_id);
00277 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00278 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00279
00280
00281
00282 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00283 if (v->gcache.cached_total_length >= *station_length) {
00284
00285 osl = OSL_PLATFORM_FAR_END;
00286 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00287 osl = v->current_order.GetStopLocation();
00288 }
00289
00290
00291 int stop;
00292 switch (osl) {
00293 default: NOT_REACHED();
00294
00295 case OSL_PLATFORM_NEAR_END:
00296 stop = v->gcache.cached_total_length;
00297 break;
00298
00299 case OSL_PLATFORM_MIDDLE:
00300 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00301 break;
00302
00303 case OSL_PLATFORM_FAR_END:
00304 stop = *station_length;
00305 break;
00306 }
00307
00308
00309
00310 return stop - (v->gcache.cached_veh_length + 1) / 2;
00311 }
00312
00313
00318 int Train::GetCurveSpeedLimit() const
00319 {
00320 assert(this->First() == this);
00321
00322 static const int absolute_max_speed = UINT16_MAX;
00323 int max_speed = absolute_max_speed;
00324
00325 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00326
00327 int curvecount[2] = {0, 0};
00328
00329
00330 int numcurve = 0;
00331 int sum = 0;
00332 int pos = 0;
00333 int lastpos = -1;
00334 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00335 Direction this_dir = u->direction;
00336 Direction next_dir = u->Next()->direction;
00337
00338 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00339 if (dirdiff == DIRDIFF_SAME) continue;
00340
00341 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00342 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00343 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00344 if (lastpos != -1) {
00345 numcurve++;
00346 sum += pos - lastpos;
00347 if (pos - lastpos == 1 && max_speed > 88) {
00348 max_speed = 88;
00349 }
00350 }
00351 lastpos = pos;
00352 }
00353
00354
00355 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00356 max_speed = 61;
00357 }
00358 }
00359
00360 if (numcurve > 0 && max_speed > 88) {
00361 if (curvecount[0] == 1 && curvecount[1] == 1) {
00362 max_speed = absolute_max_speed;
00363 } else {
00364 sum /= numcurve;
00365 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00366 }
00367 }
00368
00369 if (max_speed != absolute_max_speed) {
00370
00371 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00372 max_speed += (max_speed / 2) * rti->curve_speed;
00373
00374 if (this->tcache.cached_tilt) {
00375
00376 max_speed += max_speed / 5;
00377 }
00378 }
00379
00380 return max_speed;
00381 }
00382
00387 int Train::GetCurrentMaxSpeed() const
00388 {
00389 int max_speed = this->tcache.cached_max_curve_speed;
00390 assert(max_speed == this->GetCurveSpeedLimit());
00391
00392 if (IsRailStationTile(this->tile)) {
00393 StationID sid = GetStationIndex(this->tile);
00394 if (this->current_order.ShouldStopAtStation(this, sid)) {
00395 int station_ahead;
00396 int station_length;
00397 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00398
00399
00400
00401 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00402
00403 if (distance_to_go > 0) {
00404 int st_max_speed = 120;
00405
00406 int delta_v = this->cur_speed / (distance_to_go + 1);
00407 if (max_speed > (this->cur_speed - delta_v)) {
00408 st_max_speed = this->cur_speed - (delta_v / 10);
00409 }
00410
00411 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00412 max_speed = min(max_speed, st_max_speed);
00413 }
00414 }
00415 }
00416
00417 for (const Train *u = this; u != NULL; u = u->Next()) {
00418 if (u->track == TRACK_BIT_DEPOT) {
00419 max_speed = min(max_speed, 61);
00420 break;
00421 }
00422 }
00423
00424 return min(max_speed, this->gcache.cached_max_track_speed);
00425 }
00426
00427 void Train::UpdateAcceleration()
00428 {
00429 assert(this->IsFrontEngine());
00430
00431 uint power = this->gcache.cached_power;
00432 uint weight = this->gcache.cached_weight;
00433 assert(weight != 0);
00434 this->acceleration = Clamp(power / weight * 4, 1, 255);
00435 }
00436
00442 int Train::GetDisplayImageWidth(Point *offset) const
00443 {
00444 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00445 int vehicle_pitch = 0;
00446
00447 const Engine *e = this->GetEngine();
00448 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00449 reference_width = e->GetGRF()->traininfo_vehicle_width;
00450 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00451 }
00452
00453 if (offset != NULL) {
00454 offset->x = reference_width / 2;
00455 offset->y = vehicle_pitch;
00456 }
00457 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00458 }
00459
00460 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00461 {
00462 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00463 }
00464
00465 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00466 {
00467 uint8 spritenum = this->spritenum;
00468 SpriteID sprite;
00469
00470 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00471
00472 if (is_custom_sprite(spritenum)) {
00473 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00474 if (sprite != 0) return sprite;
00475
00476 spritenum = this->GetEngine()->original_image_index;
00477 }
00478
00479 sprite = GetDefaultTrainSprite(spritenum, direction);
00480
00481 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00482
00483 return sprite;
00484 }
00485
00486 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00487 {
00488 const Engine *e = Engine::Get(engine);
00489 Direction dir = rear_head ? DIR_E : DIR_W;
00490 uint8 spritenum = e->u.rail.image_index;
00491
00492 if (is_custom_sprite(spritenum)) {
00493 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00494 if (sprite != 0) {
00495 if (e->GetGRF() != NULL) {
00496 y += e->GetGRF()->traininfo_vehicle_pitch;
00497 }
00498 return sprite;
00499 }
00500
00501 spritenum = Engine::Get(engine)->original_image_index;
00502 }
00503
00504 if (rear_head) spritenum++;
00505
00506 return GetDefaultTrainSprite(spritenum, DIR_W);
00507 }
00508
00509 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00510 {
00511 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00512 int yf = y;
00513 int yr = y;
00514
00515 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00516 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00517 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00518 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00519
00520 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);
00521
00522 DrawSprite(spritef, pal, preferred_x - 14, yf);
00523 DrawSprite(spriter, pal, preferred_x + 15, yr);
00524 } else {
00525 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00526 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00527 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));
00528 DrawSprite(sprite, pal, preferred_x, y);
00529 }
00530 }
00531
00540 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00541 {
00542 const RailVehicleInfo *rvi = &e->u.rail;
00543
00544
00545 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00546
00547 if (flags & DC_EXEC) {
00548 Train *v = new Train();
00549 *ret = v;
00550 v->spritenum = rvi->image_index;
00551
00552 v->engine_type = e->index;
00553 v->gcache.first_engine = INVALID_ENGINE;
00554
00555 DiagDirection dir = GetRailDepotDirection(tile);
00556
00557 v->direction = DiagDirToDir(dir);
00558 v->tile = tile;
00559
00560 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00561 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00562
00563 v->x_pos = x;
00564 v->y_pos = y;
00565 v->z_pos = GetSlopePixelZ(x, y);
00566 v->owner = _current_company;
00567 v->track = TRACK_BIT_DEPOT;
00568 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00569
00570 v->SetWagon();
00571
00572 v->SetFreeWagon();
00573 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00574
00575 v->cargo_type = e->GetDefaultCargoType();
00576 v->cargo_cap = rvi->capacity;
00577
00578 v->railtype = rvi->railtype;
00579
00580 v->build_year = _cur_year;
00581 v->cur_image = SPR_IMG_QUERY;
00582 v->random_bits = VehicleRandomBits();
00583
00584 v->group_id = DEFAULT_GROUP;
00585
00586 AddArticulatedParts(v);
00587
00588 _new_vehicle_id = v->index;
00589
00590 VehicleMove(v, false);
00591 v->First()->ConsistChanged(false);
00592 UpdateTrainGroupID(v->First());
00593
00594 CheckConsistencyOfArticulatedVehicle(v);
00595
00596
00597 Train *w;
00598 FOR_ALL_TRAINS(w) {
00599 if (w->tile == tile &&
00600 w->IsFreeWagon() &&
00601 w->engine_type == e->index &&
00602 w->First() != v &&
00603 !(w->vehstatus & VS_CRASHED)) {
00604 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00605 break;
00606 }
00607 }
00608 }
00609
00610 return CommandCost();
00611 }
00612
00614 static void NormalizeTrainVehInDepot(const Train *u)
00615 {
00616 const Train *v;
00617 FOR_ALL_TRAINS(v) {
00618 if (v->IsFreeWagon() && v->tile == u->tile &&
00619 v->track == TRACK_BIT_DEPOT) {
00620 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00621 CMD_MOVE_RAIL_VEHICLE).Failed())
00622 break;
00623 }
00624 }
00625 }
00626
00627 static void AddRearEngineToMultiheadedTrain(Train *v)
00628 {
00629 Train *u = new Train();
00630 v->value >>= 1;
00631 u->value = v->value;
00632 u->direction = v->direction;
00633 u->owner = v->owner;
00634 u->tile = v->tile;
00635 u->x_pos = v->x_pos;
00636 u->y_pos = v->y_pos;
00637 u->z_pos = v->z_pos;
00638 u->track = TRACK_BIT_DEPOT;
00639 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00640 u->spritenum = v->spritenum + 1;
00641 u->cargo_type = v->cargo_type;
00642 u->cargo_subtype = v->cargo_subtype;
00643 u->cargo_cap = v->cargo_cap;
00644 u->railtype = v->railtype;
00645 u->engine_type = v->engine_type;
00646 u->build_year = v->build_year;
00647 u->cur_image = SPR_IMG_QUERY;
00648 u->random_bits = VehicleRandomBits();
00649 v->SetMultiheaded();
00650 u->SetMultiheaded();
00651 v->SetNext(u);
00652 VehicleMove(u, false);
00653
00654
00655 v->other_multiheaded_part = u;
00656 u->other_multiheaded_part = v;
00657 }
00658
00668 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00669 {
00670 const RailVehicleInfo *rvi = &e->u.rail;
00671
00672 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00673
00674
00675
00676 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00677
00678 if (flags & DC_EXEC) {
00679 DiagDirection dir = GetRailDepotDirection(tile);
00680 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00681 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00682
00683 Train *v = new Train();
00684 *ret = v;
00685 v->direction = DiagDirToDir(dir);
00686 v->tile = tile;
00687 v->owner = _current_company;
00688 v->x_pos = x;
00689 v->y_pos = y;
00690 v->z_pos = GetSlopePixelZ(x, y);
00691 v->track = TRACK_BIT_DEPOT;
00692 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00693 v->spritenum = rvi->image_index;
00694 v->cargo_type = e->GetDefaultCargoType();
00695 v->cargo_cap = rvi->capacity;
00696 v->last_station_visited = INVALID_STATION;
00697 v->last_loading_station = INVALID_STATION;
00698
00699 v->engine_type = e->index;
00700 v->gcache.first_engine = INVALID_ENGINE;
00701
00702 v->reliability = e->reliability;
00703 v->reliability_spd_dec = e->reliability_spd_dec;
00704 v->max_age = e->GetLifeLengthInDays();
00705
00706 v->railtype = rvi->railtype;
00707 _new_vehicle_id = v->index;
00708
00709 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00710 v->date_of_last_service = _date;
00711 v->build_year = _cur_year;
00712 v->cur_image = SPR_IMG_QUERY;
00713 v->random_bits = VehicleRandomBits();
00714
00715 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00716
00717 v->group_id = DEFAULT_GROUP;
00718
00719 v->SetFrontEngine();
00720 v->SetEngine();
00721
00722 VehicleMove(v, false);
00723
00724 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00725 AddRearEngineToMultiheadedTrain(v);
00726 } else {
00727 AddArticulatedParts(v);
00728 }
00729
00730 v->ConsistChanged(false);
00731 UpdateTrainGroupID(v);
00732
00733 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00734 NormalizeTrainVehInDepot(v);
00735 }
00736
00737 CheckConsistencyOfArticulatedVehicle(v);
00738 }
00739
00740 return CommandCost();
00741 }
00742
00743
00744 bool Train::IsInDepot() const
00745 {
00746
00747 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00748
00749
00750 for (const Train *v = this; v != NULL; v = v->Next()) {
00751 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00752 }
00753
00754 return true;
00755 }
00756
00757 bool Train::IsStoppedInDepot() const
00758 {
00759
00760 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00761 return this->IsInDepot();
00762 }
00763
00764 static Train *FindGoodVehiclePos(const Train *src)
00765 {
00766 EngineID eng = src->engine_type;
00767 TileIndex tile = src->tile;
00768
00769 Train *dst;
00770 FOR_ALL_TRAINS(dst) {
00771 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00772
00773 Train *t = dst;
00774 while (t->engine_type == eng) {
00775 t = t->Next();
00776 if (t == NULL) return dst;
00777 }
00778 }
00779 }
00780
00781 return NULL;
00782 }
00783
00785 typedef SmallVector<Train *, 16> TrainList;
00786
00792 static void MakeTrainBackup(TrainList &list, Train *t)
00793 {
00794 for (; t != NULL; t = t->Next()) *list.Append() = t;
00795 }
00796
00801 static void RestoreTrainBackup(TrainList &list)
00802 {
00803
00804 if (list.Length() == 0) return;
00805
00806 Train *prev = NULL;
00807
00808 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00809 Train *t = *iter;
00810 if (prev != NULL) {
00811 prev->SetNext(t);
00812 } else if (t->Previous() != NULL) {
00813
00814 t->Previous()->SetNext(NULL);
00815 }
00816 prev = t;
00817 }
00818 }
00819
00825 static void RemoveFromConsist(Train *part, bool chain = false)
00826 {
00827 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00828
00829
00830
00831 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00832
00833
00834 tail->SetNext(NULL);
00835 }
00836
00842 static void InsertInConsist(Train *dst, Train *chain)
00843 {
00844
00845 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00846
00847 chain->Last()->SetNext(dst->Next());
00848 dst->SetNext(chain);
00849 }
00850
00856 static void NormaliseDualHeads(Train *t)
00857 {
00858 for (; t != NULL; t = t->GetNextVehicle()) {
00859 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00860
00861
00862 Train *u;
00863 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00864
00865 if (u == t->other_multiheaded_part) continue;
00866
00867
00868 RemoveFromConsist(t->other_multiheaded_part);
00869
00870 InsertInConsist(u, t->other_multiheaded_part);
00871 }
00872 }
00873
00878 static void NormaliseSubtypes(Train *chain)
00879 {
00880
00881 if (chain == NULL) return;
00882
00883
00884 assert(chain->Previous() == NULL);
00885
00886
00887 if (chain->IsWagon()) {
00888 chain->SetFreeWagon();
00889 } else {
00890 assert(chain->IsEngine());
00891 chain->SetFrontEngine();
00892 }
00893
00894
00895 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00896 t->ClearFreeWagon();
00897 t->ClearFrontEngine();
00898 }
00899 }
00900
00910 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00911 {
00912
00913
00914
00915 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00916 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00917 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00918 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00919 return CommandCost();
00920 }
00921
00922
00923
00924 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00925
00926 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00927 }
00928
00934 static CommandCost CheckTrainAttachment(Train *t)
00935 {
00936
00937 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00938
00939
00940
00941 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00942
00943 Train *head = t;
00944 Train *prev = t;
00945
00946
00947 t = t->Next();
00948 prev->SetNext(NULL);
00949
00950
00951 head->InvalidateNewGRFCache();
00952
00953 while (t != NULL) {
00954 allowed_len -= t->gcache.cached_veh_length;
00955
00956 Train *next = t->Next();
00957
00958
00959
00960 t->SetNext(NULL);
00961
00962
00963 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00964
00965 EngineID first_engine = t->gcache.first_engine;
00966 t->gcache.first_engine = INVALID_ENGINE;
00967
00968
00969
00970 t->InvalidateNewGRFCache();
00971
00972 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00973
00974
00975 t->gcache.first_engine = first_engine;
00976
00977
00978 t->InvalidateNewGRFCache();
00979 head->InvalidateNewGRFCache();
00980
00981 if (callback != CALLBACK_FAILED) {
00982
00983 StringID error = STR_NULL;
00984
00985 if (t->GetGRF()->grf_version < 8) {
00986 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00987 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00988 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
00989 } else {
00990 if (callback < 0x400) {
00991 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00992 } else {
00993 switch (callback) {
00994 case 0x400:
00995 case 0x401:
00996 break;
00997
00998 default:
00999 case 0x402:
01000 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01001 break;
01002 }
01003 }
01004 }
01005
01006 if (error != STR_NULL) return_cmd_error(error);
01007 }
01008 }
01009
01010
01011 prev->SetNext(t);
01012 prev = t;
01013 t = next;
01014 }
01015
01016 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01017 return CommandCost();
01018 }
01019
01030 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01031 {
01032
01033 CommandCost ret = CheckTrainAttachment(src);
01034 if (ret.Failed()) return ret;
01035 ret = CheckTrainAttachment(dst);
01036 if (ret.Failed()) return ret;
01037
01038
01039 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01040 }
01041
01050 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01051 {
01052
01053 if (*src_head == *dst_head) {
01054
01055
01056 *dst_head = NULL;
01057 } else if (*dst_head == NULL) {
01058
01059
01060 *dst_head = src;
01061 }
01062
01063 if (src == *src_head) {
01064
01065
01066
01067
01068
01069
01070 *src_head = move_chain ? NULL :
01071 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01072 }
01073
01074
01075
01076
01077 RemoveFromConsist(src, move_chain);
01078 if (*dst_head != src) InsertInConsist(dst, src);
01079
01080
01081
01082 NormaliseDualHeads(*src_head);
01083 NormaliseDualHeads(*dst_head);
01084 }
01085
01091 static void NormaliseTrainHead(Train *head)
01092 {
01093
01094 if (head == NULL) return;
01095
01096
01097 head->ConsistChanged(false);
01098 UpdateTrainGroupID(head);
01099
01100
01101 if (!head->IsFrontEngine()) return;
01102
01103
01104 InvalidateWindowData(WC_VEHICLE_REFIT, head->index);
01105 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, VVW_WIDGET_REFIT_VEH);
01106
01107
01108 if (head->unitnumber != 0) return;
01109 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01110 }
01111
01124 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01125 {
01126 VehicleID s = GB(p1, 0, 20);
01127 VehicleID d = GB(p2, 0, 20);
01128 bool move_chain = HasBit(p1, 20);
01129
01130 Train *src = Train::GetIfValid(s);
01131 if (src == NULL) return CMD_ERROR;
01132
01133 CommandCost ret = CheckOwnership(src->owner);
01134 if (ret.Failed()) return ret;
01135
01136
01137 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01138
01139
01140 Train *dst;
01141 if (d == INVALID_VEHICLE) {
01142 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01143 } else {
01144 dst = Train::GetIfValid(d);
01145 if (dst == NULL) return CMD_ERROR;
01146
01147 CommandCost ret = CheckOwnership(dst->owner);
01148 if (ret.Failed()) return ret;
01149
01150
01151 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01152 }
01153
01154
01155 src = src->GetFirstEnginePart();
01156 if (dst != NULL) {
01157 dst = dst->GetFirstEnginePart();
01158 }
01159
01160
01161 if (src == dst) return CommandCost();
01162
01163
01164 Train *src_head = src->First();
01165 Train *dst_head;
01166 if (dst != NULL) {
01167 dst_head = dst->First();
01168 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01169
01170 dst = dst->GetLastEnginePart();
01171 } else {
01172 dst_head = NULL;
01173 }
01174
01175 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01176
01177
01178 if (move_chain && src_head == dst_head) return CommandCost();
01179
01180
01181 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01182
01183
01184 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01185
01186
01187 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01188
01189
01190
01191 TrainList original_src;
01192 TrainList original_dst;
01193
01194 MakeTrainBackup(original_src, src_head);
01195 MakeTrainBackup(original_dst, dst_head);
01196
01197
01198
01199
01200 Train *original_src_head = src_head;
01201 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01202
01203 if (flags & DC_EXEC) {
01204
01205 if (original_src_head != NULL && original_src_head->IsFrontEngine()) GroupStatistics::CountVehicle(original_src_head, -1);
01206 if (original_dst_head != NULL && original_dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(original_dst_head, -1);
01207 }
01208
01209
01210 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01211
01212 if ((flags & DC_AUTOREPLACE) == 0) {
01213
01214
01215
01216 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01217 if (ret.Failed()) {
01218
01219 RestoreTrainBackup(original_src);
01220 RestoreTrainBackup(original_dst);
01221 return ret;
01222 }
01223 }
01224
01225
01226 if (flags & DC_EXEC) {
01227
01228 NormaliseSubtypes(src_head);
01229 NormaliseSubtypes(dst_head);
01230
01231
01232
01233
01234
01235
01236
01237
01238
01239
01240
01241
01242
01243
01244
01245
01246
01247
01248
01249
01250
01251 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01252
01253 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01254 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01255 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01256 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01257 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01258
01259
01260
01261 DeleteVehicleOrders(src);
01262 RemoveVehicleFromGroup(src);
01263 src->unitnumber = 0;
01264 }
01265
01266
01267
01268 if (original_src_head != src && dst_head == src) {
01269 SetTrainGroupID(src, DEFAULT_GROUP);
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
01281 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01282 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01283 } else {
01284
01285 RestoreTrainBackup(original_src);
01286 RestoreTrainBackup(original_dst);
01287 }
01288
01289 return CommandCost();
01290 }
01291
01303 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01304 {
01305
01306 Window *w = NULL;
01307
01308
01309 bool sell_chain = HasBit(data, 0);
01310
01311 Train *v = Train::From(t)->GetFirstEnginePart();
01312 Train *first = v->First();
01313
01314 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01315
01316
01317
01318 TrainList original;
01319 MakeTrainBackup(original, first);
01320
01321
01322 Train *new_head = first;
01323 Train *sell_head = NULL;
01324
01325
01326 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01327
01328
01329 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01330 if (ret.Failed()) {
01331
01332 RestoreTrainBackup(original);
01333 return ret;
01334 }
01335
01336 CommandCost cost(EXPENSES_NEW_VEHICLES);
01337 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01338
01339 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01340 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01341 }
01342
01343
01344 if (flags & DC_EXEC) {
01345
01346 NormaliseSubtypes(new_head);
01347
01348 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01349
01350
01351 new_head->orders.list = first->orders.list;
01352 new_head->AddToShared(first);
01353 DeleteVehicleOrders(first);
01354
01355
01356 new_head->CopyVehicleConfigAndStatistics(first);
01357 GroupStatistics::CountVehicle(new_head, 1);
01358
01359
01360 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01361 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01362 OrderBackup::Backup(v, user);
01363 }
01364
01365
01366 NormaliseTrainHead(new_head);
01367
01368
01369 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01370 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01371
01372
01373 delete sell_head;
01374 } else {
01375
01376 RestoreTrainBackup(original);
01377 }
01378
01379 return cost;
01380 }
01381
01382 void Train::UpdateDeltaXY(Direction direction)
01383 {
01384
01385 this->x_offs = -1;
01386 this->y_offs = -1;
01387 this->x_extent = 3;
01388 this->y_extent = 3;
01389 this->z_extent = 6;
01390 this->x_bb_offs = 0;
01391 this->y_bb_offs = 0;
01392
01393 if (!IsDiagonalDirection(direction)) {
01394 static const int _sign_table[] =
01395 {
01396
01397 -1, -1,
01398 -1, 1,
01399 1, 1,
01400 1, -1,
01401 };
01402
01403 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01404
01405
01406 this->x_offs -= half_shorten * _sign_table[direction];
01407 this->y_offs -= half_shorten * _sign_table[direction + 1];
01408 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01409 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01410 } else {
01411 switch (direction) {
01412
01413
01414 case DIR_NE:
01415 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01416 this->x_extent = this->gcache.cached_veh_length - 1;
01417 this->x_bb_offs = -1;
01418 break;
01419
01420 case DIR_NW:
01421 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01422 this->y_extent = this->gcache.cached_veh_length - 1;
01423 this->y_bb_offs = -1;
01424 break;
01425
01426
01427
01428 case DIR_SW:
01429 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01430 this->x_extent = VEHICLE_LENGTH - 1;
01431 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01432 break;
01433
01434 case DIR_SE:
01435 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01436 this->y_extent = VEHICLE_LENGTH - 1;
01437 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01438 break;
01439
01440 default:
01441 NOT_REACHED();
01442 }
01443 }
01444 }
01445
01447 static void MarkTrainAsStuck(Train *v)
01448 {
01449 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01450
01451 SetBit(v->flags, VRF_TRAIN_STUCK);
01452
01453 v->wait_counter = 0;
01454
01455
01456 v->cur_speed = 0;
01457 v->subspeed = 0;
01458 v->SetLastSpeed();
01459
01460 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01461 }
01462 }
01463
01464 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01465 {
01466 uint16 flag1 = *swap_flag1;
01467 uint16 flag2 = *swap_flag2;
01468
01469
01470 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01471 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01472 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01473 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01474
01475
01476 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01477 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01478 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01479 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01480 }
01481 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01482 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01483 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01484 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01485 }
01486 }
01487
01492 static void UpdateStatusAfterSwap(Train *v)
01493 {
01494
01495 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01496
01497
01498 if (v->track != TRACK_BIT_WORMHOLE) {
01499 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01500 } else {
01501
01502
01503
01504
01505 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01506 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01507 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01508 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01509
01510
01511
01512 v->UpdateInclination(true, true);
01513 return;
01514 }
01515 }
01516 }
01517
01518 v->UpdateViewport(true, true);
01519 }
01520
01521 void ReverseTrainSwapVeh(Train *v, int l, int r)
01522 {
01523 Train *a, *b;
01524
01525
01526 for (a = v; l != 0; l--) a = a->Next();
01527 for (b = v; r != 0; r--) b = b->Next();
01528
01529 if (a != b) {
01530
01531 {
01532 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01533 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01534 a->vehstatus = tmp;
01535 }
01536
01537 Swap(a->track, b->track);
01538 Swap(a->direction, b->direction);
01539 Swap(a->x_pos, b->x_pos);
01540 Swap(a->y_pos, b->y_pos);
01541 Swap(a->tile, b->tile);
01542 Swap(a->z_pos, b->z_pos);
01543
01544 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01545
01546 UpdateStatusAfterSwap(a);
01547 UpdateStatusAfterSwap(b);
01548 } else {
01549
01550
01551
01552 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01553 UpdateStatusAfterSwap(a);
01554 }
01555
01556
01557 v->RailtypeChanged();
01558 }
01559
01560
01566 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01567 {
01568 return (v->type == VEH_TRAIN) ? v : NULL;
01569 }
01570
01571
01578 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01579 {
01580 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01581
01582 Train *t = Train::From(v);
01583 if (!t->IsFrontEngine()) return NULL;
01584
01585 TileIndex tile = *(TileIndex *)data;
01586
01587 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01588
01589 return t;
01590 }
01591
01592
01599 static bool TrainApproachingCrossing(TileIndex tile)
01600 {
01601 assert(IsLevelCrossingTile(tile));
01602
01603 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01604 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01605
01606 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01607
01608 dir = ReverseDiagDir(dir);
01609 tile_from = tile + TileOffsByDiagDir(dir);
01610
01611 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01612 }
01613
01614
01621 void UpdateLevelCrossing(TileIndex tile, bool sound)
01622 {
01623 assert(IsLevelCrossingTile(tile));
01624
01625
01626 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01627
01628 if (new_state != IsCrossingBarred(tile)) {
01629 if (new_state && sound) {
01630 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01631 }
01632 SetCrossingBarred(tile, new_state);
01633 MarkTileDirtyByTile(tile);
01634 }
01635 }
01636
01637
01643 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01644 {
01645 if (!IsCrossingBarred(tile)) {
01646 BarCrossing(tile);
01647 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01648 MarkTileDirtyByTile(tile);
01649 }
01650 }
01651
01652
01658 static void AdvanceWagonsBeforeSwap(Train *v)
01659 {
01660 Train *base = v;
01661 Train *first = base;
01662 Train *last = v->Last();
01663 uint length = CountVehiclesInChain(v);
01664
01665 while (length > 2) {
01666 last = last->Previous();
01667 first = first->Next();
01668
01669 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01670
01671
01672
01673 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01674
01675 base = first;
01676 length -= 2;
01677 }
01678 }
01679
01680
01686 static void AdvanceWagonsAfterSwap(Train *v)
01687 {
01688
01689 Train *dep = v;
01690 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01691 dep = dep->Next();
01692 }
01693
01694 Train *leave = dep->Next();
01695
01696 if (leave != NULL) {
01697
01698 int d = TicksToLeaveDepot(dep);
01699
01700 if (d <= 0) {
01701 leave->vehstatus &= ~VS_HIDDEN;
01702 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01703 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01704 }
01705 } else {
01706 dep = NULL;
01707 }
01708
01709 Train *base = v;
01710 Train *first = base;
01711 Train *last = v->Last();
01712 uint length = CountVehiclesInChain(v);
01713
01714
01715
01716 bool nomove = (dep == NULL);
01717
01718 while (length > 2) {
01719
01720
01721 if (base == dep) break;
01722
01723
01724 if (last == dep) nomove = true;
01725
01726 last = last->Previous();
01727 first = first->Next();
01728
01729 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01730
01731
01732 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01733
01734 base = first;
01735 length -= 2;
01736 }
01737 }
01738
01739
01740 void ReverseTrainDirection(Train *v)
01741 {
01742 if (IsRailDepotTile(v->tile)) {
01743 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01744 }
01745
01746
01747 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01748
01749
01750 TileIndex crossing = TrainApproachingCrossingTile(v);
01751
01752
01753 int r = CountVehiclesInChain(v) - 1;
01754
01755 AdvanceWagonsBeforeSwap(v);
01756
01757
01758 int l = 0;
01759 do {
01760 ReverseTrainSwapVeh(v, l++, r--);
01761 } while (l <= r);
01762
01763 AdvanceWagonsAfterSwap(v);
01764
01765 if (IsRailDepotTile(v->tile)) {
01766 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01767 }
01768
01769 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01770
01771 ClrBit(v->flags, VRF_REVERSING);
01772
01773
01774 v->ConsistChanged(true);
01775
01776
01777 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01778
01779
01780 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01781
01782
01783 crossing = TrainApproachingCrossingTile(v);
01784 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01785
01786
01787 if (v->track == TRACK_BIT_DEPOT) {
01788
01789 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01790 ClrBit(v->flags, VRF_TRAIN_STUCK);
01791 return;
01792 }
01793
01794
01795
01796 DiagDirection dir = TrainExitDir(v->direction, v->track);
01797 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01798
01799 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01800
01801
01802 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01803 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01804 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01805
01806 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01807 if (TryPathReserve(v, false, first_tile_okay)) {
01808
01809 CheckNextTrainTile(v);
01810 } else if (v->current_order.GetType() != OT_LOADING) {
01811
01812 MarkTrainAsStuck(v);
01813 }
01814 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01815
01816 ClrBit(v->flags, VRF_TRAIN_STUCK);
01817 v->wait_counter = 0;
01818 }
01819 }
01820
01830 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01831 {
01832 Train *v = Train::GetIfValid(p1);
01833 if (v == NULL) return CMD_ERROR;
01834
01835 CommandCost ret = CheckOwnership(v->owner);
01836 if (ret.Failed()) return ret;
01837
01838 if (p2 != 0) {
01839
01840
01841 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01842 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01843 }
01844 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01845
01846 Train *front = v->First();
01847
01848 if (!front->IsStoppedInDepot()) {
01849 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01850 }
01851
01852 if (flags & DC_EXEC) {
01853 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01854
01855 front->ConsistChanged(false);
01856 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01857 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01858 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01859 SetWindowClassesDirty(WC_TRAINS_LIST);
01860 }
01861 } else {
01862
01863 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01864
01865 if (flags & DC_EXEC) {
01866
01867 if (v->current_order.IsType(OT_LOADING)) {
01868 const Vehicle *last = v;
01869 while (last->Next() != NULL) last = last->Next();
01870
01871
01872 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01873 v->LeaveStation();
01874 }
01875 }
01876
01877
01878 v->force_proceed = TFP_NONE;
01879 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01880
01881 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01882 ToggleBit(v->flags, VRF_REVERSING);
01883 } else {
01884 v->cur_speed = 0;
01885 v->SetLastSpeed();
01886 HideFillingPercent(&v->fill_percent_te_id);
01887 ReverseTrainDirection(v);
01888 }
01889 }
01890 }
01891 return CommandCost();
01892 }
01893
01903 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01904 {
01905 Train *t = Train::GetIfValid(p1);
01906 if (t == NULL) return CMD_ERROR;
01907
01908 CommandCost ret = CheckOwnership(t->owner);
01909 if (ret.Failed()) return ret;
01910
01911
01912 if (flags & DC_EXEC) {
01913
01914
01915
01916
01917
01918 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? TFP_STUCK : TFP_SIGNAL;
01919 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01920 }
01921
01922 return CommandCost();
01923 }
01924
01929 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01930 {
01931 assert(!(v->vehstatus & VS_CRASHED));
01932
01933 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01934
01935 PBSTileInfo origin = FollowTrainReservation(v);
01936 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01937
01938 switch (_settings_game.pf.pathfinder_for_trains) {
01939 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01940 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01941
01942 default: NOT_REACHED();
01943 }
01944 }
01945
01946 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
01947 {
01948 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
01949 if (tfdd.best_length == UINT_MAX) return false;
01950
01951 if (location != NULL) *location = tfdd.tile;
01952 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
01953 if (reverse != NULL) *reverse = tfdd.reverse;
01954
01955 return true;
01956 }
01957
01958 void Train::PlayLeaveStationSound() const
01959 {
01960 static const SoundFx sfx[] = {
01961 SND_04_TRAIN,
01962 SND_0A_TRAIN_HORN,
01963 SND_0A_TRAIN_HORN,
01964 SND_47_MAGLEV_2,
01965 SND_41_MAGLEV
01966 };
01967
01968 if (PlayVehicleSound(this, VSE_START)) return;
01969
01970 EngineID engtype = this->engine_type;
01971 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
01972 }
01973
01975 static void CheckNextTrainTile(Train *v)
01976 {
01977
01978 if (_settings_game.pf.path_backoff_interval == 255) return;
01979
01980
01981 if (v->track == TRACK_BIT_DEPOT) return;
01982
01983 switch (v->current_order.GetType()) {
01984
01985 case OT_GOTO_DEPOT:
01986 if (v->tile == v->dest_tile) return;
01987 break;
01988
01989 case OT_GOTO_WAYPOINT:
01990
01991 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
01992 break;
01993
01994 case OT_NOTHING:
01995 case OT_LEAVESTATION:
01996 case OT_LOADING:
01997
01998 if (v->GetNumOrders() > 0) return;
01999 break;
02000
02001 default:
02002 break;
02003 }
02004
02005 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02006
02007 Trackdir td = v->GetVehicleTrackdir();
02008
02009
02010 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02011 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02012 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02013
02014 CFollowTrackRail ft(v);
02015 if (!ft.Follow(v->tile, td)) return;
02016
02017 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02018
02019 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02020 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02021
02022 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02023 if (_settings_game.pf.forbid_90_deg) {
02024 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02025 }
02026 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02027 }
02028 }
02029 }
02030 }
02031
02032 static bool CheckTrainStayInDepot(Train *v)
02033 {
02034
02035 for (const Train *u = v; u != NULL; u = u->Next()) {
02036 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02037 }
02038
02039
02040 if (v->gcache.cached_power == 0) {
02041 v->vehstatus |= VS_STOPPED;
02042 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02043 return true;
02044 }
02045
02046 SigSegState seg_state;
02047
02048 if (v->force_proceed == TFP_NONE) {
02049
02050 if (++v->wait_counter < 37) {
02051 SetWindowClassesDirty(WC_TRAINS_LIST);
02052 return true;
02053 }
02054
02055 v->wait_counter = 0;
02056
02057 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02058 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02059
02060 SetWindowClassesDirty(WC_TRAINS_LIST);
02061 return true;
02062 }
02063 } else {
02064 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02065 }
02066
02067
02068 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02069
02070 if (HasDepotReservation(v->tile)) return true;
02071 SetDepotReservation(v->tile, true);
02072 VehicleEnterDepot(v);
02073 return true;
02074 }
02075
02076
02077 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02078
02079 SetWindowClassesDirty(WC_TRAINS_LIST);
02080 MarkTrainAsStuck(v);
02081 return true;
02082 }
02083
02084 SetDepotReservation(v->tile, true);
02085 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02086
02087 VehicleServiceInDepot(v);
02088 SetWindowClassesDirty(WC_TRAINS_LIST);
02089 v->PlayLeaveStationSound();
02090
02091 v->track = TRACK_BIT_X;
02092 if (v->direction & 2) v->track = TRACK_BIT_Y;
02093
02094 v->vehstatus &= ~VS_HIDDEN;
02095 v->cur_speed = 0;
02096
02097 v->UpdateDeltaXY(v->direction);
02098 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
02099 VehicleMove(v, false);
02100 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02101 v->UpdateAcceleration();
02102 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02103
02104 return false;
02105 }
02106
02108 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02109 {
02110 DiagDirection dir = TrackdirToExitdir(track_dir);
02111
02112 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02113
02114 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02115 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02116
02117 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02118
02119 SetTunnelBridgeReservation(tile, false);
02120 SetTunnelBridgeReservation(end, false);
02121
02122 if (_settings_client.gui.show_track_reservation) {
02123 MarkTileDirtyByTile(tile);
02124 MarkTileDirtyByTile(end);
02125 }
02126 }
02127 }
02128 } else if (IsRailStationTile(tile)) {
02129 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02130
02131
02132 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02133 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02134 }
02135 } else {
02136
02137 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02138 }
02139 }
02140
02142 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02143 {
02144 assert(v->IsFrontEngine());
02145
02146 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02147 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02148 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02149 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02150
02151
02152 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02153
02154 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02155 while (ft.Follow(tile, td)) {
02156 tile = ft.m_new_tile;
02157 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02158 td = RemoveFirstTrackdir(&bits);
02159 assert(bits == TRACKDIR_BIT_NONE);
02160
02161 if (!IsValidTrackdir(td)) break;
02162
02163 if (IsTileType(tile, MP_RAILWAY)) {
02164 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02165
02166 UnreserveRailTrack(tile, TrackdirToTrack(td));
02167 break;
02168 }
02169 if (HasPbsSignalOnTrackdir(tile, td)) {
02170 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02171
02172 break;
02173 } else {
02174
02175 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02176 MarkTileDirtyByTile(tile);
02177 }
02178 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02179 break;
02180 }
02181 }
02182
02183
02184 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);
02185
02186 free_tile = true;
02187 }
02188 }
02189
02190 static const byte _initial_tile_subcoord[6][4][3] = {
02191 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02192 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02193 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02194 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02195 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02196 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02197 };
02198
02211 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02212 {
02213 switch (_settings_game.pf.pathfinder_for_trains) {
02214 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02215 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02216
02217 default: NOT_REACHED();
02218 }
02219 }
02220
02226 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02227 {
02228 PBSTileInfo origin = FollowTrainReservation(v);
02229
02230 CFollowTrackRail ft(v);
02231
02232 TileIndex tile = origin.tile;
02233 Trackdir cur_td = origin.trackdir;
02234 while (ft.Follow(tile, cur_td)) {
02235 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02236
02237 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02238 }
02239
02240 if (_settings_game.pf.forbid_90_deg) {
02241 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02242 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02243 }
02244
02245
02246 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02247 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02248
02249
02250
02251
02252
02253
02254 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02255
02256
02257
02258 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02259
02260
02261 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02262 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02263 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02264 }
02265
02266 tile = ft.m_new_tile;
02267 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02268
02269 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02270 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02271 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02272
02273 return PBSTileInfo(tile, cur_td, true);
02274 }
02275
02276 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02277 }
02278
02279 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02280
02281 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02282 }
02283
02284
02285 tile = origin.tile;
02286 cur_td = origin.trackdir;
02287 TileIndex stopped = ft.m_old_tile;
02288 Trackdir stopped_td = ft.m_old_td;
02289 while (tile != stopped || cur_td != stopped_td) {
02290 if (!ft.Follow(tile, cur_td)) break;
02291
02292 if (_settings_game.pf.forbid_90_deg) {
02293 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02294 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02295 }
02296 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02297
02298 tile = ft.m_new_tile;
02299 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02300
02301 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02302 }
02303
02304
02305 return PBSTileInfo();
02306 }
02307
02318 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02319 {
02320 switch (_settings_game.pf.pathfinder_for_trains) {
02321 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02322 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02323
02324 default: NOT_REACHED();
02325 }
02326 }
02327
02329 class VehicleOrderSaver
02330 {
02331 private:
02332 Train *v;
02333 Order old_order;
02334 TileIndex old_dest_tile;
02335 StationID old_last_station_visited;
02336 VehicleOrderID index;
02337 bool suppress_implicit_orders;
02338
02339 public:
02340 VehicleOrderSaver(Train *_v) :
02341 v(_v),
02342 old_order(_v->current_order),
02343 old_dest_tile(_v->dest_tile),
02344 old_last_station_visited(_v->last_station_visited),
02345 index(_v->cur_real_order_index),
02346 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02347 {
02348 }
02349
02350 ~VehicleOrderSaver()
02351 {
02352 this->v->current_order = this->old_order;
02353 this->v->dest_tile = this->old_dest_tile;
02354 this->v->last_station_visited = this->old_last_station_visited;
02355 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02356 }
02357
02363 bool SwitchToNextOrder(bool skip_first)
02364 {
02365 if (this->v->GetNumOrders() == 0) return false;
02366
02367 if (skip_first) ++this->index;
02368
02369 int conditional_depth = 0;
02370
02371 do {
02372
02373 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02374
02375 Order *order = this->v->GetOrder(this->index);
02376 assert(order != NULL);
02377
02378 switch (order->GetType()) {
02379 case OT_GOTO_DEPOT:
02380
02381 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02382 case OT_GOTO_STATION:
02383 case OT_GOTO_WAYPOINT:
02384 this->v->current_order = *order;
02385 return UpdateOrderDest(this->v, order, 0, true);
02386 case OT_CONDITIONAL: {
02387 if (conditional_depth > this->v->GetNumOrders()) return false;
02388 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02389 if (next != INVALID_VEH_ORDER_ID) {
02390 conditional_depth++;
02391 this->index = next;
02392
02393 continue;
02394 }
02395 break;
02396 }
02397 default:
02398 break;
02399 }
02400
02401
02402 ++this->index;
02403 } while (this->index != this->v->cur_real_order_index);
02404
02405 return false;
02406 }
02407 };
02408
02409
02410 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02411 {
02412 Track best_track = INVALID_TRACK;
02413 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02414 bool changed_signal = false;
02415
02416 assert((tracks & ~TRACK_BIT_MASK) == 0);
02417
02418 if (got_reservation != NULL) *got_reservation = false;
02419
02420
02421 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02422
02423 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02424
02425
02426 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02427 Track track = FindFirstTrack(tracks);
02428
02429 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02430 do_track_reservation = true;
02431 changed_signal = true;
02432 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02433 } else if (!do_track_reservation) {
02434 return track;
02435 }
02436 best_track = track;
02437 }
02438
02439 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02440 DiagDirection dest_enterdir = enterdir;
02441 if (do_track_reservation) {
02442
02443
02444
02445 CheckIfTrainNeedsService(v);
02446 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02447
02448 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02449 if (res_dest.tile == INVALID_TILE) {
02450
02451 if (mark_stuck) MarkTrainAsStuck(v);
02452 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02453 return FindFirstTrack(tracks);
02454 }
02455 }
02456
02457
02458 VehicleOrderSaver orders(v);
02459
02460
02461
02462
02463
02464
02465
02466 if (v->current_order.IsType(OT_LEAVESTATION)) {
02467 orders.SwitchToNextOrder(false);
02468 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02469 v->current_order.IsType(OT_GOTO_STATION) ?
02470 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02471 v->tile == v->dest_tile))) {
02472 orders.SwitchToNextOrder(true);
02473 }
02474
02475 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02476
02477 bool path_found = true;
02478 TileIndex new_tile = res_dest.tile;
02479
02480 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02481 if (new_tile == tile) best_track = next_track;
02482 v->HandlePathfindingResult(path_found);
02483 }
02484
02485
02486 if (!do_track_reservation) return best_track;
02487
02488
02489 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02490 if (mark_stuck) MarkTrainAsStuck(v);
02491 FreeTrainTrackReservation(v);
02492 return best_track;
02493 }
02494
02495
02496 if (res_dest.tile == INVALID_TILE) {
02497
02498 PBSTileInfo origin = FollowTrainReservation(v);
02499 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02500 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02501 best_track = FindFirstTrack(res);
02502 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02503 if (got_reservation != NULL) *got_reservation = true;
02504 if (changed_signal) MarkTileDirtyByTile(tile);
02505 } else {
02506 FreeTrainTrackReservation(v);
02507 if (mark_stuck) MarkTrainAsStuck(v);
02508 }
02509 return best_track;
02510 }
02511
02512 if (got_reservation != NULL) *got_reservation = true;
02513
02514
02515 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02516
02517 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02518 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02519 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02520 if (_settings_game.pf.forbid_90_deg) {
02521 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02522 }
02523
02524
02525 if (orders.SwitchToNextOrder(true)) {
02526 PBSTileInfo cur_dest;
02527 bool path_found;
02528 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02529 if (cur_dest.tile != INVALID_TILE) {
02530 res_dest = cur_dest;
02531 if (res_dest.okay) continue;
02532
02533 FreeTrainTrackReservation(v);
02534 if (mark_stuck) MarkTrainAsStuck(v);
02535 if (got_reservation != NULL) *got_reservation = false;
02536 changed_signal = false;
02537 break;
02538 }
02539 }
02540
02541 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02542 FreeTrainTrackReservation(v);
02543 if (mark_stuck) MarkTrainAsStuck(v);
02544 if (got_reservation != NULL) *got_reservation = false;
02545 changed_signal = false;
02546 }
02547 break;
02548 }
02549
02550 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02551
02552 if (changed_signal) MarkTileDirtyByTile(tile);
02553
02554 return best_track;
02555 }
02556
02565 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02566 {
02567 assert(v->IsFrontEngine());
02568
02569
02570
02571
02572 if (v->track == TRACK_BIT_DEPOT) {
02573 if (HasDepotReservation(v->tile)) {
02574 if (mark_as_stuck) MarkTrainAsStuck(v);
02575 return false;
02576 } else {
02577
02578 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02579 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02580 }
02581 }
02582
02583 Vehicle *other_train = NULL;
02584 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02585
02586
02587
02588
02589
02590 if (other_train != NULL && other_train->index != v->index) {
02591 if (mark_as_stuck) MarkTrainAsStuck(v);
02592 return false;
02593 }
02594
02595 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02596
02597 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02598 ClrBit(v->flags, VRF_TRAIN_STUCK);
02599 return true;
02600 }
02601
02602
02603 if (v->track == TRACK_BIT_DEPOT) {
02604 SetDepotReservation(v->tile, true);
02605 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02606 }
02607
02608 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02609 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02610 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02611
02612 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02613
02614 bool res_made = false;
02615 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02616
02617 if (!res_made) {
02618
02619 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02620 return false;
02621 }
02622
02623 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02624 v->wait_counter = 0;
02625 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02626 }
02627 ClrBit(v->flags, VRF_TRAIN_STUCK);
02628 return true;
02629 }
02630
02631
02632 static bool CheckReverseTrain(const Train *v)
02633 {
02634 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02635 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02636 !(v->direction & 1)) {
02637 return false;
02638 }
02639
02640 assert(v->track != TRACK_BIT_NONE);
02641
02642 switch (_settings_game.pf.pathfinder_for_trains) {
02643 case VPF_NPF: return NPFTrainCheckReverse(v);
02644 case VPF_YAPF: return YapfTrainCheckReverse(v);
02645
02646 default: NOT_REACHED();
02647 }
02648 }
02649
02650 TileIndex Train::GetOrderStationLocation(StationID station)
02651 {
02652 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02653
02654 const Station *st = Station::Get(station);
02655 if (!(st->facilities & FACIL_TRAIN)) {
02656
02657 this->IncrementRealOrderIndex();
02658 return 0;
02659 }
02660
02661 return st->xy;
02662 }
02663
02664 void Train::MarkDirty()
02665 {
02666 Train *v = this;
02667 do {
02668 v->UpdateViewport(false, false);
02669 } while ((v = v->Next()) != NULL);
02670
02671
02672 this->CargoChanged();
02673 this->UpdateAcceleration();
02674 }
02675
02683 int Train::UpdateSpeed()
02684 {
02685 switch (_settings_game.vehicle.train_acceleration_model) {
02686 default: NOT_REACHED();
02687 case AM_ORIGINAL:
02688 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->gcache.cached_max_track_speed);
02689
02690 case AM_REALISTIC:
02691 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02692 }
02693 }
02694
02700 static void TrainEnterStation(Train *v, StationID station)
02701 {
02702 v->last_station_visited = station;
02703
02704
02705 Station *st = Station::Get(station);
02706 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02707 st->had_vehicle_of_type |= HVOT_TRAIN;
02708 SetDParam(0, st->index);
02709 AddVehicleNewsItem(
02710 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02711 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
02712 v->index,
02713 st->index
02714 );
02715 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02716 }
02717
02718 v->force_proceed = TFP_NONE;
02719 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02720
02721 v->BeginLoading();
02722
02723 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02724 }
02725
02726
02727 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02728 {
02729 return IsTileOwner(tile, v->owner) &&
02730 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02731 }
02732
02733 struct RailtypeSlowdownParams {
02734 byte small_turn, large_turn;
02735 byte z_up;
02736 byte z_down;
02737 };
02738
02739 static const RailtypeSlowdownParams _railtype_slowdown[] = {
02740
02741 {256 / 4, 256 / 2, 256 / 4, 2},
02742 {256 / 4, 256 / 2, 256 / 4, 2},
02743 {256 / 4, 256 / 2, 256 / 4, 2},
02744 {0, 256 / 2, 256 / 4, 2},
02745 };
02746
02748 static inline void AffectSpeedByZChange(Train *v, int old_z)
02749 {
02750 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02751
02752 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
02753
02754 if (old_z < v->z_pos) {
02755 v->cur_speed -= (v->cur_speed * rsp->z_up >> 8);
02756 } else {
02757 uint16 spd = v->cur_speed + rsp->z_down;
02758 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02759 }
02760 }
02761
02762 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02763 {
02764 if (IsTileType(tile, MP_RAILWAY) &&
02765 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02766 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02767 Trackdir trackdir = FindFirstTrackdir(tracks);
02768 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02769
02770 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02771 }
02772 }
02773 return false;
02774 }
02775
02779 void Train::ReserveTrackUnderConsist() const
02780 {
02781 for (const Train *u = this; u != NULL; u = u->Next()) {
02782 switch (u->track) {
02783 case TRACK_BIT_WORMHOLE:
02784 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02785 break;
02786 case TRACK_BIT_DEPOT:
02787 break;
02788 default:
02789 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02790 break;
02791 }
02792 }
02793 }
02794
02795 uint Train::Crash(bool flooded)
02796 {
02797 uint pass = 0;
02798 if (this->IsFrontEngine()) {
02799 pass += 2;
02800
02801
02802
02803 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02804 for (const Train *v = this; v != NULL; v = v->Next()) {
02805 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02806 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02807
02808
02809 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02810 }
02811 }
02812
02813
02814
02815 TileIndex crossing = TrainApproachingCrossingTile(this);
02816 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02817
02818
02819 HideFillingPercent(&this->fill_percent_te_id);
02820 }
02821
02822 pass += this->GroundVehicleBase::Crash(flooded);
02823
02824 this->crash_anim_pos = flooded ? 4000 : 1;
02825 return pass;
02826 }
02827
02834 static uint TrainCrashed(Train *v)
02835 {
02836 uint num = 0;
02837
02838
02839 if (!(v->vehstatus & VS_CRASHED)) {
02840 num = v->Crash();
02841 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02842 }
02843
02844
02845
02846 v->ReserveTrackUnderConsist();
02847
02848 return num;
02849 }
02850
02851 struct TrainCollideChecker {
02852 Train *v;
02853 uint num;
02854 };
02855
02856 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02857 {
02858 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02859
02860
02861 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02862
02863
02864 if (v->owner != tcc->v->owner) return NULL;
02865
02866
02867 Train *coll = Train::From(v)->First();
02868
02869
02870 if (coll == tcc->v) return NULL;
02871
02872 int x_diff = v->x_pos - tcc->v->x_pos;
02873 int y_diff = v->y_pos - tcc->v->y_pos;
02874
02875
02876
02877
02878
02879 uint hash = (y_diff + 7) | (x_diff + 7);
02880 if (hash & ~15) return NULL;
02881
02882
02883 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02884 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
02885
02886
02887 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
02888
02889
02890 tcc->num += TrainCrashed(tcc->v);
02891 tcc->num += TrainCrashed(coll);
02892
02893 return NULL;
02894 }
02895
02902 static bool CheckTrainCollision(Train *v)
02903 {
02904
02905 if (v->track == TRACK_BIT_DEPOT) return false;
02906
02907 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
02908
02909 TrainCollideChecker tcc;
02910 tcc.v = v;
02911 tcc.num = 0;
02912
02913
02914 if (v->track == TRACK_BIT_WORMHOLE) {
02915 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
02916 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
02917 } else {
02918 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
02919 }
02920
02921
02922 if (tcc.num == 0) return false;
02923
02924 SetDParam(0, tcc.num);
02925 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
02926 NS_ACCIDENT,
02927 v->index
02928 );
02929
02930 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
02931 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
02932 return true;
02933 }
02934
02935 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
02936 {
02937 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
02938
02939 Train *t = Train::From(v);
02940 DiagDirection exitdir = *(DiagDirection *)data;
02941
02942
02943 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
02944
02945 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
02946
02947 return t;
02948 }
02949
02957 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
02958 {
02959 Train *first = v->First();
02960 Train *prev;
02961 bool direction_changed = false;
02962
02963
02964 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
02965 DiagDirection enterdir = DIAGDIR_BEGIN;
02966 bool update_signals_crossing = false;
02967
02968 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
02969 if (v->track != TRACK_BIT_WORMHOLE) {
02970
02971 if (gp.old_tile == gp.new_tile) {
02972
02973 if (v->track == TRACK_BIT_DEPOT) {
02974
02975 gp.x = v->x_pos;
02976 gp.y = v->y_pos;
02977 } else {
02978
02979
02980
02981 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
02982
02983 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
02984 if (HasBit(r, VETS_CANNOT_ENTER)) {
02985 goto invalid_rail;
02986 }
02987 if (HasBit(r, VETS_ENTERED_STATION)) {
02988
02989 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
02990 }
02991 }
02992 } else {
02993
02994
02995
02996 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
02997 assert(IsValidDiagDirection(enterdir));
02998
02999
03000
03001 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03002 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03003
03004 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03005 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03006
03007 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03008 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03009
03010
03011 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03012 }
03013
03014 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03015
03016
03017
03018 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03019
03020 TrackBits chosen_track;
03021 if (prev == NULL) {
03022
03023
03024 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03025 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03026
03027 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03028
03029
03030
03031
03032 Trackdir dir = FindFirstTrackdir(trackdirbits);
03033 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03034 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03035
03036
03037 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03038 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03039 }
03040 }
03041
03042
03043 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03044
03045 Trackdir i = FindFirstTrackdir(trackdirbits);
03046
03047
03048 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03049
03050 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03051 v->cur_speed = 0;
03052 v->subspeed = 0;
03053 v->progress = 255 - 100;
03054 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03055 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03056 v->cur_speed = 0;
03057 v->subspeed = 0;
03058 v->progress = 255 - 10;
03059 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03060 DiagDirection exitdir = TrackdirToExitdir(i);
03061 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03062
03063 exitdir = ReverseDiagDir(exitdir);
03064
03065
03066 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03067 }
03068 }
03069
03070
03071
03072
03073
03074 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03075 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03076 v->wait_counter = 0;
03077 return false;
03078 }
03079 goto reverse_train_direction;
03080 } else {
03081 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03082 }
03083 } else {
03084
03085 if (prev->tile == gp.new_tile) {
03086
03087 if (prev->track == TRACK_BIT_WORMHOLE) {
03088
03089
03090 assert(IsTunnel(prev->tile));
03091 chosen_track = bits;
03092 } else {
03093 chosen_track = prev->track;
03094 }
03095 } else {
03096
03097
03098
03099
03100
03101
03102
03103 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03104 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03105 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03106 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03107 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03108 };
03109 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03110 assert(IsValidDiagDirection(exitdir));
03111 chosen_track = _connecting_track[enterdir][exitdir];
03112 }
03113 chosen_track &= bits;
03114 }
03115
03116
03117 assert(
03118 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03119 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03120 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03121
03122
03123 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03124 gp.x = (gp.x & ~0xF) | b[0];
03125 gp.y = (gp.y & ~0xF) | b[1];
03126 Direction chosen_dir = (Direction)b[2];
03127
03128
03129 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03130 if (HasBit(r, VETS_CANNOT_ENTER)) {
03131 goto invalid_rail;
03132 }
03133
03134 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03135 Track track = FindFirstTrack(chosen_track);
03136 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03137 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03138 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03139 MarkTileDirtyByTile(gp.new_tile);
03140 }
03141
03142
03143 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03144
03145 v->tile = gp.new_tile;
03146
03147 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03148 v->First()->RailtypeChanged();
03149 }
03150
03151 v->track = chosen_track;
03152 assert(v->track);
03153 }
03154
03155
03156
03157 update_signals_crossing = true;
03158
03159 if (chosen_dir != v->direction) {
03160 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03161 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03162 DirDiff diff = DirDifference(v->direction, chosen_dir);
03163 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? rsp->small_turn : rsp->large_turn) * v->cur_speed >> 8;
03164 }
03165 direction_changed = true;
03166 v->direction = chosen_dir;
03167 }
03168
03169 if (v->IsFrontEngine()) {
03170 v->wait_counter = 0;
03171
03172
03173 TileIndex crossing = TrainApproachingCrossingTile(v);
03174 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03175
03176
03177 CheckNextTrainTile(v);
03178 }
03179
03180 if (HasBit(r, VETS_ENTERED_STATION)) {
03181
03182 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03183 }
03184 }
03185 } else {
03186
03187
03188
03189 if (!(v->vehstatus & VS_HIDDEN)) {
03190 Train *first = v->First();
03191 first->cur_speed = min(first->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03192 }
03193
03194 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03195
03196 if (v->IsFrontEngine()) {
03197 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03198 CheckNextTrainTile(v);
03199 }
03200
03201
03202 if (gp.old_tile == gp.new_tile) {
03203 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03204 }
03205 } else {
03206 v->x_pos = gp.x;
03207 v->y_pos = gp.y;
03208 VehicleMove(v, !(v->vehstatus & VS_HIDDEN));
03209 continue;
03210 }
03211 }
03212
03213
03214 v->UpdateDeltaXY(v->direction);
03215
03216 v->x_pos = gp.x;
03217 v->y_pos = gp.y;
03218
03219
03220 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03221
03222 if (prev == NULL) {
03223
03224 AffectSpeedByZChange(v, old_z);
03225 }
03226
03227 if (update_signals_crossing) {
03228 if (v->IsFrontEngine()) {
03229 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03230
03231
03232
03233
03234
03235
03236
03237
03238 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03239 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03240 !TryPathReserve(v)) {
03241 MarkTrainAsStuck(v);
03242 }
03243 }
03244 }
03245
03246
03247
03248 if (v->Next() == NULL) {
03249 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03250 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03251 }
03252 }
03253
03254
03255 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03256 }
03257
03258 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03259
03260 return true;
03261
03262 invalid_rail:
03263
03264 if (prev != NULL) error("Disconnecting train");
03265
03266 reverse_train_direction:
03267 if (reverse) {
03268 v->wait_counter = 0;
03269 v->cur_speed = 0;
03270 v->subspeed = 0;
03271 ReverseTrainDirection(v);
03272 }
03273
03274 return false;
03275 }
03276
03283 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03284 {
03285 TrackBits *trackbits = (TrackBits *)data;
03286
03287 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03288 TrackBits train_tbits = Train::From(v)->track;
03289 if (train_tbits == TRACK_BIT_WORMHOLE) {
03290
03291 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03292 } else if (train_tbits != TRACK_BIT_DEPOT) {
03293 *trackbits |= train_tbits;
03294 }
03295 }
03296
03297 return NULL;
03298 }
03299
03307 static void DeleteLastWagon(Train *v)
03308 {
03309 Train *first = v->First();
03310
03311
03312
03313
03314 Train *u = v;
03315 for (; v->Next() != NULL; v = v->Next()) u = v;
03316 u->SetNext(NULL);
03317
03318 if (first != v) {
03319
03320 first->ConsistChanged(false);
03321
03322
03323 if (first->track == TRACK_BIT_DEPOT) {
03324 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03325 }
03326 }
03327
03328
03329 TrackBits trackbits = v->track;
03330 TileIndex tile = v->tile;
03331 Owner owner = v->owner;
03332
03333 delete v;
03334 v = NULL;
03335
03336 if (trackbits == TRACK_BIT_WORMHOLE) {
03337
03338 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03339 }
03340
03341 Track track = TrackBitsToTrack(trackbits);
03342 if (HasReservedTracks(tile, trackbits)) {
03343 UnreserveRailTrack(tile, track);
03344
03345
03346 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03347 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03348
03349
03350 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03351 Track t;
03352 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03353 }
03354
03355
03356 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03357
03358
03359 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03360 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03361 } else {
03362 SetSignalsOnBothDir(tile, track, owner);
03363 }
03364 }
03365
03370 static void ChangeTrainDirRandomly(Train *v)
03371 {
03372 static const DirDiff delta[] = {
03373 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03374 };
03375
03376 do {
03377
03378 if (!(v->vehstatus & VS_HIDDEN)) {
03379 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03380 v->UpdateDeltaXY(v->direction);
03381 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03382
03383
03384
03385 if (v->track != TRACK_BIT_WORMHOLE) v->UpdateInclination(false, false);
03386 }
03387 } while ((v = v->Next()) != NULL);
03388 }
03389
03395 static bool HandleCrashedTrain(Train *v)
03396 {
03397 int state = ++v->crash_anim_pos;
03398
03399 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03400 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03401 }
03402
03403 uint32 r;
03404 if (state <= 200 && Chance16R(1, 7, r)) {
03405 int index = (r * 10 >> 16);
03406
03407 Vehicle *u = v;
03408 do {
03409 if (--index < 0) {
03410 r = Random();
03411
03412 CreateEffectVehicleRel(u,
03413 GB(r, 8, 3) + 2,
03414 GB(r, 16, 3) + 2,
03415 GB(r, 0, 3) + 5,
03416 EV_EXPLOSION_SMALL);
03417 break;
03418 }
03419 } while ((u = u->Next()) != NULL);
03420 }
03421
03422 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03423
03424 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03425 bool ret = v->Next() != NULL;
03426 DeleteLastWagon(v);
03427 return ret;
03428 }
03429
03430 return true;
03431 }
03432
03434 static const uint16 _breakdown_speeds[16] = {
03435 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03436 };
03437
03438
03447 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03448 {
03449
03450 uint x = v->x_pos & 0xF;
03451 uint y = v->y_pos & 0xF;
03452
03453
03454
03455 switch (v->direction) {
03456 case DIR_N : x = ~x + ~y + 25; break;
03457 case DIR_NW: x = y;
03458 case DIR_NE: x = ~x + 16; break;
03459 case DIR_E : x = ~x + y + 9; break;
03460 case DIR_SE: x = y; break;
03461 case DIR_S : x = x + y - 7; break;
03462 case DIR_W : x = ~y + x + 9; break;
03463 default: break;
03464 }
03465
03466
03467
03468
03469
03470
03471 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03472
03473 v->cur_speed = 0;
03474 if (reverse) ReverseTrainDirection(v);
03475 return false;
03476 }
03477
03478
03479 v->vehstatus |= VS_TRAIN_SLOWING;
03480 uint16 break_speed = _breakdown_speeds[x & 0xF];
03481 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03482
03483 return true;
03484 }
03485
03486
03492 static bool TrainCanLeaveTile(const Train *v)
03493 {
03494
03495 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03496
03497 TileIndex tile = v->tile;
03498
03499
03500 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03501 DiagDirection dir = GetTunnelBridgeDirection(tile);
03502 if (DiagDirToDir(dir) == v->direction) return false;
03503 }
03504
03505
03506 if (IsRailDepotTile(tile)) {
03507 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03508 if (DiagDirToDir(dir) == v->direction) return false;
03509 }
03510
03511 return true;
03512 }
03513
03514
03522 static TileIndex TrainApproachingCrossingTile(const Train *v)
03523 {
03524 assert(v->IsFrontEngine());
03525 assert(!(v->vehstatus & VS_CRASHED));
03526
03527 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03528
03529 DiagDirection dir = TrainExitDir(v->direction, v->track);
03530 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03531
03532
03533 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03534 !CheckCompatibleRail(v, tile)) {
03535 return INVALID_TILE;
03536 }
03537
03538 return tile;
03539 }
03540
03541
03549 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03550 {
03551
03552
03553 int t = v->breakdown_ctr;
03554 if (t > 1) {
03555 v->vehstatus |= VS_TRAIN_SLOWING;
03556
03557 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03558 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03559 } else {
03560 v->vehstatus &= ~VS_TRAIN_SLOWING;
03561 }
03562
03563 if (!TrainCanLeaveTile(v)) return true;
03564
03565
03566 DiagDirection dir = TrainExitDir(v->direction, v->track);
03567
03568 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03569
03570
03571 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03572 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03573
03574 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03575 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03576
03577
03578
03579
03580 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03581 if (_settings_game.pf.forbid_90_deg) {
03582 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03583 }
03584
03585
03586 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03587 return TrainApproachingLineEnd(v, false, reverse);
03588 }
03589
03590
03591 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03592
03593
03594 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03595
03596 return true;
03597 }
03598
03599
03600 static bool TrainLocoHandler(Train *v, bool mode)
03601 {
03602
03603 if (v->vehstatus & VS_CRASHED) {
03604 return mode ? true : HandleCrashedTrain(v);
03605 }
03606
03607 if (v->force_proceed != TFP_NONE) {
03608 ClrBit(v->flags, VRF_TRAIN_STUCK);
03609 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03610 }
03611
03612
03613 if (v->HandleBreakdown()) return true;
03614
03615 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03616 ReverseTrainDirection(v);
03617 }
03618
03619
03620 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03621
03622 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03623 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03624 v->wait_counter = 0;
03625 v->cur_speed = 0;
03626 v->subspeed = 0;
03627 ClrBit(v->flags, VRF_LEAVING_STATION);
03628 ReverseTrainDirection(v);
03629 return true;
03630 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03631
03632
03633
03634 DiagDirection dir = TrainExitDir(v->direction, v->track);
03635 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03636
03637 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03638 TryPathReserve(v, true, true);
03639 }
03640 ClrBit(v->flags, VRF_LEAVING_STATION);
03641 }
03642
03643 v->HandleLoading(mode);
03644
03645 if (v->current_order.IsType(OT_LOADING)) return true;
03646
03647 if (CheckTrainStayInDepot(v)) return true;
03648
03649 if (!mode) v->ShowVisualEffect();
03650
03651
03652 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03653 CheckNextTrainTile(v);
03654 }
03655
03656
03657 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03658 ++v->wait_counter;
03659
03660
03661 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03662
03663 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03664 if (!TryPathReserve(v)) {
03665
03666 if (turn_around) ReverseTrainDirection(v);
03667
03668 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03669
03670 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03671 SetDParam(0, v->index);
03672 AddVehicleNewsItem(
03673 STR_NEWS_TRAIN_IS_STUCK,
03674 NS_ADVICE,
03675 v->index
03676 );
03677 }
03678 v->wait_counter = 0;
03679 }
03680
03681 if (v->force_proceed == TFP_NONE) return true;
03682 ClrBit(v->flags, VRF_TRAIN_STUCK);
03683 v->wait_counter = 0;
03684 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03685 }
03686 }
03687
03688 if (v->current_order.IsType(OT_LEAVESTATION)) {
03689 v->current_order.Free();
03690 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03691 return true;
03692 }
03693
03694 int j = v->UpdateSpeed();
03695
03696
03697 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03698
03699 v->force_proceed = TFP_NONE;
03700 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03701 }
03702
03703 int adv_spd = v->GetAdvanceDistance();
03704 if (j < adv_spd) {
03705
03706 if (v->cur_speed == 0) v->SetLastSpeed();
03707 } else {
03708 TrainCheckIfLineEnds(v);
03709
03710 for (;;) {
03711 j -= adv_spd;
03712 TrainController(v, NULL);
03713
03714 if (CheckTrainCollision(v)) break;
03715
03716 adv_spd = v->GetAdvanceDistance();
03717
03718
03719 if (j < adv_spd || v->cur_speed == 0) break;
03720
03721 OrderType order_type = v->current_order.GetType();
03722
03723 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03724 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03725 IsTileType(v->tile, MP_STATION) &&
03726 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03727 ProcessOrders(v);
03728 }
03729 }
03730 v->SetLastSpeed();
03731 }
03732
03733 for (Train *u = v; u != NULL; u = u->Next()) {
03734 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03735
03736 u->UpdateViewport(false, false);
03737 }
03738
03739 if (v->progress == 0) v->progress = j;
03740
03741 return true;
03742 }
03743
03744
03745
03746 Money Train::GetRunningCost() const
03747 {
03748 Money cost = 0;
03749 const Train *v = this;
03750
03751 do {
03752 const Engine *e = v->GetEngine();
03753 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03754
03755 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03756 if (cost_factor == 0) continue;
03757
03758
03759 if (v->IsMultiheaded()) cost_factor /= 2;
03760
03761 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03762 } while ((v = v->GetNextVehicle()) != NULL);
03763
03764 return cost;
03765 }
03766
03767
03768 bool Train::Tick()
03769 {
03770 this->tick_counter++;
03771
03772 if (this->IsFrontEngine()) {
03773 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03774
03775 this->current_order_time++;
03776
03777 if (!TrainLocoHandler(this, false)) return false;
03778
03779 return TrainLocoHandler(this, true);
03780 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03781
03782 if (++this->crash_anim_pos >= 4400) {
03783 delete this;
03784 return false;
03785 }
03786 }
03787
03788 return true;
03789 }
03790
03791 static void CheckIfTrainNeedsService(Train *v)
03792 {
03793 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03794 if (v->IsInDepot()) {
03795 VehicleServiceInDepot(v);
03796 return;
03797 }
03798
03799 uint max_penalty;
03800 switch (_settings_game.pf.pathfinder_for_trains) {
03801 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03802 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03803 default: NOT_REACHED();
03804 }
03805
03806 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03807
03808 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03809 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03810
03811
03812
03813 v->current_order.MakeDummy();
03814 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03815 }
03816 return;
03817 }
03818
03819 DepotID depot = GetDepotIndex(tfdd.tile);
03820
03821 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03822 v->current_order.GetDestination() != depot &&
03823 !Chance16(3, 16)) {
03824 return;
03825 }
03826
03827 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03828 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03829 v->dest_tile = tfdd.tile;
03830 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03831 }
03832
03833 void Train::OnNewDay()
03834 {
03835 AgeVehicle(this);
03836
03837 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03838
03839 if (this->IsFrontEngine()) {
03840 CheckVehicleBreakdown(this);
03841
03842 CheckIfTrainNeedsService(this);
03843
03844 CheckOrders(this);
03845
03846
03847 if (this->current_order.IsType(OT_GOTO_STATION)) {
03848 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03849 if (tile != INVALID_TILE) this->dest_tile = tile;
03850 }
03851
03852 if (this->running_ticks != 0) {
03853
03854 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03855
03856 this->profit_this_year -= cost.GetCost();
03857 this->running_ticks = 0;
03858
03859 SubtractMoneyFromCompanyFract(this->owner, cost);
03860
03861 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03862 SetWindowClassesDirty(WC_TRAINS_LIST);
03863 }
03864 }
03865 }
03866
03867 Trackdir Train::GetVehicleTrackdir() const
03868 {
03869 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03870
03871 if (this->track == TRACK_BIT_DEPOT) {
03872
03873 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03874 }
03875
03876 if (this->track == TRACK_BIT_WORMHOLE) {
03877
03878 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03879 }
03880
03881 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
03882 }