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00012 #include "stdafx.h"
00013 #include "error.h"
00014 #include "articulated_vehicles.h"
00015 #include "command_func.h"
00016 #include "pathfinder/npf/npf_func.h"
00017 #include "pathfinder/yapf/yapf.hpp"
00018 #include "news_func.h"
00019 #include "company_func.h"
00020 #include "newgrf_sound.h"
00021 #include "newgrf_text.h"
00022 #include "strings_func.h"
00023 #include "viewport_func.h"
00024 #include "vehicle_func.h"
00025 #include "sound_func.h"
00026 #include "ai/ai.hpp"
00027 #include "game/game.hpp"
00028 #include "newgrf_station.h"
00029 #include "effectvehicle_func.h"
00030 #include "network/network.h"
00031 #include "spritecache.h"
00032 #include "core/random_func.hpp"
00033 #include "company_base.h"
00034 #include "newgrf.h"
00035 #include "order_backup.h"
00036 #include "zoom_func.h"
00037
00038 #include "table/strings.h"
00039 #include "table/train_cmd.h"
00040
00041 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00042 static bool TrainCheckIfLineEnds(Train *v, bool reverse = true);
00043 bool TrainController(Train *v, Vehicle *nomove, bool reverse = true);
00044 static TileIndex TrainApproachingCrossingTile(const Train *v);
00045 static void CheckIfTrainNeedsService(Train *v);
00046 static void CheckNextTrainTile(Train *v);
00047
00048 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00049 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00050
00051
00059 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00060 {
00061 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00062
00063 DiagDirection diagdir = DirToDiagDir(direction);
00064
00065
00066 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00067 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00068 }
00069
00070 return diagdir;
00071 }
00072
00073
00079 byte FreightWagonMult(CargoID cargo)
00080 {
00081 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00082 return _settings_game.vehicle.freight_trains;
00083 }
00084
00086 void CheckTrainsLengths()
00087 {
00088 const Train *v;
00089 bool first = true;
00090
00091 FOR_ALL_TRAINS(v) {
00092 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00093 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00094 if (u->track != TRACK_BIT_DEPOT) {
00095 if ((w->track != TRACK_BIT_DEPOT &&
00096 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->CalcNextVehicleOffset()) ||
00097 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00098 SetDParam(0, v->index);
00099 SetDParam(1, v->owner);
00100 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00101
00102 if (!_networking && first) {
00103 first = false;
00104 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00105 }
00106
00107 break;
00108 }
00109 }
00110 }
00111 }
00112 }
00113 }
00114
00121 void Train::ConsistChanged(bool same_length)
00122 {
00123 uint16 max_speed = UINT16_MAX;
00124
00125 assert(this->IsFrontEngine() || this->IsFreeWagon());
00126
00127 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00128 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00129 this->gcache.cached_total_length = 0;
00130 this->compatible_railtypes = RAILTYPES_NONE;
00131
00132 bool train_can_tilt = true;
00133
00134 for (Train *u = this; u != NULL; u = u->Next()) {
00135 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00136
00137
00138 assert(u->First() == this);
00139
00140
00141 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00142 u->railtype = rvi_u->railtype;
00143
00144 if (u->IsEngine()) first_engine = u->engine_type;
00145
00146
00147 u->tcache.user_def_data = rvi_u->user_def_data;
00148 this->InvalidateNewGRFCache();
00149 u->InvalidateNewGRFCache();
00150 }
00151
00152 for (Train *u = this; u != NULL; u = u->Next()) {
00153
00154 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00155 this->InvalidateNewGRFCache();
00156 u->InvalidateNewGRFCache();
00157 }
00158
00159 for (Train *u = this; u != NULL; u = u->Next()) {
00160 const Engine *e_u = u->GetEngine();
00161 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00162
00163 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00164
00165
00166 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00167
00168
00169 u->colourmap = PAL_NONE;
00170
00171
00172 u->UpdateVisualEffect(true);
00173
00174 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00175 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00176
00177 SetBit(u->flags, VRF_POWEREDWAGON);
00178 } else {
00179 ClrBit(u->flags, VRF_POWEREDWAGON);
00180 }
00181
00182 if (!u->IsArticulatedPart()) {
00183
00184
00185 if (rvi_u->power > 0) {
00186 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00187 }
00188
00189
00190
00191 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00192 u->railtype = RAILTYPE_RAIL;
00193 u->compatible_railtypes |= RAILTYPES_RAIL;
00194 }
00195
00196
00197 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00198 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00199 if (speed != 0) max_speed = min(speed, max_speed);
00200 }
00201 }
00202
00203 uint16 new_cap = e_u->DetermineCapacity(u);
00204 u->refit_cap = min(new_cap, u->refit_cap);
00205 u->cargo_cap = new_cap;
00206 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00207
00208
00209 uint16 veh_len = CALLBACK_FAILED;
00210 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00211
00212 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00213
00214 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00215 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00216 }
00217 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00218
00219 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00220 }
00221 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00222 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00223
00224
00225 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00226
00227
00228 if (!same_length) u->gcache.cached_veh_length = veh_len;
00229
00230 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00231 this->InvalidateNewGRFCache();
00232 u->InvalidateNewGRFCache();
00233 }
00234
00235
00236 this->vcache.cached_max_speed = max_speed;
00237 this->tcache.cached_tilt = train_can_tilt;
00238 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00239
00240
00241 this->CargoChanged();
00242
00243 if (this->IsFrontEngine()) {
00244 this->UpdateAcceleration();
00245 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00246 InvalidateWindowData(WC_VEHICLE_REFIT, this->index, VIWD_CONSIST_CHANGED);
00247 InvalidateWindowData(WC_VEHICLE_ORDERS, this->index, VIWD_CONSIST_CHANGED);
00248 }
00249 }
00250
00261 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00262 {
00263 const Station *st = Station::Get(station_id);
00264 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00265 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00266
00267
00268
00269 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00270 if (v->gcache.cached_total_length >= *station_length) {
00271
00272 osl = OSL_PLATFORM_FAR_END;
00273 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00274 osl = v->current_order.GetStopLocation();
00275 }
00276
00277
00278 int stop;
00279 switch (osl) {
00280 default: NOT_REACHED();
00281
00282 case OSL_PLATFORM_NEAR_END:
00283 stop = v->gcache.cached_total_length;
00284 break;
00285
00286 case OSL_PLATFORM_MIDDLE:
00287 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00288 break;
00289
00290 case OSL_PLATFORM_FAR_END:
00291 stop = *station_length;
00292 break;
00293 }
00294
00295
00296
00297 return stop - (v->gcache.cached_veh_length + 1) / 2;
00298 }
00299
00300
00305 int Train::GetCurveSpeedLimit() const
00306 {
00307 assert(this->First() == this);
00308
00309 static const int absolute_max_speed = UINT16_MAX;
00310 int max_speed = absolute_max_speed;
00311
00312 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00313
00314 int curvecount[2] = {0, 0};
00315
00316
00317 int numcurve = 0;
00318 int sum = 0;
00319 int pos = 0;
00320 int lastpos = -1;
00321 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00322 Direction this_dir = u->direction;
00323 Direction next_dir = u->Next()->direction;
00324
00325 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00326 if (dirdiff == DIRDIFF_SAME) continue;
00327
00328 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00329 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00330 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00331 if (lastpos != -1) {
00332 numcurve++;
00333 sum += pos - lastpos;
00334 if (pos - lastpos == 1 && max_speed > 88) {
00335 max_speed = 88;
00336 }
00337 }
00338 lastpos = pos;
00339 }
00340
00341
00342 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00343 max_speed = 61;
00344 }
00345 }
00346
00347 if (numcurve > 0 && max_speed > 88) {
00348 if (curvecount[0] == 1 && curvecount[1] == 1) {
00349 max_speed = absolute_max_speed;
00350 } else {
00351 sum /= numcurve;
00352 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00353 }
00354 }
00355
00356 if (max_speed != absolute_max_speed) {
00357
00358 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00359 max_speed += (max_speed / 2) * rti->curve_speed;
00360
00361 if (this->tcache.cached_tilt) {
00362
00363 max_speed += max_speed / 5;
00364 }
00365 }
00366
00367 return max_speed;
00368 }
00369
00374 int Train::GetCurrentMaxSpeed() const
00375 {
00376 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return min(this->gcache.cached_max_track_speed, this->current_order.max_speed);
00377
00378 int max_speed = this->tcache.cached_max_curve_speed;
00379 if (IsRailStationTile(this->tile)) {
00380 StationID sid = GetStationIndex(this->tile);
00381 if (this->current_order.ShouldStopAtStation(this, sid)) {
00382 int station_ahead;
00383 int station_length;
00384 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00385
00386
00387
00388 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00389
00390 if (distance_to_go > 0) {
00391 int st_max_speed = 120;
00392
00393 int delta_v = this->cur_speed / (distance_to_go + 1);
00394 if (max_speed > (this->cur_speed - delta_v)) {
00395 st_max_speed = this->cur_speed - (delta_v / 10);
00396 }
00397
00398 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00399 max_speed = min(max_speed, st_max_speed);
00400 }
00401 }
00402 }
00403
00404 for (const Train *u = this; u != NULL; u = u->Next()) {
00405 if (u->track == TRACK_BIT_DEPOT) {
00406 max_speed = min(max_speed, 61);
00407 break;
00408 }
00409
00410
00411 if (u->track == TRACK_BIT_WORMHOLE && !(u->vehstatus & VS_HIDDEN)) {
00412 max_speed = min(max_speed, GetBridgeSpec(GetBridgeType(u->tile))->speed);
00413 }
00414 }
00415
00416 max_speed = min(max_speed, this->current_order.max_speed);
00417 return min(max_speed, this->gcache.cached_max_track_speed);
00418 }
00419
00421 void Train::UpdateAcceleration()
00422 {
00423 assert(this->IsFrontEngine());
00424
00425 uint power = this->gcache.cached_power;
00426 uint weight = this->gcache.cached_weight;
00427 assert(weight != 0);
00428 this->acceleration = Clamp(power / weight * 4, 1, 255);
00429 }
00430
00436 int Train::GetDisplayImageWidth(Point *offset) const
00437 {
00438 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00439 int vehicle_pitch = 0;
00440
00441 const Engine *e = this->GetEngine();
00442 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00443 reference_width = e->GetGRF()->traininfo_vehicle_width;
00444 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00445 }
00446
00447 if (offset != NULL) {
00448 offset->x = reference_width / 2;
00449 offset->y = vehicle_pitch;
00450 }
00451 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00452 }
00453
00454 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00455 {
00456 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00457 }
00458
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
00541 void GetTrainSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
00542 {
00543 int y = 0;
00544
00545 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00546 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00547
00548 width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
00549 height = UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI);
00550 xoffs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
00551 yoffs = UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI);
00552
00553 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00554 sprite = GetRailIcon(engine, true, y, image_type);
00555 real_sprite = GetSprite(sprite, ST_NORMAL);
00556
00557
00558 width = TRAININFO_DEFAULT_VEHICLE_WIDTH + UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) + UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI) - xoffs;
00559 height = max<uint>(height, UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI));
00560 xoffs = xoffs - TRAININFO_DEFAULT_VEHICLE_WIDTH / 2;
00561 yoffs = min(yoffs, UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI));
00562 }
00563 }
00564
00573 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00574 {
00575 const RailVehicleInfo *rvi = &e->u.rail;
00576
00577
00578 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00579
00580 if (flags & DC_EXEC) {
00581 Train *v = new Train();
00582 *ret = v;
00583 v->spritenum = rvi->image_index;
00584
00585 v->engine_type = e->index;
00586 v->gcache.first_engine = INVALID_ENGINE;
00587
00588 DiagDirection dir = GetRailDepotDirection(tile);
00589
00590 v->direction = DiagDirToDir(dir);
00591 v->tile = tile;
00592
00593 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00594 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00595
00596 v->x_pos = x;
00597 v->y_pos = y;
00598 v->z_pos = GetSlopePixelZ(x, y);
00599 v->owner = _current_company;
00600 v->track = TRACK_BIT_DEPOT;
00601 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00602
00603 v->SetWagon();
00604
00605 v->SetFreeWagon();
00606 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00607
00608 v->cargo_type = e->GetDefaultCargoType();
00609 v->cargo_cap = rvi->capacity;
00610 v->refit_cap = 0;
00611
00612 v->railtype = rvi->railtype;
00613
00614 v->build_year = _cur_year;
00615 v->cur_image = SPR_IMG_QUERY;
00616 v->random_bits = VehicleRandomBits();
00617
00618 v->group_id = DEFAULT_GROUP;
00619
00620 AddArticulatedParts(v);
00621
00622 _new_vehicle_id = v->index;
00623
00624 VehicleUpdatePosition(v);
00625 v->First()->ConsistChanged(false);
00626 UpdateTrainGroupID(v->First());
00627
00628 CheckConsistencyOfArticulatedVehicle(v);
00629
00630
00631 Train *w;
00632 FOR_ALL_TRAINS(w) {
00633 if (w->tile == tile &&
00634 w->IsFreeWagon() &&
00635 w->engine_type == e->index &&
00636 w->First() != v &&
00637 !(w->vehstatus & VS_CRASHED)) {
00638 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00639 break;
00640 }
00641 }
00642 }
00643
00644 return CommandCost();
00645 }
00646
00648 static void NormalizeTrainVehInDepot(const Train *u)
00649 {
00650 const Train *v;
00651 FOR_ALL_TRAINS(v) {
00652 if (v->IsFreeWagon() && v->tile == u->tile &&
00653 v->track == TRACK_BIT_DEPOT) {
00654 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00655 CMD_MOVE_RAIL_VEHICLE).Failed())
00656 break;
00657 }
00658 }
00659 }
00660
00661 static void AddRearEngineToMultiheadedTrain(Train *v)
00662 {
00663 Train *u = new Train();
00664 v->value >>= 1;
00665 u->value = v->value;
00666 u->direction = v->direction;
00667 u->owner = v->owner;
00668 u->tile = v->tile;
00669 u->x_pos = v->x_pos;
00670 u->y_pos = v->y_pos;
00671 u->z_pos = v->z_pos;
00672 u->track = TRACK_BIT_DEPOT;
00673 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00674 u->spritenum = v->spritenum + 1;
00675 u->cargo_type = v->cargo_type;
00676 u->cargo_subtype = v->cargo_subtype;
00677 u->cargo_cap = v->cargo_cap;
00678 u->refit_cap = v->refit_cap;
00679 u->railtype = v->railtype;
00680 u->engine_type = v->engine_type;
00681 u->build_year = v->build_year;
00682 u->cur_image = SPR_IMG_QUERY;
00683 u->random_bits = VehicleRandomBits();
00684 v->SetMultiheaded();
00685 u->SetMultiheaded();
00686 v->SetNext(u);
00687 VehicleUpdatePosition(u);
00688
00689
00690 v->other_multiheaded_part = u;
00691 u->other_multiheaded_part = v;
00692 }
00693
00703 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00704 {
00705 const RailVehicleInfo *rvi = &e->u.rail;
00706
00707 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00708
00709
00710
00711 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00712
00713 if (flags & DC_EXEC) {
00714 DiagDirection dir = GetRailDepotDirection(tile);
00715 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00716 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00717
00718 Train *v = new Train();
00719 *ret = v;
00720 v->direction = DiagDirToDir(dir);
00721 v->tile = tile;
00722 v->owner = _current_company;
00723 v->x_pos = x;
00724 v->y_pos = y;
00725 v->z_pos = GetSlopePixelZ(x, y);
00726 v->track = TRACK_BIT_DEPOT;
00727 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00728 v->spritenum = rvi->image_index;
00729 v->cargo_type = e->GetDefaultCargoType();
00730 v->cargo_cap = rvi->capacity;
00731 v->refit_cap = 0;
00732 v->last_station_visited = INVALID_STATION;
00733 v->last_loading_station = INVALID_STATION;
00734
00735 v->engine_type = e->index;
00736 v->gcache.first_engine = INVALID_ENGINE;
00737
00738 v->reliability = e->reliability;
00739 v->reliability_spd_dec = e->reliability_spd_dec;
00740 v->max_age = e->GetLifeLengthInDays();
00741
00742 v->railtype = rvi->railtype;
00743 _new_vehicle_id = v->index;
00744
00745 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00746 v->date_of_last_service = _date;
00747 v->build_year = _cur_year;
00748 v->cur_image = SPR_IMG_QUERY;
00749 v->random_bits = VehicleRandomBits();
00750
00751 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00752
00753 v->group_id = DEFAULT_GROUP;
00754
00755 v->SetFrontEngine();
00756 v->SetEngine();
00757
00758 VehicleUpdatePosition(v);
00759
00760 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00761 AddRearEngineToMultiheadedTrain(v);
00762 } else {
00763 AddArticulatedParts(v);
00764 }
00765
00766 v->ConsistChanged(false);
00767 UpdateTrainGroupID(v);
00768
00769 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00770 NormalizeTrainVehInDepot(v);
00771 }
00772
00773 CheckConsistencyOfArticulatedVehicle(v);
00774 }
00775
00776 return CommandCost();
00777 }
00778
00779 static Train *FindGoodVehiclePos(const Train *src)
00780 {
00781 EngineID eng = src->engine_type;
00782 TileIndex tile = src->tile;
00783
00784 Train *dst;
00785 FOR_ALL_TRAINS(dst) {
00786 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00787
00788 Train *t = dst;
00789 while (t->engine_type == eng) {
00790 t = t->Next();
00791 if (t == NULL) return dst;
00792 }
00793 }
00794 }
00795
00796 return NULL;
00797 }
00798
00800 typedef SmallVector<Train *, 16> TrainList;
00801
00807 static void MakeTrainBackup(TrainList &list, Train *t)
00808 {
00809 for (; t != NULL; t = t->Next()) *list.Append() = t;
00810 }
00811
00816 static void RestoreTrainBackup(TrainList &list)
00817 {
00818
00819 if (list.Length() == 0) return;
00820
00821 Train *prev = NULL;
00822
00823 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00824 Train *t = *iter;
00825 if (prev != NULL) {
00826 prev->SetNext(t);
00827 } else if (t->Previous() != NULL) {
00828
00829 t->Previous()->SetNext(NULL);
00830 }
00831 prev = t;
00832 }
00833 }
00834
00840 static void RemoveFromConsist(Train *part, bool chain = false)
00841 {
00842 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00843
00844
00845
00846 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00847
00848
00849 tail->SetNext(NULL);
00850 }
00851
00857 static void InsertInConsist(Train *dst, Train *chain)
00858 {
00859
00860 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00861
00862 chain->Last()->SetNext(dst->Next());
00863 dst->SetNext(chain);
00864 }
00865
00871 static void NormaliseDualHeads(Train *t)
00872 {
00873 for (; t != NULL; t = t->GetNextVehicle()) {
00874 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00875
00876
00877 Train *u;
00878 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00879
00880 if (u == t->other_multiheaded_part) continue;
00881
00882
00883 RemoveFromConsist(t->other_multiheaded_part);
00884
00885 InsertInConsist(u, t->other_multiheaded_part);
00886 }
00887 }
00888
00893 static void NormaliseSubtypes(Train *chain)
00894 {
00895
00896 if (chain == NULL) return;
00897
00898
00899 assert(chain->Previous() == NULL);
00900
00901
00902 if (chain->IsWagon()) {
00903 chain->SetFreeWagon();
00904 } else {
00905 assert(chain->IsEngine());
00906 chain->SetFrontEngine();
00907 }
00908
00909
00910 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00911 t->ClearFreeWagon();
00912 t->ClearFrontEngine();
00913 }
00914 }
00915
00925 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00926 {
00927
00928
00929
00930 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00931 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00932 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00933 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00934 return CommandCost();
00935 }
00936
00937
00938
00939 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00940
00941 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00942 }
00943
00949 static CommandCost CheckTrainAttachment(Train *t)
00950 {
00951
00952 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00953
00954
00955
00956 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00957
00958 Train *head = t;
00959 Train *prev = t;
00960
00961
00962 t = t->Next();
00963 prev->SetNext(NULL);
00964
00965
00966 head->InvalidateNewGRFCache();
00967
00968 while (t != NULL) {
00969 allowed_len -= t->gcache.cached_veh_length;
00970
00971 Train *next = t->Next();
00972
00973
00974
00975 t->SetNext(NULL);
00976
00977
00978 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00979
00980 EngineID first_engine = t->gcache.first_engine;
00981 t->gcache.first_engine = INVALID_ENGINE;
00982
00983
00984
00985 t->InvalidateNewGRFCache();
00986
00987 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00988
00989
00990 t->gcache.first_engine = first_engine;
00991
00992
00993 t->InvalidateNewGRFCache();
00994 head->InvalidateNewGRFCache();
00995
00996 if (callback != CALLBACK_FAILED) {
00997
00998 StringID error = STR_NULL;
00999
01000 if (head->GetGRF()->grf_version < 8) {
01001 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01002 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01003 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
01004 } else {
01005 if (callback < 0x400) {
01006 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01007 } else {
01008 switch (callback) {
01009 case 0x400:
01010 case 0x401:
01011 break;
01012
01013 default:
01014 case 0x402:
01015 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01016 break;
01017 }
01018 }
01019 }
01020
01021 if (error != STR_NULL) return_cmd_error(error);
01022 }
01023 }
01024
01025
01026 prev->SetNext(t);
01027 prev = t;
01028 t = next;
01029 }
01030
01031 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01032 return CommandCost();
01033 }
01034
01045 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01046 {
01047
01048 CommandCost ret = CheckTrainAttachment(src);
01049 if (ret.Failed()) return ret;
01050 ret = CheckTrainAttachment(dst);
01051 if (ret.Failed()) return ret;
01052
01053
01054 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01055 }
01056
01065 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01066 {
01067
01068 if (*src_head == *dst_head) {
01069
01070
01071 *dst_head = NULL;
01072 } else if (*dst_head == NULL) {
01073
01074
01075 *dst_head = src;
01076 }
01077
01078 if (src == *src_head) {
01079
01080
01081
01082
01083
01084
01085 *src_head = move_chain ? NULL :
01086 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01087 }
01088
01089
01090
01091
01092 RemoveFromConsist(src, move_chain);
01093 if (*dst_head != src) InsertInConsist(dst, src);
01094
01095
01096
01097 NormaliseDualHeads(*src_head);
01098 NormaliseDualHeads(*dst_head);
01099 }
01100
01106 static void NormaliseTrainHead(Train *head)
01107 {
01108
01109 if (head == NULL) return;
01110
01111
01112 head->ConsistChanged(false);
01113 UpdateTrainGroupID(head);
01114
01115
01116 if (!head->IsFrontEngine()) return;
01117
01118
01119 InvalidateWindowData(WC_VEHICLE_REFIT, head->index, VIWD_CONSIST_CHANGED);
01120 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01121
01122
01123 if (head->unitnumber != 0) return;
01124 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01125 }
01126
01139 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01140 {
01141 VehicleID s = GB(p1, 0, 20);
01142 VehicleID d = GB(p2, 0, 20);
01143 bool move_chain = HasBit(p1, 20);
01144
01145 Train *src = Train::GetIfValid(s);
01146 if (src == NULL) return CMD_ERROR;
01147
01148 CommandCost ret = CheckOwnership(src->owner);
01149 if (ret.Failed()) return ret;
01150
01151
01152 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01153
01154
01155 Train *dst;
01156 if (d == INVALID_VEHICLE) {
01157 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01158 } else {
01159 dst = Train::GetIfValid(d);
01160 if (dst == NULL) return CMD_ERROR;
01161
01162 CommandCost ret = CheckOwnership(dst->owner);
01163 if (ret.Failed()) return ret;
01164
01165
01166 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01167 }
01168
01169
01170 src = src->GetFirstEnginePart();
01171 if (dst != NULL) {
01172 dst = dst->GetFirstEnginePart();
01173 }
01174
01175
01176 if (src == dst) return CommandCost();
01177
01178
01179 Train *src_head = src->First();
01180 Train *dst_head;
01181 if (dst != NULL) {
01182 dst_head = dst->First();
01183 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01184
01185 dst = dst->GetLastEnginePart();
01186 } else {
01187 dst_head = NULL;
01188 }
01189
01190 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01191
01192
01193 if (move_chain && src_head == dst_head) return CommandCost();
01194
01195
01196 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01197
01198
01199 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01200
01201
01202 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01203
01204
01205
01206 TrainList original_src;
01207 TrainList original_dst;
01208
01209 MakeTrainBackup(original_src, src_head);
01210 MakeTrainBackup(original_dst, dst_head);
01211
01212
01213
01214
01215 Train *original_src_head = src_head;
01216 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01217
01218
01219 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01220 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01221
01222
01223 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01224
01225 if ((flags & DC_AUTOREPLACE) == 0) {
01226
01227
01228
01229 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01230 if (ret.Failed()) {
01231
01232 RestoreTrainBackup(original_src);
01233 RestoreTrainBackup(original_dst);
01234 return ret;
01235 }
01236 }
01237
01238
01239 if (flags & DC_EXEC) {
01240
01241 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01242 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01243
01244
01245 NormaliseSubtypes(src_head);
01246 NormaliseSubtypes(dst_head);
01247
01248
01249
01250
01251
01252
01253
01254
01255
01256
01257
01258
01259
01260
01261
01262
01263
01264
01265
01266
01267
01268 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01269
01270 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01271 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01272 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01273 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01274 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01275 SetWindowDirty(WC_COMPANY, _current_company);
01276
01277
01278
01279 DeleteVehicleOrders(src);
01280 RemoveVehicleFromGroup(src);
01281 src->unitnumber = 0;
01282 }
01283
01284
01285
01286 if (original_src_head != src && dst_head == src) {
01287 SetTrainGroupID(src, DEFAULT_GROUP);
01288 SetWindowDirty(WC_COMPANY, _current_company);
01289 }
01290
01291
01292 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01293 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01294
01295
01296 NormaliseTrainHead(src_head);
01297 NormaliseTrainHead(dst_head);
01298
01299 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01300 CheckCargoCapacity(src_head);
01301 CheckCargoCapacity(dst_head);
01302 }
01303
01304
01305 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01306 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01307 } else {
01308
01309 RestoreTrainBackup(original_src);
01310 RestoreTrainBackup(original_dst);
01311 }
01312
01313 return CommandCost();
01314 }
01315
01327 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01328 {
01329
01330 Window *w = NULL;
01331
01332
01333 bool sell_chain = HasBit(data, 0);
01334
01335 Train *v = Train::From(t)->GetFirstEnginePart();
01336 Train *first = v->First();
01337
01338 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01339
01340
01341
01342 TrainList original;
01343 MakeTrainBackup(original, first);
01344
01345
01346 Train *new_head = first;
01347 Train *sell_head = NULL;
01348
01349
01350 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01351
01352
01353 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01354 if (ret.Failed()) {
01355
01356 RestoreTrainBackup(original);
01357 return ret;
01358 }
01359
01360 CommandCost cost(EXPENSES_NEW_VEHICLES);
01361 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01362
01363 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01364 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01365 }
01366
01367
01368 if (flags & DC_EXEC) {
01369
01370 NormaliseSubtypes(new_head);
01371
01372 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01373
01374
01375 new_head->orders.list = first->orders.list;
01376 new_head->AddToShared(first);
01377 DeleteVehicleOrders(first);
01378
01379
01380 new_head->CopyVehicleConfigAndStatistics(first);
01381 GroupStatistics::CountVehicle(new_head, 1);
01382
01383
01384 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01385 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01386 OrderBackup::Backup(v, user);
01387 }
01388
01389
01390 NormaliseTrainHead(new_head);
01391
01392
01393 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01394 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01395
01396
01397 delete sell_head;
01398 } else {
01399
01400 RestoreTrainBackup(original);
01401 }
01402
01403 return cost;
01404 }
01405
01406 void Train::UpdateDeltaXY(Direction direction)
01407 {
01408
01409 this->x_offs = -1;
01410 this->y_offs = -1;
01411 this->x_extent = 3;
01412 this->y_extent = 3;
01413 this->z_extent = 6;
01414 this->x_bb_offs = 0;
01415 this->y_bb_offs = 0;
01416
01417 if (!IsDiagonalDirection(direction)) {
01418 static const int _sign_table[] =
01419 {
01420
01421 -1, -1,
01422 -1, 1,
01423 1, 1,
01424 1, -1,
01425 };
01426
01427 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01428
01429
01430 this->x_offs -= half_shorten * _sign_table[direction];
01431 this->y_offs -= half_shorten * _sign_table[direction + 1];
01432 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01433 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01434 } else {
01435 switch (direction) {
01436
01437
01438 case DIR_NE:
01439 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01440 this->x_extent = this->gcache.cached_veh_length - 1;
01441 this->x_bb_offs = -1;
01442 break;
01443
01444 case DIR_NW:
01445 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01446 this->y_extent = this->gcache.cached_veh_length - 1;
01447 this->y_bb_offs = -1;
01448 break;
01449
01450
01451
01452 case DIR_SW:
01453 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01454 this->x_extent = VEHICLE_LENGTH - 1;
01455 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01456 break;
01457
01458 case DIR_SE:
01459 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01460 this->y_extent = VEHICLE_LENGTH - 1;
01461 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01462 break;
01463
01464 default:
01465 NOT_REACHED();
01466 }
01467 }
01468 }
01469
01474 static void MarkTrainAsStuck(Train *v)
01475 {
01476 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01477
01478 SetBit(v->flags, VRF_TRAIN_STUCK);
01479
01480 v->wait_counter = 0;
01481
01482
01483 v->cur_speed = 0;
01484 v->subspeed = 0;
01485 v->SetLastSpeed();
01486
01487 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01488 }
01489 }
01490
01498 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01499 {
01500 uint16 flag1 = *swap_flag1;
01501 uint16 flag2 = *swap_flag2;
01502
01503
01504 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01505 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01506 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01507 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01508
01509
01510 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01511 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01512 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01513 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01514 }
01515 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01516 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01517 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01518 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01519 }
01520 }
01521
01526 static void UpdateStatusAfterSwap(Train *v)
01527 {
01528
01529 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01530
01531
01532 if (v->track != TRACK_BIT_WORMHOLE) {
01533 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01534 } else {
01535
01536
01537
01538
01539 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01540 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01541 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01542 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01543
01544
01545
01546 VehicleUpdatePosition(v);
01547 v->UpdateInclination(true, true);
01548 return;
01549 }
01550 }
01551 }
01552
01553 VehicleUpdatePosition(v);
01554 v->UpdateViewport(true, true);
01555 }
01556
01563 void ReverseTrainSwapVeh(Train *v, int l, int r)
01564 {
01565 Train *a, *b;
01566
01567
01568 for (a = v; l != 0; l--) a = a->Next();
01569 for (b = v; r != 0; r--) b = b->Next();
01570
01571 if (a != b) {
01572
01573 {
01574 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01575 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01576 a->vehstatus = tmp;
01577 }
01578
01579 Swap(a->track, b->track);
01580 Swap(a->direction, b->direction);
01581 Swap(a->x_pos, b->x_pos);
01582 Swap(a->y_pos, b->y_pos);
01583 Swap(a->tile, b->tile);
01584 Swap(a->z_pos, b->z_pos);
01585
01586 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01587
01588 UpdateStatusAfterSwap(a);
01589 UpdateStatusAfterSwap(b);
01590 } else {
01591
01592
01593
01594 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01595 UpdateStatusAfterSwap(a);
01596 }
01597 }
01598
01599
01605 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01606 {
01607 return (v->type == VEH_TRAIN) ? v : NULL;
01608 }
01609
01610
01617 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01618 {
01619 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01620
01621 Train *t = Train::From(v);
01622 if (!t->IsFrontEngine()) return NULL;
01623
01624 TileIndex tile = *(TileIndex *)data;
01625
01626 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01627
01628 return t;
01629 }
01630
01631
01638 static bool TrainApproachingCrossing(TileIndex tile)
01639 {
01640 assert(IsLevelCrossingTile(tile));
01641
01642 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01643 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01644
01645 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01646
01647 dir = ReverseDiagDir(dir);
01648 tile_from = tile + TileOffsByDiagDir(dir);
01649
01650 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01651 }
01652
01653
01660 void UpdateLevelCrossing(TileIndex tile, bool sound)
01661 {
01662 assert(IsLevelCrossingTile(tile));
01663
01664
01665 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01666
01667 if (new_state != IsCrossingBarred(tile)) {
01668 if (new_state && sound) {
01669 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01670 }
01671 SetCrossingBarred(tile, new_state);
01672 MarkTileDirtyByTile(tile);
01673 }
01674 }
01675
01676
01682 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01683 {
01684 if (!IsCrossingBarred(tile)) {
01685 BarCrossing(tile);
01686 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01687 MarkTileDirtyByTile(tile);
01688 }
01689 }
01690
01691
01697 static void AdvanceWagonsBeforeSwap(Train *v)
01698 {
01699 Train *base = v;
01700 Train *first = base;
01701 Train *last = v->Last();
01702 uint length = CountVehiclesInChain(v);
01703
01704 while (length > 2) {
01705 last = last->Previous();
01706 first = first->Next();
01707
01708 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01709
01710
01711
01712 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01713
01714 base = first;
01715 length -= 2;
01716 }
01717 }
01718
01719
01725 static void AdvanceWagonsAfterSwap(Train *v)
01726 {
01727
01728 Train *dep = v;
01729 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01730 dep = dep->Next();
01731 }
01732
01733 Train *leave = dep->Next();
01734
01735 if (leave != NULL) {
01736
01737 int d = TicksToLeaveDepot(dep);
01738
01739 if (d <= 0) {
01740 leave->vehstatus &= ~VS_HIDDEN;
01741 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01742 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01743 }
01744 } else {
01745 dep = NULL;
01746 }
01747
01748 Train *base = v;
01749 Train *first = base;
01750 Train *last = v->Last();
01751 uint length = CountVehiclesInChain(v);
01752
01753
01754
01755 bool nomove = (dep == NULL);
01756
01757 while (length > 2) {
01758
01759
01760 if (base == dep) break;
01761
01762
01763 if (last == dep) nomove = true;
01764
01765 last = last->Previous();
01766 first = first->Next();
01767
01768 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01769
01770
01771 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01772
01773 base = first;
01774 length -= 2;
01775 }
01776 }
01777
01782 void ReverseTrainDirection(Train *v)
01783 {
01784 if (IsRailDepotTile(v->tile)) {
01785 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01786 }
01787
01788
01789 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01790
01791
01792 TileIndex crossing = TrainApproachingCrossingTile(v);
01793
01794
01795 int r = CountVehiclesInChain(v) - 1;
01796
01797 AdvanceWagonsBeforeSwap(v);
01798
01799
01800 int l = 0;
01801 do {
01802 ReverseTrainSwapVeh(v, l++, r--);
01803 } while (l <= r);
01804
01805 AdvanceWagonsAfterSwap(v);
01806
01807 if (IsRailDepotTile(v->tile)) {
01808 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01809 }
01810
01811 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01812
01813 ClrBit(v->flags, VRF_REVERSING);
01814
01815
01816 v->ConsistChanged(true);
01817
01818
01819 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01820
01821
01822 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01823
01824
01825 crossing = TrainApproachingCrossingTile(v);
01826 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01827
01828
01829 if (v->track == TRACK_BIT_DEPOT) {
01830
01831 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01832 ClrBit(v->flags, VRF_TRAIN_STUCK);
01833 return;
01834 }
01835
01836
01837
01838 DiagDirection dir = TrainExitDir(v->direction, v->track);
01839 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01840
01841 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01842
01843
01844 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01845 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01846 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01847
01848
01849 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01850
01851 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01852 if (TryPathReserve(v, false, first_tile_okay)) {
01853
01854 CheckNextTrainTile(v);
01855 } else if (v->current_order.GetType() != OT_LOADING) {
01856
01857 MarkTrainAsStuck(v);
01858 }
01859 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01860
01861 ClrBit(v->flags, VRF_TRAIN_STUCK);
01862 v->wait_counter = 0;
01863 }
01864 }
01865
01875 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01876 {
01877 Train *v = Train::GetIfValid(p1);
01878 if (v == NULL) return CMD_ERROR;
01879
01880 CommandCost ret = CheckOwnership(v->owner);
01881 if (ret.Failed()) return ret;
01882
01883 if (p2 != 0) {
01884
01885
01886 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01887 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01888 }
01889 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01890
01891 Train *front = v->First();
01892
01893 if (!front->IsStoppedInDepot()) {
01894 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01895 }
01896
01897 if (flags & DC_EXEC) {
01898 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01899
01900 front->ConsistChanged(false);
01901 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01902 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01903 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01904 SetWindowClassesDirty(WC_TRAINS_LIST);
01905 }
01906 } else {
01907
01908 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01909
01910 if (flags & DC_EXEC) {
01911
01912 if (v->current_order.IsType(OT_LOADING)) {
01913 const Vehicle *last = v;
01914 while (last->Next() != NULL) last = last->Next();
01915
01916
01917 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01918 v->LeaveStation();
01919 }
01920 }
01921
01922
01923 v->force_proceed = TFP_NONE;
01924 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01925
01926 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01927 ToggleBit(v->flags, VRF_REVERSING);
01928 } else {
01929 v->cur_speed = 0;
01930 v->SetLastSpeed();
01931 HideFillingPercent(&v->fill_percent_te_id);
01932 ReverseTrainDirection(v);
01933 }
01934 }
01935 }
01936 return CommandCost();
01937 }
01938
01948 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01949 {
01950 Train *t = Train::GetIfValid(p1);
01951 if (t == NULL) return CMD_ERROR;
01952
01953 if (!t->IsPrimaryVehicle()) return CMD_ERROR;
01954
01955 CommandCost ret = CheckOwnership(t->owner);
01956 if (ret.Failed()) return ret;
01957
01958
01959 if (flags & DC_EXEC) {
01960
01961
01962
01963
01964
01965 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsChainInDepot() ? TFP_STUCK : TFP_SIGNAL;
01966 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01967 }
01968
01969 return CommandCost();
01970 }
01971
01979 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01980 {
01981 assert(!(v->vehstatus & VS_CRASHED));
01982
01983 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01984
01985 PBSTileInfo origin = FollowTrainReservation(v);
01986 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01987
01988 switch (_settings_game.pf.pathfinder_for_trains) {
01989 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01990 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01991
01992 default: NOT_REACHED();
01993 }
01994 }
01995
02003 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02004 {
02005 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02006 if (tfdd.best_length == UINT_MAX) return false;
02007
02008 if (location != NULL) *location = tfdd.tile;
02009 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02010 if (reverse != NULL) *reverse = tfdd.reverse;
02011
02012 return true;
02013 }
02014
02016 void Train::PlayLeaveStationSound() const
02017 {
02018 static const SoundFx sfx[] = {
02019 SND_04_TRAIN,
02020 SND_0A_TRAIN_HORN,
02021 SND_0A_TRAIN_HORN,
02022 SND_47_MAGLEV_2,
02023 SND_41_MAGLEV
02024 };
02025
02026 if (PlayVehicleSound(this, VSE_START)) return;
02027
02028 EngineID engtype = this->engine_type;
02029 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02030 }
02031
02036 static void CheckNextTrainTile(Train *v)
02037 {
02038
02039 if (_settings_game.pf.path_backoff_interval == 255) return;
02040
02041
02042 if (v->track == TRACK_BIT_DEPOT) return;
02043
02044 switch (v->current_order.GetType()) {
02045
02046 case OT_GOTO_DEPOT:
02047 if (v->tile == v->dest_tile) return;
02048 break;
02049
02050 case OT_GOTO_WAYPOINT:
02051
02052 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02053 break;
02054
02055 case OT_NOTHING:
02056 case OT_LEAVESTATION:
02057 case OT_LOADING:
02058
02059 if (v->GetNumOrders() > 0) return;
02060 break;
02061
02062 default:
02063 break;
02064 }
02065
02066 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02067
02068 Trackdir td = v->GetVehicleTrackdir();
02069
02070
02071 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02072 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02073 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02074
02075 CFollowTrackRail ft(v);
02076 if (!ft.Follow(v->tile, td)) return;
02077
02078 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02079
02080 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02081 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02082
02083 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02084 if (_settings_game.pf.forbid_90_deg) {
02085 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02086 }
02087 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02088 }
02089 }
02090 }
02091 }
02092
02098 static bool CheckTrainStayInDepot(Train *v)
02099 {
02100
02101 for (const Train *u = v; u != NULL; u = u->Next()) {
02102 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02103 }
02104
02105
02106 if (v->gcache.cached_power == 0) {
02107 v->vehstatus |= VS_STOPPED;
02108 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02109 return true;
02110 }
02111
02112 SigSegState seg_state;
02113
02114 if (v->force_proceed == TFP_NONE) {
02115
02116 if (++v->wait_counter < 37) {
02117 SetWindowClassesDirty(WC_TRAINS_LIST);
02118 return true;
02119 }
02120
02121 v->wait_counter = 0;
02122
02123 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02124 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02125
02126 SetWindowClassesDirty(WC_TRAINS_LIST);
02127 return true;
02128 }
02129 } else {
02130 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02131 }
02132
02133
02134 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02135
02136 if (HasDepotReservation(v->tile)) return true;
02137 SetDepotReservation(v->tile, true);
02138 VehicleEnterDepot(v);
02139 return true;
02140 }
02141
02142
02143 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02144
02145 SetWindowClassesDirty(WC_TRAINS_LIST);
02146 MarkTrainAsStuck(v);
02147 return true;
02148 }
02149
02150 SetDepotReservation(v->tile, true);
02151 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02152
02153 VehicleServiceInDepot(v);
02154 SetWindowClassesDirty(WC_TRAINS_LIST);
02155 v->PlayLeaveStationSound();
02156
02157 v->track = TRACK_BIT_X;
02158 if (v->direction & 2) v->track = TRACK_BIT_Y;
02159
02160 v->vehstatus &= ~VS_HIDDEN;
02161 v->cur_speed = 0;
02162
02163 v->UpdateViewport(true, true);
02164 VehicleUpdatePosition(v);
02165 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02166 v->UpdateAcceleration();
02167 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02168
02169 return false;
02170 }
02171
02178 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02179 {
02180 DiagDirection dir = TrackdirToExitdir(track_dir);
02181
02182 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02183
02184 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02185 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02186
02187 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02188
02189 SetTunnelBridgeReservation(tile, false);
02190 SetTunnelBridgeReservation(end, false);
02191
02192 if (_settings_client.gui.show_track_reservation) {
02193 MarkTileDirtyByTile(tile);
02194 MarkTileDirtyByTile(end);
02195 }
02196 }
02197 }
02198 } else if (IsRailStationTile(tile)) {
02199 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02200
02201
02202 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02203 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02204 }
02205 } else {
02206
02207 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02208 }
02209 }
02210
02217 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02218 {
02219 assert(v->IsFrontEngine());
02220
02221 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02222 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02223 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02224 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02225
02226
02227 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02228 if (v->track == TRACK_BIT_DEPOT) {
02229
02230 for (const Train *u = v; u != NULL; u = u->Next()) {
02231 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02232 }
02233 }
02234
02235 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02236
02237 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02238 while (ft.Follow(tile, td)) {
02239 tile = ft.m_new_tile;
02240 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02241 td = RemoveFirstTrackdir(&bits);
02242 assert(bits == TRACKDIR_BIT_NONE);
02243
02244 if (!IsValidTrackdir(td)) break;
02245
02246 if (IsTileType(tile, MP_RAILWAY)) {
02247 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02248
02249 UnreserveRailTrack(tile, TrackdirToTrack(td));
02250 break;
02251 }
02252 if (HasPbsSignalOnTrackdir(tile, td)) {
02253 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02254
02255 break;
02256 } else {
02257
02258 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02259 MarkTileDirtyByTile(tile);
02260 }
02261 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02262 break;
02263 }
02264 }
02265
02266
02267 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);
02268
02269 free_tile = true;
02270 }
02271 }
02272
02273 static const byte _initial_tile_subcoord[6][4][3] = {
02274 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02275 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02276 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02277 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02278 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02279 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02280 };
02281
02294 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02295 {
02296 switch (_settings_game.pf.pathfinder_for_trains) {
02297 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02298 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02299
02300 default: NOT_REACHED();
02301 }
02302 }
02303
02309 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02310 {
02311 PBSTileInfo origin = FollowTrainReservation(v);
02312
02313 CFollowTrackRail ft(v);
02314
02315 TileIndex tile = origin.tile;
02316 Trackdir cur_td = origin.trackdir;
02317 while (ft.Follow(tile, cur_td)) {
02318 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02319
02320 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02321 }
02322
02323 if (_settings_game.pf.forbid_90_deg) {
02324 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02325 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02326 }
02327
02328
02329 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02330 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02331
02332
02333
02334
02335
02336
02337 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02338
02339
02340
02341 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02342
02343
02344 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02345 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02346 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02347 }
02348
02349 tile = ft.m_new_tile;
02350 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02351
02352 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02353 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02354 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02355
02356 return PBSTileInfo(tile, cur_td, true);
02357 }
02358
02359 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02360 }
02361
02362 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02363
02364 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02365 }
02366
02367
02368 tile = origin.tile;
02369 cur_td = origin.trackdir;
02370 TileIndex stopped = ft.m_old_tile;
02371 Trackdir stopped_td = ft.m_old_td;
02372 while (tile != stopped || cur_td != stopped_td) {
02373 if (!ft.Follow(tile, cur_td)) break;
02374
02375 if (_settings_game.pf.forbid_90_deg) {
02376 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02377 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02378 }
02379 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02380
02381 tile = ft.m_new_tile;
02382 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02383
02384 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02385 }
02386
02387
02388 return PBSTileInfo();
02389 }
02390
02401 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02402 {
02403 switch (_settings_game.pf.pathfinder_for_trains) {
02404 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02405 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02406
02407 default: NOT_REACHED();
02408 }
02409 }
02410
02412 class VehicleOrderSaver {
02413 private:
02414 Train *v;
02415 Order old_order;
02416 TileIndex old_dest_tile;
02417 StationID old_last_station_visited;
02418 VehicleOrderID index;
02419 bool suppress_implicit_orders;
02420
02421 public:
02422 VehicleOrderSaver(Train *_v) :
02423 v(_v),
02424 old_order(_v->current_order),
02425 old_dest_tile(_v->dest_tile),
02426 old_last_station_visited(_v->last_station_visited),
02427 index(_v->cur_real_order_index),
02428 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02429 {
02430 }
02431
02432 ~VehicleOrderSaver()
02433 {
02434 this->v->current_order = this->old_order;
02435 this->v->dest_tile = this->old_dest_tile;
02436 this->v->last_station_visited = this->old_last_station_visited;
02437 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02438 }
02439
02445 bool SwitchToNextOrder(bool skip_first)
02446 {
02447 if (this->v->GetNumOrders() == 0) return false;
02448
02449 if (skip_first) ++this->index;
02450
02451 int depth = 0;
02452
02453 do {
02454
02455 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02456
02457 Order *order = this->v->GetOrder(this->index);
02458 assert(order != NULL);
02459
02460 switch (order->GetType()) {
02461 case OT_GOTO_DEPOT:
02462
02463 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02464 case OT_GOTO_STATION:
02465 case OT_GOTO_WAYPOINT:
02466 this->v->current_order = *order;
02467 return UpdateOrderDest(this->v, order, 0, true);
02468 case OT_CONDITIONAL: {
02469 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02470 if (next != INVALID_VEH_ORDER_ID) {
02471 depth++;
02472 this->index = next;
02473
02474 continue;
02475 }
02476 break;
02477 }
02478 default:
02479 break;
02480 }
02481
02482
02483 ++this->index;
02484 depth++;
02485 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02486
02487 return false;
02488 }
02489 };
02490
02491
02492 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02493 {
02494 Track best_track = INVALID_TRACK;
02495 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02496 bool changed_signal = false;
02497
02498 assert((tracks & ~TRACK_BIT_MASK) == 0);
02499
02500 if (got_reservation != NULL) *got_reservation = false;
02501
02502
02503 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02504
02505 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02506
02507
02508 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02509 Track track = FindFirstTrack(tracks);
02510
02511 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02512 do_track_reservation = true;
02513 changed_signal = true;
02514 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02515 } else if (!do_track_reservation) {
02516 return track;
02517 }
02518 best_track = track;
02519 }
02520
02521 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02522 DiagDirection dest_enterdir = enterdir;
02523 if (do_track_reservation) {
02524 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02525 if (res_dest.tile == INVALID_TILE) {
02526
02527 if (mark_stuck) MarkTrainAsStuck(v);
02528 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02529 return FindFirstTrack(tracks);
02530 }
02531 if (res_dest.okay) {
02532
02533 if (got_reservation != NULL) *got_reservation = true;
02534 if (changed_signal) MarkTileDirtyByTile(tile);
02535 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02536 return best_track;
02537 }
02538
02539
02540
02541
02542 CheckIfTrainNeedsService(v);
02543 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02544 }
02545
02546
02547 VehicleOrderSaver orders(v);
02548
02549
02550
02551
02552
02553
02554
02555 if (v->current_order.IsType(OT_LEAVESTATION)) {
02556 orders.SwitchToNextOrder(false);
02557 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02558 v->current_order.IsType(OT_GOTO_STATION) ?
02559 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02560 v->tile == v->dest_tile))) {
02561 orders.SwitchToNextOrder(true);
02562 }
02563
02564 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02565
02566 bool path_found = true;
02567 TileIndex new_tile = res_dest.tile;
02568
02569 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02570 if (new_tile == tile) best_track = next_track;
02571 v->HandlePathfindingResult(path_found);
02572 }
02573
02574
02575 if (!do_track_reservation) return best_track;
02576
02577
02578 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02579 if (mark_stuck) MarkTrainAsStuck(v);
02580 FreeTrainTrackReservation(v);
02581 return best_track;
02582 }
02583
02584
02585 if (res_dest.tile == INVALID_TILE) {
02586
02587 PBSTileInfo origin = FollowTrainReservation(v);
02588 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02589 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02590 best_track = FindFirstTrack(res);
02591 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02592 if (got_reservation != NULL) *got_reservation = true;
02593 if (changed_signal) MarkTileDirtyByTile(tile);
02594 } else {
02595 FreeTrainTrackReservation(v);
02596 if (mark_stuck) MarkTrainAsStuck(v);
02597 }
02598 return best_track;
02599 }
02600
02601 if (got_reservation != NULL) *got_reservation = true;
02602
02603
02604 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02605
02606 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02607 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02608 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02609 if (_settings_game.pf.forbid_90_deg) {
02610 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02611 }
02612
02613
02614 if (orders.SwitchToNextOrder(true)) {
02615 PBSTileInfo cur_dest;
02616 bool path_found;
02617 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02618 if (cur_dest.tile != INVALID_TILE) {
02619 res_dest = cur_dest;
02620 if (res_dest.okay) continue;
02621
02622 FreeTrainTrackReservation(v);
02623 if (mark_stuck) MarkTrainAsStuck(v);
02624 if (got_reservation != NULL) *got_reservation = false;
02625 changed_signal = false;
02626 break;
02627 }
02628 }
02629
02630 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02631 FreeTrainTrackReservation(v);
02632 if (mark_stuck) MarkTrainAsStuck(v);
02633 if (got_reservation != NULL) *got_reservation = false;
02634 changed_signal = false;
02635 }
02636 break;
02637 }
02638
02639 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02640
02641 if (changed_signal) MarkTileDirtyByTile(tile);
02642
02643 return best_track;
02644 }
02645
02654 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02655 {
02656 assert(v->IsFrontEngine());
02657
02658
02659
02660
02661 if (v->track == TRACK_BIT_DEPOT) {
02662 if (HasDepotReservation(v->tile)) {
02663 if (mark_as_stuck) MarkTrainAsStuck(v);
02664 return false;
02665 } else {
02666
02667 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02668 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02669 }
02670 }
02671
02672 Vehicle *other_train = NULL;
02673 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02674
02675
02676
02677
02678
02679 if (other_train != NULL && other_train->index != v->index) {
02680 if (mark_as_stuck) MarkTrainAsStuck(v);
02681 return false;
02682 }
02683
02684 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02685
02686 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02687 ClrBit(v->flags, VRF_TRAIN_STUCK);
02688 return true;
02689 }
02690
02691
02692 if (v->track == TRACK_BIT_DEPOT) {
02693 SetDepotReservation(v->tile, true);
02694 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02695 }
02696
02697 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02698 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02699 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02700
02701 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02702
02703 bool res_made = false;
02704 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02705
02706 if (!res_made) {
02707
02708 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02709 return false;
02710 }
02711
02712 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02713 v->wait_counter = 0;
02714 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02715 }
02716 ClrBit(v->flags, VRF_TRAIN_STUCK);
02717 return true;
02718 }
02719
02720
02721 static bool CheckReverseTrain(const Train *v)
02722 {
02723 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02724 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02725 !(v->direction & 1)) {
02726 return false;
02727 }
02728
02729 assert(v->track != TRACK_BIT_NONE);
02730
02731 switch (_settings_game.pf.pathfinder_for_trains) {
02732 case VPF_NPF: return NPFTrainCheckReverse(v);
02733 case VPF_YAPF: return YapfTrainCheckReverse(v);
02734
02735 default: NOT_REACHED();
02736 }
02737 }
02738
02744 TileIndex Train::GetOrderStationLocation(StationID station)
02745 {
02746 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02747
02748 const Station *st = Station::Get(station);
02749 if (!(st->facilities & FACIL_TRAIN)) {
02750
02751 this->IncrementRealOrderIndex();
02752 return 0;
02753 }
02754
02755 return st->xy;
02756 }
02757
02759 void Train::MarkDirty()
02760 {
02761 Train *v = this;
02762 do {
02763 v->UpdateViewport(false, false);
02764 } while ((v = v->Next()) != NULL);
02765
02766
02767 this->CargoChanged();
02768 this->UpdateAcceleration();
02769 }
02770
02778 int Train::UpdateSpeed()
02779 {
02780 switch (_settings_game.vehicle.train_acceleration_model) {
02781 default: NOT_REACHED();
02782 case AM_ORIGINAL:
02783 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, min(this->gcache.cached_max_track_speed, this->current_order.max_speed));
02784
02785 case AM_REALISTIC:
02786 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02787 }
02788 }
02789
02795 static void TrainEnterStation(Train *v, StationID station)
02796 {
02797 v->last_station_visited = station;
02798
02799
02800 Station *st = Station::Get(station);
02801 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02802 st->had_vehicle_of_type |= HVOT_TRAIN;
02803 SetDParam(0, st->index);
02804 AddVehicleNewsItem(
02805 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02806 v->owner == _local_company ? NT_ARRIVAL_COMPANY : NT_ARRIVAL_OTHER,
02807 v->index,
02808 st->index
02809 );
02810 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02811 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02812 }
02813
02814 v->force_proceed = TFP_NONE;
02815 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02816
02817 v->BeginLoading();
02818
02819 TriggerStationRandomisation(st, v->tile, SRT_TRAIN_ARRIVES);
02820 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02821 }
02822
02823
02824 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02825 {
02826 return IsTileOwner(tile, v->owner) &&
02827 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02828 }
02829
02831 struct AccelerationSlowdownParams {
02832 byte small_turn;
02833 byte large_turn;
02834 byte z_up;
02835 byte z_down;
02836 };
02837
02839 static const AccelerationSlowdownParams _accel_slowdown[] = {
02840
02841 {256 / 4, 256 / 2, 256 / 4, 2},
02842 {256 / 4, 256 / 2, 256 / 4, 2},
02843 {0, 256 / 2, 256 / 4, 2},
02844 };
02845
02851 static inline void AffectSpeedByZChange(Train *v, int old_z)
02852 {
02853 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02854
02855 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02856
02857 if (old_z < v->z_pos) {
02858 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02859 } else {
02860 uint16 spd = v->cur_speed + asp->z_down;
02861 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02862 }
02863 }
02864
02865 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02866 {
02867 if (IsTileType(tile, MP_RAILWAY) &&
02868 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02869 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02870 Trackdir trackdir = FindFirstTrackdir(tracks);
02871 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02872
02873 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02874 }
02875 }
02876 return false;
02877 }
02878
02880 void Train::ReserveTrackUnderConsist() const
02881 {
02882 for (const Train *u = this; u != NULL; u = u->Next()) {
02883 switch (u->track) {
02884 case TRACK_BIT_WORMHOLE:
02885 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02886 break;
02887 case TRACK_BIT_DEPOT:
02888 break;
02889 default:
02890 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02891 break;
02892 }
02893 }
02894 }
02895
02902 uint Train::Crash(bool flooded)
02903 {
02904 uint pass = 0;
02905 if (this->IsFrontEngine()) {
02906 pass += 2;
02907
02908
02909
02910 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02911 for (const Train *v = this; v != NULL; v = v->Next()) {
02912 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02913 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02914
02915
02916 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02917 }
02918 }
02919
02920
02921
02922 TileIndex crossing = TrainApproachingCrossingTile(this);
02923 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02924
02925
02926 HideFillingPercent(&this->fill_percent_te_id);
02927 }
02928
02929 pass += this->GroundVehicleBase::Crash(flooded);
02930
02931 this->crash_anim_pos = flooded ? 4000 : 1;
02932 return pass;
02933 }
02934
02941 static uint TrainCrashed(Train *v)
02942 {
02943 uint num = 0;
02944
02945
02946 if (!(v->vehstatus & VS_CRASHED)) {
02947 num = v->Crash();
02948 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02949 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02950 }
02951
02952
02953
02954 v->ReserveTrackUnderConsist();
02955
02956 return num;
02957 }
02958
02960 struct TrainCollideChecker {
02961 Train *v;
02962 uint num;
02963 };
02964
02971 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02972 {
02973 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02974
02975
02976 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02977
02978
02979 if (v->owner != tcc->v->owner) return NULL;
02980
02981
02982 Train *coll = Train::From(v)->First();
02983
02984
02985 if (coll == tcc->v) return NULL;
02986
02987 int x_diff = v->x_pos - tcc->v->x_pos;
02988 int y_diff = v->y_pos - tcc->v->y_pos;
02989
02990
02991
02992
02993
02994 uint hash = (y_diff + 7) | (x_diff + 7);
02995 if (hash & ~15) return NULL;
02996
02997
02998 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02999 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
03000
03001
03002 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03003
03004
03005 tcc->num += TrainCrashed(tcc->v);
03006 tcc->num += TrainCrashed(coll);
03007
03008 return NULL;
03009 }
03010
03018 static bool CheckTrainCollision(Train *v)
03019 {
03020
03021 if (v->track == TRACK_BIT_DEPOT) return false;
03022
03023 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03024
03025 TrainCollideChecker tcc;
03026 tcc.v = v;
03027 tcc.num = 0;
03028
03029
03030 if (v->track == TRACK_BIT_WORMHOLE) {
03031 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03032 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03033 } else {
03034 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03035 }
03036
03037
03038 if (tcc.num == 0) return false;
03039
03040 SetDParam(0, tcc.num);
03041 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH, NT_ACCIDENT, v->index);
03042
03043 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03044 if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03045 return true;
03046 }
03047
03048 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03049 {
03050 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03051
03052 Train *t = Train::From(v);
03053 DiagDirection exitdir = *(DiagDirection *)data;
03054
03055
03056 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03057
03058 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03059
03060 return t;
03061 }
03062
03070 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03071 {
03072 Train *first = v->First();
03073 Train *prev;
03074 bool direction_changed = false;
03075
03076
03077 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03078 DiagDirection enterdir = DIAGDIR_BEGIN;
03079 bool update_signals_crossing = false;
03080
03081 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03082 if (v->track != TRACK_BIT_WORMHOLE) {
03083
03084 if (gp.old_tile == gp.new_tile) {
03085
03086 if (v->track == TRACK_BIT_DEPOT) {
03087
03088 gp.x = v->x_pos;
03089 gp.y = v->y_pos;
03090 } else {
03091
03092
03093
03094 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03095
03096 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03097 if (HasBit(r, VETS_CANNOT_ENTER)) {
03098 goto invalid_rail;
03099 }
03100 if (HasBit(r, VETS_ENTERED_STATION)) {
03101
03102 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03103 }
03104 }
03105 } else {
03106
03107
03108
03109 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03110 assert(IsValidDiagDirection(enterdir));
03111
03112
03113
03114 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03115 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03116
03117 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03118 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03119
03120 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03121 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03122
03123
03124 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03125 }
03126
03127 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03128
03129
03130
03131 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03132
03133 TrackBits chosen_track;
03134 if (prev == NULL) {
03135
03136
03137 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03138 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03139
03140 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03141
03142
03143
03144
03145 Trackdir dir = FindFirstTrackdir(trackdirbits);
03146 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03147 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03148
03149
03150 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03151 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03152 }
03153 }
03154
03155
03156 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03157
03158 Trackdir i = FindFirstTrackdir(trackdirbits);
03159
03160
03161 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03162
03163 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03164 v->cur_speed = 0;
03165 v->subspeed = 0;
03166 v->progress = 255 - 100;
03167 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03168 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03169 v->cur_speed = 0;
03170 v->subspeed = 0;
03171 v->progress = 255 - 10;
03172 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03173 DiagDirection exitdir = TrackdirToExitdir(i);
03174 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03175
03176 exitdir = ReverseDiagDir(exitdir);
03177
03178
03179 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03180 }
03181 }
03182
03183
03184
03185
03186
03187 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03188 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03189 v->wait_counter = 0;
03190 return false;
03191 }
03192 goto reverse_train_direction;
03193 } else {
03194 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track), false);
03195 }
03196 } else {
03197
03198 if (prev->tile == gp.new_tile) {
03199
03200 if (prev->track == TRACK_BIT_WORMHOLE) {
03201
03202
03203 assert(IsTunnel(prev->tile));
03204 chosen_track = bits;
03205 } else {
03206 chosen_track = prev->track;
03207 }
03208 } else {
03209
03210
03211
03212
03213
03214
03215
03216 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03217 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03218 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03219 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03220 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03221 };
03222 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03223 assert(IsValidDiagDirection(exitdir));
03224 chosen_track = _connecting_track[enterdir][exitdir];
03225 }
03226 chosen_track &= bits;
03227 }
03228
03229
03230 assert(
03231 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03232 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03233 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03234
03235
03236 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03237 gp.x = (gp.x & ~0xF) | b[0];
03238 gp.y = (gp.y & ~0xF) | b[1];
03239 Direction chosen_dir = (Direction)b[2];
03240
03241
03242 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03243 if (HasBit(r, VETS_CANNOT_ENTER)) {
03244 goto invalid_rail;
03245 }
03246
03247 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03248 Track track = FindFirstTrack(chosen_track);
03249 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03250 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03251 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03252 MarkTileDirtyByTile(gp.new_tile);
03253 }
03254
03255
03256 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03257
03258 v->tile = gp.new_tile;
03259
03260 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03261 v->First()->ConsistChanged(true);
03262 }
03263
03264 v->track = chosen_track;
03265 assert(v->track);
03266 }
03267
03268
03269
03270 update_signals_crossing = true;
03271
03272 if (chosen_dir != v->direction) {
03273 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03274 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03275 DirDiff diff = DirDifference(v->direction, chosen_dir);
03276 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03277 }
03278 direction_changed = true;
03279 v->direction = chosen_dir;
03280 }
03281
03282 if (v->IsFrontEngine()) {
03283 v->wait_counter = 0;
03284
03285
03286 TileIndex crossing = TrainApproachingCrossingTile(v);
03287 if (crossing != INVALID_TILE && HasCrossingReservation(crossing) && _settings_client.sound.new_year) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03288
03289
03290 CheckNextTrainTile(v);
03291 }
03292
03293 if (HasBit(r, VETS_ENTERED_STATION)) {
03294
03295 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03296 }
03297 }
03298 } else {
03299 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03300
03301 if (v->IsFrontEngine()) {
03302 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03303 CheckNextTrainTile(v);
03304 }
03305
03306
03307 if (gp.old_tile == gp.new_tile) {
03308 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03309 }
03310 } else {
03311 v->x_pos = gp.x;
03312 v->y_pos = gp.y;
03313 VehicleUpdatePosition(v);
03314 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03315 continue;
03316 }
03317 }
03318
03319
03320 v->UpdateDeltaXY(v->direction);
03321
03322 v->x_pos = gp.x;
03323 v->y_pos = gp.y;
03324 VehicleUpdatePosition(v);
03325
03326
03327 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03328
03329 if (prev == NULL) {
03330
03331 AffectSpeedByZChange(v, old_z);
03332 }
03333
03334 if (update_signals_crossing) {
03335 if (v->IsFrontEngine()) {
03336 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03337
03338
03339
03340
03341
03342
03343
03344
03345 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03346 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03347 !TryPathReserve(v)) {
03348 MarkTrainAsStuck(v);
03349 }
03350 }
03351 }
03352
03353
03354
03355 if (v->Next() == NULL) {
03356 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03357 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03358 }
03359 }
03360
03361
03362 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03363 }
03364
03365 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03366
03367 return true;
03368
03369 invalid_rail:
03370
03371 if (prev != NULL) error("Disconnecting train");
03372
03373 reverse_train_direction:
03374 if (reverse) {
03375 v->wait_counter = 0;
03376 v->cur_speed = 0;
03377 v->subspeed = 0;
03378 ReverseTrainDirection(v);
03379 }
03380
03381 return false;
03382 }
03383
03390 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03391 {
03392 TrackBits *trackbits = (TrackBits *)data;
03393
03394 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03395 TrackBits train_tbits = Train::From(v)->track;
03396 if (train_tbits == TRACK_BIT_WORMHOLE) {
03397
03398 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03399 } else if (train_tbits != TRACK_BIT_DEPOT) {
03400 *trackbits |= train_tbits;
03401 }
03402 }
03403
03404 return NULL;
03405 }
03406
03414 static void DeleteLastWagon(Train *v)
03415 {
03416 Train *first = v->First();
03417
03418
03419
03420
03421 Train *u = v;
03422 for (; v->Next() != NULL; v = v->Next()) u = v;
03423 u->SetNext(NULL);
03424
03425 if (first != v) {
03426
03427 first->ConsistChanged(false);
03428
03429
03430 if (first->track == TRACK_BIT_DEPOT) {
03431 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03432 }
03433 }
03434
03435
03436 TrackBits trackbits = v->track;
03437 TileIndex tile = v->tile;
03438 Owner owner = v->owner;
03439
03440 delete v;
03441 v = NULL;
03442
03443 if (trackbits == TRACK_BIT_WORMHOLE) {
03444
03445 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03446 }
03447
03448 Track track = TrackBitsToTrack(trackbits);
03449 if (HasReservedTracks(tile, trackbits)) {
03450 UnreserveRailTrack(tile, track);
03451
03452
03453 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03454 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03455
03456
03457 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03458 Track t;
03459 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03460 }
03461
03462
03463 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03464
03465
03466 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03467 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03468 } else {
03469 SetSignalsOnBothDir(tile, track, owner);
03470 }
03471 }
03472
03477 static void ChangeTrainDirRandomly(Train *v)
03478 {
03479 static const DirDiff delta[] = {
03480 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03481 };
03482
03483 do {
03484
03485 if (!(v->vehstatus & VS_HIDDEN)) {
03486 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03487 v->UpdateDeltaXY(v->direction);
03488 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03489
03490
03491
03492 if (v->track != TRACK_BIT_WORMHOLE) {
03493 VehicleUpdatePosition(v);
03494 v->UpdateInclination(false, false);
03495 }
03496 }
03497 } while ((v = v->Next()) != NULL);
03498 }
03499
03505 static bool HandleCrashedTrain(Train *v)
03506 {
03507 int state = ++v->crash_anim_pos;
03508
03509 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03510 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03511 }
03512
03513 uint32 r;
03514 if (state <= 200 && Chance16R(1, 7, r)) {
03515 int index = (r * 10 >> 16);
03516
03517 Vehicle *u = v;
03518 do {
03519 if (--index < 0) {
03520 r = Random();
03521
03522 CreateEffectVehicleRel(u,
03523 GB(r, 8, 3) + 2,
03524 GB(r, 16, 3) + 2,
03525 GB(r, 0, 3) + 5,
03526 EV_EXPLOSION_SMALL);
03527 break;
03528 }
03529 } while ((u = u->Next()) != NULL);
03530 }
03531
03532 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03533
03534 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03535 bool ret = v->Next() != NULL;
03536 DeleteLastWagon(v);
03537 return ret;
03538 }
03539
03540 return true;
03541 }
03542
03544 static const uint16 _breakdown_speeds[16] = {
03545 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03546 };
03547
03548
03557 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03558 {
03559
03560 uint x = v->x_pos & 0xF;
03561 uint y = v->y_pos & 0xF;
03562
03563
03564
03565 switch (v->direction) {
03566 case DIR_N : x = ~x + ~y + 25; break;
03567 case DIR_NW: x = y;
03568 case DIR_NE: x = ~x + 16; break;
03569 case DIR_E : x = ~x + y + 9; break;
03570 case DIR_SE: x = y; break;
03571 case DIR_S : x = x + y - 7; break;
03572 case DIR_W : x = ~y + x + 9; break;
03573 default: break;
03574 }
03575
03576
03577
03578
03579
03580
03581 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03582
03583 v->cur_speed = 0;
03584 if (reverse) ReverseTrainDirection(v);
03585 return false;
03586 }
03587
03588
03589 v->vehstatus |= VS_TRAIN_SLOWING;
03590 uint16 break_speed = _breakdown_speeds[x & 0xF];
03591 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03592
03593 return true;
03594 }
03595
03596
03602 static bool TrainCanLeaveTile(const Train *v)
03603 {
03604
03605 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03606
03607 TileIndex tile = v->tile;
03608
03609
03610 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03611 DiagDirection dir = GetTunnelBridgeDirection(tile);
03612 if (DiagDirToDir(dir) == v->direction) return false;
03613 }
03614
03615
03616 if (IsRailDepotTile(tile)) {
03617 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03618 if (DiagDirToDir(dir) == v->direction) return false;
03619 }
03620
03621 return true;
03622 }
03623
03624
03632 static TileIndex TrainApproachingCrossingTile(const Train *v)
03633 {
03634 assert(v->IsFrontEngine());
03635 assert(!(v->vehstatus & VS_CRASHED));
03636
03637 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03638
03639 DiagDirection dir = TrainExitDir(v->direction, v->track);
03640 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03641
03642
03643 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03644 !CheckCompatibleRail(v, tile)) {
03645 return INVALID_TILE;
03646 }
03647
03648 return tile;
03649 }
03650
03651
03659 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03660 {
03661
03662
03663 int t = v->breakdown_ctr;
03664 if (t > 1) {
03665 v->vehstatus |= VS_TRAIN_SLOWING;
03666
03667 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03668 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03669 } else {
03670 v->vehstatus &= ~VS_TRAIN_SLOWING;
03671 }
03672
03673 if (!TrainCanLeaveTile(v)) return true;
03674
03675
03676 DiagDirection dir = TrainExitDir(v->direction, v->track);
03677
03678 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03679
03680
03681 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03682 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03683
03684 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03685 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03686
03687
03688
03689
03690 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03691 if (_settings_game.pf.forbid_90_deg) {
03692 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03693 }
03694
03695
03696 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03697 return TrainApproachingLineEnd(v, false, reverse);
03698 }
03699
03700
03701 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03702
03703
03704 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03705
03706 return true;
03707 }
03708
03709
03710 static bool TrainLocoHandler(Train *v, bool mode)
03711 {
03712
03713 if (v->vehstatus & VS_CRASHED) {
03714 return mode ? true : HandleCrashedTrain(v);
03715 }
03716
03717 if (v->force_proceed != TFP_NONE) {
03718 ClrBit(v->flags, VRF_TRAIN_STUCK);
03719 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03720 }
03721
03722
03723 if (v->HandleBreakdown()) return true;
03724
03725 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03726 ReverseTrainDirection(v);
03727 }
03728
03729
03730 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03731
03732 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03733 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03734 v->wait_counter = 0;
03735 v->cur_speed = 0;
03736 v->subspeed = 0;
03737 ClrBit(v->flags, VRF_LEAVING_STATION);
03738 ReverseTrainDirection(v);
03739 return true;
03740 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03741
03742
03743
03744 DiagDirection dir = TrainExitDir(v->direction, v->track);
03745 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03746
03747 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03748 TryPathReserve(v, true, true);
03749 }
03750 ClrBit(v->flags, VRF_LEAVING_STATION);
03751 }
03752
03753 v->HandleLoading(mode);
03754
03755 if (v->current_order.IsType(OT_LOADING)) return true;
03756
03757 if (CheckTrainStayInDepot(v)) return true;
03758
03759 if (!mode) v->ShowVisualEffect();
03760
03761
03762 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03763 CheckNextTrainTile(v);
03764 }
03765
03766
03767 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03768 ++v->wait_counter;
03769
03770
03771 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03772
03773 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03774 if (!TryPathReserve(v)) {
03775
03776 if (turn_around) ReverseTrainDirection(v);
03777
03778 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03779
03780 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03781 SetDParam(0, v->index);
03782 AddVehicleAdviceNewsItem(STR_NEWS_TRAIN_IS_STUCK, v->index);
03783 }
03784 v->wait_counter = 0;
03785 }
03786
03787 if (v->force_proceed == TFP_NONE) return true;
03788 ClrBit(v->flags, VRF_TRAIN_STUCK);
03789 v->wait_counter = 0;
03790 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03791 }
03792 }
03793
03794 if (v->current_order.IsType(OT_LEAVESTATION)) {
03795 v->current_order.Free();
03796 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03797 return true;
03798 }
03799
03800 int j = v->UpdateSpeed();
03801
03802
03803 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03804
03805 v->force_proceed = TFP_NONE;
03806 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03807 }
03808
03809 int adv_spd = v->GetAdvanceDistance();
03810 if (j < adv_spd) {
03811
03812 if (v->cur_speed == 0) v->SetLastSpeed();
03813 } else {
03814 TrainCheckIfLineEnds(v);
03815
03816 for (;;) {
03817 j -= adv_spd;
03818 TrainController(v, NULL);
03819
03820 if (CheckTrainCollision(v)) break;
03821
03822 adv_spd = v->GetAdvanceDistance();
03823
03824
03825 if (j < adv_spd || v->cur_speed == 0) break;
03826
03827 OrderType order_type = v->current_order.GetType();
03828
03829 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03830 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03831 IsTileType(v->tile, MP_STATION) &&
03832 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03833 ProcessOrders(v);
03834 }
03835 }
03836 v->SetLastSpeed();
03837 }
03838
03839 for (Train *u = v; u != NULL; u = u->Next()) {
03840 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03841
03842 u->UpdateViewport(false, false);
03843 }
03844
03845 if (v->progress == 0) v->progress = j;
03846
03847 return true;
03848 }
03849
03854 Money Train::GetRunningCost() const
03855 {
03856 Money cost = 0;
03857 const Train *v = this;
03858
03859 do {
03860 const Engine *e = v->GetEngine();
03861 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03862
03863 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03864 if (cost_factor == 0) continue;
03865
03866
03867 if (v->IsMultiheaded()) cost_factor /= 2;
03868
03869 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03870 } while ((v = v->GetNextVehicle()) != NULL);
03871
03872 return cost;
03873 }
03874
03879 bool Train::Tick()
03880 {
03881 this->tick_counter++;
03882
03883 if (this->IsFrontEngine()) {
03884 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03885
03886 this->current_order_time++;
03887
03888 if (!TrainLocoHandler(this, false)) return false;
03889
03890 return TrainLocoHandler(this, true);
03891 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03892
03893 if (++this->crash_anim_pos >= 4400) {
03894 delete this;
03895 return false;
03896 }
03897 }
03898
03899 return true;
03900 }
03901
03906 static void CheckIfTrainNeedsService(Train *v)
03907 {
03908 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03909 if (v->IsChainInDepot()) {
03910 VehicleServiceInDepot(v);
03911 return;
03912 }
03913
03914 uint max_penalty;
03915 switch (_settings_game.pf.pathfinder_for_trains) {
03916 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03917 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03918 default: NOT_REACHED();
03919 }
03920
03921 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03922
03923 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03924 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03925
03926
03927
03928 v->current_order.MakeDummy();
03929 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03930 }
03931 return;
03932 }
03933
03934 DepotID depot = GetDepotIndex(tfdd.tile);
03935
03936 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03937 v->current_order.GetDestination() != depot &&
03938 !Chance16(3, 16)) {
03939 return;
03940 }
03941
03942 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03943 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03944 v->dest_tile = tfdd.tile;
03945 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03946 }
03947
03949 void Train::OnNewDay()
03950 {
03951 AgeVehicle(this);
03952
03953 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03954
03955 if (this->IsFrontEngine()) {
03956 CheckVehicleBreakdown(this);
03957
03958 CheckIfTrainNeedsService(this);
03959
03960 CheckOrders(this);
03961
03962
03963 if (this->current_order.IsType(OT_GOTO_STATION)) {
03964 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03965 if (tile != INVALID_TILE) this->dest_tile = tile;
03966 }
03967
03968 if (this->running_ticks != 0) {
03969
03970 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03971
03972 this->profit_this_year -= cost.GetCost();
03973 this->running_ticks = 0;
03974
03975 SubtractMoneyFromCompanyFract(this->owner, cost);
03976
03977 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03978 SetWindowClassesDirty(WC_TRAINS_LIST);
03979 }
03980 }
03981 }
03982
03987 Trackdir Train::GetVehicleTrackdir() const
03988 {
03989 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03990
03991 if (this->track == TRACK_BIT_DEPOT) {
03992
03993 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03994 }
03995
03996 if (this->track == TRACK_BIT_WORMHOLE) {
03997
03998 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03999 }
04000
04001 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04002 }