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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 #include "newgrf_debug.h"
00038
00039 #include "table/strings.h"
00040 #include "table/train_cmd.h"
00041
00042 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00043 static bool TrainCheckIfLineEnds(Train *v, bool reverse = true);
00044 bool TrainController(Train *v, Vehicle *nomove, bool reverse = true);
00045 static TileIndex TrainApproachingCrossingTile(const Train *v);
00046 static void CheckIfTrainNeedsService(Train *v);
00047 static void CheckNextTrainTile(Train *v);
00048
00049 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00050 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00051
00052 template <>
00053 bool IsValidImageIndex<VEH_TRAIN>(uint8 image_index)
00054 {
00055 return image_index < lengthof(_engine_sprite_base);
00056 }
00057
00065 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00066 {
00067 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00068
00069 DiagDirection diagdir = DirToDiagDir(direction);
00070
00071
00072 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00073 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00074 }
00075
00076 return diagdir;
00077 }
00078
00079
00085 byte FreightWagonMult(CargoID cargo)
00086 {
00087 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00088 return _settings_game.vehicle.freight_trains;
00089 }
00090
00092 void CheckTrainsLengths()
00093 {
00094 const Train *v;
00095 bool first = true;
00096
00097 FOR_ALL_TRAINS(v) {
00098 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00099 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00100 if (u->track != TRACK_BIT_DEPOT) {
00101 if ((w->track != TRACK_BIT_DEPOT &&
00102 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->CalcNextVehicleOffset()) ||
00103 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00104 SetDParam(0, v->index);
00105 SetDParam(1, v->owner);
00106 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00107
00108 if (!_networking && first) {
00109 first = false;
00110 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00111 }
00112
00113 break;
00114 }
00115 }
00116 }
00117 }
00118 }
00119 }
00120
00127 void Train::ConsistChanged(ConsistChangeFlags allowed_changes)
00128 {
00129 uint16 max_speed = UINT16_MAX;
00130
00131 assert(this->IsFrontEngine() || this->IsFreeWagon());
00132
00133 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00134 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00135 this->gcache.cached_total_length = 0;
00136 this->compatible_railtypes = RAILTYPES_NONE;
00137
00138 bool train_can_tilt = true;
00139
00140 for (Train *u = this; u != NULL; u = u->Next()) {
00141 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00142
00143
00144 assert(u->First() == this);
00145
00146
00147 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00148 u->railtype = rvi_u->railtype;
00149
00150 if (u->IsEngine()) first_engine = u->engine_type;
00151
00152
00153 u->tcache.user_def_data = rvi_u->user_def_data;
00154 this->InvalidateNewGRFCache();
00155 u->InvalidateNewGRFCache();
00156 }
00157
00158 for (Train *u = this; u != NULL; u = u->Next()) {
00159
00160 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00161 this->InvalidateNewGRFCache();
00162 u->InvalidateNewGRFCache();
00163 }
00164
00165 for (Train *u = this; u != NULL; u = u->Next()) {
00166 const Engine *e_u = u->GetEngine();
00167 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00168
00169 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00170
00171
00172 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00173
00174
00175 u->colourmap = PAL_NONE;
00176
00177
00178 u->UpdateVisualEffect(true);
00179
00180 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00181 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00182
00183 SetBit(u->flags, VRF_POWEREDWAGON);
00184 } else {
00185 ClrBit(u->flags, VRF_POWEREDWAGON);
00186 }
00187
00188 if (!u->IsArticulatedPart()) {
00189
00190
00191 if (rvi_u->power > 0) {
00192 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00193 }
00194
00195
00196
00197 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00198 u->railtype = RAILTYPE_RAIL;
00199 u->compatible_railtypes |= RAILTYPES_RAIL;
00200 }
00201
00202
00203 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00204 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00205 if (speed != 0) max_speed = min(speed, max_speed);
00206 }
00207 }
00208
00209 uint16 new_cap = e_u->DetermineCapacity(u);
00210 if (allowed_changes & CCF_CAPACITY) {
00211
00212 if (u->cargo_cap > new_cap) u->cargo.Truncate(new_cap);
00213 u->refit_cap = min(new_cap, u->refit_cap);
00214 u->cargo_cap = new_cap;
00215 } else {
00216
00217 if (new_cap != u->cargo_cap) ShowNewGrfVehicleError(u->engine_type, STR_NEWGRF_BROKEN, STR_NEWGRF_BROKEN_CAPACITY, GBUG_VEH_CAPACITY, true);
00218 }
00219 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00220
00221
00222 uint16 veh_len = CALLBACK_FAILED;
00223 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00224
00225 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00226
00227 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00228 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00229 }
00230 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00231
00232 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00233 }
00234 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00235 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00236
00237 if (allowed_changes & CCF_LENGTH) {
00238
00239 u->gcache.cached_veh_length = veh_len;
00240 } else {
00241
00242 if (veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00243 }
00244
00245 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00246 this->InvalidateNewGRFCache();
00247 u->InvalidateNewGRFCache();
00248 }
00249
00250
00251 this->vcache.cached_max_speed = max_speed;
00252 this->tcache.cached_tilt = train_can_tilt;
00253 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00254
00255
00256 this->CargoChanged();
00257
00258 if (this->IsFrontEngine()) {
00259 this->UpdateAcceleration();
00260 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00261 InvalidateWindowData(WC_VEHICLE_REFIT, this->index, VIWD_CONSIST_CHANGED);
00262 InvalidateWindowData(WC_VEHICLE_ORDERS, this->index, VIWD_CONSIST_CHANGED);
00263 InvalidateNewGRFInspectWindow(GSF_TRAINS, this->index);
00264 }
00265 }
00266
00277 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00278 {
00279 const Station *st = Station::Get(station_id);
00280 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00281 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00282
00283
00284
00285 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00286 if (v->gcache.cached_total_length >= *station_length) {
00287
00288 osl = OSL_PLATFORM_FAR_END;
00289 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00290 osl = v->current_order.GetStopLocation();
00291 }
00292
00293
00294 int stop;
00295 switch (osl) {
00296 default: NOT_REACHED();
00297
00298 case OSL_PLATFORM_NEAR_END:
00299 stop = v->gcache.cached_total_length;
00300 break;
00301
00302 case OSL_PLATFORM_MIDDLE:
00303 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00304 break;
00305
00306 case OSL_PLATFORM_FAR_END:
00307 stop = *station_length;
00308 break;
00309 }
00310
00311
00312
00313 return stop - (v->gcache.cached_veh_length + 1) / 2;
00314 }
00315
00316
00321 int Train::GetCurveSpeedLimit() const
00322 {
00323 assert(this->First() == this);
00324
00325 static const int absolute_max_speed = UINT16_MAX;
00326 int max_speed = absolute_max_speed;
00327
00328 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00329
00330 int curvecount[2] = {0, 0};
00331
00332
00333 int numcurve = 0;
00334 int sum = 0;
00335 int pos = 0;
00336 int lastpos = -1;
00337 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00338 Direction this_dir = u->direction;
00339 Direction next_dir = u->Next()->direction;
00340
00341 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00342 if (dirdiff == DIRDIFF_SAME) continue;
00343
00344 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00345 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00346 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00347 if (lastpos != -1) {
00348 numcurve++;
00349 sum += pos - lastpos;
00350 if (pos - lastpos == 1 && max_speed > 88) {
00351 max_speed = 88;
00352 }
00353 }
00354 lastpos = pos;
00355 }
00356
00357
00358 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00359 max_speed = 61;
00360 }
00361 }
00362
00363 if (numcurve > 0 && max_speed > 88) {
00364 if (curvecount[0] == 1 && curvecount[1] == 1) {
00365 max_speed = absolute_max_speed;
00366 } else {
00367 sum /= numcurve;
00368 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00369 }
00370 }
00371
00372 if (max_speed != absolute_max_speed) {
00373
00374 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00375 max_speed += (max_speed / 2) * rti->curve_speed;
00376
00377 if (this->tcache.cached_tilt) {
00378
00379 max_speed += max_speed / 5;
00380 }
00381 }
00382
00383 return max_speed;
00384 }
00385
00390 int Train::GetCurrentMaxSpeed() const
00391 {
00392 int max_speed = _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL ?
00393 this->gcache.cached_max_track_speed :
00394 this->tcache.cached_max_curve_speed;
00395
00396 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && IsRailStationTile(this->tile)) {
00397 StationID sid = GetStationIndex(this->tile);
00398 if (this->current_order.ShouldStopAtStation(this, sid)) {
00399 int station_ahead;
00400 int station_length;
00401 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00402
00403
00404
00405 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00406
00407 if (distance_to_go > 0) {
00408 int st_max_speed = 120;
00409
00410 int delta_v = this->cur_speed / (distance_to_go + 1);
00411 if (max_speed > (this->cur_speed - delta_v)) {
00412 st_max_speed = this->cur_speed - (delta_v / 10);
00413 }
00414
00415 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00416 max_speed = min(max_speed, st_max_speed);
00417 }
00418 }
00419 }
00420
00421 for (const Train *u = this; u != NULL; u = u->Next()) {
00422 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && u->track == TRACK_BIT_DEPOT) {
00423 max_speed = min(max_speed, 61);
00424 break;
00425 }
00426
00427
00428 if (u->track == TRACK_BIT_WORMHOLE && !(u->vehstatus & VS_HIDDEN)) {
00429 max_speed = min(max_speed, GetBridgeSpec(GetBridgeType(u->tile))->speed);
00430 }
00431 }
00432
00433 max_speed = min(max_speed, this->current_order.max_speed);
00434 return min(max_speed, this->gcache.cached_max_track_speed);
00435 }
00436
00438 void Train::UpdateAcceleration()
00439 {
00440 assert(this->IsFrontEngine() || this->IsFreeWagon());
00441
00442 uint power = this->gcache.cached_power;
00443 uint weight = this->gcache.cached_weight;
00444 assert(weight != 0);
00445 this->acceleration = Clamp(power / weight * 4, 1, 255);
00446 }
00447
00453 int Train::GetDisplayImageWidth(Point *offset) const
00454 {
00455 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00456 int vehicle_pitch = 0;
00457
00458 const Engine *e = this->GetEngine();
00459 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00460 reference_width = e->GetGRF()->traininfo_vehicle_width;
00461 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00462 }
00463
00464 if (offset != NULL) {
00465 offset->x = reference_width / 2;
00466 offset->y = vehicle_pitch;
00467 }
00468 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00469 }
00470
00471 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00472 {
00473 assert(IsValidImageIndex<VEH_TRAIN>(spritenum));
00474 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00475 }
00476
00483 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00484 {
00485 uint8 spritenum = this->spritenum;
00486 SpriteID sprite;
00487
00488 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00489
00490 if (is_custom_sprite(spritenum)) {
00491 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00492 if (sprite != 0) return sprite;
00493
00494 spritenum = this->GetEngine()->original_image_index;
00495 }
00496
00497 assert(IsValidImageIndex<VEH_TRAIN>(spritenum));
00498 sprite = GetDefaultTrainSprite(spritenum, direction);
00499
00500 if (this->cargo.StoredCount() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00501
00502 return sprite;
00503 }
00504
00505 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00506 {
00507 const Engine *e = Engine::Get(engine);
00508 Direction dir = rear_head ? DIR_E : DIR_W;
00509 uint8 spritenum = e->u.rail.image_index;
00510
00511 if (is_custom_sprite(spritenum)) {
00512 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00513 if (sprite != 0) {
00514 if (e->GetGRF() != NULL) {
00515 y += e->GetGRF()->traininfo_vehicle_pitch;
00516 }
00517 return sprite;
00518 }
00519
00520 spritenum = Engine::Get(engine)->original_image_index;
00521 }
00522
00523 if (rear_head) spritenum++;
00524
00525 return GetDefaultTrainSprite(spritenum, DIR_W);
00526 }
00527
00528 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00529 {
00530 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00531 int yf = y;
00532 int yr = y;
00533
00534 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00535 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00536 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00537 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00538
00539 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);
00540
00541 DrawSprite(spritef, pal, preferred_x - 14, yf);
00542 DrawSprite(spriter, pal, preferred_x + 15, yr);
00543 } else {
00544 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00545 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00546 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));
00547 DrawSprite(sprite, pal, preferred_x, y);
00548 }
00549 }
00550
00560 void GetTrainSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
00561 {
00562 int y = 0;
00563
00564 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00565 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00566
00567 width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
00568 height = UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI);
00569 xoffs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
00570 yoffs = UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI);
00571
00572 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00573 sprite = GetRailIcon(engine, true, y, image_type);
00574 real_sprite = GetSprite(sprite, ST_NORMAL);
00575
00576
00577 width = TRAININFO_DEFAULT_VEHICLE_WIDTH + UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) + UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI) - xoffs;
00578 height = max<uint>(height, UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI));
00579 xoffs = xoffs - TRAININFO_DEFAULT_VEHICLE_WIDTH / 2;
00580 yoffs = min(yoffs, UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI));
00581 }
00582 }
00583
00592 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00593 {
00594 const RailVehicleInfo *rvi = &e->u.rail;
00595
00596
00597 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00598
00599 if (flags & DC_EXEC) {
00600 Train *v = new Train();
00601 *ret = v;
00602 v->spritenum = rvi->image_index;
00603
00604 v->engine_type = e->index;
00605 v->gcache.first_engine = INVALID_ENGINE;
00606
00607 DiagDirection dir = GetRailDepotDirection(tile);
00608
00609 v->direction = DiagDirToDir(dir);
00610 v->tile = tile;
00611
00612 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00613 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00614
00615 v->x_pos = x;
00616 v->y_pos = y;
00617 v->z_pos = GetSlopePixelZ(x, y);
00618 v->owner = _current_company;
00619 v->track = TRACK_BIT_DEPOT;
00620 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00621
00622 v->SetWagon();
00623
00624 v->SetFreeWagon();
00625 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00626
00627 v->cargo_type = e->GetDefaultCargoType();
00628 v->cargo_cap = rvi->capacity;
00629 v->refit_cap = 0;
00630
00631 v->railtype = rvi->railtype;
00632
00633 v->build_year = _cur_year;
00634 v->cur_image = SPR_IMG_QUERY;
00635 v->random_bits = VehicleRandomBits();
00636
00637 v->group_id = DEFAULT_GROUP;
00638
00639 AddArticulatedParts(v);
00640
00641 _new_vehicle_id = v->index;
00642
00643 VehicleUpdatePosition(v);
00644 v->First()->ConsistChanged(CCF_ARRANGE);
00645 UpdateTrainGroupID(v->First());
00646
00647 CheckConsistencyOfArticulatedVehicle(v);
00648
00649
00650 Train *w;
00651 FOR_ALL_TRAINS(w) {
00652 if (w->tile == tile &&
00653 w->IsFreeWagon() &&
00654 w->engine_type == e->index &&
00655 w->First() != v &&
00656 !(w->vehstatus & VS_CRASHED)) {
00657 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00658 break;
00659 }
00660 }
00661 }
00662
00663 return CommandCost();
00664 }
00665
00667 static void NormalizeTrainVehInDepot(const Train *u)
00668 {
00669 const Train *v;
00670 FOR_ALL_TRAINS(v) {
00671 if (v->IsFreeWagon() && v->tile == u->tile &&
00672 v->track == TRACK_BIT_DEPOT) {
00673 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00674 CMD_MOVE_RAIL_VEHICLE).Failed())
00675 break;
00676 }
00677 }
00678 }
00679
00680 static void AddRearEngineToMultiheadedTrain(Train *v)
00681 {
00682 Train *u = new Train();
00683 v->value >>= 1;
00684 u->value = v->value;
00685 u->direction = v->direction;
00686 u->owner = v->owner;
00687 u->tile = v->tile;
00688 u->x_pos = v->x_pos;
00689 u->y_pos = v->y_pos;
00690 u->z_pos = v->z_pos;
00691 u->track = TRACK_BIT_DEPOT;
00692 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00693 u->spritenum = v->spritenum + 1;
00694 u->cargo_type = v->cargo_type;
00695 u->cargo_subtype = v->cargo_subtype;
00696 u->cargo_cap = v->cargo_cap;
00697 u->refit_cap = v->refit_cap;
00698 u->railtype = v->railtype;
00699 u->engine_type = v->engine_type;
00700 u->build_year = v->build_year;
00701 u->cur_image = SPR_IMG_QUERY;
00702 u->random_bits = VehicleRandomBits();
00703 v->SetMultiheaded();
00704 u->SetMultiheaded();
00705 v->SetNext(u);
00706 VehicleUpdatePosition(u);
00707
00708
00709 v->other_multiheaded_part = u;
00710 u->other_multiheaded_part = v;
00711 }
00712
00722 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00723 {
00724 const RailVehicleInfo *rvi = &e->u.rail;
00725
00726 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00727
00728
00729
00730 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00731
00732 if (flags & DC_EXEC) {
00733 DiagDirection dir = GetRailDepotDirection(tile);
00734 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00735 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00736
00737 Train *v = new Train();
00738 *ret = v;
00739 v->direction = DiagDirToDir(dir);
00740 v->tile = tile;
00741 v->owner = _current_company;
00742 v->x_pos = x;
00743 v->y_pos = y;
00744 v->z_pos = GetSlopePixelZ(x, y);
00745 v->track = TRACK_BIT_DEPOT;
00746 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00747 v->spritenum = rvi->image_index;
00748 v->cargo_type = e->GetDefaultCargoType();
00749 v->cargo_cap = rvi->capacity;
00750 v->refit_cap = 0;
00751 v->last_station_visited = INVALID_STATION;
00752 v->last_loading_station = INVALID_STATION;
00753
00754 v->engine_type = e->index;
00755 v->gcache.first_engine = INVALID_ENGINE;
00756
00757 v->reliability = e->reliability;
00758 v->reliability_spd_dec = e->reliability_spd_dec;
00759 v->max_age = e->GetLifeLengthInDays();
00760
00761 v->railtype = rvi->railtype;
00762 _new_vehicle_id = v->index;
00763
00764 v->SetServiceInterval(Company::Get(_current_company)->settings.vehicle.servint_trains);
00765 v->date_of_last_service = _date;
00766 v->build_year = _cur_year;
00767 v->cur_image = SPR_IMG_QUERY;
00768 v->random_bits = VehicleRandomBits();
00769
00770 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00771 v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);
00772
00773 v->group_id = DEFAULT_GROUP;
00774
00775 v->SetFrontEngine();
00776 v->SetEngine();
00777
00778 VehicleUpdatePosition(v);
00779
00780 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00781 AddRearEngineToMultiheadedTrain(v);
00782 } else {
00783 AddArticulatedParts(v);
00784 }
00785
00786 v->ConsistChanged(CCF_ARRANGE);
00787 UpdateTrainGroupID(v);
00788
00789 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00790 NormalizeTrainVehInDepot(v);
00791 }
00792
00793 CheckConsistencyOfArticulatedVehicle(v);
00794 }
00795
00796 return CommandCost();
00797 }
00798
00799 static Train *FindGoodVehiclePos(const Train *src)
00800 {
00801 EngineID eng = src->engine_type;
00802 TileIndex tile = src->tile;
00803
00804 Train *dst;
00805 FOR_ALL_TRAINS(dst) {
00806 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00807
00808 Train *t = dst;
00809 while (t->engine_type == eng) {
00810 t = t->Next();
00811 if (t == NULL) return dst;
00812 }
00813 }
00814 }
00815
00816 return NULL;
00817 }
00818
00820 typedef SmallVector<Train *, 16> TrainList;
00821
00827 static void MakeTrainBackup(TrainList &list, Train *t)
00828 {
00829 for (; t != NULL; t = t->Next()) *list.Append() = t;
00830 }
00831
00836 static void RestoreTrainBackup(TrainList &list)
00837 {
00838
00839 if (list.Length() == 0) return;
00840
00841 Train *prev = NULL;
00842
00843 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00844 Train *t = *iter;
00845 if (prev != NULL) {
00846 prev->SetNext(t);
00847 } else if (t->Previous() != NULL) {
00848
00849 t->Previous()->SetNext(NULL);
00850 }
00851 prev = t;
00852 }
00853 }
00854
00860 static void RemoveFromConsist(Train *part, bool chain = false)
00861 {
00862 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00863
00864
00865
00866 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00867
00868
00869 tail->SetNext(NULL);
00870 }
00871
00877 static void InsertInConsist(Train *dst, Train *chain)
00878 {
00879
00880 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00881
00882 chain->Last()->SetNext(dst->Next());
00883 dst->SetNext(chain);
00884 }
00885
00891 static void NormaliseDualHeads(Train *t)
00892 {
00893 for (; t != NULL; t = t->GetNextVehicle()) {
00894 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00895
00896
00897 Train *u;
00898 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00899
00900 if (u == t->other_multiheaded_part) continue;
00901
00902
00903 RemoveFromConsist(t->other_multiheaded_part);
00904
00905 InsertInConsist(u, t->other_multiheaded_part);
00906 }
00907 }
00908
00913 static void NormaliseSubtypes(Train *chain)
00914 {
00915
00916 if (chain == NULL) return;
00917
00918
00919 assert(chain->Previous() == NULL);
00920
00921
00922 if (chain->IsWagon()) {
00923 chain->SetFreeWagon();
00924 } else {
00925 assert(chain->IsEngine());
00926 chain->SetFrontEngine();
00927 }
00928
00929
00930 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00931 t->ClearFreeWagon();
00932 t->ClearFrontEngine();
00933 }
00934 }
00935
00945 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00946 {
00947
00948
00949
00950 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00951 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00952 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00953 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00954 return CommandCost();
00955 }
00956
00957
00958
00959 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00960
00961 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00962 }
00963
00969 static CommandCost CheckTrainAttachment(Train *t)
00970 {
00971
00972 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00973
00974
00975
00976 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00977
00978 Train *head = t;
00979 Train *prev = t;
00980
00981
00982 t = t->Next();
00983 prev->SetNext(NULL);
00984
00985
00986 head->InvalidateNewGRFCache();
00987
00988 while (t != NULL) {
00989 allowed_len -= t->gcache.cached_veh_length;
00990
00991 Train *next = t->Next();
00992
00993
00994
00995 t->SetNext(NULL);
00996
00997
00998 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00999
01000 EngineID first_engine = t->gcache.first_engine;
01001 t->gcache.first_engine = INVALID_ENGINE;
01002
01003
01004
01005 t->InvalidateNewGRFCache();
01006
01007 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
01008
01009
01010 t->gcache.first_engine = first_engine;
01011
01012
01013 t->InvalidateNewGRFCache();
01014 head->InvalidateNewGRFCache();
01015
01016 if (callback != CALLBACK_FAILED) {
01017
01018 StringID error = STR_NULL;
01019
01020 if (head->GetGRF()->grf_version < 8) {
01021 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01022 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01023 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
01024 } else {
01025 if (callback < 0x400) {
01026 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01027 } else {
01028 switch (callback) {
01029 case 0x400:
01030 case 0x401:
01031 break;
01032
01033 default:
01034 case 0x402:
01035 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01036 break;
01037 }
01038 }
01039 }
01040
01041 if (error != STR_NULL) return_cmd_error(error);
01042 }
01043 }
01044
01045
01046 prev->SetNext(t);
01047 prev = t;
01048 t = next;
01049 }
01050
01051 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01052 return CommandCost();
01053 }
01054
01065 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01066 {
01067
01068 CommandCost ret = CheckTrainAttachment(src);
01069 if (ret.Failed()) return ret;
01070 ret = CheckTrainAttachment(dst);
01071 if (ret.Failed()) return ret;
01072
01073
01074 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01075 }
01076
01085 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01086 {
01087
01088 if (*src_head == *dst_head) {
01089
01090
01091 *dst_head = NULL;
01092 } else if (*dst_head == NULL) {
01093
01094
01095 *dst_head = src;
01096 }
01097
01098 if (src == *src_head) {
01099
01100
01101
01102
01103
01104
01105 *src_head = move_chain ? NULL :
01106 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01107 }
01108
01109
01110
01111
01112 RemoveFromConsist(src, move_chain);
01113 if (*dst_head != src) InsertInConsist(dst, src);
01114
01115
01116
01117 NormaliseDualHeads(*src_head);
01118 NormaliseDualHeads(*dst_head);
01119 }
01120
01126 static void NormaliseTrainHead(Train *head)
01127 {
01128
01129 if (head == NULL) return;
01130
01131
01132 head->ConsistChanged(CCF_ARRANGE);
01133 UpdateTrainGroupID(head);
01134
01135
01136 if (!head->IsFrontEngine()) return;
01137
01138
01139 InvalidateWindowData(WC_VEHICLE_REFIT, head->index, VIWD_CONSIST_CHANGED);
01140 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01141
01142
01143 if (head->unitnumber != 0) return;
01144 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01145 }
01146
01159 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01160 {
01161 VehicleID s = GB(p1, 0, 20);
01162 VehicleID d = GB(p2, 0, 20);
01163 bool move_chain = HasBit(p1, 20);
01164
01165 Train *src = Train::GetIfValid(s);
01166 if (src == NULL) return CMD_ERROR;
01167
01168 CommandCost ret = CheckOwnership(src->owner);
01169 if (ret.Failed()) return ret;
01170
01171
01172 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01173
01174
01175 Train *dst;
01176 if (d == INVALID_VEHICLE) {
01177 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01178 } else {
01179 dst = Train::GetIfValid(d);
01180 if (dst == NULL) return CMD_ERROR;
01181
01182 CommandCost ret = CheckOwnership(dst->owner);
01183 if (ret.Failed()) return ret;
01184
01185
01186 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01187 }
01188
01189
01190 src = src->GetFirstEnginePart();
01191 if (dst != NULL) {
01192 dst = dst->GetFirstEnginePart();
01193 }
01194
01195
01196 if (src == dst) return CommandCost();
01197
01198
01199 Train *src_head = src->First();
01200 Train *dst_head;
01201 if (dst != NULL) {
01202 dst_head = dst->First();
01203 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01204
01205 dst = dst->GetLastEnginePart();
01206 } else {
01207 dst_head = NULL;
01208 }
01209
01210 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01211
01212
01213 if (move_chain && src_head == dst_head) return CommandCost();
01214
01215
01216 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01217
01218
01219 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01220
01221
01222 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01223
01224
01225
01226 TrainList original_src;
01227 TrainList original_dst;
01228
01229 MakeTrainBackup(original_src, src_head);
01230 MakeTrainBackup(original_dst, dst_head);
01231
01232
01233
01234
01235 Train *original_src_head = src_head;
01236 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01237
01238
01239
01240
01241 bool original_src_head_front_engine = original_src_head->IsFrontEngine();
01242 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01243
01244
01245 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01246
01247 if ((flags & DC_AUTOREPLACE) == 0) {
01248
01249
01250
01251 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01252 if (ret.Failed()) {
01253
01254 RestoreTrainBackup(original_src);
01255 RestoreTrainBackup(original_dst);
01256 return ret;
01257 }
01258 }
01259
01260
01261 if (flags & DC_EXEC) {
01262
01263 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01264 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01265
01266
01267 NormaliseSubtypes(src_head);
01268 NormaliseSubtypes(dst_head);
01269
01270
01271
01272
01273
01274
01275
01276
01277
01278
01279
01280
01281
01282
01283
01284
01285
01286
01287
01288
01289
01290 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01291
01292 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01293 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01294 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01295 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01296 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01297 DeleteNewGRFInspectWindow(GSF_TRAINS, src->index);
01298 SetWindowDirty(WC_COMPANY, _current_company);
01299
01300
01301
01302 DeleteVehicleOrders(src);
01303 RemoveVehicleFromGroup(src);
01304 src->unitnumber = 0;
01305 }
01306
01307
01308
01309 if (original_src_head != src && dst_head == src) {
01310 SetTrainGroupID(src, DEFAULT_GROUP);
01311 SetWindowDirty(WC_COMPANY, _current_company);
01312 }
01313
01314
01315 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01316 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01317
01318
01319 NormaliseTrainHead(src_head);
01320 NormaliseTrainHead(dst_head);
01321
01322 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01323 CheckCargoCapacity(src_head);
01324 CheckCargoCapacity(dst_head);
01325 }
01326
01327 if (src_head != NULL) src_head->First()->MarkDirty();
01328 if (dst_head != NULL) dst_head->First()->MarkDirty();
01329
01330
01331 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01332 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01333 } else {
01334
01335 RestoreTrainBackup(original_src);
01336 RestoreTrainBackup(original_dst);
01337 }
01338
01339 return CommandCost();
01340 }
01341
01353 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01354 {
01355
01356 bool sell_chain = HasBit(data, 0);
01357
01358 Train *v = Train::From(t)->GetFirstEnginePart();
01359 Train *first = v->First();
01360
01361 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01362
01363
01364
01365 TrainList original;
01366 MakeTrainBackup(original, first);
01367
01368
01369 Train *new_head = first;
01370 Train *sell_head = NULL;
01371
01372
01373 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01374
01375
01376 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01377 if (ret.Failed()) {
01378
01379 RestoreTrainBackup(original);
01380 return ret;
01381 }
01382
01383 CommandCost cost(EXPENSES_NEW_VEHICLES);
01384 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01385
01386 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01387 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01388 }
01389
01390
01391 if (flags & DC_EXEC) {
01392
01393 NormaliseSubtypes(new_head);
01394
01395 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01396
01397
01398 new_head->orders.list = first->orders.list;
01399 new_head->AddToShared(first);
01400 DeleteVehicleOrders(first);
01401
01402
01403 new_head->CopyVehicleConfigAndStatistics(first);
01404 GroupStatistics::CountVehicle(new_head, 1);
01405 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01406 OrderBackup::Backup(v, user);
01407 }
01408
01409
01410 NormaliseTrainHead(new_head);
01411
01412
01413 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01414 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01415
01416
01417 delete sell_head;
01418 } else {
01419
01420 RestoreTrainBackup(original);
01421 }
01422
01423 return cost;
01424 }
01425
01426 void Train::UpdateDeltaXY(Direction direction)
01427 {
01428
01429 this->x_offs = -1;
01430 this->y_offs = -1;
01431 this->x_extent = 3;
01432 this->y_extent = 3;
01433 this->z_extent = 6;
01434 this->x_bb_offs = 0;
01435 this->y_bb_offs = 0;
01436
01437 if (!IsDiagonalDirection(direction)) {
01438 static const int _sign_table[] =
01439 {
01440
01441 -1, -1,
01442 -1, 1,
01443 1, 1,
01444 1, -1,
01445 };
01446
01447 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01448
01449
01450 this->x_offs -= half_shorten * _sign_table[direction];
01451 this->y_offs -= half_shorten * _sign_table[direction + 1];
01452 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01453 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01454 } else {
01455 switch (direction) {
01456
01457
01458 case DIR_NE:
01459 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01460 this->x_extent = this->gcache.cached_veh_length - 1;
01461 this->x_bb_offs = -1;
01462 break;
01463
01464 case DIR_NW:
01465 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01466 this->y_extent = this->gcache.cached_veh_length - 1;
01467 this->y_bb_offs = -1;
01468 break;
01469
01470
01471
01472 case DIR_SW:
01473 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01474 this->x_extent = VEHICLE_LENGTH - 1;
01475 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01476 break;
01477
01478 case DIR_SE:
01479 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01480 this->y_extent = VEHICLE_LENGTH - 1;
01481 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01482 break;
01483
01484 default:
01485 NOT_REACHED();
01486 }
01487 }
01488 }
01489
01494 static void MarkTrainAsStuck(Train *v)
01495 {
01496 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01497
01498 SetBit(v->flags, VRF_TRAIN_STUCK);
01499
01500 v->wait_counter = 0;
01501
01502
01503 v->cur_speed = 0;
01504 v->subspeed = 0;
01505 v->SetLastSpeed();
01506
01507 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01508 }
01509 }
01510
01518 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01519 {
01520 uint16 flag1 = *swap_flag1;
01521 uint16 flag2 = *swap_flag2;
01522
01523
01524 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01525 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01526 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01527 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01528
01529
01530 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01531 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01532 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01533 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01534 }
01535 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01536 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01537 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01538 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01539 }
01540 }
01541
01546 static void UpdateStatusAfterSwap(Train *v)
01547 {
01548
01549 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01550
01551
01552 if (v->track != TRACK_BIT_WORMHOLE) {
01553 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01554 } else {
01555
01556
01557
01558
01559 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01560 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01561 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01562 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01563
01564
01565
01566 VehicleUpdatePosition(v);
01567 v->UpdateInclination(true, true);
01568 return;
01569 }
01570 }
01571 }
01572
01573 VehicleUpdatePosition(v);
01574 v->UpdateViewport(true, true);
01575 }
01576
01583 void ReverseTrainSwapVeh(Train *v, int l, int r)
01584 {
01585 Train *a, *b;
01586
01587
01588 for (a = v; l != 0; l--) a = a->Next();
01589 for (b = v; r != 0; r--) b = b->Next();
01590
01591 if (a != b) {
01592
01593 {
01594 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01595 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01596 a->vehstatus = tmp;
01597 }
01598
01599 Swap(a->track, b->track);
01600 Swap(a->direction, b->direction);
01601 Swap(a->x_pos, b->x_pos);
01602 Swap(a->y_pos, b->y_pos);
01603 Swap(a->tile, b->tile);
01604 Swap(a->z_pos, b->z_pos);
01605
01606 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01607
01608 UpdateStatusAfterSwap(a);
01609 UpdateStatusAfterSwap(b);
01610 } else {
01611
01612
01613
01614 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01615 UpdateStatusAfterSwap(a);
01616 }
01617 }
01618
01619
01625 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01626 {
01627 return (v->type == VEH_TRAIN) ? v : NULL;
01628 }
01629
01630
01637 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01638 {
01639 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01640
01641 Train *t = Train::From(v);
01642 if (!t->IsFrontEngine()) return NULL;
01643
01644 TileIndex tile = *(TileIndex *)data;
01645
01646 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01647
01648 return t;
01649 }
01650
01651
01658 static bool TrainApproachingCrossing(TileIndex tile)
01659 {
01660 assert(IsLevelCrossingTile(tile));
01661
01662 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01663 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01664
01665 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01666
01667 dir = ReverseDiagDir(dir);
01668 tile_from = tile + TileOffsByDiagDir(dir);
01669
01670 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01671 }
01672
01673
01680 void UpdateLevelCrossing(TileIndex tile, bool sound)
01681 {
01682 assert(IsLevelCrossingTile(tile));
01683
01684
01685 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01686
01687 if (new_state != IsCrossingBarred(tile)) {
01688 if (new_state && sound) {
01689 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01690 }
01691 SetCrossingBarred(tile, new_state);
01692 MarkTileDirtyByTile(tile);
01693 }
01694 }
01695
01696
01702 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01703 {
01704 if (!IsCrossingBarred(tile)) {
01705 BarCrossing(tile);
01706 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01707 MarkTileDirtyByTile(tile);
01708 }
01709 }
01710
01711
01717 static void AdvanceWagonsBeforeSwap(Train *v)
01718 {
01719 Train *base = v;
01720 Train *first = base;
01721 Train *last = v->Last();
01722 uint length = CountVehiclesInChain(v);
01723
01724 while (length > 2) {
01725 last = last->Previous();
01726 first = first->Next();
01727
01728 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01729
01730
01731
01732 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01733
01734 base = first;
01735 length -= 2;
01736 }
01737 }
01738
01739
01745 static void AdvanceWagonsAfterSwap(Train *v)
01746 {
01747
01748 Train *dep = v;
01749 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01750 dep = dep->Next();
01751 }
01752
01753 Train *leave = dep->Next();
01754
01755 if (leave != NULL) {
01756
01757 int d = TicksToLeaveDepot(dep);
01758
01759 if (d <= 0) {
01760 leave->vehstatus &= ~VS_HIDDEN;
01761 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01762 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01763 }
01764 } else {
01765 dep = NULL;
01766 }
01767
01768 Train *base = v;
01769 Train *first = base;
01770 Train *last = v->Last();
01771 uint length = CountVehiclesInChain(v);
01772
01773
01774
01775 bool nomove = (dep == NULL);
01776
01777 while (length > 2) {
01778
01779
01780 if (base == dep) break;
01781
01782
01783 if (last == dep) nomove = true;
01784
01785 last = last->Previous();
01786 first = first->Next();
01787
01788 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01789
01790
01791 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01792
01793 base = first;
01794 length -= 2;
01795 }
01796 }
01797
01802 void ReverseTrainDirection(Train *v)
01803 {
01804 if (IsRailDepotTile(v->tile)) {
01805 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01806 }
01807
01808
01809 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01810
01811
01812 TileIndex crossing = TrainApproachingCrossingTile(v);
01813
01814
01815 int r = CountVehiclesInChain(v) - 1;
01816
01817 AdvanceWagonsBeforeSwap(v);
01818
01819
01820 int l = 0;
01821 do {
01822 ReverseTrainSwapVeh(v, l++, r--);
01823 } while (l <= r);
01824
01825 AdvanceWagonsAfterSwap(v);
01826
01827 if (IsRailDepotTile(v->tile)) {
01828 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01829 }
01830
01831 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01832
01833 ClrBit(v->flags, VRF_REVERSING);
01834
01835
01836 v->ConsistChanged(CCF_TRACK);
01837
01838
01839 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01840
01841
01842 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01843
01844
01845 crossing = TrainApproachingCrossingTile(v);
01846 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01847
01848
01849 if (v->track == TRACK_BIT_DEPOT) {
01850
01851 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01852 ClrBit(v->flags, VRF_TRAIN_STUCK);
01853 return;
01854 }
01855
01856
01857
01858 DiagDirection dir = TrainExitDir(v->direction, v->track);
01859 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01860
01861 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01862
01863
01864 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01865 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01866 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01867
01868
01869 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01870
01871 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01872 if (TryPathReserve(v, false, first_tile_okay)) {
01873
01874 CheckNextTrainTile(v);
01875 } else if (v->current_order.GetType() != OT_LOADING) {
01876
01877 MarkTrainAsStuck(v);
01878 }
01879 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01880
01881 ClrBit(v->flags, VRF_TRAIN_STUCK);
01882 v->wait_counter = 0;
01883 }
01884 }
01885
01895 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01896 {
01897 Train *v = Train::GetIfValid(p1);
01898 if (v == NULL) return CMD_ERROR;
01899
01900 CommandCost ret = CheckOwnership(v->owner);
01901 if (ret.Failed()) return ret;
01902
01903 if (p2 != 0) {
01904
01905
01906 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01907 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01908 }
01909 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01910
01911 Train *front = v->First();
01912
01913 if (!front->IsStoppedInDepot()) {
01914 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01915 }
01916
01917 if (flags & DC_EXEC) {
01918 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01919
01920 front->ConsistChanged(CCF_ARRANGE);
01921 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01922 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01923 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01924 SetWindowClassesDirty(WC_TRAINS_LIST);
01925 }
01926 } else {
01927
01928 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01929
01930 if (flags & DC_EXEC) {
01931
01932 if (v->current_order.IsType(OT_LOADING)) {
01933 const Vehicle *last = v;
01934 while (last->Next() != NULL) last = last->Next();
01935
01936
01937 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01938 v->LeaveStation();
01939 }
01940 }
01941
01942
01943 v->force_proceed = TFP_NONE;
01944 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01945
01946 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01947 ToggleBit(v->flags, VRF_REVERSING);
01948 } else {
01949 v->cur_speed = 0;
01950 v->SetLastSpeed();
01951 HideFillingPercent(&v->fill_percent_te_id);
01952 ReverseTrainDirection(v);
01953 }
01954 }
01955 }
01956 return CommandCost();
01957 }
01958
01968 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01969 {
01970 Train *t = Train::GetIfValid(p1);
01971 if (t == NULL) return CMD_ERROR;
01972
01973 if (!t->IsPrimaryVehicle()) return CMD_ERROR;
01974
01975 CommandCost ret = CheckOwnership(t->owner);
01976 if (ret.Failed()) return ret;
01977
01978
01979 if (flags & DC_EXEC) {
01980
01981
01982
01983
01984
01985 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsChainInDepot() ? TFP_STUCK : TFP_SIGNAL;
01986 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01987 }
01988
01989 return CommandCost();
01990 }
01991
01999 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
02000 {
02001 assert(!(v->vehstatus & VS_CRASHED));
02002
02003 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
02004
02005 PBSTileInfo origin = FollowTrainReservation(v);
02006 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
02007
02008 switch (_settings_game.pf.pathfinder_for_trains) {
02009 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
02010 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
02011
02012 default: NOT_REACHED();
02013 }
02014 }
02015
02023 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02024 {
02025 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02026 if (tfdd.best_length == UINT_MAX) return false;
02027
02028 if (location != NULL) *location = tfdd.tile;
02029 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02030 if (reverse != NULL) *reverse = tfdd.reverse;
02031
02032 return true;
02033 }
02034
02036 void Train::PlayLeaveStationSound() const
02037 {
02038 static const SoundFx sfx[] = {
02039 SND_04_TRAIN,
02040 SND_0A_TRAIN_HORN,
02041 SND_0A_TRAIN_HORN,
02042 SND_47_MAGLEV_2,
02043 SND_41_MAGLEV
02044 };
02045
02046 if (PlayVehicleSound(this, VSE_START)) return;
02047
02048 EngineID engtype = this->engine_type;
02049 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02050 }
02051
02056 static void CheckNextTrainTile(Train *v)
02057 {
02058
02059 if (_settings_game.pf.path_backoff_interval == 255) return;
02060
02061
02062 if (v->track == TRACK_BIT_DEPOT) return;
02063
02064 switch (v->current_order.GetType()) {
02065
02066 case OT_GOTO_DEPOT:
02067 if (v->tile == v->dest_tile) return;
02068 break;
02069
02070 case OT_GOTO_WAYPOINT:
02071
02072 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02073 break;
02074
02075 case OT_NOTHING:
02076 case OT_LEAVESTATION:
02077 case OT_LOADING:
02078
02079 if (v->GetNumOrders() > 0) return;
02080 break;
02081
02082 default:
02083 break;
02084 }
02085
02086 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02087
02088 Trackdir td = v->GetVehicleTrackdir();
02089
02090
02091 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02092 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02093 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02094
02095 CFollowTrackRail ft(v);
02096 if (!ft.Follow(v->tile, td)) return;
02097
02098 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02099
02100 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02101 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02102
02103 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02104 if (_settings_game.pf.forbid_90_deg) {
02105 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02106 }
02107 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02108 }
02109 }
02110 }
02111 }
02112
02118 static bool CheckTrainStayInDepot(Train *v)
02119 {
02120
02121 for (const Train *u = v; u != NULL; u = u->Next()) {
02122 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02123 }
02124
02125
02126 if (v->gcache.cached_power == 0) {
02127 v->vehstatus |= VS_STOPPED;
02128 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02129 return true;
02130 }
02131
02132 SigSegState seg_state;
02133
02134 if (v->force_proceed == TFP_NONE) {
02135
02136 if (++v->wait_counter < 37) {
02137 SetWindowClassesDirty(WC_TRAINS_LIST);
02138 return true;
02139 }
02140
02141 v->wait_counter = 0;
02142
02143 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02144 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02145
02146 SetWindowClassesDirty(WC_TRAINS_LIST);
02147 return true;
02148 }
02149 } else {
02150 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02151 }
02152
02153
02154 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02155
02156 if (HasDepotReservation(v->tile)) return true;
02157 SetDepotReservation(v->tile, true);
02158 VehicleEnterDepot(v);
02159 return true;
02160 }
02161
02162
02163 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02164
02165 SetWindowClassesDirty(WC_TRAINS_LIST);
02166 MarkTrainAsStuck(v);
02167 return true;
02168 }
02169
02170 SetDepotReservation(v->tile, true);
02171 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02172
02173 VehicleServiceInDepot(v);
02174 SetWindowClassesDirty(WC_TRAINS_LIST);
02175 v->PlayLeaveStationSound();
02176
02177 v->track = TRACK_BIT_X;
02178 if (v->direction & 2) v->track = TRACK_BIT_Y;
02179
02180 v->vehstatus &= ~VS_HIDDEN;
02181 v->cur_speed = 0;
02182
02183 v->UpdateViewport(true, true);
02184 VehicleUpdatePosition(v);
02185 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02186 v->UpdateAcceleration();
02187 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02188
02189 return false;
02190 }
02191
02198 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02199 {
02200 DiagDirection dir = TrackdirToExitdir(track_dir);
02201
02202 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02203
02204 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02205 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02206
02207 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02208
02209 SetTunnelBridgeReservation(tile, false);
02210 SetTunnelBridgeReservation(end, false);
02211
02212 if (_settings_client.gui.show_track_reservation) {
02213 MarkTileDirtyByTile(tile);
02214 MarkTileDirtyByTile(end);
02215 }
02216 }
02217 }
02218 } else if (IsRailStationTile(tile)) {
02219 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02220
02221
02222 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02223 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02224 }
02225 } else {
02226
02227 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02228 }
02229 }
02230
02237 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02238 {
02239 assert(v->IsFrontEngine());
02240
02241 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02242 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02243 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02244 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02245
02246
02247 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02248 if (v->track == TRACK_BIT_DEPOT) {
02249
02250 for (const Train *u = v; u != NULL; u = u->Next()) {
02251 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02252 }
02253 }
02254
02255 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02256
02257 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02258 while (ft.Follow(tile, td)) {
02259 tile = ft.m_new_tile;
02260 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02261 td = RemoveFirstTrackdir(&bits);
02262 assert(bits == TRACKDIR_BIT_NONE);
02263
02264 if (!IsValidTrackdir(td)) break;
02265
02266 if (IsTileType(tile, MP_RAILWAY)) {
02267 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02268
02269 UnreserveRailTrack(tile, TrackdirToTrack(td));
02270 break;
02271 }
02272 if (HasPbsSignalOnTrackdir(tile, td)) {
02273 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02274
02275 break;
02276 } else {
02277
02278 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02279 MarkTileDirtyByTile(tile);
02280 }
02281 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02282 break;
02283 }
02284 }
02285
02286
02287 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);
02288
02289 free_tile = true;
02290 }
02291 }
02292
02293 static const byte _initial_tile_subcoord[6][4][3] = {
02294 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02295 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02296 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02297 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02298 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02299 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02300 };
02301
02314 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02315 {
02316 switch (_settings_game.pf.pathfinder_for_trains) {
02317 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02318 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02319
02320 default: NOT_REACHED();
02321 }
02322 }
02323
02329 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02330 {
02331 PBSTileInfo origin = FollowTrainReservation(v);
02332
02333 CFollowTrackRail ft(v);
02334
02335 TileIndex tile = origin.tile;
02336 Trackdir cur_td = origin.trackdir;
02337 while (ft.Follow(tile, cur_td)) {
02338 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02339
02340 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02341 }
02342
02343 if (_settings_game.pf.forbid_90_deg) {
02344 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02345 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02346 }
02347
02348
02349 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02350 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02351
02352
02353
02354
02355
02356
02357 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02358
02359
02360
02361 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02362
02363
02364 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02365 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02366 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02367 }
02368
02369 tile = ft.m_new_tile;
02370 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02371
02372 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02373 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02374 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02375
02376 return PBSTileInfo(tile, cur_td, true);
02377 }
02378
02379 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02380 }
02381
02382 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02383
02384 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02385 }
02386
02387
02388 tile = origin.tile;
02389 cur_td = origin.trackdir;
02390 TileIndex stopped = ft.m_old_tile;
02391 Trackdir stopped_td = ft.m_old_td;
02392 while (tile != stopped || cur_td != stopped_td) {
02393 if (!ft.Follow(tile, cur_td)) break;
02394
02395 if (_settings_game.pf.forbid_90_deg) {
02396 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02397 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02398 }
02399 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02400
02401 tile = ft.m_new_tile;
02402 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02403
02404 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02405 }
02406
02407
02408 return PBSTileInfo();
02409 }
02410
02421 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02422 {
02423 switch (_settings_game.pf.pathfinder_for_trains) {
02424 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02425 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02426
02427 default: NOT_REACHED();
02428 }
02429 }
02430
02432 class VehicleOrderSaver {
02433 private:
02434 Train *v;
02435 Order old_order;
02436 TileIndex old_dest_tile;
02437 StationID old_last_station_visited;
02438 VehicleOrderID index;
02439 bool suppress_implicit_orders;
02440
02441 public:
02442 VehicleOrderSaver(Train *_v) :
02443 v(_v),
02444 old_order(_v->current_order),
02445 old_dest_tile(_v->dest_tile),
02446 old_last_station_visited(_v->last_station_visited),
02447 index(_v->cur_real_order_index),
02448 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02449 {
02450 }
02451
02452 ~VehicleOrderSaver()
02453 {
02454 this->v->current_order = this->old_order;
02455 this->v->dest_tile = this->old_dest_tile;
02456 this->v->last_station_visited = this->old_last_station_visited;
02457 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02458 }
02459
02465 bool SwitchToNextOrder(bool skip_first)
02466 {
02467 if (this->v->GetNumOrders() == 0) return false;
02468
02469 if (skip_first) ++this->index;
02470
02471 int depth = 0;
02472
02473 do {
02474
02475 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02476
02477 Order *order = this->v->GetOrder(this->index);
02478 assert(order != NULL);
02479
02480 switch (order->GetType()) {
02481 case OT_GOTO_DEPOT:
02482
02483 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02484 case OT_GOTO_STATION:
02485 case OT_GOTO_WAYPOINT:
02486 this->v->current_order = *order;
02487 return UpdateOrderDest(this->v, order, 0, true);
02488 case OT_CONDITIONAL: {
02489 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02490 if (next != INVALID_VEH_ORDER_ID) {
02491 depth++;
02492 this->index = next;
02493
02494 continue;
02495 }
02496 break;
02497 }
02498 default:
02499 break;
02500 }
02501
02502
02503 ++this->index;
02504 depth++;
02505 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02506
02507 return false;
02508 }
02509 };
02510
02511
02512 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02513 {
02514 Track best_track = INVALID_TRACK;
02515 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02516 bool changed_signal = false;
02517
02518 assert((tracks & ~TRACK_BIT_MASK) == 0);
02519
02520 if (got_reservation != NULL) *got_reservation = false;
02521
02522
02523 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02524
02525 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02526
02527
02528 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02529 Track track = FindFirstTrack(tracks);
02530
02531 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02532 do_track_reservation = true;
02533 changed_signal = true;
02534 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02535 } else if (!do_track_reservation) {
02536 return track;
02537 }
02538 best_track = track;
02539 }
02540
02541 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02542 DiagDirection dest_enterdir = enterdir;
02543 if (do_track_reservation) {
02544 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02545 if (res_dest.tile == INVALID_TILE) {
02546
02547 if (mark_stuck) MarkTrainAsStuck(v);
02548 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02549 return FindFirstTrack(tracks);
02550 }
02551 if (res_dest.okay) {
02552
02553 if (got_reservation != NULL) *got_reservation = true;
02554 if (changed_signal) MarkTileDirtyByTile(tile);
02555 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02556 return best_track;
02557 }
02558
02559
02560
02561
02562 CheckIfTrainNeedsService(v);
02563 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02564 }
02565
02566
02567 VehicleOrderSaver orders(v);
02568
02569
02570
02571
02572
02573
02574
02575 if (v->current_order.IsType(OT_LEAVESTATION)) {
02576 orders.SwitchToNextOrder(false);
02577 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02578 v->current_order.IsType(OT_GOTO_STATION) ?
02579 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02580 v->tile == v->dest_tile))) {
02581 orders.SwitchToNextOrder(true);
02582 }
02583
02584 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02585
02586 bool path_found = true;
02587 TileIndex new_tile = res_dest.tile;
02588
02589 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02590 if (new_tile == tile) best_track = next_track;
02591 v->HandlePathfindingResult(path_found);
02592 }
02593
02594
02595 if (!do_track_reservation) return best_track;
02596
02597
02598 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02599 if (mark_stuck) MarkTrainAsStuck(v);
02600 FreeTrainTrackReservation(v);
02601 return best_track;
02602 }
02603
02604
02605 if (res_dest.tile == INVALID_TILE) {
02606
02607 PBSTileInfo origin = FollowTrainReservation(v);
02608 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02609 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02610 best_track = FindFirstTrack(res);
02611 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02612 if (got_reservation != NULL) *got_reservation = true;
02613 if (changed_signal) MarkTileDirtyByTile(tile);
02614 } else {
02615 FreeTrainTrackReservation(v);
02616 if (mark_stuck) MarkTrainAsStuck(v);
02617 }
02618 return best_track;
02619 }
02620
02621 if (got_reservation != NULL) *got_reservation = true;
02622
02623
02624 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02625
02626 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02627 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02628 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02629 if (_settings_game.pf.forbid_90_deg) {
02630 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02631 }
02632
02633
02634 if (orders.SwitchToNextOrder(true)) {
02635 PBSTileInfo cur_dest;
02636 bool path_found;
02637 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02638 if (cur_dest.tile != INVALID_TILE) {
02639 res_dest = cur_dest;
02640 if (res_dest.okay) continue;
02641
02642 FreeTrainTrackReservation(v);
02643 if (mark_stuck) MarkTrainAsStuck(v);
02644 if (got_reservation != NULL) *got_reservation = false;
02645 changed_signal = false;
02646 break;
02647 }
02648 }
02649
02650 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02651 FreeTrainTrackReservation(v);
02652 if (mark_stuck) MarkTrainAsStuck(v);
02653 if (got_reservation != NULL) *got_reservation = false;
02654 changed_signal = false;
02655 }
02656 break;
02657 }
02658
02659 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02660
02661 if (changed_signal) MarkTileDirtyByTile(tile);
02662
02663 return best_track;
02664 }
02665
02674 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02675 {
02676 assert(v->IsFrontEngine());
02677
02678
02679
02680
02681 if (v->track == TRACK_BIT_DEPOT) {
02682 if (HasDepotReservation(v->tile)) {
02683 if (mark_as_stuck) MarkTrainAsStuck(v);
02684 return false;
02685 } else {
02686
02687 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02688 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02689 }
02690 }
02691
02692 Vehicle *other_train = NULL;
02693 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02694
02695
02696
02697
02698
02699 if (other_train != NULL && other_train->index != v->index) {
02700 if (mark_as_stuck) MarkTrainAsStuck(v);
02701 return false;
02702 }
02703
02704 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02705
02706 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02707 ClrBit(v->flags, VRF_TRAIN_STUCK);
02708 return true;
02709 }
02710
02711
02712 if (v->track == TRACK_BIT_DEPOT) {
02713 SetDepotReservation(v->tile, true);
02714 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02715 }
02716
02717 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02718 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02719 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02720
02721 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02722
02723 bool res_made = false;
02724 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02725
02726 if (!res_made) {
02727
02728 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02729 return false;
02730 }
02731
02732 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02733 v->wait_counter = 0;
02734 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02735 }
02736 ClrBit(v->flags, VRF_TRAIN_STUCK);
02737 return true;
02738 }
02739
02740
02741 static bool CheckReverseTrain(const Train *v)
02742 {
02743 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02744 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02745 !(v->direction & 1)) {
02746 return false;
02747 }
02748
02749 assert(v->track != TRACK_BIT_NONE);
02750
02751 switch (_settings_game.pf.pathfinder_for_trains) {
02752 case VPF_NPF: return NPFTrainCheckReverse(v);
02753 case VPF_YAPF: return YapfTrainCheckReverse(v);
02754
02755 default: NOT_REACHED();
02756 }
02757 }
02758
02764 TileIndex Train::GetOrderStationLocation(StationID station)
02765 {
02766 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02767
02768 const Station *st = Station::Get(station);
02769 if (!(st->facilities & FACIL_TRAIN)) {
02770
02771 this->IncrementRealOrderIndex();
02772 return 0;
02773 }
02774
02775 return st->xy;
02776 }
02777
02779 void Train::MarkDirty()
02780 {
02781 Train *v = this;
02782 do {
02783 v->colourmap = PAL_NONE;
02784 v->UpdateViewport(true, false);
02785 } while ((v = v->Next()) != NULL);
02786
02787
02788 this->CargoChanged();
02789 this->UpdateAcceleration();
02790 }
02791
02799 int Train::UpdateSpeed()
02800 {
02801 switch (_settings_game.vehicle.train_acceleration_model) {
02802 default: NOT_REACHED();
02803 case AM_ORIGINAL:
02804 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->GetCurrentMaxSpeed());
02805
02806 case AM_REALISTIC:
02807 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02808 }
02809 }
02810
02816 static void TrainEnterStation(Train *v, StationID station)
02817 {
02818 v->last_station_visited = station;
02819
02820
02821 Station *st = Station::Get(station);
02822 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02823 st->had_vehicle_of_type |= HVOT_TRAIN;
02824 SetDParam(0, st->index);
02825 AddVehicleNewsItem(
02826 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02827 v->owner == _local_company ? NT_ARRIVAL_COMPANY : NT_ARRIVAL_OTHER,
02828 v->index,
02829 st->index
02830 );
02831 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02832 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02833 }
02834
02835 v->force_proceed = TFP_NONE;
02836 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02837
02838 v->BeginLoading();
02839
02840 TriggerStationRandomisation(st, v->tile, SRT_TRAIN_ARRIVES);
02841 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02842 }
02843
02844
02845 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02846 {
02847 return IsTileOwner(tile, v->owner) &&
02848 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02849 }
02850
02852 struct AccelerationSlowdownParams {
02853 byte small_turn;
02854 byte large_turn;
02855 byte z_up;
02856 byte z_down;
02857 };
02858
02860 static const AccelerationSlowdownParams _accel_slowdown[] = {
02861
02862 {256 / 4, 256 / 2, 256 / 4, 2},
02863 {256 / 4, 256 / 2, 256 / 4, 2},
02864 {0, 256 / 2, 256 / 4, 2},
02865 };
02866
02872 static inline void AffectSpeedByZChange(Train *v, int old_z)
02873 {
02874 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02875
02876 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02877
02878 if (old_z < v->z_pos) {
02879 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02880 } else {
02881 uint16 spd = v->cur_speed + asp->z_down;
02882 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02883 }
02884 }
02885
02886 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02887 {
02888 if (IsTileType(tile, MP_RAILWAY) &&
02889 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02890 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02891 Trackdir trackdir = FindFirstTrackdir(tracks);
02892 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02893
02894 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02895 }
02896 }
02897 return false;
02898 }
02899
02901 void Train::ReserveTrackUnderConsist() const
02902 {
02903 for (const Train *u = this; u != NULL; u = u->Next()) {
02904 switch (u->track) {
02905 case TRACK_BIT_WORMHOLE:
02906 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02907 break;
02908 case TRACK_BIT_DEPOT:
02909 break;
02910 default:
02911 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02912 break;
02913 }
02914 }
02915 }
02916
02923 uint Train::Crash(bool flooded)
02924 {
02925 uint pass = 0;
02926 if (this->IsFrontEngine()) {
02927 pass += 2;
02928
02929
02930
02931 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02932 for (const Train *v = this; v != NULL; v = v->Next()) {
02933 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02934 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02935
02936
02937 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02938 }
02939 }
02940
02941
02942
02943 TileIndex crossing = TrainApproachingCrossingTile(this);
02944 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02945
02946
02947 HideFillingPercent(&this->fill_percent_te_id);
02948 }
02949
02950 pass += this->GroundVehicleBase::Crash(flooded);
02951
02952 this->crash_anim_pos = flooded ? 4000 : 1;
02953 return pass;
02954 }
02955
02962 static uint TrainCrashed(Train *v)
02963 {
02964 uint num = 0;
02965
02966
02967 if (!(v->vehstatus & VS_CRASHED)) {
02968 num = v->Crash();
02969 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02970 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02971 }
02972
02973
02974
02975 v->ReserveTrackUnderConsist();
02976
02977 return num;
02978 }
02979
02981 struct TrainCollideChecker {
02982 Train *v;
02983 uint num;
02984 };
02985
02992 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02993 {
02994 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02995
02996
02997 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02998
02999
03000 if (v->owner != tcc->v->owner) return NULL;
03001
03002
03003 Train *coll = Train::From(v)->First();
03004
03005
03006 if (coll == tcc->v) return NULL;
03007
03008 int x_diff = v->x_pos - tcc->v->x_pos;
03009 int y_diff = v->y_pos - tcc->v->y_pos;
03010
03011
03012
03013
03014
03015 uint hash = (y_diff + 7) | (x_diff + 7);
03016 if (hash & ~15) return NULL;
03017
03018
03019 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
03020 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
03021
03022
03023 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03024
03025
03026 tcc->num += TrainCrashed(tcc->v);
03027 tcc->num += TrainCrashed(coll);
03028
03029 return NULL;
03030 }
03031
03039 static bool CheckTrainCollision(Train *v)
03040 {
03041
03042 if (v->track == TRACK_BIT_DEPOT) return false;
03043
03044 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03045
03046 TrainCollideChecker tcc;
03047 tcc.v = v;
03048 tcc.num = 0;
03049
03050
03051 if (v->track == TRACK_BIT_WORMHOLE) {
03052 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03053 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03054 } else {
03055 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03056 }
03057
03058
03059 if (tcc.num == 0) return false;
03060
03061 SetDParam(0, tcc.num);
03062 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH, NT_ACCIDENT, v->index);
03063
03064 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03065 if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03066 return true;
03067 }
03068
03069 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03070 {
03071 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03072
03073 Train *t = Train::From(v);
03074 DiagDirection exitdir = *(DiagDirection *)data;
03075
03076
03077 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03078
03079 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03080
03081 return t;
03082 }
03083
03091 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03092 {
03093 Train *first = v->First();
03094 Train *prev;
03095 bool direction_changed = false;
03096
03097
03098 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03099 DiagDirection enterdir = DIAGDIR_BEGIN;
03100 bool update_signals_crossing = false;
03101
03102 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03103 if (v->track != TRACK_BIT_WORMHOLE) {
03104
03105 if (gp.old_tile == gp.new_tile) {
03106
03107 if (v->track == TRACK_BIT_DEPOT) {
03108
03109 gp.x = v->x_pos;
03110 gp.y = v->y_pos;
03111 } else {
03112
03113
03114
03115 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03116
03117 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03118 if (HasBit(r, VETS_CANNOT_ENTER)) {
03119 goto invalid_rail;
03120 }
03121 if (HasBit(r, VETS_ENTERED_STATION)) {
03122
03123 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03124 }
03125 }
03126 } else {
03127
03128
03129
03130 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03131 assert(IsValidDiagDirection(enterdir));
03132
03133
03134
03135 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03136 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03137
03138 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03139 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03140
03141 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03142 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03143
03144
03145 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03146 }
03147
03148 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03149
03150
03151
03152 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03153
03154 TrackBits chosen_track;
03155 if (prev == NULL) {
03156
03157
03158 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03159 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03160
03161 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03162
03163
03164
03165
03166 Trackdir dir = FindFirstTrackdir(trackdirbits);
03167 if (HasSignalOnTrackdir(gp.new_tile, dir) ||
03168 (HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir)) &&
03169 GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS)) {
03170
03171
03172 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03173 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03174 }
03175 }
03176
03177
03178 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03179
03180 Trackdir i = FindFirstTrackdir(trackdirbits);
03181
03182
03183 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03184
03185 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03186 v->cur_speed = 0;
03187 v->subspeed = 0;
03188 v->progress = 255 - 100;
03189 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03190 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03191 v->cur_speed = 0;
03192 v->subspeed = 0;
03193 v->progress = 255 - 10;
03194 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03195 DiagDirection exitdir = TrackdirToExitdir(i);
03196 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03197
03198 exitdir = ReverseDiagDir(exitdir);
03199
03200
03201 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03202 }
03203 }
03204
03205
03206
03207
03208
03209 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03210 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03211 v->wait_counter = 0;
03212 return false;
03213 }
03214 goto reverse_train_direction;
03215 } else {
03216 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track), false);
03217 }
03218 } else {
03219
03220 if (prev->tile == gp.new_tile) {
03221
03222 if (prev->track == TRACK_BIT_WORMHOLE) {
03223
03224
03225 assert(IsTunnel(prev->tile));
03226 chosen_track = bits;
03227 } else {
03228 chosen_track = prev->track;
03229 }
03230 } else {
03231
03232
03233
03234
03235
03236
03237
03238 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03239 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03240 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03241 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03242 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03243 };
03244 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03245 assert(IsValidDiagDirection(exitdir));
03246 chosen_track = _connecting_track[enterdir][exitdir];
03247 }
03248 chosen_track &= bits;
03249 }
03250
03251
03252 assert(
03253 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03254 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03255 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03256
03257
03258 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03259 gp.x = (gp.x & ~0xF) | b[0];
03260 gp.y = (gp.y & ~0xF) | b[1];
03261 Direction chosen_dir = (Direction)b[2];
03262
03263
03264 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03265 if (HasBit(r, VETS_CANNOT_ENTER)) {
03266 goto invalid_rail;
03267 }
03268
03269 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03270 Track track = FindFirstTrack(chosen_track);
03271 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03272 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03273 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03274 MarkTileDirtyByTile(gp.new_tile);
03275 }
03276
03277
03278 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03279
03280 v->tile = gp.new_tile;
03281
03282 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03283 v->First()->ConsistChanged(CCF_TRACK);
03284 }
03285
03286 v->track = chosen_track;
03287 assert(v->track);
03288 }
03289
03290
03291
03292 update_signals_crossing = true;
03293
03294 if (chosen_dir != v->direction) {
03295 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03296 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03297 DirDiff diff = DirDifference(v->direction, chosen_dir);
03298 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03299 }
03300 direction_changed = true;
03301 v->direction = chosen_dir;
03302 }
03303
03304 if (v->IsFrontEngine()) {
03305 v->wait_counter = 0;
03306
03307
03308 TileIndex crossing = TrainApproachingCrossingTile(v);
03309 if (crossing != INVALID_TILE && HasCrossingReservation(crossing) && _settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03310
03311
03312 CheckNextTrainTile(v);
03313 }
03314
03315 if (HasBit(r, VETS_ENTERED_STATION)) {
03316
03317 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03318 }
03319 }
03320 } else {
03321 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03322
03323 if (v->IsFrontEngine()) {
03324 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03325 CheckNextTrainTile(v);
03326 }
03327
03328
03329 if (gp.old_tile == gp.new_tile) {
03330 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03331 }
03332 } else {
03333 v->x_pos = gp.x;
03334 v->y_pos = gp.y;
03335 VehicleUpdatePosition(v);
03336 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03337 continue;
03338 }
03339 }
03340
03341
03342 v->UpdateDeltaXY(v->direction);
03343
03344 v->x_pos = gp.x;
03345 v->y_pos = gp.y;
03346 VehicleUpdatePosition(v);
03347
03348
03349 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03350
03351 if (prev == NULL) {
03352
03353 AffectSpeedByZChange(v, old_z);
03354 }
03355
03356 if (update_signals_crossing) {
03357 if (v->IsFrontEngine()) {
03358 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03359
03360
03361
03362
03363
03364
03365
03366
03367 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03368 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03369 !TryPathReserve(v)) {
03370 MarkTrainAsStuck(v);
03371 }
03372 }
03373 }
03374
03375
03376
03377 if (v->Next() == NULL) {
03378 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03379 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03380 }
03381 }
03382
03383
03384 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03385 }
03386
03387 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03388
03389 return true;
03390
03391 invalid_rail:
03392
03393 if (prev != NULL) error("Disconnecting train");
03394
03395 reverse_train_direction:
03396 if (reverse) {
03397 v->wait_counter = 0;
03398 v->cur_speed = 0;
03399 v->subspeed = 0;
03400 ReverseTrainDirection(v);
03401 }
03402
03403 return false;
03404 }
03405
03412 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03413 {
03414 TrackBits *trackbits = (TrackBits *)data;
03415
03416 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03417 TrackBits train_tbits = Train::From(v)->track;
03418 if (train_tbits == TRACK_BIT_WORMHOLE) {
03419
03420 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03421 } else if (train_tbits != TRACK_BIT_DEPOT) {
03422 *trackbits |= train_tbits;
03423 }
03424 }
03425
03426 return NULL;
03427 }
03428
03436 static void DeleteLastWagon(Train *v)
03437 {
03438 Train *first = v->First();
03439
03440
03441
03442
03443 Train *u = v;
03444 for (; v->Next() != NULL; v = v->Next()) u = v;
03445 u->SetNext(NULL);
03446
03447 if (first != v) {
03448
03449 first->ConsistChanged(CCF_ARRANGE);
03450
03451
03452 if (first->track == TRACK_BIT_DEPOT) {
03453 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03454 }
03455 v->last_station_visited = first->last_station_visited;
03456 }
03457
03458
03459 TrackBits trackbits = v->track;
03460 TileIndex tile = v->tile;
03461 Owner owner = v->owner;
03462
03463 delete v;
03464 v = NULL;
03465
03466 if (trackbits == TRACK_BIT_WORMHOLE) {
03467
03468 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03469 }
03470
03471 Track track = TrackBitsToTrack(trackbits);
03472 if (HasReservedTracks(tile, trackbits)) {
03473 UnreserveRailTrack(tile, track);
03474
03475
03476 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03477 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03478
03479
03480 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03481 Track t;
03482 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03483 }
03484
03485
03486 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03487
03488
03489 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03490 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03491 } else {
03492 SetSignalsOnBothDir(tile, track, owner);
03493 }
03494 }
03495
03500 static void ChangeTrainDirRandomly(Train *v)
03501 {
03502 static const DirDiff delta[] = {
03503 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03504 };
03505
03506 do {
03507
03508 if (!(v->vehstatus & VS_HIDDEN)) {
03509 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03510 v->UpdateDeltaXY(v->direction);
03511 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03512
03513
03514
03515 if (v->track != TRACK_BIT_WORMHOLE) {
03516 VehicleUpdatePosition(v);
03517 v->UpdateInclination(false, false);
03518 }
03519 }
03520 } while ((v = v->Next()) != NULL);
03521 }
03522
03528 static bool HandleCrashedTrain(Train *v)
03529 {
03530 int state = ++v->crash_anim_pos;
03531
03532 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03533 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03534 }
03535
03536 uint32 r;
03537 if (state <= 200 && Chance16R(1, 7, r)) {
03538 int index = (r * 10 >> 16);
03539
03540 Vehicle *u = v;
03541 do {
03542 if (--index < 0) {
03543 r = Random();
03544
03545 CreateEffectVehicleRel(u,
03546 GB(r, 8, 3) + 2,
03547 GB(r, 16, 3) + 2,
03548 GB(r, 0, 3) + 5,
03549 EV_EXPLOSION_SMALL);
03550 break;
03551 }
03552 } while ((u = u->Next()) != NULL);
03553 }
03554
03555 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03556
03557 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03558 bool ret = v->Next() != NULL;
03559 DeleteLastWagon(v);
03560 return ret;
03561 }
03562
03563 return true;
03564 }
03565
03567 static const uint16 _breakdown_speeds[16] = {
03568 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03569 };
03570
03571
03580 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03581 {
03582
03583 uint x = v->x_pos & 0xF;
03584 uint y = v->y_pos & 0xF;
03585
03586
03587
03588 switch (v->direction) {
03589 case DIR_N : x = ~x + ~y + 25; break;
03590 case DIR_NW: x = y;
03591 case DIR_NE: x = ~x + 16; break;
03592 case DIR_E : x = ~x + y + 9; break;
03593 case DIR_SE: x = y; break;
03594 case DIR_S : x = x + y - 7; break;
03595 case DIR_W : x = ~y + x + 9; break;
03596 default: break;
03597 }
03598
03599
03600
03601
03602
03603
03604 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03605
03606 v->cur_speed = 0;
03607 if (reverse) ReverseTrainDirection(v);
03608 return false;
03609 }
03610
03611
03612 v->vehstatus |= VS_TRAIN_SLOWING;
03613 uint16 break_speed = _breakdown_speeds[x & 0xF];
03614 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03615
03616 return true;
03617 }
03618
03619
03625 static bool TrainCanLeaveTile(const Train *v)
03626 {
03627
03628 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03629
03630 TileIndex tile = v->tile;
03631
03632
03633 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03634 DiagDirection dir = GetTunnelBridgeDirection(tile);
03635 if (DiagDirToDir(dir) == v->direction) return false;
03636 }
03637
03638
03639 if (IsRailDepotTile(tile)) {
03640 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03641 if (DiagDirToDir(dir) == v->direction) return false;
03642 }
03643
03644 return true;
03645 }
03646
03647
03655 static TileIndex TrainApproachingCrossingTile(const Train *v)
03656 {
03657 assert(v->IsFrontEngine());
03658 assert(!(v->vehstatus & VS_CRASHED));
03659
03660 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03661
03662 DiagDirection dir = TrainExitDir(v->direction, v->track);
03663 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03664
03665
03666 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03667 !CheckCompatibleRail(v, tile)) {
03668 return INVALID_TILE;
03669 }
03670
03671 return tile;
03672 }
03673
03674
03682 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03683 {
03684
03685
03686 int t = v->breakdown_ctr;
03687 if (t > 1) {
03688 v->vehstatus |= VS_TRAIN_SLOWING;
03689
03690 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03691 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03692 } else {
03693 v->vehstatus &= ~VS_TRAIN_SLOWING;
03694 }
03695
03696 if (!TrainCanLeaveTile(v)) return true;
03697
03698
03699 DiagDirection dir = TrainExitDir(v->direction, v->track);
03700
03701 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03702
03703
03704 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03705 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03706
03707 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03708 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03709
03710
03711
03712
03713 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03714 if (_settings_game.pf.forbid_90_deg) {
03715 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03716 }
03717
03718
03719 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03720 return TrainApproachingLineEnd(v, false, reverse);
03721 }
03722
03723
03724 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03725
03726
03727 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03728
03729 return true;
03730 }
03731
03732
03733 static bool TrainLocoHandler(Train *v, bool mode)
03734 {
03735
03736 if (v->vehstatus & VS_CRASHED) {
03737 return mode ? true : HandleCrashedTrain(v);
03738 }
03739
03740 if (v->force_proceed != TFP_NONE) {
03741 ClrBit(v->flags, VRF_TRAIN_STUCK);
03742 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03743 }
03744
03745
03746 if (v->HandleBreakdown()) return true;
03747
03748 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03749 ReverseTrainDirection(v);
03750 }
03751
03752
03753 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03754
03755 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03756 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03757 v->wait_counter = 0;
03758 v->cur_speed = 0;
03759 v->subspeed = 0;
03760 ClrBit(v->flags, VRF_LEAVING_STATION);
03761 ReverseTrainDirection(v);
03762 return true;
03763 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03764
03765
03766
03767 DiagDirection dir = TrainExitDir(v->direction, v->track);
03768 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03769
03770 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03771 TryPathReserve(v, true, true);
03772 }
03773 ClrBit(v->flags, VRF_LEAVING_STATION);
03774 }
03775
03776 v->HandleLoading(mode);
03777
03778 if (v->current_order.IsType(OT_LOADING)) return true;
03779
03780 if (CheckTrainStayInDepot(v)) return true;
03781
03782 if (!mode) v->ShowVisualEffect();
03783
03784
03785 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03786 CheckNextTrainTile(v);
03787 }
03788
03789
03790 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03791 ++v->wait_counter;
03792
03793
03794 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03795
03796 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03797 if (!TryPathReserve(v)) {
03798
03799 if (turn_around) ReverseTrainDirection(v);
03800
03801 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03802
03803 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03804 SetDParam(0, v->index);
03805 AddVehicleAdviceNewsItem(STR_NEWS_TRAIN_IS_STUCK, v->index);
03806 }
03807 v->wait_counter = 0;
03808 }
03809
03810 if (v->force_proceed == TFP_NONE) return true;
03811 ClrBit(v->flags, VRF_TRAIN_STUCK);
03812 v->wait_counter = 0;
03813 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03814 }
03815 }
03816
03817 if (v->current_order.IsType(OT_LEAVESTATION)) {
03818 v->current_order.Free();
03819 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03820 return true;
03821 }
03822
03823 int j = v->UpdateSpeed();
03824
03825
03826 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03827
03828 v->force_proceed = TFP_NONE;
03829 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03830 }
03831
03832 int adv_spd = v->GetAdvanceDistance();
03833 if (j < adv_spd) {
03834
03835 if (v->cur_speed == 0) v->SetLastSpeed();
03836 } else {
03837 TrainCheckIfLineEnds(v);
03838
03839 for (;;) {
03840 j -= adv_spd;
03841 TrainController(v, NULL);
03842
03843 if (CheckTrainCollision(v)) break;
03844
03845 adv_spd = v->GetAdvanceDistance();
03846
03847
03848 if (j < adv_spd || v->cur_speed == 0) break;
03849
03850 OrderType order_type = v->current_order.GetType();
03851
03852 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03853 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03854 IsTileType(v->tile, MP_STATION) &&
03855 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03856 ProcessOrders(v);
03857 }
03858 }
03859 v->SetLastSpeed();
03860 }
03861
03862 for (Train *u = v; u != NULL; u = u->Next()) {
03863 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03864
03865 u->UpdateViewport(false, false);
03866 }
03867
03868 if (v->progress == 0) v->progress = j;
03869
03870 return true;
03871 }
03872
03877 Money Train::GetRunningCost() const
03878 {
03879 Money cost = 0;
03880 const Train *v = this;
03881
03882 do {
03883 const Engine *e = v->GetEngine();
03884 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03885
03886 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03887 if (cost_factor == 0) continue;
03888
03889
03890 if (v->IsMultiheaded()) cost_factor /= 2;
03891
03892 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03893 } while ((v = v->GetNextVehicle()) != NULL);
03894
03895 return cost;
03896 }
03897
03902 bool Train::Tick()
03903 {
03904 this->tick_counter++;
03905
03906 if (this->IsFrontEngine()) {
03907 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03908
03909 this->current_order_time++;
03910
03911 if (!TrainLocoHandler(this, false)) return false;
03912
03913 return TrainLocoHandler(this, true);
03914 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03915
03916 if (++this->crash_anim_pos >= 4400) {
03917 delete this;
03918 return false;
03919 }
03920 }
03921
03922 return true;
03923 }
03924
03929 static void CheckIfTrainNeedsService(Train *v)
03930 {
03931 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03932 if (v->IsChainInDepot()) {
03933 VehicleServiceInDepot(v);
03934 return;
03935 }
03936
03937 uint max_penalty;
03938 switch (_settings_game.pf.pathfinder_for_trains) {
03939 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03940 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03941 default: NOT_REACHED();
03942 }
03943
03944 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03945
03946 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03947 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03948
03949
03950
03951 v->current_order.MakeDummy();
03952 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03953 }
03954 return;
03955 }
03956
03957 DepotID depot = GetDepotIndex(tfdd.tile);
03958
03959 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03960 v->current_order.GetDestination() != depot &&
03961 !Chance16(3, 16)) {
03962 return;
03963 }
03964
03965 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03966 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03967 v->dest_tile = tfdd.tile;
03968 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03969 }
03970
03972 void Train::OnNewDay()
03973 {
03974 AgeVehicle(this);
03975
03976 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03977
03978 if (this->IsFrontEngine()) {
03979 CheckVehicleBreakdown(this);
03980
03981 CheckIfTrainNeedsService(this);
03982
03983 CheckOrders(this);
03984
03985
03986 if (this->current_order.IsType(OT_GOTO_STATION)) {
03987 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03988 if (tile != INVALID_TILE) this->dest_tile = tile;
03989 }
03990
03991 if (this->running_ticks != 0) {
03992
03993 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03994
03995 this->profit_this_year -= cost.GetCost();
03996 this->running_ticks = 0;
03997
03998 SubtractMoneyFromCompanyFract(this->owner, cost);
03999
04000 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
04001 SetWindowClassesDirty(WC_TRAINS_LIST);
04002 }
04003 }
04004 }
04005
04010 Trackdir Train::GetVehicleTrackdir() const
04011 {
04012 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
04013
04014 if (this->track == TRACK_BIT_DEPOT) {
04015
04016 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
04017 }
04018
04019 if (this->track == TRACK_BIT_WORMHOLE) {
04020
04021 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
04022 }
04023
04024 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04025 }