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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(bool same_length)
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 u->refit_cap = min(new_cap, u->refit_cap);
00211 u->cargo_cap = new_cap;
00212 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00213
00214
00215 uint16 veh_len = CALLBACK_FAILED;
00216 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00217
00218 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00219
00220 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00221 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00222 }
00223 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00224
00225 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00226 }
00227 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00228 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00229
00230
00231 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00232
00233
00234 if (!same_length) u->gcache.cached_veh_length = veh_len;
00235
00236 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00237 this->InvalidateNewGRFCache();
00238 u->InvalidateNewGRFCache();
00239 }
00240
00241
00242 this->vcache.cached_max_speed = max_speed;
00243 this->tcache.cached_tilt = train_can_tilt;
00244 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00245
00246
00247 this->CargoChanged();
00248
00249 if (this->IsFrontEngine()) {
00250 this->UpdateAcceleration();
00251 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00252 InvalidateWindowData(WC_VEHICLE_REFIT, this->index, VIWD_CONSIST_CHANGED);
00253 InvalidateWindowData(WC_VEHICLE_ORDERS, this->index, VIWD_CONSIST_CHANGED);
00254 InvalidateNewGRFInspectWindow(GSF_TRAINS, this->index);
00255 }
00256 }
00257
00268 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00269 {
00270 const Station *st = Station::Get(station_id);
00271 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00272 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00273
00274
00275
00276 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00277 if (v->gcache.cached_total_length >= *station_length) {
00278
00279 osl = OSL_PLATFORM_FAR_END;
00280 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00281 osl = v->current_order.GetStopLocation();
00282 }
00283
00284
00285 int stop;
00286 switch (osl) {
00287 default: NOT_REACHED();
00288
00289 case OSL_PLATFORM_NEAR_END:
00290 stop = v->gcache.cached_total_length;
00291 break;
00292
00293 case OSL_PLATFORM_MIDDLE:
00294 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00295 break;
00296
00297 case OSL_PLATFORM_FAR_END:
00298 stop = *station_length;
00299 break;
00300 }
00301
00302
00303
00304 return stop - (v->gcache.cached_veh_length + 1) / 2;
00305 }
00306
00307
00312 int Train::GetCurveSpeedLimit() const
00313 {
00314 assert(this->First() == this);
00315
00316 static const int absolute_max_speed = UINT16_MAX;
00317 int max_speed = absolute_max_speed;
00318
00319 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00320
00321 int curvecount[2] = {0, 0};
00322
00323
00324 int numcurve = 0;
00325 int sum = 0;
00326 int pos = 0;
00327 int lastpos = -1;
00328 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00329 Direction this_dir = u->direction;
00330 Direction next_dir = u->Next()->direction;
00331
00332 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00333 if (dirdiff == DIRDIFF_SAME) continue;
00334
00335 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00336 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00337 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00338 if (lastpos != -1) {
00339 numcurve++;
00340 sum += pos - lastpos;
00341 if (pos - lastpos == 1 && max_speed > 88) {
00342 max_speed = 88;
00343 }
00344 }
00345 lastpos = pos;
00346 }
00347
00348
00349 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00350 max_speed = 61;
00351 }
00352 }
00353
00354 if (numcurve > 0 && max_speed > 88) {
00355 if (curvecount[0] == 1 && curvecount[1] == 1) {
00356 max_speed = absolute_max_speed;
00357 } else {
00358 sum /= numcurve;
00359 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00360 }
00361 }
00362
00363 if (max_speed != absolute_max_speed) {
00364
00365 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00366 max_speed += (max_speed / 2) * rti->curve_speed;
00367
00368 if (this->tcache.cached_tilt) {
00369
00370 max_speed += max_speed / 5;
00371 }
00372 }
00373
00374 return max_speed;
00375 }
00376
00381 int Train::GetCurrentMaxSpeed() const
00382 {
00383 int max_speed = _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL ?
00384 this->gcache.cached_max_track_speed :
00385 this->tcache.cached_max_curve_speed;
00386
00387 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && IsRailStationTile(this->tile)) {
00388 StationID sid = GetStationIndex(this->tile);
00389 if (this->current_order.ShouldStopAtStation(this, sid)) {
00390 int station_ahead;
00391 int station_length;
00392 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00393
00394
00395
00396 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00397
00398 if (distance_to_go > 0) {
00399 int st_max_speed = 120;
00400
00401 int delta_v = this->cur_speed / (distance_to_go + 1);
00402 if (max_speed > (this->cur_speed - delta_v)) {
00403 st_max_speed = this->cur_speed - (delta_v / 10);
00404 }
00405
00406 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00407 max_speed = min(max_speed, st_max_speed);
00408 }
00409 }
00410 }
00411
00412 for (const Train *u = this; u != NULL; u = u->Next()) {
00413 if (_settings_game.vehicle.train_acceleration_model == AM_REALISTIC && u->track == TRACK_BIT_DEPOT) {
00414 max_speed = min(max_speed, 61);
00415 break;
00416 }
00417
00418
00419 if (u->track == TRACK_BIT_WORMHOLE && !(u->vehstatus & VS_HIDDEN)) {
00420 max_speed = min(max_speed, GetBridgeSpec(GetBridgeType(u->tile))->speed);
00421 }
00422 }
00423
00424 max_speed = min(max_speed, this->current_order.max_speed);
00425 return min(max_speed, this->gcache.cached_max_track_speed);
00426 }
00427
00429 void Train::UpdateAcceleration()
00430 {
00431 assert(this->IsFrontEngine() || this->IsFreeWagon());
00432
00433 uint power = this->gcache.cached_power;
00434 uint weight = this->gcache.cached_weight;
00435 assert(weight != 0);
00436 this->acceleration = Clamp(power / weight * 4, 1, 255);
00437 }
00438
00444 int Train::GetDisplayImageWidth(Point *offset) const
00445 {
00446 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00447 int vehicle_pitch = 0;
00448
00449 const Engine *e = this->GetEngine();
00450 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00451 reference_width = e->GetGRF()->traininfo_vehicle_width;
00452 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00453 }
00454
00455 if (offset != NULL) {
00456 offset->x = reference_width / 2;
00457 offset->y = vehicle_pitch;
00458 }
00459 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00460 }
00461
00462 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00463 {
00464 assert(IsValidImageIndex<VEH_TRAIN>(spritenum));
00465 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00466 }
00467
00474 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00475 {
00476 uint8 spritenum = this->spritenum;
00477 SpriteID sprite;
00478
00479 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00480
00481 if (is_custom_sprite(spritenum)) {
00482 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00483 if (sprite != 0) return sprite;
00484
00485 spritenum = this->GetEngine()->original_image_index;
00486 }
00487
00488 assert(IsValidImageIndex<VEH_TRAIN>(spritenum));
00489 sprite = GetDefaultTrainSprite(spritenum, direction);
00490
00491 if (this->cargo.StoredCount() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00492
00493 return sprite;
00494 }
00495
00496 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00497 {
00498 const Engine *e = Engine::Get(engine);
00499 Direction dir = rear_head ? DIR_E : DIR_W;
00500 uint8 spritenum = e->u.rail.image_index;
00501
00502 if (is_custom_sprite(spritenum)) {
00503 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00504 if (sprite != 0) {
00505 if (e->GetGRF() != NULL) {
00506 y += e->GetGRF()->traininfo_vehicle_pitch;
00507 }
00508 return sprite;
00509 }
00510
00511 spritenum = Engine::Get(engine)->original_image_index;
00512 }
00513
00514 if (rear_head) spritenum++;
00515
00516 return GetDefaultTrainSprite(spritenum, DIR_W);
00517 }
00518
00519 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00520 {
00521 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00522 int yf = y;
00523 int yr = y;
00524
00525 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00526 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00527 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00528 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00529
00530 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);
00531
00532 DrawSprite(spritef, pal, preferred_x - 14, yf);
00533 DrawSprite(spriter, pal, preferred_x + 15, yr);
00534 } else {
00535 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00536 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00537 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));
00538 DrawSprite(sprite, pal, preferred_x, y);
00539 }
00540 }
00541
00551 void GetTrainSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type)
00552 {
00553 int y = 0;
00554
00555 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00556 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00557
00558 width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
00559 height = UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI);
00560 xoffs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
00561 yoffs = UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI);
00562
00563 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00564 sprite = GetRailIcon(engine, true, y, image_type);
00565 real_sprite = GetSprite(sprite, ST_NORMAL);
00566
00567
00568 width = TRAININFO_DEFAULT_VEHICLE_WIDTH + UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI) + UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI) - xoffs;
00569 height = max<uint>(height, UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI));
00570 xoffs = xoffs - TRAININFO_DEFAULT_VEHICLE_WIDTH / 2;
00571 yoffs = min(yoffs, UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI));
00572 }
00573 }
00574
00583 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00584 {
00585 const RailVehicleInfo *rvi = &e->u.rail;
00586
00587
00588 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00589
00590 if (flags & DC_EXEC) {
00591 Train *v = new Train();
00592 *ret = v;
00593 v->spritenum = rvi->image_index;
00594
00595 v->engine_type = e->index;
00596 v->gcache.first_engine = INVALID_ENGINE;
00597
00598 DiagDirection dir = GetRailDepotDirection(tile);
00599
00600 v->direction = DiagDirToDir(dir);
00601 v->tile = tile;
00602
00603 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00604 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00605
00606 v->x_pos = x;
00607 v->y_pos = y;
00608 v->z_pos = GetSlopePixelZ(x, y);
00609 v->owner = _current_company;
00610 v->track = TRACK_BIT_DEPOT;
00611 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00612
00613 v->SetWagon();
00614
00615 v->SetFreeWagon();
00616 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00617
00618 v->cargo_type = e->GetDefaultCargoType();
00619 v->cargo_cap = rvi->capacity;
00620 v->refit_cap = 0;
00621
00622 v->railtype = rvi->railtype;
00623
00624 v->build_year = _cur_year;
00625 v->cur_image = SPR_IMG_QUERY;
00626 v->random_bits = VehicleRandomBits();
00627
00628 v->group_id = DEFAULT_GROUP;
00629
00630 AddArticulatedParts(v);
00631
00632 _new_vehicle_id = v->index;
00633
00634 VehicleUpdatePosition(v);
00635 v->First()->ConsistChanged(false);
00636 UpdateTrainGroupID(v->First());
00637
00638 CheckConsistencyOfArticulatedVehicle(v);
00639
00640
00641 Train *w;
00642 FOR_ALL_TRAINS(w) {
00643 if (w->tile == tile &&
00644 w->IsFreeWagon() &&
00645 w->engine_type == e->index &&
00646 w->First() != v &&
00647 !(w->vehstatus & VS_CRASHED)) {
00648 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00649 break;
00650 }
00651 }
00652 }
00653
00654 return CommandCost();
00655 }
00656
00658 static void NormalizeTrainVehInDepot(const Train *u)
00659 {
00660 const Train *v;
00661 FOR_ALL_TRAINS(v) {
00662 if (v->IsFreeWagon() && v->tile == u->tile &&
00663 v->track == TRACK_BIT_DEPOT) {
00664 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00665 CMD_MOVE_RAIL_VEHICLE).Failed())
00666 break;
00667 }
00668 }
00669 }
00670
00671 static void AddRearEngineToMultiheadedTrain(Train *v)
00672 {
00673 Train *u = new Train();
00674 v->value >>= 1;
00675 u->value = v->value;
00676 u->direction = v->direction;
00677 u->owner = v->owner;
00678 u->tile = v->tile;
00679 u->x_pos = v->x_pos;
00680 u->y_pos = v->y_pos;
00681 u->z_pos = v->z_pos;
00682 u->track = TRACK_BIT_DEPOT;
00683 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00684 u->spritenum = v->spritenum + 1;
00685 u->cargo_type = v->cargo_type;
00686 u->cargo_subtype = v->cargo_subtype;
00687 u->cargo_cap = v->cargo_cap;
00688 u->refit_cap = v->refit_cap;
00689 u->railtype = v->railtype;
00690 u->engine_type = v->engine_type;
00691 u->build_year = v->build_year;
00692 u->cur_image = SPR_IMG_QUERY;
00693 u->random_bits = VehicleRandomBits();
00694 v->SetMultiheaded();
00695 u->SetMultiheaded();
00696 v->SetNext(u);
00697 VehicleUpdatePosition(u);
00698
00699
00700 v->other_multiheaded_part = u;
00701 u->other_multiheaded_part = v;
00702 }
00703
00713 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00714 {
00715 const RailVehicleInfo *rvi = &e->u.rail;
00716
00717 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00718
00719
00720
00721 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00722
00723 if (flags & DC_EXEC) {
00724 DiagDirection dir = GetRailDepotDirection(tile);
00725 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00726 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00727
00728 Train *v = new Train();
00729 *ret = v;
00730 v->direction = DiagDirToDir(dir);
00731 v->tile = tile;
00732 v->owner = _current_company;
00733 v->x_pos = x;
00734 v->y_pos = y;
00735 v->z_pos = GetSlopePixelZ(x, y);
00736 v->track = TRACK_BIT_DEPOT;
00737 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00738 v->spritenum = rvi->image_index;
00739 v->cargo_type = e->GetDefaultCargoType();
00740 v->cargo_cap = rvi->capacity;
00741 v->refit_cap = 0;
00742 v->last_station_visited = INVALID_STATION;
00743 v->last_loading_station = INVALID_STATION;
00744
00745 v->engine_type = e->index;
00746 v->gcache.first_engine = INVALID_ENGINE;
00747
00748 v->reliability = e->reliability;
00749 v->reliability_spd_dec = e->reliability_spd_dec;
00750 v->max_age = e->GetLifeLengthInDays();
00751
00752 v->railtype = rvi->railtype;
00753 _new_vehicle_id = v->index;
00754
00755 v->SetServiceInterval(Company::Get(_current_company)->settings.vehicle.servint_trains);
00756 v->date_of_last_service = _date;
00757 v->build_year = _cur_year;
00758 v->cur_image = SPR_IMG_QUERY;
00759 v->random_bits = VehicleRandomBits();
00760
00761 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00762 v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);
00763
00764 v->group_id = DEFAULT_GROUP;
00765
00766 v->SetFrontEngine();
00767 v->SetEngine();
00768
00769 VehicleUpdatePosition(v);
00770
00771 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00772 AddRearEngineToMultiheadedTrain(v);
00773 } else {
00774 AddArticulatedParts(v);
00775 }
00776
00777 v->ConsistChanged(false);
00778 UpdateTrainGroupID(v);
00779
00780 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00781 NormalizeTrainVehInDepot(v);
00782 }
00783
00784 CheckConsistencyOfArticulatedVehicle(v);
00785 }
00786
00787 return CommandCost();
00788 }
00789
00790 static Train *FindGoodVehiclePos(const Train *src)
00791 {
00792 EngineID eng = src->engine_type;
00793 TileIndex tile = src->tile;
00794
00795 Train *dst;
00796 FOR_ALL_TRAINS(dst) {
00797 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00798
00799 Train *t = dst;
00800 while (t->engine_type == eng) {
00801 t = t->Next();
00802 if (t == NULL) return dst;
00803 }
00804 }
00805 }
00806
00807 return NULL;
00808 }
00809
00811 typedef SmallVector<Train *, 16> TrainList;
00812
00818 static void MakeTrainBackup(TrainList &list, Train *t)
00819 {
00820 for (; t != NULL; t = t->Next()) *list.Append() = t;
00821 }
00822
00827 static void RestoreTrainBackup(TrainList &list)
00828 {
00829
00830 if (list.Length() == 0) return;
00831
00832 Train *prev = NULL;
00833
00834 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00835 Train *t = *iter;
00836 if (prev != NULL) {
00837 prev->SetNext(t);
00838 } else if (t->Previous() != NULL) {
00839
00840 t->Previous()->SetNext(NULL);
00841 }
00842 prev = t;
00843 }
00844 }
00845
00851 static void RemoveFromConsist(Train *part, bool chain = false)
00852 {
00853 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00854
00855
00856
00857 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00858
00859
00860 tail->SetNext(NULL);
00861 }
00862
00868 static void InsertInConsist(Train *dst, Train *chain)
00869 {
00870
00871 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00872
00873 chain->Last()->SetNext(dst->Next());
00874 dst->SetNext(chain);
00875 }
00876
00882 static void NormaliseDualHeads(Train *t)
00883 {
00884 for (; t != NULL; t = t->GetNextVehicle()) {
00885 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00886
00887
00888 Train *u;
00889 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00890
00891 if (u == t->other_multiheaded_part) continue;
00892
00893
00894 RemoveFromConsist(t->other_multiheaded_part);
00895
00896 InsertInConsist(u, t->other_multiheaded_part);
00897 }
00898 }
00899
00904 static void NormaliseSubtypes(Train *chain)
00905 {
00906
00907 if (chain == NULL) return;
00908
00909
00910 assert(chain->Previous() == NULL);
00911
00912
00913 if (chain->IsWagon()) {
00914 chain->SetFreeWagon();
00915 } else {
00916 assert(chain->IsEngine());
00917 chain->SetFrontEngine();
00918 }
00919
00920
00921 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00922 t->ClearFreeWagon();
00923 t->ClearFrontEngine();
00924 }
00925 }
00926
00936 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00937 {
00938
00939
00940
00941 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00942 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00943 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00944 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00945 return CommandCost();
00946 }
00947
00948
00949
00950 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00951
00952 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00953 }
00954
00960 static CommandCost CheckTrainAttachment(Train *t)
00961 {
00962
00963 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00964
00965
00966
00967 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00968
00969 Train *head = t;
00970 Train *prev = t;
00971
00972
00973 t = t->Next();
00974 prev->SetNext(NULL);
00975
00976
00977 head->InvalidateNewGRFCache();
00978
00979 while (t != NULL) {
00980 allowed_len -= t->gcache.cached_veh_length;
00981
00982 Train *next = t->Next();
00983
00984
00985
00986 t->SetNext(NULL);
00987
00988
00989 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00990
00991 EngineID first_engine = t->gcache.first_engine;
00992 t->gcache.first_engine = INVALID_ENGINE;
00993
00994
00995
00996 t->InvalidateNewGRFCache();
00997
00998 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00999
01000
01001 t->gcache.first_engine = first_engine;
01002
01003
01004 t->InvalidateNewGRFCache();
01005 head->InvalidateNewGRFCache();
01006
01007 if (callback != CALLBACK_FAILED) {
01008
01009 StringID error = STR_NULL;
01010
01011 if (head->GetGRF()->grf_version < 8) {
01012 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01013 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01014 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
01015 } else {
01016 if (callback < 0x400) {
01017 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
01018 } else {
01019 switch (callback) {
01020 case 0x400:
01021 case 0x401:
01022 break;
01023
01024 default:
01025 case 0x402:
01026 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01027 break;
01028 }
01029 }
01030 }
01031
01032 if (error != STR_NULL) return_cmd_error(error);
01033 }
01034 }
01035
01036
01037 prev->SetNext(t);
01038 prev = t;
01039 t = next;
01040 }
01041
01042 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01043 return CommandCost();
01044 }
01045
01056 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01057 {
01058
01059 CommandCost ret = CheckTrainAttachment(src);
01060 if (ret.Failed()) return ret;
01061 ret = CheckTrainAttachment(dst);
01062 if (ret.Failed()) return ret;
01063
01064
01065 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01066 }
01067
01076 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01077 {
01078
01079 if (*src_head == *dst_head) {
01080
01081
01082 *dst_head = NULL;
01083 } else if (*dst_head == NULL) {
01084
01085
01086 *dst_head = src;
01087 }
01088
01089 if (src == *src_head) {
01090
01091
01092
01093
01094
01095
01096 *src_head = move_chain ? NULL :
01097 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01098 }
01099
01100
01101
01102
01103 RemoveFromConsist(src, move_chain);
01104 if (*dst_head != src) InsertInConsist(dst, src);
01105
01106
01107
01108 NormaliseDualHeads(*src_head);
01109 NormaliseDualHeads(*dst_head);
01110 }
01111
01117 static void NormaliseTrainHead(Train *head)
01118 {
01119
01120 if (head == NULL) return;
01121
01122
01123 head->ConsistChanged(false);
01124 UpdateTrainGroupID(head);
01125
01126
01127 if (!head->IsFrontEngine()) return;
01128
01129
01130 InvalidateWindowData(WC_VEHICLE_REFIT, head->index, VIWD_CONSIST_CHANGED);
01131 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01132
01133
01134 if (head->unitnumber != 0) return;
01135 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01136 }
01137
01150 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01151 {
01152 VehicleID s = GB(p1, 0, 20);
01153 VehicleID d = GB(p2, 0, 20);
01154 bool move_chain = HasBit(p1, 20);
01155
01156 Train *src = Train::GetIfValid(s);
01157 if (src == NULL) return CMD_ERROR;
01158
01159 CommandCost ret = CheckOwnership(src->owner);
01160 if (ret.Failed()) return ret;
01161
01162
01163 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01164
01165
01166 Train *dst;
01167 if (d == INVALID_VEHICLE) {
01168 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01169 } else {
01170 dst = Train::GetIfValid(d);
01171 if (dst == NULL) return CMD_ERROR;
01172
01173 CommandCost ret = CheckOwnership(dst->owner);
01174 if (ret.Failed()) return ret;
01175
01176
01177 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01178 }
01179
01180
01181 src = src->GetFirstEnginePart();
01182 if (dst != NULL) {
01183 dst = dst->GetFirstEnginePart();
01184 }
01185
01186
01187 if (src == dst) return CommandCost();
01188
01189
01190 Train *src_head = src->First();
01191 Train *dst_head;
01192 if (dst != NULL) {
01193 dst_head = dst->First();
01194 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01195
01196 dst = dst->GetLastEnginePart();
01197 } else {
01198 dst_head = NULL;
01199 }
01200
01201 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01202
01203
01204 if (move_chain && src_head == dst_head) return CommandCost();
01205
01206
01207 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01208
01209
01210 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01211
01212
01213 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01214
01215
01216
01217 TrainList original_src;
01218 TrainList original_dst;
01219
01220 MakeTrainBackup(original_src, src_head);
01221 MakeTrainBackup(original_dst, dst_head);
01222
01223
01224
01225
01226 Train *original_src_head = src_head;
01227 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01228
01229
01230
01231
01232 bool original_src_head_front_engine = original_src_head->IsFrontEngine();
01233 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01234
01235
01236 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01237
01238 if ((flags & DC_AUTOREPLACE) == 0) {
01239
01240
01241
01242 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01243 if (ret.Failed()) {
01244
01245 RestoreTrainBackup(original_src);
01246 RestoreTrainBackup(original_dst);
01247 return ret;
01248 }
01249 }
01250
01251
01252 if (flags & DC_EXEC) {
01253
01254 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01255 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01256
01257
01258 NormaliseSubtypes(src_head);
01259 NormaliseSubtypes(dst_head);
01260
01261
01262
01263
01264
01265
01266
01267
01268
01269
01270
01271
01272
01273
01274
01275
01276
01277
01278
01279
01280
01281 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01282
01283 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01284 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01285 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01286 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01287 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01288 DeleteNewGRFInspectWindow(GSF_TRAINS, src->index);
01289 SetWindowDirty(WC_COMPANY, _current_company);
01290
01291
01292
01293 DeleteVehicleOrders(src);
01294 RemoveVehicleFromGroup(src);
01295 src->unitnumber = 0;
01296 }
01297
01298
01299
01300 if (original_src_head != src && dst_head == src) {
01301 SetTrainGroupID(src, DEFAULT_GROUP);
01302 SetWindowDirty(WC_COMPANY, _current_company);
01303 }
01304
01305
01306 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01307 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01308
01309
01310 NormaliseTrainHead(src_head);
01311 NormaliseTrainHead(dst_head);
01312
01313 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01314 CheckCargoCapacity(src_head);
01315 CheckCargoCapacity(dst_head);
01316 }
01317
01318 if (src_head != NULL) src_head->First()->MarkDirty();
01319 if (dst_head != NULL) dst_head->First()->MarkDirty();
01320
01321
01322 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01323 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01324 } else {
01325
01326 RestoreTrainBackup(original_src);
01327 RestoreTrainBackup(original_dst);
01328 }
01329
01330 return CommandCost();
01331 }
01332
01344 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01345 {
01346
01347 bool sell_chain = HasBit(data, 0);
01348
01349 Train *v = Train::From(t)->GetFirstEnginePart();
01350 Train *first = v->First();
01351
01352 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01353
01354
01355
01356 TrainList original;
01357 MakeTrainBackup(original, first);
01358
01359
01360 Train *new_head = first;
01361 Train *sell_head = NULL;
01362
01363
01364 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01365
01366
01367 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01368 if (ret.Failed()) {
01369
01370 RestoreTrainBackup(original);
01371 return ret;
01372 }
01373
01374 CommandCost cost(EXPENSES_NEW_VEHICLES);
01375 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01376
01377 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01378 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01379 }
01380
01381
01382 if (flags & DC_EXEC) {
01383
01384 NormaliseSubtypes(new_head);
01385
01386 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01387
01388
01389 new_head->orders.list = first->orders.list;
01390 new_head->AddToShared(first);
01391 DeleteVehicleOrders(first);
01392
01393
01394 new_head->CopyVehicleConfigAndStatistics(first);
01395 GroupStatistics::CountVehicle(new_head, 1);
01396 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01397 OrderBackup::Backup(v, user);
01398 }
01399
01400
01401 NormaliseTrainHead(new_head);
01402
01403
01404 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01405 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01406
01407
01408 delete sell_head;
01409 } else {
01410
01411 RestoreTrainBackup(original);
01412 }
01413
01414 return cost;
01415 }
01416
01417 void Train::UpdateDeltaXY(Direction direction)
01418 {
01419
01420 this->x_offs = -1;
01421 this->y_offs = -1;
01422 this->x_extent = 3;
01423 this->y_extent = 3;
01424 this->z_extent = 6;
01425 this->x_bb_offs = 0;
01426 this->y_bb_offs = 0;
01427
01428 if (!IsDiagonalDirection(direction)) {
01429 static const int _sign_table[] =
01430 {
01431
01432 -1, -1,
01433 -1, 1,
01434 1, 1,
01435 1, -1,
01436 };
01437
01438 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01439
01440
01441 this->x_offs -= half_shorten * _sign_table[direction];
01442 this->y_offs -= half_shorten * _sign_table[direction + 1];
01443 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01444 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01445 } else {
01446 switch (direction) {
01447
01448
01449 case DIR_NE:
01450 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01451 this->x_extent = this->gcache.cached_veh_length - 1;
01452 this->x_bb_offs = -1;
01453 break;
01454
01455 case DIR_NW:
01456 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01457 this->y_extent = this->gcache.cached_veh_length - 1;
01458 this->y_bb_offs = -1;
01459 break;
01460
01461
01462
01463 case DIR_SW:
01464 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01465 this->x_extent = VEHICLE_LENGTH - 1;
01466 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01467 break;
01468
01469 case DIR_SE:
01470 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01471 this->y_extent = VEHICLE_LENGTH - 1;
01472 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01473 break;
01474
01475 default:
01476 NOT_REACHED();
01477 }
01478 }
01479 }
01480
01485 static void MarkTrainAsStuck(Train *v)
01486 {
01487 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01488
01489 SetBit(v->flags, VRF_TRAIN_STUCK);
01490
01491 v->wait_counter = 0;
01492
01493
01494 v->cur_speed = 0;
01495 v->subspeed = 0;
01496 v->SetLastSpeed();
01497
01498 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01499 }
01500 }
01501
01509 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01510 {
01511 uint16 flag1 = *swap_flag1;
01512 uint16 flag2 = *swap_flag2;
01513
01514
01515 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01516 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01517 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01518 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01519
01520
01521 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01522 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01523 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01524 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01525 }
01526 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01527 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01528 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01529 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01530 }
01531 }
01532
01537 static void UpdateStatusAfterSwap(Train *v)
01538 {
01539
01540 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01541
01542
01543 if (v->track != TRACK_BIT_WORMHOLE) {
01544 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01545 } else {
01546
01547
01548
01549
01550 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01551 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01552 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01553 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01554
01555
01556
01557 VehicleUpdatePosition(v);
01558 v->UpdateInclination(true, true);
01559 return;
01560 }
01561 }
01562 }
01563
01564 VehicleUpdatePosition(v);
01565 v->UpdateViewport(true, true);
01566 }
01567
01574 void ReverseTrainSwapVeh(Train *v, int l, int r)
01575 {
01576 Train *a, *b;
01577
01578
01579 for (a = v; l != 0; l--) a = a->Next();
01580 for (b = v; r != 0; r--) b = b->Next();
01581
01582 if (a != b) {
01583
01584 {
01585 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01586 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01587 a->vehstatus = tmp;
01588 }
01589
01590 Swap(a->track, b->track);
01591 Swap(a->direction, b->direction);
01592 Swap(a->x_pos, b->x_pos);
01593 Swap(a->y_pos, b->y_pos);
01594 Swap(a->tile, b->tile);
01595 Swap(a->z_pos, b->z_pos);
01596
01597 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01598
01599 UpdateStatusAfterSwap(a);
01600 UpdateStatusAfterSwap(b);
01601 } else {
01602
01603
01604
01605 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01606 UpdateStatusAfterSwap(a);
01607 }
01608 }
01609
01610
01616 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01617 {
01618 return (v->type == VEH_TRAIN) ? v : NULL;
01619 }
01620
01621
01628 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01629 {
01630 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01631
01632 Train *t = Train::From(v);
01633 if (!t->IsFrontEngine()) return NULL;
01634
01635 TileIndex tile = *(TileIndex *)data;
01636
01637 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01638
01639 return t;
01640 }
01641
01642
01649 static bool TrainApproachingCrossing(TileIndex tile)
01650 {
01651 assert(IsLevelCrossingTile(tile));
01652
01653 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01654 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01655
01656 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01657
01658 dir = ReverseDiagDir(dir);
01659 tile_from = tile + TileOffsByDiagDir(dir);
01660
01661 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01662 }
01663
01664
01671 void UpdateLevelCrossing(TileIndex tile, bool sound)
01672 {
01673 assert(IsLevelCrossingTile(tile));
01674
01675
01676 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01677
01678 if (new_state != IsCrossingBarred(tile)) {
01679 if (new_state && sound) {
01680 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01681 }
01682 SetCrossingBarred(tile, new_state);
01683 MarkTileDirtyByTile(tile);
01684 }
01685 }
01686
01687
01693 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01694 {
01695 if (!IsCrossingBarred(tile)) {
01696 BarCrossing(tile);
01697 if (_settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01698 MarkTileDirtyByTile(tile);
01699 }
01700 }
01701
01702
01708 static void AdvanceWagonsBeforeSwap(Train *v)
01709 {
01710 Train *base = v;
01711 Train *first = base;
01712 Train *last = v->Last();
01713 uint length = CountVehiclesInChain(v);
01714
01715 while (length > 2) {
01716 last = last->Previous();
01717 first = first->Next();
01718
01719 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01720
01721
01722
01723 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01724
01725 base = first;
01726 length -= 2;
01727 }
01728 }
01729
01730
01736 static void AdvanceWagonsAfterSwap(Train *v)
01737 {
01738
01739 Train *dep = v;
01740 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01741 dep = dep->Next();
01742 }
01743
01744 Train *leave = dep->Next();
01745
01746 if (leave != NULL) {
01747
01748 int d = TicksToLeaveDepot(dep);
01749
01750 if (d <= 0) {
01751 leave->vehstatus &= ~VS_HIDDEN;
01752 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01753 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01754 }
01755 } else {
01756 dep = NULL;
01757 }
01758
01759 Train *base = v;
01760 Train *first = base;
01761 Train *last = v->Last();
01762 uint length = CountVehiclesInChain(v);
01763
01764
01765
01766 bool nomove = (dep == NULL);
01767
01768 while (length > 2) {
01769
01770
01771 if (base == dep) break;
01772
01773
01774 if (last == dep) nomove = true;
01775
01776 last = last->Previous();
01777 first = first->Next();
01778
01779 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01780
01781
01782 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01783
01784 base = first;
01785 length -= 2;
01786 }
01787 }
01788
01793 void ReverseTrainDirection(Train *v)
01794 {
01795 if (IsRailDepotTile(v->tile)) {
01796 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01797 }
01798
01799
01800 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01801
01802
01803 TileIndex crossing = TrainApproachingCrossingTile(v);
01804
01805
01806 int r = CountVehiclesInChain(v) - 1;
01807
01808 AdvanceWagonsBeforeSwap(v);
01809
01810
01811 int l = 0;
01812 do {
01813 ReverseTrainSwapVeh(v, l++, r--);
01814 } while (l <= r);
01815
01816 AdvanceWagonsAfterSwap(v);
01817
01818 if (IsRailDepotTile(v->tile)) {
01819 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01820 }
01821
01822 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01823
01824 ClrBit(v->flags, VRF_REVERSING);
01825
01826
01827 v->ConsistChanged(true);
01828
01829
01830 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01831
01832
01833 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01834
01835
01836 crossing = TrainApproachingCrossingTile(v);
01837 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01838
01839
01840 if (v->track == TRACK_BIT_DEPOT) {
01841
01842 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01843 ClrBit(v->flags, VRF_TRAIN_STUCK);
01844 return;
01845 }
01846
01847
01848
01849 DiagDirection dir = TrainExitDir(v->direction, v->track);
01850 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01851
01852 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01853
01854
01855 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01856 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01857 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01858
01859
01860 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01861
01862 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01863 if (TryPathReserve(v, false, first_tile_okay)) {
01864
01865 CheckNextTrainTile(v);
01866 } else if (v->current_order.GetType() != OT_LOADING) {
01867
01868 MarkTrainAsStuck(v);
01869 }
01870 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01871
01872 ClrBit(v->flags, VRF_TRAIN_STUCK);
01873 v->wait_counter = 0;
01874 }
01875 }
01876
01886 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01887 {
01888 Train *v = Train::GetIfValid(p1);
01889 if (v == NULL) return CMD_ERROR;
01890
01891 CommandCost ret = CheckOwnership(v->owner);
01892 if (ret.Failed()) return ret;
01893
01894 if (p2 != 0) {
01895
01896
01897 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01898 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01899 }
01900 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01901
01902 Train *front = v->First();
01903
01904 if (!front->IsStoppedInDepot()) {
01905 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01906 }
01907
01908 if (flags & DC_EXEC) {
01909 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01910
01911 front->ConsistChanged(false);
01912 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01913 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01914 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01915 SetWindowClassesDirty(WC_TRAINS_LIST);
01916 }
01917 } else {
01918
01919 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01920
01921 if (flags & DC_EXEC) {
01922
01923 if (v->current_order.IsType(OT_LOADING)) {
01924 const Vehicle *last = v;
01925 while (last->Next() != NULL) last = last->Next();
01926
01927
01928 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01929 v->LeaveStation();
01930 }
01931 }
01932
01933
01934 v->force_proceed = TFP_NONE;
01935 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01936
01937 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01938 ToggleBit(v->flags, VRF_REVERSING);
01939 } else {
01940 v->cur_speed = 0;
01941 v->SetLastSpeed();
01942 HideFillingPercent(&v->fill_percent_te_id);
01943 ReverseTrainDirection(v);
01944 }
01945 }
01946 }
01947 return CommandCost();
01948 }
01949
01959 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01960 {
01961 Train *t = Train::GetIfValid(p1);
01962 if (t == NULL) return CMD_ERROR;
01963
01964 if (!t->IsPrimaryVehicle()) return CMD_ERROR;
01965
01966 CommandCost ret = CheckOwnership(t->owner);
01967 if (ret.Failed()) return ret;
01968
01969
01970 if (flags & DC_EXEC) {
01971
01972
01973
01974
01975
01976 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsChainInDepot() ? TFP_STUCK : TFP_SIGNAL;
01977 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01978 }
01979
01980 return CommandCost();
01981 }
01982
01990 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01991 {
01992 assert(!(v->vehstatus & VS_CRASHED));
01993
01994 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01995
01996 PBSTileInfo origin = FollowTrainReservation(v);
01997 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01998
01999 switch (_settings_game.pf.pathfinder_for_trains) {
02000 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
02001 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
02002
02003 default: NOT_REACHED();
02004 }
02005 }
02006
02014 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02015 {
02016 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02017 if (tfdd.best_length == UINT_MAX) return false;
02018
02019 if (location != NULL) *location = tfdd.tile;
02020 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02021 if (reverse != NULL) *reverse = tfdd.reverse;
02022
02023 return true;
02024 }
02025
02027 void Train::PlayLeaveStationSound() const
02028 {
02029 static const SoundFx sfx[] = {
02030 SND_04_TRAIN,
02031 SND_0A_TRAIN_HORN,
02032 SND_0A_TRAIN_HORN,
02033 SND_47_MAGLEV_2,
02034 SND_41_MAGLEV
02035 };
02036
02037 if (PlayVehicleSound(this, VSE_START)) return;
02038
02039 EngineID engtype = this->engine_type;
02040 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02041 }
02042
02047 static void CheckNextTrainTile(Train *v)
02048 {
02049
02050 if (_settings_game.pf.path_backoff_interval == 255) return;
02051
02052
02053 if (v->track == TRACK_BIT_DEPOT) return;
02054
02055 switch (v->current_order.GetType()) {
02056
02057 case OT_GOTO_DEPOT:
02058 if (v->tile == v->dest_tile) return;
02059 break;
02060
02061 case OT_GOTO_WAYPOINT:
02062
02063 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02064 break;
02065
02066 case OT_NOTHING:
02067 case OT_LEAVESTATION:
02068 case OT_LOADING:
02069
02070 if (v->GetNumOrders() > 0) return;
02071 break;
02072
02073 default:
02074 break;
02075 }
02076
02077 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02078
02079 Trackdir td = v->GetVehicleTrackdir();
02080
02081
02082 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02083 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02084 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02085
02086 CFollowTrackRail ft(v);
02087 if (!ft.Follow(v->tile, td)) return;
02088
02089 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02090
02091 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02092 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02093
02094 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02095 if (_settings_game.pf.forbid_90_deg) {
02096 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02097 }
02098 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02099 }
02100 }
02101 }
02102 }
02103
02109 static bool CheckTrainStayInDepot(Train *v)
02110 {
02111
02112 for (const Train *u = v; u != NULL; u = u->Next()) {
02113 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02114 }
02115
02116
02117 if (v->gcache.cached_power == 0) {
02118 v->vehstatus |= VS_STOPPED;
02119 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02120 return true;
02121 }
02122
02123 SigSegState seg_state;
02124
02125 if (v->force_proceed == TFP_NONE) {
02126
02127 if (++v->wait_counter < 37) {
02128 SetWindowClassesDirty(WC_TRAINS_LIST);
02129 return true;
02130 }
02131
02132 v->wait_counter = 0;
02133
02134 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02135 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02136
02137 SetWindowClassesDirty(WC_TRAINS_LIST);
02138 return true;
02139 }
02140 } else {
02141 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02142 }
02143
02144
02145 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02146
02147 if (HasDepotReservation(v->tile)) return true;
02148 SetDepotReservation(v->tile, true);
02149 VehicleEnterDepot(v);
02150 return true;
02151 }
02152
02153
02154 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02155
02156 SetWindowClassesDirty(WC_TRAINS_LIST);
02157 MarkTrainAsStuck(v);
02158 return true;
02159 }
02160
02161 SetDepotReservation(v->tile, true);
02162 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02163
02164 VehicleServiceInDepot(v);
02165 SetWindowClassesDirty(WC_TRAINS_LIST);
02166 v->PlayLeaveStationSound();
02167
02168 v->track = TRACK_BIT_X;
02169 if (v->direction & 2) v->track = TRACK_BIT_Y;
02170
02171 v->vehstatus &= ~VS_HIDDEN;
02172 v->cur_speed = 0;
02173
02174 v->UpdateViewport(true, true);
02175 VehicleUpdatePosition(v);
02176 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02177 v->UpdateAcceleration();
02178 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02179
02180 return false;
02181 }
02182
02189 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02190 {
02191 DiagDirection dir = TrackdirToExitdir(track_dir);
02192
02193 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02194
02195 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02196 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02197
02198 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02199
02200 SetTunnelBridgeReservation(tile, false);
02201 SetTunnelBridgeReservation(end, false);
02202
02203 if (_settings_client.gui.show_track_reservation) {
02204 MarkTileDirtyByTile(tile);
02205 MarkTileDirtyByTile(end);
02206 }
02207 }
02208 }
02209 } else if (IsRailStationTile(tile)) {
02210 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02211
02212
02213 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02214 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02215 }
02216 } else {
02217
02218 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02219 }
02220 }
02221
02228 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02229 {
02230 assert(v->IsFrontEngine());
02231
02232 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02233 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02234 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02235 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02236
02237
02238 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02239 if (v->track == TRACK_BIT_DEPOT) {
02240
02241 for (const Train *u = v; u != NULL; u = u->Next()) {
02242 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02243 }
02244 }
02245
02246 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02247
02248 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02249 while (ft.Follow(tile, td)) {
02250 tile = ft.m_new_tile;
02251 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02252 td = RemoveFirstTrackdir(&bits);
02253 assert(bits == TRACKDIR_BIT_NONE);
02254
02255 if (!IsValidTrackdir(td)) break;
02256
02257 if (IsTileType(tile, MP_RAILWAY)) {
02258 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02259
02260 UnreserveRailTrack(tile, TrackdirToTrack(td));
02261 break;
02262 }
02263 if (HasPbsSignalOnTrackdir(tile, td)) {
02264 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02265
02266 break;
02267 } else {
02268
02269 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02270 MarkTileDirtyByTile(tile);
02271 }
02272 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02273 break;
02274 }
02275 }
02276
02277
02278 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);
02279
02280 free_tile = true;
02281 }
02282 }
02283
02284 static const byte _initial_tile_subcoord[6][4][3] = {
02285 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02286 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02287 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02288 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02289 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02290 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02291 };
02292
02305 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02306 {
02307 switch (_settings_game.pf.pathfinder_for_trains) {
02308 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02309 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02310
02311 default: NOT_REACHED();
02312 }
02313 }
02314
02320 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02321 {
02322 PBSTileInfo origin = FollowTrainReservation(v);
02323
02324 CFollowTrackRail ft(v);
02325
02326 TileIndex tile = origin.tile;
02327 Trackdir cur_td = origin.trackdir;
02328 while (ft.Follow(tile, cur_td)) {
02329 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02330
02331 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02332 }
02333
02334 if (_settings_game.pf.forbid_90_deg) {
02335 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02336 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02337 }
02338
02339
02340 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02341 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02342
02343
02344
02345
02346
02347
02348 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02349
02350
02351
02352 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02353
02354
02355 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02356 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02357 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02358 }
02359
02360 tile = ft.m_new_tile;
02361 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02362
02363 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02364 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02365 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02366
02367 return PBSTileInfo(tile, cur_td, true);
02368 }
02369
02370 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02371 }
02372
02373 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02374
02375 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02376 }
02377
02378
02379 tile = origin.tile;
02380 cur_td = origin.trackdir;
02381 TileIndex stopped = ft.m_old_tile;
02382 Trackdir stopped_td = ft.m_old_td;
02383 while (tile != stopped || cur_td != stopped_td) {
02384 if (!ft.Follow(tile, cur_td)) break;
02385
02386 if (_settings_game.pf.forbid_90_deg) {
02387 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02388 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02389 }
02390 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02391
02392 tile = ft.m_new_tile;
02393 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02394
02395 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02396 }
02397
02398
02399 return PBSTileInfo();
02400 }
02401
02412 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02413 {
02414 switch (_settings_game.pf.pathfinder_for_trains) {
02415 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02416 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02417
02418 default: NOT_REACHED();
02419 }
02420 }
02421
02423 class VehicleOrderSaver {
02424 private:
02425 Train *v;
02426 Order old_order;
02427 TileIndex old_dest_tile;
02428 StationID old_last_station_visited;
02429 VehicleOrderID index;
02430 bool suppress_implicit_orders;
02431
02432 public:
02433 VehicleOrderSaver(Train *_v) :
02434 v(_v),
02435 old_order(_v->current_order),
02436 old_dest_tile(_v->dest_tile),
02437 old_last_station_visited(_v->last_station_visited),
02438 index(_v->cur_real_order_index),
02439 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02440 {
02441 }
02442
02443 ~VehicleOrderSaver()
02444 {
02445 this->v->current_order = this->old_order;
02446 this->v->dest_tile = this->old_dest_tile;
02447 this->v->last_station_visited = this->old_last_station_visited;
02448 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02449 }
02450
02456 bool SwitchToNextOrder(bool skip_first)
02457 {
02458 if (this->v->GetNumOrders() == 0) return false;
02459
02460 if (skip_first) ++this->index;
02461
02462 int depth = 0;
02463
02464 do {
02465
02466 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02467
02468 Order *order = this->v->GetOrder(this->index);
02469 assert(order != NULL);
02470
02471 switch (order->GetType()) {
02472 case OT_GOTO_DEPOT:
02473
02474 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02475 case OT_GOTO_STATION:
02476 case OT_GOTO_WAYPOINT:
02477 this->v->current_order = *order;
02478 return UpdateOrderDest(this->v, order, 0, true);
02479 case OT_CONDITIONAL: {
02480 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02481 if (next != INVALID_VEH_ORDER_ID) {
02482 depth++;
02483 this->index = next;
02484
02485 continue;
02486 }
02487 break;
02488 }
02489 default:
02490 break;
02491 }
02492
02493
02494 ++this->index;
02495 depth++;
02496 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02497
02498 return false;
02499 }
02500 };
02501
02502
02503 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02504 {
02505 Track best_track = INVALID_TRACK;
02506 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02507 bool changed_signal = false;
02508
02509 assert((tracks & ~TRACK_BIT_MASK) == 0);
02510
02511 if (got_reservation != NULL) *got_reservation = false;
02512
02513
02514 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02515
02516 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02517
02518
02519 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02520 Track track = FindFirstTrack(tracks);
02521
02522 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02523 do_track_reservation = true;
02524 changed_signal = true;
02525 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02526 } else if (!do_track_reservation) {
02527 return track;
02528 }
02529 best_track = track;
02530 }
02531
02532 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02533 DiagDirection dest_enterdir = enterdir;
02534 if (do_track_reservation) {
02535 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02536 if (res_dest.tile == INVALID_TILE) {
02537
02538 if (mark_stuck) MarkTrainAsStuck(v);
02539 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02540 return FindFirstTrack(tracks);
02541 }
02542 if (res_dest.okay) {
02543
02544 if (got_reservation != NULL) *got_reservation = true;
02545 if (changed_signal) MarkTileDirtyByTile(tile);
02546 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02547 return best_track;
02548 }
02549
02550
02551
02552
02553 CheckIfTrainNeedsService(v);
02554 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02555 }
02556
02557
02558 VehicleOrderSaver orders(v);
02559
02560
02561
02562
02563
02564
02565
02566 if (v->current_order.IsType(OT_LEAVESTATION)) {
02567 orders.SwitchToNextOrder(false);
02568 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02569 v->current_order.IsType(OT_GOTO_STATION) ?
02570 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02571 v->tile == v->dest_tile))) {
02572 orders.SwitchToNextOrder(true);
02573 }
02574
02575 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02576
02577 bool path_found = true;
02578 TileIndex new_tile = res_dest.tile;
02579
02580 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02581 if (new_tile == tile) best_track = next_track;
02582 v->HandlePathfindingResult(path_found);
02583 }
02584
02585
02586 if (!do_track_reservation) return best_track;
02587
02588
02589 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02590 if (mark_stuck) MarkTrainAsStuck(v);
02591 FreeTrainTrackReservation(v);
02592 return best_track;
02593 }
02594
02595
02596 if (res_dest.tile == INVALID_TILE) {
02597
02598 PBSTileInfo origin = FollowTrainReservation(v);
02599 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02600 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02601 best_track = FindFirstTrack(res);
02602 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02603 if (got_reservation != NULL) *got_reservation = true;
02604 if (changed_signal) MarkTileDirtyByTile(tile);
02605 } else {
02606 FreeTrainTrackReservation(v);
02607 if (mark_stuck) MarkTrainAsStuck(v);
02608 }
02609 return best_track;
02610 }
02611
02612 if (got_reservation != NULL) *got_reservation = true;
02613
02614
02615 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02616
02617 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02618 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02619 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02620 if (_settings_game.pf.forbid_90_deg) {
02621 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02622 }
02623
02624
02625 if (orders.SwitchToNextOrder(true)) {
02626 PBSTileInfo cur_dest;
02627 bool path_found;
02628 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02629 if (cur_dest.tile != INVALID_TILE) {
02630 res_dest = cur_dest;
02631 if (res_dest.okay) continue;
02632
02633 FreeTrainTrackReservation(v);
02634 if (mark_stuck) MarkTrainAsStuck(v);
02635 if (got_reservation != NULL) *got_reservation = false;
02636 changed_signal = false;
02637 break;
02638 }
02639 }
02640
02641 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02642 FreeTrainTrackReservation(v);
02643 if (mark_stuck) MarkTrainAsStuck(v);
02644 if (got_reservation != NULL) *got_reservation = false;
02645 changed_signal = false;
02646 }
02647 break;
02648 }
02649
02650 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02651
02652 if (changed_signal) MarkTileDirtyByTile(tile);
02653
02654 return best_track;
02655 }
02656
02665 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02666 {
02667 assert(v->IsFrontEngine());
02668
02669
02670
02671
02672 if (v->track == TRACK_BIT_DEPOT) {
02673 if (HasDepotReservation(v->tile)) {
02674 if (mark_as_stuck) MarkTrainAsStuck(v);
02675 return false;
02676 } else {
02677
02678 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02679 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02680 }
02681 }
02682
02683 Vehicle *other_train = NULL;
02684 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02685
02686
02687
02688
02689
02690 if (other_train != NULL && other_train->index != v->index) {
02691 if (mark_as_stuck) MarkTrainAsStuck(v);
02692 return false;
02693 }
02694
02695 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02696
02697 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02698 ClrBit(v->flags, VRF_TRAIN_STUCK);
02699 return true;
02700 }
02701
02702
02703 if (v->track == TRACK_BIT_DEPOT) {
02704 SetDepotReservation(v->tile, true);
02705 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02706 }
02707
02708 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02709 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02710 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02711
02712 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02713
02714 bool res_made = false;
02715 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02716
02717 if (!res_made) {
02718
02719 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02720 return false;
02721 }
02722
02723 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02724 v->wait_counter = 0;
02725 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02726 }
02727 ClrBit(v->flags, VRF_TRAIN_STUCK);
02728 return true;
02729 }
02730
02731
02732 static bool CheckReverseTrain(const Train *v)
02733 {
02734 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02735 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02736 !(v->direction & 1)) {
02737 return false;
02738 }
02739
02740 assert(v->track != TRACK_BIT_NONE);
02741
02742 switch (_settings_game.pf.pathfinder_for_trains) {
02743 case VPF_NPF: return NPFTrainCheckReverse(v);
02744 case VPF_YAPF: return YapfTrainCheckReverse(v);
02745
02746 default: NOT_REACHED();
02747 }
02748 }
02749
02755 TileIndex Train::GetOrderStationLocation(StationID station)
02756 {
02757 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02758
02759 const Station *st = Station::Get(station);
02760 if (!(st->facilities & FACIL_TRAIN)) {
02761
02762 this->IncrementRealOrderIndex();
02763 return 0;
02764 }
02765
02766 return st->xy;
02767 }
02768
02770 void Train::MarkDirty()
02771 {
02772 Train *v = this;
02773 do {
02774 v->colourmap = PAL_NONE;
02775 v->UpdateViewport(true, false);
02776 } while ((v = v->Next()) != NULL);
02777
02778
02779 this->CargoChanged();
02780 this->UpdateAcceleration();
02781 }
02782
02790 int Train::UpdateSpeed()
02791 {
02792 switch (_settings_game.vehicle.train_acceleration_model) {
02793 default: NOT_REACHED();
02794 case AM_ORIGINAL:
02795 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, this->GetCurrentMaxSpeed());
02796
02797 case AM_REALISTIC:
02798 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02799 }
02800 }
02801
02807 static void TrainEnterStation(Train *v, StationID station)
02808 {
02809 v->last_station_visited = station;
02810
02811
02812 Station *st = Station::Get(station);
02813 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02814 st->had_vehicle_of_type |= HVOT_TRAIN;
02815 SetDParam(0, st->index);
02816 AddVehicleNewsItem(
02817 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02818 v->owner == _local_company ? NT_ARRIVAL_COMPANY : NT_ARRIVAL_OTHER,
02819 v->index,
02820 st->index
02821 );
02822 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02823 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02824 }
02825
02826 v->force_proceed = TFP_NONE;
02827 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02828
02829 v->BeginLoading();
02830
02831 TriggerStationRandomisation(st, v->tile, SRT_TRAIN_ARRIVES);
02832 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02833 }
02834
02835
02836 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02837 {
02838 return IsTileOwner(tile, v->owner) &&
02839 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02840 }
02841
02843 struct AccelerationSlowdownParams {
02844 byte small_turn;
02845 byte large_turn;
02846 byte z_up;
02847 byte z_down;
02848 };
02849
02851 static const AccelerationSlowdownParams _accel_slowdown[] = {
02852
02853 {256 / 4, 256 / 2, 256 / 4, 2},
02854 {256 / 4, 256 / 2, 256 / 4, 2},
02855 {0, 256 / 2, 256 / 4, 2},
02856 };
02857
02863 static inline void AffectSpeedByZChange(Train *v, int old_z)
02864 {
02865 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02866
02867 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02868
02869 if (old_z < v->z_pos) {
02870 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02871 } else {
02872 uint16 spd = v->cur_speed + asp->z_down;
02873 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02874 }
02875 }
02876
02877 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02878 {
02879 if (IsTileType(tile, MP_RAILWAY) &&
02880 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02881 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02882 Trackdir trackdir = FindFirstTrackdir(tracks);
02883 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02884
02885 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02886 }
02887 }
02888 return false;
02889 }
02890
02892 void Train::ReserveTrackUnderConsist() const
02893 {
02894 for (const Train *u = this; u != NULL; u = u->Next()) {
02895 switch (u->track) {
02896 case TRACK_BIT_WORMHOLE:
02897 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02898 break;
02899 case TRACK_BIT_DEPOT:
02900 break;
02901 default:
02902 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02903 break;
02904 }
02905 }
02906 }
02907
02914 uint Train::Crash(bool flooded)
02915 {
02916 uint pass = 0;
02917 if (this->IsFrontEngine()) {
02918 pass += 2;
02919
02920
02921
02922 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02923 for (const Train *v = this; v != NULL; v = v->Next()) {
02924 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02925 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02926
02927
02928 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02929 }
02930 }
02931
02932
02933
02934 TileIndex crossing = TrainApproachingCrossingTile(this);
02935 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02936
02937
02938 HideFillingPercent(&this->fill_percent_te_id);
02939 }
02940
02941 pass += this->GroundVehicleBase::Crash(flooded);
02942
02943 this->crash_anim_pos = flooded ? 4000 : 1;
02944 return pass;
02945 }
02946
02953 static uint TrainCrashed(Train *v)
02954 {
02955 uint num = 0;
02956
02957
02958 if (!(v->vehstatus & VS_CRASHED)) {
02959 num = v->Crash();
02960 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02961 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02962 }
02963
02964
02965
02966 v->ReserveTrackUnderConsist();
02967
02968 return num;
02969 }
02970
02972 struct TrainCollideChecker {
02973 Train *v;
02974 uint num;
02975 };
02976
02983 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02984 {
02985 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02986
02987
02988 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02989
02990
02991 if (v->owner != tcc->v->owner) return NULL;
02992
02993
02994 Train *coll = Train::From(v)->First();
02995
02996
02997 if (coll == tcc->v) return NULL;
02998
02999 int x_diff = v->x_pos - tcc->v->x_pos;
03000 int y_diff = v->y_pos - tcc->v->y_pos;
03001
03002
03003
03004
03005
03006 uint hash = (y_diff + 7) | (x_diff + 7);
03007 if (hash & ~15) return NULL;
03008
03009
03010 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
03011 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
03012
03013
03014 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03015
03016
03017 tcc->num += TrainCrashed(tcc->v);
03018 tcc->num += TrainCrashed(coll);
03019
03020 return NULL;
03021 }
03022
03030 static bool CheckTrainCollision(Train *v)
03031 {
03032
03033 if (v->track == TRACK_BIT_DEPOT) return false;
03034
03035 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03036
03037 TrainCollideChecker tcc;
03038 tcc.v = v;
03039 tcc.num = 0;
03040
03041
03042 if (v->track == TRACK_BIT_WORMHOLE) {
03043 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03044 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03045 } else {
03046 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03047 }
03048
03049
03050 if (tcc.num == 0) return false;
03051
03052 SetDParam(0, tcc.num);
03053 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH, NT_ACCIDENT, v->index);
03054
03055 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03056 if (_settings_client.sound.disaster) SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03057 return true;
03058 }
03059
03060 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03061 {
03062 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03063
03064 Train *t = Train::From(v);
03065 DiagDirection exitdir = *(DiagDirection *)data;
03066
03067
03068 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03069
03070 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03071
03072 return t;
03073 }
03074
03082 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03083 {
03084 Train *first = v->First();
03085 Train *prev;
03086 bool direction_changed = false;
03087
03088
03089 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03090 DiagDirection enterdir = DIAGDIR_BEGIN;
03091 bool update_signals_crossing = false;
03092
03093 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03094 if (v->track != TRACK_BIT_WORMHOLE) {
03095
03096 if (gp.old_tile == gp.new_tile) {
03097
03098 if (v->track == TRACK_BIT_DEPOT) {
03099
03100 gp.x = v->x_pos;
03101 gp.y = v->y_pos;
03102 } else {
03103
03104
03105
03106 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03107
03108 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03109 if (HasBit(r, VETS_CANNOT_ENTER)) {
03110 goto invalid_rail;
03111 }
03112 if (HasBit(r, VETS_ENTERED_STATION)) {
03113
03114 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03115 }
03116 }
03117 } else {
03118
03119
03120
03121 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03122 assert(IsValidDiagDirection(enterdir));
03123
03124
03125
03126 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03127 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03128
03129 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03130 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03131
03132 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03133 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03134
03135
03136 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03137 }
03138
03139 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03140
03141
03142
03143 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03144
03145 TrackBits chosen_track;
03146 if (prev == NULL) {
03147
03148
03149 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03150 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03151
03152 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03153
03154
03155
03156
03157 Trackdir dir = FindFirstTrackdir(trackdirbits);
03158 if (HasSignalOnTrackdir(gp.new_tile, dir) ||
03159 (HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir)) &&
03160 GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS)) {
03161
03162
03163 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03164 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03165 }
03166 }
03167
03168
03169 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03170
03171 Trackdir i = FindFirstTrackdir(trackdirbits);
03172
03173
03174 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03175
03176 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03177 v->cur_speed = 0;
03178 v->subspeed = 0;
03179 v->progress = 255 - 100;
03180 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03181 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03182 v->cur_speed = 0;
03183 v->subspeed = 0;
03184 v->progress = 255 - 10;
03185 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03186 DiagDirection exitdir = TrackdirToExitdir(i);
03187 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03188
03189 exitdir = ReverseDiagDir(exitdir);
03190
03191
03192 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03193 }
03194 }
03195
03196
03197
03198
03199
03200 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03201 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03202 v->wait_counter = 0;
03203 return false;
03204 }
03205 goto reverse_train_direction;
03206 } else {
03207 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track), false);
03208 }
03209 } else {
03210
03211 if (prev->tile == gp.new_tile) {
03212
03213 if (prev->track == TRACK_BIT_WORMHOLE) {
03214
03215
03216 assert(IsTunnel(prev->tile));
03217 chosen_track = bits;
03218 } else {
03219 chosen_track = prev->track;
03220 }
03221 } else {
03222
03223
03224
03225
03226
03227
03228
03229 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03230 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03231 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03232 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03233 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03234 };
03235 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03236 assert(IsValidDiagDirection(exitdir));
03237 chosen_track = _connecting_track[enterdir][exitdir];
03238 }
03239 chosen_track &= bits;
03240 }
03241
03242
03243 assert(
03244 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03245 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03246 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03247
03248
03249 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03250 gp.x = (gp.x & ~0xF) | b[0];
03251 gp.y = (gp.y & ~0xF) | b[1];
03252 Direction chosen_dir = (Direction)b[2];
03253
03254
03255 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03256 if (HasBit(r, VETS_CANNOT_ENTER)) {
03257 goto invalid_rail;
03258 }
03259
03260 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03261 Track track = FindFirstTrack(chosen_track);
03262 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03263 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03264 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03265 MarkTileDirtyByTile(gp.new_tile);
03266 }
03267
03268
03269 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03270
03271 v->tile = gp.new_tile;
03272
03273 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03274 v->First()->ConsistChanged(true);
03275 }
03276
03277 v->track = chosen_track;
03278 assert(v->track);
03279 }
03280
03281
03282
03283 update_signals_crossing = true;
03284
03285 if (chosen_dir != v->direction) {
03286 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03287 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03288 DirDiff diff = DirDifference(v->direction, chosen_dir);
03289 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03290 }
03291 direction_changed = true;
03292 v->direction = chosen_dir;
03293 }
03294
03295 if (v->IsFrontEngine()) {
03296 v->wait_counter = 0;
03297
03298
03299 TileIndex crossing = TrainApproachingCrossingTile(v);
03300 if (crossing != INVALID_TILE && HasCrossingReservation(crossing) && _settings_client.sound.ambient) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03301
03302
03303 CheckNextTrainTile(v);
03304 }
03305
03306 if (HasBit(r, VETS_ENTERED_STATION)) {
03307
03308 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03309 }
03310 }
03311 } else {
03312 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03313
03314 if (v->IsFrontEngine()) {
03315 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03316 CheckNextTrainTile(v);
03317 }
03318
03319
03320 if (gp.old_tile == gp.new_tile) {
03321 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03322 }
03323 } else {
03324 v->x_pos = gp.x;
03325 v->y_pos = gp.y;
03326 VehicleUpdatePosition(v);
03327 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03328 continue;
03329 }
03330 }
03331
03332
03333 v->UpdateDeltaXY(v->direction);
03334
03335 v->x_pos = gp.x;
03336 v->y_pos = gp.y;
03337 VehicleUpdatePosition(v);
03338
03339
03340 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03341
03342 if (prev == NULL) {
03343
03344 AffectSpeedByZChange(v, old_z);
03345 }
03346
03347 if (update_signals_crossing) {
03348 if (v->IsFrontEngine()) {
03349 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03350
03351
03352
03353
03354
03355
03356
03357
03358 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03359 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03360 !TryPathReserve(v)) {
03361 MarkTrainAsStuck(v);
03362 }
03363 }
03364 }
03365
03366
03367
03368 if (v->Next() == NULL) {
03369 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03370 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03371 }
03372 }
03373
03374
03375 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03376 }
03377
03378 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03379
03380 return true;
03381
03382 invalid_rail:
03383
03384 if (prev != NULL) error("Disconnecting train");
03385
03386 reverse_train_direction:
03387 if (reverse) {
03388 v->wait_counter = 0;
03389 v->cur_speed = 0;
03390 v->subspeed = 0;
03391 ReverseTrainDirection(v);
03392 }
03393
03394 return false;
03395 }
03396
03403 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03404 {
03405 TrackBits *trackbits = (TrackBits *)data;
03406
03407 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03408 TrackBits train_tbits = Train::From(v)->track;
03409 if (train_tbits == TRACK_BIT_WORMHOLE) {
03410
03411 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03412 } else if (train_tbits != TRACK_BIT_DEPOT) {
03413 *trackbits |= train_tbits;
03414 }
03415 }
03416
03417 return NULL;
03418 }
03419
03427 static void DeleteLastWagon(Train *v)
03428 {
03429 Train *first = v->First();
03430
03431
03432
03433
03434 Train *u = v;
03435 for (; v->Next() != NULL; v = v->Next()) u = v;
03436 u->SetNext(NULL);
03437
03438 if (first != v) {
03439
03440 first->ConsistChanged(false);
03441
03442
03443 if (first->track == TRACK_BIT_DEPOT) {
03444 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03445 }
03446 v->last_station_visited = first->last_station_visited;
03447 }
03448
03449
03450 TrackBits trackbits = v->track;
03451 TileIndex tile = v->tile;
03452 Owner owner = v->owner;
03453
03454 delete v;
03455 v = NULL;
03456
03457 if (trackbits == TRACK_BIT_WORMHOLE) {
03458
03459 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03460 }
03461
03462 Track track = TrackBitsToTrack(trackbits);
03463 if (HasReservedTracks(tile, trackbits)) {
03464 UnreserveRailTrack(tile, track);
03465
03466
03467 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03468 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03469
03470
03471 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03472 Track t;
03473 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03474 }
03475
03476
03477 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03478
03479
03480 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03481 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03482 } else {
03483 SetSignalsOnBothDir(tile, track, owner);
03484 }
03485 }
03486
03491 static void ChangeTrainDirRandomly(Train *v)
03492 {
03493 static const DirDiff delta[] = {
03494 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03495 };
03496
03497 do {
03498
03499 if (!(v->vehstatus & VS_HIDDEN)) {
03500 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03501 v->UpdateDeltaXY(v->direction);
03502 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03503
03504
03505
03506 if (v->track != TRACK_BIT_WORMHOLE) {
03507 VehicleUpdatePosition(v);
03508 v->UpdateInclination(false, false);
03509 }
03510 }
03511 } while ((v = v->Next()) != NULL);
03512 }
03513
03519 static bool HandleCrashedTrain(Train *v)
03520 {
03521 int state = ++v->crash_anim_pos;
03522
03523 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03524 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03525 }
03526
03527 uint32 r;
03528 if (state <= 200 && Chance16R(1, 7, r)) {
03529 int index = (r * 10 >> 16);
03530
03531 Vehicle *u = v;
03532 do {
03533 if (--index < 0) {
03534 r = Random();
03535
03536 CreateEffectVehicleRel(u,
03537 GB(r, 8, 3) + 2,
03538 GB(r, 16, 3) + 2,
03539 GB(r, 0, 3) + 5,
03540 EV_EXPLOSION_SMALL);
03541 break;
03542 }
03543 } while ((u = u->Next()) != NULL);
03544 }
03545
03546 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03547
03548 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03549 bool ret = v->Next() != NULL;
03550 DeleteLastWagon(v);
03551 return ret;
03552 }
03553
03554 return true;
03555 }
03556
03558 static const uint16 _breakdown_speeds[16] = {
03559 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03560 };
03561
03562
03571 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03572 {
03573
03574 uint x = v->x_pos & 0xF;
03575 uint y = v->y_pos & 0xF;
03576
03577
03578
03579 switch (v->direction) {
03580 case DIR_N : x = ~x + ~y + 25; break;
03581 case DIR_NW: x = y;
03582 case DIR_NE: x = ~x + 16; break;
03583 case DIR_E : x = ~x + y + 9; break;
03584 case DIR_SE: x = y; break;
03585 case DIR_S : x = x + y - 7; break;
03586 case DIR_W : x = ~y + x + 9; break;
03587 default: break;
03588 }
03589
03590
03591
03592
03593
03594
03595 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03596
03597 v->cur_speed = 0;
03598 if (reverse) ReverseTrainDirection(v);
03599 return false;
03600 }
03601
03602
03603 v->vehstatus |= VS_TRAIN_SLOWING;
03604 uint16 break_speed = _breakdown_speeds[x & 0xF];
03605 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03606
03607 return true;
03608 }
03609
03610
03616 static bool TrainCanLeaveTile(const Train *v)
03617 {
03618
03619 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03620
03621 TileIndex tile = v->tile;
03622
03623
03624 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03625 DiagDirection dir = GetTunnelBridgeDirection(tile);
03626 if (DiagDirToDir(dir) == v->direction) return false;
03627 }
03628
03629
03630 if (IsRailDepotTile(tile)) {
03631 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03632 if (DiagDirToDir(dir) == v->direction) return false;
03633 }
03634
03635 return true;
03636 }
03637
03638
03646 static TileIndex TrainApproachingCrossingTile(const Train *v)
03647 {
03648 assert(v->IsFrontEngine());
03649 assert(!(v->vehstatus & VS_CRASHED));
03650
03651 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03652
03653 DiagDirection dir = TrainExitDir(v->direction, v->track);
03654 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03655
03656
03657 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03658 !CheckCompatibleRail(v, tile)) {
03659 return INVALID_TILE;
03660 }
03661
03662 return tile;
03663 }
03664
03665
03673 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03674 {
03675
03676
03677 int t = v->breakdown_ctr;
03678 if (t > 1) {
03679 v->vehstatus |= VS_TRAIN_SLOWING;
03680
03681 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03682 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03683 } else {
03684 v->vehstatus &= ~VS_TRAIN_SLOWING;
03685 }
03686
03687 if (!TrainCanLeaveTile(v)) return true;
03688
03689
03690 DiagDirection dir = TrainExitDir(v->direction, v->track);
03691
03692 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03693
03694
03695 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03696 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03697
03698 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03699 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03700
03701
03702
03703
03704 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03705 if (_settings_game.pf.forbid_90_deg) {
03706 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03707 }
03708
03709
03710 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03711 return TrainApproachingLineEnd(v, false, reverse);
03712 }
03713
03714
03715 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03716
03717
03718 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03719
03720 return true;
03721 }
03722
03723
03724 static bool TrainLocoHandler(Train *v, bool mode)
03725 {
03726
03727 if (v->vehstatus & VS_CRASHED) {
03728 return mode ? true : HandleCrashedTrain(v);
03729 }
03730
03731 if (v->force_proceed != TFP_NONE) {
03732 ClrBit(v->flags, VRF_TRAIN_STUCK);
03733 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03734 }
03735
03736
03737 if (v->HandleBreakdown()) return true;
03738
03739 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03740 ReverseTrainDirection(v);
03741 }
03742
03743
03744 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03745
03746 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03747 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03748 v->wait_counter = 0;
03749 v->cur_speed = 0;
03750 v->subspeed = 0;
03751 ClrBit(v->flags, VRF_LEAVING_STATION);
03752 ReverseTrainDirection(v);
03753 return true;
03754 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03755
03756
03757
03758 DiagDirection dir = TrainExitDir(v->direction, v->track);
03759 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03760
03761 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03762 TryPathReserve(v, true, true);
03763 }
03764 ClrBit(v->flags, VRF_LEAVING_STATION);
03765 }
03766
03767 v->HandleLoading(mode);
03768
03769 if (v->current_order.IsType(OT_LOADING)) return true;
03770
03771 if (CheckTrainStayInDepot(v)) return true;
03772
03773 if (!mode) v->ShowVisualEffect();
03774
03775
03776 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03777 CheckNextTrainTile(v);
03778 }
03779
03780
03781 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03782 ++v->wait_counter;
03783
03784
03785 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03786
03787 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03788 if (!TryPathReserve(v)) {
03789
03790 if (turn_around) ReverseTrainDirection(v);
03791
03792 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03793
03794 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03795 SetDParam(0, v->index);
03796 AddVehicleAdviceNewsItem(STR_NEWS_TRAIN_IS_STUCK, v->index);
03797 }
03798 v->wait_counter = 0;
03799 }
03800
03801 if (v->force_proceed == TFP_NONE) return true;
03802 ClrBit(v->flags, VRF_TRAIN_STUCK);
03803 v->wait_counter = 0;
03804 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03805 }
03806 }
03807
03808 if (v->current_order.IsType(OT_LEAVESTATION)) {
03809 v->current_order.Free();
03810 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03811 return true;
03812 }
03813
03814 int j = v->UpdateSpeed();
03815
03816
03817 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03818
03819 v->force_proceed = TFP_NONE;
03820 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03821 }
03822
03823 int adv_spd = v->GetAdvanceDistance();
03824 if (j < adv_spd) {
03825
03826 if (v->cur_speed == 0) v->SetLastSpeed();
03827 } else {
03828 TrainCheckIfLineEnds(v);
03829
03830 for (;;) {
03831 j -= adv_spd;
03832 TrainController(v, NULL);
03833
03834 if (CheckTrainCollision(v)) break;
03835
03836 adv_spd = v->GetAdvanceDistance();
03837
03838
03839 if (j < adv_spd || v->cur_speed == 0) break;
03840
03841 OrderType order_type = v->current_order.GetType();
03842
03843 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03844 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03845 IsTileType(v->tile, MP_STATION) &&
03846 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03847 ProcessOrders(v);
03848 }
03849 }
03850 v->SetLastSpeed();
03851 }
03852
03853 for (Train *u = v; u != NULL; u = u->Next()) {
03854 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03855
03856 u->UpdateViewport(false, false);
03857 }
03858
03859 if (v->progress == 0) v->progress = j;
03860
03861 return true;
03862 }
03863
03868 Money Train::GetRunningCost() const
03869 {
03870 Money cost = 0;
03871 const Train *v = this;
03872
03873 do {
03874 const Engine *e = v->GetEngine();
03875 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03876
03877 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03878 if (cost_factor == 0) continue;
03879
03880
03881 if (v->IsMultiheaded()) cost_factor /= 2;
03882
03883 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03884 } while ((v = v->GetNextVehicle()) != NULL);
03885
03886 return cost;
03887 }
03888
03893 bool Train::Tick()
03894 {
03895 this->tick_counter++;
03896
03897 if (this->IsFrontEngine()) {
03898 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03899
03900 this->current_order_time++;
03901
03902 if (!TrainLocoHandler(this, false)) return false;
03903
03904 return TrainLocoHandler(this, true);
03905 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03906
03907 if (++this->crash_anim_pos >= 4400) {
03908 delete this;
03909 return false;
03910 }
03911 }
03912
03913 return true;
03914 }
03915
03920 static void CheckIfTrainNeedsService(Train *v)
03921 {
03922 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03923 if (v->IsChainInDepot()) {
03924 VehicleServiceInDepot(v);
03925 return;
03926 }
03927
03928 uint max_penalty;
03929 switch (_settings_game.pf.pathfinder_for_trains) {
03930 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03931 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03932 default: NOT_REACHED();
03933 }
03934
03935 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03936
03937 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03938 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03939
03940
03941
03942 v->current_order.MakeDummy();
03943 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03944 }
03945 return;
03946 }
03947
03948 DepotID depot = GetDepotIndex(tfdd.tile);
03949
03950 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03951 v->current_order.GetDestination() != depot &&
03952 !Chance16(3, 16)) {
03953 return;
03954 }
03955
03956 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03957 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03958 v->dest_tile = tfdd.tile;
03959 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03960 }
03961
03963 void Train::OnNewDay()
03964 {
03965 AgeVehicle(this);
03966
03967 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03968
03969 if (this->IsFrontEngine()) {
03970 CheckVehicleBreakdown(this);
03971
03972 CheckIfTrainNeedsService(this);
03973
03974 CheckOrders(this);
03975
03976
03977 if (this->current_order.IsType(OT_GOTO_STATION)) {
03978 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03979 if (tile != INVALID_TILE) this->dest_tile = tile;
03980 }
03981
03982 if (this->running_ticks != 0) {
03983
03984 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03985
03986 this->profit_this_year -= cost.GetCost();
03987 this->running_ticks = 0;
03988
03989 SubtractMoneyFromCompanyFract(this->owner, cost);
03990
03991 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03992 SetWindowClassesDirty(WC_TRAINS_LIST);
03993 }
03994 }
03995 }
03996
04001 Trackdir Train::GetVehicleTrackdir() const
04002 {
04003 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
04004
04005 if (this->track == TRACK_BIT_DEPOT) {
04006
04007 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
04008 }
04009
04010 if (this->track == TRACK_BIT_WORMHOLE) {
04011
04012 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
04013 }
04014
04015 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04016 }