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00012 #include "stdafx.h"
00013 #include "error.h"
00014 #include "articulated_vehicles.h"
00015 #include "command_func.h"
00016 #include "pathfinder/npf/npf_func.h"
00017 #include "pathfinder/yapf/yapf.hpp"
00018 #include "news_func.h"
00019 #include "company_func.h"
00020 #include "newgrf_sound.h"
00021 #include "newgrf_text.h"
00022 #include "strings_func.h"
00023 #include "viewport_func.h"
00024 #include "vehicle_func.h"
00025 #include "sound_func.h"
00026 #include "ai/ai.hpp"
00027 #include "game/game.hpp"
00028 #include "newgrf_station.h"
00029 #include "effectvehicle_func.h"
00030 #include "network/network.h"
00031 #include "spritecache.h"
00032 #include "core/random_func.hpp"
00033 #include "company_base.h"
00034 #include "newgrf.h"
00035 #include "order_backup.h"
00036 #include "zoom_func.h"
00037
00038 #include "table/strings.h"
00039 #include "table/train_cmd.h"
00040
00041 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00042 static bool TrainCheckIfLineEnds(Train *v, bool reverse = true);
00043 bool TrainController(Train *v, Vehicle *nomove, bool reverse = true);
00044 static TileIndex TrainApproachingCrossingTile(const Train *v);
00045 static void CheckIfTrainNeedsService(Train *v);
00046 static void CheckNextTrainTile(Train *v);
00047
00048 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00049 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00050
00051
00059 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00060 {
00061 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00062
00063 DiagDirection diagdir = DirToDiagDir(direction);
00064
00065
00066 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00067 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00068 }
00069
00070 return diagdir;
00071 }
00072
00073
00079 byte FreightWagonMult(CargoID cargo)
00080 {
00081 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00082 return _settings_game.vehicle.freight_trains;
00083 }
00084
00086 void CheckTrainsLengths()
00087 {
00088 const Train *v;
00089 bool first = true;
00090
00091 FOR_ALL_TRAINS(v) {
00092 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00093 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00094 if (u->track != TRACK_BIT_DEPOT) {
00095 if ((w->track != TRACK_BIT_DEPOT &&
00096 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->CalcNextVehicleOffset()) ||
00097 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00098 SetDParam(0, v->index);
00099 SetDParam(1, v->owner);
00100 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, WL_CRITICAL);
00101
00102 if (!_networking && first) {
00103 first = false;
00104 DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00105 }
00106
00107 break;
00108 }
00109 }
00110 }
00111 }
00112 }
00113 }
00114
00121 void Train::ConsistChanged(bool same_length)
00122 {
00123 uint16 max_speed = UINT16_MAX;
00124
00125 assert(this->IsFrontEngine() || this->IsFreeWagon());
00126
00127 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00128 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00129 this->gcache.cached_total_length = 0;
00130 this->compatible_railtypes = RAILTYPES_NONE;
00131
00132 bool train_can_tilt = true;
00133
00134 for (Train *u = this; u != NULL; u = u->Next()) {
00135 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00136
00137
00138 assert(u->First() == this);
00139
00140
00141 u->gcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00142 u->railtype = rvi_u->railtype;
00143
00144 if (u->IsEngine()) first_engine = u->engine_type;
00145
00146
00147 u->tcache.user_def_data = rvi_u->user_def_data;
00148 this->InvalidateNewGRFCache();
00149 u->InvalidateNewGRFCache();
00150 }
00151
00152 for (Train *u = this; u != NULL; u = u->Next()) {
00153
00154 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00155 this->InvalidateNewGRFCache();
00156 u->InvalidateNewGRFCache();
00157 }
00158
00159 for (Train *u = this; u != NULL; u = u->Next()) {
00160 const Engine *e_u = u->GetEngine();
00161 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00162
00163 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00164
00165
00166 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->gcache.first_engine);
00167
00168
00169 u->colourmap = PAL_NONE;
00170
00171
00172 u->UpdateVisualEffect(true);
00173
00174 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00175 UsesWagonOverride(u) && !HasBit(u->vcache.cached_vis_effect, VE_DISABLE_WAGON_POWER)) {
00176
00177 SetBit(u->flags, VRF_POWEREDWAGON);
00178 } else {
00179 ClrBit(u->flags, VRF_POWEREDWAGON);
00180 }
00181
00182 if (!u->IsArticulatedPart()) {
00183
00184
00185 if (rvi_u->power > 0) {
00186 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00187 }
00188
00189
00190
00191 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00192 u->railtype = RAILTYPE_RAIL;
00193 u->compatible_railtypes |= RAILTYPES_RAIL;
00194 }
00195
00196
00197 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00198 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00199 if (speed != 0) max_speed = min(speed, max_speed);
00200 }
00201 }
00202
00203 u->cargo_cap = e_u->DetermineCapacity(u);
00204 u->vcache.cached_cargo_age_period = GetVehicleProperty(u, PROP_TRAIN_CARGO_AGE_PERIOD, e_u->info.cargo_age_period);
00205
00206
00207 uint16 veh_len = CALLBACK_FAILED;
00208 if (e_u->GetGRF() != NULL && e_u->GetGRF()->grf_version >= 8) {
00209
00210 veh_len = GetVehicleProperty(u, PROP_TRAIN_SHORTEN_FACTOR, CALLBACK_FAILED);
00211 } else if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00212
00213 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00214 }
00215 if (veh_len != CALLBACK_FAILED && veh_len >= VEHICLE_LENGTH) {
00216 ErrorUnknownCallbackResult(e_u->GetGRFID(), CBID_VEHICLE_LENGTH, veh_len);
00217 }
00218 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00219 veh_len = VEHICLE_LENGTH - Clamp(veh_len, 0, VEHICLE_LENGTH - 1);
00220
00221
00222 if (same_length && veh_len != u->gcache.cached_veh_length) VehicleLengthChanged(u);
00223
00224
00225 if (!same_length) u->gcache.cached_veh_length = veh_len;
00226
00227 this->gcache.cached_total_length += u->gcache.cached_veh_length;
00228 this->InvalidateNewGRFCache();
00229 u->InvalidateNewGRFCache();
00230 }
00231
00232
00233 this->vcache.cached_max_speed = max_speed;
00234 this->tcache.cached_tilt = train_can_tilt;
00235 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00236
00237
00238 this->CargoChanged();
00239
00240 if (this->IsFrontEngine()) {
00241 this->UpdateAcceleration();
00242 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00243 InvalidateWindowData(WC_VEHICLE_REFIT, this->index);
00244 }
00245 }
00246
00257 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00258 {
00259 const Station *st = Station::Get(station_id);
00260 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00261 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00262
00263
00264
00265 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00266 if (v->gcache.cached_total_length >= *station_length) {
00267
00268 osl = OSL_PLATFORM_FAR_END;
00269 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00270 osl = v->current_order.GetStopLocation();
00271 }
00272
00273
00274 int stop;
00275 switch (osl) {
00276 default: NOT_REACHED();
00277
00278 case OSL_PLATFORM_NEAR_END:
00279 stop = v->gcache.cached_total_length;
00280 break;
00281
00282 case OSL_PLATFORM_MIDDLE:
00283 stop = *station_length - (*station_length - v->gcache.cached_total_length) / 2;
00284 break;
00285
00286 case OSL_PLATFORM_FAR_END:
00287 stop = *station_length;
00288 break;
00289 }
00290
00291
00292
00293 return stop - (v->gcache.cached_veh_length + 1) / 2;
00294 }
00295
00296
00301 int Train::GetCurveSpeedLimit() const
00302 {
00303 assert(this->First() == this);
00304
00305 static const int absolute_max_speed = UINT16_MAX;
00306 int max_speed = absolute_max_speed;
00307
00308 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00309
00310 int curvecount[2] = {0, 0};
00311
00312
00313 int numcurve = 0;
00314 int sum = 0;
00315 int pos = 0;
00316 int lastpos = -1;
00317 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00318 Direction this_dir = u->direction;
00319 Direction next_dir = u->Next()->direction;
00320
00321 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00322 if (dirdiff == DIRDIFF_SAME) continue;
00323
00324 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00325 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00326 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00327 if (lastpos != -1) {
00328 numcurve++;
00329 sum += pos - lastpos;
00330 if (pos - lastpos == 1 && max_speed > 88) {
00331 max_speed = 88;
00332 }
00333 }
00334 lastpos = pos;
00335 }
00336
00337
00338 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00339 max_speed = 61;
00340 }
00341 }
00342
00343 if (numcurve > 0 && max_speed > 88) {
00344 if (curvecount[0] == 1 && curvecount[1] == 1) {
00345 max_speed = absolute_max_speed;
00346 } else {
00347 sum /= numcurve;
00348 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00349 }
00350 }
00351
00352 if (max_speed != absolute_max_speed) {
00353
00354 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00355 max_speed += (max_speed / 2) * rti->curve_speed;
00356
00357 if (this->tcache.cached_tilt) {
00358
00359 max_speed += max_speed / 5;
00360 }
00361 }
00362
00363 return max_speed;
00364 }
00365
00370 int Train::GetCurrentMaxSpeed() const
00371 {
00372 int max_speed = this->tcache.cached_max_curve_speed;
00373 assert(max_speed == this->GetCurveSpeedLimit());
00374
00375 if (IsRailStationTile(this->tile)) {
00376 StationID sid = GetStationIndex(this->tile);
00377 if (this->current_order.ShouldStopAtStation(this, sid)) {
00378 int station_ahead;
00379 int station_length;
00380 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00381
00382
00383
00384 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00385
00386 if (distance_to_go > 0) {
00387 int st_max_speed = 120;
00388
00389 int delta_v = this->cur_speed / (distance_to_go + 1);
00390 if (max_speed > (this->cur_speed - delta_v)) {
00391 st_max_speed = this->cur_speed - (delta_v / 10);
00392 }
00393
00394 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00395 max_speed = min(max_speed, st_max_speed);
00396 }
00397 }
00398 }
00399
00400 for (const Train *u = this; u != NULL; u = u->Next()) {
00401 if (u->track == TRACK_BIT_DEPOT) {
00402 max_speed = min(max_speed, 61);
00403 break;
00404 }
00405 }
00406
00407 max_speed = min(max_speed, this->current_order.max_speed);
00408 return min(max_speed, this->gcache.cached_max_track_speed);
00409 }
00410
00412 void Train::UpdateAcceleration()
00413 {
00414 assert(this->IsFrontEngine());
00415
00416 uint power = this->gcache.cached_power;
00417 uint weight = this->gcache.cached_weight;
00418 assert(weight != 0);
00419 this->acceleration = Clamp(power / weight * 4, 1, 255);
00420 }
00421
00427 int Train::GetDisplayImageWidth(Point *offset) const
00428 {
00429 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00430 int vehicle_pitch = 0;
00431
00432 const Engine *e = this->GetEngine();
00433 if (e->GetGRF() != NULL && is_custom_sprite(e->u.rail.image_index)) {
00434 reference_width = e->GetGRF()->traininfo_vehicle_width;
00435 vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
00436 }
00437
00438 if (offset != NULL) {
00439 offset->x = reference_width / 2;
00440 offset->y = vehicle_pitch;
00441 }
00442 return this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH;
00443 }
00444
00445 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00446 {
00447 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00448 }
00449
00456 SpriteID Train::GetImage(Direction direction, EngineImageType image_type) const
00457 {
00458 uint8 spritenum = this->spritenum;
00459 SpriteID sprite;
00460
00461 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00462
00463 if (is_custom_sprite(spritenum)) {
00464 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)), image_type);
00465 if (sprite != 0) return sprite;
00466
00467 spritenum = this->GetEngine()->original_image_index;
00468 }
00469
00470 sprite = GetDefaultTrainSprite(spritenum, direction);
00471
00472 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00473
00474 return sprite;
00475 }
00476
00477 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y, EngineImageType image_type)
00478 {
00479 const Engine *e = Engine::Get(engine);
00480 Direction dir = rear_head ? DIR_E : DIR_W;
00481 uint8 spritenum = e->u.rail.image_index;
00482
00483 if (is_custom_sprite(spritenum)) {
00484 SpriteID sprite = GetCustomVehicleIcon(engine, dir, image_type);
00485 if (sprite != 0) {
00486 if (e->GetGRF() != NULL) {
00487 y += e->GetGRF()->traininfo_vehicle_pitch;
00488 }
00489 return sprite;
00490 }
00491
00492 spritenum = Engine::Get(engine)->original_image_index;
00493 }
00494
00495 if (rear_head) spritenum++;
00496
00497 return GetDefaultTrainSprite(spritenum, DIR_W);
00498 }
00499
00500 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
00501 {
00502 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00503 int yf = y;
00504 int yr = y;
00505
00506 SpriteID spritef = GetRailIcon(engine, false, yf, image_type);
00507 SpriteID spriter = GetRailIcon(engine, true, yr, image_type);
00508 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00509 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00510
00511 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);
00512
00513 DrawSprite(spritef, pal, preferred_x - 14, yf);
00514 DrawSprite(spriter, pal, preferred_x + 15, yr);
00515 } else {
00516 SpriteID sprite = GetRailIcon(engine, false, y, image_type);
00517 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00518 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));
00519 DrawSprite(sprite, pal, preferred_x, y);
00520 }
00521 }
00522
00531 static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const Engine *e, Vehicle **ret)
00532 {
00533 const RailVehicleInfo *rvi = &e->u.rail;
00534
00535
00536 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00537
00538 if (flags & DC_EXEC) {
00539 Train *v = new Train();
00540 *ret = v;
00541 v->spritenum = rvi->image_index;
00542
00543 v->engine_type = e->index;
00544 v->gcache.first_engine = INVALID_ENGINE;
00545
00546 DiagDirection dir = GetRailDepotDirection(tile);
00547
00548 v->direction = DiagDirToDir(dir);
00549 v->tile = tile;
00550
00551 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00552 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00553
00554 v->x_pos = x;
00555 v->y_pos = y;
00556 v->z_pos = GetSlopePixelZ(x, y);
00557 v->owner = _current_company;
00558 v->track = TRACK_BIT_DEPOT;
00559 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00560
00561 v->SetWagon();
00562
00563 v->SetFreeWagon();
00564 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00565
00566 v->cargo_type = e->GetDefaultCargoType();
00567 v->cargo_cap = rvi->capacity;
00568
00569 v->railtype = rvi->railtype;
00570
00571 v->build_year = _cur_year;
00572 v->cur_image = SPR_IMG_QUERY;
00573 v->random_bits = VehicleRandomBits();
00574
00575 v->group_id = DEFAULT_GROUP;
00576
00577 AddArticulatedParts(v);
00578
00579 _new_vehicle_id = v->index;
00580
00581 VehicleUpdatePosition(v);
00582 v->First()->ConsistChanged(false);
00583 UpdateTrainGroupID(v->First());
00584
00585 CheckConsistencyOfArticulatedVehicle(v);
00586
00587
00588 Train *w;
00589 FOR_ALL_TRAINS(w) {
00590 if (w->tile == tile &&
00591 w->IsFreeWagon() &&
00592 w->engine_type == e->index &&
00593 w->First() != v &&
00594 !(w->vehstatus & VS_CRASHED)) {
00595 DoCommand(0, v->index | 1 << 20, w->Last()->index, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00596 break;
00597 }
00598 }
00599 }
00600
00601 return CommandCost();
00602 }
00603
00605 static void NormalizeTrainVehInDepot(const Train *u)
00606 {
00607 const Train *v;
00608 FOR_ALL_TRAINS(v) {
00609 if (v->IsFreeWagon() && v->tile == u->tile &&
00610 v->track == TRACK_BIT_DEPOT) {
00611 if (DoCommand(0, v->index | 1 << 20, u->index, DC_EXEC,
00612 CMD_MOVE_RAIL_VEHICLE).Failed())
00613 break;
00614 }
00615 }
00616 }
00617
00618 static void AddRearEngineToMultiheadedTrain(Train *v)
00619 {
00620 Train *u = new Train();
00621 v->value >>= 1;
00622 u->value = v->value;
00623 u->direction = v->direction;
00624 u->owner = v->owner;
00625 u->tile = v->tile;
00626 u->x_pos = v->x_pos;
00627 u->y_pos = v->y_pos;
00628 u->z_pos = v->z_pos;
00629 u->track = TRACK_BIT_DEPOT;
00630 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00631 u->spritenum = v->spritenum + 1;
00632 u->cargo_type = v->cargo_type;
00633 u->cargo_subtype = v->cargo_subtype;
00634 u->cargo_cap = v->cargo_cap;
00635 u->railtype = v->railtype;
00636 u->engine_type = v->engine_type;
00637 u->build_year = v->build_year;
00638 u->cur_image = SPR_IMG_QUERY;
00639 u->random_bits = VehicleRandomBits();
00640 v->SetMultiheaded();
00641 u->SetMultiheaded();
00642 v->SetNext(u);
00643 VehicleUpdatePosition(u);
00644
00645
00646 v->other_multiheaded_part = u;
00647 u->other_multiheaded_part = v;
00648 }
00649
00659 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, const Engine *e, uint16 data, Vehicle **ret)
00660 {
00661 const RailVehicleInfo *rvi = &e->u.rail;
00662
00663 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(tile, flags, e, ret);
00664
00665
00666
00667 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00668
00669 if (flags & DC_EXEC) {
00670 DiagDirection dir = GetRailDepotDirection(tile);
00671 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00672 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00673
00674 Train *v = new Train();
00675 *ret = v;
00676 v->direction = DiagDirToDir(dir);
00677 v->tile = tile;
00678 v->owner = _current_company;
00679 v->x_pos = x;
00680 v->y_pos = y;
00681 v->z_pos = GetSlopePixelZ(x, y);
00682 v->track = TRACK_BIT_DEPOT;
00683 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00684 v->spritenum = rvi->image_index;
00685 v->cargo_type = e->GetDefaultCargoType();
00686 v->cargo_cap = rvi->capacity;
00687 v->last_station_visited = INVALID_STATION;
00688 v->last_loading_station = INVALID_STATION;
00689
00690 v->engine_type = e->index;
00691 v->gcache.first_engine = INVALID_ENGINE;
00692
00693 v->reliability = e->reliability;
00694 v->reliability_spd_dec = e->reliability_spd_dec;
00695 v->max_age = e->GetLifeLengthInDays();
00696
00697 v->railtype = rvi->railtype;
00698 _new_vehicle_id = v->index;
00699
00700 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00701 v->date_of_last_service = _date;
00702 v->build_year = _cur_year;
00703 v->cur_image = SPR_IMG_QUERY;
00704 v->random_bits = VehicleRandomBits();
00705
00706 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00707
00708 v->group_id = DEFAULT_GROUP;
00709
00710 v->SetFrontEngine();
00711 v->SetEngine();
00712
00713 VehicleUpdatePosition(v);
00714
00715 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00716 AddRearEngineToMultiheadedTrain(v);
00717 } else {
00718 AddArticulatedParts(v);
00719 }
00720
00721 v->ConsistChanged(false);
00722 UpdateTrainGroupID(v);
00723
00724 if (!HasBit(data, 0) && !(flags & DC_AUTOREPLACE)) {
00725 NormalizeTrainVehInDepot(v);
00726 }
00727
00728 CheckConsistencyOfArticulatedVehicle(v);
00729 }
00730
00731 return CommandCost();
00732 }
00733
00738 bool Train::IsInDepot() const
00739 {
00740
00741 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00742
00743
00744 for (const Train *v = this; v != NULL; v = v->Next()) {
00745 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00746 }
00747
00748 return true;
00749 }
00750
00755 bool Train::IsStoppedInDepot() const
00756 {
00757
00758 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00759 return this->IsInDepot();
00760 }
00761
00762 static Train *FindGoodVehiclePos(const Train *src)
00763 {
00764 EngineID eng = src->engine_type;
00765 TileIndex tile = src->tile;
00766
00767 Train *dst;
00768 FOR_ALL_TRAINS(dst) {
00769 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00770
00771 Train *t = dst;
00772 while (t->engine_type == eng) {
00773 t = t->Next();
00774 if (t == NULL) return dst;
00775 }
00776 }
00777 }
00778
00779 return NULL;
00780 }
00781
00783 typedef SmallVector<Train *, 16> TrainList;
00784
00790 static void MakeTrainBackup(TrainList &list, Train *t)
00791 {
00792 for (; t != NULL; t = t->Next()) *list.Append() = t;
00793 }
00794
00799 static void RestoreTrainBackup(TrainList &list)
00800 {
00801
00802 if (list.Length() == 0) return;
00803
00804 Train *prev = NULL;
00805
00806 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
00807 Train *t = *iter;
00808 if (prev != NULL) {
00809 prev->SetNext(t);
00810 } else if (t->Previous() != NULL) {
00811
00812 t->Previous()->SetNext(NULL);
00813 }
00814 prev = t;
00815 }
00816 }
00817
00823 static void RemoveFromConsist(Train *part, bool chain = false)
00824 {
00825 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
00826
00827
00828
00829 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
00830
00831
00832 tail->SetNext(NULL);
00833 }
00834
00840 static void InsertInConsist(Train *dst, Train *chain)
00841 {
00842
00843 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
00844
00845 chain->Last()->SetNext(dst->Next());
00846 dst->SetNext(chain);
00847 }
00848
00854 static void NormaliseDualHeads(Train *t)
00855 {
00856 for (; t != NULL; t = t->GetNextVehicle()) {
00857 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
00858
00859
00860 Train *u;
00861 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
00862
00863 if (u == t->other_multiheaded_part) continue;
00864
00865
00866 RemoveFromConsist(t->other_multiheaded_part);
00867
00868 InsertInConsist(u, t->other_multiheaded_part);
00869 }
00870 }
00871
00876 static void NormaliseSubtypes(Train *chain)
00877 {
00878
00879 if (chain == NULL) return;
00880
00881
00882 assert(chain->Previous() == NULL);
00883
00884
00885 if (chain->IsWagon()) {
00886 chain->SetFreeWagon();
00887 } else {
00888 assert(chain->IsEngine());
00889 chain->SetFrontEngine();
00890 }
00891
00892
00893 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
00894 t->ClearFreeWagon();
00895 t->ClearFrontEngine();
00896 }
00897 }
00898
00908 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
00909 {
00910
00911
00912
00913 if ((src != NULL && src->IsEngine() ? 1 : 0) +
00914 (dst != NULL && dst->IsEngine() ? 1 : 0) -
00915 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
00916 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
00917 return CommandCost();
00918 }
00919
00920
00921
00922 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
00923
00924 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00925 }
00926
00932 static CommandCost CheckTrainAttachment(Train *t)
00933 {
00934
00935 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
00936
00937
00938
00939 int allowed_len = _settings_game.vehicle.max_train_length * TILE_SIZE - t->gcache.cached_veh_length;
00940
00941 Train *head = t;
00942 Train *prev = t;
00943
00944
00945 t = t->Next();
00946 prev->SetNext(NULL);
00947
00948
00949 head->InvalidateNewGRFCache();
00950
00951 while (t != NULL) {
00952 allowed_len -= t->gcache.cached_veh_length;
00953
00954 Train *next = t->Next();
00955
00956
00957
00958 t->SetNext(NULL);
00959
00960
00961 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
00962
00963 EngineID first_engine = t->gcache.first_engine;
00964 t->gcache.first_engine = INVALID_ENGINE;
00965
00966
00967
00968 t->InvalidateNewGRFCache();
00969
00970 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
00971
00972
00973 t->gcache.first_engine = first_engine;
00974
00975
00976 t->InvalidateNewGRFCache();
00977 head->InvalidateNewGRFCache();
00978
00979 if (callback != CALLBACK_FAILED) {
00980
00981 StringID error = STR_NULL;
00982
00983 if (head->GetGRF()->grf_version < 8) {
00984 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00985 if (callback < 0xFD) error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00986 if (callback >= 0x100) ErrorUnknownCallbackResult(head->GetGRFID(), CBID_TRAIN_ALLOW_WAGON_ATTACH, callback);
00987 } else {
00988 if (callback < 0x400) {
00989 error = GetGRFStringID(head->GetGRFID(), 0xD000 + callback);
00990 } else {
00991 switch (callback) {
00992 case 0x400:
00993 case 0x401:
00994 break;
00995
00996 default:
00997 case 0x402:
00998 error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
00999 break;
01000 }
01001 }
01002 }
01003
01004 if (error != STR_NULL) return_cmd_error(error);
01005 }
01006 }
01007
01008
01009 prev->SetNext(t);
01010 prev = t;
01011 t = next;
01012 }
01013
01014 if (allowed_len < 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01015 return CommandCost();
01016 }
01017
01028 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src, bool check_limit)
01029 {
01030
01031 CommandCost ret = CheckTrainAttachment(src);
01032 if (ret.Failed()) return ret;
01033 ret = CheckTrainAttachment(dst);
01034 if (ret.Failed()) return ret;
01035
01036
01037 return check_limit ? CheckNewTrain(original_dst, dst, original_src, src) : CommandCost();
01038 }
01039
01048 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01049 {
01050
01051 if (*src_head == *dst_head) {
01052
01053
01054 *dst_head = NULL;
01055 } else if (*dst_head == NULL) {
01056
01057
01058 *dst_head = src;
01059 }
01060
01061 if (src == *src_head) {
01062
01063
01064
01065
01066
01067
01068 *src_head = move_chain ? NULL :
01069 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01070 }
01071
01072
01073
01074
01075 RemoveFromConsist(src, move_chain);
01076 if (*dst_head != src) InsertInConsist(dst, src);
01077
01078
01079
01080 NormaliseDualHeads(*src_head);
01081 NormaliseDualHeads(*dst_head);
01082 }
01083
01089 static void NormaliseTrainHead(Train *head)
01090 {
01091
01092 if (head == NULL) return;
01093
01094
01095 head->ConsistChanged(false);
01096 UpdateTrainGroupID(head);
01097
01098
01099 if (!head->IsFrontEngine()) return;
01100
01101
01102 InvalidateWindowData(WC_VEHICLE_REFIT, head->index);
01103 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, WID_VV_REFIT);
01104
01105
01106 if (head->unitnumber != 0) return;
01107 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01108 }
01109
01122 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01123 {
01124 VehicleID s = GB(p1, 0, 20);
01125 VehicleID d = GB(p2, 0, 20);
01126 bool move_chain = HasBit(p1, 20);
01127
01128 Train *src = Train::GetIfValid(s);
01129 if (src == NULL) return CMD_ERROR;
01130
01131 CommandCost ret = CheckOwnership(src->owner);
01132 if (ret.Failed()) return ret;
01133
01134
01135 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01136
01137
01138 Train *dst;
01139 if (d == INVALID_VEHICLE) {
01140 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01141 } else {
01142 dst = Train::GetIfValid(d);
01143 if (dst == NULL) return CMD_ERROR;
01144
01145 CommandCost ret = CheckOwnership(dst->owner);
01146 if (ret.Failed()) return ret;
01147
01148
01149 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01150 }
01151
01152
01153 src = src->GetFirstEnginePart();
01154 if (dst != NULL) {
01155 dst = dst->GetFirstEnginePart();
01156 }
01157
01158
01159 if (src == dst) return CommandCost();
01160
01161
01162 Train *src_head = src->First();
01163 Train *dst_head;
01164 if (dst != NULL) {
01165 dst_head = dst->First();
01166 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01167
01168 dst = dst->GetLastEnginePart();
01169 } else {
01170 dst_head = NULL;
01171 }
01172
01173 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01174
01175
01176 if (move_chain && src_head == dst_head) return CommandCost();
01177
01178
01179 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01180
01181
01182 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01183
01184
01185 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01186
01187
01188
01189 TrainList original_src;
01190 TrainList original_dst;
01191
01192 MakeTrainBackup(original_src, src_head);
01193 MakeTrainBackup(original_dst, dst_head);
01194
01195
01196
01197
01198 Train *original_src_head = src_head;
01199 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01200
01201
01202 bool original_src_head_front_engine = original_src_head != NULL && original_src_head->IsFrontEngine();
01203 bool original_dst_head_front_engine = original_dst_head != NULL && original_dst_head->IsFrontEngine();
01204
01205
01206 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01207
01208 if ((flags & DC_AUTOREPLACE) == 0) {
01209
01210
01211
01212 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head, true);
01213 if (ret.Failed()) {
01214
01215 RestoreTrainBackup(original_src);
01216 RestoreTrainBackup(original_dst);
01217 return ret;
01218 }
01219 }
01220
01221
01222 if (flags & DC_EXEC) {
01223
01224 if (original_src_head_front_engine) GroupStatistics::CountVehicle(original_src_head, -1);
01225 if (original_dst_head_front_engine) GroupStatistics::CountVehicle(original_dst_head, -1);
01226
01227
01228 NormaliseSubtypes(src_head);
01229 NormaliseSubtypes(dst_head);
01230
01231
01232
01233
01234
01235
01236
01237
01238
01239
01240
01241
01242
01243
01244
01245
01246
01247
01248
01249
01250
01251 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01252
01253 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01254 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01255 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01256 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01257 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01258 SetWindowDirty(WC_COMPANY, _current_company);
01259
01260
01261
01262 DeleteVehicleOrders(src);
01263 RemoveVehicleFromGroup(src);
01264 src->unitnumber = 0;
01265 }
01266
01267
01268
01269 if (original_src_head != src && dst_head == src) {
01270 SetTrainGroupID(src, DEFAULT_GROUP);
01271 SetWindowDirty(WC_COMPANY, _current_company);
01272 }
01273
01274
01275 if (src_head != NULL && src_head->IsFrontEngine()) GroupStatistics::CountVehicle(src_head, 1);
01276 if (dst_head != NULL && dst_head->IsFrontEngine()) GroupStatistics::CountVehicle(dst_head, 1);
01277
01278
01279 NormaliseTrainHead(src_head);
01280 NormaliseTrainHead(dst_head);
01281
01282 if ((flags & DC_NO_CARGO_CAP_CHECK) == 0) {
01283 CheckCargoCapacity(src_head);
01284 CheckCargoCapacity(dst_head);
01285 }
01286
01287
01288 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01289 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01290 } else {
01291
01292 RestoreTrainBackup(original_src);
01293 RestoreTrainBackup(original_dst);
01294 }
01295
01296 return CommandCost();
01297 }
01298
01310 CommandCost CmdSellRailWagon(DoCommandFlag flags, Vehicle *t, uint16 data, uint32 user)
01311 {
01312
01313 Window *w = NULL;
01314
01315
01316 bool sell_chain = HasBit(data, 0);
01317
01318 Train *v = Train::From(t)->GetFirstEnginePart();
01319 Train *first = v->First();
01320
01321 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01322
01323
01324
01325 TrainList original;
01326 MakeTrainBackup(original, first);
01327
01328
01329 Train *new_head = first;
01330 Train *sell_head = NULL;
01331
01332
01333 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01334
01335
01336 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head, (flags & DC_AUTOREPLACE) == 0);
01337 if (ret.Failed()) {
01338
01339 RestoreTrainBackup(original);
01340 return ret;
01341 }
01342
01343 CommandCost cost(EXPENSES_NEW_VEHICLES);
01344 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01345
01346 if (first->orders.list == NULL && !OrderList::CanAllocateItem()) {
01347 return_cmd_error(STR_ERROR_NO_MORE_SPACE_FOR_ORDERS);
01348 }
01349
01350
01351 if (flags & DC_EXEC) {
01352
01353 NormaliseSubtypes(new_head);
01354
01355 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01356
01357
01358 new_head->orders.list = first->orders.list;
01359 new_head->AddToShared(first);
01360 DeleteVehicleOrders(first);
01361
01362
01363 new_head->CopyVehicleConfigAndStatistics(first);
01364 GroupStatistics::CountVehicle(new_head, 1);
01365
01366
01367 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01368 } else if (v->IsPrimaryVehicle() && data & (MAKE_ORDER_BACKUP_FLAG >> 20)) {
01369 OrderBackup::Backup(v, user);
01370 }
01371
01372
01373 NormaliseTrainHead(new_head);
01374
01375
01376 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01377 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01378
01379
01380 delete sell_head;
01381 } else {
01382
01383 RestoreTrainBackup(original);
01384 }
01385
01386 return cost;
01387 }
01388
01389 void Train::UpdateDeltaXY(Direction direction)
01390 {
01391
01392 this->x_offs = -1;
01393 this->y_offs = -1;
01394 this->x_extent = 3;
01395 this->y_extent = 3;
01396 this->z_extent = 6;
01397 this->x_bb_offs = 0;
01398 this->y_bb_offs = 0;
01399
01400 if (!IsDiagonalDirection(direction)) {
01401 static const int _sign_table[] =
01402 {
01403
01404 -1, -1,
01405 -1, 1,
01406 1, 1,
01407 1, -1,
01408 };
01409
01410 int half_shorten = (VEHICLE_LENGTH - this->gcache.cached_veh_length) / 2;
01411
01412
01413 this->x_offs -= half_shorten * _sign_table[direction];
01414 this->y_offs -= half_shorten * _sign_table[direction + 1];
01415 this->x_extent += this->x_bb_offs = half_shorten * _sign_table[direction];
01416 this->y_extent += this->y_bb_offs = half_shorten * _sign_table[direction + 1];
01417 } else {
01418 switch (direction) {
01419
01420
01421 case DIR_NE:
01422 this->x_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01423 this->x_extent = this->gcache.cached_veh_length - 1;
01424 this->x_bb_offs = -1;
01425 break;
01426
01427 case DIR_NW:
01428 this->y_offs = 1 - (this->gcache.cached_veh_length + 1) / 2;
01429 this->y_extent = this->gcache.cached_veh_length - 1;
01430 this->y_bb_offs = -1;
01431 break;
01432
01433
01434
01435 case DIR_SW:
01436 this->x_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01437 this->x_extent = VEHICLE_LENGTH - 1;
01438 this->x_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01439 break;
01440
01441 case DIR_SE:
01442 this->y_offs = 1 + (this->gcache.cached_veh_length + 1) / 2 - VEHICLE_LENGTH;
01443 this->y_extent = VEHICLE_LENGTH - 1;
01444 this->y_bb_offs = VEHICLE_LENGTH - this->gcache.cached_veh_length - 1;
01445 break;
01446
01447 default:
01448 NOT_REACHED();
01449 }
01450 }
01451 }
01452
01457 static void MarkTrainAsStuck(Train *v)
01458 {
01459 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01460
01461 SetBit(v->flags, VRF_TRAIN_STUCK);
01462
01463 v->wait_counter = 0;
01464
01465
01466 v->cur_speed = 0;
01467 v->subspeed = 0;
01468 v->SetLastSpeed();
01469
01470 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01471 }
01472 }
01473
01481 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01482 {
01483 uint16 flag1 = *swap_flag1;
01484 uint16 flag2 = *swap_flag2;
01485
01486
01487 ClrBit(*swap_flag1, GVF_GOINGUP_BIT);
01488 ClrBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01489 ClrBit(*swap_flag2, GVF_GOINGUP_BIT);
01490 ClrBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01491
01492
01493 if (HasBit(flag1, GVF_GOINGUP_BIT)) {
01494 SetBit(*swap_flag2, GVF_GOINGDOWN_BIT);
01495 } else if (HasBit(flag1, GVF_GOINGDOWN_BIT)) {
01496 SetBit(*swap_flag2, GVF_GOINGUP_BIT);
01497 }
01498 if (HasBit(flag2, GVF_GOINGUP_BIT)) {
01499 SetBit(*swap_flag1, GVF_GOINGDOWN_BIT);
01500 } else if (HasBit(flag2, GVF_GOINGDOWN_BIT)) {
01501 SetBit(*swap_flag1, GVF_GOINGUP_BIT);
01502 }
01503 }
01504
01509 static void UpdateStatusAfterSwap(Train *v)
01510 {
01511
01512 if (v->track != TRACK_BIT_DEPOT) v->direction = ReverseDir(v->direction);
01513
01514
01515 if (v->track != TRACK_BIT_WORMHOLE) {
01516 VehicleEnterTile(v, v->tile, v->x_pos, v->y_pos);
01517 } else {
01518
01519
01520
01521
01522 TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
01523 if (IsTileType(vt, MP_TUNNELBRIDGE)) {
01524 VehicleEnterTile(v, vt, v->x_pos, v->y_pos);
01525 if (v->track != TRACK_BIT_WORMHOLE && IsBridgeTile(v->tile)) {
01526
01527
01528
01529 VehicleUpdatePosition(v);
01530 v->UpdateInclination(true, true);
01531 return;
01532 }
01533 }
01534 }
01535
01536 VehicleUpdatePosition(v);
01537 v->UpdateViewport(true, true);
01538 }
01539
01546 void ReverseTrainSwapVeh(Train *v, int l, int r)
01547 {
01548 Train *a, *b;
01549
01550
01551 for (a = v; l != 0; l--) a = a->Next();
01552 for (b = v; r != 0; r--) b = b->Next();
01553
01554 if (a != b) {
01555
01556 {
01557 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus & VS_HIDDEN);
01558 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus & VS_HIDDEN);
01559 a->vehstatus = tmp;
01560 }
01561
01562 Swap(a->track, b->track);
01563 Swap(a->direction, b->direction);
01564 Swap(a->x_pos, b->x_pos);
01565 Swap(a->y_pos, b->y_pos);
01566 Swap(a->tile, b->tile);
01567 Swap(a->z_pos, b->z_pos);
01568
01569 SwapTrainFlags(&a->gv_flags, &b->gv_flags);
01570
01571 UpdateStatusAfterSwap(a);
01572 UpdateStatusAfterSwap(b);
01573 } else {
01574
01575
01576
01577 SwapTrainFlags(&a->gv_flags, &a->gv_flags);
01578 UpdateStatusAfterSwap(a);
01579 }
01580 }
01581
01582
01588 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01589 {
01590 return (v->type == VEH_TRAIN) ? v : NULL;
01591 }
01592
01593
01600 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01601 {
01602 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01603
01604 Train *t = Train::From(v);
01605 if (!t->IsFrontEngine()) return NULL;
01606
01607 TileIndex tile = *(TileIndex *)data;
01608
01609 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01610
01611 return t;
01612 }
01613
01614
01621 static bool TrainApproachingCrossing(TileIndex tile)
01622 {
01623 assert(IsLevelCrossingTile(tile));
01624
01625 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01626 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01627
01628 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01629
01630 dir = ReverseDiagDir(dir);
01631 tile_from = tile + TileOffsByDiagDir(dir);
01632
01633 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01634 }
01635
01636
01643 void UpdateLevelCrossing(TileIndex tile, bool sound)
01644 {
01645 assert(IsLevelCrossingTile(tile));
01646
01647
01648 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01649
01650 if (new_state != IsCrossingBarred(tile)) {
01651 if (new_state && sound) {
01652 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01653 }
01654 SetCrossingBarred(tile, new_state);
01655 MarkTileDirtyByTile(tile);
01656 }
01657 }
01658
01659
01665 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01666 {
01667 if (!IsCrossingBarred(tile)) {
01668 BarCrossing(tile);
01669 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01670 MarkTileDirtyByTile(tile);
01671 }
01672 }
01673
01674
01680 static void AdvanceWagonsBeforeSwap(Train *v)
01681 {
01682 Train *base = v;
01683 Train *first = base;
01684 Train *last = v->Last();
01685 uint length = CountVehiclesInChain(v);
01686
01687 while (length > 2) {
01688 last = last->Previous();
01689 first = first->Next();
01690
01691 int differential = base->CalcNextVehicleOffset() - last->CalcNextVehicleOffset();
01692
01693
01694
01695 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01696
01697 base = first;
01698 length -= 2;
01699 }
01700 }
01701
01702
01708 static void AdvanceWagonsAfterSwap(Train *v)
01709 {
01710
01711 Train *dep = v;
01712 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01713 dep = dep->Next();
01714 }
01715
01716 Train *leave = dep->Next();
01717
01718 if (leave != NULL) {
01719
01720 int d = TicksToLeaveDepot(dep);
01721
01722 if (d <= 0) {
01723 leave->vehstatus &= ~VS_HIDDEN;
01724 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01725 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01726 }
01727 } else {
01728 dep = NULL;
01729 }
01730
01731 Train *base = v;
01732 Train *first = base;
01733 Train *last = v->Last();
01734 uint length = CountVehiclesInChain(v);
01735
01736
01737
01738 bool nomove = (dep == NULL);
01739
01740 while (length > 2) {
01741
01742
01743 if (base == dep) break;
01744
01745
01746 if (last == dep) nomove = true;
01747
01748 last = last->Previous();
01749 first = first->Next();
01750
01751 int differential = last->CalcNextVehicleOffset() - base->CalcNextVehicleOffset();
01752
01753
01754 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01755
01756 base = first;
01757 length -= 2;
01758 }
01759 }
01760
01765 void ReverseTrainDirection(Train *v)
01766 {
01767 if (IsRailDepotTile(v->tile)) {
01768 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01769 }
01770
01771
01772 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01773
01774
01775 TileIndex crossing = TrainApproachingCrossingTile(v);
01776
01777
01778 int r = CountVehiclesInChain(v) - 1;
01779
01780 AdvanceWagonsBeforeSwap(v);
01781
01782
01783 int l = 0;
01784 do {
01785 ReverseTrainSwapVeh(v, l++, r--);
01786 } while (l <= r);
01787
01788 AdvanceWagonsAfterSwap(v);
01789
01790 if (IsRailDepotTile(v->tile)) {
01791 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01792 }
01793
01794 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01795
01796 ClrBit(v->flags, VRF_REVERSING);
01797
01798
01799 v->ConsistChanged(true);
01800
01801
01802 for (Train *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01803
01804
01805 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01806
01807
01808 crossing = TrainApproachingCrossingTile(v);
01809 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01810
01811
01812 if (v->track == TRACK_BIT_DEPOT) {
01813
01814 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
01815 ClrBit(v->flags, VRF_TRAIN_STUCK);
01816 return;
01817 }
01818
01819
01820
01821 DiagDirection dir = TrainExitDir(v->direction, v->track);
01822 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01823
01824 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01825
01826
01827 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01828 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01829 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01830
01831
01832 if (IsRailDepotTile(v->tile) && TrackdirToExitdir(v->GetVehicleTrackdir()) == GetRailDepotDirection(v->tile)) first_tile_okay = false;
01833
01834 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01835 if (TryPathReserve(v, false, first_tile_okay)) {
01836
01837 CheckNextTrainTile(v);
01838 } else if (v->current_order.GetType() != OT_LOADING) {
01839
01840 MarkTrainAsStuck(v);
01841 }
01842 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01843
01844 ClrBit(v->flags, VRF_TRAIN_STUCK);
01845 v->wait_counter = 0;
01846 }
01847 }
01848
01858 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01859 {
01860 Train *v = Train::GetIfValid(p1);
01861 if (v == NULL) return CMD_ERROR;
01862
01863 CommandCost ret = CheckOwnership(v->owner);
01864 if (ret.Failed()) return ret;
01865
01866 if (p2 != 0) {
01867
01868
01869 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01870 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01871 }
01872 if (!HasBit(EngInfo(v->engine_type)->misc_flags, EF_RAIL_FLIPS)) return CMD_ERROR;
01873
01874 Train *front = v->First();
01875
01876 if (!front->IsStoppedInDepot()) {
01877 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01878 }
01879
01880 if (flags & DC_EXEC) {
01881 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01882
01883 front->ConsistChanged(false);
01884 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
01885 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
01886 SetWindowDirty(WC_VEHICLE_VIEW, front->index);
01887 SetWindowClassesDirty(WC_TRAINS_LIST);
01888 }
01889 } else {
01890
01891 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01892
01893 if (flags & DC_EXEC) {
01894
01895 if (v->current_order.IsType(OT_LOADING)) {
01896 const Vehicle *last = v;
01897 while (last->Next() != NULL) last = last->Next();
01898
01899
01900 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01901 v->LeaveStation();
01902 }
01903 }
01904
01905
01906 v->force_proceed = TFP_NONE;
01907 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01908
01909 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
01910 ToggleBit(v->flags, VRF_REVERSING);
01911 } else {
01912 v->cur_speed = 0;
01913 v->SetLastSpeed();
01914 HideFillingPercent(&v->fill_percent_te_id);
01915 ReverseTrainDirection(v);
01916 }
01917 }
01918 }
01919 return CommandCost();
01920 }
01921
01931 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01932 {
01933 Train *t = Train::GetIfValid(p1);
01934 if (t == NULL) return CMD_ERROR;
01935
01936 CommandCost ret = CheckOwnership(t->owner);
01937 if (ret.Failed()) return ret;
01938
01939
01940 if (flags & DC_EXEC) {
01941
01942
01943
01944
01945
01946 t->force_proceed = t->force_proceed == TFP_SIGNAL ? TFP_NONE : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? TFP_STUCK : TFP_SIGNAL;
01947 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
01948 }
01949
01950 return CommandCost();
01951 }
01952
01960 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
01961 {
01962 assert(!(v->vehstatus & VS_CRASHED));
01963
01964 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
01965
01966 PBSTileInfo origin = FollowTrainReservation(v);
01967 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
01968
01969 switch (_settings_game.pf.pathfinder_for_trains) {
01970 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
01971 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
01972
01973 default: NOT_REACHED();
01974 }
01975 }
01976
01984 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
01985 {
01986 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
01987 if (tfdd.best_length == UINT_MAX) return false;
01988
01989 if (location != NULL) *location = tfdd.tile;
01990 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
01991 if (reverse != NULL) *reverse = tfdd.reverse;
01992
01993 return true;
01994 }
01995
01997 void Train::PlayLeaveStationSound() const
01998 {
01999 static const SoundFx sfx[] = {
02000 SND_04_TRAIN,
02001 SND_0A_TRAIN_HORN,
02002 SND_0A_TRAIN_HORN,
02003 SND_47_MAGLEV_2,
02004 SND_41_MAGLEV
02005 };
02006
02007 if (PlayVehicleSound(this, VSE_START)) return;
02008
02009 EngineID engtype = this->engine_type;
02010 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02011 }
02012
02017 static void CheckNextTrainTile(Train *v)
02018 {
02019
02020 if (_settings_game.pf.path_backoff_interval == 255) return;
02021
02022
02023 if (v->track == TRACK_BIT_DEPOT) return;
02024
02025 switch (v->current_order.GetType()) {
02026
02027 case OT_GOTO_DEPOT:
02028 if (v->tile == v->dest_tile) return;
02029 break;
02030
02031 case OT_GOTO_WAYPOINT:
02032
02033 if (IsRailWaypointTile(v->tile) && GetStationIndex(v->tile) == v->current_order.GetDestination()) ProcessOrders(v);
02034 break;
02035
02036 case OT_NOTHING:
02037 case OT_LEAVESTATION:
02038 case OT_LOADING:
02039
02040 if (v->GetNumOrders() > 0) return;
02041 break;
02042
02043 default:
02044 break;
02045 }
02046
02047 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02048
02049 Trackdir td = v->GetVehicleTrackdir();
02050
02051
02052 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02053 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02054 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02055
02056 CFollowTrackRail ft(v);
02057 if (!ft.Follow(v->tile, td)) return;
02058
02059 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02060
02061 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02062 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02063
02064 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02065 if (_settings_game.pf.forbid_90_deg) {
02066 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02067 }
02068 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02069 }
02070 }
02071 }
02072 }
02073
02079 static bool CheckTrainStayInDepot(Train *v)
02080 {
02081
02082 for (const Train *u = v; u != NULL; u = u->Next()) {
02083 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02084 }
02085
02086
02087 if (v->gcache.cached_power == 0) {
02088 v->vehstatus |= VS_STOPPED;
02089 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02090 return true;
02091 }
02092
02093 SigSegState seg_state;
02094
02095 if (v->force_proceed == TFP_NONE) {
02096
02097 if (++v->wait_counter < 37) {
02098 SetWindowClassesDirty(WC_TRAINS_LIST);
02099 return true;
02100 }
02101
02102 v->wait_counter = 0;
02103
02104 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02105 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02106
02107 SetWindowClassesDirty(WC_TRAINS_LIST);
02108 return true;
02109 }
02110 } else {
02111 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02112 }
02113
02114
02115 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02116
02117 if (HasDepotReservation(v->tile)) return true;
02118 SetDepotReservation(v->tile, true);
02119 VehicleEnterDepot(v);
02120 return true;
02121 }
02122
02123
02124 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == TFP_NONE) {
02125
02126 SetWindowClassesDirty(WC_TRAINS_LIST);
02127 MarkTrainAsStuck(v);
02128 return true;
02129 }
02130
02131 SetDepotReservation(v->tile, true);
02132 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02133
02134 VehicleServiceInDepot(v);
02135 SetWindowClassesDirty(WC_TRAINS_LIST);
02136 v->PlayLeaveStationSound();
02137
02138 v->track = TRACK_BIT_X;
02139 if (v->direction & 2) v->track = TRACK_BIT_Y;
02140
02141 v->vehstatus &= ~VS_HIDDEN;
02142 v->cur_speed = 0;
02143
02144 v->UpdateViewport(true, true);
02145 VehicleUpdatePosition(v);
02146 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02147 v->UpdateAcceleration();
02148 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02149
02150 return false;
02151 }
02152
02159 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02160 {
02161 DiagDirection dir = TrackdirToExitdir(track_dir);
02162
02163 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02164
02165 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02166 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02167
02168 if (TunnelBridgeIsFree(tile, end, v).Succeeded()) {
02169
02170 SetTunnelBridgeReservation(tile, false);
02171 SetTunnelBridgeReservation(end, false);
02172
02173 if (_settings_client.gui.show_track_reservation) {
02174 MarkTileDirtyByTile(tile);
02175 MarkTileDirtyByTile(end);
02176 }
02177 }
02178 }
02179 } else if (IsRailStationTile(tile)) {
02180 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02181
02182
02183 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02184 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02185 }
02186 } else {
02187
02188 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02189 }
02190 }
02191
02198 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02199 {
02200 assert(v->IsFrontEngine());
02201
02202 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02203 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02204 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02205 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02206
02207
02208 if (IsRailDepotTile(tile) && TrackdirToExitdir(td) != GetRailDepotDirection(tile)) return;
02209 if (v->track == TRACK_BIT_DEPOT) {
02210
02211 for (const Train *u = v; u != NULL; u = u->Next()) {
02212 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return;
02213 }
02214 }
02215
02216 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02217
02218 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02219 while (ft.Follow(tile, td)) {
02220 tile = ft.m_new_tile;
02221 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02222 td = RemoveFirstTrackdir(&bits);
02223 assert(bits == TRACKDIR_BIT_NONE);
02224
02225 if (!IsValidTrackdir(td)) break;
02226
02227 if (IsTileType(tile, MP_RAILWAY)) {
02228 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02229
02230 UnreserveRailTrack(tile, TrackdirToTrack(td));
02231 break;
02232 }
02233 if (HasPbsSignalOnTrackdir(tile, td)) {
02234 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02235
02236 break;
02237 } else {
02238
02239 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02240 MarkTileDirtyByTile(tile);
02241 }
02242 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02243 break;
02244 }
02245 }
02246
02247
02248 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);
02249
02250 free_tile = true;
02251 }
02252 }
02253
02254 static const byte _initial_tile_subcoord[6][4][3] = {
02255 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02256 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02257 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02258 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02259 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02260 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02261 };
02262
02275 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found, bool do_track_reservation, PBSTileInfo *dest)
02276 {
02277 switch (_settings_game.pf.pathfinder_for_trains) {
02278 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02279 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_found, do_track_reservation, dest);
02280
02281 default: NOT_REACHED();
02282 }
02283 }
02284
02290 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02291 {
02292 PBSTileInfo origin = FollowTrainReservation(v);
02293
02294 CFollowTrackRail ft(v);
02295
02296 TileIndex tile = origin.tile;
02297 Trackdir cur_td = origin.trackdir;
02298 while (ft.Follow(tile, cur_td)) {
02299 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02300
02301 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02302 }
02303
02304 if (_settings_game.pf.forbid_90_deg) {
02305 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02306 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02307 }
02308
02309
02310 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02311 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02312
02313
02314
02315
02316
02317
02318 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02319
02320
02321
02322 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02323
02324
02325 if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02326 if (enterdir != NULL) *enterdir = ft.m_exitdir;
02327 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02328 }
02329
02330 tile = ft.m_new_tile;
02331 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02332
02333 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02334 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02335 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02336
02337 return PBSTileInfo(tile, cur_td, true);
02338 }
02339
02340 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02341 }
02342
02343 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02344
02345 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02346 }
02347
02348
02349 tile = origin.tile;
02350 cur_td = origin.trackdir;
02351 TileIndex stopped = ft.m_old_tile;
02352 Trackdir stopped_td = ft.m_old_td;
02353 while (tile != stopped || cur_td != stopped_td) {
02354 if (!ft.Follow(tile, cur_td)) break;
02355
02356 if (_settings_game.pf.forbid_90_deg) {
02357 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02358 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02359 }
02360 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02361
02362 tile = ft.m_new_tile;
02363 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02364
02365 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02366 }
02367
02368
02369 return PBSTileInfo();
02370 }
02371
02382 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02383 {
02384 switch (_settings_game.pf.pathfinder_for_trains) {
02385 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02386 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02387
02388 default: NOT_REACHED();
02389 }
02390 }
02391
02393 class VehicleOrderSaver {
02394 private:
02395 Train *v;
02396 Order old_order;
02397 TileIndex old_dest_tile;
02398 StationID old_last_station_visited;
02399 VehicleOrderID index;
02400 bool suppress_implicit_orders;
02401
02402 public:
02403 VehicleOrderSaver(Train *_v) :
02404 v(_v),
02405 old_order(_v->current_order),
02406 old_dest_tile(_v->dest_tile),
02407 old_last_station_visited(_v->last_station_visited),
02408 index(_v->cur_real_order_index),
02409 suppress_implicit_orders(HasBit(_v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS))
02410 {
02411 }
02412
02413 ~VehicleOrderSaver()
02414 {
02415 this->v->current_order = this->old_order;
02416 this->v->dest_tile = this->old_dest_tile;
02417 this->v->last_station_visited = this->old_last_station_visited;
02418 SB(this->v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS, 1, suppress_implicit_orders ? 1: 0);
02419 }
02420
02426 bool SwitchToNextOrder(bool skip_first)
02427 {
02428 if (this->v->GetNumOrders() == 0) return false;
02429
02430 if (skip_first) ++this->index;
02431
02432 int depth = 0;
02433
02434 do {
02435
02436 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02437
02438 Order *order = this->v->GetOrder(this->index);
02439 assert(order != NULL);
02440
02441 switch (order->GetType()) {
02442 case OT_GOTO_DEPOT:
02443
02444 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02445 case OT_GOTO_STATION:
02446 case OT_GOTO_WAYPOINT:
02447 this->v->current_order = *order;
02448 return UpdateOrderDest(this->v, order, 0, true);
02449 case OT_CONDITIONAL: {
02450 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02451 if (next != INVALID_VEH_ORDER_ID) {
02452 depth++;
02453 this->index = next;
02454
02455 continue;
02456 }
02457 break;
02458 }
02459 default:
02460 break;
02461 }
02462
02463
02464 ++this->index;
02465 depth++;
02466 } while (this->index != this->v->cur_real_order_index && depth < this->v->GetNumOrders());
02467
02468 return false;
02469 }
02470 };
02471
02472
02473 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02474 {
02475 Track best_track = INVALID_TRACK;
02476 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02477 bool changed_signal = false;
02478
02479 assert((tracks & ~TRACK_BIT_MASK) == 0);
02480
02481 if (got_reservation != NULL) *got_reservation = false;
02482
02483
02484 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02485
02486 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02487
02488
02489 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02490 Track track = FindFirstTrack(tracks);
02491
02492 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02493 do_track_reservation = true;
02494 changed_signal = true;
02495 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02496 } else if (!do_track_reservation) {
02497 return track;
02498 }
02499 best_track = track;
02500 }
02501
02502 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02503 DiagDirection dest_enterdir = enterdir;
02504 if (do_track_reservation) {
02505 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02506 if (res_dest.tile == INVALID_TILE) {
02507
02508 if (mark_stuck) MarkTrainAsStuck(v);
02509 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02510 return FindFirstTrack(tracks);
02511 }
02512 if (res_dest.okay) {
02513
02514 if (got_reservation != NULL) *got_reservation = true;
02515 if (changed_signal) MarkTileDirtyByTile(tile);
02516 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02517 return best_track;
02518 }
02519
02520
02521
02522
02523 CheckIfTrainNeedsService(v);
02524 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02525 }
02526
02527
02528 VehicleOrderSaver orders(v);
02529
02530
02531
02532
02533
02534
02535
02536 if (v->current_order.IsType(OT_LEAVESTATION)) {
02537 orders.SwitchToNextOrder(false);
02538 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02539 v->current_order.IsType(OT_GOTO_STATION) ?
02540 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02541 v->tile == v->dest_tile))) {
02542 orders.SwitchToNextOrder(true);
02543 }
02544
02545 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02546
02547 bool path_found = true;
02548 TileIndex new_tile = res_dest.tile;
02549
02550 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
02551 if (new_tile == tile) best_track = next_track;
02552 v->HandlePathfindingResult(path_found);
02553 }
02554
02555
02556 if (!do_track_reservation) return best_track;
02557
02558
02559 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02560 if (mark_stuck) MarkTrainAsStuck(v);
02561 FreeTrainTrackReservation(v);
02562 return best_track;
02563 }
02564
02565
02566 if (res_dest.tile == INVALID_TILE) {
02567
02568 PBSTileInfo origin = FollowTrainReservation(v);
02569 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02570 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02571 best_track = FindFirstTrack(res);
02572 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02573 if (got_reservation != NULL) *got_reservation = true;
02574 if (changed_signal) MarkTileDirtyByTile(tile);
02575 } else {
02576 FreeTrainTrackReservation(v);
02577 if (mark_stuck) MarkTrainAsStuck(v);
02578 }
02579 return best_track;
02580 }
02581
02582 if (got_reservation != NULL) *got_reservation = true;
02583
02584
02585 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02586
02587 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02588 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02589 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02590 if (_settings_game.pf.forbid_90_deg) {
02591 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02592 }
02593
02594
02595 if (orders.SwitchToNextOrder(true)) {
02596 PBSTileInfo cur_dest;
02597 bool path_found;
02598 DoTrainPathfind(v, next_tile, exitdir, reachable, path_found, true, &cur_dest);
02599 if (cur_dest.tile != INVALID_TILE) {
02600 res_dest = cur_dest;
02601 if (res_dest.okay) continue;
02602
02603 FreeTrainTrackReservation(v);
02604 if (mark_stuck) MarkTrainAsStuck(v);
02605 if (got_reservation != NULL) *got_reservation = false;
02606 changed_signal = false;
02607 break;
02608 }
02609 }
02610
02611 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02612 FreeTrainTrackReservation(v);
02613 if (mark_stuck) MarkTrainAsStuck(v);
02614 if (got_reservation != NULL) *got_reservation = false;
02615 changed_signal = false;
02616 }
02617 break;
02618 }
02619
02620 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02621
02622 if (changed_signal) MarkTileDirtyByTile(tile);
02623
02624 return best_track;
02625 }
02626
02635 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02636 {
02637 assert(v->IsFrontEngine());
02638
02639
02640
02641
02642 if (v->track == TRACK_BIT_DEPOT) {
02643 if (HasDepotReservation(v->tile)) {
02644 if (mark_as_stuck) MarkTrainAsStuck(v);
02645 return false;
02646 } else {
02647
02648 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02649 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02650 }
02651 }
02652
02653 Vehicle *other_train = NULL;
02654 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02655
02656
02657
02658
02659
02660 if (other_train != NULL && other_train->index != v->index) {
02661 if (mark_as_stuck) MarkTrainAsStuck(v);
02662 return false;
02663 }
02664
02665 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02666
02667 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02668 ClrBit(v->flags, VRF_TRAIN_STUCK);
02669 return true;
02670 }
02671
02672
02673 if (v->track == TRACK_BIT_DEPOT) {
02674 SetDepotReservation(v->tile, true);
02675 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02676 }
02677
02678 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02679 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02680 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02681
02682 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02683
02684 bool res_made = false;
02685 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02686
02687 if (!res_made) {
02688
02689 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02690 return false;
02691 }
02692
02693 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02694 v->wait_counter = 0;
02695 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
02696 }
02697 ClrBit(v->flags, VRF_TRAIN_STUCK);
02698 return true;
02699 }
02700
02701
02702 static bool CheckReverseTrain(const Train *v)
02703 {
02704 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02705 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02706 !(v->direction & 1)) {
02707 return false;
02708 }
02709
02710 assert(v->track != TRACK_BIT_NONE);
02711
02712 switch (_settings_game.pf.pathfinder_for_trains) {
02713 case VPF_NPF: return NPFTrainCheckReverse(v);
02714 case VPF_YAPF: return YapfTrainCheckReverse(v);
02715
02716 default: NOT_REACHED();
02717 }
02718 }
02719
02725 TileIndex Train::GetOrderStationLocation(StationID station)
02726 {
02727 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02728
02729 const Station *st = Station::Get(station);
02730 if (!(st->facilities & FACIL_TRAIN)) {
02731
02732 this->IncrementRealOrderIndex();
02733 return 0;
02734 }
02735
02736 return st->xy;
02737 }
02738
02740 void Train::MarkDirty()
02741 {
02742 Train *v = this;
02743 do {
02744 v->UpdateViewport(false, false);
02745 } while ((v = v->Next()) != NULL);
02746
02747
02748 this->CargoChanged();
02749 this->UpdateAcceleration();
02750 }
02751
02759 int Train::UpdateSpeed()
02760 {
02761 switch (_settings_game.vehicle.train_acceleration_model) {
02762 default: NOT_REACHED();
02763 case AM_ORIGINAL:
02764 return this->DoUpdateSpeed(this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2), 0, min(this->gcache.cached_max_track_speed, this->current_order.max_speed));
02765
02766 case AM_REALISTIC:
02767 return this->DoUpdateSpeed(this->GetAcceleration(), this->GetAccelerationStatus() == AS_BRAKE ? 0 : 2, this->GetCurrentMaxSpeed());
02768 }
02769 }
02770
02776 static void TrainEnterStation(Train *v, StationID station)
02777 {
02778 v->last_station_visited = station;
02779
02780
02781 Station *st = Station::Get(station);
02782 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02783 st->had_vehicle_of_type |= HVOT_TRAIN;
02784 SetDParam(0, st->index);
02785 AddVehicleNewsItem(
02786 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02787 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
02788 v->index,
02789 st->index
02790 );
02791 AI::NewEvent(v->owner, new ScriptEventStationFirstVehicle(st->index, v->index));
02792 Game::NewEvent(new ScriptEventStationFirstVehicle(st->index, v->index));
02793 }
02794
02795 v->force_proceed = TFP_NONE;
02796 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02797
02798 v->BeginLoading();
02799
02800 TriggerStationAnimation(st, v->tile, SAT_TRAIN_ARRIVES);
02801 }
02802
02803
02804 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
02805 {
02806 return IsTileOwner(tile, v->owner) &&
02807 (!v->IsFrontEngine() || HasBit(v->compatible_railtypes, GetRailType(tile)));
02808 }
02809
02811 struct AccelerationSlowdownParams {
02812 byte small_turn;
02813 byte large_turn;
02814 byte z_up;
02815 byte z_down;
02816 };
02817
02819 static const AccelerationSlowdownParams _accel_slowdown[] = {
02820
02821 {256 / 4, 256 / 2, 256 / 4, 2},
02822 {256 / 4, 256 / 2, 256 / 4, 2},
02823 {0, 256 / 2, 256 / 4, 2},
02824 };
02825
02831 static inline void AffectSpeedByZChange(Train *v, int old_z)
02832 {
02833 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
02834
02835 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
02836
02837 if (old_z < v->z_pos) {
02838 v->cur_speed -= (v->cur_speed * asp->z_up >> 8);
02839 } else {
02840 uint16 spd = v->cur_speed + asp->z_down;
02841 if (spd <= v->gcache.cached_max_track_speed) v->cur_speed = spd;
02842 }
02843 }
02844
02845 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
02846 {
02847 if (IsTileType(tile, MP_RAILWAY) &&
02848 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
02849 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
02850 Trackdir trackdir = FindFirstTrackdir(tracks);
02851 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
02852
02853 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
02854 }
02855 }
02856 return false;
02857 }
02858
02860 void Train::ReserveTrackUnderConsist() const
02861 {
02862 for (const Train *u = this; u != NULL; u = u->Next()) {
02863 switch (u->track) {
02864 case TRACK_BIT_WORMHOLE:
02865 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
02866 break;
02867 case TRACK_BIT_DEPOT:
02868 break;
02869 default:
02870 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
02871 break;
02872 }
02873 }
02874 }
02875
02882 uint Train::Crash(bool flooded)
02883 {
02884 uint pass = 0;
02885 if (this->IsFrontEngine()) {
02886 pass += 2;
02887
02888
02889
02890 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
02891 for (const Train *v = this; v != NULL; v = v->Next()) {
02892 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
02893 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
02894
02895
02896 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
02897 }
02898 }
02899
02900
02901
02902 TileIndex crossing = TrainApproachingCrossingTile(this);
02903 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
02904
02905
02906 HideFillingPercent(&this->fill_percent_te_id);
02907 }
02908
02909 pass += this->GroundVehicleBase::Crash(flooded);
02910
02911 this->crash_anim_pos = flooded ? 4000 : 1;
02912 return pass;
02913 }
02914
02921 static uint TrainCrashed(Train *v)
02922 {
02923 uint num = 0;
02924
02925
02926 if (!(v->vehstatus & VS_CRASHED)) {
02927 num = v->Crash();
02928 AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02929 Game::NewEvent(new ScriptEventVehicleCrashed(v->index, v->tile, ScriptEventVehicleCrashed::CRASH_TRAIN));
02930 }
02931
02932
02933
02934 v->ReserveTrackUnderConsist();
02935
02936 return num;
02937 }
02938
02940 struct TrainCollideChecker {
02941 Train *v;
02942 uint num;
02943 };
02944
02951 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
02952 {
02953 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
02954
02955
02956 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
02957
02958
02959 if (v->owner != tcc->v->owner) return NULL;
02960
02961
02962 Train *coll = Train::From(v)->First();
02963
02964
02965 if (coll == tcc->v) return NULL;
02966
02967 int x_diff = v->x_pos - tcc->v->x_pos;
02968 int y_diff = v->y_pos - tcc->v->y_pos;
02969
02970
02971
02972
02973
02974 uint hash = (y_diff + 7) | (x_diff + 7);
02975 if (hash & ~15) return NULL;
02976
02977
02978 int min_diff = (Train::From(v)->gcache.cached_veh_length + 1) / 2 + (tcc->v->gcache.cached_veh_length + 1) / 2 - 1;
02979 if (x_diff * x_diff + y_diff * y_diff > min_diff * min_diff) return NULL;
02980
02981
02982 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
02983
02984
02985 tcc->num += TrainCrashed(tcc->v);
02986 tcc->num += TrainCrashed(coll);
02987
02988 return NULL;
02989 }
02990
02998 static bool CheckTrainCollision(Train *v)
02999 {
03000
03001 if (v->track == TRACK_BIT_DEPOT) return false;
03002
03003 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03004
03005 TrainCollideChecker tcc;
03006 tcc.v = v;
03007 tcc.num = 0;
03008
03009
03010 if (v->track == TRACK_BIT_WORMHOLE) {
03011 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03012 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03013 } else {
03014 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03015 }
03016
03017
03018 if (tcc.num == 0) return false;
03019
03020 SetDParam(0, tcc.num);
03021 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
03022 NS_ACCIDENT,
03023 v->index
03024 );
03025
03026 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03027 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03028 return true;
03029 }
03030
03031 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03032 {
03033 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03034
03035 Train *t = Train::From(v);
03036 DiagDirection exitdir = *(DiagDirection *)data;
03037
03038
03039 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03040
03041 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03042
03043 return t;
03044 }
03045
03053 bool TrainController(Train *v, Vehicle *nomove, bool reverse)
03054 {
03055 Train *first = v->First();
03056 Train *prev;
03057 bool direction_changed = false;
03058
03059
03060 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03061 DiagDirection enterdir = DIAGDIR_BEGIN;
03062 bool update_signals_crossing = false;
03063
03064 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03065 if (v->track != TRACK_BIT_WORMHOLE) {
03066
03067 if (gp.old_tile == gp.new_tile) {
03068
03069 if (v->track == TRACK_BIT_DEPOT) {
03070
03071 gp.x = v->x_pos;
03072 gp.y = v->y_pos;
03073 } else {
03074
03075
03076
03077 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v, reverse)) return false;
03078
03079 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03080 if (HasBit(r, VETS_CANNOT_ENTER)) {
03081 goto invalid_rail;
03082 }
03083 if (HasBit(r, VETS_ENTERED_STATION)) {
03084
03085 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03086 }
03087 }
03088 } else {
03089
03090
03091
03092 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03093 assert(IsValidDiagDirection(enterdir));
03094
03095
03096
03097 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03098 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03099
03100 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03101 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03102
03103 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03104 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03105
03106
03107 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03108 }
03109
03110 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03111
03112
03113
03114 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03115
03116 TrackBits chosen_track;
03117 if (prev == NULL) {
03118
03119
03120 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03121 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03122
03123 if (v->force_proceed != TFP_NONE && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03124
03125
03126
03127
03128 Trackdir dir = FindFirstTrackdir(trackdirbits);
03129 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03130 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03131
03132
03133 v->force_proceed = (v->force_proceed == TFP_SIGNAL) ? TFP_STUCK : TFP_NONE;
03134 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03135 }
03136 }
03137
03138
03139 if ((red_signals & chosen_track) && v->force_proceed == TFP_NONE) {
03140
03141 Trackdir i = FindFirstTrackdir(trackdirbits);
03142
03143
03144 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return false;
03145
03146 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03147 v->cur_speed = 0;
03148 v->subspeed = 0;
03149 v->progress = 255 - 100;
03150 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return false;
03151 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03152 v->cur_speed = 0;
03153 v->subspeed = 0;
03154 v->progress = 255 - 10;
03155 if (!_settings_game.pf.reverse_at_signals || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03156 DiagDirection exitdir = TrackdirToExitdir(i);
03157 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03158
03159 exitdir = ReverseDiagDir(exitdir);
03160
03161
03162 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return false;
03163 }
03164 }
03165
03166
03167
03168
03169
03170 if (!_settings_game.pf.reverse_at_signals && !HasOnewaySignalBlockingTrackdir(gp.new_tile, i) &&
03171 UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03172 v->wait_counter = 0;
03173 return false;
03174 }
03175 goto reverse_train_direction;
03176 } else {
03177 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03178 }
03179 } else {
03180
03181 if (prev->tile == gp.new_tile) {
03182
03183 if (prev->track == TRACK_BIT_WORMHOLE) {
03184
03185
03186 assert(IsTunnel(prev->tile));
03187 chosen_track = bits;
03188 } else {
03189 chosen_track = prev->track;
03190 }
03191 } else {
03192
03193
03194
03195
03196
03197
03198
03199 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03200 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03201 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03202 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03203 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03204 };
03205 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03206 assert(IsValidDiagDirection(exitdir));
03207 chosen_track = _connecting_track[enterdir][exitdir];
03208 }
03209 chosen_track &= bits;
03210 }
03211
03212
03213 assert(
03214 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03215 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03216 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03217
03218
03219 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03220 gp.x = (gp.x & ~0xF) | b[0];
03221 gp.y = (gp.y & ~0xF) | b[1];
03222 Direction chosen_dir = (Direction)b[2];
03223
03224
03225 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03226 if (HasBit(r, VETS_CANNOT_ENTER)) {
03227 goto invalid_rail;
03228 }
03229
03230 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03231 Track track = FindFirstTrack(chosen_track);
03232 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03233 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03234 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03235 MarkTileDirtyByTile(gp.new_tile);
03236 }
03237
03238
03239 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03240
03241 v->tile = gp.new_tile;
03242
03243 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03244 v->First()->ConsistChanged(true);
03245 }
03246
03247 v->track = chosen_track;
03248 assert(v->track);
03249 }
03250
03251
03252
03253 update_signals_crossing = true;
03254
03255 if (chosen_dir != v->direction) {
03256 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03257 const AccelerationSlowdownParams *asp = &_accel_slowdown[GetRailTypeInfo(v->railtype)->acceleration_type];
03258 DirDiff diff = DirDifference(v->direction, chosen_dir);
03259 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? asp->small_turn : asp->large_turn) * v->cur_speed >> 8;
03260 }
03261 direction_changed = true;
03262 v->direction = chosen_dir;
03263 }
03264
03265 if (v->IsFrontEngine()) {
03266 v->wait_counter = 0;
03267
03268
03269 TileIndex crossing = TrainApproachingCrossingTile(v);
03270 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03271
03272
03273 CheckNextTrainTile(v);
03274 }
03275
03276 if (HasBit(r, VETS_ENTERED_STATION)) {
03277
03278 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03279 }
03280 }
03281 } else {
03282
03283
03284
03285 if (!(v->vehstatus & VS_HIDDEN)) {
03286 Train *first = v->First();
03287 first->cur_speed = min(first->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03288 }
03289
03290 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03291
03292 if (v->IsFrontEngine()) {
03293 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03294 CheckNextTrainTile(v);
03295 }
03296
03297
03298 if (gp.old_tile == gp.new_tile) {
03299 gp.old_tile = GetOtherTunnelBridgeEnd(gp.old_tile);
03300 }
03301 } else {
03302 v->x_pos = gp.x;
03303 v->y_pos = gp.y;
03304 VehicleUpdatePosition(v);
03305 if ((v->vehstatus & VS_HIDDEN) == 0) VehicleUpdateViewport(v, true);
03306 continue;
03307 }
03308 }
03309
03310
03311 v->UpdateDeltaXY(v->direction);
03312
03313 v->x_pos = gp.x;
03314 v->y_pos = gp.y;
03315 VehicleUpdatePosition(v);
03316
03317
03318 int old_z = v->UpdateInclination(gp.new_tile != gp.old_tile, false);
03319
03320 if (prev == NULL) {
03321
03322 AffectSpeedByZChange(v, old_z);
03323 }
03324
03325 if (update_signals_crossing) {
03326 if (v->IsFrontEngine()) {
03327 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03328
03329
03330
03331
03332
03333
03334
03335
03336 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03337 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03338 !TryPathReserve(v)) {
03339 MarkTrainAsStuck(v);
03340 }
03341 }
03342 }
03343
03344
03345
03346 if (v->Next() == NULL) {
03347 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03348 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03349 }
03350 }
03351
03352
03353 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03354 }
03355
03356 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03357
03358 return true;
03359
03360 invalid_rail:
03361
03362 if (prev != NULL) error("Disconnecting train");
03363
03364 reverse_train_direction:
03365 if (reverse) {
03366 v->wait_counter = 0;
03367 v->cur_speed = 0;
03368 v->subspeed = 0;
03369 ReverseTrainDirection(v);
03370 }
03371
03372 return false;
03373 }
03374
03381 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03382 {
03383 TrackBits *trackbits = (TrackBits *)data;
03384
03385 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03386 TrackBits train_tbits = Train::From(v)->track;
03387 if (train_tbits == TRACK_BIT_WORMHOLE) {
03388
03389 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03390 } else if (train_tbits != TRACK_BIT_DEPOT) {
03391 *trackbits |= train_tbits;
03392 }
03393 }
03394
03395 return NULL;
03396 }
03397
03405 static void DeleteLastWagon(Train *v)
03406 {
03407 Train *first = v->First();
03408
03409
03410
03411
03412 Train *u = v;
03413 for (; v->Next() != NULL; v = v->Next()) u = v;
03414 u->SetNext(NULL);
03415
03416 if (first != v) {
03417
03418 first->ConsistChanged(false);
03419
03420
03421 if (first->track == TRACK_BIT_DEPOT) {
03422 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03423 }
03424 }
03425
03426
03427 TrackBits trackbits = v->track;
03428 TileIndex tile = v->tile;
03429 Owner owner = v->owner;
03430
03431 delete v;
03432 v = NULL;
03433
03434 if (trackbits == TRACK_BIT_WORMHOLE) {
03435
03436 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03437 }
03438
03439 Track track = TrackBitsToTrack(trackbits);
03440 if (HasReservedTracks(tile, trackbits)) {
03441 UnreserveRailTrack(tile, track);
03442
03443
03444 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03445 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03446
03447
03448 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03449 Track t;
03450 FOR_EACH_SET_TRACK(t, remaining_trackbits) TryReserveRailTrack(tile, t);
03451 }
03452
03453
03454 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03455
03456
03457 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03458 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03459 } else {
03460 SetSignalsOnBothDir(tile, track, owner);
03461 }
03462 }
03463
03468 static void ChangeTrainDirRandomly(Train *v)
03469 {
03470 static const DirDiff delta[] = {
03471 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03472 };
03473
03474 do {
03475
03476 if (!(v->vehstatus & VS_HIDDEN)) {
03477 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03478 v->UpdateDeltaXY(v->direction);
03479 v->cur_image = v->GetImage(v->direction, EIT_ON_MAP);
03480
03481
03482
03483 if (v->track != TRACK_BIT_WORMHOLE) {
03484 VehicleUpdatePosition(v);
03485 v->UpdateInclination(false, false);
03486 }
03487 }
03488 } while ((v = v->Next()) != NULL);
03489 }
03490
03496 static bool HandleCrashedTrain(Train *v)
03497 {
03498 int state = ++v->crash_anim_pos;
03499
03500 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03501 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03502 }
03503
03504 uint32 r;
03505 if (state <= 200 && Chance16R(1, 7, r)) {
03506 int index = (r * 10 >> 16);
03507
03508 Vehicle *u = v;
03509 do {
03510 if (--index < 0) {
03511 r = Random();
03512
03513 CreateEffectVehicleRel(u,
03514 GB(r, 8, 3) + 2,
03515 GB(r, 16, 3) + 2,
03516 GB(r, 0, 3) + 5,
03517 EV_EXPLOSION_SMALL);
03518 break;
03519 }
03520 } while ((u = u->Next()) != NULL);
03521 }
03522
03523 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03524
03525 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03526 bool ret = v->Next() != NULL;
03527 DeleteLastWagon(v);
03528 return ret;
03529 }
03530
03531 return true;
03532 }
03533
03535 static const uint16 _breakdown_speeds[16] = {
03536 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03537 };
03538
03539
03548 static bool TrainApproachingLineEnd(Train *v, bool signal, bool reverse)
03549 {
03550
03551 uint x = v->x_pos & 0xF;
03552 uint y = v->y_pos & 0xF;
03553
03554
03555
03556 switch (v->direction) {
03557 case DIR_N : x = ~x + ~y + 25; break;
03558 case DIR_NW: x = y;
03559 case DIR_NE: x = ~x + 16; break;
03560 case DIR_E : x = ~x + y + 9; break;
03561 case DIR_SE: x = y; break;
03562 case DIR_S : x = x + y - 7; break;
03563 case DIR_W : x = ~y + x + 9; break;
03564 default: break;
03565 }
03566
03567
03568
03569
03570
03571
03572 if (!signal && x + (v->gcache.cached_veh_length + 1) / 2 * (IsDiagonalDirection(v->direction) ? 1 : 2) >= TILE_SIZE) {
03573
03574 v->cur_speed = 0;
03575 if (reverse) ReverseTrainDirection(v);
03576 return false;
03577 }
03578
03579
03580 v->vehstatus |= VS_TRAIN_SLOWING;
03581 uint16 break_speed = _breakdown_speeds[x & 0xF];
03582 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03583
03584 return true;
03585 }
03586
03587
03593 static bool TrainCanLeaveTile(const Train *v)
03594 {
03595
03596 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03597
03598 TileIndex tile = v->tile;
03599
03600
03601 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03602 DiagDirection dir = GetTunnelBridgeDirection(tile);
03603 if (DiagDirToDir(dir) == v->direction) return false;
03604 }
03605
03606
03607 if (IsRailDepotTile(tile)) {
03608 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03609 if (DiagDirToDir(dir) == v->direction) return false;
03610 }
03611
03612 return true;
03613 }
03614
03615
03623 static TileIndex TrainApproachingCrossingTile(const Train *v)
03624 {
03625 assert(v->IsFrontEngine());
03626 assert(!(v->vehstatus & VS_CRASHED));
03627
03628 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03629
03630 DiagDirection dir = TrainExitDir(v->direction, v->track);
03631 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03632
03633
03634 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03635 !CheckCompatibleRail(v, tile)) {
03636 return INVALID_TILE;
03637 }
03638
03639 return tile;
03640 }
03641
03642
03650 static bool TrainCheckIfLineEnds(Train *v, bool reverse)
03651 {
03652
03653
03654 int t = v->breakdown_ctr;
03655 if (t > 1) {
03656 v->vehstatus |= VS_TRAIN_SLOWING;
03657
03658 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03659 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03660 } else {
03661 v->vehstatus &= ~VS_TRAIN_SLOWING;
03662 }
03663
03664 if (!TrainCanLeaveTile(v)) return true;
03665
03666
03667 DiagDirection dir = TrainExitDir(v->direction, v->track);
03668
03669 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03670
03671
03672 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03673 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03674
03675 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03676 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03677
03678
03679
03680
03681 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03682 if (_settings_game.pf.forbid_90_deg) {
03683 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03684 }
03685
03686
03687 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03688 return TrainApproachingLineEnd(v, false, reverse);
03689 }
03690
03691
03692 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true, reverse);
03693
03694
03695 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03696
03697 return true;
03698 }
03699
03700
03701 static bool TrainLocoHandler(Train *v, bool mode)
03702 {
03703
03704 if (v->vehstatus & VS_CRASHED) {
03705 return mode ? true : HandleCrashedTrain(v);
03706 }
03707
03708 if (v->force_proceed != TFP_NONE) {
03709 ClrBit(v->flags, VRF_TRAIN_STUCK);
03710 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03711 }
03712
03713
03714 if (v->HandleBreakdown()) return true;
03715
03716 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03717 ReverseTrainDirection(v);
03718 }
03719
03720
03721 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03722
03723 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03724 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03725 v->wait_counter = 0;
03726 v->cur_speed = 0;
03727 v->subspeed = 0;
03728 ClrBit(v->flags, VRF_LEAVING_STATION);
03729 ReverseTrainDirection(v);
03730 return true;
03731 } else if (HasBit(v->flags, VRF_LEAVING_STATION)) {
03732
03733
03734
03735 DiagDirection dir = TrainExitDir(v->direction, v->track);
03736 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
03737
03738 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
03739 TryPathReserve(v, true, true);
03740 }
03741 ClrBit(v->flags, VRF_LEAVING_STATION);
03742 }
03743
03744 v->HandleLoading(mode);
03745
03746 if (v->current_order.IsType(OT_LOADING)) return true;
03747
03748 if (CheckTrainStayInDepot(v)) return true;
03749
03750 if (!mode) v->ShowVisualEffect();
03751
03752
03753 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03754 CheckNextTrainTile(v);
03755 }
03756
03757
03758 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03759 ++v->wait_counter;
03760
03761
03762 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.reverse_at_signals;
03763
03764 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == TFP_NONE) return true;
03765 if (!TryPathReserve(v)) {
03766
03767 if (turn_around) ReverseTrainDirection(v);
03768
03769 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03770
03771 if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
03772 SetDParam(0, v->index);
03773 AddVehicleNewsItem(
03774 STR_NEWS_TRAIN_IS_STUCK,
03775 NS_ADVICE,
03776 v->index
03777 );
03778 }
03779 v->wait_counter = 0;
03780 }
03781
03782 if (v->force_proceed == TFP_NONE) return true;
03783 ClrBit(v->flags, VRF_TRAIN_STUCK);
03784 v->wait_counter = 0;
03785 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03786 }
03787 }
03788
03789 if (v->current_order.IsType(OT_LEAVESTATION)) {
03790 v->current_order.Free();
03791 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03792 return true;
03793 }
03794
03795 int j = v->UpdateSpeed();
03796
03797
03798 if (v->cur_speed == 0 && (v->vehstatus & VS_STOPPED)) {
03799
03800 v->force_proceed = TFP_NONE;
03801 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03802 }
03803
03804 int adv_spd = v->GetAdvanceDistance();
03805 if (j < adv_spd) {
03806
03807 if (v->cur_speed == 0) v->SetLastSpeed();
03808 } else {
03809 TrainCheckIfLineEnds(v);
03810
03811 for (;;) {
03812 j -= adv_spd;
03813 TrainController(v, NULL);
03814
03815 if (CheckTrainCollision(v)) break;
03816
03817 adv_spd = v->GetAdvanceDistance();
03818
03819
03820 if (j < adv_spd || v->cur_speed == 0) break;
03821
03822 OrderType order_type = v->current_order.GetType();
03823
03824 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
03825 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
03826 IsTileType(v->tile, MP_STATION) &&
03827 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
03828 ProcessOrders(v);
03829 }
03830 }
03831 v->SetLastSpeed();
03832 }
03833
03834 for (Train *u = v; u != NULL; u = u->Next()) {
03835 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
03836
03837 u->UpdateViewport(false, false);
03838 }
03839
03840 if (v->progress == 0) v->progress = j;
03841
03842 return true;
03843 }
03844
03849 Money Train::GetRunningCost() const
03850 {
03851 Money cost = 0;
03852 const Train *v = this;
03853
03854 do {
03855 const Engine *e = v->GetEngine();
03856 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
03857
03858 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
03859 if (cost_factor == 0) continue;
03860
03861
03862 if (v->IsMultiheaded()) cost_factor /= 2;
03863
03864 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
03865 } while ((v = v->GetNextVehicle()) != NULL);
03866
03867 return cost;
03868 }
03869
03874 bool Train::Tick()
03875 {
03876 this->tick_counter++;
03877
03878 if (this->IsFrontEngine()) {
03879 if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
03880
03881 this->current_order_time++;
03882
03883 if (!TrainLocoHandler(this, false)) return false;
03884
03885 return TrainLocoHandler(this, true);
03886 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
03887
03888 if (++this->crash_anim_pos >= 4400) {
03889 delete this;
03890 return false;
03891 }
03892 }
03893
03894 return true;
03895 }
03896
03901 static void CheckIfTrainNeedsService(Train *v)
03902 {
03903 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
03904 if (v->IsInDepot()) {
03905 VehicleServiceInDepot(v);
03906 return;
03907 }
03908
03909 uint max_penalty;
03910 switch (_settings_game.pf.pathfinder_for_trains) {
03911 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
03912 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
03913 default: NOT_REACHED();
03914 }
03915
03916 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
03917
03918 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
03919 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
03920
03921
03922
03923 v->current_order.MakeDummy();
03924 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03925 }
03926 return;
03927 }
03928
03929 DepotID depot = GetDepotIndex(tfdd.tile);
03930
03931 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
03932 v->current_order.GetDestination() != depot &&
03933 !Chance16(3, 16)) {
03934 return;
03935 }
03936
03937 SetBit(v->gv_flags, GVF_SUPPRESS_IMPLICIT_ORDERS);
03938 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
03939 v->dest_tile = tfdd.tile;
03940 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
03941 }
03942
03944 void Train::OnNewDay()
03945 {
03946 AgeVehicle(this);
03947
03948 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
03949
03950 if (this->IsFrontEngine()) {
03951 CheckVehicleBreakdown(this);
03952
03953 CheckIfTrainNeedsService(this);
03954
03955 CheckOrders(this);
03956
03957
03958 if (this->current_order.IsType(OT_GOTO_STATION)) {
03959 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
03960 if (tile != INVALID_TILE) this->dest_tile = tile;
03961 }
03962
03963 if (this->running_ticks != 0) {
03964
03965 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
03966
03967 this->profit_this_year -= cost.GetCost();
03968 this->running_ticks = 0;
03969
03970 SubtractMoneyFromCompanyFract(this->owner, cost);
03971
03972 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
03973 SetWindowClassesDirty(WC_TRAINS_LIST);
03974 }
03975 }
03976 }
03977
03982 Trackdir Train::GetVehicleTrackdir() const
03983 {
03984 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
03985
03986 if (this->track == TRACK_BIT_DEPOT) {
03987
03988 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
03989 }
03990
03991 if (this->track == TRACK_BIT_WORMHOLE) {
03992
03993 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
03994 }
03995
03996 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
03997 }