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00012 #include "stdafx.h"
00013 #include "gui.h"
00014 #include "articulated_vehicles.h"
00015 #include "command_func.h"
00016 #include "pathfinder/npf/npf_func.h"
00017 #include "pathfinder/yapf/yapf.hpp"
00018 #include "news_func.h"
00019 #include "company_func.h"
00020 #include "vehicle_gui.h"
00021 #include "newgrf_engine.h"
00022 #include "newgrf_sound.h"
00023 #include "newgrf_text.h"
00024 #include "group.h"
00025 #include "table/sprites.h"
00026 #include "strings_func.h"
00027 #include "functions.h"
00028 #include "window_func.h"
00029 #include "vehicle_func.h"
00030 #include "sound_func.h"
00031 #include "autoreplace_gui.h"
00032 #include "ai/ai.hpp"
00033 #include "newgrf_station.h"
00034 #include "effectvehicle_func.h"
00035 #include "effectvehicle_base.h"
00036 #include "gamelog.h"
00037 #include "network/network.h"
00038 #include "spritecache.h"
00039 #include "core/random_func.hpp"
00040 #include "company_base.h"
00041 #include "engine_base.h"
00042 #include "engine_func.h"
00043 #include "newgrf.h"
00044
00045 #include "table/strings.h"
00046 #include "table/train_cmd.h"
00047
00048 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00049 static bool TrainCheckIfLineEnds(Train *v);
00050 static void TrainController(Train *v, Vehicle *nomove);
00051 static TileIndex TrainApproachingCrossingTile(const Train *v);
00052 static void CheckIfTrainNeedsService(Train *v);
00053 static void CheckNextTrainTile(Train *v);
00054
00055 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00056 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00057
00058
00066 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00067 {
00068 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00069
00070 DiagDirection diagdir = DirToDiagDir(direction);
00071
00072
00073 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00074 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00075 }
00076
00077 return diagdir;
00078 }
00079
00080
00085 byte FreightWagonMult(CargoID cargo)
00086 {
00087 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00088 return _settings_game.vehicle.freight_trains;
00089 }
00090
00091
00095 void Train::PowerChanged()
00096 {
00097 assert(this->First() == this);
00098
00099 uint32 total_power = 0;
00100 uint32 max_te = 0;
00101 uint32 number_of_parts = 0;
00102 uint16 max_rail_speed = this->tcache.cached_max_speed;
00103
00104 for (const Train *u = this; u != NULL; u = u->Next()) {
00105 uint32 current_power = u->GetPower();
00106 total_power += current_power;
00107
00108
00109 if (current_power > 0) max_te += u->GetWeight() * u->GetTractiveEffort();
00110 total_power += u->GetPoweredPartPower(this);
00111 number_of_parts++;
00112
00113
00114 uint16 rail_speed = GetRailTypeInfo(GetRailType(u->tile))->max_speed;
00115 if (rail_speed > 0) max_rail_speed = min(max_rail_speed, rail_speed);
00116 }
00117
00118 this->tcache.cached_axle_resistance = 60 * number_of_parts;
00119 this->tcache.cached_air_drag = 20 + 3 * number_of_parts;
00120
00121 max_te *= 10000;
00122 max_te /= 256;
00123 if (this->tcache.cached_power != total_power || this->tcache.cached_max_te != max_te) {
00124
00125 if (total_power == 0) this->vehstatus |= VS_STOPPED;
00126
00127 this->tcache.cached_power = total_power;
00128 this->tcache.cached_max_te = max_te;
00129 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00130 SetWindowWidgetDirty(WC_VEHICLE_VIEW, this->index, VVW_WIDGET_START_STOP_VEH);
00131 }
00132
00133 this->tcache.cached_max_rail_speed = max_rail_speed;
00134 }
00135
00136
00141 void Train::CargoChanged()
00142 {
00143 assert(this->First() == this);
00144 uint32 weight = 0;
00145
00146 for (Train *u = this; u != NULL; u = u->Next()) {
00147 uint32 current_weight = u->GetWeight();
00148 weight += current_weight;
00149 u->tcache.cached_slope_resistance = current_weight * u->GetSlopeSteepness();
00150 }
00151
00152
00153 this->tcache.cached_weight = weight;
00154
00155
00156 this->PowerChanged();
00157 }
00158
00159
00164 static void RailVehicleLengthChanged(const Train *u)
00165 {
00166
00167 const Engine *engine = Engine::Get(u->engine_type);
00168 uint32 grfid = engine->grffile->grfid;
00169 GRFConfig *grfconfig = GetGRFConfig(grfid);
00170 if (GamelogGRFBugReverse(grfid, engine->internal_id) || !HasBit(grfconfig->grf_bugs, GBUG_VEH_LENGTH)) {
00171 ShowNewGrfVehicleError(u->engine_type, STR_NEWGRF_BROKEN, STR_NEWGRF_BROKEN_VEHICLE_LENGTH, GBUG_VEH_LENGTH, true);
00172 }
00173 }
00174
00176 void CheckTrainsLengths()
00177 {
00178 const Train *v;
00179
00180 FOR_ALL_TRAINS(v) {
00181 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00182 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00183 if (u->track != TRACK_BIT_DEPOT) {
00184 if ((w->track != TRACK_BIT_DEPOT &&
00185 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->tcache.cached_veh_length) ||
00186 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00187 SetDParam(0, v->index);
00188 SetDParam(1, v->owner);
00189 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, 0, 0, true);
00190
00191 if (!_networking) DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00192 }
00193 }
00194 }
00195 }
00196 }
00197 }
00198
00205 void Train::ConsistChanged(bool same_length)
00206 {
00207 uint16 max_speed = UINT16_MAX;
00208
00209 assert(this->IsFrontEngine() || this->IsFreeWagon());
00210
00211 const RailVehicleInfo *rvi_v = RailVehInfo(this->engine_type);
00212 EngineID first_engine = this->IsFrontEngine() ? this->engine_type : INVALID_ENGINE;
00213 this->tcache.cached_total_length = 0;
00214 this->compatible_railtypes = RAILTYPES_NONE;
00215
00216 bool train_can_tilt = true;
00217
00218 for (Train *u = this; u != NULL; u = u->Next()) {
00219 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00220
00221
00222 assert(u->First() == this);
00223
00224
00225 u->tcache.first_engine = this == u ? INVALID_ENGINE : first_engine;
00226 u->railtype = rvi_u->railtype;
00227
00228 if (u->IsEngine()) first_engine = u->engine_type;
00229
00230
00231 u->tcache.user_def_data = rvi_u->user_def_data;
00232 this->InvalidateNewGRFCache();
00233 u->InvalidateNewGRFCache();
00234 }
00235
00236 for (Train *u = this; u != NULL; u = u->Next()) {
00237
00238 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00239 this->InvalidateNewGRFCache();
00240 u->InvalidateNewGRFCache();
00241 }
00242
00243 for (Train *u = this; u != NULL; u = u->Next()) {
00244 const Engine *e_u = Engine::Get(u->engine_type);
00245 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00246
00247 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00248
00249
00250 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->tcache.first_engine);
00251
00252
00253 u->colourmap = PAL_NONE;
00254
00255 if (rvi_u->visual_effect != 0) {
00256 u->tcache.cached_vis_effect = rvi_u->visual_effect;
00257 } else {
00258 if (u->IsWagon() || u->IsArticulatedPart()) {
00259
00260 u->tcache.cached_vis_effect = 0x40;
00261 } else if (rvi_u->engclass == 0) {
00262
00263 u->tcache.cached_vis_effect = 4;
00264 } else {
00265
00266 u->tcache.cached_vis_effect = 8;
00267 }
00268 }
00269
00270
00271 if (HasBit(e_u->info.callback_mask, CBM_TRAIN_WAGON_POWER)) {
00272 uint16 callback = GetVehicleCallback(CBID_TRAIN_WAGON_POWER, 0, 0, u->engine_type, u);
00273
00274 if (callback != CALLBACK_FAILED) u->tcache.cached_vis_effect = GB(callback, 0, 8);
00275 }
00276
00277 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00278 UsesWagonOverride(u) && !HasBit(u->tcache.cached_vis_effect, 7)) {
00279
00280 SetBit(u->flags, VRF_POWEREDWAGON);
00281 } else {
00282 ClrBit(u->flags, VRF_POWEREDWAGON);
00283 }
00284
00285 if (!u->IsArticulatedPart()) {
00286
00287
00288 if (rvi_u->power > 0) {
00289 this->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00290 }
00291
00292
00293
00294 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00295 u->railtype = RAILTYPE_RAIL;
00296 u->compatible_railtypes |= RAILTYPES_RAIL;
00297 }
00298
00299
00300 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00301 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00302 if (speed != 0) max_speed = min(speed, max_speed);
00303 }
00304 }
00305
00306 u->cargo_cap = GetVehicleCapacity(u);
00307
00308
00309 uint16 veh_len = CALLBACK_FAILED;
00310 if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00311 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00312 }
00313 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00314 veh_len = 8 - Clamp(veh_len, 0, 7);
00315
00316
00317 if (same_length && veh_len != u->tcache.cached_veh_length) RailVehicleLengthChanged(u);
00318
00319
00320 if (!same_length) u->tcache.cached_veh_length = veh_len;
00321
00322 this->tcache.cached_total_length += u->tcache.cached_veh_length;
00323 this->InvalidateNewGRFCache();
00324 u->InvalidateNewGRFCache();
00325 }
00326
00327
00328 this->tcache.cached_max_speed = max_speed;
00329 this->tcache.cached_tilt = train_can_tilt;
00330 this->tcache.cached_max_curve_speed = this->GetCurveSpeedLimit();
00331
00332
00333 this->CargoChanged();
00334
00335 if (this->IsFrontEngine()) {
00336 this->UpdateAcceleration();
00337 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
00338 }
00339 }
00340
00351 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00352 {
00353 const Station *st = Station::Get(station_id);
00354 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00355 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00356
00357
00358
00359 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00360 if (v->tcache.cached_total_length >= *station_length) {
00361
00362 osl = OSL_PLATFORM_FAR_END;
00363 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00364 osl = v->current_order.GetStopLocation();
00365 }
00366
00367
00368 int stop;
00369 switch (osl) {
00370 default: NOT_REACHED();
00371
00372 case OSL_PLATFORM_NEAR_END:
00373 stop = v->tcache.cached_total_length;
00374 break;
00375
00376 case OSL_PLATFORM_MIDDLE:
00377 stop = *station_length - (*station_length - v->tcache.cached_total_length) / 2;
00378 break;
00379
00380 case OSL_PLATFORM_FAR_END:
00381 stop = *station_length;
00382 break;
00383 }
00384
00385
00386
00387 return stop - (v->tcache.cached_veh_length + 1) / 2;
00388 }
00389
00390
00395 int Train::GetCurveSpeedLimit() const
00396 {
00397 assert(this->First() == this);
00398
00399 static const int absolute_max_speed = UINT16_MAX;
00400 int max_speed = absolute_max_speed;
00401
00402 if (_settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) return max_speed;
00403
00404 int curvecount[2] = {0, 0};
00405
00406
00407 int numcurve = 0;
00408 int sum = 0;
00409 int pos = 0;
00410 int lastpos = -1;
00411 for (const Vehicle *u = this; u->Next() != NULL; u = u->Next(), pos++) {
00412 Direction this_dir = u->direction;
00413 Direction next_dir = u->Next()->direction;
00414
00415 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00416 if (dirdiff == DIRDIFF_SAME) continue;
00417
00418 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00419 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00420 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00421 if (lastpos != -1) {
00422 numcurve++;
00423 sum += pos - lastpos;
00424 if (pos - lastpos == 1) {
00425 max_speed = 88;
00426 }
00427 }
00428 lastpos = pos;
00429 }
00430
00431
00432 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00433 max_speed = 61;
00434 }
00435 }
00436
00437 if (numcurve > 0 && max_speed > 88) {
00438 if (curvecount[0] == 1 && curvecount[1] == 1) {
00439 max_speed = absolute_max_speed;
00440 } else {
00441 sum /= numcurve;
00442 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00443 }
00444 }
00445
00446 if (max_speed != absolute_max_speed) {
00447
00448 const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
00449 max_speed += (max_speed / 2) * rti->curve_speed;
00450
00451 if (this->tcache.cached_tilt) {
00452
00453 max_speed += max_speed / 5;
00454 }
00455 }
00456
00457 return max_speed;
00458 }
00459
00464 int Train::GetCurrentMaxSpeed() const
00465 {
00466 int max_speed = this->tcache.cached_max_curve_speed;
00467 assert(max_speed == this->GetCurveSpeedLimit());
00468
00469 if (IsRailStationTile(this->tile)) {
00470 StationID sid = GetStationIndex(this->tile);
00471 if (this->current_order.ShouldStopAtStation(this, sid)) {
00472 int station_ahead;
00473 int station_length;
00474 int stop_at = GetTrainStopLocation(sid, this->tile, this, &station_ahead, &station_length);
00475
00476
00477
00478 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00479
00480 if (distance_to_go > 0) {
00481 int st_max_speed = 120;
00482
00483 int delta_v = this->cur_speed / (distance_to_go + 1);
00484 if (this->max_speed > (this->cur_speed - delta_v)) {
00485 st_max_speed = this->cur_speed - (delta_v / 10);
00486 }
00487
00488 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00489 max_speed = min(max_speed, st_max_speed);
00490 }
00491 }
00492 }
00493
00494 for (const Train *u = this; u != NULL; u = u->Next()) {
00495 if (u->track == TRACK_BIT_DEPOT) {
00496 max_speed = min(max_speed, 61);
00497 break;
00498 }
00499 }
00500
00501 return min(max_speed, this->tcache.cached_max_rail_speed);
00502 }
00503
00509 int Train::GetAcceleration() const
00510 {
00511 int32 speed = this->GetCurrentSpeed();
00512
00513
00514 int32 mass = this->tcache.cached_weight;
00515
00516
00517 int32 power = this->tcache.cached_power * 746;
00518
00519 int32 resistance = 0;
00520
00521 bool maglev = this->GetAccelerationType() == 2;
00522
00523 const int area = 120;
00524 if (!maglev) {
00525 resistance = (13 * mass) / 10;
00526 resistance += this->tcache.cached_axle_resistance;
00527 resistance += (this->GetRollingFriction() * mass * speed) / 1000;
00528 resistance += (area * this->tcache.cached_air_drag * speed * speed) / 10000;
00529 } else {
00530 resistance += (area * this->tcache.cached_air_drag * speed * speed) / 20000;
00531 }
00532
00533 resistance += this->GetSlopeResistance();
00534 resistance *= 4;
00535
00536
00537 AccelStatus mode = this->GetAccelerationStatus();
00538
00539 const int max_te = this->tcache.cached_max_te;
00540 int force;
00541 if (speed > 0) {
00542 if (!maglev) {
00543 force = power / speed;
00544 force *= 22;
00545 force /= 10;
00546 if (mode == AS_ACCEL && force > max_te) force = max_te;
00547 } else {
00548 force = power / 25;
00549 }
00550 } else {
00551
00552 force = (mode == AS_ACCEL && !maglev) ? min(max_te, power) : power;
00553 force = max(force, (mass * 8) + resistance);
00554 }
00555
00556 if (mode == AS_ACCEL) {
00557 return (force - resistance) / (mass * 2);
00558 } else {
00559 return min(-force - resistance, -10000) / mass;
00560 }
00561 }
00562
00563 void Train::UpdateAcceleration()
00564 {
00565 assert(this->IsFrontEngine());
00566
00567 this->max_speed = this->tcache.cached_max_rail_speed;
00568
00569 uint power = this->tcache.cached_power;
00570 uint weight = this->tcache.cached_weight;
00571 assert(weight != 0);
00572 this->acceleration = Clamp(power / weight * 4, 1, 255);
00573 }
00574
00580 int Train::GetDisplayImageWidth(Point *offset) const
00581 {
00582 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00583 int vehicle_pitch = 0;
00584
00585 const Engine *e = Engine::Get(this->engine_type);
00586 if (e->grffile != NULL && is_custom_sprite(e->u.rail.image_index)) {
00587 reference_width = e->grffile->traininfo_vehicle_width;
00588 vehicle_pitch = e->grffile->traininfo_vehicle_pitch;
00589 }
00590
00591 if (offset != NULL) {
00592 offset->x = reference_width / 2;
00593 offset->y = vehicle_pitch;
00594 }
00595 return this->tcache.cached_veh_length * reference_width / 8;
00596 }
00597
00598 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00599 {
00600 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00601 }
00602
00603 SpriteID Train::GetImage(Direction direction) const
00604 {
00605 uint8 spritenum = this->spritenum;
00606 SpriteID sprite;
00607
00608 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00609
00610 if (is_custom_sprite(spritenum)) {
00611 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)));
00612 if (sprite != 0) return sprite;
00613
00614 spritenum = Engine::Get(this->engine_type)->original_image_index;
00615 }
00616
00617 sprite = GetDefaultTrainSprite(spritenum, direction);
00618
00619 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00620
00621 return sprite;
00622 }
00623
00624 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y)
00625 {
00626 const Engine *e = Engine::Get(engine);
00627 Direction dir = rear_head ? DIR_E : DIR_W;
00628 uint8 spritenum = e->u.rail.image_index;
00629
00630 if (is_custom_sprite(spritenum)) {
00631 SpriteID sprite = GetCustomVehicleIcon(engine, dir);
00632 if (sprite != 0) {
00633 if (e->grffile != NULL) {
00634 y += e->grffile->traininfo_vehicle_pitch;
00635 }
00636 return sprite;
00637 }
00638
00639 spritenum = Engine::Get(engine)->original_image_index;
00640 }
00641
00642 if (rear_head) spritenum++;
00643
00644 return GetDefaultTrainSprite(spritenum, DIR_W);
00645 }
00646
00647 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal)
00648 {
00649 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00650 int yf = y;
00651 int yr = y;
00652
00653 SpriteID spritef = GetRailIcon(engine, false, yf);
00654 SpriteID spriter = GetRailIcon(engine, true, yr);
00655 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00656 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00657
00658 preferred_x = Clamp(preferred_x, left - real_spritef->x_offs + 14, right - real_spriter->width - real_spriter->x_offs - 15);
00659
00660 DrawSprite(spritef, pal, preferred_x - 14, yf);
00661 DrawSprite(spriter, pal, preferred_x + 15, yr);
00662 } else {
00663 SpriteID sprite = GetRailIcon(engine, false, y);
00664 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00665 preferred_x = Clamp(preferred_x, left - real_sprite->x_offs, right - real_sprite->width - real_sprite->x_offs);
00666 DrawSprite(sprite, pal, preferred_x, y);
00667 }
00668 }
00669
00670 static CommandCost CmdBuildRailWagon(EngineID engine, TileIndex tile, DoCommandFlag flags)
00671 {
00672 const Engine *e = Engine::Get(engine);
00673 const RailVehicleInfo *rvi = &e->u.rail;
00674 CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
00675
00676
00677 if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
00678
00679 if (flags & DC_QUERY_COST) return value;
00680
00681
00682 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00683
00684 uint num_vehicles = 1 + CountArticulatedParts(engine, false);
00685
00686
00687 if (!Vehicle::CanAllocateItem(num_vehicles)) {
00688 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00689 }
00690
00691 if (flags & DC_EXEC) {
00692 Train *v = new Train();
00693 v->spritenum = rvi->image_index;
00694
00695 v->engine_type = engine;
00696 v->tcache.first_engine = INVALID_ENGINE;
00697
00698 DiagDirection dir = GetRailDepotDirection(tile);
00699
00700 v->direction = DiagDirToDir(dir);
00701 v->tile = tile;
00702
00703 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00704 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00705
00706 v->x_pos = x;
00707 v->y_pos = y;
00708 v->z_pos = GetSlopeZ(x, y);
00709 v->owner = _current_company;
00710 v->track = TRACK_BIT_DEPOT;
00711 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00712
00713
00714 v->SetWagon();
00715
00716 v->SetFreeWagon();
00717 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00718
00719 v->cargo_type = e->GetDefaultCargoType();
00720
00721 v->cargo_cap = rvi->capacity;
00722 v->value = value.GetCost();
00723
00724
00725 v->railtype = rvi->railtype;
00726
00727 v->build_year = _cur_year;
00728 v->cur_image = SPR_IMG_QUERY;
00729 v->random_bits = VehicleRandomBits();
00730
00731 v->group_id = DEFAULT_GROUP;
00732
00733 AddArticulatedParts(v);
00734
00735 _new_vehicle_id = v->index;
00736
00737 VehicleMove(v, false);
00738 v->First()->ConsistChanged(false);
00739 UpdateTrainGroupID(v->First());
00740
00741 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
00742 if (IsLocalCompany()) {
00743 InvalidateAutoreplaceWindow(v->engine_type, v->group_id);
00744 }
00745 Company::Get(_current_company)->num_engines[engine]++;
00746
00747 CheckConsistencyOfArticulatedVehicle(v);
00748
00749
00750 Train *w;
00751 FOR_ALL_TRAINS(w) {
00752 if (w->tile == tile &&
00753 w->IsFreeWagon() &&
00754 w->engine_type == engine &&
00755 w->First() != v &&
00756 !(w->vehstatus & VS_CRASHED)) {
00757 DoCommand(0, v->index | (w->Last()->index << 16), 1, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00758 break;
00759 }
00760 }
00761 }
00762
00763 return value;
00764 }
00765
00767 static void NormalizeTrainVehInDepot(const Train *u)
00768 {
00769 const Train *v;
00770 FOR_ALL_TRAINS(v) {
00771 if (v->IsFreeWagon() && v->tile == u->tile &&
00772 v->track == TRACK_BIT_DEPOT) {
00773 if (DoCommand(0, v->index | (u->index << 16), 1, DC_EXEC,
00774 CMD_MOVE_RAIL_VEHICLE).Failed())
00775 break;
00776 }
00777 }
00778 }
00779
00780 static void AddRearEngineToMultiheadedTrain(Train *v)
00781 {
00782 Train *u = new Train();
00783 v->value >>= 1;
00784 u->value = v->value;
00785 u->direction = v->direction;
00786 u->owner = v->owner;
00787 u->tile = v->tile;
00788 u->x_pos = v->x_pos;
00789 u->y_pos = v->y_pos;
00790 u->z_pos = v->z_pos;
00791 u->track = TRACK_BIT_DEPOT;
00792 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00793
00794 u->spritenum = v->spritenum + 1;
00795 u->cargo_type = v->cargo_type;
00796 u->cargo_subtype = v->cargo_subtype;
00797 u->cargo_cap = v->cargo_cap;
00798 u->railtype = v->railtype;
00799 u->engine_type = v->engine_type;
00800 u->build_year = v->build_year;
00801 u->cur_image = SPR_IMG_QUERY;
00802 u->random_bits = VehicleRandomBits();
00803 v->SetMultiheaded();
00804 u->SetMultiheaded();
00805 v->SetNext(u);
00806 VehicleMove(u, false);
00807
00808
00809 v->other_multiheaded_part = u;
00810 u->other_multiheaded_part = v;
00811 }
00812
00821 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00822 {
00823
00824 if (!IsEngineBuildable(p1, VEH_TRAIN, _current_company)) return_cmd_error(STR_ERROR_RAIL_VEHICLE_NOT_AVAILABLE);
00825
00826 const Engine *e = Engine::Get(p1);
00827 const RailVehicleInfo *rvi = &e->u.rail;
00828 CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
00829
00830
00831 if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
00832
00833 if (flags & DC_QUERY_COST) return value;
00834
00835
00836
00837 if (!IsRailDepotTile(tile)) return CMD_ERROR;
00838 if (!IsTileOwner(tile, _current_company)) return CMD_ERROR;
00839
00840 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(p1, tile, flags);
00841
00842 uint num_vehicles =
00843 (rvi->railveh_type == RAILVEH_MULTIHEAD ? 2 : 1) +
00844 CountArticulatedParts(p1, false);
00845
00846
00847
00848 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00849
00850
00851 if (!Vehicle::CanAllocateItem(num_vehicles)) {
00852 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00853 }
00854
00855 UnitID unit_num = (flags & DC_AUTOREPLACE) ? 0 : GetFreeUnitNumber(VEH_TRAIN);
00856 if (unit_num > _settings_game.vehicle.max_trains) {
00857 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00858 }
00859
00860 if (flags & DC_EXEC) {
00861 DiagDirection dir = GetRailDepotDirection(tile);
00862 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00863 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00864
00865 Train *v = new Train();
00866 v->unitnumber = unit_num;
00867 v->direction = DiagDirToDir(dir);
00868 v->tile = tile;
00869 v->owner = _current_company;
00870 v->x_pos = x;
00871 v->y_pos = y;
00872 v->z_pos = GetSlopeZ(x, y);
00873
00874 v->track = TRACK_BIT_DEPOT;
00875 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00876 v->spritenum = rvi->image_index;
00877 v->cargo_type = e->GetDefaultCargoType();
00878
00879 v->cargo_cap = rvi->capacity;
00880 v->max_speed = rvi->max_speed;
00881 v->value = value.GetCost();
00882 v->last_station_visited = INVALID_STATION;
00883
00884
00885 v->engine_type = p1;
00886 v->tcache.first_engine = INVALID_ENGINE;
00887
00888 v->reliability = e->reliability;
00889 v->reliability_spd_dec = e->reliability_spd_dec;
00890 v->max_age = e->GetLifeLengthInDays();
00891
00892 v->name = NULL;
00893 v->railtype = rvi->railtype;
00894 _new_vehicle_id = v->index;
00895
00896 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00897 v->date_of_last_service = _date;
00898 v->build_year = _cur_year;
00899 v->cur_image = SPR_IMG_QUERY;
00900 v->random_bits = VehicleRandomBits();
00901
00902
00903 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00904
00905 v->group_id = DEFAULT_GROUP;
00906
00907
00908 v->SetFrontEngine();
00909 v->SetEngine();
00910
00911 VehicleMove(v, false);
00912
00913 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00914 AddRearEngineToMultiheadedTrain(v);
00915 } else {
00916 AddArticulatedParts(v);
00917 }
00918
00919 v->ConsistChanged(false);
00920 UpdateTrainGroupID(v);
00921
00922 if (!HasBit(p2, 1) && !(flags & DC_AUTOREPLACE)) {
00923 NormalizeTrainVehInDepot(v);
00924 }
00925
00926 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00927 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
00928 SetWindowDirty(WC_COMPANY, v->owner);
00929 if (IsLocalCompany()) {
00930 InvalidateAutoreplaceWindow(v->engine_type, v->group_id);
00931 }
00932
00933 Company::Get(_current_company)->num_engines[p1]++;
00934
00935 CheckConsistencyOfArticulatedVehicle(v);
00936 }
00937
00938 return value;
00939 }
00940
00941
00942 bool Train::IsInDepot() const
00943 {
00944
00945 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00946
00947
00948 for (const Train *v = this; v != NULL; v = v->Next()) {
00949 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00950 }
00951
00952 return true;
00953 }
00954
00955 bool Train::IsStoppedInDepot() const
00956 {
00957
00958 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00959 return this->IsInDepot();
00960 }
00961
00962 static Train *FindGoodVehiclePos(const Train *src)
00963 {
00964 EngineID eng = src->engine_type;
00965 TileIndex tile = src->tile;
00966
00967 Train *dst;
00968 FOR_ALL_TRAINS(dst) {
00969 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00970
00971 Train *t = dst;
00972 while (t->engine_type == eng) {
00973 t = t->Next();
00974 if (t == NULL) return dst;
00975 }
00976 }
00977 }
00978
00979 return NULL;
00980 }
00981
00983 typedef SmallVector<Train *, 16> TrainList;
00984
00990 static void MakeTrainBackup(TrainList &list, Train *t)
00991 {
00992 for (; t != NULL; t = t->Next()) *list.Append() = t;
00993 }
00994
00999 static void RestoreTrainBackup(TrainList &list)
01000 {
01001
01002 if (list.Length() == 0) return;
01003
01004 Train *prev = NULL;
01005
01006 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
01007 Train *t = *iter;
01008 if (prev != NULL) {
01009 prev->SetNext(t);
01010 } else if (t->Previous() != NULL) {
01011
01012 t->Previous()->SetNext(NULL);
01013 }
01014 prev = t;
01015 }
01016 }
01017
01023 static void RemoveFromConsist(Train *part, bool chain = false)
01024 {
01025 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
01026
01027
01028
01029 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
01030
01031
01032 tail->SetNext(NULL);
01033 }
01034
01040 static void InsertInConsist(Train *dst, Train *chain)
01041 {
01042
01043 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
01044
01045 chain->Last()->SetNext(dst->Next());
01046 dst->SetNext(chain);
01047 }
01048
01054 static void NormaliseDualHeads(Train *t)
01055 {
01056 for (; t != NULL; t = t->GetNextVehicle()) {
01057 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
01058
01059
01060 Train *u;
01061 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
01062
01063 if (u == t->other_multiheaded_part) continue;
01064
01065
01066 RemoveFromConsist(t->other_multiheaded_part);
01067
01068 InsertInConsist(u, t->other_multiheaded_part);
01069 }
01070 }
01071
01076 static void NormaliseSubtypes(Train *chain)
01077 {
01078
01079 if (chain == NULL) return;
01080
01081
01082 assert(chain->Previous() == NULL);
01083
01084
01085 if (chain->IsWagon()) {
01086 chain->SetFreeWagon();
01087 } else {
01088 assert(chain->IsEngine());
01089 chain->SetFrontEngine();
01090 }
01091
01092
01093 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
01094 t->ClearFreeWagon();
01095 t->ClearFrontEngine();
01096 }
01097 }
01098
01108 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
01109 {
01110
01111
01112
01113 if ((src != NULL && src->IsEngine() ? 1 : 0) +
01114 (dst != NULL && dst->IsEngine() ? 1 : 0) -
01115 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
01116 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
01117 return CommandCost();
01118 }
01119
01120
01121
01122 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
01123
01124 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
01125 }
01126
01132 static CommandCost CheckTrainAttachment(Train *t)
01133 {
01134
01135 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
01136
01137
01138
01139 int allowed_len = _settings_game.vehicle.mammoth_trains ? 100 : 10;
01140
01141 Train *head = t;
01142 Train *prev = t;
01143
01144
01145 t = t->Next();
01146 allowed_len--;
01147 prev->SetNext(NULL);
01148
01149
01150 head->InvalidateNewGRFCache();
01151
01152 while (t != NULL) {
01153 Train *next = t->Next();
01154
01155
01156
01157 t->SetNext(NULL);
01158
01159
01160 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
01161 allowed_len--;
01162
01163
01164 EngineID first_engine = t->tcache.first_engine;
01165 t->tcache.first_engine = INVALID_ENGINE;
01166
01167
01168
01169 t->InvalidateNewGRFCache();
01170
01171 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
01172
01173
01174 t->tcache.first_engine = first_engine;
01175
01176
01177 t->InvalidateNewGRFCache();
01178 head->InvalidateNewGRFCache();
01179
01180 if (callback != CALLBACK_FAILED) {
01181
01182 StringID error = STR_NULL;
01183
01184 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01185 if (callback < 0xFD) error = GetGRFStringID(GetEngineGRFID(head->engine_type), 0xD000 + callback);
01186
01187 if (error != STR_NULL) return_cmd_error(error);
01188 }
01189 }
01190
01191
01192 prev->SetNext(t);
01193 prev = t;
01194 t = next;
01195 }
01196
01197 if (allowed_len <= 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01198 return CommandCost();
01199 }
01200
01210 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src)
01211 {
01212
01213 CommandCost ret = CheckTrainAttachment(src);
01214 if (ret.Failed()) return ret;
01215 ret = CheckTrainAttachment(dst);
01216 if (ret.Failed()) return ret;
01217
01218
01219 return CheckNewTrain(original_dst, dst, original_src, src);
01220 }
01221
01230 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01231 {
01232
01233 if (*src_head == *dst_head) {
01234
01235
01236 *dst_head = NULL;
01237 } else if (*dst_head == NULL) {
01238
01239
01240 *dst_head = src;
01241 }
01242
01243 if (src == *src_head) {
01244
01245
01246
01247
01248
01249
01250 *src_head = move_chain ? NULL :
01251 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01252 }
01253
01254
01255
01256
01257 RemoveFromConsist(src, move_chain);
01258 if (*dst_head != src) InsertInConsist(dst, src);
01259
01260
01261
01262 NormaliseDualHeads(*src_head);
01263 NormaliseDualHeads(*dst_head);
01264 }
01265
01271 static void NormaliseTrainHead(Train *head)
01272 {
01273
01274 if (head == NULL) return;
01275
01276
01277 head->ConsistChanged(false);
01278 UpdateTrainGroupID(head);
01279
01280
01281 if (!head->IsFrontEngine()) return;
01282
01283
01284 SetWindowDirty(WC_VEHICLE_REFIT, head->index);
01285 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, VVW_WIDGET_REFIT_VEH);
01286
01287
01288 if (head->unitnumber != 0) return;
01289 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01290 }
01291
01303 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01304 {
01305 VehicleID s = GB(p1, 0, 16);
01306 VehicleID d = GB(p1, 16, 16);
01307 bool move_chain = HasBit(p2, 0);
01308
01309 Train *src = Train::GetIfValid(s);
01310 if (src == NULL || !CheckOwnership(src->owner)) return CMD_ERROR;
01311
01312
01313 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01314
01315
01316 Train *dst;
01317 if (d == INVALID_VEHICLE) {
01318 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01319 } else {
01320 dst = Train::GetIfValid(d);
01321 if (dst == NULL || !CheckOwnership(dst->owner)) return CMD_ERROR;
01322
01323
01324 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01325 }
01326
01327
01328 src = src->GetFirstEnginePart();
01329 if (dst != NULL) {
01330 dst = dst->GetFirstEnginePart();
01331 }
01332
01333
01334 if (src == dst) return CommandCost();
01335
01336
01337 Train *src_head = src->First();
01338 Train *dst_head;
01339 if (dst != NULL) {
01340 dst_head = dst->First();
01341 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01342
01343 dst = dst->GetLastEnginePart();
01344 } else {
01345 dst_head = NULL;
01346 }
01347
01348 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01349
01350
01351 if (move_chain && src_head == dst_head) return CommandCost();
01352
01353
01354 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01355
01356
01357 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01358
01359
01360 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01361
01362
01363
01364 TrainList original_src;
01365 TrainList original_dst;
01366
01367 MakeTrainBackup(original_src, src_head);
01368 MakeTrainBackup(original_dst, dst_head);
01369
01370
01371
01372
01373 Train *original_src_head = src_head;
01374 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01375
01376
01377 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01378
01379 if ((flags & DC_AUTOREPLACE) == 0) {
01380
01381
01382
01383 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head);
01384 if (ret.Failed()) {
01385
01386 RestoreTrainBackup(original_src);
01387 RestoreTrainBackup(original_dst);
01388 return ret;
01389 }
01390 }
01391
01392
01393 if (flags & DC_EXEC) {
01394
01395 NormaliseSubtypes(src_head);
01396 NormaliseSubtypes(dst_head);
01397
01398
01399
01400
01401
01402
01403
01404
01405
01406
01407
01408
01409
01410
01411
01412
01413
01414
01415
01416
01417
01418 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01419
01420 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01421 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01422 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01423 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01424 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01425
01426
01427
01428
01429
01430
01431
01432
01433 if (dst_head != NULL ? dst_head != src : !src_head->IsFrontEngine()) {
01434 DecreaseGroupNumVehicle(src->group_id);
01435 }
01436
01437
01438
01439 DeleteVehicleOrders(src);
01440 RemoveVehicleFromGroup(src);
01441 src->unitnumber = 0;
01442 }
01443
01444
01445
01446 if (original_src_head != src && dst_head == src) {
01447 SetTrainGroupID(src, DEFAULT_GROUP);
01448 }
01449
01450
01451 NormaliseTrainHead(src_head);
01452 NormaliseTrainHead(dst_head);
01453
01454
01455 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01456 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01457 } else {
01458
01459 RestoreTrainBackup(original_src);
01460 RestoreTrainBackup(original_dst);
01461 }
01462
01463 return CommandCost();
01464 }
01465
01477 CommandCost CmdSellRailWagon(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01478 {
01479
01480 Window *w = NULL;
01481
01482 Train *v = Train::GetIfValid(p1);
01483 if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
01484
01485
01486 bool sell_chain = HasBit(p2, 0);
01487
01488 if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_CAN_T_SELL_DESTROYED_VEHICLE);
01489
01490 v = v->GetFirstEnginePart();
01491 Train *first = v->First();
01492
01493
01494 if (!first->IsStoppedInDepot()) {
01495 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01496 }
01497
01498 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01499
01500
01501
01502 TrainList original;
01503 MakeTrainBackup(original, first);
01504
01505
01506 Train *new_head = first;
01507 Train *sell_head = NULL;
01508
01509
01510 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01511
01512
01513 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head);
01514 if (ret.Failed()) {
01515
01516 RestoreTrainBackup(original);
01517 return ret;
01518 }
01519
01520 CommandCost cost(EXPENSES_NEW_VEHICLES);
01521 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01522
01523
01524 if (flags & DC_EXEC) {
01525
01526 NormaliseSubtypes(new_head);
01527
01528 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01529
01530
01531 new_head->orders.list = first->orders.list;
01532 new_head->AddToShared(first);
01533 DeleteVehicleOrders(first);
01534
01535
01536 new_head->CopyVehicleConfigAndStatistics(first);
01537 IncreaseGroupNumVehicle(new_head->group_id);
01538
01539
01540 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01541 }
01542
01543
01544 NormaliseTrainHead(new_head);
01545
01546
01547 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01548 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01549
01550
01551 delete sell_head;
01552 } else {
01553
01554 RestoreTrainBackup(original);
01555 }
01556
01557 return cost;
01558 }
01559
01560 void Train::UpdateDeltaXY(Direction direction)
01561 {
01562 #define MKIT(a, b, c, d) ((a & 0xFF) << 24) | ((b & 0xFF) << 16) | ((c & 0xFF) << 8) | ((d & 0xFF) << 0)
01563 static const uint32 _delta_xy_table[8] = {
01564 MKIT(3, 3, -1, -1),
01565 MKIT(3, 7, -1, -3),
01566 MKIT(3, 3, -1, -1),
01567 MKIT(7, 3, -3, -1),
01568 MKIT(3, 3, -1, -1),
01569 MKIT(3, 7, -1, -3),
01570 MKIT(3, 3, -1, -1),
01571 MKIT(7, 3, -3, -1),
01572 };
01573 #undef MKIT
01574
01575 uint32 x = _delta_xy_table[direction];
01576 this->x_offs = GB(x, 0, 8);
01577 this->y_offs = GB(x, 8, 8);
01578 this->x_extent = GB(x, 16, 8);
01579 this->y_extent = GB(x, 24, 8);
01580 this->z_extent = 6;
01581 }
01582
01583 static inline void SetLastSpeed(Train *v, int spd)
01584 {
01585 int old = v->tcache.last_speed;
01586 if (spd != old) {
01587 v->tcache.last_speed = spd;
01588 if (_settings_client.gui.vehicle_speed || (old == 0) != (spd == 0)) {
01589 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01590 }
01591 }
01592 }
01593
01595 static void MarkTrainAsStuck(Train *v)
01596 {
01597 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01598
01599 SetBit(v->flags, VRF_TRAIN_STUCK);
01600
01601 v->wait_counter = 0;
01602
01603
01604 v->cur_speed = 0;
01605 v->subspeed = 0;
01606 SetLastSpeed(v, 0);
01607
01608 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01609 }
01610 }
01611
01612 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01613 {
01614 uint16 flag1 = *swap_flag1;
01615 uint16 flag2 = *swap_flag2;
01616
01617
01618 ClrBit(*swap_flag1, VRF_GOINGUP);
01619 ClrBit(*swap_flag1, VRF_GOINGDOWN);
01620 ClrBit(*swap_flag2, VRF_GOINGUP);
01621 ClrBit(*swap_flag2, VRF_GOINGDOWN);
01622
01623
01624 if (HasBit(flag1, VRF_GOINGUP)) {
01625 SetBit(*swap_flag2, VRF_GOINGDOWN);
01626 } else if (HasBit(flag1, VRF_GOINGDOWN)) {
01627 SetBit(*swap_flag2, VRF_GOINGUP);
01628 }
01629 if (HasBit(flag2, VRF_GOINGUP)) {
01630 SetBit(*swap_flag1, VRF_GOINGDOWN);
01631 } else if (HasBit(flag2, VRF_GOINGDOWN)) {
01632 SetBit(*swap_flag1, VRF_GOINGUP);
01633 }
01634 }
01635
01636 static void ReverseTrainSwapVeh(Train *v, int l, int r)
01637 {
01638 Train *a, *b;
01639
01640
01641 for (a = v; l != 0; l--) a = a->Next();
01642 for (b = v; r != 0; r--) b = b->Next();
01643
01644 if (a != b) {
01645
01646 {
01647 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus&VS_HIDDEN);
01648 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus&VS_HIDDEN);
01649 a->vehstatus = tmp;
01650 }
01651
01652 Swap(a->track, b->track);
01653 Swap(a->direction, b->direction);
01654
01655
01656 if (a->track != TRACK_BIT_DEPOT) a->direction = ReverseDir(a->direction);
01657 if (b->track != TRACK_BIT_DEPOT) b->direction = ReverseDir(b->direction);
01658
01659 Swap(a->x_pos, b->x_pos);
01660 Swap(a->y_pos, b->y_pos);
01661 Swap(a->tile, b->tile);
01662 Swap(a->z_pos, b->z_pos);
01663
01664 SwapTrainFlags(&a->flags, &b->flags);
01665
01666
01667 a->UpdateViewport(true, true);
01668 b->UpdateViewport(true, true);
01669
01670
01671 if (a->track != TRACK_BIT_WORMHOLE) VehicleEnterTile(a, a->tile, a->x_pos, a->y_pos);
01672 if (b->track != TRACK_BIT_WORMHOLE) VehicleEnterTile(b, b->tile, b->x_pos, b->y_pos);
01673 } else {
01674 if (a->track != TRACK_BIT_DEPOT) a->direction = ReverseDir(a->direction);
01675 a->UpdateViewport(true, true);
01676
01677 if (a->track != TRACK_BIT_WORMHOLE) VehicleEnterTile(a, a->tile, a->x_pos, a->y_pos);
01678 }
01679
01680
01681 v->PowerChanged();
01682 }
01683
01684
01690 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01691 {
01692 return (v->type == VEH_TRAIN) ? v : NULL;
01693 }
01694
01695
01702 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01703 {
01704 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01705
01706 Train *t = Train::From(v);
01707 if (!t->IsFrontEngine()) return NULL;
01708
01709 TileIndex tile = *(TileIndex *)data;
01710
01711 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01712
01713 return t;
01714 }
01715
01716
01723 static bool TrainApproachingCrossing(TileIndex tile)
01724 {
01725 assert(IsLevelCrossingTile(tile));
01726
01727 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01728 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01729
01730 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01731
01732 dir = ReverseDiagDir(dir);
01733 tile_from = tile + TileOffsByDiagDir(dir);
01734
01735 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01736 }
01737
01738
01745 void UpdateLevelCrossing(TileIndex tile, bool sound)
01746 {
01747 assert(IsLevelCrossingTile(tile));
01748
01749
01750 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01751
01752 if (new_state != IsCrossingBarred(tile)) {
01753 if (new_state && sound) {
01754 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01755 }
01756 SetCrossingBarred(tile, new_state);
01757 MarkTileDirtyByTile(tile);
01758 }
01759 }
01760
01761
01767 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01768 {
01769 if (!IsCrossingBarred(tile)) {
01770 BarCrossing(tile);
01771 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01772 MarkTileDirtyByTile(tile);
01773 }
01774 }
01775
01776
01782 static void AdvanceWagonsBeforeSwap(Train *v)
01783 {
01784 Train *base = v;
01785 Train *first = base;
01786 Train *last = v->Last();
01787 uint length = CountVehiclesInChain(v);
01788
01789 while (length > 2) {
01790 last = last->Previous();
01791 first = first->Next();
01792
01793 int differential = base->tcache.cached_veh_length - last->tcache.cached_veh_length;
01794
01795
01796
01797 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01798
01799 base = first;
01800 length -= 2;
01801 }
01802 }
01803
01804
01810 static void AdvanceWagonsAfterSwap(Train *v)
01811 {
01812
01813 Train *dep = v;
01814 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01815 dep = dep->Next();
01816 }
01817
01818 Train *leave = dep->Next();
01819
01820 if (leave != NULL) {
01821
01822 int d = TicksToLeaveDepot(dep);
01823
01824 if (d <= 0) {
01825 leave->vehstatus &= ~VS_HIDDEN;
01826 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01827 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01828 }
01829 } else {
01830 dep = NULL;
01831 }
01832
01833 Train *base = v;
01834 Train *first = base;
01835 Train *last = v->Last();
01836 uint length = CountVehiclesInChain(v);
01837
01838
01839
01840 bool nomove = (dep == NULL);
01841
01842 while (length > 2) {
01843
01844
01845 if (base == dep) break;
01846
01847
01848 if (last == dep) nomove = true;
01849
01850 last = last->Previous();
01851 first = first->Next();
01852
01853 int differential = last->tcache.cached_veh_length - base->tcache.cached_veh_length;
01854
01855
01856 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01857
01858 base = first;
01859 length -= 2;
01860 }
01861 }
01862
01863
01864 static void ReverseTrainDirection(Train *v)
01865 {
01866 if (IsRailDepotTile(v->tile)) {
01867 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01868 }
01869
01870
01871 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01872
01873
01874 TileIndex crossing = TrainApproachingCrossingTile(v);
01875
01876
01877 int r = CountVehiclesInChain(v) - 1;
01878
01879 AdvanceWagonsBeforeSwap(v);
01880
01881
01882 int l = 0;
01883 do {
01884 ReverseTrainSwapVeh(v, l++, r--);
01885 } while (l <= r);
01886
01887 AdvanceWagonsAfterSwap(v);
01888
01889 if (IsRailDepotTile(v->tile)) {
01890 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01891 }
01892
01893 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01894
01895 ClrBit(v->flags, VRF_REVERSING);
01896
01897
01898 v->ConsistChanged(true);
01899
01900
01901 for (Vehicle *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01902
01903
01904 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01905
01906
01907 crossing = TrainApproachingCrossingTile(v);
01908 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01909
01910
01911 if (v->track == TRACK_BIT_DEPOT) {
01912
01913 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01914 ClrBit(v->flags, VRF_TRAIN_STUCK);
01915 return;
01916 }
01917
01918
01919
01920 DiagDirection dir = TrainExitDir(v->direction, v->track);
01921 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01922
01923 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01924
01925
01926 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01927 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01928 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01929
01930 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01931 if (TryPathReserve(v, false, first_tile_okay)) {
01932
01933 CheckNextTrainTile(v);
01934 } else if (v->current_order.GetType() != OT_LOADING) {
01935
01936 MarkTrainAsStuck(v);
01937 }
01938 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01939
01940 ClrBit(v->flags, VRF_TRAIN_STUCK);
01941 v->wait_counter = 0;
01942 }
01943 }
01944
01953 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01954 {
01955 Train *v = Train::GetIfValid(p1);
01956 if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
01957
01958 if (p2 != 0) {
01959
01960
01961 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01962 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01963 }
01964
01965 Train *front = v->First();
01966
01967 if (!front->IsStoppedInDepot()) {
01968 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01969 }
01970
01971 if (flags & DC_EXEC) {
01972 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01973 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
01974 SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
01975
01976 v->force_proceed = 0;
01977 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01978 }
01979 } else {
01980
01981 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
01982
01983 if (flags & DC_EXEC) {
01984
01985 if (v->current_order.IsType(OT_LOADING)) {
01986 const Vehicle *last = v;
01987 while (last->Next() != NULL) last = last->Next();
01988
01989
01990 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
01991 v->LeaveStation();
01992 }
01993 }
01994
01995
01996 v->force_proceed = 0;
01997 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01998
01999 if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && v->cur_speed != 0) {
02000 ToggleBit(v->flags, VRF_REVERSING);
02001 } else {
02002 v->cur_speed = 0;
02003 SetLastSpeed(v, 0);
02004 HideFillingPercent(&v->fill_percent_te_id);
02005 ReverseTrainDirection(v);
02006 }
02007 }
02008 }
02009 return CommandCost();
02010 }
02011
02020 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02021 {
02022 Train *t = Train::GetIfValid(p1);
02023 if (t == NULL || !CheckOwnership(t->owner)) return CMD_ERROR;
02024
02025 if (flags & DC_EXEC) {
02026
02027
02028
02029
02030
02031 t->force_proceed = t->force_proceed == 2 ? 0 : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? 1 : 2;
02032 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
02033 }
02034
02035 return CommandCost();
02036 }
02037
02049 CommandCost CmdRefitRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02050 {
02051 CargoID new_cid = GB(p2, 0, 8);
02052 byte new_subtype = GB(p2, 8, 8);
02053 bool only_this = HasBit(p2, 16);
02054
02055 Train *v = Train::GetIfValid(p1);
02056 if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
02057
02058 if (!v->IsStoppedInDepot()) return_cmd_error(STR_TRAIN_MUST_BE_STOPPED);
02059 if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_CAN_T_REFIT_DESTROYED_VEHICLE);
02060
02061
02062 if (new_cid >= NUM_CARGO) return CMD_ERROR;
02063
02064 CommandCost cost = RefitVehicle(v, only_this, new_cid, new_subtype, flags);
02065
02066
02067 if (flags & DC_EXEC) {
02068 Train *front = v->First();
02069 front->ConsistChanged(false);
02070 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
02071 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
02072 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
02073 } else {
02074 v->InvalidateNewGRFCacheOfChain();
02075 }
02076
02077 return cost;
02078 }
02079
02082 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
02083 {
02084 assert(!(v->vehstatus & VS_CRASHED));
02085
02086 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
02087
02088 PBSTileInfo origin = FollowTrainReservation(v);
02089 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
02090
02091 switch (_settings_game.pf.pathfinder_for_trains) {
02092 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
02093 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
02094
02095 default: NOT_REACHED();
02096 }
02097 }
02098
02099 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02100 {
02101 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02102 if (tfdd.best_length == UINT_MAX) return false;
02103
02104 if (location != NULL) *location = tfdd.tile;
02105 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02106 if (reverse != NULL) *reverse = tfdd.reverse;
02107
02108 return true;
02109 }
02110
02121 CommandCost CmdSendTrainToDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02122 {
02123 if (p2 & DEPOT_MASS_SEND) {
02124
02125 if (!ValidVLWFlags(p2 & VLW_MASK)) return CMD_ERROR;
02126 return SendAllVehiclesToDepot(VEH_TRAIN, flags, p2 & DEPOT_SERVICE, _current_company, (p2 & VLW_MASK), p1);
02127 }
02128
02129 Train *v = Train::GetIfValid(p1);
02130 if (v == NULL) return CMD_ERROR;
02131
02132 return v->SendToDepot(flags, (DepotCommand)(p2 & DEPOT_COMMAND_MASK));
02133 }
02134
02135 static const int8 _vehicle_smoke_pos[8] = {
02136 1, 1, 1, 0, -1, -1, -1, 0
02137 };
02138
02139 static void HandleLocomotiveSmokeCloud(const Train *v)
02140 {
02141 bool sound = false;
02142
02143 if ((v->vehstatus & VS_TRAIN_SLOWING) || v->cur_speed < 2) {
02144 return;
02145 }
02146
02147 const Train *u = v;
02148
02149 do {
02150 const RailVehicleInfo *rvi = RailVehInfo(v->engine_type);
02151 int effect_offset = GB(v->tcache.cached_vis_effect, 0, 4) - 8;
02152 byte effect_type = GB(v->tcache.cached_vis_effect, 4, 2);
02153 bool disable_effect = HasBit(v->tcache.cached_vis_effect, 6);
02154
02155
02156 if ((rvi->railveh_type == RAILVEH_WAGON && effect_type == 0) ||
02157 disable_effect ||
02158 v->vehstatus & VS_HIDDEN) {
02159 continue;
02160 }
02161
02162
02163 if (IsRailDepotTile(v->tile) || IsTunnelTile(v->tile)) continue;
02164
02165
02166 if (!HasPowerOnRail(v->railtype, GetTileRailType(v->tile))) continue;
02167
02168 if (effect_type == 0) {
02169
02170 effect_type = rvi->engclass;
02171 } else {
02172 effect_type--;
02173 }
02174
02175 int x = _vehicle_smoke_pos[v->direction] * effect_offset;
02176 int y = _vehicle_smoke_pos[(v->direction + 2) % 8] * effect_offset;
02177
02178 if (HasBit(v->flags, VRF_REVERSE_DIRECTION)) {
02179 x = -x;
02180 y = -y;
02181 }
02182
02183 switch (effect_type) {
02184 case 0:
02185
02186 if (GB(v->tick_counter, 0, 4) == 0) {
02187 CreateEffectVehicleRel(v, x, y, 10, EV_STEAM_SMOKE);
02188 sound = true;
02189 }
02190 break;
02191
02192 case 1:
02193
02194 if (u->cur_speed <= 40 && Chance16(15, 128)) {
02195 CreateEffectVehicleRel(v, 0, 0, 10, EV_DIESEL_SMOKE);
02196 sound = true;
02197 }
02198 break;
02199
02200 case 2:
02201
02202 if (GB(v->tick_counter, 0, 2) == 0 && Chance16(1, 45)) {
02203 CreateEffectVehicleRel(v, 0, 0, 10, EV_ELECTRIC_SPARK);
02204 sound = true;
02205 }
02206 break;
02207
02208 default:
02209 break;
02210 }
02211 } while ((v = v->Next()) != NULL);
02212
02213 if (sound) PlayVehicleSound(u, VSE_TRAIN_EFFECT);
02214 }
02215
02216 void Train::PlayLeaveStationSound() const
02217 {
02218 static const SoundFx sfx[] = {
02219 SND_04_TRAIN,
02220 SND_0A_TRAIN_HORN,
02221 SND_0A_TRAIN_HORN,
02222 SND_47_MAGLEV_2,
02223 SND_41_MAGLEV
02224 };
02225
02226 if (PlayVehicleSound(this, VSE_START)) return;
02227
02228 EngineID engtype = this->engine_type;
02229 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02230 }
02231
02233 static void CheckNextTrainTile(Train *v)
02234 {
02235
02236 if (_settings_game.pf.path_backoff_interval == 255) return;
02237
02238
02239 if ((v->tile == v->dest_tile && v->current_order.IsType(OT_GOTO_DEPOT)) || v->track == TRACK_BIT_DEPOT) return;
02240
02241 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02242
02243 if ((v->current_order.IsType(OT_NOTHING) || v->current_order.IsType(OT_LEAVESTATION) || v->current_order.IsType(OT_LOADING)) && v->GetNumOrders() > 0) return;
02244
02245 Trackdir td = v->GetVehicleTrackdir();
02246
02247
02248 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02249 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02250 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02251
02252 CFollowTrackRail ft(v);
02253 if (!ft.Follow(v->tile, td)) return;
02254
02255 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02256
02257 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02258 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02259
02260 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02261 if (_settings_game.pf.forbid_90_deg) {
02262 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02263 }
02264 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02265 }
02266 }
02267 }
02268 }
02269
02270 static bool CheckTrainStayInDepot(Train *v)
02271 {
02272
02273 for (const Train *u = v; u != NULL; u = u->Next()) {
02274 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02275 }
02276
02277
02278 if (v->tcache.cached_power == 0) {
02279 v->vehstatus |= VS_STOPPED;
02280 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02281 return true;
02282 }
02283
02284 SigSegState seg_state;
02285
02286 if (v->force_proceed == 0) {
02287
02288 if (++v->wait_counter < 37) {
02289 SetWindowClassesDirty(WC_TRAINS_LIST);
02290 return true;
02291 }
02292
02293 v->wait_counter = 0;
02294
02295 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02296 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02297
02298 SetWindowClassesDirty(WC_TRAINS_LIST);
02299 return true;
02300 }
02301 } else {
02302 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02303 }
02304
02305
02306 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02307
02308 if (HasDepotReservation(v->tile)) return true;
02309 SetDepotReservation(v->tile, true);
02310 VehicleEnterDepot(v);
02311 return true;
02312 }
02313
02314
02315 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == 0) {
02316
02317 SetWindowClassesDirty(WC_TRAINS_LIST);
02318 MarkTrainAsStuck(v);
02319 return true;
02320 }
02321
02322 SetDepotReservation(v->tile, true);
02323 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02324
02325 VehicleServiceInDepot(v);
02326 SetWindowClassesDirty(WC_TRAINS_LIST);
02327 v->PlayLeaveStationSound();
02328
02329 v->track = TRACK_BIT_X;
02330 if (v->direction & 2) v->track = TRACK_BIT_Y;
02331
02332 v->vehstatus &= ~VS_HIDDEN;
02333 v->cur_speed = 0;
02334
02335 v->UpdateDeltaXY(v->direction);
02336 v->cur_image = v->GetImage(v->direction);
02337 VehicleMove(v, false);
02338 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02339 v->UpdateAcceleration();
02340 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02341
02342 return false;
02343 }
02344
02346 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02347 {
02348 DiagDirection dir = TrackdirToExitdir(track_dir);
02349
02350 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02351
02352 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02353 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02354
02355 if (!HasVehicleOnTunnelBridge(tile, end, v)) {
02356
02357 SetTunnelBridgeReservation(tile, false);
02358 SetTunnelBridgeReservation(end, false);
02359
02360 if (_settings_client.gui.show_track_reservation) {
02361 MarkTileDirtyByTile(tile);
02362 MarkTileDirtyByTile(end);
02363 }
02364 }
02365 }
02366 } else if (IsRailStationTile(tile)) {
02367 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02368
02369
02370 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02371 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02372 }
02373 } else {
02374
02375 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02376 }
02377 }
02378
02380 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02381 {
02382 assert(v->IsFrontEngine());
02383
02384 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02385 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02386 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02387 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02388
02389
02390 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02391
02392 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02393 while (ft.Follow(tile, td)) {
02394 tile = ft.m_new_tile;
02395 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02396 td = RemoveFirstTrackdir(&bits);
02397 assert(bits == TRACKDIR_BIT_NONE);
02398
02399 if (!IsValidTrackdir(td)) break;
02400
02401 if (IsTileType(tile, MP_RAILWAY)) {
02402 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02403
02404 UnreserveRailTrack(tile, TrackdirToTrack(td));
02405 break;
02406 }
02407 if (HasPbsSignalOnTrackdir(tile, td)) {
02408 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02409
02410 break;
02411 } else {
02412
02413 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02414 MarkTileDirtyByTile(tile);
02415 }
02416 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02417 break;
02418 }
02419 }
02420
02421
02422 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);
02423
02424 free_tile = true;
02425 }
02426 }
02427
02428 static const byte _initial_tile_subcoord[6][4][3] = {
02429 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02430 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02431 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02432 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02433 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02434 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02435 };
02436
02449 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool do_track_reservation, PBSTileInfo *dest)
02450 {
02451 switch (_settings_game.pf.pathfinder_for_trains) {
02452 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_not_found, do_track_reservation, dest);
02453 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_not_found, do_track_reservation, dest);
02454
02455 default: NOT_REACHED();
02456 }
02457 }
02458
02464 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02465 {
02466 PBSTileInfo origin = FollowTrainReservation(v);
02467
02468 CFollowTrackRail ft(v);
02469
02470 TileIndex tile = origin.tile;
02471 Trackdir cur_td = origin.trackdir;
02472 while (ft.Follow(tile, cur_td)) {
02473 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02474
02475 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02476 }
02477
02478 if (_settings_game.pf.forbid_90_deg) {
02479 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02480 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02481 }
02482
02483
02484 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02485 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02486
02487
02488
02489
02490
02491
02492 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02493
02494
02495
02496 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02497
02498
02499 if (new_tracks) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02500 if (enterdir) *enterdir = ft.m_exitdir;
02501 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02502 }
02503
02504 tile = ft.m_new_tile;
02505 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02506
02507 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02508 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02509 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02510
02511 return PBSTileInfo(tile, cur_td, true);
02512 }
02513
02514 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02515 }
02516
02517 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02518
02519 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02520 }
02521
02522
02523 tile = origin.tile;
02524 cur_td = origin.trackdir;
02525 TileIndex stopped = ft.m_old_tile;
02526 Trackdir stopped_td = ft.m_old_td;
02527 while (tile != stopped || cur_td != stopped_td) {
02528 if (!ft.Follow(tile, cur_td)) break;
02529
02530 if (_settings_game.pf.forbid_90_deg) {
02531 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02532 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02533 }
02534 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02535
02536 tile = ft.m_new_tile;
02537 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02538
02539 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02540 }
02541
02542
02543 return PBSTileInfo();
02544 }
02545
02556 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02557 {
02558 switch (_settings_game.pf.pathfinder_for_trains) {
02559 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02560 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02561
02562 default: NOT_REACHED();
02563 }
02564 }
02565
02567 class VehicleOrderSaver
02568 {
02569 private:
02570 Vehicle *v;
02571 Order old_order;
02572 TileIndex old_dest_tile;
02573 StationID old_last_station_visited;
02574 VehicleOrderID index;
02575
02576 public:
02577 VehicleOrderSaver(Vehicle *_v) :
02578 v(_v),
02579 old_order(_v->current_order),
02580 old_dest_tile(_v->dest_tile),
02581 old_last_station_visited(_v->last_station_visited),
02582 index(_v->cur_order_index)
02583 {
02584 }
02585
02586 ~VehicleOrderSaver()
02587 {
02588 this->v->current_order = this->old_order;
02589 this->v->dest_tile = this->old_dest_tile;
02590 this->v->last_station_visited = this->old_last_station_visited;
02591 }
02592
02598 bool SwitchToNextOrder(bool skip_first)
02599 {
02600 if (this->v->GetNumOrders() == 0) return false;
02601
02602 if (skip_first) ++this->index;
02603
02604 int conditional_depth = 0;
02605
02606 do {
02607
02608 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02609
02610 Order *order = this->v->GetOrder(this->index);
02611 assert(order != NULL);
02612
02613 switch (order->GetType()) {
02614 case OT_GOTO_DEPOT:
02615
02616 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02617 case OT_GOTO_STATION:
02618 case OT_GOTO_WAYPOINT:
02619 this->v->current_order = *order;
02620 UpdateOrderDest(this->v, order);
02621 return true;
02622 case OT_CONDITIONAL: {
02623 if (conditional_depth > this->v->GetNumOrders()) return false;
02624 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02625 if (next != INVALID_VEH_ORDER_ID) {
02626 conditional_depth++;
02627 this->index = next;
02628
02629 continue;
02630 }
02631 break;
02632 }
02633 default:
02634 break;
02635 }
02636
02637
02638 ++this->index;
02639 } while (this->index != this->v->cur_order_index);
02640
02641 return false;
02642 }
02643 };
02644
02645
02646 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02647 {
02648 Track best_track = INVALID_TRACK;
02649 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02650 bool changed_signal = false;
02651
02652 assert((tracks & ~TRACK_BIT_MASK) == 0);
02653
02654 if (got_reservation != NULL) *got_reservation = false;
02655
02656
02657 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02658
02659 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02660
02661
02662 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02663 Track track = FindFirstTrack(tracks);
02664
02665 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02666 do_track_reservation = true;
02667 changed_signal = true;
02668 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02669 } else if (!do_track_reservation) {
02670 return track;
02671 }
02672 best_track = track;
02673 }
02674
02675 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02676 DiagDirection dest_enterdir = enterdir;
02677 if (do_track_reservation) {
02678
02679
02680
02681 CheckIfTrainNeedsService(v);
02682 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02683
02684 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02685 if (res_dest.tile == INVALID_TILE) {
02686
02687 if (mark_stuck) MarkTrainAsStuck(v);
02688 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02689 return FindFirstTrack(tracks);
02690 }
02691 }
02692
02693
02694 VehicleOrderSaver orders(v);
02695
02696
02697
02698
02699
02700
02701
02702 if (v->current_order.IsType(OT_LEAVESTATION)) {
02703 orders.SwitchToNextOrder(false);
02704 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02705 v->current_order.IsType(OT_GOTO_STATION) ?
02706 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02707 v->tile == v->dest_tile))) {
02708 orders.SwitchToNextOrder(true);
02709 }
02710
02711 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02712
02713 bool path_not_found = false;
02714 TileIndex new_tile = res_dest.tile;
02715
02716 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, &path_not_found, do_track_reservation, &res_dest);
02717 if (new_tile == tile) best_track = next_track;
02718
02719
02720 if (path_not_found) {
02721
02722 if (!HasBit(v->flags, VRF_NO_PATH_TO_DESTINATION)) {
02723
02724 SetBit(v->flags, VRF_NO_PATH_TO_DESTINATION);
02725
02726 AI::NewEvent(v->owner, new AIEventVehicleLost(v->index));
02727 if (_settings_client.gui.lost_train_warn && v->owner == _local_company) {
02728 SetDParam(0, v->index);
02729 AddVehicleNewsItem(
02730 STR_NEWS_TRAIN_IS_LOST,
02731 NS_ADVICE,
02732 v->index
02733 );
02734 }
02735 }
02736 } else {
02737
02738 if (HasBit(v->flags, VRF_NO_PATH_TO_DESTINATION)) {
02739
02740 ClrBit(v->flags, VRF_NO_PATH_TO_DESTINATION);
02741
02742 }
02743 }
02744 }
02745
02746
02747 if (!do_track_reservation) return best_track;
02748
02749
02750 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02751 if (mark_stuck) MarkTrainAsStuck(v);
02752 FreeTrainTrackReservation(v);
02753 return best_track;
02754 }
02755
02756
02757 if (res_dest.tile == INVALID_TILE) {
02758
02759 PBSTileInfo origin = FollowTrainReservation(v);
02760 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02761 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02762 best_track = FindFirstTrack(res);
02763 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02764 if (got_reservation != NULL) *got_reservation = true;
02765 if (changed_signal) MarkTileDirtyByTile(tile);
02766 } else {
02767 FreeTrainTrackReservation(v);
02768 if (mark_stuck) MarkTrainAsStuck(v);
02769 }
02770 return best_track;
02771 }
02772
02773 if (got_reservation != NULL) *got_reservation = true;
02774
02775
02776 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02777
02778 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02779 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02780 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02781 if (_settings_game.pf.forbid_90_deg) {
02782 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02783 }
02784
02785
02786 if (orders.SwitchToNextOrder(true)) {
02787 PBSTileInfo cur_dest;
02788 DoTrainPathfind(v, next_tile, exitdir, reachable, NULL, true, &cur_dest);
02789 if (cur_dest.tile != INVALID_TILE) {
02790 res_dest = cur_dest;
02791 if (res_dest.okay) continue;
02792
02793 FreeTrainTrackReservation(v);
02794 if (mark_stuck) MarkTrainAsStuck(v);
02795 if (got_reservation != NULL) *got_reservation = false;
02796 changed_signal = false;
02797 break;
02798 }
02799 }
02800
02801 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02802 FreeTrainTrackReservation(v);
02803 if (mark_stuck) MarkTrainAsStuck(v);
02804 if (got_reservation != NULL) *got_reservation = false;
02805 changed_signal = false;
02806 }
02807 break;
02808 }
02809
02810 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02811
02812 if (changed_signal) MarkTileDirtyByTile(tile);
02813
02814 return best_track;
02815 }
02816
02825 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02826 {
02827 assert(v->IsFrontEngine());
02828
02829
02830
02831
02832 if (v->track == TRACK_BIT_DEPOT) {
02833 if (HasDepotReservation(v->tile)) {
02834 if (mark_as_stuck) MarkTrainAsStuck(v);
02835 return false;
02836 } else {
02837
02838 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02839 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02840 }
02841 }
02842
02843 Vehicle *other_train = NULL;
02844 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02845
02846
02847
02848
02849
02850 if (other_train != NULL && other_train->index != v->index) {
02851 if (mark_as_stuck) MarkTrainAsStuck(v);
02852 return false;
02853 }
02854
02855 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02856
02857 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02858 ClrBit(v->flags, VRF_TRAIN_STUCK);
02859 return true;
02860 }
02861
02862
02863 if (v->track == TRACK_BIT_DEPOT) {
02864 SetDepotReservation(v->tile, true);
02865 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02866 }
02867
02868 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02869 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02870 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02871
02872 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02873
02874 bool res_made = false;
02875 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02876
02877 if (!res_made) {
02878
02879 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02880 return false;
02881 }
02882
02883 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02884 v->wait_counter = 0;
02885 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02886 }
02887 ClrBit(v->flags, VRF_TRAIN_STUCK);
02888 return true;
02889 }
02890
02891
02892 static bool CheckReverseTrain(const Train *v)
02893 {
02894 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02895 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02896 !(v->direction & 1)) {
02897 return false;
02898 }
02899
02900 assert(v->track != TRACK_BIT_NONE);
02901
02902 switch (_settings_game.pf.pathfinder_for_trains) {
02903 case VPF_NPF: return NPFTrainCheckReverse(v);
02904 case VPF_YAPF: return YapfTrainCheckReverse(v);
02905
02906 default: NOT_REACHED();
02907 }
02908 }
02909
02910 TileIndex Train::GetOrderStationLocation(StationID station)
02911 {
02912 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02913
02914 const Station *st = Station::Get(station);
02915 if (!(st->facilities & FACIL_TRAIN)) {
02916
02917 this->IncrementOrderIndex();
02918 return 0;
02919 }
02920
02921 return st->xy;
02922 }
02923
02924 void Train::MarkDirty()
02925 {
02926 Vehicle *v = this;
02927 do {
02928 v->UpdateViewport(false, false);
02929 } while ((v = v->Next()) != NULL);
02930
02931
02932 this->CargoChanged();
02933 this->UpdateAcceleration();
02934 }
02935
02945 int Train::UpdateSpeed()
02946 {
02947 uint accel;
02948
02949 switch (_settings_game.vehicle.train_acceleration_model) {
02950 default: NOT_REACHED();
02951 case AM_ORIGINAL:
02952 accel = this->acceleration * (this->GetAccelerationStatus() == AS_BRAKE ? -4 : 2);
02953 break;
02954 case AM_REALISTIC:
02955 this->max_speed = this->GetCurrentMaxSpeed();
02956 accel = this->GetAcceleration();
02957 break;
02958 }
02959
02960 uint spd = this->subspeed + accel;
02961 this->subspeed = (byte)spd;
02962 {
02963 int tempmax = this->max_speed;
02964 if (this->cur_speed > this->max_speed)
02965 tempmax = this->cur_speed - (this->cur_speed / 10) - 1;
02966 this->cur_speed = spd = Clamp(this->cur_speed + ((int)spd >> 8), 0, tempmax);
02967 }
02968
02969
02970
02971
02972
02973
02974
02975
02976
02977
02978
02979
02980 int scaled_spd = spd * 3 >> 2;
02981
02982 scaled_spd += this->progress;
02983 this->progress = 0;
02984 return scaled_spd;
02985 }
02986
02987 static void TrainEnterStation(Train *v, StationID station)
02988 {
02989 v->last_station_visited = station;
02990
02991
02992 Station *st = Station::Get(station);
02993 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
02994 st->had_vehicle_of_type |= HVOT_TRAIN;
02995 SetDParam(0, st->index);
02996 AddVehicleNewsItem(
02997 STR_NEWS_FIRST_TRAIN_ARRIVAL,
02998 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
02999 v->index,
03000 st->index
03001 );
03002 AI::NewEvent(v->owner, new AIEventStationFirstVehicle(st->index, v->index));
03003 }
03004
03005 v->BeginLoading();
03006
03007 StationAnimationTrigger(st, v->tile, STAT_ANIM_TRAIN_ARRIVES);
03008 }
03009
03010 static byte AfterSetTrainPos(Train *v, bool new_tile)
03011 {
03012 byte old_z = v->z_pos;
03013 v->z_pos = GetSlopeZ(v->x_pos, v->y_pos);
03014
03015 if (new_tile) {
03016 ClrBit(v->flags, VRF_GOINGUP);
03017 ClrBit(v->flags, VRF_GOINGDOWN);
03018
03019 if (v->track == TRACK_BIT_X || v->track == TRACK_BIT_Y) {
03020
03021
03022
03023
03024
03025 static const int HALF_TILE_SIZE = TILE_SIZE / 2;
03026 static const int INV_TILE_SIZE_MASK = ~(TILE_SIZE - 1);
03027
03028 byte middle_z = GetSlopeZ((v->x_pos & INV_TILE_SIZE_MASK) | HALF_TILE_SIZE, (v->y_pos & INV_TILE_SIZE_MASK) | HALF_TILE_SIZE);
03029
03030 if (middle_z != v->z_pos) {
03031 SetBit(v->flags, (middle_z > old_z) ? VRF_GOINGUP : VRF_GOINGDOWN);
03032 }
03033 }
03034 }
03035
03036 VehicleMove(v, true);
03037 return old_z;
03038 }
03039
03040
03041 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
03042 {
03043 return
03044 IsTileOwner(tile, v->owner) && (
03045 !v->IsFrontEngine() ||
03046 HasBit(v->compatible_railtypes, GetRailType(tile))
03047 );
03048 }
03049
03050 struct RailtypeSlowdownParams {
03051 byte small_turn, large_turn;
03052 byte z_up;
03053 byte z_down;
03054 };
03055
03056 static const RailtypeSlowdownParams _railtype_slowdown[] = {
03057
03058 {256 / 4, 256 / 2, 256 / 4, 2},
03059 {256 / 4, 256 / 2, 256 / 4, 2},
03060 {256 / 4, 256 / 2, 256 / 4, 2},
03061 {0, 256 / 2, 256 / 4, 2},
03062 };
03063
03065 static inline void AffectSpeedByZChange(Train *v, byte old_z)
03066 {
03067 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) return;
03068
03069 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03070
03071 if (old_z < v->z_pos) {
03072 v->cur_speed -= (v->cur_speed * rsp->z_up >> 8);
03073 } else {
03074 uint16 spd = v->cur_speed + rsp->z_down;
03075 if (spd <= v->max_speed) v->cur_speed = spd;
03076 }
03077 }
03078
03079 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
03080 {
03081 if (IsTileType(tile, MP_RAILWAY) &&
03082 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
03083 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
03084 Trackdir trackdir = FindFirstTrackdir(tracks);
03085 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
03086
03087 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
03088 }
03089 }
03090 return false;
03091 }
03092
03096 void Train::ReserveTrackUnderConsist() const
03097 {
03098 for (const Train *u = this; u != NULL; u = u->Next()) {
03099 switch (u->track) {
03100 case TRACK_BIT_WORMHOLE:
03101 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
03102 break;
03103 case TRACK_BIT_DEPOT:
03104 break;
03105 default:
03106 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
03107 break;
03108 }
03109 }
03110 }
03111
03112 uint Train::Crash(bool flooded)
03113 {
03114 uint pass = 0;
03115 if (this->IsFrontEngine()) {
03116 pass += 4;
03117
03118
03119
03120 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
03121 for (const Train *v = this; v != NULL; v = v->Next()) {
03122 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03123 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
03124
03125
03126 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
03127 }
03128 }
03129
03130
03131
03132 TileIndex crossing = TrainApproachingCrossingTile(this);
03133 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
03134
03135
03136 HideFillingPercent(&this->fill_percent_te_id);
03137 }
03138
03139 pass += Vehicle::Crash(flooded);
03140
03141 this->crash_anim_pos = flooded ? 4000 : 1;
03142 return pass;
03143 }
03144
03151 static uint TrainCrashed(Train *v)
03152 {
03153 uint num = 0;
03154
03155
03156 if (!(v->vehstatus & VS_CRASHED)) {
03157 num = v->Crash();
03158 AI::NewEvent(v->owner, new AIEventVehicleCrashed(v->index, v->tile, AIEventVehicleCrashed::CRASH_TRAIN));
03159 }
03160
03161
03162
03163 v->ReserveTrackUnderConsist();
03164
03165 return num;
03166 }
03167
03168 struct TrainCollideChecker {
03169 Train *v;
03170 uint num;
03171 };
03172
03173 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
03174 {
03175 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
03176
03177
03178 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
03179
03180
03181 Train *coll = Train::From(v)->First();
03182
03183
03184 if (coll == tcc->v) return NULL;
03185
03186 int x_diff = v->x_pos - tcc->v->x_pos;
03187 int y_diff = v->y_pos - tcc->v->y_pos;
03188
03189
03190
03191
03192
03193 uint hash = (y_diff + 7) | (x_diff + 7);
03194 if (hash & ~15) return NULL;
03195
03196
03197 if (x_diff * x_diff + y_diff * y_diff > 25) return NULL;
03198
03199
03200 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03201
03202
03203 tcc->num += TrainCrashed(tcc->v);
03204 tcc->num += TrainCrashed(coll);
03205
03206 return NULL;
03207 }
03208
03215 static bool CheckTrainCollision(Train *v)
03216 {
03217
03218 if (v->track == TRACK_BIT_DEPOT) return false;
03219
03220 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03221
03222 TrainCollideChecker tcc;
03223 tcc.v = v;
03224 tcc.num = 0;
03225
03226
03227 if (v->track == TRACK_BIT_WORMHOLE) {
03228 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03229 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03230 } else {
03231 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03232 }
03233
03234
03235 if (tcc.num == 0) return false;
03236
03237 SetDParam(0, tcc.num);
03238 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
03239 NS_ACCIDENT,
03240 v->index
03241 );
03242
03243 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03244 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03245 return true;
03246 }
03247
03248 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03249 {
03250 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03251
03252 Train *t = Train::From(v);
03253 DiagDirection exitdir = *(DiagDirection *)data;
03254
03255
03256 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03257
03258 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03259
03260 return t;
03261 }
03262
03263 static void TrainController(Train *v, Vehicle *nomove)
03264 {
03265 Train *first = v->First();
03266 Train *prev;
03267 bool direction_changed = false;
03268
03269
03270 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03271 DiagDirection enterdir = DIAGDIR_BEGIN;
03272 bool update_signals_crossing = false;
03273
03274 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03275 if (v->track != TRACK_BIT_WORMHOLE) {
03276
03277 if (gp.old_tile == gp.new_tile) {
03278
03279 if (v->track == TRACK_BIT_DEPOT) {
03280
03281 gp.x = v->x_pos;
03282 gp.y = v->y_pos;
03283 } else {
03284
03285
03286
03287 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v)) return;
03288
03289 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03290 if (HasBit(r, VETS_CANNOT_ENTER)) {
03291 goto invalid_rail;
03292 }
03293 if (HasBit(r, VETS_ENTERED_STATION)) {
03294
03295 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03296 }
03297 }
03298 } else {
03299
03300
03301
03302 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03303 assert(IsValidDiagDirection(enterdir));
03304
03305
03306
03307 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03308 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03309
03310 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03311 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03312
03313 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03314 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03315
03316
03317 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03318 }
03319
03320 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03321
03322
03323
03324 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03325
03326 TrackBits chosen_track;
03327 if (prev == NULL) {
03328
03329
03330 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03331 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03332
03333 if (v->force_proceed != 0 && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03334
03335
03336
03337
03338 Trackdir dir = FindFirstTrackdir(trackdirbits);
03339 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03340 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03341
03342
03343 v->force_proceed--;
03344 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03345 }
03346 }
03347
03348
03349 if ((red_signals & chosen_track) && v->force_proceed == 0) {
03350
03351 Trackdir i = FindFirstTrackdir(trackdirbits);
03352
03353
03354 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return;
03355
03356 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03357 v->cur_speed = 0;
03358 v->subspeed = 0;
03359 v->progress = 255 - 100;
03360 if (_settings_game.pf.wait_oneway_signal == 255 || ++v->wait_counter < _settings_game.pf.wait_oneway_signal * 20) return;
03361 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03362 v->cur_speed = 0;
03363 v->subspeed = 0;
03364 v->progress = 255 - 10;
03365 if (_settings_game.pf.wait_twoway_signal == 255 || ++v->wait_counter < _settings_game.pf.wait_twoway_signal * 73) {
03366 DiagDirection exitdir = TrackdirToExitdir(i);
03367 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03368
03369 exitdir = ReverseDiagDir(exitdir);
03370
03371
03372 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return;
03373 }
03374 }
03375
03376
03377
03378 if (_settings_game.pf.wait_for_pbs_path == 255 && UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03379 v->wait_counter = 0;
03380 return;
03381 }
03382 goto reverse_train_direction;
03383 } else {
03384 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03385 }
03386 } else {
03387
03388 if (prev->tile == gp.new_tile) {
03389
03390 if (prev->track == TRACK_BIT_WORMHOLE) {
03391
03392
03393 assert(IsTunnel(prev->tile));
03394 chosen_track = bits;
03395 } else {
03396 chosen_track = prev->track;
03397 }
03398 } else {
03399
03400
03401
03402
03403
03404
03405
03406 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03407 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03408 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03409 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03410 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03411 };
03412 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03413 assert(IsValidDiagDirection(exitdir));
03414 chosen_track = _connecting_track[enterdir][exitdir];
03415 }
03416 chosen_track &= bits;
03417 }
03418
03419
03420 assert(
03421 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03422 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03423 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03424
03425
03426 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03427 gp.x = (gp.x & ~0xF) | b[0];
03428 gp.y = (gp.y & ~0xF) | b[1];
03429 Direction chosen_dir = (Direction)b[2];
03430
03431
03432 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03433 if (HasBit(r, VETS_CANNOT_ENTER)) {
03434 goto invalid_rail;
03435 }
03436
03437 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03438 Track track = FindFirstTrack(chosen_track);
03439 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03440 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03441 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03442 MarkTileDirtyByTile(gp.new_tile);
03443 }
03444
03445
03446 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03447
03448 v->tile = gp.new_tile;
03449
03450 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03451 v->First()->PowerChanged();
03452 v->First()->UpdateAcceleration();
03453 }
03454
03455 v->track = chosen_track;
03456 assert(v->track);
03457 }
03458
03459
03460
03461 update_signals_crossing = true;
03462
03463 if (chosen_dir != v->direction) {
03464 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == AM_ORIGINAL) {
03465 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03466 DirDiff diff = DirDifference(v->direction, chosen_dir);
03467 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? rsp->small_turn : rsp->large_turn) * v->cur_speed >> 8;
03468 }
03469 direction_changed = true;
03470 v->direction = chosen_dir;
03471 }
03472
03473 if (v->IsFrontEngine()) {
03474 v->wait_counter = 0;
03475
03476
03477 TileIndex crossing = TrainApproachingCrossingTile(v);
03478 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03479
03480
03481 CheckNextTrainTile(v);
03482 }
03483
03484 if (HasBit(r, VETS_ENTERED_STATION)) {
03485
03486 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03487 }
03488 }
03489 } else {
03490
03491
03492
03493 if (!(v->vehstatus & VS_HIDDEN)) {
03494 v->cur_speed =
03495 min(v->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03496 }
03497
03498 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03499
03500 if (v->IsFrontEngine()) {
03501 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03502 CheckNextTrainTile(v);
03503 }
03504 } else {
03505 v->x_pos = gp.x;
03506 v->y_pos = gp.y;
03507 VehicleMove(v, !(v->vehstatus & VS_HIDDEN));
03508 continue;
03509 }
03510 }
03511
03512
03513 v->UpdateDeltaXY(v->direction);
03514
03515 v->x_pos = gp.x;
03516 v->y_pos = gp.y;
03517
03518
03519 byte old_z = AfterSetTrainPos(v, (gp.new_tile != gp.old_tile));
03520
03521 if (prev == NULL) {
03522
03523 AffectSpeedByZChange(v, old_z);
03524 }
03525
03526 if (update_signals_crossing) {
03527 if (v->IsFrontEngine()) {
03528 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03529
03530
03531
03532
03533
03534
03535
03536
03537 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03538 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03539 !TryPathReserve(v)) {
03540 MarkTrainAsStuck(v);
03541 }
03542 }
03543 }
03544
03545
03546
03547 if (v->Next() == NULL) {
03548 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03549 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03550 }
03551 }
03552
03553
03554 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03555 }
03556
03557 if (direction_changed) first->tcache.cached_max_curve_speed = first->GetCurveSpeedLimit();
03558
03559 return;
03560
03561 invalid_rail:
03562
03563 if (prev != NULL) error("Disconnecting train");
03564
03565 reverse_train_direction:
03566 v->wait_counter = 0;
03567 v->cur_speed = 0;
03568 v->subspeed = 0;
03569 ReverseTrainDirection(v);
03570 }
03571
03577 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03578 {
03579 TrackBits *trackbits = (TrackBits *)data;
03580
03581 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03582 if (Train::From(v)->track == TRACK_BIT_WORMHOLE) {
03583
03584 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03585 } else {
03586 *trackbits |= Train::From(v)->track;
03587 }
03588 }
03589
03590 return NULL;
03591 }
03592
03600 static void DeleteLastWagon(Train *v)
03601 {
03602 Train *first = v->First();
03603
03604
03605
03606
03607 Train *u = v;
03608 for (; v->Next() != NULL; v = v->Next()) u = v;
03609 u->SetNext(NULL);
03610
03611 if (first != v) {
03612
03613 first->ConsistChanged(false);
03614
03615
03616 if (first->track == TRACK_BIT_DEPOT) {
03617 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03618 }
03619 }
03620
03621
03622 TrackBits trackbits = v->track;
03623 TileIndex tile = v->tile;
03624 Owner owner = v->owner;
03625
03626 delete v;
03627 v = NULL;
03628
03629 if (trackbits == TRACK_BIT_WORMHOLE) {
03630
03631 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03632 }
03633
03634 Track track = TrackBitsToTrack(trackbits);
03635 if (HasReservedTracks(tile, trackbits)) {
03636 UnreserveRailTrack(tile, track);
03637
03638
03639 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03640 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03641
03642
03643 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03644 for (Track t = TRACK_BEGIN; t < TRACK_END; t++) {
03645 if (HasBit(remaining_trackbits, t)) {
03646 TryReserveRailTrack(tile, t);
03647 }
03648 }
03649 }
03650
03651
03652 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03653
03654
03655 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03656 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03657 } else {
03658 SetSignalsOnBothDir(tile, track, owner);
03659 }
03660 }
03661
03662 static void ChangeTrainDirRandomly(Train *v)
03663 {
03664 static const DirDiff delta[] = {
03665 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03666 };
03667
03668 do {
03669
03670 if (!(v->vehstatus & VS_HIDDEN)) {
03671 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03672 v->UpdateDeltaXY(v->direction);
03673 v->cur_image = v->GetImage(v->direction);
03674
03675
03676
03677 if (v->track != TRACK_BIT_WORMHOLE) AfterSetTrainPos(v, false);
03678 }
03679 } while ((v = v->Next()) != NULL);
03680 }
03681
03682 static bool HandleCrashedTrain(Train *v)
03683 {
03684 int state = ++v->crash_anim_pos;
03685
03686 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03687 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03688 }
03689
03690 uint32 r;
03691 if (state <= 200 && Chance16R(1, 7, r)) {
03692 int index = (r * 10 >> 16);
03693
03694 Vehicle *u = v;
03695 do {
03696 if (--index < 0) {
03697 r = Random();
03698
03699 CreateEffectVehicleRel(u,
03700 GB(r, 8, 3) + 2,
03701 GB(r, 16, 3) + 2,
03702 GB(r, 0, 3) + 5,
03703 EV_EXPLOSION_SMALL);
03704 break;
03705 }
03706 } while ((u = u->Next()) != NULL);
03707 }
03708
03709 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03710
03711 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03712 bool ret = v->Next() != NULL;
03713 DeleteLastWagon(v);
03714 return ret;
03715 }
03716
03717 return true;
03718 }
03719
03720 static void HandleBrokenTrain(Train *v)
03721 {
03722 if (v->breakdown_ctr != 1) {
03723 v->breakdown_ctr = 1;
03724 v->cur_speed = 0;
03725
03726 if (v->breakdowns_since_last_service != 255)
03727 v->breakdowns_since_last_service++;
03728
03729 v->MarkDirty();
03730 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03731 SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
03732
03733 if (!PlayVehicleSound(v, VSE_BREAKDOWN)) {
03734 SndPlayVehicleFx((_settings_game.game_creation.landscape != LT_TOYLAND) ?
03735 SND_10_TRAIN_BREAKDOWN : SND_3A_COMEDY_BREAKDOWN_2, v);
03736 }
03737
03738 if (!(v->vehstatus & VS_HIDDEN)) {
03739 EffectVehicle *u = CreateEffectVehicleRel(v, 4, 4, 5, EV_BREAKDOWN_SMOKE);
03740 if (u != NULL) u->animation_state = v->breakdown_delay * 2;
03741 }
03742 }
03743
03744 if (!(v->tick_counter & 3)) {
03745 if (!--v->breakdown_delay) {
03746 v->breakdown_ctr = 0;
03747 v->MarkDirty();
03748 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03749 }
03750 }
03751 }
03752
03754 static const uint16 _breakdown_speeds[16] = {
03755 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03756 };
03757
03758
03766 static bool TrainApproachingLineEnd(Train *v, bool signal)
03767 {
03768
03769 uint x = v->x_pos & 0xF;
03770 uint y = v->y_pos & 0xF;
03771
03772
03773
03774 switch (v->direction) {
03775 case DIR_N : x = ~x + ~y + 25; break;
03776 case DIR_NW: x = y;
03777 case DIR_NE: x = ~x + 16; break;
03778 case DIR_E : x = ~x + y + 9; break;
03779 case DIR_SE: x = y; break;
03780 case DIR_S : x = x + y - 7; break;
03781 case DIR_W : x = ~y + x + 9; break;
03782 default: break;
03783 }
03784
03785
03786 if (!signal && x + (v->tcache.cached_veh_length + 1) / 2 >= TILE_SIZE) {
03787
03788 v->cur_speed = 0;
03789 ReverseTrainDirection(v);
03790 return false;
03791 }
03792
03793
03794 v->vehstatus |= VS_TRAIN_SLOWING;
03795 uint16 break_speed = _breakdown_speeds[x & 0xF];
03796 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03797
03798 return true;
03799 }
03800
03801
03807 static bool TrainCanLeaveTile(const Train *v)
03808 {
03809
03810 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03811
03812 TileIndex tile = v->tile;
03813
03814
03815 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03816 DiagDirection dir = GetTunnelBridgeDirection(tile);
03817 if (DiagDirToDir(dir) == v->direction) return false;
03818 }
03819
03820
03821 if (IsRailDepotTile(tile)) {
03822 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03823 if (DiagDirToDir(dir) == v->direction) return false;
03824 }
03825
03826 return true;
03827 }
03828
03829
03837 static TileIndex TrainApproachingCrossingTile(const Train *v)
03838 {
03839 assert(v->IsFrontEngine());
03840 assert(!(v->vehstatus & VS_CRASHED));
03841
03842 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03843
03844 DiagDirection dir = TrainExitDir(v->direction, v->track);
03845 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03846
03847
03848 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03849 !CheckCompatibleRail(v, tile)) {
03850 return INVALID_TILE;
03851 }
03852
03853 return tile;
03854 }
03855
03856
03863 static bool TrainCheckIfLineEnds(Train *v)
03864 {
03865
03866
03867 int t = v->breakdown_ctr;
03868 if (t > 1) {
03869 v->vehstatus |= VS_TRAIN_SLOWING;
03870
03871 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03872 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03873 } else {
03874 v->vehstatus &= ~VS_TRAIN_SLOWING;
03875 }
03876
03877 if (!TrainCanLeaveTile(v)) return true;
03878
03879
03880 DiagDirection dir = TrainExitDir(v->direction, v->track);
03881
03882 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03883
03884
03885 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03886 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03887
03888 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03889 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03890
03891
03892
03893
03894 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03895 if (_settings_game.pf.forbid_90_deg) {
03896 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03897 }
03898
03899
03900 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03901 return TrainApproachingLineEnd(v, false);
03902 }
03903
03904
03905 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true);
03906
03907
03908 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03909
03910 return true;
03911 }
03912
03913
03914 static bool TrainLocoHandler(Train *v, bool mode)
03915 {
03916
03917 if (v->vehstatus & VS_CRASHED) {
03918 return mode ? true : HandleCrashedTrain(v);
03919 }
03920
03921 if (v->force_proceed != 0) {
03922 ClrBit(v->flags, VRF_TRAIN_STUCK);
03923 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03924 }
03925
03926
03927 if (v->breakdown_ctr != 0) {
03928 if (v->breakdown_ctr <= 2) {
03929 HandleBrokenTrain(v);
03930 return true;
03931 }
03932 if (!v->current_order.IsType(OT_LOADING)) v->breakdown_ctr--;
03933 }
03934
03935 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03936 ReverseTrainDirection(v);
03937 }
03938
03939
03940 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03941
03942 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03943 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03944 v->wait_counter = 0;
03945 v->cur_speed = 0;
03946 v->subspeed = 0;
03947 ReverseTrainDirection(v);
03948 return true;
03949 }
03950
03951 v->HandleLoading(mode);
03952
03953 if (v->current_order.IsType(OT_LOADING)) return true;
03954
03955 if (CheckTrainStayInDepot(v)) return true;
03956
03957 if (!mode) HandleLocomotiveSmokeCloud(v);
03958
03959
03960 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03961 CheckNextTrainTile(v);
03962 }
03963
03964
03965 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03966 ++v->wait_counter;
03967
03968
03969 bool turn_around = v->wait_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.wait_for_pbs_path < 255;
03970
03971 if (!turn_around && v->wait_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == 0) return true;
03972 if (!TryPathReserve(v)) {
03973
03974 if (turn_around) ReverseTrainDirection(v);
03975
03976 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->wait_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
03977
03978 if (_settings_client.gui.lost_train_warn && v->owner == _local_company) {
03979 SetDParam(0, v->index);
03980 AddVehicleNewsItem(
03981 STR_NEWS_TRAIN_IS_STUCK,
03982 NS_ADVICE,
03983 v->index
03984 );
03985 }
03986 v->wait_counter = 0;
03987 }
03988
03989 if (v->force_proceed == 0) return true;
03990 ClrBit(v->flags, VRF_TRAIN_STUCK);
03991 v->wait_counter = 0;
03992 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03993 }
03994 }
03995
03996 if (v->current_order.IsType(OT_LEAVESTATION)) {
03997 v->current_order.Free();
03998 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03999 return true;
04000 }
04001
04002 int j = v->UpdateSpeed();
04003
04004
04005 if (v->cur_speed == 0 && v->tcache.last_speed == 0 && (v->vehstatus & VS_STOPPED)) {
04006
04007 v->force_proceed = 0;
04008 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04009 }
04010
04011 int adv_spd = (v->direction & 1) ? 192 : 256;
04012 if (j < adv_spd) {
04013
04014 if (v->cur_speed == 0) SetLastSpeed(v, v->cur_speed);
04015 } else {
04016 TrainCheckIfLineEnds(v);
04017
04018 for (;;) {
04019 j -= adv_spd;
04020 TrainController(v, NULL);
04021
04022 if (CheckTrainCollision(v)) break;
04023
04024 adv_spd = (v->direction & 1) ? 192 : 256;
04025
04026
04027 if (j < adv_spd || v->cur_speed == 0) break;
04028
04029 OrderType order_type = v->current_order.GetType();
04030
04031 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
04032 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
04033 IsTileType(v->tile, MP_STATION) &&
04034 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
04035 ProcessOrders(v);
04036 }
04037 }
04038 SetLastSpeed(v, v->cur_speed);
04039 }
04040
04041 for (Train *u = v; u != NULL; u = u->Next()) {
04042 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
04043
04044 u->UpdateViewport(false, false);
04045 }
04046
04047 if (v->progress == 0) v->progress = j;
04048
04049 return true;
04050 }
04051
04052
04053
04054 Money Train::GetRunningCost() const
04055 {
04056 Money cost = 0;
04057 const Train *v = this;
04058
04059 do {
04060 const Engine *e = Engine::Get(v->engine_type);
04061 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
04062
04063 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
04064 if (cost_factor == 0) continue;
04065
04066
04067 if (v->IsMultiheaded()) cost_factor /= 2;
04068
04069 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->grffile);
04070 } while ((v = v->GetNextVehicle()) != NULL);
04071
04072 return cost;
04073 }
04074
04075
04076 bool Train::Tick()
04077 {
04078 this->tick_counter++;
04079
04080 if (this->IsFrontEngine()) {
04081 if (!(this->vehstatus & VS_STOPPED)) this->running_ticks++;
04082
04083 this->current_order_time++;
04084
04085 if (!TrainLocoHandler(this, false)) return false;
04086
04087 return TrainLocoHandler(this, true);
04088 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
04089
04090 if (++this->crash_anim_pos >= 4400) {
04091 delete this;
04092 return false;
04093 }
04094 }
04095
04096 return true;
04097 }
04098
04099 static void CheckIfTrainNeedsService(Train *v)
04100 {
04101 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
04102 if (v->IsInDepot()) {
04103 VehicleServiceInDepot(v);
04104 return;
04105 }
04106
04107 uint max_penalty;
04108 switch (_settings_game.pf.pathfinder_for_trains) {
04109 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
04110 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
04111 default: NOT_REACHED();
04112 }
04113
04114 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
04115
04116 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
04117 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
04118
04119
04120
04121 v->current_order.MakeDummy();
04122 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04123 }
04124 return;
04125 }
04126
04127 DepotID depot = GetDepotIndex(tfdd.tile);
04128
04129 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
04130 v->current_order.GetDestination() != depot &&
04131 !Chance16(3, 16)) {
04132 return;
04133 }
04134
04135 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
04136 v->dest_tile = tfdd.tile;
04137 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04138 }
04139
04140 void Train::OnNewDay()
04141 {
04142 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
04143
04144 if (this->IsFrontEngine()) {
04145 CheckVehicleBreakdown(this);
04146 AgeVehicle(this);
04147
04148 CheckIfTrainNeedsService(this);
04149
04150 CheckOrders(this);
04151
04152
04153 if (this->current_order.IsType(OT_GOTO_STATION)) {
04154 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
04155 if (tile != INVALID_TILE) this->dest_tile = tile;
04156 }
04157
04158 if (this->running_ticks != 0) {
04159
04160 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
04161
04162 this->profit_this_year -= cost.GetCost();
04163 this->running_ticks = 0;
04164
04165 SubtractMoneyFromCompanyFract(this->owner, cost);
04166
04167 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
04168 SetWindowClassesDirty(WC_TRAINS_LIST);
04169 }
04170 } else if (this->IsEngine()) {
04171
04172 AgeVehicle(this);
04173 }
04174 }
04175
04176 Trackdir Train::GetVehicleTrackdir() const
04177 {
04178 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
04179
04180 if (this->track == TRACK_BIT_DEPOT) {
04181
04182 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
04183 }
04184
04185 if (this->track == TRACK_BIT_WORMHOLE) {
04186
04187 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
04188 }
04189
04190 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04191 }