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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 "pathfinder/follow_track.hpp"
00019 #include "openttd.h"
00020 #include "news_func.h"
00021 #include "company_func.h"
00022 #include "vehicle_gui.h"
00023 #include "newgrf_engine.h"
00024 #include "newgrf_sound.h"
00025 #include "newgrf_text.h"
00026 #include "group.h"
00027 #include "table/sprites.h"
00028 #include "strings_func.h"
00029 #include "functions.h"
00030 #include "window_func.h"
00031 #include "vehicle_func.h"
00032 #include "sound_func.h"
00033 #include "autoreplace_gui.h"
00034 #include "gfx_func.h"
00035 #include "ai/ai.hpp"
00036 #include "newgrf_station.h"
00037 #include "effectvehicle_func.h"
00038 #include "gamelog.h"
00039 #include "network/network.h"
00040 #include "spritecache.h"
00041
00042 #include "table/strings.h"
00043 #include "table/train_cmd.h"
00044
00045 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck);
00046 static bool TrainCheckIfLineEnds(Train *v);
00047 static void TrainController(Train *v, Vehicle *nomove);
00048 static TileIndex TrainApproachingCrossingTile(const Train *v);
00049 static void CheckIfTrainNeedsService(Train *v);
00050 static void CheckNextTrainTile(Train *v);
00051
00052 static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
00053 static const byte _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
00054
00055
00063 static inline DiagDirection TrainExitDir(Direction direction, TrackBits track)
00064 {
00065 static const TrackBits state_dir_table[DIAGDIR_END] = { TRACK_BIT_RIGHT, TRACK_BIT_LOWER, TRACK_BIT_LEFT, TRACK_BIT_UPPER };
00066
00067 DiagDirection diagdir = DirToDiagDir(direction);
00068
00069
00070 if (!HasBit(direction, 0) && track != state_dir_table[diagdir]) {
00071 diagdir = ChangeDiagDir(diagdir, DIAGDIRDIFF_90LEFT);
00072 }
00073
00074 return diagdir;
00075 }
00076
00077
00082 byte FreightWagonMult(CargoID cargo)
00083 {
00084 if (!CargoSpec::Get(cargo)->is_freight) return 1;
00085 return _settings_game.vehicle.freight_trains;
00086 }
00087
00088
00093 void TrainPowerChanged(Train *v)
00094 {
00095 uint32 total_power = 0;
00096 uint32 max_te = 0;
00097
00098 for (const Train *u = v; u != NULL; u = u->Next()) {
00099 RailType railtype = GetRailType(u->tile);
00100
00101
00102 if (!u->IsArticulatedPart()) {
00103 bool engine_has_power = HasPowerOnRail(u->railtype, railtype);
00104
00105 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00106
00107 if (engine_has_power) {
00108 uint16 power = GetVehicleProperty(u, PROP_TRAIN_POWER, rvi_u->power);
00109 if (power != 0) {
00110
00111 if (u->IsMultiheaded()) power /= 2;
00112
00113 total_power += power;
00114
00115 max_te += (u->tcache.cached_veh_weight * 10000 * GetVehicleProperty(u, PROP_TRAIN_TRACTIVE_EFFORT, rvi_u->tractive_effort)) / 256;
00116 }
00117 }
00118 }
00119
00120 if (HasBit(u->flags, VRF_POWEREDWAGON) && HasPowerOnRail(v->railtype, railtype)) {
00121 total_power += RailVehInfo(u->tcache.first_engine)->pow_wag_power;
00122 }
00123 }
00124
00125 if (v->tcache.cached_power != total_power || v->tcache.cached_max_te != max_te) {
00126
00127 if (total_power == 0) v->vehstatus |= VS_STOPPED;
00128
00129 v->tcache.cached_power = total_power;
00130 v->tcache.cached_max_te = max_te;
00131 SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
00132 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
00133 }
00134 }
00135
00136
00142 static void TrainCargoChanged(Train *v)
00143 {
00144 uint32 weight = 0;
00145
00146 for (Train *u = v; u != NULL; u = u->Next()) {
00147 uint32 vweight = CargoSpec::Get(u->cargo_type)->weight * u->cargo.Count() * FreightWagonMult(u->cargo_type) / 16;
00148
00149
00150 if (!u->IsArticulatedPart()) {
00151
00152 vweight += GetVehicleProperty(u, PROP_TRAIN_WEIGHT, RailVehInfo(u->engine_type)->weight);
00153 }
00154
00155
00156 if (HasBit(u->flags, VRF_POWEREDWAGON)) {
00157 vweight += RailVehInfo(u->tcache.first_engine)->pow_wag_weight;
00158 }
00159
00160
00161 weight += vweight;
00162
00163
00164 u->tcache.cached_veh_weight = vweight;
00165 }
00166
00167
00168 v->tcache.cached_weight = weight;
00169
00170
00171 TrainPowerChanged(v);
00172 }
00173
00174
00179 static void RailVehicleLengthChanged(const Train *u)
00180 {
00181
00182 const Engine *engine = Engine::Get(u->engine_type);
00183 uint32 grfid = engine->grffile->grfid;
00184 GRFConfig *grfconfig = GetGRFConfig(grfid);
00185 if (GamelogGRFBugReverse(grfid, engine->internal_id) || !HasBit(grfconfig->grf_bugs, GBUG_VEH_LENGTH)) {
00186 ShowNewGrfVehicleError(u->engine_type, STR_NEWGRF_BROKEN, STR_NEWGRF_BROKEN_VEHICLE_LENGTH, GBUG_VEH_LENGTH, true);
00187 }
00188 }
00189
00191 void CheckTrainsLengths()
00192 {
00193 const Train *v;
00194
00195 FOR_ALL_TRAINS(v) {
00196 if (v->First() == v && !(v->vehstatus & VS_CRASHED)) {
00197 for (const Train *u = v, *w = v->Next(); w != NULL; u = w, w = w->Next()) {
00198 if (u->track != TRACK_BIT_DEPOT) {
00199 if ((w->track != TRACK_BIT_DEPOT &&
00200 max(abs(u->x_pos - w->x_pos), abs(u->y_pos - w->y_pos)) != u->tcache.cached_veh_length) ||
00201 (w->track == TRACK_BIT_DEPOT && TicksToLeaveDepot(u) <= 0)) {
00202 SetDParam(0, v->index);
00203 SetDParam(1, v->owner);
00204 ShowErrorMessage(STR_BROKEN_VEHICLE_LENGTH, INVALID_STRING_ID, 0, 0, true);
00205
00206 if (!_networking) DoCommandP(0, PM_PAUSED_ERROR, 1, CMD_PAUSE);
00207 }
00208 }
00209 }
00210 }
00211 }
00212 }
00213
00221 void TrainConsistChanged(Train *v, bool same_length)
00222 {
00223 uint16 max_speed = UINT16_MAX;
00224
00225 assert(v->IsFrontEngine() || v->IsFreeWagon());
00226
00227 const RailVehicleInfo *rvi_v = RailVehInfo(v->engine_type);
00228 EngineID first_engine = v->IsFrontEngine() ? v->engine_type : INVALID_ENGINE;
00229 v->tcache.cached_total_length = 0;
00230 v->compatible_railtypes = RAILTYPES_NONE;
00231
00232 bool train_can_tilt = true;
00233
00234 for (Train *u = v; u != NULL; u = u->Next()) {
00235 const RailVehicleInfo *rvi_u = RailVehInfo(u->engine_type);
00236
00237
00238 assert(u->First() == v);
00239
00240
00241 u->tcache.first_engine = v == u ? INVALID_ENGINE : first_engine;
00242 u->railtype = rvi_u->railtype;
00243
00244 if (u->IsEngine()) first_engine = u->engine_type;
00245
00246
00247 u->tcache.user_def_data = rvi_u->user_def_data;
00248 v->InvalidateNewGRFCache();
00249 u->InvalidateNewGRFCache();
00250 }
00251
00252 for (Train *u = v; u != NULL; u = u->Next()) {
00253
00254 u->tcache.user_def_data = GetVehicleProperty(u, PROP_TRAIN_USER_DATA, u->tcache.user_def_data);
00255 v->InvalidateNewGRFCache();
00256 u->InvalidateNewGRFCache();
00257 }
00258
00259 for (Train *u = v; u != NULL; u = u->Next()) {
00260 const Engine *e_u = Engine::Get(u->engine_type);
00261 const RailVehicleInfo *rvi_u = &e_u->u.rail;
00262
00263 if (!HasBit(e_u->info.misc_flags, EF_RAIL_TILTS)) train_can_tilt = false;
00264
00265
00266 u->tcache.cached_override = GetWagonOverrideSpriteSet(u->engine_type, u->cargo_type, u->tcache.first_engine);
00267
00268
00269 u->colourmap = PAL_NONE;
00270
00271 if (rvi_u->visual_effect != 0) {
00272 u->tcache.cached_vis_effect = rvi_u->visual_effect;
00273 } else {
00274 if (u->IsWagon() || u->IsArticulatedPart()) {
00275
00276 u->tcache.cached_vis_effect = 0x40;
00277 } else if (rvi_u->engclass == 0) {
00278
00279 u->tcache.cached_vis_effect = 4;
00280 } else {
00281
00282 u->tcache.cached_vis_effect = 8;
00283 }
00284 }
00285
00286
00287 if (HasBit(e_u->info.callback_mask, CBM_TRAIN_WAGON_POWER)) {
00288 uint16 callback = GetVehicleCallback(CBID_TRAIN_WAGON_POWER, 0, 0, u->engine_type, u);
00289
00290 if (callback != CALLBACK_FAILED) u->tcache.cached_vis_effect = GB(callback, 0, 8);
00291 }
00292
00293 if (rvi_v->pow_wag_power != 0 && rvi_u->railveh_type == RAILVEH_WAGON &&
00294 UsesWagonOverride(u) && !HasBit(u->tcache.cached_vis_effect, 7)) {
00295
00296 SetBit(u->flags, VRF_POWEREDWAGON);
00297 } else {
00298 ClrBit(u->flags, VRF_POWEREDWAGON);
00299 }
00300
00301 if (!u->IsArticulatedPart()) {
00302
00303
00304 if (rvi_u->power > 0) {
00305 v->compatible_railtypes |= GetRailTypeInfo(u->railtype)->powered_railtypes;
00306 }
00307
00308
00309
00310 if (HasBit(u->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL)) {
00311 u->railtype = RAILTYPE_RAIL;
00312 u->compatible_railtypes |= RAILTYPES_RAIL;
00313 }
00314
00315
00316 if ((rvi_u->railveh_type != RAILVEH_WAGON || _settings_game.vehicle.wagon_speed_limits) && !UsesWagonOverride(u)) {
00317 uint16 speed = GetVehicleProperty(u, PROP_TRAIN_SPEED, rvi_u->max_speed);
00318 if (speed != 0) max_speed = min(speed, max_speed);
00319 }
00320 }
00321
00322 u->cargo_cap = GetVehicleCapacity(u);
00323
00324
00325 uint16 veh_len = CALLBACK_FAILED;
00326 if (HasBit(e_u->info.callback_mask, CBM_VEHICLE_LENGTH)) {
00327 veh_len = GetVehicleCallback(CBID_VEHICLE_LENGTH, 0, 0, u->engine_type, u);
00328 }
00329 if (veh_len == CALLBACK_FAILED) veh_len = rvi_u->shorten_factor;
00330 veh_len = 8 - Clamp(veh_len, 0, 7);
00331
00332
00333 if (same_length && veh_len != u->tcache.cached_veh_length) RailVehicleLengthChanged(u);
00334
00335
00336 if (!same_length) u->tcache.cached_veh_length = veh_len;
00337
00338 v->tcache.cached_total_length += u->tcache.cached_veh_length;
00339 v->InvalidateNewGRFCache();
00340 u->InvalidateNewGRFCache();
00341 }
00342
00343
00344 v->tcache.cached_max_speed = max_speed;
00345 v->tcache.cached_tilt = train_can_tilt;
00346 v->tcache.cached_max_curve_speed = GetTrainCurveSpeedLimit(v);
00347
00348
00349 TrainCargoChanged(v);
00350
00351 if (v->IsFrontEngine()) {
00352 UpdateTrainAcceleration(v);
00353 SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
00354 }
00355 }
00356
00357 enum AccelType {
00358 AM_ACCEL,
00359 AM_BRAKE
00360 };
00361
00372 int GetTrainStopLocation(StationID station_id, TileIndex tile, const Train *v, int *station_ahead, int *station_length)
00373 {
00374 const Station *st = Station::Get(station_id);
00375 *station_ahead = st->GetPlatformLength(tile, DirToDiagDir(v->direction)) * TILE_SIZE;
00376 *station_length = st->GetPlatformLength(tile) * TILE_SIZE;
00377
00378
00379
00380 OrderStopLocation osl = OSL_PLATFORM_MIDDLE;
00381 if (v->tcache.cached_total_length >= *station_length) {
00382
00383 osl = OSL_PLATFORM_FAR_END;
00384 } else if (v->current_order.IsType(OT_GOTO_STATION) && v->current_order.GetDestination() == station_id) {
00385 osl = v->current_order.GetStopLocation();
00386 }
00387
00388
00389 int stop;
00390 switch (osl) {
00391 default: NOT_REACHED();
00392
00393 case OSL_PLATFORM_NEAR_END:
00394 stop = v->tcache.cached_total_length;
00395 break;
00396
00397 case OSL_PLATFORM_MIDDLE:
00398 stop = *station_length - (*station_length - v->tcache.cached_total_length) / 2;
00399 break;
00400
00401 case OSL_PLATFORM_FAR_END:
00402 stop = *station_length;
00403 break;
00404 }
00405
00406
00407
00408 return stop - (v->tcache.cached_veh_length + 1) / 2;
00409 }
00410
00411
00417 int GetTrainCurveSpeedLimit(Train *v)
00418 {
00419 static const int absolute_max_speed = UINT16_MAX;
00420 int max_speed = absolute_max_speed;
00421
00422 if (_settings_game.vehicle.train_acceleration_model == TAM_ORIGINAL) return max_speed;
00423
00424 int curvecount[2] = {0, 0};
00425
00426
00427 int numcurve = 0;
00428 int sum = 0;
00429 int pos = 0;
00430 int lastpos = -1;
00431 for (const Vehicle *u = v; u->Next() != NULL; u = u->Next(), pos++) {
00432 Direction this_dir = u->direction;
00433 Direction next_dir = u->Next()->direction;
00434
00435 DirDiff dirdiff = DirDifference(this_dir, next_dir);
00436 if (dirdiff == DIRDIFF_SAME) continue;
00437
00438 if (dirdiff == DIRDIFF_45LEFT) curvecount[0]++;
00439 if (dirdiff == DIRDIFF_45RIGHT) curvecount[1]++;
00440 if (dirdiff == DIRDIFF_45LEFT || dirdiff == DIRDIFF_45RIGHT) {
00441 if (lastpos != -1) {
00442 numcurve++;
00443 sum += pos - lastpos;
00444 if (pos - lastpos == 1) {
00445 max_speed = 88;
00446 }
00447 }
00448 lastpos = pos;
00449 }
00450
00451
00452 if (dirdiff == DIRDIFF_90LEFT || dirdiff == DIRDIFF_90RIGHT) {
00453 max_speed = 61;
00454 }
00455 }
00456
00457 if (numcurve > 0 && max_speed > 88) {
00458 if (curvecount[0] == 1 && curvecount[1] == 1) {
00459 max_speed = absolute_max_speed;
00460 } else {
00461 sum /= numcurve;
00462 max_speed = 232 - (13 - Clamp(sum, 1, 12)) * (13 - Clamp(sum, 1, 12));
00463 }
00464 }
00465
00466 if (max_speed != absolute_max_speed) {
00467
00468 const RailtypeInfo *rti = GetRailTypeInfo(v->railtype);
00469 max_speed += (max_speed / 2) * rti->curve_speed;
00470
00471 if (v->tcache.cached_tilt) {
00472
00473 max_speed += max_speed / 5;
00474 }
00475 }
00476
00477 return max_speed;
00478 }
00479
00481 static int GetTrainAcceleration(Train *v, bool mode)
00482 {
00483 int max_speed = v->tcache.cached_max_curve_speed;
00484 assert(max_speed == GetTrainCurveSpeedLimit(v));
00485 int speed = v->cur_speed * 10 / 16;
00486
00487 if (IsRailStationTile(v->tile) && v->IsFrontEngine()) {
00488 StationID sid = GetStationIndex(v->tile);
00489 if (v->current_order.ShouldStopAtStation(v, sid)) {
00490 int station_ahead;
00491 int station_length;
00492 int stop_at = GetTrainStopLocation(sid, v->tile, v, &station_ahead, &station_length);
00493
00494
00495
00496 int distance_to_go = station_ahead / TILE_SIZE - (station_length - stop_at) / TILE_SIZE;
00497
00498 if (distance_to_go > 0) {
00499 int st_max_speed = 120;
00500
00501 int delta_v = v->cur_speed / (distance_to_go + 1);
00502 if (v->max_speed > (v->cur_speed - delta_v)) {
00503 st_max_speed = v->cur_speed - (delta_v / 10);
00504 }
00505
00506 st_max_speed = max(st_max_speed, 25 * distance_to_go);
00507 max_speed = min(max_speed, st_max_speed);
00508 }
00509 }
00510 }
00511
00512 int mass = v->tcache.cached_weight;
00513 int power = v->tcache.cached_power * 746;
00514 max_speed = min(max_speed, v->tcache.cached_max_speed);
00515
00516 int num = 0;
00517 int incl = 0;
00518 int drag_coeff = 20;
00519 for (const Train *u = v; u != NULL; u = u->Next()) {
00520 num++;
00521 drag_coeff += 3;
00522
00523 if (u->track == TRACK_BIT_DEPOT) max_speed = min(max_speed, 61);
00524
00525 if (HasBit(u->flags, VRF_GOINGUP)) {
00526 incl += u->tcache.cached_veh_weight * 60;
00527 } else if (HasBit(u->flags, VRF_GOINGDOWN)) {
00528 incl -= u->tcache.cached_veh_weight * 60;
00529 }
00530 }
00531
00532 v->max_speed = max_speed;
00533
00534 const int area = 120;
00535 const int friction = 35;
00536 int resistance;
00537 if (v->railtype != RAILTYPE_MAGLEV) {
00538 resistance = 13 * mass / 10;
00539 resistance += 60 * num;
00540 resistance += friction * mass * speed / 1000;
00541 resistance += (area * drag_coeff * speed * speed) / 10000;
00542 } else {
00543 resistance = (area * (drag_coeff / 2) * speed * speed) / 10000;
00544 }
00545 resistance += incl;
00546 resistance *= 4;
00547
00548 const int max_te = v->tcache.cached_max_te;
00549 int force;
00550 if (speed > 0) {
00551 switch (v->railtype) {
00552 case RAILTYPE_RAIL:
00553 case RAILTYPE_ELECTRIC:
00554 case RAILTYPE_MONO:
00555 force = power / speed;
00556 force *= 22;
00557 force /= 10;
00558 if (mode == AM_ACCEL && force > max_te) force = max_te;
00559 break;
00560
00561 default: NOT_REACHED();
00562 case RAILTYPE_MAGLEV:
00563 force = power / 25;
00564 break;
00565 }
00566 } else {
00567
00568 force = (mode == AM_ACCEL && v->railtype != RAILTYPE_MAGLEV) ? min(max_te, power) : power;
00569 force = max(force, (mass * 8) + resistance);
00570 }
00571
00572 if (mode == AM_ACCEL) {
00573 return (force - resistance) / (mass * 2);
00574 } else {
00575 return min(-force - resistance, -10000) / mass;
00576 }
00577 }
00578
00579 void UpdateTrainAcceleration(Train *v)
00580 {
00581 assert(v->IsFrontEngine());
00582
00583 v->max_speed = v->tcache.cached_max_speed;
00584
00585 uint power = v->tcache.cached_power;
00586 uint weight = v->tcache.cached_weight;
00587 assert(weight != 0);
00588 v->acceleration = Clamp(power / weight * 4, 1, 255);
00589 }
00590
00596 int Train::GetDisplayImageWidth(Point *offset) const
00597 {
00598 int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
00599 int vehicle_pitch = 0;
00600
00601 const Engine *e = Engine::Get(this->engine_type);
00602 if (e->grffile != NULL && is_custom_sprite(e->u.rail.image_index)) {
00603 reference_width = e->grffile->traininfo_vehicle_width;
00604 vehicle_pitch = e->grffile->traininfo_vehicle_pitch;
00605 }
00606
00607 if (offset != NULL) {
00608 offset->x = reference_width / 2;
00609 offset->y = vehicle_pitch;
00610 }
00611 return this->tcache.cached_veh_length * reference_width / 8;
00612 }
00613
00614 static SpriteID GetDefaultTrainSprite(uint8 spritenum, Direction direction)
00615 {
00616 return ((direction + _engine_sprite_add[spritenum]) & _engine_sprite_and[spritenum]) + _engine_sprite_base[spritenum];
00617 }
00618
00619 SpriteID Train::GetImage(Direction direction) const
00620 {
00621 uint8 spritenum = this->spritenum;
00622 SpriteID sprite;
00623
00624 if (HasBit(this->flags, VRF_REVERSE_DIRECTION)) direction = ReverseDir(direction);
00625
00626 if (is_custom_sprite(spritenum)) {
00627 sprite = GetCustomVehicleSprite(this, (Direction)(direction + 4 * IS_CUSTOM_SECONDHEAD_SPRITE(spritenum)));
00628 if (sprite != 0) return sprite;
00629
00630 spritenum = Engine::Get(this->engine_type)->original_image_index;
00631 }
00632
00633 sprite = GetDefaultTrainSprite(spritenum, direction);
00634
00635 if (this->cargo.Count() >= this->cargo_cap / 2U) sprite += _wagon_full_adder[spritenum];
00636
00637 return sprite;
00638 }
00639
00640 static SpriteID GetRailIcon(EngineID engine, bool rear_head, int &y)
00641 {
00642 const Engine *e = Engine::Get(engine);
00643 Direction dir = rear_head ? DIR_E : DIR_W;
00644 uint8 spritenum = e->u.rail.image_index;
00645
00646 if (is_custom_sprite(spritenum)) {
00647 SpriteID sprite = GetCustomVehicleIcon(engine, dir);
00648 if (sprite != 0) {
00649 if (e->grffile != NULL) {
00650 y += e->grffile->traininfo_vehicle_pitch;
00651 }
00652 return sprite;
00653 }
00654
00655 spritenum = Engine::Get(engine)->original_image_index;
00656 }
00657
00658 if (rear_head) spritenum++;
00659
00660 return GetDefaultTrainSprite(spritenum, DIR_W);
00661 }
00662
00663 void DrawTrainEngine(int left, int right, int preferred_x, int y, EngineID engine, SpriteID pal)
00664 {
00665 if (RailVehInfo(engine)->railveh_type == RAILVEH_MULTIHEAD) {
00666 int yf = y;
00667 int yr = y;
00668
00669 SpriteID spritef = GetRailIcon(engine, false, yf);
00670 SpriteID spriter = GetRailIcon(engine, true, yr);
00671 const Sprite *real_spritef = GetSprite(spritef, ST_NORMAL);
00672 const Sprite *real_spriter = GetSprite(spriter, ST_NORMAL);
00673
00674 preferred_x = Clamp(preferred_x, left - real_spritef->x_offs + 14, right - real_spriter->width - real_spriter->x_offs - 15);
00675
00676 DrawSprite(spritef, pal, preferred_x - 14, yf);
00677 DrawSprite(spriter, pal, preferred_x + 15, yr);
00678 } else {
00679 SpriteID sprite = GetRailIcon(engine, false, y);
00680 const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
00681 preferred_x = Clamp(preferred_x, left - real_sprite->x_offs, right - real_sprite->width - real_sprite->x_offs);
00682 DrawSprite(sprite, pal, preferred_x, y);
00683 }
00684 }
00685
00686 static CommandCost CmdBuildRailWagon(EngineID engine, TileIndex tile, DoCommandFlag flags)
00687 {
00688 const Engine *e = Engine::Get(engine);
00689 const RailVehicleInfo *rvi = &e->u.rail;
00690 CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
00691
00692
00693 if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
00694
00695 if (flags & DC_QUERY_COST) return value;
00696
00697
00698 if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00699
00700 uint num_vehicles = 1 + CountArticulatedParts(engine, false);
00701
00702
00703 if (!Vehicle::CanAllocateItem(num_vehicles)) {
00704 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00705 }
00706
00707 if (flags & DC_EXEC) {
00708 Train *v = new Train();
00709 v->spritenum = rvi->image_index;
00710
00711 v->engine_type = engine;
00712 v->tcache.first_engine = INVALID_ENGINE;
00713
00714 DiagDirection dir = GetRailDepotDirection(tile);
00715
00716 v->direction = DiagDirToDir(dir);
00717 v->tile = tile;
00718
00719 int x = TileX(tile) * TILE_SIZE | _vehicle_initial_x_fract[dir];
00720 int y = TileY(tile) * TILE_SIZE | _vehicle_initial_y_fract[dir];
00721
00722 v->x_pos = x;
00723 v->y_pos = y;
00724 v->z_pos = GetSlopeZ(x, y);
00725 v->owner = _current_company;
00726 v->track = TRACK_BIT_DEPOT;
00727 v->vehstatus = VS_HIDDEN | VS_DEFPAL;
00728
00729
00730 v->SetWagon();
00731
00732 v->SetFreeWagon();
00733 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00734
00735 v->cargo_type = e->GetDefaultCargoType();
00736
00737 v->cargo_cap = rvi->capacity;
00738 v->value = value.GetCost();
00739
00740
00741 v->railtype = rvi->railtype;
00742
00743 v->build_year = _cur_year;
00744 v->cur_image = SPR_IMG_QUERY;
00745 v->random_bits = VehicleRandomBits();
00746
00747 v->group_id = DEFAULT_GROUP;
00748
00749 AddArticulatedParts(v);
00750
00751 _new_vehicle_id = v->index;
00752
00753 VehicleMove(v, false);
00754 TrainConsistChanged(v->First(), false);
00755 UpdateTrainGroupID(v->First());
00756
00757 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
00758 if (IsLocalCompany()) {
00759 InvalidateAutoreplaceWindow(v->engine_type, v->group_id);
00760 }
00761 Company::Get(_current_company)->num_engines[engine]++;
00762
00763 CheckConsistencyOfArticulatedVehicle(v);
00764
00765
00766 Train *w;
00767 FOR_ALL_TRAINS(w) {
00768
00769 if (w->tile == tile && w->IsFreeWagon() &&
00770 w->engine_type == engine &&
00771 !(w->vehstatus & VS_CRASHED)) {
00772 DoCommand(0, v->index | (w->Last()->index << 16), 1, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
00773 break;
00774 }
00775 }
00776 }
00777
00778 return value;
00779 }
00780
00782 static void NormalizeTrainVehInDepot(const Train *u)
00783 {
00784 const Train *v;
00785 FOR_ALL_TRAINS(v) {
00786 if (v->IsFreeWagon() && v->tile == u->tile &&
00787 v->track == TRACK_BIT_DEPOT) {
00788 if (CmdFailed(DoCommand(0, v->index | (u->index << 16), 1, DC_EXEC,
00789 CMD_MOVE_RAIL_VEHICLE)))
00790 break;
00791 }
00792 }
00793 }
00794
00795 static void AddRearEngineToMultiheadedTrain(Train *v)
00796 {
00797 Train *u = new Train();
00798 v->value >>= 1;
00799 u->value = v->value;
00800 u->direction = v->direction;
00801 u->owner = v->owner;
00802 u->tile = v->tile;
00803 u->x_pos = v->x_pos;
00804 u->y_pos = v->y_pos;
00805 u->z_pos = v->z_pos;
00806 u->track = TRACK_BIT_DEPOT;
00807 u->vehstatus = v->vehstatus & ~VS_STOPPED;
00808
00809 u->spritenum = v->spritenum + 1;
00810 u->cargo_type = v->cargo_type;
00811 u->cargo_subtype = v->cargo_subtype;
00812 u->cargo_cap = v->cargo_cap;
00813 u->railtype = v->railtype;
00814 u->engine_type = v->engine_type;
00815 u->build_year = v->build_year;
00816 u->cur_image = SPR_IMG_QUERY;
00817 u->random_bits = VehicleRandomBits();
00818 v->SetMultiheaded();
00819 u->SetMultiheaded();
00820 v->SetNext(u);
00821 VehicleMove(u, false);
00822
00823
00824 v->other_multiheaded_part = u;
00825 u->other_multiheaded_part = v;
00826 }
00827
00836 CommandCost CmdBuildRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00837 {
00838
00839 if (!IsEngineBuildable(p1, VEH_TRAIN, _current_company)) return_cmd_error(STR_ERROR_RAIL_VEHICLE_NOT_AVAILABLE);
00840
00841 const Engine *e = Engine::Get(p1);
00842 const RailVehicleInfo *rvi = &e->u.rail;
00843 CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
00844
00845
00846 if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
00847
00848 if (flags & DC_QUERY_COST) return value;
00849
00850
00851
00852 if (!IsRailDepotTile(tile)) return CMD_ERROR;
00853 if (!IsTileOwner(tile, _current_company)) return CMD_ERROR;
00854
00855 if (rvi->railveh_type == RAILVEH_WAGON) return CmdBuildRailWagon(p1, tile, flags);
00856
00857 uint num_vehicles =
00858 (rvi->railveh_type == RAILVEH_MULTIHEAD ? 2 : 1) +
00859 CountArticulatedParts(p1, false);
00860
00861
00862
00863 if (!HasPowerOnRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
00864
00865
00866 if (!Vehicle::CanAllocateItem(num_vehicles)) {
00867 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00868 }
00869
00870 UnitID unit_num = (flags & DC_AUTOREPLACE) ? 0 : GetFreeUnitNumber(VEH_TRAIN);
00871 if (unit_num > _settings_game.vehicle.max_trains) {
00872 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
00873 }
00874
00875 if (flags & DC_EXEC) {
00876 DiagDirection dir = GetRailDepotDirection(tile);
00877 int x = TileX(tile) * TILE_SIZE + _vehicle_initial_x_fract[dir];
00878 int y = TileY(tile) * TILE_SIZE + _vehicle_initial_y_fract[dir];
00879
00880 Train *v = new Train();
00881 v->unitnumber = unit_num;
00882 v->direction = DiagDirToDir(dir);
00883 v->tile = tile;
00884 v->owner = _current_company;
00885 v->x_pos = x;
00886 v->y_pos = y;
00887 v->z_pos = GetSlopeZ(x, y);
00888
00889 v->track = TRACK_BIT_DEPOT;
00890 v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
00891 v->spritenum = rvi->image_index;
00892 v->cargo_type = e->GetDefaultCargoType();
00893
00894 v->cargo_cap = rvi->capacity;
00895 v->max_speed = rvi->max_speed;
00896 v->value = value.GetCost();
00897 v->last_station_visited = INVALID_STATION;
00898
00899
00900 v->engine_type = p1;
00901 v->tcache.first_engine = INVALID_ENGINE;
00902
00903 v->reliability = e->reliability;
00904 v->reliability_spd_dec = e->reliability_spd_dec;
00905 v->max_age = e->GetLifeLengthInDays();
00906
00907 v->name = NULL;
00908 v->railtype = rvi->railtype;
00909 _new_vehicle_id = v->index;
00910
00911 v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_trains;
00912 v->date_of_last_service = _date;
00913 v->build_year = _cur_year;
00914 v->cur_image = SPR_IMG_QUERY;
00915 v->random_bits = VehicleRandomBits();
00916
00917
00918 if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
00919
00920 v->group_id = DEFAULT_GROUP;
00921
00922
00923 v->SetFrontEngine();
00924 v->SetEngine();
00925
00926 VehicleMove(v, false);
00927
00928 if (rvi->railveh_type == RAILVEH_MULTIHEAD) {
00929 AddRearEngineToMultiheadedTrain(v);
00930 } else {
00931 AddArticulatedParts(v);
00932 }
00933
00934 TrainConsistChanged(v, false);
00935 UpdateTrainGroupID(v);
00936
00937 if (!HasBit(p2, 1) && !(flags & DC_AUTOREPLACE)) {
00938 NormalizeTrainVehInDepot(v);
00939 }
00940
00941 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
00942 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
00943 SetWindowDirty(WC_COMPANY, v->owner);
00944 if (IsLocalCompany()) {
00945 InvalidateAutoreplaceWindow(v->engine_type, v->group_id);
00946 }
00947
00948 Company::Get(_current_company)->num_engines[p1]++;
00949
00950 CheckConsistencyOfArticulatedVehicle(v);
00951 }
00952
00953 return value;
00954 }
00955
00956
00957 bool Train::IsInDepot() const
00958 {
00959
00960 if (!IsRailDepotTile(this->tile) || this->cur_speed != 0) return false;
00961
00962
00963 for (const Train *v = this; v != NULL; v = v->Next()) {
00964 if (v->track != TRACK_BIT_DEPOT || v->tile != this->tile) return false;
00965 }
00966
00967 return true;
00968 }
00969
00970 bool Train::IsStoppedInDepot() const
00971 {
00972
00973 if (this->IsFrontEngine() && !(this->vehstatus & VS_STOPPED)) return false;
00974 return this->IsInDepot();
00975 }
00976
00977 static Train *FindGoodVehiclePos(const Train *src)
00978 {
00979 EngineID eng = src->engine_type;
00980 TileIndex tile = src->tile;
00981
00982 Train *dst;
00983 FOR_ALL_TRAINS(dst) {
00984 if (dst->IsFreeWagon() && dst->tile == tile && !(dst->vehstatus & VS_CRASHED)) {
00985
00986 Train *t = dst;
00987 while (t->engine_type == eng) {
00988 t = t->Next();
00989 if (t == NULL) return dst;
00990 }
00991 }
00992 }
00993
00994 return NULL;
00995 }
00996
00998 typedef SmallVector<Train *, 16> TrainList;
00999
01005 static void MakeTrainBackup(TrainList &list, Train *t)
01006 {
01007 for (; t != NULL; t = t->Next()) *list.Append() = t;
01008 }
01009
01014 static void RestoreTrainBackup(TrainList &list)
01015 {
01016
01017 if (list.Length() == 0) return;
01018
01019 Train *prev = NULL;
01020
01021 for (Train **iter = list.Begin(); iter != list.End(); iter++) {
01022 Train *t = *iter;
01023 if (prev != NULL) {
01024 prev->SetNext(t);
01025 } else if (t->Previous() != NULL) {
01026
01027 t->Previous()->SetNext(NULL);
01028 }
01029 prev = t;
01030 }
01031 }
01032
01038 static void RemoveFromConsist(Train *part, bool chain = false)
01039 {
01040 Train *tail = chain ? part->Last() : part->GetLastEnginePart();
01041
01042
01043
01044 if (part->Previous() != NULL) part->Previous()->SetNext(tail->Next());
01045
01046
01047 tail->SetNext(NULL);
01048 }
01049
01055 static void InsertInConsist(Train *dst, Train *chain)
01056 {
01057
01058 assert(dst->Next() == NULL || !dst->Next()->IsArticulatedPart());
01059
01060 chain->Last()->SetNext(dst->Next());
01061 dst->SetNext(chain);
01062 }
01063
01069 static void NormaliseDualHeads(Train *t)
01070 {
01071 for (; t != NULL; t = t->GetNextVehicle()) {
01072 if (!t->IsMultiheaded() || !t->IsEngine()) continue;
01073
01074
01075 Train *u;
01076 for (u = t; u->Next() != NULL && !u->Next()->IsEngine(); u = u->Next()) {}
01077
01078 if (u == t->other_multiheaded_part) continue;
01079
01080
01081 RemoveFromConsist(t->other_multiheaded_part);
01082
01083 InsertInConsist(u, t->other_multiheaded_part);
01084 }
01085 }
01086
01091 static void NormaliseSubtypes(Train *chain)
01092 {
01093
01094 if (chain == NULL) return;
01095
01096
01097 assert(chain->Previous() == NULL);
01098
01099
01100 if (chain->IsWagon()) {
01101 chain->SetFreeWagon();
01102 } else {
01103 assert(chain->IsEngine());
01104 chain->SetFrontEngine();
01105 }
01106
01107
01108 for (Train *t = chain->Next(); t != NULL; t = t->Next()) {
01109 t->ClearFreeWagon();
01110 t->ClearFrontEngine();
01111 }
01112 }
01113
01123 static CommandCost CheckNewTrain(Train *original_dst, Train *dst, Train *original_src, Train *src)
01124 {
01125
01126
01127
01128 if ((src != NULL && src->IsEngine() ? 1 : 0) +
01129 (dst != NULL && dst->IsEngine() ? 1 : 0) -
01130 (original_src != NULL && original_src->IsEngine() ? 1 : 0) -
01131 (original_dst != NULL && original_dst->IsEngine() ? 1 : 0) <= 0) {
01132 return CommandCost();
01133 }
01134
01135
01136
01137 if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) return CommandCost();
01138
01139 return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
01140 }
01141
01147 static CommandCost CheckTrainAttachment(Train *t)
01148 {
01149
01150 if (t == NULL || t->Next() == NULL || !t->IsEngine()) return CommandCost();
01151
01152
01153
01154 int allowed_len = _settings_game.vehicle.mammoth_trains ? 100 : 10;
01155
01156 Train *head = t;
01157 Train *prev = t;
01158
01159
01160 t = t->Next();
01161 allowed_len--;
01162 prev->SetNext(NULL);
01163
01164
01165 head->InvalidateNewGRFCache();
01166
01167 while (t != NULL) {
01168 Train *next = t->Next();
01169
01170
01171
01172 t->SetNext(NULL);
01173
01174
01175 if (!t->IsArticulatedPart() && !t->IsRearDualheaded()) {
01176 allowed_len--;
01177
01178
01179 EngineID first_engine = t->tcache.first_engine;
01180 t->tcache.first_engine = INVALID_ENGINE;
01181
01182
01183
01184 t->InvalidateNewGRFCache();
01185
01186 uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, head->engine_type, t, head);
01187
01188
01189 t->tcache.first_engine = first_engine;
01190
01191
01192 t->InvalidateNewGRFCache();
01193 head->InvalidateNewGRFCache();
01194
01195 if (callback != CALLBACK_FAILED) {
01196
01197 StringID error = STR_NULL;
01198
01199 if (callback == 0xFD) error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
01200 if (callback < 0xFD) error = GetGRFStringID(GetEngineGRFID(head->engine_type), 0xD000 + callback);
01201
01202 if (error != STR_NULL) return_cmd_error(error);
01203 }
01204 }
01205
01206
01207 prev->SetNext(t);
01208 prev = t;
01209 t = next;
01210 }
01211
01212 if (allowed_len <= 0) return_cmd_error(STR_ERROR_TRAIN_TOO_LONG);
01213 return CommandCost();
01214 }
01215
01225 static CommandCost ValidateTrains(Train *original_dst, Train *dst, Train *original_src, Train *src)
01226 {
01227
01228 CommandCost ret = CheckTrainAttachment(src);
01229 if (ret.Failed()) return ret;
01230 ret = CheckTrainAttachment(dst);
01231 if (ret.Failed()) return ret;
01232
01233
01234 return CheckNewTrain(original_dst, dst, original_src, src);
01235 }
01236
01245 static void ArrangeTrains(Train **dst_head, Train *dst, Train **src_head, Train *src, bool move_chain)
01246 {
01247
01248 if (*src_head == *dst_head) {
01249
01250
01251 *dst_head = NULL;
01252 } else if (*dst_head == NULL) {
01253
01254
01255 *dst_head = src;
01256 }
01257
01258 if (src == *src_head) {
01259
01260
01261
01262
01263
01264
01265 *src_head = move_chain ? NULL :
01266 (src->IsMultiheaded() ? src->GetNextUnit() : src->GetNextVehicle());
01267 }
01268
01269
01270
01271
01272 RemoveFromConsist(src, move_chain);
01273 if (*dst_head != src) InsertInConsist(dst, src);
01274
01275
01276
01277 NormaliseDualHeads(*src_head);
01278 NormaliseDualHeads(*dst_head);
01279 }
01280
01286 static void NormaliseTrainHead(Train *head)
01287 {
01288
01289 if (head == NULL) return;
01290
01291
01292 TrainConsistChanged(head, false);
01293 UpdateTrainGroupID(head);
01294
01295
01296 if (!head->IsFrontEngine()) return;
01297
01298
01299 SetWindowDirty(WC_VEHICLE_REFIT, head->index);
01300 SetWindowWidgetDirty(WC_VEHICLE_VIEW, head->index, VVW_WIDGET_REFIT_VEH);
01301
01302
01303 if (head->unitnumber != 0) return;
01304 head->unitnumber = GetFreeUnitNumber(VEH_TRAIN);
01305 }
01306
01318 CommandCost CmdMoveRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01319 {
01320 VehicleID s = GB(p1, 0, 16);
01321 VehicleID d = GB(p1, 16, 16);
01322 bool move_chain = HasBit(p2, 0);
01323
01324 Train *src = Train::GetIfValid(s);
01325 if (src == NULL || !CheckOwnership(src->owner)) return CMD_ERROR;
01326
01327
01328 if (src->vehstatus & VS_CRASHED) return CMD_ERROR;
01329
01330
01331 Train *dst;
01332 if (d == INVALID_VEHICLE) {
01333 dst = src->IsEngine() ? NULL : FindGoodVehiclePos(src);
01334 } else {
01335 dst = Train::GetIfValid(d);
01336 if (dst == NULL || !CheckOwnership(dst->owner)) return CMD_ERROR;
01337
01338
01339 if (dst->vehstatus & VS_CRASHED) return CMD_ERROR;
01340 }
01341
01342
01343 src = src->GetFirstEnginePart();
01344 if (dst != NULL) {
01345 dst = dst->GetFirstEnginePart();
01346 }
01347
01348
01349 if (src == dst) return CommandCost();
01350
01351
01352 Train *src_head = src->First();
01353 Train *dst_head;
01354 if (dst != NULL) {
01355 dst_head = dst->First();
01356 if (dst_head->tile != src_head->tile) return CMD_ERROR;
01357
01358 dst = dst->GetLastEnginePart();
01359 } else {
01360 dst_head = NULL;
01361 }
01362
01363 if (src->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01364
01365
01366 if (move_chain && src_head == dst_head) return CommandCost();
01367
01368
01369 if (!move_chain && dst != NULL && dst->IsRearDualheaded() && src == dst->other_multiheaded_part) return CommandCost();
01370
01371
01372 if (!src_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01373
01374
01375 if (dst_head != NULL && !dst_head->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01376
01377
01378
01379 TrainList original_src;
01380 TrainList original_dst;
01381
01382 MakeTrainBackup(original_src, src_head);
01383 MakeTrainBackup(original_dst, dst_head);
01384
01385
01386
01387
01388 Train *original_src_head = src_head;
01389 Train *original_dst_head = (dst_head == src_head ? NULL : dst_head);
01390
01391
01392 ArrangeTrains(&dst_head, dst, &src_head, src, move_chain);
01393
01394 if ((flags & DC_AUTOREPLACE) == 0) {
01395
01396
01397
01398 CommandCost ret = ValidateTrains(original_dst_head, dst_head, original_src_head, src_head);
01399 if (ret.Failed()) {
01400
01401 RestoreTrainBackup(original_src);
01402 RestoreTrainBackup(original_dst);
01403 return ret;
01404 }
01405 }
01406
01407
01408 if (flags & DC_EXEC) {
01409
01410 NormaliseSubtypes(src_head);
01411 NormaliseSubtypes(dst_head);
01412
01413
01414
01415
01416
01417
01418
01419
01420
01421
01422
01423
01424
01425
01426
01427
01428
01429
01430
01431
01432
01433 if (src == original_src_head && src->IsEngine() && !src->IsFrontEngine()) {
01434
01435 DeleteWindowById(WC_VEHICLE_VIEW, src->index);
01436 DeleteWindowById(WC_VEHICLE_ORDERS, src->index);
01437 DeleteWindowById(WC_VEHICLE_REFIT, src->index);
01438 DeleteWindowById(WC_VEHICLE_DETAILS, src->index);
01439 DeleteWindowById(WC_VEHICLE_TIMETABLE, src->index);
01440
01441
01442
01443
01444
01445
01446
01447
01448 if (dst_head != NULL ? dst_head != src : !src_head->IsFrontEngine()) {
01449 DecreaseGroupNumVehicle(src->group_id);
01450 }
01451
01452
01453
01454 DeleteVehicleOrders(src);
01455 RemoveVehicleFromGroup(src);
01456 src->unitnumber = 0;
01457 }
01458
01459
01460
01461 if (original_src_head != src && dst_head == src) {
01462 SetTrainGroupID(src, DEFAULT_GROUP);
01463 }
01464
01465
01466 NormaliseTrainHead(src_head);
01467 NormaliseTrainHead(dst_head);
01468
01469
01470 InvalidateWindowData(WC_VEHICLE_DEPOT, src->tile);
01471 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01472 } else {
01473
01474 RestoreTrainBackup(original_src);
01475 RestoreTrainBackup(original_dst);
01476 }
01477
01478 return CommandCost();
01479 }
01480
01492 CommandCost CmdSellRailWagon(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01493 {
01494
01495 Window *w = NULL;
01496
01497 Train *v = Train::GetIfValid(p1);
01498 if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
01499
01500
01501 bool sell_chain = HasBit(p2, 0);
01502
01503 if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_CAN_T_SELL_DESTROYED_VEHICLE);
01504
01505 v = v->GetFirstEnginePart();
01506 Train *first = v->First();
01507
01508
01509 if (!first->IsStoppedInDepot()) {
01510 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01511 }
01512
01513 if (v->IsRearDualheaded()) return_cmd_error(STR_ERROR_REAR_ENGINE_FOLLOW_FRONT);
01514
01515
01516
01517 TrainList original;
01518 MakeTrainBackup(original, first);
01519
01520
01521 Train *new_head = first;
01522 Train *sell_head = NULL;
01523
01524
01525 ArrangeTrains(&sell_head, NULL, &new_head, v, sell_chain);
01526
01527
01528 CommandCost ret = ValidateTrains(NULL, NULL, first, new_head);
01529 if (ret.Failed()) {
01530
01531 RestoreTrainBackup(original);
01532 return ret;
01533 }
01534
01535 CommandCost cost(EXPENSES_NEW_VEHICLES);
01536 for (Train *t = sell_head; t != NULL; t = t->Next()) cost.AddCost(-t->value);
01537
01538
01539 if (flags & DC_EXEC) {
01540
01541 NormaliseSubtypes(new_head);
01542
01543 if (v == first && v->IsEngine() && !sell_chain && new_head != NULL && new_head->IsFrontEngine()) {
01544
01545
01546 new_head->orders.list = first->orders.list;
01547 new_head->AddToShared(first);
01548 DeleteVehicleOrders(first);
01549
01550
01551 new_head->CopyVehicleConfigAndStatistics(first);
01552 IncreaseGroupNumVehicle(new_head->group_id);
01553
01554
01555 if (IsLocalCompany() && w != NULL) ShowVehicleViewWindow(new_head);
01556 }
01557
01558
01559 NormaliseTrainHead(new_head);
01560
01561
01562 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01563 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
01564
01565
01566 delete sell_head;
01567 } else {
01568
01569 RestoreTrainBackup(original);
01570 }
01571
01572 return cost;
01573 }
01574
01575 void Train::UpdateDeltaXY(Direction direction)
01576 {
01577 #define MKIT(a, b, c, d) ((a & 0xFF) << 24) | ((b & 0xFF) << 16) | ((c & 0xFF) << 8) | ((d & 0xFF) << 0)
01578 static const uint32 _delta_xy_table[8] = {
01579 MKIT(3, 3, -1, -1),
01580 MKIT(3, 7, -1, -3),
01581 MKIT(3, 3, -1, -1),
01582 MKIT(7, 3, -3, -1),
01583 MKIT(3, 3, -1, -1),
01584 MKIT(3, 7, -1, -3),
01585 MKIT(3, 3, -1, -1),
01586 MKIT(7, 3, -3, -1),
01587 };
01588 #undef MKIT
01589
01590 uint32 x = _delta_xy_table[direction];
01591 this->x_offs = GB(x, 0, 8);
01592 this->y_offs = GB(x, 8, 8);
01593 this->x_extent = GB(x, 16, 8);
01594 this->y_extent = GB(x, 24, 8);
01595 this->z_extent = 6;
01596 }
01597
01598 static inline void SetLastSpeed(Train *v, int spd)
01599 {
01600 int old = v->tcache.last_speed;
01601 if (spd != old) {
01602 v->tcache.last_speed = spd;
01603 if (_settings_client.gui.vehicle_speed || (old == 0) != (spd == 0)) {
01604 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01605 }
01606 }
01607 }
01608
01610 static void MarkTrainAsStuck(Train *v)
01611 {
01612 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) {
01613
01614 SetBit(v->flags, VRF_TRAIN_STUCK);
01615
01616
01617 if (v->current_order.IsType(OT_LOADING)) return;
01618
01619 v->time_counter = 0;
01620
01621
01622 v->cur_speed = 0;
01623 v->subspeed = 0;
01624 SetLastSpeed(v, 0);
01625
01626 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01627 }
01628 }
01629
01630 static void SwapTrainFlags(uint16 *swap_flag1, uint16 *swap_flag2)
01631 {
01632 uint16 flag1 = *swap_flag1;
01633 uint16 flag2 = *swap_flag2;
01634
01635
01636 ClrBit(*swap_flag1, VRF_GOINGUP);
01637 ClrBit(*swap_flag1, VRF_GOINGDOWN);
01638 ClrBit(*swap_flag2, VRF_GOINGUP);
01639 ClrBit(*swap_flag2, VRF_GOINGDOWN);
01640
01641
01642 if (HasBit(flag1, VRF_GOINGUP)) {
01643 SetBit(*swap_flag2, VRF_GOINGDOWN);
01644 } else if (HasBit(flag1, VRF_GOINGDOWN)) {
01645 SetBit(*swap_flag2, VRF_GOINGUP);
01646 }
01647 if (HasBit(flag2, VRF_GOINGUP)) {
01648 SetBit(*swap_flag1, VRF_GOINGDOWN);
01649 } else if (HasBit(flag2, VRF_GOINGDOWN)) {
01650 SetBit(*swap_flag1, VRF_GOINGUP);
01651 }
01652 }
01653
01654 static void ReverseTrainSwapVeh(Train *v, int l, int r)
01655 {
01656 Train *a, *b;
01657
01658
01659 for (a = v; l != 0; l--) a = a->Next();
01660 for (b = v; r != 0; r--) b = b->Next();
01661
01662 if (a != b) {
01663
01664 {
01665 uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus&VS_HIDDEN);
01666 b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus&VS_HIDDEN);
01667 a->vehstatus = tmp;
01668 }
01669
01670 Swap(a->track, b->track);
01671 Swap(a->direction, b->direction);
01672
01673
01674 if (a->track != TRACK_BIT_DEPOT) a->direction = ReverseDir(a->direction);
01675 if (b->track != TRACK_BIT_DEPOT) b->direction = ReverseDir(b->direction);
01676
01677 Swap(a->x_pos, b->x_pos);
01678 Swap(a->y_pos, b->y_pos);
01679 Swap(a->tile, b->tile);
01680 Swap(a->z_pos, b->z_pos);
01681
01682 SwapTrainFlags(&a->flags, &b->flags);
01683
01684
01685 a->UpdateViewport(true, true);
01686 b->UpdateViewport(true, true);
01687
01688
01689 if (a->track != TRACK_BIT_WORMHOLE) VehicleEnterTile(a, a->tile, a->x_pos, a->y_pos);
01690 if (b->track != TRACK_BIT_WORMHOLE) VehicleEnterTile(b, b->tile, b->x_pos, b->y_pos);
01691 } else {
01692 if (a->track != TRACK_BIT_DEPOT) a->direction = ReverseDir(a->direction);
01693 a->UpdateViewport(true, true);
01694
01695 if (a->track != TRACK_BIT_WORMHOLE) VehicleEnterTile(a, a->tile, a->x_pos, a->y_pos);
01696 }
01697
01698
01699 TrainPowerChanged(v);
01700 }
01701
01702
01708 static Vehicle *TrainOnTileEnum(Vehicle *v, void *)
01709 {
01710 return (v->type == VEH_TRAIN) ? v : NULL;
01711 }
01712
01713
01720 static Vehicle *TrainApproachingCrossingEnum(Vehicle *v, void *data)
01721 {
01722 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
01723
01724 Train *t = Train::From(v);
01725 if (!t->IsFrontEngine()) return NULL;
01726
01727 TileIndex tile = *(TileIndex *)data;
01728
01729 if (TrainApproachingCrossingTile(t) != tile) return NULL;
01730
01731 return t;
01732 }
01733
01734
01741 static bool TrainApproachingCrossing(TileIndex tile)
01742 {
01743 assert(IsLevelCrossingTile(tile));
01744
01745 DiagDirection dir = AxisToDiagDir(GetCrossingRailAxis(tile));
01746 TileIndex tile_from = tile + TileOffsByDiagDir(dir);
01747
01748 if (HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum)) return true;
01749
01750 dir = ReverseDiagDir(dir);
01751 tile_from = tile + TileOffsByDiagDir(dir);
01752
01753 return HasVehicleOnPos(tile_from, &tile, &TrainApproachingCrossingEnum);
01754 }
01755
01756
01763 void UpdateLevelCrossing(TileIndex tile, bool sound)
01764 {
01765 assert(IsLevelCrossingTile(tile));
01766
01767
01768 bool new_state = HasVehicleOnPos(tile, NULL, &TrainOnTileEnum) || TrainApproachingCrossing(tile) || HasCrossingReservation(tile);
01769
01770 if (new_state != IsCrossingBarred(tile)) {
01771 if (new_state && sound) {
01772 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01773 }
01774 SetCrossingBarred(tile, new_state);
01775 MarkTileDirtyByTile(tile);
01776 }
01777 }
01778
01779
01785 static inline void MaybeBarCrossingWithSound(TileIndex tile)
01786 {
01787 if (!IsCrossingBarred(tile)) {
01788 BarCrossing(tile);
01789 SndPlayTileFx(SND_0E_LEVEL_CROSSING, tile);
01790 MarkTileDirtyByTile(tile);
01791 }
01792 }
01793
01794
01800 static void AdvanceWagonsBeforeSwap(Train *v)
01801 {
01802 Train *base = v;
01803 Train *first = base;
01804 Train *last = v->Last();
01805 uint length = CountVehiclesInChain(v);
01806
01807 while (length > 2) {
01808 last = last->Previous();
01809 first = first->Next();
01810
01811 int differential = base->tcache.cached_veh_length - last->tcache.cached_veh_length;
01812
01813
01814
01815 for (int i = 0; i < differential; i++) TrainController(first, last->Next());
01816
01817 base = first;
01818 length -= 2;
01819 }
01820 }
01821
01822
01828 static void AdvanceWagonsAfterSwap(Train *v)
01829 {
01830
01831 Train *dep = v;
01832 while (dep->Next() != NULL && (dep->track == TRACK_BIT_DEPOT || dep->Next()->track != TRACK_BIT_DEPOT)) {
01833 dep = dep->Next();
01834 }
01835
01836 Train *leave = dep->Next();
01837
01838 if (leave != NULL) {
01839
01840 int d = TicksToLeaveDepot(dep);
01841
01842 if (d <= 0) {
01843 leave->vehstatus &= ~VS_HIDDEN;
01844 leave->track = TrackToTrackBits(GetRailDepotTrack(leave->tile));
01845 for (int i = 0; i >= d; i--) TrainController(leave, NULL);
01846 }
01847 } else {
01848 dep = NULL;
01849 }
01850
01851 Train *base = v;
01852 Train *first = base;
01853 Train *last = v->Last();
01854 uint length = CountVehiclesInChain(v);
01855
01856
01857
01858 bool nomove = (dep == NULL);
01859
01860 while (length > 2) {
01861
01862
01863 if (base == dep) break;
01864
01865
01866 if (last == dep) nomove = true;
01867
01868 last = last->Previous();
01869 first = first->Next();
01870
01871 int differential = last->tcache.cached_veh_length - base->tcache.cached_veh_length;
01872
01873
01874 for (int i = 0; i < differential; i++) TrainController(first, (nomove ? last->Next() : NULL));
01875
01876 base = first;
01877 length -= 2;
01878 }
01879 }
01880
01881
01882 static void ReverseTrainDirection(Train *v)
01883 {
01884 if (IsRailDepotTile(v->tile)) {
01885 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01886 }
01887
01888
01889 if (!HasBit(v->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(v);
01890
01891
01892 TileIndex crossing = TrainApproachingCrossingTile(v);
01893
01894
01895 int r = CountVehiclesInChain(v) - 1;
01896
01897 AdvanceWagonsBeforeSwap(v);
01898
01899
01900 int l = 0;
01901 do {
01902 ReverseTrainSwapVeh(v, l++, r--);
01903 } while (l <= r);
01904
01905 AdvanceWagonsAfterSwap(v);
01906
01907 if (IsRailDepotTile(v->tile)) {
01908 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01909 }
01910
01911 ToggleBit(v->flags, VRF_TOGGLE_REVERSE);
01912
01913 ClrBit(v->flags, VRF_REVERSING);
01914
01915
01916 TrainConsistChanged(v, true);
01917
01918
01919 for (Vehicle *u = v; u != NULL; u = u->Next()) u->UpdateViewport(false, false);
01920
01921
01922 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
01923
01924
01925 crossing = TrainApproachingCrossingTile(v);
01926 if (crossing != INVALID_TILE) MaybeBarCrossingWithSound(crossing);
01927
01928
01929 if (v->track == TRACK_BIT_DEPOT) {
01930
01931 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
01932 ClrBit(v->flags, VRF_TRAIN_STUCK);
01933 return;
01934 }
01935
01936
01937
01938 DiagDirection dir = TrainExitDir(v->direction, v->track);
01939 if (IsRailDepotTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE)) dir = INVALID_DIAGDIR;
01940
01941 if (UpdateSignalsOnSegment(v->tile, dir, v->owner) == SIGSEG_PBS || _settings_game.pf.reserve_paths) {
01942
01943
01944 bool first_tile_okay = !(IsTileType(v->tile, MP_RAILWAY) &&
01945 HasSignalOnTrackdir(v->tile, v->GetVehicleTrackdir()) &&
01946 !IsPbsSignal(GetSignalType(v->tile, FindFirstTrack(v->track))));
01947
01948 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
01949 if (TryPathReserve(v, false, first_tile_okay)) {
01950
01951 CheckNextTrainTile(v);
01952 } else if (v->current_order.GetType() != OT_LOADING) {
01953
01954 MarkTrainAsStuck(v);
01955 }
01956 } else if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
01957
01958 ClrBit(v->flags, VRF_TRAIN_STUCK);
01959 v->time_counter = 0;
01960 }
01961 }
01962
01971 CommandCost CmdReverseTrainDirection(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
01972 {
01973 Train *v = Train::GetIfValid(p1);
01974 if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
01975
01976 if (p2 != 0) {
01977
01978
01979 if (v->IsMultiheaded() || HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) {
01980 return_cmd_error(STR_ERROR_CAN_T_REVERSE_DIRECTION_RAIL_VEHICLE_MULTIPLE_UNITS);
01981 }
01982
01983 Train *front = v->First();
01984
01985 if (!front->IsStoppedInDepot()) {
01986 return_cmd_error(STR_ERROR_TRAINS_CAN_ONLY_BE_ALTERED_INSIDE_A_DEPOT);
01987 }
01988
01989 if (flags & DC_EXEC) {
01990 ToggleBit(v->flags, VRF_REVERSE_DIRECTION);
01991 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
01992 SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
01993
01994 v->force_proceed = 0;
01995 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
01996 }
01997 } else {
01998
01999 if ((v->vehstatus & VS_CRASHED) || v->breakdown_ctr != 0) return CMD_ERROR;
02000
02001 if (flags & DC_EXEC) {
02002
02003 if (v->current_order.IsType(OT_LOADING)) {
02004 const Vehicle *last = v;
02005 while (last->Next() != NULL) last = last->Next();
02006
02007
02008 if (!IsTileType(last->tile, MP_STATION) || GetStationIndex(last->tile) != GetStationIndex(v->tile)) {
02009 v->LeaveStation();
02010 }
02011 }
02012
02013
02014 v->force_proceed = 0;
02015 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
02016
02017 if (_settings_game.vehicle.train_acceleration_model != TAM_ORIGINAL && v->cur_speed != 0) {
02018 ToggleBit(v->flags, VRF_REVERSING);
02019 } else {
02020 v->cur_speed = 0;
02021 SetLastSpeed(v, 0);
02022 HideFillingPercent(&v->fill_percent_te_id);
02023 ReverseTrainDirection(v);
02024 }
02025 }
02026 }
02027 return CommandCost();
02028 }
02029
02038 CommandCost CmdForceTrainProceed(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02039 {
02040 Train *t = Train::GetIfValid(p1);
02041 if (t == NULL || !CheckOwnership(t->owner)) return CMD_ERROR;
02042
02043 if (flags & DC_EXEC) {
02044
02045
02046
02047
02048
02049 t->force_proceed = t->force_proceed == 2 ? 0 : HasBit(t->flags, VRF_TRAIN_STUCK) || t->IsInDepot() ? 1 : 2;
02050 SetWindowDirty(WC_VEHICLE_VIEW, t->index);
02051 }
02052
02053 return CommandCost();
02054 }
02055
02067 CommandCost CmdRefitRailVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02068 {
02069 CargoID new_cid = GB(p2, 0, 8);
02070 byte new_subtype = GB(p2, 8, 8);
02071 bool only_this = HasBit(p2, 16);
02072
02073 Train *v = Train::GetIfValid(p1);
02074 if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;
02075
02076 if (!v->IsStoppedInDepot()) return_cmd_error(STR_TRAIN_MUST_BE_STOPPED);
02077 if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_CAN_T_REFIT_DESTROYED_VEHICLE);
02078
02079
02080 if (new_cid >= NUM_CARGO) return CMD_ERROR;
02081
02082 CommandCost cost = RefitVehicle(v, only_this, new_cid, new_subtype, flags);
02083
02084
02085 if (flags & DC_EXEC) {
02086 Train *front = v->First();
02087 TrainConsistChanged(front, false);
02088 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
02089 SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
02090 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
02091 } else {
02092 v->InvalidateNewGRFCacheOfChain();
02093 }
02094
02095 return cost;
02096 }
02097
02100 static FindDepotData FindClosestTrainDepot(Train *v, int max_distance)
02101 {
02102 assert(!(v->vehstatus & VS_CRASHED));
02103
02104 if (IsRailDepotTile(v->tile)) return FindDepotData(v->tile, 0);
02105
02106 PBSTileInfo origin = FollowTrainReservation(v);
02107 if (IsRailDepotTile(origin.tile)) return FindDepotData(origin.tile, 0);
02108
02109 switch (_settings_game.pf.pathfinder_for_trains) {
02110 case VPF_NPF: return NPFTrainFindNearestDepot(v, max_distance);
02111 case VPF_YAPF: return YapfTrainFindNearestDepot(v, max_distance);
02112
02113 default: NOT_REACHED();
02114 }
02115 }
02116
02117 bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse)
02118 {
02119 FindDepotData tfdd = FindClosestTrainDepot(this, 0);
02120 if (tfdd.best_length == UINT_MAX) return false;
02121
02122 if (location != NULL) *location = tfdd.tile;
02123 if (destination != NULL) *destination = GetDepotIndex(tfdd.tile);
02124 if (reverse != NULL) *reverse = tfdd.reverse;
02125
02126 return true;
02127 }
02128
02139 CommandCost CmdSendTrainToDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
02140 {
02141 if (p2 & DEPOT_MASS_SEND) {
02142
02143 if (!ValidVLWFlags(p2 & VLW_MASK)) return CMD_ERROR;
02144 return SendAllVehiclesToDepot(VEH_TRAIN, flags, p2 & DEPOT_SERVICE, _current_company, (p2 & VLW_MASK), p1);
02145 }
02146
02147 Train *v = Train::GetIfValid(p1);
02148 if (v == NULL) return CMD_ERROR;
02149
02150 return v->SendToDepot(flags, (DepotCommand)(p2 & DEPOT_COMMAND_MASK));
02151 }
02152
02153 static const int8 _vehicle_smoke_pos[8] = {
02154 1, 1, 1, 0, -1, -1, -1, 0
02155 };
02156
02157 static void HandleLocomotiveSmokeCloud(const Train *v)
02158 {
02159 bool sound = false;
02160
02161 if ((v->vehstatus & VS_TRAIN_SLOWING) || v->cur_speed < 2) {
02162 return;
02163 }
02164
02165 const Train *u = v;
02166
02167 do {
02168 const RailVehicleInfo *rvi = RailVehInfo(v->engine_type);
02169 int effect_offset = GB(v->tcache.cached_vis_effect, 0, 4) - 8;
02170 byte effect_type = GB(v->tcache.cached_vis_effect, 4, 2);
02171 bool disable_effect = HasBit(v->tcache.cached_vis_effect, 6);
02172
02173
02174 if ((rvi->railveh_type == RAILVEH_WAGON && effect_type == 0) ||
02175 disable_effect ||
02176 v->vehstatus & VS_HIDDEN) {
02177 continue;
02178 }
02179
02180
02181 if (IsRailDepotTile(v->tile) || IsTunnelTile(v->tile)) continue;
02182
02183
02184 if (!HasPowerOnRail(v->railtype, GetTileRailType(v->tile))) continue;
02185
02186 if (effect_type == 0) {
02187
02188 effect_type = rvi->engclass;
02189 } else {
02190 effect_type--;
02191 }
02192
02193 int x = _vehicle_smoke_pos[v->direction] * effect_offset;
02194 int y = _vehicle_smoke_pos[(v->direction + 2) % 8] * effect_offset;
02195
02196 if (HasBit(v->flags, VRF_REVERSE_DIRECTION)) {
02197 x = -x;
02198 y = -y;
02199 }
02200
02201 switch (effect_type) {
02202 case 0:
02203
02204 if (GB(v->tick_counter, 0, 4) == 0) {
02205 CreateEffectVehicleRel(v, x, y, 10, EV_STEAM_SMOKE);
02206 sound = true;
02207 }
02208 break;
02209
02210 case 1:
02211
02212 if (u->cur_speed <= 40 && Chance16(15, 128)) {
02213 CreateEffectVehicleRel(v, 0, 0, 10, EV_DIESEL_SMOKE);
02214 sound = true;
02215 }
02216 break;
02217
02218 case 2:
02219
02220 if (GB(v->tick_counter, 0, 2) == 0 && Chance16(1, 45)) {
02221 CreateEffectVehicleRel(v, 0, 0, 10, EV_ELECTRIC_SPARK);
02222 sound = true;
02223 }
02224 break;
02225
02226 default:
02227 break;
02228 }
02229 } while ((v = v->Next()) != NULL);
02230
02231 if (sound) PlayVehicleSound(u, VSE_TRAIN_EFFECT);
02232 }
02233
02234 void Train::PlayLeaveStationSound() const
02235 {
02236 static const SoundFx sfx[] = {
02237 SND_04_TRAIN,
02238 SND_0A_TRAIN_HORN,
02239 SND_0A_TRAIN_HORN,
02240 SND_47_MAGLEV_2,
02241 SND_41_MAGLEV
02242 };
02243
02244 if (PlayVehicleSound(this, VSE_START)) return;
02245
02246 EngineID engtype = this->engine_type;
02247 SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
02248 }
02249
02251 static void CheckNextTrainTile(Train *v)
02252 {
02253
02254 if (_settings_game.pf.path_backoff_interval == 255) return;
02255
02256
02257 if ((v->tile == v->dest_tile && v->current_order.IsType(OT_GOTO_DEPOT)) || v->track == TRACK_BIT_DEPOT) return;
02258
02259 if (IsRailStationTile(v->tile) && v->current_order.ShouldStopAtStation(v, GetStationIndex(v->tile))) return;
02260
02261 if ((v->current_order.IsType(OT_NOTHING) || v->current_order.IsType(OT_LEAVESTATION) || v->current_order.IsType(OT_LOADING)) && v->GetNumOrders() > 0) return;
02262
02263 Trackdir td = v->GetVehicleTrackdir();
02264
02265
02266 if (IsTileType(v->tile, MP_RAILWAY) && HasSignalOnTrackdir(v->tile, td) &&
02267 !IsPbsSignal(GetSignalType(v->tile, TrackdirToTrack(td))) &&
02268 GetSignalStateByTrackdir(v->tile, td) == SIGNAL_STATE_RED) return;
02269
02270 CFollowTrackRail ft(v);
02271 if (!ft.Follow(v->tile, td)) return;
02272
02273 if (!HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(ft.m_new_td_bits))) {
02274
02275 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02276 if (HasPbsSignalOnTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) {
02277
02278 TrackBits tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02279 if (_settings_game.pf.forbid_90_deg) {
02280 tracks &= ~TrackCrossesTracks(TrackdirToTrack(ft.m_old_td));
02281 }
02282 ChooseTrainTrack(v, ft.m_new_tile, ft.m_exitdir, tracks, false, NULL, false);
02283 }
02284 }
02285 }
02286 }
02287
02288 static bool CheckTrainStayInDepot(Train *v)
02289 {
02290
02291 for (const Train *u = v; u != NULL; u = u->Next()) {
02292 if (u->track != TRACK_BIT_DEPOT || u->tile != v->tile) return false;
02293 }
02294
02295
02296 if (v->tcache.cached_power == 0) {
02297 v->vehstatus |= VS_STOPPED;
02298 SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
02299 return true;
02300 }
02301
02302 SigSegState seg_state;
02303
02304 if (v->force_proceed == 0) {
02305
02306 if (++v->time_counter < 37) {
02307 SetWindowClassesDirty(WC_TRAINS_LIST);
02308 return true;
02309 }
02310
02311 v->time_counter = 0;
02312
02313 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02314 if (seg_state == SIGSEG_FULL || HasDepotReservation(v->tile)) {
02315
02316 SetWindowClassesDirty(WC_TRAINS_LIST);
02317 return true;
02318 }
02319 } else {
02320 seg_state = _settings_game.pf.reserve_paths ? SIGSEG_PBS : UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02321 }
02322
02323
02324 if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
02325
02326 if (HasDepotReservation(v->tile)) return true;
02327 SetDepotReservation(v->tile, true);
02328 VehicleEnterDepot(v);
02329 return true;
02330 }
02331
02332
02333 if (seg_state == SIGSEG_PBS && !TryPathReserve(v) && v->force_proceed == 0) {
02334
02335 SetWindowClassesDirty(WC_TRAINS_LIST);
02336 MarkTrainAsStuck(v);
02337 return true;
02338 }
02339
02340 SetDepotReservation(v->tile, true);
02341 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02342
02343 VehicleServiceInDepot(v);
02344 SetWindowClassesDirty(WC_TRAINS_LIST);
02345 v->PlayLeaveStationSound();
02346
02347 v->track = TRACK_BIT_X;
02348 if (v->direction & 2) v->track = TRACK_BIT_Y;
02349
02350 v->vehstatus &= ~VS_HIDDEN;
02351 v->cur_speed = 0;
02352
02353 v->UpdateDeltaXY(v->direction);
02354 v->cur_image = v->GetImage(v->direction);
02355 VehicleMove(v, false);
02356 UpdateSignalsOnSegment(v->tile, INVALID_DIAGDIR, v->owner);
02357 UpdateTrainAcceleration(v);
02358 InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
02359
02360 return false;
02361 }
02362
02364 static void ClearPathReservation(const Train *v, TileIndex tile, Trackdir track_dir)
02365 {
02366 DiagDirection dir = TrackdirToExitdir(track_dir);
02367
02368 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
02369
02370 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
02371 TileIndex end = GetOtherTunnelBridgeEnd(tile);
02372
02373 if (!HasVehicleOnTunnelBridge(tile, end, v)) {
02374
02375 SetTunnelBridgeReservation(tile, false);
02376 SetTunnelBridgeReservation(end, false);
02377
02378 if (_settings_client.gui.show_track_reservation) {
02379 MarkTileDirtyByTile(tile);
02380 MarkTileDirtyByTile(end);
02381 }
02382 }
02383 }
02384 } else if (IsRailStationTile(tile)) {
02385 TileIndex new_tile = TileAddByDiagDir(tile, dir);
02386
02387
02388 if (!IsCompatibleTrainStationTile(new_tile, tile)) {
02389 SetRailStationPlatformReservation(tile, ReverseDiagDir(dir), false);
02390 }
02391 } else {
02392
02393 UnreserveRailTrack(tile, TrackdirToTrack(track_dir));
02394 }
02395 }
02396
02398 void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_td)
02399 {
02400 assert(v->IsFrontEngine());
02401
02402 TileIndex tile = origin != INVALID_TILE ? origin : v->tile;
02403 Trackdir td = orig_td != INVALID_TRACKDIR ? orig_td : v->GetVehicleTrackdir();
02404 bool free_tile = tile != v->tile || !(IsRailStationTile(v->tile) || IsTileType(v->tile, MP_TUNNELBRIDGE));
02405 StationID station_id = IsRailStationTile(v->tile) ? GetStationIndex(v->tile) : INVALID_STATION;
02406
02407
02408 if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
02409
02410 CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
02411 while (ft.Follow(tile, td)) {
02412 tile = ft.m_new_tile;
02413 TrackdirBits bits = ft.m_new_td_bits & TrackBitsToTrackdirBits(GetReservedTrackbits(tile));
02414 td = RemoveFirstTrackdir(&bits);
02415 assert(bits == TRACKDIR_BIT_NONE);
02416
02417 if (!IsValidTrackdir(td)) break;
02418
02419 if (IsTileType(tile, MP_RAILWAY)) {
02420 if (HasSignalOnTrackdir(tile, td) && !IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)))) {
02421
02422 UnreserveRailTrack(tile, TrackdirToTrack(td));
02423 break;
02424 }
02425 if (HasPbsSignalOnTrackdir(tile, td)) {
02426 if (GetSignalStateByTrackdir(tile, td) == SIGNAL_STATE_RED) {
02427
02428 break;
02429 } else {
02430
02431 SetSignalStateByTrackdir(tile, td, SIGNAL_STATE_RED);
02432 MarkTileDirtyByTile(tile);
02433 }
02434 } else if (HasSignalOnTrackdir(tile, ReverseTrackdir(td)) && IsOnewaySignal(tile, TrackdirToTrack(td))) {
02435 break;
02436 }
02437 }
02438
02439
02440 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);
02441
02442 free_tile = true;
02443 }
02444 }
02445
02446 static const byte _initial_tile_subcoord[6][4][3] = {
02447 {{ 15, 8, 1 }, { 0, 0, 0 }, { 0, 8, 5 }, { 0, 0, 0 }},
02448 {{ 0, 0, 0 }, { 8, 0, 3 }, { 0, 0, 0 }, { 8, 15, 7 }},
02449 {{ 0, 0, 0 }, { 7, 0, 2 }, { 0, 7, 6 }, { 0, 0, 0 }},
02450 {{ 15, 8, 2 }, { 0, 0, 0 }, { 0, 0, 0 }, { 8, 15, 6 }},
02451 {{ 15, 7, 0 }, { 8, 0, 4 }, { 0, 0, 0 }, { 0, 0, 0 }},
02452 {{ 0, 0, 0 }, { 0, 0, 0 }, { 0, 8, 4 }, { 7, 15, 0 }},
02453 };
02454
02467 static Track DoTrainPathfind(const Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool do_track_reservation, PBSTileInfo *dest)
02468 {
02469 switch (_settings_game.pf.pathfinder_for_trains) {
02470 case VPF_NPF: return NPFTrainChooseTrack(v, tile, enterdir, tracks, path_not_found, do_track_reservation, dest);
02471 case VPF_YAPF: return YapfTrainChooseTrack(v, tile, enterdir, tracks, path_not_found, do_track_reservation, dest);
02472
02473 default: NOT_REACHED();
02474 }
02475 }
02476
02482 static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks, DiagDirection *enterdir)
02483 {
02484 PBSTileInfo origin = FollowTrainReservation(v);
02485
02486 CFollowTrackRail ft(v);
02487
02488 TileIndex tile = origin.tile;
02489 Trackdir cur_td = origin.trackdir;
02490 while (ft.Follow(tile, cur_td)) {
02491 if (KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE) {
02492
02493 if (HasOnewaySignalBlockingTrackdir(ft.m_new_tile, FindFirstTrackdir(ft.m_new_td_bits))) break;
02494 }
02495
02496 if (_settings_game.pf.forbid_90_deg) {
02497 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02498 if (ft.m_new_td_bits == TRACKDIR_BIT_NONE) break;
02499 }
02500
02501
02502 bool target_seen = ft.m_is_station || (IsTileType(ft.m_new_tile, MP_RAILWAY) && !IsPlainRail(ft.m_new_tile));
02503 if (target_seen || KillFirstBit(ft.m_new_td_bits) != TRACKDIR_BIT_NONE) {
02504
02505
02506
02507
02508
02509
02510 if (HasReservedTracks(ft.m_new_tile, TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(ft.m_old_td)))) break;
02511
02512
02513
02514 if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
02515
02516
02517 if (new_tracks) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
02518 if (enterdir) *enterdir = ft.m_exitdir;
02519 return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
02520 }
02521
02522 tile = ft.m_new_tile;
02523 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02524
02525 if (IsSafeWaitingPosition(v, tile, cur_td, true, _settings_game.pf.forbid_90_deg)) {
02526 bool wp_free = IsWaitingPositionFree(v, tile, cur_td, _settings_game.pf.forbid_90_deg);
02527 if (!(wp_free && TryReserveRailTrack(tile, TrackdirToTrack(cur_td)))) break;
02528
02529 return PBSTileInfo(tile, cur_td, true);
02530 }
02531
02532 if (!TryReserveRailTrack(tile, TrackdirToTrack(cur_td))) break;
02533 }
02534
02535 if (ft.m_err == CFollowTrackRail::EC_OWNER || ft.m_err == CFollowTrackRail::EC_NO_WAY) {
02536
02537 return PBSTileInfo(ft.m_old_tile, ft.m_old_td, true);
02538 }
02539
02540
02541 tile = origin.tile;
02542 cur_td = origin.trackdir;
02543 TileIndex stopped = ft.m_old_tile;
02544 Trackdir stopped_td = ft.m_old_td;
02545 while (tile != stopped || cur_td != stopped_td) {
02546 if (!ft.Follow(tile, cur_td)) break;
02547
02548 if (_settings_game.pf.forbid_90_deg) {
02549 ft.m_new_td_bits &= ~TrackdirCrossesTrackdirs(ft.m_old_td);
02550 assert(ft.m_new_td_bits != TRACKDIR_BIT_NONE);
02551 }
02552 assert(KillFirstBit(ft.m_new_td_bits) == TRACKDIR_BIT_NONE);
02553
02554 tile = ft.m_new_tile;
02555 cur_td = FindFirstTrackdir(ft.m_new_td_bits);
02556
02557 UnreserveRailTrack(tile, TrackdirToTrack(cur_td));
02558 }
02559
02560
02561 return PBSTileInfo();
02562 }
02563
02574 static bool TryReserveSafeTrack(const Train *v, TileIndex tile, Trackdir td, bool override_tailtype)
02575 {
02576 switch (_settings_game.pf.pathfinder_for_trains) {
02577 case VPF_NPF: return NPFTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02578 case VPF_YAPF: return YapfTrainFindNearestSafeTile(v, tile, td, override_tailtype);
02579
02580 default: NOT_REACHED();
02581 }
02582 }
02583
02585 class VehicleOrderSaver
02586 {
02587 private:
02588 Vehicle *v;
02589 Order old_order;
02590 TileIndex old_dest_tile;
02591 StationID old_last_station_visited;
02592 VehicleOrderID index;
02593
02594 public:
02595 VehicleOrderSaver(Vehicle *_v) :
02596 v(_v),
02597 old_order(_v->current_order),
02598 old_dest_tile(_v->dest_tile),
02599 old_last_station_visited(_v->last_station_visited),
02600 index(_v->cur_order_index)
02601 {
02602 }
02603
02604 ~VehicleOrderSaver()
02605 {
02606 this->v->current_order = this->old_order;
02607 this->v->dest_tile = this->old_dest_tile;
02608 this->v->last_station_visited = this->old_last_station_visited;
02609 }
02610
02616 bool SwitchToNextOrder(bool skip_first)
02617 {
02618 if (this->v->GetNumOrders() == 0) return false;
02619
02620 if (skip_first) ++this->index;
02621
02622 int conditional_depth = 0;
02623
02624 do {
02625
02626 if (this->index >= this->v->GetNumOrders()) this->index = 0;
02627
02628 Order *order = this->v->GetOrder(this->index);
02629 assert(order != NULL);
02630
02631 switch (order->GetType()) {
02632 case OT_GOTO_DEPOT:
02633
02634 if ((order->GetDepotOrderType() & ODTFB_SERVICE) && !this->v->NeedsServicing()) break;
02635 case OT_GOTO_STATION:
02636 case OT_GOTO_WAYPOINT:
02637 this->v->current_order = *order;
02638 UpdateOrderDest(this->v, order);
02639 return true;
02640 case OT_CONDITIONAL: {
02641 if (conditional_depth > this->v->GetNumOrders()) return false;
02642 VehicleOrderID next = ProcessConditionalOrder(order, this->v);
02643 if (next != INVALID_VEH_ORDER_ID) {
02644 conditional_depth++;
02645 this->index = next;
02646
02647 continue;
02648 }
02649 break;
02650 }
02651 default:
02652 break;
02653 }
02654
02655
02656 ++this->index;
02657 } while (this->index != this->v->cur_order_index);
02658
02659 return false;
02660 }
02661 };
02662
02663
02664 static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool force_res, bool *got_reservation, bool mark_stuck)
02665 {
02666 Track best_track = INVALID_TRACK;
02667 bool do_track_reservation = _settings_game.pf.reserve_paths || force_res;
02668 bool changed_signal = false;
02669
02670 assert((tracks & ~TRACK_BIT_MASK) == 0);
02671
02672 if (got_reservation != NULL) *got_reservation = false;
02673
02674
02675 TrackBits res_tracks = (TrackBits)(GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir));
02676
02677 if (res_tracks != TRACK_BIT_NONE) return FindFirstTrack(res_tracks);
02678
02679
02680 if (KillFirstBit(tracks) == TRACK_BIT_NONE) {
02681 Track track = FindFirstTrack(tracks);
02682
02683 if (track != INVALID_TRACK && HasPbsSignalOnTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir))) {
02684 do_track_reservation = true;
02685 changed_signal = true;
02686 SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(track, enterdir), SIGNAL_STATE_GREEN);
02687 } else if (!do_track_reservation) {
02688 return track;
02689 }
02690 best_track = track;
02691 }
02692
02693 PBSTileInfo res_dest(tile, INVALID_TRACKDIR, false);
02694 DiagDirection dest_enterdir = enterdir;
02695 if (do_track_reservation) {
02696
02697
02698
02699 CheckIfTrainNeedsService(v);
02700 if (v->current_order.IsType(OT_DUMMY) || v->current_order.IsType(OT_CONDITIONAL) || v->current_order.IsType(OT_GOTO_DEPOT)) ProcessOrders(v);
02701
02702 res_dest = ExtendTrainReservation(v, &tracks, &dest_enterdir);
02703 if (res_dest.tile == INVALID_TILE) {
02704
02705 if (mark_stuck) MarkTrainAsStuck(v);
02706 if (changed_signal) SetSignalStateByTrackdir(tile, TrackEnterdirToTrackdir(best_track, enterdir), SIGNAL_STATE_RED);
02707 return FindFirstTrack(tracks);
02708 }
02709 }
02710
02711
02712 VehicleOrderSaver orders(v);
02713
02714
02715
02716
02717
02718
02719
02720 if (v->current_order.IsType(OT_LEAVESTATION)) {
02721 orders.SwitchToNextOrder(false);
02722 } else if (v->current_order.IsType(OT_LOADING) || (!v->current_order.IsType(OT_GOTO_DEPOT) && (
02723 v->current_order.IsType(OT_GOTO_STATION) ?
02724 IsRailStationTile(v->tile) && v->current_order.GetDestination() == GetStationIndex(v->tile) :
02725 v->tile == v->dest_tile))) {
02726 orders.SwitchToNextOrder(true);
02727 }
02728
02729 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02730
02731 bool path_not_found = false;
02732 TileIndex new_tile = res_dest.tile;
02733
02734 Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, &path_not_found, do_track_reservation, &res_dest);
02735 if (new_tile == tile) best_track = next_track;
02736
02737
02738 if (path_not_found) {
02739
02740 if (!HasBit(v->flags, VRF_NO_PATH_TO_DESTINATION)) {
02741
02742 SetBit(v->flags, VRF_NO_PATH_TO_DESTINATION);
02743
02744 AI::NewEvent(v->owner, new AIEventVehicleLost(v->index));
02745 if (_settings_client.gui.lost_train_warn && v->owner == _local_company) {
02746 SetDParam(0, v->index);
02747 AddVehicleNewsItem(
02748 STR_NEWS_TRAIN_IS_LOST,
02749 NS_ADVICE,
02750 v->index
02751 );
02752 }
02753 }
02754 } else {
02755
02756 if (HasBit(v->flags, VRF_NO_PATH_TO_DESTINATION)) {
02757
02758 ClrBit(v->flags, VRF_NO_PATH_TO_DESTINATION);
02759
02760 }
02761 }
02762 }
02763
02764
02765 if (!do_track_reservation) return best_track;
02766
02767
02768 if (res_dest.tile != INVALID_TILE && !res_dest.okay) {
02769 if (mark_stuck) MarkTrainAsStuck(v);
02770 FreeTrainTrackReservation(v);
02771 return best_track;
02772 }
02773
02774
02775 if (res_dest.tile == INVALID_TILE) {
02776
02777 PBSTileInfo origin = FollowTrainReservation(v);
02778 if (TryReserveSafeTrack(v, origin.tile, origin.trackdir, false)) {
02779 TrackBits res = GetReservedTrackbits(tile) & DiagdirReachesTracks(enterdir);
02780 best_track = FindFirstTrack(res);
02781 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02782 if (got_reservation != NULL) *got_reservation = true;
02783 if (changed_signal) MarkTileDirtyByTile(tile);
02784 } else {
02785 FreeTrainTrackReservation(v);
02786 if (mark_stuck) MarkTrainAsStuck(v);
02787 }
02788 return best_track;
02789 }
02790
02791 if (got_reservation != NULL) *got_reservation = true;
02792
02793
02794 while (!IsSafeWaitingPosition(v, res_dest.tile, res_dest.trackdir, true, _settings_game.pf.forbid_90_deg)) {
02795
02796 DiagDirection exitdir = TrackdirToExitdir(res_dest.trackdir);
02797 TileIndex next_tile = TileAddByDiagDir(res_dest.tile, exitdir);
02798 TrackBits reachable = TrackdirBitsToTrackBits((TrackdirBits)(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0))) & DiagdirReachesTracks(exitdir);
02799 if (_settings_game.pf.forbid_90_deg) {
02800 reachable &= ~TrackCrossesTracks(TrackdirToTrack(res_dest.trackdir));
02801 }
02802
02803
02804 if (orders.SwitchToNextOrder(true)) {
02805 PBSTileInfo cur_dest;
02806 DoTrainPathfind(v, next_tile, exitdir, reachable, NULL, true, &cur_dest);
02807 if (cur_dest.tile != INVALID_TILE) {
02808 res_dest = cur_dest;
02809 if (res_dest.okay) continue;
02810
02811 FreeTrainTrackReservation(v);
02812 if (mark_stuck) MarkTrainAsStuck(v);
02813 if (got_reservation != NULL) *got_reservation = false;
02814 changed_signal = false;
02815 break;
02816 }
02817 }
02818
02819 if (!TryReserveSafeTrack(v, res_dest.tile, res_dest.trackdir, true)) {
02820 FreeTrainTrackReservation(v);
02821 if (mark_stuck) MarkTrainAsStuck(v);
02822 if (got_reservation != NULL) *got_reservation = false;
02823 changed_signal = false;
02824 }
02825 break;
02826 }
02827
02828 TryReserveRailTrack(v->tile, TrackdirToTrack(v->GetVehicleTrackdir()));
02829
02830 if (changed_signal) MarkTileDirtyByTile(tile);
02831
02832 return best_track;
02833 }
02834
02843 bool TryPathReserve(Train *v, bool mark_as_stuck, bool first_tile_okay)
02844 {
02845 assert(v->IsFrontEngine());
02846
02847
02848
02849
02850 if (v->track == TRACK_BIT_DEPOT) {
02851 if (HasDepotReservation(v->tile)) {
02852 if (mark_as_stuck) MarkTrainAsStuck(v);
02853 return false;
02854 } else {
02855
02856 TileIndex next_tile = TileAddByDiagDir(v->tile, GetRailDepotDirection(v->tile));
02857 if (HasReservedTracks(next_tile, DiagdirReachesTracks(GetRailDepotDirection(v->tile)))) return false;
02858 }
02859 }
02860
02861
02862 DiagDirection dir = TrainExitDir(v->direction, v->track);
02863 TileIndex next_tile = TileAddByDiagDir(v->tile, dir);
02864 if (IsTileType(next_tile, MP_RAILWAY) && HasReservedTracks(next_tile, DiagdirReachesTracks(dir))) {
02865
02866 Trackdir td = FindFirstTrackdir(TrackBitsToTrackdirBits(GetReservedTrackbits(next_tile)) & DiagdirReachesTrackdirs(dir));
02867 if (HasSignalOnTrackdir(next_tile, td) && HasSignalOnTrackdir(next_tile, ReverseTrackdir(td)) &&
02868 !IsPbsSignal(GetSignalType(next_tile, TrackdirToTrack(td)))) {
02869
02870 if (mark_as_stuck) MarkTrainAsStuck(v);
02871 return false;
02872 }
02873 }
02874
02875 bool other_train = false;
02876 PBSTileInfo origin = FollowTrainReservation(v, &other_train);
02877
02878
02879
02880
02881
02882 if (other_train && v->tile != origin.tile) {
02883 if (mark_as_stuck) MarkTrainAsStuck(v);
02884 return false;
02885 }
02886
02887 if (origin.okay && (v->tile != origin.tile || first_tile_okay)) {
02888
02889 if (HasBit(v->flags, VRF_TRAIN_STUCK)) SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02890 ClrBit(v->flags, VRF_TRAIN_STUCK);
02891 return true;
02892 }
02893
02894
02895 if (v->track == TRACK_BIT_DEPOT) {
02896 SetDepotReservation(v->tile, true);
02897 if (_settings_client.gui.show_track_reservation) MarkTileDirtyByTile(v->tile);
02898 }
02899
02900 DiagDirection exitdir = TrackdirToExitdir(origin.trackdir);
02901 TileIndex new_tile = TileAddByDiagDir(origin.tile, exitdir);
02902 TrackBits reachable = TrackdirBitsToTrackBits(TrackStatusToTrackdirBits(GetTileTrackStatus(new_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTrackdirs(exitdir));
02903
02904 if (_settings_game.pf.forbid_90_deg) reachable &= ~TrackCrossesTracks(TrackdirToTrack(origin.trackdir));
02905
02906 bool res_made = false;
02907 ChooseTrainTrack(v, new_tile, exitdir, reachable, true, &res_made, mark_as_stuck);
02908
02909 if (!res_made) {
02910
02911 if (v->track == TRACK_BIT_DEPOT) SetDepotReservation(v->tile, false);
02912 return false;
02913 }
02914
02915 if (HasBit(v->flags, VRF_TRAIN_STUCK)) {
02916 v->time_counter = 0;
02917 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
02918 }
02919 ClrBit(v->flags, VRF_TRAIN_STUCK);
02920 return true;
02921 }
02922
02923
02924 static bool CheckReverseTrain(const Train *v)
02925 {
02926 if (_settings_game.difficulty.line_reverse_mode != 0 ||
02927 v->track == TRACK_BIT_DEPOT || v->track == TRACK_BIT_WORMHOLE ||
02928 !(v->direction & 1)) {
02929 return false;
02930 }
02931
02932 assert(v->track != TRACK_BIT_NONE);
02933
02934 switch (_settings_game.pf.pathfinder_for_trains) {
02935 case VPF_NPF: return NPFTrainCheckReverse(v);
02936 case VPF_YAPF: return YapfTrainCheckReverse(v);
02937
02938 default: NOT_REACHED();
02939 }
02940 }
02941
02942 TileIndex Train::GetOrderStationLocation(StationID station)
02943 {
02944 if (station == this->last_station_visited) this->last_station_visited = INVALID_STATION;
02945
02946 const Station *st = Station::Get(station);
02947 if (!(st->facilities & FACIL_TRAIN)) {
02948
02949 this->IncrementOrderIndex();
02950 return 0;
02951 }
02952
02953 return st->xy;
02954 }
02955
02956 void Train::MarkDirty()
02957 {
02958 Vehicle *v = this;
02959 do {
02960 v->UpdateViewport(false, false);
02961 } while ((v = v->Next()) != NULL);
02962
02963
02964 TrainCargoChanged(this);
02965 UpdateTrainAcceleration(this);
02966 }
02967
02978 static int UpdateTrainSpeed(Train *v)
02979 {
02980 uint accel;
02981
02982 if ((v->vehstatus & VS_STOPPED) || HasBit(v->flags, VRF_REVERSING) || HasBit(v->flags, VRF_TRAIN_STUCK)) {
02983 switch (_settings_game.vehicle.train_acceleration_model) {
02984 default: NOT_REACHED();
02985 case TAM_ORIGINAL: accel = v->acceleration * -4; break;
02986 case TAM_REALISTIC: accel = GetTrainAcceleration(v, AM_BRAKE); break;
02987 }
02988 } else {
02989 switch (_settings_game.vehicle.train_acceleration_model) {
02990 default: NOT_REACHED();
02991 case TAM_ORIGINAL: accel = v->acceleration * 2; break;
02992 case TAM_REALISTIC: accel = GetTrainAcceleration(v, AM_ACCEL); break;
02993 }
02994 }
02995
02996 uint spd = v->subspeed + accel;
02997 v->subspeed = (byte)spd;
02998 {
02999 int tempmax = v->max_speed;
03000 if (v->cur_speed > v->max_speed)
03001 tempmax = v->cur_speed - (v->cur_speed / 10) - 1;
03002 v->cur_speed = spd = Clamp(v->cur_speed + ((int)spd >> 8), 0, tempmax);
03003 }
03004
03005
03006
03007
03008
03009
03010
03011
03012
03013
03014
03015
03016 int scaled_spd = spd * 3 >> 2;
03017
03018 scaled_spd += v->progress;
03019 v->progress = 0;
03020 return scaled_spd;
03021 }
03022
03023 static void TrainEnterStation(Train *v, StationID station)
03024 {
03025 v->last_station_visited = station;
03026
03027
03028 Station *st = Station::Get(station);
03029 if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
03030 st->had_vehicle_of_type |= HVOT_TRAIN;
03031 SetDParam(0, st->index);
03032 AddVehicleNewsItem(
03033 STR_NEWS_FIRST_TRAIN_ARRIVAL,
03034 v->owner == _local_company ? NS_ARRIVAL_COMPANY : NS_ARRIVAL_OTHER,
03035 v->index,
03036 st->index
03037 );
03038 AI::NewEvent(v->owner, new AIEventStationFirstVehicle(st->index, v->index));
03039 }
03040
03041 v->BeginLoading();
03042
03043 StationAnimationTrigger(st, v->tile, STAT_ANIM_TRAIN_ARRIVES);
03044 }
03045
03046 static byte AfterSetTrainPos(Train *v, bool new_tile)
03047 {
03048 byte old_z = v->z_pos;
03049 v->z_pos = GetSlopeZ(v->x_pos, v->y_pos);
03050
03051 if (new_tile) {
03052 ClrBit(v->flags, VRF_GOINGUP);
03053 ClrBit(v->flags, VRF_GOINGDOWN);
03054
03055 if (v->track == TRACK_BIT_X || v->track == TRACK_BIT_Y) {
03056
03057
03058
03059
03060
03061 static const int HALF_TILE_SIZE = TILE_SIZE / 2;
03062 static const int INV_TILE_SIZE_MASK = ~(TILE_SIZE - 1);
03063
03064 byte middle_z = GetSlopeZ((v->x_pos & INV_TILE_SIZE_MASK) | HALF_TILE_SIZE, (v->y_pos & INV_TILE_SIZE_MASK) | HALF_TILE_SIZE);
03065
03066 if (middle_z != v->z_pos) {
03067 SetBit(v->flags, (middle_z > old_z) ? VRF_GOINGUP : VRF_GOINGDOWN);
03068 }
03069 }
03070 }
03071
03072 VehicleMove(v, true);
03073 return old_z;
03074 }
03075
03076
03077 static inline bool CheckCompatibleRail(const Train *v, TileIndex tile)
03078 {
03079 return
03080 IsTileOwner(tile, v->owner) && (
03081 !v->IsFrontEngine() ||
03082 HasBit(v->compatible_railtypes, GetRailType(tile))
03083 );
03084 }
03085
03086 struct RailtypeSlowdownParams {
03087 byte small_turn, large_turn;
03088 byte z_up;
03089 byte z_down;
03090 };
03091
03092 static const RailtypeSlowdownParams _railtype_slowdown[] = {
03093
03094 {256 / 4, 256 / 2, 256 / 4, 2},
03095 {256 / 4, 256 / 2, 256 / 4, 2},
03096 {256 / 4, 256 / 2, 256 / 4, 2},
03097 {0, 256 / 2, 256 / 4, 2},
03098 };
03099
03101 static inline void AffectSpeedByZChange(Train *v, byte old_z)
03102 {
03103 if (old_z == v->z_pos || _settings_game.vehicle.train_acceleration_model != TAM_ORIGINAL) return;
03104
03105 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03106
03107 if (old_z < v->z_pos) {
03108 v->cur_speed -= (v->cur_speed * rsp->z_up >> 8);
03109 } else {
03110 uint16 spd = v->cur_speed + rsp->z_down;
03111 if (spd <= v->max_speed) v->cur_speed = spd;
03112 }
03113 }
03114
03115 static bool TrainMovedChangeSignals(TileIndex tile, DiagDirection dir)
03116 {
03117 if (IsTileType(tile, MP_RAILWAY) &&
03118 GetRailTileType(tile) == RAIL_TILE_SIGNALS) {
03119 TrackdirBits tracks = TrackBitsToTrackdirBits(GetTrackBits(tile)) & DiagdirReachesTrackdirs(dir);
03120 Trackdir trackdir = FindFirstTrackdir(tracks);
03121 if (UpdateSignalsOnSegment(tile, TrackdirToExitdir(trackdir), GetTileOwner(tile)) == SIGSEG_PBS && HasSignalOnTrackdir(tile, trackdir)) {
03122
03123 if (!IsPbsSignal(GetSignalType(tile, TrackdirToTrack(trackdir)))) return true;
03124 }
03125 }
03126 return false;
03127 }
03128
03132 void Train::ReserveTrackUnderConsist() const
03133 {
03134 for (const Train *u = this; u != NULL; u = u->Next()) {
03135 switch (u->track) {
03136 case TRACK_BIT_WORMHOLE:
03137 TryReserveRailTrack(u->tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(u->tile)));
03138 break;
03139 case TRACK_BIT_DEPOT:
03140 break;
03141 default:
03142 TryReserveRailTrack(u->tile, TrackBitsToTrack(u->track));
03143 break;
03144 }
03145 }
03146 }
03147
03148 uint Train::Crash(bool flooded)
03149 {
03150 uint pass = 0;
03151 if (this->IsFrontEngine()) {
03152 pass += 4;
03153
03154
03155
03156 if (!HasBit(this->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(this);
03157 for (const Train *v = this; v != NULL; v = v->Next()) {
03158 ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03159 if (IsTileType(v->tile, MP_TUNNELBRIDGE)) {
03160
03161
03162 SetTunnelBridgeReservation(GetOtherTunnelBridgeEnd(v->tile), false);
03163 }
03164 }
03165
03166
03167
03168 TileIndex crossing = TrainApproachingCrossingTile(this);
03169 if (crossing != INVALID_TILE) UpdateLevelCrossing(crossing);
03170 }
03171
03172 pass += Vehicle::Crash(flooded);
03173
03174 this->crash_anim_pos = flooded ? 4000 : 1;
03175 return pass;
03176 }
03177
03184 static uint TrainCrashed(Train *v)
03185 {
03186 uint num = 0;
03187
03188
03189 if (!(v->vehstatus & VS_CRASHED)) {
03190 num = v->Crash();
03191 AI::NewEvent(v->owner, new AIEventVehicleCrashed(v->index, v->tile, AIEventVehicleCrashed::CRASH_TRAIN));
03192 }
03193
03194
03195
03196 v->ReserveTrackUnderConsist();
03197
03198 return num;
03199 }
03200
03201 struct TrainCollideChecker {
03202 Train *v;
03203 uint num;
03204 };
03205
03206 static Vehicle *FindTrainCollideEnum(Vehicle *v, void *data)
03207 {
03208 TrainCollideChecker *tcc = (TrainCollideChecker*)data;
03209
03210
03211 if (v->type != VEH_TRAIN || Train::From(v)->track == TRACK_BIT_DEPOT) return NULL;
03212
03213
03214 Train *coll = Train::From(v)->First();
03215
03216
03217 if (coll == tcc->v) return NULL;
03218
03219 int x_diff = v->x_pos - tcc->v->x_pos;
03220 int y_diff = v->y_pos - tcc->v->y_pos;
03221
03222
03223
03224
03225
03226 uint hash = (y_diff + 7) | (x_diff + 7);
03227 if (hash & ~15) return NULL;
03228
03229
03230 if (x_diff * x_diff + y_diff * y_diff > 25) return NULL;
03231
03232
03233 if (abs(v->z_pos - tcc->v->z_pos) > 5) return NULL;
03234
03235
03236 tcc->num += TrainCrashed(tcc->v);
03237 tcc->num += TrainCrashed(coll);
03238
03239 return NULL;
03240 }
03241
03248 static bool CheckTrainCollision(Train *v)
03249 {
03250
03251 if (v->track == TRACK_BIT_DEPOT) return false;
03252
03253 assert(v->track == TRACK_BIT_WORMHOLE || TileVirtXY(v->x_pos, v->y_pos) == v->tile);
03254
03255 TrainCollideChecker tcc;
03256 tcc.v = v;
03257 tcc.num = 0;
03258
03259
03260 if (v->track == TRACK_BIT_WORMHOLE) {
03261 FindVehicleOnPos(v->tile, &tcc, FindTrainCollideEnum);
03262 FindVehicleOnPos(GetOtherTunnelBridgeEnd(v->tile), &tcc, FindTrainCollideEnum);
03263 } else {
03264 FindVehicleOnPosXY(v->x_pos, v->y_pos, &tcc, FindTrainCollideEnum);
03265 }
03266
03267
03268 if (tcc.num == 0) return false;
03269
03270 SetDParam(0, tcc.num);
03271 AddVehicleNewsItem(STR_NEWS_TRAIN_CRASH,
03272 NS_ACCIDENT,
03273 v->index
03274 );
03275
03276 ModifyStationRatingAround(v->tile, v->owner, -160, 30);
03277 SndPlayVehicleFx(SND_13_BIG_CRASH, v);
03278 return true;
03279 }
03280
03281 static Vehicle *CheckTrainAtSignal(Vehicle *v, void *data)
03282 {
03283 if (v->type != VEH_TRAIN || (v->vehstatus & VS_CRASHED)) return NULL;
03284
03285 Train *t = Train::From(v);
03286 DiagDirection exitdir = *(DiagDirection *)data;
03287
03288
03289 if (!t->IsFrontEngine() || !(t->track & TRACK_BIT_MASK)) return NULL;
03290
03291 if (t->cur_speed > 5 || TrainExitDir(t->direction, t->track) != exitdir) return NULL;
03292
03293 return t;
03294 }
03295
03296 static void TrainController(Train *v, Vehicle *nomove)
03297 {
03298 Train *first = v->First();
03299 Train *prev;
03300 bool direction_changed = false;
03301
03302
03303 for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
03304 DiagDirection enterdir = DIAGDIR_BEGIN;
03305 bool update_signals_crossing = false;
03306
03307 GetNewVehiclePosResult gp = GetNewVehiclePos(v);
03308 if (v->track != TRACK_BIT_WORMHOLE) {
03309
03310 if (gp.old_tile == gp.new_tile) {
03311
03312 if (v->track == TRACK_BIT_DEPOT) {
03313
03314 gp.x = v->x_pos;
03315 gp.y = v->y_pos;
03316 } else {
03317
03318
03319
03320 if (v->IsFrontEngine() && !TrainCheckIfLineEnds(v)) return;
03321
03322 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03323 if (HasBit(r, VETS_CANNOT_ENTER)) {
03324 goto invalid_rail;
03325 }
03326 if (HasBit(r, VETS_ENTERED_STATION)) {
03327
03328 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03329 }
03330 }
03331 } else {
03332
03333
03334
03335 enterdir = DiagdirBetweenTiles(gp.old_tile, gp.new_tile);
03336 assert(IsValidDiagDirection(enterdir));
03337
03338
03339
03340 TrackStatus ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL, 0, ReverseDiagDir(enterdir));
03341 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(enterdir);
03342
03343 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03344 TrackBits red_signals = TrackdirBitsToTrackBits(TrackStatusToRedSignals(ts) & reachable_trackdirs);
03345
03346 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03347 if (_settings_game.pf.forbid_90_deg && prev == NULL) {
03348
03349
03350 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03351 }
03352
03353 if (bits == TRACK_BIT_NONE) goto invalid_rail;
03354
03355
03356
03357 if (!CheckCompatibleRail(v, gp.new_tile)) goto invalid_rail;
03358
03359 TrackBits chosen_track;
03360 if (prev == NULL) {
03361
03362
03363 chosen_track = TrackToTrackBits(ChooseTrainTrack(v, gp.new_tile, enterdir, bits, false, NULL, true));
03364 assert(chosen_track & (bits | GetReservedTrackbits(gp.new_tile)));
03365
03366 if (v->force_proceed != 0 && IsPlainRailTile(gp.new_tile) && HasSignals(gp.new_tile)) {
03367
03368
03369
03370
03371 Trackdir dir = FindFirstTrackdir(trackdirbits);
03372 if (GetSignalType(gp.new_tile, TrackdirToTrack(dir)) != SIGTYPE_PBS ||
03373 !HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(dir))) {
03374
03375
03376 v->force_proceed--;
03377 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03378 }
03379 }
03380
03381
03382 if ((red_signals & chosen_track) && v->force_proceed == 0) {
03383
03384 Trackdir i = FindFirstTrackdir(trackdirbits);
03385
03386
03387 if (HasBit(v->flags, VRF_TRAIN_STUCK)) return;
03388
03389 if (!HasSignalOnTrackdir(gp.new_tile, ReverseTrackdir(i))) {
03390 v->cur_speed = 0;
03391 v->subspeed = 0;
03392 v->progress = 255 - 100;
03393 if (_settings_game.pf.wait_oneway_signal == 255 || ++v->time_counter < _settings_game.pf.wait_oneway_signal * 20) return;
03394 } else if (HasSignalOnTrackdir(gp.new_tile, i)) {
03395 v->cur_speed = 0;
03396 v->subspeed = 0;
03397 v->progress = 255 - 10;
03398 if (_settings_game.pf.wait_twoway_signal == 255 || ++v->time_counter < _settings_game.pf.wait_twoway_signal * 73) {
03399 DiagDirection exitdir = TrackdirToExitdir(i);
03400 TileIndex o_tile = TileAddByDiagDir(gp.new_tile, exitdir);
03401
03402 exitdir = ReverseDiagDir(exitdir);
03403
03404
03405 if (!HasVehicleOnPos(o_tile, &exitdir, &CheckTrainAtSignal)) return;
03406 }
03407 }
03408
03409
03410
03411 if (_settings_game.pf.wait_for_pbs_path == 255 && UpdateSignalsOnSegment(v->tile, enterdir, v->owner) == SIGSEG_PBS) {
03412 v->time_counter = 0;
03413 return;
03414 }
03415 goto reverse_train_direction;
03416 } else {
03417 TryReserveRailTrack(gp.new_tile, TrackBitsToTrack(chosen_track));
03418 }
03419 } else {
03420
03421 if (prev->tile == gp.new_tile) {
03422
03423 if (prev->track == TRACK_BIT_WORMHOLE) {
03424
03425
03426 assert(IsTunnel(prev->tile));
03427 chosen_track = bits;
03428 } else {
03429 chosen_track = prev->track;
03430 }
03431 } else {
03432
03433
03434
03435
03436
03437
03438
03439 static const TrackBits _connecting_track[DIAGDIR_END][DIAGDIR_END] = {
03440 {TRACK_BIT_X, TRACK_BIT_LOWER, TRACK_BIT_NONE, TRACK_BIT_LEFT },
03441 {TRACK_BIT_UPPER, TRACK_BIT_Y, TRACK_BIT_LEFT, TRACK_BIT_NONE },
03442 {TRACK_BIT_NONE, TRACK_BIT_RIGHT, TRACK_BIT_X, TRACK_BIT_UPPER},
03443 {TRACK_BIT_RIGHT, TRACK_BIT_NONE, TRACK_BIT_LOWER, TRACK_BIT_Y }
03444 };
03445 DiagDirection exitdir = DiagdirBetweenTiles(gp.new_tile, prev->tile);
03446 assert(IsValidDiagDirection(exitdir));
03447 chosen_track = _connecting_track[enterdir][exitdir];
03448 }
03449 chosen_track &= bits;
03450 }
03451
03452
03453 assert(
03454 chosen_track == TRACK_BIT_X || chosen_track == TRACK_BIT_Y ||
03455 chosen_track == TRACK_BIT_UPPER || chosen_track == TRACK_BIT_LOWER ||
03456 chosen_track == TRACK_BIT_LEFT || chosen_track == TRACK_BIT_RIGHT);
03457
03458
03459 const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
03460 gp.x = (gp.x & ~0xF) | b[0];
03461 gp.y = (gp.y & ~0xF) | b[1];
03462 Direction chosen_dir = (Direction)b[2];
03463
03464
03465 uint32 r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
03466 if (HasBit(r, VETS_CANNOT_ENTER)) {
03467 goto invalid_rail;
03468 }
03469
03470 if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
03471 Track track = FindFirstTrack(chosen_track);
03472 Trackdir tdir = TrackDirectionToTrackdir(track, chosen_dir);
03473 if (v->IsFrontEngine() && HasPbsSignalOnTrackdir(gp.new_tile, tdir)) {
03474 SetSignalStateByTrackdir(gp.new_tile, tdir, SIGNAL_STATE_RED);
03475 MarkTileDirtyByTile(gp.new_tile);
03476 }
03477
03478
03479 if (v->Next() == NULL) ClearPathReservation(v, v->tile, v->GetVehicleTrackdir());
03480
03481 v->tile = gp.new_tile;
03482
03483 if (GetTileRailType(gp.new_tile) != GetTileRailType(gp.old_tile)) {
03484 TrainPowerChanged(v->First());
03485 }
03486
03487 v->track = chosen_track;
03488 assert(v->track);
03489 }
03490
03491
03492
03493 update_signals_crossing = true;
03494
03495 if (chosen_dir != v->direction) {
03496 if (prev == NULL && _settings_game.vehicle.train_acceleration_model == TAM_ORIGINAL) {
03497 const RailtypeSlowdownParams *rsp = &_railtype_slowdown[v->railtype];
03498 DirDiff diff = DirDifference(v->direction, chosen_dir);
03499 v->cur_speed -= (diff == DIRDIFF_45RIGHT || diff == DIRDIFF_45LEFT ? rsp->small_turn : rsp->large_turn) * v->cur_speed >> 8;
03500 }
03501 direction_changed = true;
03502 v->direction = chosen_dir;
03503 }
03504
03505 if (v->IsFrontEngine()) {
03506 v->time_counter = 0;
03507
03508
03509 TileIndex crossing = TrainApproachingCrossingTile(v);
03510 if (crossing != INVALID_TILE && HasCrossingReservation(crossing)) SndPlayTileFx(SND_0E_LEVEL_CROSSING, crossing);
03511
03512
03513 CheckNextTrainTile(v);
03514 }
03515
03516 if (HasBit(r, VETS_ENTERED_STATION)) {
03517
03518 TrainEnterStation(v, r >> VETS_STATION_ID_OFFSET);
03519 }
03520 }
03521 } else {
03522
03523
03524
03525 if (!(v->vehstatus & VS_HIDDEN)) {
03526 v->cur_speed =
03527 min(v->cur_speed, GetBridgeSpec(GetBridgeType(v->tile))->speed);
03528 }
03529
03530 if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) && HasBit(VehicleEnterTile(v, gp.new_tile, gp.x, gp.y), VETS_ENTERED_WORMHOLE)) {
03531
03532 if (v->IsFrontEngine()) {
03533 TryReserveRailTrack(gp.new_tile, DiagDirToDiagTrack(GetTunnelBridgeDirection(gp.new_tile)));
03534 CheckNextTrainTile(v);
03535 }
03536 } else {
03537 v->x_pos = gp.x;
03538 v->y_pos = gp.y;
03539 VehicleMove(v, !(v->vehstatus & VS_HIDDEN));
03540 continue;
03541 }
03542 }
03543
03544
03545 v->UpdateDeltaXY(v->direction);
03546
03547 v->x_pos = gp.x;
03548 v->y_pos = gp.y;
03549
03550
03551 byte old_z = AfterSetTrainPos(v, (gp.new_tile != gp.old_tile));
03552
03553 if (prev == NULL) {
03554
03555 AffectSpeedByZChange(v, old_z);
03556 }
03557
03558 if (update_signals_crossing) {
03559 if (v->IsFrontEngine()) {
03560 if (TrainMovedChangeSignals(gp.new_tile, enterdir)) {
03561
03562
03563
03564
03565
03566
03567
03568
03569 if ((!HasReservedTracks(gp.new_tile, v->track) &&
03570 !TryReserveRailTrack(gp.new_tile, FindFirstTrack(v->track))) ||
03571 !TryPathReserve(v)) {
03572 MarkTrainAsStuck(v);
03573 }
03574 }
03575 }
03576
03577
03578
03579 if (v->Next() == NULL) {
03580 TrainMovedChangeSignals(gp.old_tile, ReverseDiagDir(enterdir));
03581 if (IsLevelCrossingTile(gp.old_tile)) UpdateLevelCrossing(gp.old_tile);
03582 }
03583 }
03584
03585
03586 if (v->IsFrontEngine() && v->tick_counter % _settings_game.pf.path_backoff_interval == 0) CheckNextTrainTile(v);
03587 }
03588
03589 if (direction_changed) first->tcache.cached_max_curve_speed = GetTrainCurveSpeedLimit(first);
03590
03591 return;
03592
03593 invalid_rail:
03594
03595 if (prev != NULL) error("Disconnecting train");
03596
03597 reverse_train_direction:
03598 v->time_counter = 0;
03599 v->cur_speed = 0;
03600 v->subspeed = 0;
03601 ReverseTrainDirection(v);
03602 }
03603
03609 static Vehicle *CollectTrackbitsFromCrashedVehiclesEnum(Vehicle *v, void *data)
03610 {
03611 TrackBits *trackbits = (TrackBits *)data;
03612
03613 if (v->type == VEH_TRAIN && (v->vehstatus & VS_CRASHED) != 0) {
03614 if (Train::From(v)->track == TRACK_BIT_WORMHOLE) {
03615
03616 *trackbits |= DiagDirToDiagTrackBits(GetTunnelBridgeDirection(v->tile));
03617 } else {
03618 *trackbits |= Train::From(v)->track;
03619 }
03620 }
03621
03622 return NULL;
03623 }
03624
03632 static void DeleteLastWagon(Train *v)
03633 {
03634 Train *first = v->First();
03635
03636
03637
03638
03639 Train *u = v;
03640 for (; v->Next() != NULL; v = v->Next()) u = v;
03641 u->SetNext(NULL);
03642
03643 if (first != v) {
03644
03645 TrainConsistChanged(first, false);
03646
03647
03648 if (first->track == TRACK_BIT_DEPOT) {
03649 SetWindowDirty(WC_VEHICLE_DEPOT, first->tile);
03650 }
03651 }
03652
03653
03654 TrackBits trackbits = v->track;
03655 TileIndex tile = v->tile;
03656 Owner owner = v->owner;
03657
03658 delete v;
03659 v = NULL;
03660
03661 if (trackbits == TRACK_BIT_WORMHOLE) {
03662
03663 trackbits = DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile));
03664 }
03665
03666 Track track = TrackBitsToTrack(trackbits);
03667 if (HasReservedTracks(tile, trackbits)) {
03668 UnreserveRailTrack(tile, track);
03669
03670
03671 TrackBits remaining_trackbits = TRACK_BIT_NONE;
03672 FindVehicleOnPos(tile, &remaining_trackbits, CollectTrackbitsFromCrashedVehiclesEnum);
03673
03674
03675 assert(TRACK_BEGIN == TRACK_X && TRACK_Y == TRACK_BEGIN + 1);
03676 for (Track t = TRACK_BEGIN; t < TRACK_END; t++) {
03677 if (HasBit(remaining_trackbits, t)) {
03678 TryReserveRailTrack(tile, t);
03679 }
03680 }
03681 }
03682
03683
03684 if (IsLevelCrossingTile(tile)) UpdateLevelCrossing(tile);
03685
03686
03687 if (IsTileType(tile, MP_TUNNELBRIDGE) || IsRailDepotTile(tile)) {
03688 UpdateSignalsOnSegment(tile, INVALID_DIAGDIR, owner);
03689 } else {
03690 SetSignalsOnBothDir(tile, track, owner);
03691 }
03692 }
03693
03694 static void ChangeTrainDirRandomly(Train *v)
03695 {
03696 static const DirDiff delta[] = {
03697 DIRDIFF_45LEFT, DIRDIFF_SAME, DIRDIFF_SAME, DIRDIFF_45RIGHT
03698 };
03699
03700 do {
03701
03702 if (!(v->vehstatus & VS_HIDDEN)) {
03703 v->direction = ChangeDir(v->direction, delta[GB(Random(), 0, 2)]);
03704 v->UpdateDeltaXY(v->direction);
03705 v->cur_image = v->GetImage(v->direction);
03706
03707
03708
03709 if (v->track != TRACK_BIT_WORMHOLE) AfterSetTrainPos(v, false);
03710 }
03711 } while ((v = v->Next()) != NULL);
03712 }
03713
03714 static bool HandleCrashedTrain(Train *v)
03715 {
03716 int state = ++v->crash_anim_pos;
03717
03718 if (state == 4 && !(v->vehstatus & VS_HIDDEN)) {
03719 CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
03720 }
03721
03722 uint32 r;
03723 if (state <= 200 && Chance16R(1, 7, r)) {
03724 int index = (r * 10 >> 16);
03725
03726 Vehicle *u = v;
03727 do {
03728 if (--index < 0) {
03729 r = Random();
03730
03731 CreateEffectVehicleRel(u,
03732 GB(r, 8, 3) + 2,
03733 GB(r, 16, 3) + 2,
03734 GB(r, 0, 3) + 5,
03735 EV_EXPLOSION_SMALL);
03736 break;
03737 }
03738 } while ((u = u->Next()) != NULL);
03739 }
03740
03741 if (state <= 240 && !(v->tick_counter & 3)) ChangeTrainDirRandomly(v);
03742
03743 if (state >= 4440 && !(v->tick_counter & 0x1F)) {
03744 bool ret = v->Next() != NULL;
03745 DeleteLastWagon(v);
03746 return ret;
03747 }
03748
03749 return true;
03750 }
03751
03752 static void HandleBrokenTrain(Train *v)
03753 {
03754 if (v->breakdown_ctr != 1) {
03755 v->breakdown_ctr = 1;
03756 v->cur_speed = 0;
03757
03758 if (v->breakdowns_since_last_service != 255)
03759 v->breakdowns_since_last_service++;
03760
03761 v->MarkDirty();
03762 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03763 SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
03764
03765 if (!PlayVehicleSound(v, VSE_BREAKDOWN)) {
03766 SndPlayVehicleFx((_settings_game.game_creation.landscape != LT_TOYLAND) ?
03767 SND_10_TRAIN_BREAKDOWN : SND_3A_COMEDY_BREAKDOWN_2, v);
03768 }
03769
03770 if (!(v->vehstatus & VS_HIDDEN)) {
03771 EffectVehicle *u = CreateEffectVehicleRel(v, 4, 4, 5, EV_BREAKDOWN_SMOKE);
03772 if (u != NULL) u->animation_state = v->breakdown_delay * 2;
03773 }
03774 }
03775
03776 if (!(v->tick_counter & 3)) {
03777 if (!--v->breakdown_delay) {
03778 v->breakdown_ctr = 0;
03779 v->MarkDirty();
03780 SetWindowDirty(WC_VEHICLE_VIEW, v->index);
03781 }
03782 }
03783 }
03784
03786 static const uint16 _breakdown_speeds[16] = {
03787 225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
03788 };
03789
03790
03798 static bool TrainApproachingLineEnd(Train *v, bool signal)
03799 {
03800
03801 uint x = v->x_pos & 0xF;
03802 uint y = v->y_pos & 0xF;
03803
03804
03805
03806 switch (v->direction) {
03807 case DIR_N : x = ~x + ~y + 25; break;
03808 case DIR_NW: x = y;
03809 case DIR_NE: x = ~x + 16; break;
03810 case DIR_E : x = ~x + y + 9; break;
03811 case DIR_SE: x = y; break;
03812 case DIR_S : x = x + y - 7; break;
03813 case DIR_W : x = ~y + x + 9; break;
03814 default: break;
03815 }
03816
03817
03818 if (!signal && x + (v->tcache.cached_veh_length + 1) / 2 >= TILE_SIZE) {
03819
03820 v->cur_speed = 0;
03821 ReverseTrainDirection(v);
03822 return false;
03823 }
03824
03825
03826 v->vehstatus |= VS_TRAIN_SLOWING;
03827 uint16 break_speed = _breakdown_speeds[x & 0xF];
03828 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03829
03830 return true;
03831 }
03832
03833
03839 static bool TrainCanLeaveTile(const Train *v)
03840 {
03841
03842 if (v->track == TRACK_BIT_WORMHOLE || v->track == TRACK_BIT_DEPOT) return false;
03843
03844 TileIndex tile = v->tile;
03845
03846
03847 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
03848 DiagDirection dir = GetTunnelBridgeDirection(tile);
03849 if (DiagDirToDir(dir) == v->direction) return false;
03850 }
03851
03852
03853 if (IsRailDepotTile(tile)) {
03854 DiagDirection dir = ReverseDiagDir(GetRailDepotDirection(tile));
03855 if (DiagDirToDir(dir) == v->direction) return false;
03856 }
03857
03858 return true;
03859 }
03860
03861
03869 static TileIndex TrainApproachingCrossingTile(const Train *v)
03870 {
03871 assert(v->IsFrontEngine());
03872 assert(!(v->vehstatus & VS_CRASHED));
03873
03874 if (!TrainCanLeaveTile(v)) return INVALID_TILE;
03875
03876 DiagDirection dir = TrainExitDir(v->direction, v->track);
03877 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03878
03879
03880 if (!IsLevelCrossingTile(tile) || DiagDirToAxis(dir) == GetCrossingRoadAxis(tile) ||
03881 !CheckCompatibleRail(v, tile)) {
03882 return INVALID_TILE;
03883 }
03884
03885 return tile;
03886 }
03887
03888
03895 static bool TrainCheckIfLineEnds(Train *v)
03896 {
03897
03898
03899 int t = v->breakdown_ctr;
03900 if (t > 1) {
03901 v->vehstatus |= VS_TRAIN_SLOWING;
03902
03903 uint16 break_speed = _breakdown_speeds[GB(~t, 4, 4)];
03904 if (break_speed < v->cur_speed) v->cur_speed = break_speed;
03905 } else {
03906 v->vehstatus &= ~VS_TRAIN_SLOWING;
03907 }
03908
03909 if (!TrainCanLeaveTile(v)) return true;
03910
03911
03912 DiagDirection dir = TrainExitDir(v->direction, v->track);
03913
03914 TileIndex tile = v->tile + TileOffsByDiagDir(dir);
03915
03916
03917 TrackStatus ts = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0, ReverseDiagDir(dir));
03918 TrackdirBits reachable_trackdirs = DiagdirReachesTrackdirs(dir);
03919
03920 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(ts) & reachable_trackdirs;
03921 TrackdirBits red_signals = TrackStatusToRedSignals(ts) & reachable_trackdirs;
03922
03923
03924
03925
03926 TrackBits bits = TrackdirBitsToTrackBits(trackdirbits);
03927 if (_settings_game.pf.forbid_90_deg) {
03928 bits &= ~TrackCrossesTracks(FindFirstTrack(v->track));
03929 }
03930
03931
03932 if (bits == TRACK_BIT_NONE || !CheckCompatibleRail(v, tile)) {
03933 return TrainApproachingLineEnd(v, false);
03934 }
03935
03936
03937 if ((trackdirbits & red_signals) != 0) return TrainApproachingLineEnd(v, true);
03938
03939
03940 if (IsLevelCrossingTile(tile)) MaybeBarCrossingWithSound(tile);
03941
03942 return true;
03943 }
03944
03945
03946 static bool TrainLocoHandler(Train *v, bool mode)
03947 {
03948
03949 if (v->vehstatus & VS_CRASHED) {
03950 return mode ? true : HandleCrashedTrain(v);
03951 }
03952
03953 if (v->force_proceed != 0) {
03954 ClrBit(v->flags, VRF_TRAIN_STUCK);
03955 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
03956 }
03957
03958
03959 if (v->breakdown_ctr != 0) {
03960 if (v->breakdown_ctr <= 2) {
03961 HandleBrokenTrain(v);
03962 return true;
03963 }
03964 if (!v->current_order.IsType(OT_LOADING)) v->breakdown_ctr--;
03965 }
03966
03967 if (HasBit(v->flags, VRF_REVERSING) && v->cur_speed == 0) {
03968 ReverseTrainDirection(v);
03969 }
03970
03971
03972 if ((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) return true;
03973
03974 bool valid_order = !v->current_order.IsType(OT_NOTHING) && v->current_order.GetType() != OT_CONDITIONAL;
03975 if (ProcessOrders(v) && CheckReverseTrain(v)) {
03976 v->time_counter = 0;
03977 v->cur_speed = 0;
03978 v->subspeed = 0;
03979 ReverseTrainDirection(v);
03980 return true;
03981 }
03982
03983 v->HandleLoading(mode);
03984
03985 if (v->current_order.IsType(OT_LOADING)) return true;
03986
03987 if (CheckTrainStayInDepot(v)) return true;
03988
03989 if (!mode) HandleLocomotiveSmokeCloud(v);
03990
03991
03992 if (!valid_order && !v->current_order.IsType(OT_NOTHING)) {
03993 CheckNextTrainTile(v);
03994 }
03995
03996
03997 if (!mode && HasBit(v->flags, VRF_TRAIN_STUCK)) {
03998 ++v->time_counter;
03999
04000
04001 bool turn_around = v->time_counter % (_settings_game.pf.wait_for_pbs_path * DAY_TICKS) == 0 && _settings_game.pf.wait_for_pbs_path < 255;
04002
04003 if (!turn_around && v->time_counter % _settings_game.pf.path_backoff_interval != 0 && v->force_proceed == 0) return true;
04004 if (!TryPathReserve(v)) {
04005
04006 if (turn_around) ReverseTrainDirection(v);
04007
04008 if (HasBit(v->flags, VRF_TRAIN_STUCK) && v->time_counter > 2 * _settings_game.pf.wait_for_pbs_path * DAY_TICKS) {
04009
04010 if (_settings_client.gui.lost_train_warn && v->owner == _local_company) {
04011 SetDParam(0, v->index);
04012 AddVehicleNewsItem(
04013 STR_NEWS_TRAIN_IS_STUCK,
04014 NS_ADVICE,
04015 v->index
04016 );
04017 }
04018 v->time_counter = 0;
04019 }
04020
04021 if (v->force_proceed == 0) return true;
04022 ClrBit(v->flags, VRF_TRAIN_STUCK);
04023 v->time_counter = 0;
04024 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04025 }
04026 }
04027
04028 if (v->current_order.IsType(OT_LEAVESTATION)) {
04029 v->current_order.Free();
04030 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04031 return true;
04032 }
04033
04034 int j = UpdateTrainSpeed(v);
04035
04036
04037 if (v->cur_speed == 0 && v->tcache.last_speed == 0 && (v->vehstatus & VS_STOPPED)) {
04038
04039 v->force_proceed = 0;
04040 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04041 }
04042
04043 int adv_spd = (v->direction & 1) ? 192 : 256;
04044 if (j < adv_spd) {
04045
04046 if (v->cur_speed == 0) SetLastSpeed(v, v->cur_speed);
04047 } else {
04048 TrainCheckIfLineEnds(v);
04049
04050 for (;;) {
04051 j -= adv_spd;
04052 TrainController(v, NULL);
04053
04054 if (CheckTrainCollision(v)) break;
04055
04056 adv_spd = (v->direction & 1) ? 192 : 256;
04057
04058
04059 if (j < adv_spd || v->cur_speed == 0) break;
04060
04061 OrderType order_type = v->current_order.GetType();
04062
04063 if ((order_type == OT_GOTO_WAYPOINT || order_type == OT_GOTO_STATION) &&
04064 (v->current_order.GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) &&
04065 IsTileType(v->tile, MP_STATION) &&
04066 v->current_order.GetDestination() == GetStationIndex(v->tile)) {
04067 ProcessOrders(v);
04068 }
04069 }
04070 SetLastSpeed(v, v->cur_speed);
04071 }
04072
04073 for (Train *u = v; u != NULL; u = u->Next()) {
04074 if ((u->vehstatus & VS_HIDDEN) != 0) continue;
04075
04076 u->UpdateViewport(false, false);
04077 }
04078
04079 if (v->progress == 0) v->progress = j;
04080
04081 return true;
04082 }
04083
04084
04085
04086 Money Train::GetRunningCost() const
04087 {
04088 Money cost = 0;
04089 const Train *v = this;
04090
04091 do {
04092 const Engine *e = Engine::Get(v->engine_type);
04093 if (e->u.rail.running_cost_class == INVALID_PRICE) continue;
04094
04095 uint cost_factor = GetVehicleProperty(v, PROP_TRAIN_RUNNING_COST_FACTOR, e->u.rail.running_cost);
04096 if (cost_factor == 0) continue;
04097
04098
04099 if (v->IsMultiheaded()) cost_factor /= 2;
04100
04101 cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->grffile);
04102 } while ((v = v->GetNextVehicle()) != NULL);
04103
04104 return cost;
04105 }
04106
04107
04108 bool Train::Tick()
04109 {
04110 this->tick_counter++;
04111
04112 if (this->IsFrontEngine()) {
04113 if (!(this->vehstatus & VS_STOPPED)) this->running_ticks++;
04114
04115 this->current_order_time++;
04116
04117 if (!TrainLocoHandler(this, false)) return false;
04118
04119 return TrainLocoHandler(this, true);
04120 } else if (this->IsFreeWagon() && (this->vehstatus & VS_CRASHED)) {
04121
04122 if (++this->crash_anim_pos >= 4400) {
04123 delete this;
04124 return false;
04125 }
04126 }
04127
04128 return true;
04129 }
04130
04131 static void CheckIfTrainNeedsService(Train *v)
04132 {
04133 if (Company::Get(v->owner)->settings.vehicle.servint_trains == 0 || !v->NeedsAutomaticServicing()) return;
04134 if (v->IsInDepot()) {
04135 VehicleServiceInDepot(v);
04136 return;
04137 }
04138
04139 uint max_penalty;
04140 switch (_settings_game.pf.pathfinder_for_trains) {
04141 case VPF_NPF: max_penalty = _settings_game.pf.npf.maximum_go_to_depot_penalty; break;
04142 case VPF_YAPF: max_penalty = _settings_game.pf.yapf.maximum_go_to_depot_penalty; break;
04143 default: NOT_REACHED();
04144 }
04145
04146 FindDepotData tfdd = FindClosestTrainDepot(v, max_penalty);
04147
04148 if (tfdd.best_length == UINT_MAX || tfdd.best_length > max_penalty) {
04149 if (v->current_order.IsType(OT_GOTO_DEPOT)) {
04150
04151
04152
04153 v->current_order.MakeDummy();
04154 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04155 }
04156 return;
04157 }
04158
04159 DepotID depot = GetDepotIndex(tfdd.tile);
04160
04161 if (v->current_order.IsType(OT_GOTO_DEPOT) &&
04162 v->current_order.GetDestination() != depot &&
04163 !Chance16(3, 16)) {
04164 return;
04165 }
04166
04167 v->current_order.MakeGoToDepot(depot, ODTFB_SERVICE);
04168 v->dest_tile = tfdd.tile;
04169 SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, VVW_WIDGET_START_STOP_VEH);
04170 }
04171
04172 void Train::OnNewDay()
04173 {
04174 if ((++this->day_counter & 7) == 0) DecreaseVehicleValue(this);
04175
04176 if (this->IsFrontEngine()) {
04177 CheckVehicleBreakdown(this);
04178 AgeVehicle(this);
04179
04180 CheckIfTrainNeedsService(this);
04181
04182 CheckOrders(this);
04183
04184
04185 if (this->current_order.IsType(OT_GOTO_STATION)) {
04186 TileIndex tile = Station::Get(this->current_order.GetDestination())->train_station.tile;
04187 if (tile != INVALID_TILE) this->dest_tile = tile;
04188 }
04189
04190 if (this->running_ticks != 0) {
04191
04192 CommandCost cost(EXPENSES_TRAIN_RUN, this->GetRunningCost() * this->running_ticks / (DAYS_IN_YEAR * DAY_TICKS));
04193
04194 this->profit_this_year -= cost.GetCost();
04195 this->running_ticks = 0;
04196
04197 SubtractMoneyFromCompanyFract(this->owner, cost);
04198
04199 SetWindowDirty(WC_VEHICLE_DETAILS, this->index);
04200 SetWindowClassesDirty(WC_TRAINS_LIST);
04201 }
04202 } else if (this->IsEngine()) {
04203
04204 AgeVehicle(this);
04205 }
04206 }
04207
04208 Trackdir Train::GetVehicleTrackdir() const
04209 {
04210 if (this->vehstatus & VS_CRASHED) return INVALID_TRACKDIR;
04211
04212 if (this->track == TRACK_BIT_DEPOT) {
04213
04214 return DiagDirToDiagTrackdir(GetRailDepotDirection(this->tile));
04215 }
04216
04217 if (this->track == TRACK_BIT_WORMHOLE) {
04218
04219 return DiagDirToDiagTrackdir(DirToDiagDir(this->direction));
04220 }
04221
04222 return TrackDirectionToTrackdir(FindFirstTrack(this->track), this->direction);
04223 }