00001
00002
00005 #include "../stdafx.h"
00006
00007 #include "yapf.hpp"
00008 #include "yapf_node_rail.hpp"
00009 #include "yapf_costrail.hpp"
00010 #include "yapf_destrail.hpp"
00011 #include "../vehicle_func.h"
00012 #include "../functions.h"
00013
00014 #define DEBUG_YAPF_CACHE 0
00015
00016 int _total_pf_time_us = 0;
00017
00018 template <class Types>
00019 class CYapfReserveTrack
00020 {
00021 public:
00022 typedef typename Types::Tpf Tpf;
00023 typedef typename Types::TrackFollower TrackFollower;
00024 typedef typename Types::NodeList::Titem Node;
00025
00026 protected:
00028 FORCEINLINE Tpf& Yapf()
00029 {
00030 return *static_cast<Tpf*>(this);
00031 }
00032
00033 private:
00034 TileIndex m_res_dest;
00035 Trackdir m_res_dest_td;
00036 Node *m_res_node;
00037 TileIndex m_res_fail_tile;
00038 Trackdir m_res_fail_td;
00039
00040 bool FindSafePositionProc(TileIndex tile, Trackdir td)
00041 {
00042 if (IsSafeWaitingPosition(Yapf().GetVehicle(), tile, td, true, !TrackFollower::Allow90degTurns())) {
00043 m_res_dest = tile;
00044 m_res_dest_td = td;
00045 return false;
00046 }
00047 return true;
00048 }
00049
00051 bool ReserveRailwayStationPlatform(TileIndex &tile, DiagDirection dir)
00052 {
00053 TileIndex start = tile;
00054 TileIndexDiff diff = TileOffsByDiagDir(dir);
00055
00056 do {
00057 if (GetRailwayStationReservation(tile)) return false;
00058 SetRailwayStationReservation(tile, true);
00059 MarkTileDirtyByTile(tile);
00060 tile = TILE_ADD(tile, diff);
00061 } while (IsCompatibleTrainStationTile(tile, start));
00062
00063 return true;
00064 }
00065
00067 bool ReserveSingleTrack(TileIndex tile, Trackdir td)
00068 {
00069 if (IsRailwayStationTile(tile)) {
00070 if (!ReserveRailwayStationPlatform(tile, TrackdirToExitdir(ReverseTrackdir(td)))) {
00071
00072 m_res_fail_tile = tile;
00073 m_res_fail_td = td;
00074 }
00075 } else {
00076 if (!TryReserveRailTrack(tile, TrackdirToTrack(td))) {
00077
00078 m_res_fail_tile = tile;
00079 m_res_fail_td = td;
00080 return false;
00081 }
00082 }
00083
00084 return tile != m_res_dest || td != m_res_dest_td;
00085 }
00086
00088 bool UnreserveSingleTrack(TileIndex tile, Trackdir td)
00089 {
00090 if (IsRailwayStationTile(tile)) {
00091 TileIndex start = tile;
00092 TileIndexDiff diff = TileOffsByDiagDir(TrackdirToExitdir(ReverseTrackdir(td)));
00093 while ((tile != m_res_fail_tile || td != m_res_fail_td) && IsCompatibleTrainStationTile(tile, start)) {
00094 SetRailwayStationReservation(tile, false);
00095 tile = TILE_ADD(tile, diff);
00096 }
00097 } else if (tile != m_res_fail_tile || td != m_res_fail_td) {
00098 UnreserveRailTrack(tile, TrackdirToTrack(td));
00099 }
00100 return (tile != m_res_dest || td != m_res_dest_td) && (tile != m_res_fail_tile || td != m_res_fail_td);
00101 }
00102
00103 public:
00105 inline void SetReservationTarget(Node *node, TileIndex tile, Trackdir td)
00106 {
00107 m_res_node = node;
00108 m_res_dest = tile;
00109 m_res_dest_td = td;
00110 }
00111
00113 inline void FindSafePositionOnNode(Node *node)
00114 {
00115 assert(node->m_parent != NULL);
00116
00117
00118 if (node->m_parent->m_num_signals_passed >= 2) return;
00119
00120 if (!node->IterateTiles(Yapf().GetVehicle(), Yapf(), *this, &CYapfReserveTrack<Types>::FindSafePositionProc)) {
00121 m_res_node = node;
00122 }
00123 }
00124
00126 bool TryReservePath(PBSTileInfo *target)
00127 {
00128 m_res_fail_tile = INVALID_TILE;
00129
00130 if (target != NULL) {
00131 target->tile = m_res_dest;
00132 target->trackdir = m_res_dest_td;
00133 target->okay = false;
00134 }
00135
00136
00137 if (!IsWaitingPositionFree(Yapf().GetVehicle(), m_res_dest, m_res_dest_td)) return false;
00138
00139 for (Node *node = m_res_node; node->m_parent != NULL; node = node->m_parent) {
00140 node->IterateTiles(Yapf().GetVehicle(), Yapf(), *this, &CYapfReserveTrack<Types>::ReserveSingleTrack);
00141 if (m_res_fail_tile != INVALID_TILE) {
00142
00143 Node *fail_node = m_res_node;
00144 TileIndex stop_tile = m_res_fail_tile;
00145 do {
00146
00147 m_res_fail_tile = fail_node == node ? stop_tile : INVALID_TILE;
00148 fail_node->IterateTiles(Yapf().GetVehicle(), Yapf(), *this, &CYapfReserveTrack<Types>::UnreserveSingleTrack);
00149 } while (fail_node != node && (fail_node = fail_node->m_parent) != NULL);
00150
00151 return false;
00152 }
00153 }
00154
00155 if (target != NULL) target->okay = true;
00156
00157 if (Yapf().CanUseGlobalCache(*m_res_node))
00158 YapfNotifyTrackLayoutChange(INVALID_TILE, INVALID_TRACK);
00159
00160 return true;
00161 }
00162 };
00163
00164 template <class Types>
00165 class CYapfFollowAnyDepotRailT
00166 {
00167 public:
00168 typedef typename Types::Tpf Tpf;
00169 typedef typename Types::TrackFollower TrackFollower;
00170 typedef typename Types::NodeList::Titem Node;
00171 typedef typename Node::Key Key;
00172
00173 protected:
00175 FORCEINLINE Tpf& Yapf()
00176 {
00177 return *static_cast<Tpf*>(this);
00178 }
00179
00180 public:
00184 inline void PfFollowNode(Node& old_node)
00185 {
00186 TrackFollower F(Yapf().GetVehicle());
00187 if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir())) {
00188 Yapf().AddMultipleNodes(&old_node, F);
00189 }
00190 }
00191
00193 FORCEINLINE char TransportTypeChar() const
00194 {
00195 return 't';
00196 }
00197
00198 static bool stFindNearestDepotTwoWay(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
00199 {
00200 Tpf pf1;
00201 bool result1 = pf1.FindNearestDepotTwoWay(v, t1, td1, t2, td2, max_distance, reverse_penalty, depot_tile, reversed);
00202
00203 #if DEBUG_YAPF_CACHE
00204 Tpf pf2;
00205 TileIndex depot_tile2 = INVALID_TILE;
00206 bool reversed2 = false;
00207 pf2.DisableCache(true);
00208 bool result2 = pf2.FindNearestDepotTwoWay(v, t1, td1, t2, td2, max_distance, reverse_penalty, &depot_tile2, &reversed2);
00209 if (result1 != result2 || (result1 && (*depot_tile != depot_tile2 || *reversed != reversed2))) {
00210 DEBUG(yapf, 0, "CACHE ERROR: FindNearestDepotTwoWay() = [%s, %s]", result1 ? "T" : "F", result2 ? "T" : "F");
00211 }
00212 #endif
00213
00214 return result1;
00215 }
00216
00217 FORCEINLINE bool FindNearestDepotTwoWay(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
00218 {
00219
00220 Yapf().SetOrigin(t1, td1, t2, td2, reverse_penalty, true);
00221 Yapf().SetDestination(v);
00222 Yapf().SetMaxCost(YAPF_TILE_LENGTH * max_distance);
00223
00224
00225 bool bFound = Yapf().FindPath(v);
00226 if (!bFound) return false;
00227
00228
00229
00230 Node *n = Yapf().GetBestNode();
00231 *depot_tile = n->GetLastTile();
00232
00233
00234 Node *pNode = n;
00235 while (pNode->m_parent != NULL) {
00236 pNode = pNode->m_parent;
00237 }
00238
00239
00240
00241 *reversed = (pNode->m_cost != 0);
00242
00243 return true;
00244 }
00245 };
00246
00247 template <class Types>
00248 class CYapfFollowAnySafeTileRailT : public CYapfReserveTrack<Types>
00249 {
00250 public:
00251 typedef typename Types::Tpf Tpf;
00252 typedef typename Types::TrackFollower TrackFollower;
00253 typedef typename Types::NodeList::Titem Node;
00254 typedef typename Node::Key Key;
00255
00256 protected:
00258 FORCEINLINE Tpf& Yapf()
00259 {
00260 return *static_cast<Tpf*>(this);
00261 }
00262
00263 public:
00267 inline void PfFollowNode(Node& old_node)
00268 {
00269 TrackFollower F(Yapf().GetVehicle(), Yapf().GetCompatibleRailTypes());
00270 if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir()) && F.MaskReservedTracks()) {
00271 Yapf().AddMultipleNodes(&old_node, F);
00272 }
00273 }
00274
00276 FORCEINLINE char TransportTypeChar() const
00277 {
00278 return 't';
00279 }
00280
00281 static bool stFindNearestSafeTile(const Vehicle *v, TileIndex t1, Trackdir td, bool override_railtype)
00282 {
00283
00284 Tpf pf1;
00285 #if !DEBUG_YAPF_CACHE
00286 bool result1 = pf1.FindNearestSafeTile(v, t1, td, override_railtype, false);
00287
00288 #else
00289 bool result2 = pf1.FindNearestSafeTile(v, t1, td, override_railtype, true);
00290 Tpf pf2;
00291 pf2.DisableCache(true);
00292 bool result1 = pf2.FindNearestSafeTile(v, t1, td, override_railtype, false);
00293 if (result1 != result2) {
00294 DEBUG(yapf, 0, "CACHE ERROR: FindSafeTile() = [%s, %s]", result2 ? "T" : "F", result1 ? "T" : "F");
00295 DumpTarget dmp1, dmp2;
00296 pf1.DumpBase(dmp1);
00297 pf2.DumpBase(dmp2);
00298 FILE *f1 = fopen("C:\\yapf1.txt", "wt");
00299 FILE *f2 = fopen("C:\\yapf2.txt", "wt");
00300 fwrite(dmp1.m_out.Data(), 1, dmp1.m_out.Size(), f1);
00301 fwrite(dmp2.m_out.Data(), 1, dmp2.m_out.Size(), f2);
00302 fclose(f1);
00303 fclose(f2);
00304 }
00305 #endif
00306
00307 return result1;
00308 }
00309
00310 bool FindNearestSafeTile(const Vehicle *v, TileIndex t1, Trackdir td, bool override_railtype, bool dont_reserve)
00311 {
00312
00313 Yapf().SetOrigin(t1, td);
00314 Yapf().SetDestination(v, override_railtype);
00315
00316 bool bFound = Yapf().FindPath(v);
00317 if (!bFound) return false;
00318
00319
00320 Node *pNode = Yapf().GetBestNode();
00321 this->SetReservationTarget(pNode, pNode->GetLastTile(), pNode->GetLastTrackdir());
00322
00323
00324 Node *pPrev = NULL;
00325 while (pNode->m_parent != NULL) {
00326 pPrev = pNode;
00327 pNode = pNode->m_parent;
00328
00329 this->FindSafePositionOnNode(pPrev);
00330 }
00331
00332 return dont_reserve || this->TryReservePath(NULL);
00333 }
00334 };
00335
00336 template <class Types>
00337 class CYapfFollowRailT : public CYapfReserveTrack<Types>
00338 {
00339 public:
00340 typedef typename Types::Tpf Tpf;
00341 typedef typename Types::TrackFollower TrackFollower;
00342 typedef typename Types::NodeList::Titem Node;
00343 typedef typename Node::Key Key;
00344
00345 protected:
00347 FORCEINLINE Tpf& Yapf()
00348 {
00349 return *static_cast<Tpf*>(this);
00350 }
00351
00352 public:
00356 inline void PfFollowNode(Node& old_node)
00357 {
00358 TrackFollower F(Yapf().GetVehicle());
00359 if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir())) {
00360 Yapf().AddMultipleNodes(&old_node, F);
00361 }
00362 }
00363
00365 FORCEINLINE char TransportTypeChar() const
00366 {
00367 return 't';
00368 }
00369
00370 static Trackdir stChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
00371 {
00372
00373 Tpf pf1;
00374 #if !DEBUG_YAPF_CACHE
00375 Trackdir result1 = pf1.ChooseRailTrack(v, tile, enterdir, tracks, path_not_found, reserve_track, target);
00376
00377 #else
00378 Trackdir result1 = pf1.ChooseRailTrack(v, tile, enterdir, tracks, path_not_found, false, NULL);
00379 Tpf pf2;
00380 pf2.DisableCache(true);
00381 Trackdir result2 = pf2.ChooseRailTrack(v, tile, enterdir, tracks, path_not_found, reserve_track, target);
00382 if (result1 != result2) {
00383 DEBUG(yapf, 0, "CACHE ERROR: ChooseRailTrack() = [%d, %d]", result1, result2);
00384 DumpTarget dmp1, dmp2;
00385 pf1.DumpBase(dmp1);
00386 pf2.DumpBase(dmp2);
00387 FILE *f1 = fopen("C:\\yapf1.txt", "wt");
00388 FILE *f2 = fopen("C:\\yapf2.txt", "wt");
00389 fwrite(dmp1.m_out.Data(), 1, dmp1.m_out.Size(), f1);
00390 fwrite(dmp2.m_out.Data(), 1, dmp2.m_out.Size(), f2);
00391 fclose(f1);
00392 fclose(f2);
00393 }
00394 #endif
00395
00396 return result1;
00397 }
00398
00399 FORCEINLINE Trackdir ChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
00400 {
00401 if (target != NULL) target->tile = INVALID_TILE;
00402
00403
00404 PBSTileInfo origin = FollowTrainReservation(v);
00405 Yapf().SetOrigin(origin.tile, origin.trackdir, INVALID_TILE, INVALID_TRACKDIR, 1, true);
00406 Yapf().SetDestination(v);
00407
00408
00409 bool path_found = Yapf().FindPath(v);
00410 if (path_not_found != NULL) {
00411
00412
00413 *path_not_found = !(path_found || Yapf().m_stopped_on_first_two_way_signal);
00414 }
00415
00416
00417 Trackdir next_trackdir = INVALID_TRACKDIR;
00418 Node *pNode = Yapf().GetBestNode();
00419 if (pNode != NULL) {
00420
00421 this->SetReservationTarget(pNode, pNode->GetLastTile(), pNode->GetLastTrackdir());
00422
00423
00424
00425 Node *pPrev = NULL;
00426 while (pNode->m_parent != NULL) {
00427 pPrev = pNode;
00428 pNode = pNode->m_parent;
00429
00430 this->FindSafePositionOnNode(pPrev);
00431 }
00432
00433 Node& best_next_node = *pPrev;
00434 next_trackdir = best_next_node.GetTrackdir();
00435
00436 if (reserve_track && path_found) this->TryReservePath(target);
00437 }
00438 return next_trackdir;
00439 }
00440
00441 static bool stCheckReverseTrain(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int reverse_penalty)
00442 {
00443 Tpf pf1;
00444 bool result1 = pf1.CheckReverseTrain(v, t1, td1, t2, td2, reverse_penalty);
00445
00446 #if DEBUG_YAPF_CACHE
00447 Tpf pf2;
00448 pf2.DisableCache(true);
00449 bool result2 = pf2.CheckReverseTrain(v, t1, td1, t2, td2, reverse_penalty);
00450 if (result1 != result2) {
00451 DEBUG(yapf, 0, "CACHE ERROR: CheckReverseTrain() = [%s, %s]", result1 ? "T" : "F", result2 ? "T" : "F");
00452 }
00453 #endif
00454
00455 return result1;
00456 }
00457
00458 FORCEINLINE bool CheckReverseTrain(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int reverse_penalty)
00459 {
00460
00461
00462 Yapf().SetOrigin(t1, td1, t2, td2, reverse_penalty, false);
00463 Yapf().SetDestination(v);
00464
00465
00466 bool bFound = Yapf().FindPath(v);
00467
00468 if (!bFound) return false;
00469
00470
00471
00472 Node *pNode = Yapf().GetBestNode();
00473 while (pNode->m_parent != NULL) {
00474 pNode = pNode->m_parent;
00475 }
00476
00477
00478 Node& best_org_node = *pNode;
00479 bool reversed = (best_org_node.m_cost != 0);
00480 return reversed;
00481 }
00482 };
00483
00484 template <class Tpf_, class Ttrack_follower, class Tnode_list, template <class Types> class TdestinationT, template <class Types> class TfollowT>
00485 struct CYapfRail_TypesT
00486 {
00487 typedef CYapfRail_TypesT<Tpf_, Ttrack_follower, Tnode_list, TdestinationT, TfollowT> Types;
00488
00489 typedef Tpf_ Tpf;
00490 typedef Ttrack_follower TrackFollower;
00491 typedef Tnode_list NodeList;
00492 typedef CYapfBaseT<Types> PfBase;
00493 typedef TfollowT<Types> PfFollow;
00494 typedef CYapfOriginTileTwoWayT<Types> PfOrigin;
00495 typedef TdestinationT<Types> PfDestination;
00496 typedef CYapfSegmentCostCacheGlobalT<Types> PfCache;
00497 typedef CYapfCostRailT<Types> PfCost;
00498 };
00499
00500 struct CYapfRail1 : CYapfT<CYapfRail_TypesT<CYapfRail1 , CFollowTrackRail , CRailNodeListTrackDir, CYapfDestinationTileOrStationRailT, CYapfFollowRailT> > {};
00501 struct CYapfRail2 : CYapfT<CYapfRail_TypesT<CYapfRail2 , CFollowTrackRailNo90, CRailNodeListTrackDir, CYapfDestinationTileOrStationRailT, CYapfFollowRailT> > {};
00502
00503 struct CYapfAnyDepotRail1 : CYapfT<CYapfRail_TypesT<CYapfAnyDepotRail1, CFollowTrackRail , CRailNodeListTrackDir, CYapfDestinationAnyDepotRailT , CYapfFollowAnyDepotRailT> > {};
00504 struct CYapfAnyDepotRail2 : CYapfT<CYapfRail_TypesT<CYapfAnyDepotRail2, CFollowTrackRailNo90, CRailNodeListTrackDir, CYapfDestinationAnyDepotRailT , CYapfFollowAnyDepotRailT> > {};
00505
00506 struct CYapfAnySafeTileRail1 : CYapfT<CYapfRail_TypesT<CYapfAnySafeTileRail1, CFollowTrackFreeRail , CRailNodeListTrackDir, CYapfDestinationAnySafeTileRailT , CYapfFollowAnySafeTileRailT> > {};
00507 struct CYapfAnySafeTileRail2 : CYapfT<CYapfRail_TypesT<CYapfAnySafeTileRail2, CFollowTrackFreeRailNo90, CRailNodeListTrackDir, CYapfDestinationAnySafeTileRailT , CYapfFollowAnySafeTileRailT> > {};
00508
00509
00510 Trackdir YapfChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
00511 {
00512
00513 typedef Trackdir (*PfnChooseRailTrack)(const Vehicle*, TileIndex, DiagDirection, TrackBits, bool*, bool, PBSTileInfo*);
00514 PfnChooseRailTrack pfnChooseRailTrack = &CYapfRail1::stChooseRailTrack;
00515
00516
00517 if (_settings_game.pf.forbid_90_deg) {
00518 pfnChooseRailTrack = &CYapfRail2::stChooseRailTrack;
00519 }
00520
00521 Trackdir td_ret = pfnChooseRailTrack(v, tile, enterdir, tracks, path_not_found, reserve_track, target);
00522
00523 return td_ret;
00524 }
00525
00526 bool YapfCheckReverseTrain(const Vehicle *v)
00527 {
00528
00529 const Vehicle *last_veh = GetLastVehicleInChain(v);
00530
00531
00532 Trackdir td = GetVehicleTrackdir(v);
00533 Trackdir td_rev = ReverseTrackdir(GetVehicleTrackdir(last_veh));
00534
00535
00536 TileIndex tile = v->tile;
00537 TileIndex tile_rev = last_veh->tile;
00538
00539 int reverse_penalty = 0;
00540
00541 if (v->u.rail.track == TRACK_BIT_WORMHOLE) {
00542
00543 DiagDirection dir_into_wormhole = GetTunnelBridgeDirection(tile);
00544
00545 if (TrackdirToExitdir(td) == dir_into_wormhole) tile = GetOtherTunnelBridgeEnd(tile);
00546
00547
00548
00549 TileIndex cur_tile = TileVirtXY(v->x_pos, v->y_pos);
00550
00551
00552
00553 reverse_penalty -= DistanceManhattan(cur_tile, tile) * YAPF_TILE_LENGTH;
00554 }
00555
00556 if (last_veh->u.rail.track == TRACK_BIT_WORMHOLE) {
00557
00558 DiagDirection dir_into_wormhole = GetTunnelBridgeDirection(tile_rev);
00559
00560 if (TrackdirToExitdir(td_rev) == dir_into_wormhole) tile_rev = GetOtherTunnelBridgeEnd(tile_rev);
00561
00562
00563
00564 TileIndex cur_tile = TileVirtXY(last_veh->x_pos, last_veh->y_pos);
00565
00566
00567 reverse_penalty += DistanceManhattan(cur_tile, tile_rev) * YAPF_TILE_LENGTH;
00568 }
00569
00570 typedef bool (*PfnCheckReverseTrain)(const Vehicle*, TileIndex, Trackdir, TileIndex, Trackdir, int);
00571 PfnCheckReverseTrain pfnCheckReverseTrain = CYapfRail1::stCheckReverseTrain;
00572
00573
00574 if (_settings_game.pf.forbid_90_deg) {
00575 pfnCheckReverseTrain = &CYapfRail2::stCheckReverseTrain;
00576 }
00577
00578
00579 if (reverse_penalty == 0) reverse_penalty = 1;
00580
00581 bool reverse = pfnCheckReverseTrain(v, tile, td, tile_rev, td_rev, reverse_penalty);
00582
00583 return reverse;
00584 }
00585
00586 bool YapfFindNearestRailDepotTwoWay(const Vehicle *v, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
00587 {
00588 *depot_tile = INVALID_TILE;
00589 *reversed = false;
00590
00591 const Vehicle *last_veh = GetLastVehicleInChain(v);
00592
00593 PBSTileInfo origin = FollowTrainReservation(v);
00594 TileIndex last_tile = last_veh->tile;
00595 Trackdir td_rev = ReverseTrackdir(GetVehicleTrackdir(last_veh));
00596
00597 typedef bool (*PfnFindNearestDepotTwoWay)(const Vehicle*, TileIndex, Trackdir, TileIndex, Trackdir, int, int, TileIndex*, bool*);
00598 PfnFindNearestDepotTwoWay pfnFindNearestDepotTwoWay = &CYapfAnyDepotRail1::stFindNearestDepotTwoWay;
00599
00600
00601 if (_settings_game.pf.forbid_90_deg) {
00602 pfnFindNearestDepotTwoWay = &CYapfAnyDepotRail2::stFindNearestDepotTwoWay;
00603 }
00604
00605 bool ret = pfnFindNearestDepotTwoWay(v, origin.tile, origin.trackdir, last_tile, td_rev, max_distance, reverse_penalty, depot_tile, reversed);
00606 return ret;
00607 }
00608
00609 bool YapfRailFindNearestSafeTile(const Vehicle *v, TileIndex tile, Trackdir td, bool override_railtype)
00610 {
00611 typedef bool (*PfnFindNearestSafeTile)(const Vehicle*, TileIndex, Trackdir, bool);
00612 PfnFindNearestSafeTile pfnFindNearestSafeTile = CYapfAnySafeTileRail1::stFindNearestSafeTile;
00613
00614
00615 if (_settings_game.pf.forbid_90_deg) {
00616 pfnFindNearestSafeTile = &CYapfAnySafeTileRail2::stFindNearestSafeTile;
00617 }
00618
00619 return pfnFindNearestSafeTile(v, tile, td, override_railtype);
00620 }
00621
00623 int CSegmentCostCacheBase::s_rail_change_counter = 0;
00624
00625 void YapfNotifyTrackLayoutChange(TileIndex tile, Track track)
00626 {
00627 CSegmentCostCacheBase::NotifyTrackLayoutChange(tile, track);
00628 }