00001
00002
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "npf.h"
00008 #include "bridge_map.h"
00009 #include "debug.h"
00010 #include "tile_cmd.h"
00011 #include "bridge.h"
00012 #include "landscape.h"
00013 #include "aystar.h"
00014 #include "pathfind.h"
00015 #include "station.h"
00016 #include "station_map.h"
00017 #include "depot.h"
00018 #include "tunnel_map.h"
00019 #include "network/network.h"
00020 #include "water_map.h"
00021 #include "tunnelbridge_map.h"
00022 #include "functions.h"
00023 #include "vehicle_base.h"
00024 #include "settings_type.h"
00025 #include "tunnelbridge.h"
00026
00027 static AyStar _npf_aystar;
00028
00029
00030
00031
00032 #define NPF_STRAIGHT_LENGTH (uint)(NPF_TILE_LENGTH * STRAIGHT_TRACK_LENGTH)
00033 static const uint _trackdir_length[TRACKDIR_END] = {
00034 NPF_TILE_LENGTH, NPF_TILE_LENGTH, NPF_STRAIGHT_LENGTH, NPF_STRAIGHT_LENGTH, NPF_STRAIGHT_LENGTH, NPF_STRAIGHT_LENGTH,
00035 0, 0,
00036 NPF_TILE_LENGTH, NPF_TILE_LENGTH, NPF_STRAIGHT_LENGTH, NPF_STRAIGHT_LENGTH, NPF_STRAIGHT_LENGTH, NPF_STRAIGHT_LENGTH
00037 };
00038
00045 static uint NPFDistanceTrack(TileIndex t0, TileIndex t1)
00046 {
00047 const uint dx = Delta(TileX(t0), TileX(t1));
00048 const uint dy = Delta(TileY(t0), TileY(t1));
00049
00050 const uint straightTracks = 2 * min(dx, dy);
00051
00052
00053
00054
00055 const uint diagTracks = dx + dy - straightTracks;
00056
00057
00058
00059 return diagTracks * NPF_TILE_LENGTH + straightTracks * NPF_TILE_LENGTH * STRAIGHT_TRACK_LENGTH;
00060 }
00061
00062
00063 #if 0
00064 static uint NTPHash(uint key1, uint key2)
00065 {
00066
00067 return PATHFIND_HASH_TILE(key1);
00068 }
00069 #endif
00070
00078 static uint NPFHash(uint key1, uint key2)
00079 {
00080
00081 uint part1 = TileX(key1) & NPF_HASH_HALFMASK;
00082 uint part2 = TileY(key1) & NPF_HASH_HALFMASK;
00083
00084 assert(IsValidTrackdir((Trackdir)key2));
00085 assert(IsValidTile(key1));
00086 return ((part1 << NPF_HASH_HALFBITS | part2) + (NPF_HASH_SIZE * key2 / TRACKDIR_END)) % NPF_HASH_SIZE;
00087 }
00088
00089 static int32 NPFCalcZero(AyStar* as, AyStarNode* current, OpenListNode* parent)
00090 {
00091 return 0;
00092 }
00093
00094
00095
00096
00097
00098 static TileIndex CalcClosestStationTile(StationID station, TileIndex tile)
00099 {
00100 const Station* st = GetStation(station);
00101
00102 uint minx = TileX(st->train_tile);
00103 uint miny = TileY(st->train_tile);
00104 uint maxx = minx + st->trainst_w - 1;
00105 uint maxy = miny + st->trainst_h - 1;
00106 uint x;
00107 uint y;
00108
00109
00110
00111 x = Clamp(TileX(tile), minx, maxx);
00112
00113
00114 y = Clamp(TileY(tile), miny, maxy);
00115
00116
00117 return TileXY(x, y);
00118 }
00119
00120
00121
00122
00123 static int32 NPFCalcStationOrTileHeuristic(AyStar* as, AyStarNode* current, OpenListNode* parent)
00124 {
00125 NPFFindStationOrTileData* fstd = (NPFFindStationOrTileData*)as->user_target;
00126 NPFFoundTargetData* ftd = (NPFFoundTargetData*)as->user_path;
00127 TileIndex from = current->tile;
00128 TileIndex to = fstd->dest_coords;
00129 uint dist;
00130
00131
00132 if (as->user_data[NPF_TYPE] == TRANSPORT_RAIL && fstd->station_index != INVALID_STATION)
00133 to = CalcClosestStationTile(fstd->station_index, from);
00134
00135 if (as->user_data[NPF_TYPE] == TRANSPORT_ROAD) {
00136
00137 dist = DistanceManhattan(from, to) * NPF_TILE_LENGTH;
00138 } else {
00139
00140 dist = NPFDistanceTrack(from, to);
00141 }
00142
00143 DEBUG(npf, 4, "Calculating H for: (%d, %d). Result: %d", TileX(current->tile), TileY(current->tile), dist);
00144
00145 if (dist < ftd->best_bird_dist) {
00146 ftd->best_bird_dist = dist;
00147 ftd->best_trackdir = (Trackdir)current->user_data[NPF_TRACKDIR_CHOICE];
00148 }
00149 return dist;
00150 }
00151
00152
00153
00154
00155
00156 static void NPFFillTrackdirChoice(AyStarNode* current, OpenListNode* parent)
00157 {
00158 if (parent->path.parent == NULL) {
00159 Trackdir trackdir = (Trackdir)current->direction;
00160
00161
00162 current->user_data[NPF_TRACKDIR_CHOICE] = trackdir;
00163 DEBUG(npf, 6, "Saving trackdir: 0x%X", trackdir);
00164 } else {
00165
00166 current->user_data[NPF_TRACKDIR_CHOICE] = parent->path.node.user_data[NPF_TRACKDIR_CHOICE];
00167 }
00168 }
00169
00170
00171
00172
00173 static uint NPFTunnelCost(AyStarNode* current)
00174 {
00175 DiagDirection exitdir = TrackdirToExitdir((Trackdir)current->direction);
00176 TileIndex tile = current->tile;
00177 if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(exitdir)) {
00178
00179
00180 return NPF_TILE_LENGTH * (GetTunnelBridgeLength(current->tile, GetOtherTunnelEnd(current->tile)) + 1);
00181
00182 } else {
00183
00184
00185 return NPF_TILE_LENGTH;
00186 }
00187 }
00188
00189 static inline uint NPFBridgeCost(AyStarNode *current)
00190 {
00191 return NPF_TILE_LENGTH * GetTunnelBridgeLength(current->tile, GetOtherBridgeEnd(current->tile));
00192 }
00193
00194 static uint NPFSlopeCost(AyStarNode* current)
00195 {
00196 TileIndex next = current->tile + TileOffsByDiagDir(TrackdirToExitdir((Trackdir)current->direction));
00197
00198
00199 int x1 = TileX(current->tile) * TILE_SIZE + TILE_SIZE / 2;
00200 int y1 = TileY(current->tile) * TILE_SIZE + TILE_SIZE / 2;
00201 int x2 = TileX(next) * TILE_SIZE + TILE_SIZE / 2;
00202 int y2 = TileY(next) * TILE_SIZE + TILE_SIZE / 2;
00203
00204 int dx4 = (x2 - x1) / 4;
00205 int dy4 = (y2 - y1) / 4;
00206
00207
00208
00209
00210 int z1 = GetSlopeZ(x1 + dx4, y1 + dy4);
00211 int z2 = GetSlopeZ(x2 - dx4, y2 - dy4);
00212
00213 if (z2 - z1 > 1) {
00214
00215 return _patches.npf_rail_slope_penalty;
00216 }
00217 return 0;
00218
00219
00220
00221 }
00222
00227 static void NPFMarkTile(TileIndex tile)
00228 {
00229 #ifndef NO_DEBUG_MESSAGES
00230 if (_debug_npf_level < 1 || _networking) return;
00231 switch (GetTileType(tile)) {
00232 case MP_RAILWAY:
00233
00234 if (!IsTileDepotType(tile, TRANSPORT_RAIL)) {
00235 SetRailGroundType(tile, RAIL_GROUND_BARREN);
00236 MarkTileDirtyByTile(tile);
00237 }
00238 break;
00239
00240 case MP_ROAD:
00241 if (!IsTileDepotType(tile, TRANSPORT_ROAD)) {
00242 SetRoadside(tile, ROADSIDE_BARREN);
00243 MarkTileDirtyByTile(tile);
00244 }
00245 break;
00246
00247 default:
00248 break;
00249 }
00250 #endif
00251 }
00252
00253 static int32 NPFWaterPathCost(AyStar* as, AyStarNode* current, OpenListNode* parent)
00254 {
00255
00256 int32 cost = 0;
00257 Trackdir trackdir = (Trackdir)current->direction;
00258
00259 cost = _trackdir_length[trackdir];
00260
00261 if (IsBuoyTile(current->tile) && IsDiagonalTrackdir(trackdir))
00262 cost += _patches.npf_buoy_penalty;
00263
00264 if (current->direction != NextTrackdir((Trackdir)parent->path.node.direction))
00265 cost += _patches.npf_water_curve_penalty;
00266
00267
00268
00269 return cost;
00270 }
00271
00272
00273 static int32 NPFRoadPathCost(AyStar* as, AyStarNode* current, OpenListNode* parent)
00274 {
00275 TileIndex tile = current->tile;
00276 int32 cost = 0;
00277
00278
00279 switch (GetTileType(tile)) {
00280 case MP_TUNNELBRIDGE:
00281 cost = IsTunnel(tile) ? NPFTunnelCost(current) : NPFBridgeCost(current);
00282 break;
00283
00284 case MP_ROAD:
00285 cost = NPF_TILE_LENGTH;
00286
00287 if (IsLevelCrossing(tile)) cost += _patches.npf_crossing_penalty;
00288 break;
00289
00290 case MP_STATION:
00291 cost = NPF_TILE_LENGTH;
00292
00293 if (IsDriveThroughStopTile(tile)) cost += _patches.npf_road_drive_through_penalty;
00294 break;
00295
00296 default:
00297 break;
00298 }
00299
00300
00301
00302
00303 cost += NPFSlopeCost(current);
00304
00305
00306
00307 if (!IsDiagonalTrackdir((Trackdir)current->direction))
00308 cost += _patches.npf_road_curve_penalty;
00309
00310 NPFMarkTile(tile);
00311 DEBUG(npf, 4, "Calculating G for: (%d, %d). Result: %d", TileX(current->tile), TileY(current->tile), cost);
00312 return cost;
00313 }
00314
00315
00316
00317 static int32 NPFRailPathCost(AyStar* as, AyStarNode* current, OpenListNode* parent)
00318 {
00319 TileIndex tile = current->tile;
00320 Trackdir trackdir = (Trackdir)current->direction;
00321 int32 cost = 0;
00322
00323 OpenListNode new_node;
00324
00325
00326 switch (GetTileType(tile)) {
00327 case MP_TUNNELBRIDGE:
00328 cost = IsTunnel(tile) ? NPFTunnelCost(current) : NPFBridgeCost(current);
00329 break;
00330
00331 case MP_RAILWAY:
00332 cost = _trackdir_length[trackdir];
00333 break;
00334
00335 case MP_ROAD:
00336 cost = NPF_TILE_LENGTH;
00337 break;
00338
00339 case MP_STATION:
00340
00341
00342
00343
00344
00345
00346 cost = NPF_TILE_LENGTH + _patches.npf_rail_station_penalty;
00347 break;
00348
00349 default:
00350 break;
00351 }
00352
00353
00354
00355
00356 if (IsTileType(tile, MP_RAILWAY) && HasSignalOnTrackdir(tile, trackdir)) {
00357
00358 if (GetSignalStateByTrackdir(tile, trackdir) == SIGNAL_STATE_RED) {
00359
00360 if (!NPFGetFlag(current, NPF_FLAG_SEEN_SIGNAL)) {
00361
00362
00363
00364
00365 SignalType sigtype = GetSignalType(tile, TrackdirToTrack(trackdir));
00366 if (sigtype == SIGTYPE_EXIT || sigtype == SIGTYPE_COMBO) {
00367
00368 cost += _patches.npf_rail_firstred_exit_penalty;
00369 } else {
00370 cost += _patches.npf_rail_firstred_penalty;
00371 }
00372 }
00373
00374 NPFSetFlag(current, NPF_FLAG_LAST_SIGNAL_RED, true);
00375 } else {
00376
00377 NPFSetFlag(current, NPF_FLAG_LAST_SIGNAL_RED, false);
00378 }
00379 NPFSetFlag(current, NPF_FLAG_SEEN_SIGNAL, true);
00380 }
00381
00382
00383
00384
00385
00386 new_node.path.node = *current;
00387 if (as->EndNodeCheck(as, &new_node) == AYSTAR_FOUND_END_NODE && NPFGetFlag(current, NPF_FLAG_LAST_SIGNAL_RED))
00388 cost += _patches.npf_rail_lastred_penalty;
00389
00390
00391 cost += NPFSlopeCost(current);
00392
00393
00394 if (current->direction != NextTrackdir((Trackdir)parent->path.node.direction))
00395 cost += _patches.npf_rail_curve_penalty;
00396
00397
00398
00399
00400 if (IsTileDepotType(tile, TRANSPORT_RAIL) && as->EndNodeCheck(as, &new_node) != AYSTAR_FOUND_END_NODE) {
00401
00402
00403
00404 cost += _patches.npf_rail_depot_reverse_penalty;
00405 }
00406
00407
00408
00409
00410 NPFMarkTile(tile);
00411 DEBUG(npf, 4, "Calculating G for: (%d, %d). Result: %d", TileX(current->tile), TileY(current->tile), cost);
00412 return cost;
00413 }
00414
00415
00416 static int32 NPFFindDepot(AyStar* as, OpenListNode *current)
00417 {
00418
00419
00420 return IsTileDepotType(current->path.node.tile, (TransportType)as->user_data[NPF_TYPE]) ?
00421 AYSTAR_FOUND_END_NODE : AYSTAR_DONE;
00422 }
00423
00424
00425 static int32 NPFFindStationOrTile(AyStar* as, OpenListNode *current)
00426 {
00427 NPFFindStationOrTileData* fstd = (NPFFindStationOrTileData*)as->user_target;
00428 AyStarNode *node = ¤t->path.node;
00429 TileIndex tile = node->tile;
00430
00431
00432
00433 if (
00434 (fstd->station_index == INVALID_STATION && tile == fstd->dest_coords) ||
00435 (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == fstd->station_index)
00436 ) {
00437 return AYSTAR_FOUND_END_NODE;
00438 } else {
00439 return AYSTAR_DONE;
00440 }
00441 }
00442
00443
00444
00445
00446
00447 static void NPFSaveTargetData(AyStar* as, OpenListNode* current)
00448 {
00449 NPFFoundTargetData* ftd = (NPFFoundTargetData*)as->user_path;
00450 ftd->best_trackdir = (Trackdir)current->path.node.user_data[NPF_TRACKDIR_CHOICE];
00451 ftd->best_path_dist = current->g;
00452 ftd->best_bird_dist = 0;
00453 ftd->node = current->path.node;
00454 }
00455
00465 static bool CanEnterTileOwnerCheck(Owner owner, TileIndex tile, DiagDirection enterdir)
00466 {
00467 if (IsTileType(tile, MP_RAILWAY) ||
00468 IsRailwayStationTile(tile) ||
00469 IsTileDepotType(tile, TRANSPORT_ROAD) ||
00470 IsStandardRoadStopTile(tile)) {
00471 return IsTileOwner(tile, owner);
00472 }
00473
00474 switch (GetTileType(tile)) {
00475 case MP_ROAD:
00476
00477 if (IsLevelCrossing(tile) &&
00478 DiagDirToAxis(enterdir) != GetCrossingRoadAxis(tile)) {
00479 return IsTileOwner(tile, owner);
00480 }
00481 break;
00482
00483 case MP_TUNNELBRIDGE:
00484 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL) {
00485 return IsTileOwner(tile, owner);
00486 }
00487 break;
00488
00489 default:
00490 break;
00491 }
00492
00493 return true;
00494 }
00495
00496
00500 static DiagDirection GetDepotDirection(TileIndex tile, TransportType type)
00501 {
00502 assert(IsTileDepotType(tile, type));
00503
00504 switch (type) {
00505 case TRANSPORT_RAIL: return GetRailDepotDirection(tile);
00506 case TRANSPORT_ROAD: return GetRoadDepotDirection(tile);
00507 case TRANSPORT_WATER: return GetShipDepotDirection(tile);
00508 default: return INVALID_DIAGDIR;
00509 }
00510 }
00511
00513 static DiagDirection GetSingleTramBit(TileIndex tile)
00514 {
00515 if (IsNormalRoadTile(tile)) {
00516 RoadBits rb = GetRoadBits(tile, ROADTYPE_TRAM);
00517 switch (rb) {
00518 case ROAD_NW: return DIAGDIR_NW;
00519 case ROAD_SW: return DIAGDIR_SW;
00520 case ROAD_SE: return DIAGDIR_SE;
00521 case ROAD_NE: return DIAGDIR_NE;
00522 default: break;
00523 }
00524 }
00525 return INVALID_DIAGDIR;
00526 }
00527
00538 static DiagDirection GetTileSingleEntry(TileIndex tile, TransportType type, uint subtype)
00539 {
00540 if (type != TRANSPORT_WATER && IsTileDepotType(tile, type)) return GetDepotDirection(tile, type);
00541
00542 if (type == TRANSPORT_ROAD) {
00543 if (IsStandardRoadStopTile(tile)) return GetRoadStopDir(tile);
00544 if (HasBit(subtype, ROADTYPE_TRAM)) return GetSingleTramBit(tile);
00545 }
00546
00547 return INVALID_DIAGDIR;
00548 }
00549
00559 static inline bool ForceReverse(TileIndex tile, DiagDirection dir, TransportType type, uint subtype)
00560 {
00561 DiagDirection single_entry = GetTileSingleEntry(tile, type, subtype);
00562 return single_entry != INVALID_DIAGDIR && single_entry != dir;
00563 }
00564
00576 static bool CanEnterTile(TileIndex tile, DiagDirection dir, TransportType type, uint subtype, RailTypes railtypes, Owner owner)
00577 {
00578
00579 if (IsTileType(tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(tile) != dir) return false;
00580
00581
00582 if (!CanEnterTileOwnerCheck(owner, tile, dir)) return false;
00583
00584
00585 if (type == TRANSPORT_RAIL) {
00586 RailType rail_type = GetTileRailType(tile);
00587 if (!HasBit(railtypes, rail_type)) return false;
00588 }
00589
00590
00591 DiagDirection single_entry = GetTileSingleEntry(tile, type, subtype);
00592 if (single_entry != INVALID_DIAGDIR && single_entry != ReverseDiagDir(dir)) return false;
00593
00594 return true;
00595 }
00596
00608 static TrackdirBits GetDriveableTrackdirBits(TileIndex dst_tile, Trackdir src_trackdir, TransportType type, uint subtype)
00609 {
00610 TrackdirBits trackdirbits = TrackStatusToTrackdirBits(GetTileTrackStatus(dst_tile, type, subtype));
00611
00612 if (trackdirbits == 0 && type == TRANSPORT_ROAD && HasBit(subtype, ROADTYPE_TRAM)) {
00613
00614
00615 switch (GetSingleTramBit(dst_tile)) {
00616 case DIAGDIR_NE:
00617 case DIAGDIR_SW:
00618 trackdirbits = TRACKDIR_BIT_X_NE | TRACKDIR_BIT_X_SW;
00619 break;
00620
00621 case DIAGDIR_NW:
00622 case DIAGDIR_SE:
00623 trackdirbits = TRACKDIR_BIT_Y_NW | TRACKDIR_BIT_Y_SE;
00624 break;
00625
00626 default: break;
00627 }
00628 }
00629
00630 DEBUG(npf, 4, "Next node: (%d, %d) [%d], possible trackdirs: 0x%X", TileX(dst_tile), TileY(dst_tile), dst_tile, trackdirbits);
00631
00632
00633 trackdirbits &= TrackdirReachesTrackdirs(src_trackdir);
00634
00635
00636 if (_patches.forbid_90_deg && (type == TRANSPORT_RAIL || type == TRANSPORT_WATER)) trackdirbits &= ~TrackdirCrossesTrackdirs(src_trackdir);
00637
00638 DEBUG(npf, 6, "After filtering: (%d, %d), possible trackdirs: 0x%X", TileX(dst_tile), TileY(dst_tile), trackdirbits);
00639
00640 return trackdirbits;
00641 }
00642
00643
00644
00645
00646
00647
00648
00649
00650 static void NPFFollowTrack(AyStar* aystar, OpenListNode* current)
00651 {
00652
00653 Trackdir src_trackdir = (Trackdir)current->path.node.direction;
00654 TileIndex src_tile = current->path.node.tile;
00655 DiagDirection src_exitdir = TrackdirToExitdir(src_trackdir);
00656
00657
00658
00659
00660 bool ignore_src_tile = (current->path.parent == NULL && NPFGetFlag(¤t->path.node, NPF_FLAG_IGNORE_START_TILE));
00661
00662
00663 TransportType type = (TransportType)aystar->user_data[NPF_TYPE];
00664 uint subtype = aystar->user_data[NPF_SUB_TYPE];
00665
00666
00667 aystar->num_neighbours = 0;
00668 DEBUG(npf, 4, "Expanding: (%d, %d, %d) [%d]", TileX(src_tile), TileY(src_tile), src_trackdir, src_tile);
00669
00670
00671 TileIndex dst_tile;
00672 TrackdirBits trackdirbits;
00673
00674
00675 if (ignore_src_tile) {
00676
00677 dst_tile = src_tile + TileOffsByDiagDir(src_exitdir);
00678 trackdirbits = GetDriveableTrackdirBits(dst_tile, src_trackdir, type, subtype);
00679 } else if (IsTileType(src_tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(src_tile) == src_exitdir) {
00680
00681 dst_tile = GetOtherTunnelBridgeEnd(src_tile);
00682 trackdirbits = TrackdirToTrackdirBits(src_trackdir);
00683 } else if (ForceReverse(src_tile, src_exitdir, type, subtype)) {
00684
00685 dst_tile = src_tile;
00686 src_trackdir = ReverseTrackdir(src_trackdir);
00687 trackdirbits = TrackdirToTrackdirBits(src_trackdir);
00688 } else {
00689
00690 dst_tile = AddTileIndexDiffCWrap(src_tile, TileIndexDiffCByDiagDir(src_exitdir));
00691
00692 if (dst_tile != INVALID_TILE && !CanEnterTile(dst_tile, src_exitdir, type, subtype, (RailTypes)aystar->user_data[NPF_RAILTYPES], (Owner)aystar->user_data[NPF_OWNER])) dst_tile = INVALID_TILE;
00693
00694 if (dst_tile == INVALID_TILE) {
00695
00696 if (type != TRANSPORT_ROAD || HasBit(subtype, ROADTYPE_TRAM)) return;
00697
00698 dst_tile = src_tile;
00699 src_trackdir = ReverseTrackdir(src_trackdir);
00700 }
00701
00702 trackdirbits = GetDriveableTrackdirBits(dst_tile, src_trackdir, type, subtype);
00703
00704 if (trackdirbits == 0) {
00705
00706 if (type != TRANSPORT_ROAD || HasBit(subtype, ROADTYPE_TRAM)) return;
00707
00708 dst_tile = src_tile;
00709 src_trackdir = ReverseTrackdir(src_trackdir);
00710
00711 trackdirbits = GetDriveableTrackdirBits(dst_tile, src_trackdir, type, subtype);
00712 }
00713 }
00714
00715
00716 uint i = 0;
00717 while (trackdirbits != 0) {
00718 Trackdir dst_trackdir = RemoveFirstTrackdir(&trackdirbits);
00719 DEBUG(npf, 5, "Expanded into trackdir: %d, remaining trackdirs: 0x%X", dst_trackdir, trackdirbits);
00720
00721
00722 if (IsTileType(dst_tile, MP_RAILWAY) && GetRailTileType(dst_tile) == RAIL_TILE_SIGNALS) {
00723 if (HasSignalOnTrackdir(dst_tile, ReverseTrackdir(dst_trackdir)) && !HasSignalOnTrackdir(dst_tile, dst_trackdir))
00724
00725 break;
00726 }
00727 {
00728
00729 AyStarNode* neighbour = &aystar->neighbours[i];
00730 neighbour->tile = dst_tile;
00731 neighbour->direction = dst_trackdir;
00732
00733 neighbour->user_data[NPF_NODE_FLAGS] = current->path.node.user_data[NPF_NODE_FLAGS];
00734 NPFFillTrackdirChoice(neighbour, current);
00735 }
00736 i++;
00737 }
00738 aystar->num_neighbours = i;
00739 }
00740
00741
00742
00743
00744
00745
00746
00747
00748
00749
00750
00751 static NPFFoundTargetData NPFRouteInternal(AyStarNode* start1, bool ignore_start_tile1, AyStarNode* start2, bool ignore_start_tile2, NPFFindStationOrTileData* target, AyStar_EndNodeCheck target_proc, AyStar_CalculateH heuristic_proc, TransportType type, uint sub_type, Owner owner, RailTypes railtypes, uint reverse_penalty)
00752 {
00753 int r;
00754 NPFFoundTargetData result;
00755
00756
00757 _npf_aystar.CalculateH = heuristic_proc;
00758 _npf_aystar.EndNodeCheck = target_proc;
00759 _npf_aystar.FoundEndNode = NPFSaveTargetData;
00760 _npf_aystar.GetNeighbours = NPFFollowTrack;
00761 switch (type) {
00762 default: NOT_REACHED();
00763 case TRANSPORT_RAIL: _npf_aystar.CalculateG = NPFRailPathCost; break;
00764 case TRANSPORT_ROAD: _npf_aystar.CalculateG = NPFRoadPathCost; break;
00765 case TRANSPORT_WATER: _npf_aystar.CalculateG = NPFWaterPathCost; break;
00766 }
00767
00768
00769 start1->user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00770 start1->user_data[NPF_NODE_FLAGS] = 0;
00771 NPFSetFlag(start1, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile1);
00772 _npf_aystar.addstart(&_npf_aystar, start1, 0);
00773 if (start2) {
00774 start2->user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00775 start2->user_data[NPF_NODE_FLAGS] = 0;
00776 NPFSetFlag(start2, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile2);
00777 NPFSetFlag(start2, NPF_FLAG_REVERSE, true);
00778 _npf_aystar.addstart(&_npf_aystar, start2, reverse_penalty);
00779 }
00780
00781
00782 result.best_bird_dist = (uint)-1;
00783 result.best_path_dist = (uint)-1;
00784 result.best_trackdir = INVALID_TRACKDIR;
00785 _npf_aystar.user_path = &result;
00786
00787
00788 _npf_aystar.user_target = target;
00789
00790
00791 _npf_aystar.user_data[NPF_TYPE] = type;
00792 _npf_aystar.user_data[NPF_SUB_TYPE] = sub_type;
00793 _npf_aystar.user_data[NPF_OWNER] = owner;
00794 _npf_aystar.user_data[NPF_RAILTYPES] = railtypes;
00795
00796
00797 r = AyStarMain_Main(&_npf_aystar);
00798 assert(r != AYSTAR_STILL_BUSY);
00799
00800 if (result.best_bird_dist != 0) {
00801 if (target != NULL) {
00802 DEBUG(npf, 1, "Could not find route to tile 0x%X from 0x%X.", target->dest_coords, start1->tile);
00803 } else {
00804
00805 DEBUG(npf, 1, "Could not find route to a depot from tile 0x%X.", start1->tile);
00806 }
00807
00808 }
00809 return result;
00810 }
00811
00812 NPFFoundTargetData NPFRouteToStationOrTileTwoWay(TileIndex tile1, Trackdir trackdir1, bool ignore_start_tile1, TileIndex tile2, Trackdir trackdir2, bool ignore_start_tile2, NPFFindStationOrTileData* target, TransportType type, uint sub_type, Owner owner, RailTypes railtypes)
00813 {
00814 AyStarNode start1;
00815 AyStarNode start2;
00816
00817 start1.tile = tile1;
00818 start2.tile = tile2;
00819
00820
00821 start1.user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00822 start1.direction = trackdir1;
00823 start2.direction = trackdir2;
00824 start2.user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00825
00826 return NPFRouteInternal(&start1, ignore_start_tile1, (IsValidTile(tile2) ? &start2 : NULL), ignore_start_tile2, target, NPFFindStationOrTile, NPFCalcStationOrTileHeuristic, type, sub_type, owner, railtypes, 0);
00827 }
00828
00829 NPFFoundTargetData NPFRouteToStationOrTile(TileIndex tile, Trackdir trackdir, bool ignore_start_tile, NPFFindStationOrTileData* target, TransportType type, uint sub_type, Owner owner, RailTypes railtypes)
00830 {
00831 return NPFRouteToStationOrTileTwoWay(tile, trackdir, ignore_start_tile, INVALID_TILE, INVALID_TRACKDIR, false, target, type, sub_type, owner, railtypes);
00832 }
00833
00834 NPFFoundTargetData NPFRouteToDepotBreadthFirstTwoWay(TileIndex tile1, Trackdir trackdir1, bool ignore_start_tile1, TileIndex tile2, Trackdir trackdir2, bool ignore_start_tile2, TransportType type, uint sub_type, Owner owner, RailTypes railtypes, uint reverse_penalty)
00835 {
00836 AyStarNode start1;
00837 AyStarNode start2;
00838
00839 start1.tile = tile1;
00840 start2.tile = tile2;
00841
00842
00843 start1.user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00844 start1.direction = trackdir1;
00845 start2.direction = trackdir2;
00846 start2.user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00847
00848
00849
00850 return NPFRouteInternal(&start1, ignore_start_tile1, (IsValidTile(tile2) ? &start2 : NULL), ignore_start_tile2, NULL, NPFFindDepot, NPFCalcZero, type, sub_type, owner, railtypes, reverse_penalty);
00851 }
00852
00853 NPFFoundTargetData NPFRouteToDepotBreadthFirst(TileIndex tile, Trackdir trackdir, bool ignore_start_tile, TransportType type, uint sub_type, Owner owner, RailTypes railtypes)
00854 {
00855 return NPFRouteToDepotBreadthFirstTwoWay(tile, trackdir, ignore_start_tile, INVALID_TILE, INVALID_TRACKDIR, false, type, sub_type, owner, railtypes, 0);
00856 }
00857
00858 NPFFoundTargetData NPFRouteToDepotTrialError(TileIndex tile, Trackdir trackdir, bool ignore_start_tile, TransportType type, uint sub_type, Owner owner, RailTypes railtypes)
00859 {
00860
00861
00862
00863
00864
00865
00866
00867
00868 Queue depots;
00869 int r;
00870 NPFFoundTargetData best_result = {(uint)-1, (uint)-1, INVALID_TRACKDIR, {INVALID_TILE, 0, {0, 0}}};
00871 NPFFoundTargetData result;
00872 NPFFindStationOrTileData target;
00873 AyStarNode start;
00874 Depot* current;
00875 Depot *depot;
00876
00877 init_InsSort(&depots);
00878
00879 FOR_ALL_DEPOTS(depot) {
00880
00881
00882 if (IsTileDepotType(depot->xy, type) && IsTileOwner(depot->xy, owner))
00883
00884 depots.push(&depots, depot, DistanceManhattan(tile, depot->xy));
00885 }
00886
00887
00888
00889
00890 _npf_aystar.CalculateH = NPFCalcStationOrTileHeuristic;
00891 _npf_aystar.EndNodeCheck = NPFFindStationOrTile;
00892 _npf_aystar.FoundEndNode = NPFSaveTargetData;
00893 _npf_aystar.GetNeighbours = NPFFollowTrack;
00894 switch (type) {
00895 default: NOT_REACHED();
00896 case TRANSPORT_RAIL: _npf_aystar.CalculateG = NPFRailPathCost; break;
00897 case TRANSPORT_ROAD: _npf_aystar.CalculateG = NPFRoadPathCost; break;
00898 case TRANSPORT_WATER: _npf_aystar.CalculateG = NPFWaterPathCost; break;
00899 }
00900
00901
00902 target.station_index = INVALID_STATION;
00903 _npf_aystar.user_target = ⌖
00904
00905
00906 _npf_aystar.user_data[NPF_TYPE] = type;
00907 _npf_aystar.user_data[NPF_SUB_TYPE] = sub_type;
00908 _npf_aystar.user_data[NPF_OWNER] = owner;
00909
00910
00911 start.tile = tile;
00912 start.direction = trackdir;
00913
00914
00915 _npf_aystar.user_path = &result;
00916 best_result.best_path_dist = (uint)-1;
00917 best_result.best_bird_dist = (uint)-1;
00918
00919
00920 while ((current = (Depot*)depots.pop(&depots))) {
00921
00922
00923
00924
00925 if ( DistanceManhattan(tile, current->xy * NPF_TILE_LENGTH) > best_result.best_path_dist)
00926 break;
00927
00928
00929
00930
00931 start.user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
00932 start.user_data[NPF_NODE_FLAGS] = 0;
00933 NPFSetFlag(&start, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile);
00934 _npf_aystar.addstart(&_npf_aystar, &start, 0);
00935
00936
00937 result.best_bird_dist = (uint)-1;
00938 result.best_path_dist = (uint)-1;
00939 result.best_trackdir = INVALID_TRACKDIR;
00940
00941
00942 target.dest_coords = current->xy;
00943
00944
00945 r = AyStarMain_Main(&_npf_aystar);
00946 assert(r != AYSTAR_STILL_BUSY);
00947
00948
00949 if (result.best_path_dist < best_result.best_path_dist)
00950 best_result = result;
00951 }
00952 if (result.best_bird_dist != 0) {
00953 DEBUG(npf, 1, "Could not find route to any depot from tile 0x%X.", tile);
00954 }
00955 return best_result;
00956 }
00957
00958 void InitializeNPF()
00959 {
00960 static bool first_init = true;
00961 if (first_init) {
00962 first_init = false;
00963 init_AyStar(&_npf_aystar, NPFHash, NPF_HASH_SIZE);
00964 } else {
00965 AyStarMain_Clear(&_npf_aystar);
00966 }
00967 _npf_aystar.loops_per_tick = 0;
00968 _npf_aystar.max_path_cost = 0;
00969
00970
00971
00972 _npf_aystar.max_search_nodes = _patches.npf_max_search_nodes;
00973 }
00974
00975 void NPFFillWithOrderData(NPFFindStationOrTileData* fstd, Vehicle* v)
00976 {
00977
00978
00979
00980
00981
00982
00983 if (v->current_order.type == OT_GOTO_STATION && v->type == VEH_TRAIN) {
00984 fstd->station_index = v->current_order.dest;
00985
00986 fstd->dest_coords = CalcClosestStationTile(v->current_order.dest, v->tile);
00987 } else {
00988 fstd->dest_coords = v->dest_tile;
00989 fstd->station_index = INVALID_STATION;
00990 }
00991 }