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00012 #ifndef RAIL_MAP_H
00013 #define RAIL_MAP_H
00014
00015 #include "rail_type.h"
00016 #include "depot_type.h"
00017 #include "signal_func.h"
00018 #include "direction_func.h"
00019 #include "track_func.h"
00020 #include "tile_map.h"
00021 #include "signal_type.h"
00022
00023
00025 enum RailTileType {
00026 RAIL_TILE_NORMAL = 0,
00027 RAIL_TILE_SIGNALS = 1,
00028 RAIL_TILE_DEPOT = 3,
00029 };
00030
00038 static inline RailTileType GetRailTileType(TileIndex t)
00039 {
00040 assert(IsTileType(t, MP_RAILWAY));
00041 return (RailTileType)GB(_m[t].m5, 6, 2);
00042 }
00043
00051 static inline bool IsPlainRail(TileIndex t)
00052 {
00053 RailTileType rtt = GetRailTileType(t);
00054 return rtt == RAIL_TILE_NORMAL || rtt == RAIL_TILE_SIGNALS;
00055 }
00056
00062 static inline bool IsPlainRailTile(TileIndex t)
00063 {
00064 return IsTileType(t, MP_RAILWAY) && IsPlainRail(t);
00065 }
00066
00067
00074 static inline bool HasSignals(TileIndex t)
00075 {
00076 return GetRailTileType(t) == RAIL_TILE_SIGNALS;
00077 }
00078
00085 static inline void SetHasSignals(TileIndex tile, bool signals)
00086 {
00087 assert(IsPlainRailTile(tile));
00088 SB(_m[tile].m5, 6, 1, signals);
00089 }
00090
00097 static inline bool IsRailDepot(TileIndex t)
00098 {
00099 return GetRailTileType(t) == RAIL_TILE_DEPOT;
00100 }
00101
00107 static inline bool IsRailDepotTile(TileIndex t)
00108 {
00109 return IsTileType(t, MP_RAILWAY) && IsRailDepot(t);
00110 }
00111
00117 static inline RailType GetRailType(TileIndex t)
00118 {
00119 return (RailType)GB(_m[t].m3, 0, 4);
00120 }
00121
00127 static inline void SetRailType(TileIndex t, RailType r)
00128 {
00129 SB(_m[t].m3, 0, 4, r);
00130 }
00131
00132
00138 static inline TrackBits GetTrackBits(TileIndex tile)
00139 {
00140 assert(IsPlainRailTile(tile));
00141 return (TrackBits)GB(_m[tile].m5, 0, 6);
00142 }
00143
00149 static inline void SetTrackBits(TileIndex t, TrackBits b)
00150 {
00151 assert(IsPlainRailTile(t));
00152 SB(_m[t].m5, 0, 6, b);
00153 }
00154
00162 static inline bool HasTrack(TileIndex tile, Track track)
00163 {
00164 return HasBit(GetTrackBits(tile), track);
00165 }
00166
00173 static inline DiagDirection GetRailDepotDirection(TileIndex t)
00174 {
00175 return (DiagDirection)GB(_m[t].m5, 0, 2);
00176 }
00177
00184 static inline Track GetRailDepotTrack(TileIndex t)
00185 {
00186 return DiagDirToDiagTrack(GetRailDepotDirection(t));
00187 }
00188
00189
00196 static inline TrackBits GetRailReservationTrackBits(TileIndex t)
00197 {
00198 assert(IsPlainRailTile(t));
00199 byte track_b = GB(_m[t].m2, 8, 3);
00200 Track track = (Track)(track_b - 1);
00201 if (track_b == 0) return TRACK_BIT_NONE;
00202 return (TrackBits)(TrackToTrackBits(track) | (HasBit(_m[t].m2, 11) ? TrackToTrackBits(TrackToOppositeTrack(track)) : 0));
00203 }
00204
00211 static inline void SetTrackReservation(TileIndex t, TrackBits b)
00212 {
00213 assert(IsPlainRailTile(t));
00214 assert(b != INVALID_TRACK_BIT);
00215 assert(!TracksOverlap(b));
00216 Track track = RemoveFirstTrack(&b);
00217 SB(_m[t].m2, 8, 3, track == INVALID_TRACK ? 0 : track+1);
00218 SB(_m[t].m2, 11, 1, (byte)(b != TRACK_BIT_NONE));
00219 }
00220
00228 static inline bool TryReserveTrack(TileIndex tile, Track t)
00229 {
00230 assert(HasTrack(tile, t));
00231 TrackBits bits = TrackToTrackBits(t);
00232 TrackBits res = GetRailReservationTrackBits(tile);
00233 if ((res & bits) != TRACK_BIT_NONE) return false;
00234 res |= bits;
00235 if (TracksOverlap(res)) return false;
00236 SetTrackReservation(tile, res);
00237 return true;
00238 }
00239
00246 static inline void UnreserveTrack(TileIndex tile, Track t)
00247 {
00248 assert(HasTrack(tile, t));
00249 TrackBits res = GetRailReservationTrackBits(tile);
00250 res &= ~TrackToTrackBits(t);
00251 SetTrackReservation(tile, res);
00252 }
00253
00260 static inline bool HasDepotReservation(TileIndex t)
00261 {
00262 assert(IsRailDepot(t));
00263 return HasBit(_m[t].m5, 4);
00264 }
00265
00272 static inline void SetDepotReservation(TileIndex t, bool b)
00273 {
00274 assert(IsRailDepot(t));
00275 SB(_m[t].m5, 4, 1, (byte)b);
00276 }
00277
00284 static inline TrackBits GetDepotReservationTrackBits(TileIndex t)
00285 {
00286 return HasDepotReservation(t) ? TrackToTrackBits(GetRailDepotTrack(t)) : TRACK_BIT_NONE;
00287 }
00288
00289
00290 static inline bool IsPbsSignal(SignalType s)
00291 {
00292 return s == SIGTYPE_PBS || s == SIGTYPE_PBS_ONEWAY;
00293 }
00294
00295 static inline SignalType GetSignalType(TileIndex t, Track track)
00296 {
00297 assert(GetRailTileType(t) == RAIL_TILE_SIGNALS);
00298 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 4 : 0;
00299 return (SignalType)GB(_m[t].m2, pos, 3);
00300 }
00301
00302 static inline void SetSignalType(TileIndex t, Track track, SignalType s)
00303 {
00304 assert(GetRailTileType(t) == RAIL_TILE_SIGNALS);
00305 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 4 : 0;
00306 SB(_m[t].m2, pos, 3, s);
00307 if (track == INVALID_TRACK) SB(_m[t].m2, 4, 3, s);
00308 }
00309
00310 static inline bool IsPresignalEntry(TileIndex t, Track track)
00311 {
00312 return GetSignalType(t, track) == SIGTYPE_ENTRY || GetSignalType(t, track) == SIGTYPE_COMBO;
00313 }
00314
00315 static inline bool IsPresignalExit(TileIndex t, Track track)
00316 {
00317 return GetSignalType(t, track) == SIGTYPE_EXIT || GetSignalType(t, track) == SIGTYPE_COMBO;
00318 }
00319
00321 static inline bool IsOnewaySignal(TileIndex t, Track track)
00322 {
00323 return GetSignalType(t, track) != SIGTYPE_PBS;
00324 }
00325
00326 static inline void CycleSignalSide(TileIndex t, Track track)
00327 {
00328 byte sig;
00329 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 4 : 6;
00330
00331 sig = GB(_m[t].m3, pos, 2);
00332 if (--sig == 0) sig = IsPbsSignal(GetSignalType(t, track)) ? 2 : 3;
00333 SB(_m[t].m3, pos, 2, sig);
00334 }
00335
00336 static inline SignalVariant GetSignalVariant(TileIndex t, Track track)
00337 {
00338 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 7 : 3;
00339 return (SignalVariant)GB(_m[t].m2, pos, 1);
00340 }
00341
00342 static inline void SetSignalVariant(TileIndex t, Track track, SignalVariant v)
00343 {
00344 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 7 : 3;
00345 SB(_m[t].m2, pos, 1, v);
00346 if (track == INVALID_TRACK) SB(_m[t].m2, 7, 1, v);
00347 }
00348
00353 enum SignalState {
00354 SIGNAL_STATE_RED = 0,
00355 SIGNAL_STATE_GREEN = 1,
00356 };
00357
00363 static inline void SetSignalStates(TileIndex tile, uint state)
00364 {
00365 SB(_m[tile].m4, 4, 4, state);
00366 }
00367
00373 static inline uint GetSignalStates(TileIndex tile)
00374 {
00375 return GB(_m[tile].m4, 4, 4);
00376 }
00377
00384 static inline SignalState GetSingleSignalState(TileIndex t, byte signalbit)
00385 {
00386 return (SignalState)HasBit(GetSignalStates(t), signalbit);
00387 }
00388
00394 static inline void SetPresentSignals(TileIndex tile, uint signals)
00395 {
00396 SB(_m[tile].m3, 4, 4, signals);
00397 }
00398
00404 static inline uint GetPresentSignals(TileIndex tile)
00405 {
00406 return GB(_m[tile].m3, 4, 4);
00407 }
00408
00415 static inline bool IsSignalPresent(TileIndex t, byte signalbit)
00416 {
00417 return HasBit(GetPresentSignals(t), signalbit);
00418 }
00419
00424 static inline bool HasSignalOnTrack(TileIndex tile, Track track)
00425 {
00426 assert(IsValidTrack(track));
00427 return
00428 GetRailTileType(tile) == RAIL_TILE_SIGNALS &&
00429 (GetPresentSignals(tile) & SignalOnTrack(track)) != 0;
00430 }
00431
00439 static inline bool HasSignalOnTrackdir(TileIndex tile, Trackdir trackdir)
00440 {
00441 assert (IsValidTrackdir(trackdir));
00442 return
00443 GetRailTileType(tile) == RAIL_TILE_SIGNALS &&
00444 GetPresentSignals(tile) & SignalAlongTrackdir(trackdir);
00445 }
00446
00453 static inline SignalState GetSignalStateByTrackdir(TileIndex tile, Trackdir trackdir)
00454 {
00455 assert(IsValidTrackdir(trackdir));
00456 assert(HasSignalOnTrack(tile, TrackdirToTrack(trackdir)));
00457 return GetSignalStates(tile) & SignalAlongTrackdir(trackdir) ?
00458 SIGNAL_STATE_GREEN : SIGNAL_STATE_RED;
00459 }
00460
00464 static inline void SetSignalStateByTrackdir(TileIndex tile, Trackdir trackdir, SignalState state)
00465 {
00466 if (state == SIGNAL_STATE_GREEN) {
00467 SetSignalStates(tile, GetSignalStates(tile) | SignalAlongTrackdir(trackdir));
00468 } else {
00469 SetSignalStates(tile, GetSignalStates(tile) & ~SignalAlongTrackdir(trackdir));
00470 }
00471 }
00472
00478 static inline bool HasPbsSignalOnTrackdir(TileIndex tile, Trackdir td)
00479 {
00480 return
00481 IsTileType(tile, MP_RAILWAY) &&
00482 HasSignalOnTrackdir(tile, td) &&
00483 IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)));
00484 }
00485
00492 static inline bool HasOnewaySignalBlockingTrackdir(TileIndex tile, Trackdir td)
00493 {
00494 return
00495 IsTileType(tile, MP_RAILWAY) &&
00496 HasSignalOnTrackdir(tile, ReverseTrackdir(td)) &&
00497 !HasSignalOnTrackdir(tile, td) &&
00498 IsOnewaySignal(tile, TrackdirToTrack(td));
00499 }
00500
00501
00505 RailType GetTileRailType(TileIndex tile);
00506
00508 enum RailGroundType {
00509 RAIL_GROUND_BARREN = 0,
00510 RAIL_GROUND_GRASS = 1,
00511 RAIL_GROUND_FENCE_NW = 2,
00512 RAIL_GROUND_FENCE_SE = 3,
00513 RAIL_GROUND_FENCE_SENW = 4,
00514 RAIL_GROUND_FENCE_NE = 5,
00515 RAIL_GROUND_FENCE_SW = 6,
00516 RAIL_GROUND_FENCE_NESW = 7,
00517 RAIL_GROUND_FENCE_VERT1 = 8,
00518 RAIL_GROUND_FENCE_VERT2 = 9,
00519 RAIL_GROUND_FENCE_HORIZ1 = 10,
00520 RAIL_GROUND_FENCE_HORIZ2 = 11,
00521 RAIL_GROUND_ICE_DESERT = 12,
00522 RAIL_GROUND_WATER = 13,
00523 RAIL_GROUND_HALF_SNOW = 14,
00524 };
00525
00526 static inline void SetRailGroundType(TileIndex t, RailGroundType rgt)
00527 {
00528 SB(_m[t].m4, 0, 4, rgt);
00529 }
00530
00531 static inline RailGroundType GetRailGroundType(TileIndex t)
00532 {
00533 return (RailGroundType)GB(_m[t].m4, 0, 4);
00534 }
00535
00536 static inline bool IsSnowRailGround(TileIndex t)
00537 {
00538 return GetRailGroundType(t) == RAIL_GROUND_ICE_DESERT;
00539 }
00540
00541
00542 static inline void MakeRailNormal(TileIndex t, Owner o, TrackBits b, RailType r)
00543 {
00544 SetTileType(t, MP_RAILWAY);
00545 SetTileOwner(t, o);
00546 _m[t].m2 = 0;
00547 _m[t].m3 = r;
00548 _m[t].m4 = 0;
00549 _m[t].m5 = RAIL_TILE_NORMAL << 6 | b;
00550 SB(_m[t].m6, 2, 4, 0);
00551 _me[t].m7 = 0;
00552 }
00553
00554
00555 static inline void MakeRailDepot(TileIndex t, Owner o, DepotID did, DiagDirection d, RailType r)
00556 {
00557 SetTileType(t, MP_RAILWAY);
00558 SetTileOwner(t, o);
00559 _m[t].m2 = did;
00560 _m[t].m3 = r;
00561 _m[t].m4 = 0;
00562 _m[t].m5 = RAIL_TILE_DEPOT << 6 | d;
00563 SB(_m[t].m6, 2, 4, 0);
00564 _me[t].m7 = 0;
00565 }
00566
00567 #endif