00001
00002
00005 #ifndef RAIL_MAP_H
00006 #define RAIL_MAP_H
00007
00008 #include "rail_type.h"
00009 #include "signal_func.h"
00010 #include "direction_func.h"
00011 #include "track_func.h"
00012 #include "tile_map.h"
00013 #include "signal_type.h"
00014 #include "waypoint_type.h"
00015
00016
00018 enum RailTileType {
00019 RAIL_TILE_NORMAL = 0,
00020 RAIL_TILE_SIGNALS = 1,
00021 RAIL_TILE_WAYPOINT = 2,
00022 RAIL_TILE_DEPOT = 3,
00023 };
00024
00032 static inline RailTileType GetRailTileType(TileIndex t)
00033 {
00034 assert(IsTileType(t, MP_RAILWAY));
00035 return (RailTileType)GB(_m[t].m5, 6, 2);
00036 }
00037
00045 static inline bool IsPlainRailTile(TileIndex t)
00046 {
00047 RailTileType rtt = GetRailTileType(t);
00048 return rtt == RAIL_TILE_NORMAL || rtt == RAIL_TILE_SIGNALS;
00049 }
00050
00057 static inline bool HasSignals(TileIndex t)
00058 {
00059 return GetRailTileType(t) == RAIL_TILE_SIGNALS;
00060 }
00061
00068 static inline void SetHasSignals(TileIndex tile, bool signals)
00069 {
00070 assert(IsPlainRailTile(tile));
00071 SB(_m[tile].m5, 6, 1, signals);
00072 }
00073
00080 static inline bool IsRailWaypoint(TileIndex t)
00081 {
00082 return GetRailTileType(t) == RAIL_TILE_WAYPOINT;
00083 }
00084
00090 static inline bool IsRailWaypointTile(TileIndex t)
00091 {
00092 return IsTileType(t, MP_RAILWAY) && IsRailWaypoint(t);
00093 }
00094
00101 static inline bool IsRailDepot(TileIndex t)
00102 {
00103 return GetRailTileType(t) == RAIL_TILE_DEPOT;
00104 }
00105
00111 static inline bool IsRailDepotTile(TileIndex t)
00112 {
00113 return IsTileType(t, MP_RAILWAY) && IsRailDepot(t);
00114 }
00115
00121 static inline RailType GetRailType(TileIndex t)
00122 {
00123 return (RailType)GB(_m[t].m3, 0, 4);
00124 }
00125
00131 static inline void SetRailType(TileIndex t, RailType r)
00132 {
00133 SB(_m[t].m3, 0, 4, r);
00134 }
00135
00136
00142 static inline TrackBits GetTrackBits(TileIndex tile)
00143 {
00144 return (TrackBits)GB(_m[tile].m5, 0, 6);
00145 }
00146
00152 static inline void SetTrackBits(TileIndex t, TrackBits b)
00153 {
00154 SB(_m[t].m5, 0, 6, b);
00155 }
00156
00164 static inline bool HasTrack(TileIndex tile, Track track)
00165 {
00166 return HasBit(GetTrackBits(tile), track);
00167 }
00168
00175 static inline DiagDirection GetRailDepotDirection(TileIndex t)
00176 {
00177 return (DiagDirection)GB(_m[t].m5, 0, 2);
00178 }
00179
00186 static inline Track GetRailDepotTrack(TileIndex t)
00187 {
00188 return DiagDirToDiagTrack(GetRailDepotDirection(t));
00189 }
00190
00191
00198 static inline Axis GetWaypointAxis(TileIndex t)
00199 {
00200 return (Axis)GB(_m[t].m5, 0, 1);
00201 }
00202
00209 static inline Track GetRailWaypointTrack(TileIndex t)
00210 {
00211 return AxisToTrack(GetWaypointAxis(t));
00212 }
00213
00220 static inline TrackBits GetRailWaypointBits(TileIndex t)
00221 {
00222 return TrackToTrackBits(GetRailWaypointTrack(t));
00223 }
00224
00231 static inline WaypointID GetWaypointIndex(TileIndex t)
00232 {
00233 return (WaypointID)_m[t].m2;
00234 }
00235
00236
00243 static inline TrackBits GetTrackReservation(TileIndex t)
00244 {
00245 assert(IsPlainRailTile(t));
00246 byte track_b = GB(_m[t].m2, 8, 3);
00247 Track track = (Track)(track_b - 1);
00248 if (track_b == 0) return TRACK_BIT_NONE;
00249 return (TrackBits)(TrackToTrackBits(track) | (HasBit(_m[t].m2, 11) ? TrackToTrackBits(TrackToOppositeTrack(track)) : 0));
00250 }
00251
00258 static inline void SetTrackReservation(TileIndex t, TrackBits b)
00259 {
00260 assert(IsPlainRailTile(t));
00261 assert(b != INVALID_TRACK_BIT);
00262 assert(!TracksOverlap(b));
00263 Track track = RemoveFirstTrack(&b);
00264 SB(_m[t].m2, 8, 3, track == INVALID_TRACK ? 0 : track+1);
00265 SB(_m[t].m2, 11, 1, (byte)(b != TRACK_BIT_NONE));
00266 }
00267
00275 static inline bool TryReserveTrack(TileIndex tile, Track t)
00276 {
00277 assert(HasTrack(tile, t));
00278 TrackBits bits = TrackToTrackBits(t);
00279 TrackBits res = GetTrackReservation(tile);
00280 if ((res & bits) != TRACK_BIT_NONE) return false;
00281 res |= bits;
00282 if (TracksOverlap(res)) return false;
00283 SetTrackReservation(tile, res);
00284 return true;
00285 }
00286
00293 static inline void UnreserveTrack(TileIndex tile, Track t)
00294 {
00295 assert(HasTrack(tile, t));
00296 TrackBits res = GetTrackReservation(tile);
00297 res &= ~TrackToTrackBits(t);
00298 SetTrackReservation(tile, res);
00299 }
00300
00308 static inline bool GetDepotWaypointReservation(TileIndex t)
00309 {
00310 assert(IsRailWaypoint(t) || IsRailDepot(t));
00311 return HasBit(_m[t].m5, 4);
00312 }
00313
00321 static inline void SetDepotWaypointReservation(TileIndex t, bool b)
00322 {
00323 assert(IsRailWaypoint(t) || IsRailDepot(t));
00324 SB(_m[t].m5, 4, 1, (byte)b);
00325 }
00326
00333 static inline TrackBits GetRailWaypointReservation(TileIndex t)
00334 {
00335 return GetDepotWaypointReservation(t) ? GetRailWaypointBits(t) : TRACK_BIT_NONE;
00336 }
00337
00344 static inline TrackBits GetRailDepotReservation(TileIndex t)
00345 {
00346 return GetDepotWaypointReservation(t) ? TrackToTrackBits(GetRailDepotTrack(t)) : TRACK_BIT_NONE;
00347 }
00348
00349
00350 static inline bool IsPbsSignal(SignalType s)
00351 {
00352 return s == SIGTYPE_PBS || s == SIGTYPE_PBS_ONEWAY;
00353 }
00354
00355 static inline SignalType GetSignalType(TileIndex t, Track track)
00356 {
00357 assert(GetRailTileType(t) == RAIL_TILE_SIGNALS);
00358 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 4 : 0;
00359 return (SignalType)GB(_m[t].m2, pos, 3);
00360 }
00361
00362 static inline void SetSignalType(TileIndex t, Track track, SignalType s)
00363 {
00364 assert(GetRailTileType(t) == RAIL_TILE_SIGNALS);
00365 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 4 : 0;
00366 SB(_m[t].m2, pos, 3, s);
00367 if (track == INVALID_TRACK) SB(_m[t].m2, 4, 3, s);
00368 }
00369
00370 static inline bool IsPresignalEntry(TileIndex t, Track track)
00371 {
00372 return GetSignalType(t, track) == SIGTYPE_ENTRY || GetSignalType(t, track) == SIGTYPE_COMBO;
00373 }
00374
00375 static inline bool IsPresignalExit(TileIndex t, Track track)
00376 {
00377 return GetSignalType(t, track) == SIGTYPE_EXIT || GetSignalType(t, track) == SIGTYPE_COMBO;
00378 }
00379
00381 static inline bool IsOnewaySignal(TileIndex t, Track track)
00382 {
00383 return GetSignalType(t, track) != SIGTYPE_PBS;
00384 }
00385
00386 static inline void CycleSignalSide(TileIndex t, Track track)
00387 {
00388 byte sig;
00389 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 4 : 6;
00390
00391 sig = GB(_m[t].m3, pos, 2);
00392 if (--sig == 0) sig = IsPbsSignal(GetSignalType(t, track)) ? 2 : 3;
00393 SB(_m[t].m3, pos, 2, sig);
00394 }
00395
00396 static inline SignalVariant GetSignalVariant(TileIndex t, Track track)
00397 {
00398 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 7 : 3;
00399 return (SignalVariant)GB(_m[t].m2, pos, 1);
00400 }
00401
00402 static inline void SetSignalVariant(TileIndex t, Track track, SignalVariant v)
00403 {
00404 byte pos = (track == TRACK_LOWER || track == TRACK_RIGHT) ? 7 : 3;
00405 SB(_m[t].m2, pos, 1, v);
00406 if (track == INVALID_TRACK) SB(_m[t].m2, 7, 1, v);
00407 }
00408
00413 enum SignalState {
00414 SIGNAL_STATE_RED = 0,
00415 SIGNAL_STATE_GREEN = 1,
00416 };
00417
00423 static inline void SetSignalStates(TileIndex tile, uint state)
00424 {
00425 SB(_m[tile].m4, 4, 4, state);
00426 }
00427
00433 static inline uint GetSignalStates(TileIndex tile)
00434 {
00435 return GB(_m[tile].m4, 4, 4);
00436 }
00437
00444 static inline SignalState GetSingleSignalState(TileIndex t, byte signalbit)
00445 {
00446 return (SignalState)HasBit(GetSignalStates(t), signalbit);
00447 }
00448
00454 static inline void SetPresentSignals(TileIndex tile, uint signals)
00455 {
00456 SB(_m[tile].m3, 4, 4, signals);
00457 }
00458
00464 static inline uint GetPresentSignals(TileIndex tile)
00465 {
00466 return GB(_m[tile].m3, 4, 4);
00467 }
00468
00475 static inline bool IsSignalPresent(TileIndex t, byte signalbit)
00476 {
00477 return HasBit(GetPresentSignals(t), signalbit);
00478 }
00479
00484 static inline bool HasSignalOnTrack(TileIndex tile, Track track)
00485 {
00486 assert(IsValidTrack(track));
00487 return
00488 GetRailTileType(tile) == RAIL_TILE_SIGNALS &&
00489 (GetPresentSignals(tile) & SignalOnTrack(track)) != 0;
00490 }
00491
00499 static inline bool HasSignalOnTrackdir(TileIndex tile, Trackdir trackdir)
00500 {
00501 assert (IsValidTrackdir(trackdir));
00502 return
00503 GetRailTileType(tile) == RAIL_TILE_SIGNALS &&
00504 GetPresentSignals(tile) & SignalAlongTrackdir(trackdir);
00505 }
00506
00513 static inline SignalState GetSignalStateByTrackdir(TileIndex tile, Trackdir trackdir)
00514 {
00515 assert(IsValidTrackdir(trackdir));
00516 assert(HasSignalOnTrack(tile, TrackdirToTrack(trackdir)));
00517 return GetSignalStates(tile) & SignalAlongTrackdir(trackdir) ?
00518 SIGNAL_STATE_GREEN : SIGNAL_STATE_RED;
00519 }
00520
00524 static inline void SetSignalStateByTrackdir(TileIndex tile, Trackdir trackdir, SignalState state)
00525 {
00526 if (state == SIGNAL_STATE_GREEN) {
00527 SetSignalStates(tile, GetSignalStates(tile) | SignalAlongTrackdir(trackdir));
00528 } else {
00529 SetSignalStates(tile, GetSignalStates(tile) & ~SignalAlongTrackdir(trackdir));
00530 }
00531 }
00532
00538 static inline bool HasPbsSignalOnTrackdir(TileIndex tile, Trackdir td)
00539 {
00540 return
00541 IsTileType(tile, MP_RAILWAY) &&
00542 HasSignalOnTrackdir(tile, td) &&
00543 IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)));
00544 }
00545
00552 static inline bool HasOnewaySignalBlockingTrackdir(TileIndex tile, Trackdir td)
00553 {
00554 return
00555 IsTileType(tile, MP_RAILWAY) &&
00556 HasSignalOnTrackdir(tile, ReverseTrackdir(td)) &&
00557 !HasSignalOnTrackdir(tile, td) &&
00558 IsOnewaySignal(tile, TrackdirToTrack(td));
00559 }
00560
00561
00565 RailType GetTileRailType(TileIndex tile);
00566
00568 enum RailGroundType {
00569 RAIL_GROUND_BARREN = 0,
00570 RAIL_GROUND_GRASS = 1,
00571 RAIL_GROUND_FENCE_NW = 2,
00572 RAIL_GROUND_FENCE_SE = 3,
00573 RAIL_GROUND_FENCE_SENW = 4,
00574 RAIL_GROUND_FENCE_NE = 5,
00575 RAIL_GROUND_FENCE_SW = 6,
00576 RAIL_GROUND_FENCE_NESW = 7,
00577 RAIL_GROUND_FENCE_VERT1 = 8,
00578 RAIL_GROUND_FENCE_VERT2 = 9,
00579 RAIL_GROUND_FENCE_HORIZ1 = 10,
00580 RAIL_GROUND_FENCE_HORIZ2 = 11,
00581 RAIL_GROUND_ICE_DESERT = 12,
00582 RAIL_GROUND_WATER = 13,
00583 RAIL_GROUND_HALF_SNOW = 14,
00584 };
00585
00586 static inline void SetRailGroundType(TileIndex t, RailGroundType rgt)
00587 {
00588 SB(_m[t].m4, 0, 4, rgt);
00589 }
00590
00591 static inline RailGroundType GetRailGroundType(TileIndex t)
00592 {
00593 return (RailGroundType)GB(_m[t].m4, 0, 4);
00594 }
00595
00596 static inline bool IsSnowRailGround(TileIndex t)
00597 {
00598 return GetRailGroundType(t) == RAIL_GROUND_ICE_DESERT;
00599 }
00600
00601
00602 static inline void MakeRailNormal(TileIndex t, Owner o, TrackBits b, RailType r)
00603 {
00604 SetTileType(t, MP_RAILWAY);
00605 SetTileOwner(t, o);
00606 _m[t].m2 = 0;
00607 _m[t].m3 = r;
00608 _m[t].m4 = 0;
00609 _m[t].m5 = RAIL_TILE_NORMAL << 6 | b;
00610 }
00611
00612
00613 static inline void MakeRailDepot(TileIndex t, Owner o, DiagDirection d, RailType r)
00614 {
00615 SetTileType(t, MP_RAILWAY);
00616 SetTileOwner(t, o);
00617 _m[t].m2 = 0;
00618 _m[t].m3 = r;
00619 _m[t].m4 = 0;
00620 _m[t].m5 = RAIL_TILE_DEPOT << 6 | d;
00621 }
00622
00623
00624 static inline void MakeRailWaypoint(TileIndex t, Owner o, Axis a, RailType r, uint index)
00625 {
00626 SetTileType(t, MP_RAILWAY);
00627 SetTileOwner(t, o);
00628 _m[t].m2 = index;
00629 _m[t].m3 = r;
00630 _m[t].m4 = 0;
00631 _m[t].m5 = RAIL_TILE_WAYPOINT << 6 | a;
00632 }
00633
00634 #endif