author | peter1138 |
Wed, 10 May 2006 21:55:44 +0000 | |
changeset 3808 | dadaaa757e8f |
parent 3466 | b17ee472b2af |
child 3933 | 231ae3c419f4 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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#ifndef BRIDGE_MAP_H |
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#define BRIDGE_MAP_H |
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#include "direction.h" |
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#include "macros.h" |
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#include "map.h" |
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#include "rail.h" |
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#include "road_map.h" |
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#include "tile.h" |
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static inline bool IsBridge(TileIndex t) |
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{ |
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assert(IsTileType(t, MP_TUNNELBRIDGE)); |
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return HASBIT(_m[t].m5, 7); |
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} |
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static inline bool IsBridgeTile(TileIndex t) |
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{ |
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return IsTileType(t, MP_TUNNELBRIDGE) && IsBridge(t); |
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} |
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static inline bool IsBridgeRamp(TileIndex t) |
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{ |
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assert(IsBridgeTile(t)); |
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return !HASBIT(_m[t].m5, 6); |
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} |
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static inline bool IsBridgeMiddle(TileIndex t) |
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{ |
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assert(IsBridgeTile(t)); |
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return HASBIT(_m[t].m5, 6); |
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} |
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/** |
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* Determines which piece of a bridge is contained in the current tile |
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* @param tile The tile to analyze |
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* @return the piece |
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*/ |
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static inline uint GetBridgePiece(TileIndex t) |
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{ |
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assert(IsBridgeMiddle(t)); |
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return GB(_m[t].m2, 0, 4); |
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} |
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/** |
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* Determines the type of bridge on a tile |
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* @param tile The tile to analyze |
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* @return The bridge type |
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*/ |
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static inline uint GetBridgeType(TileIndex t) |
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{ |
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assert(IsBridgeTile(t)); |
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return GB(_m[t].m2, 4, 4); |
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} |
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/** |
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* Get the direction pointing onto the bridge |
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static inline DiagDirection GetBridgeRampDirection(TileIndex t) |
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assert(IsBridgeRamp(t)); |
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/* Heavy wizardry to convert the X/Y (bit 0) + N/S (bit 5) encoding of |
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* bridges to a DiagDirection |
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*/ |
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return (DiagDirection)((6 - (_m[t].m5 >> 4 & 2) - (_m[t].m5 & 1)) % 4); |
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} |
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static inline Axis GetBridgeAxis(TileIndex t) |
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{ |
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assert(IsBridgeMiddle(t)); |
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return (Axis)GB(_m[t].m5, 0, 1); |
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} |
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static inline TransportType GetBridgeTransportType(TileIndex t) |
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{ |
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assert(IsBridgeTile(t)); |
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return (TransportType)GB(_m[t].m5, 1, 2); |
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} |
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static inline bool IsClearUnderBridge(TileIndex t) |
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{ |
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assert(IsBridgeMiddle(t)); |
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return GB(_m[t].m5, 3, 3) == 0; |
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} |
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static inline bool IsWaterUnderBridge(TileIndex t) |
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assert(IsBridgeMiddle(t)); |
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return GB(_m[t].m5, 3, 3) == 1; |
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} |
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static inline bool IsTransportUnderBridge(TileIndex t) |
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{ |
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assert(IsBridgeMiddle(t)); |
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return HASBIT(_m[t].m5, 5); |
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} |
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static inline TransportType GetTransportTypeUnderBridge(TileIndex t) |
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{ |
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assert(IsTransportUnderBridge(t)); |
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return (TransportType)GB(_m[t].m5, 3, 2); |
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} |
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static inline RoadBits GetRoadBitsUnderBridge(TileIndex t) |
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assert(GetTransportTypeUnderBridge(t) == TRANSPORT_ROAD); |
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return GetBridgeAxis(t) == AXIS_X ? ROAD_Y : ROAD_X; |
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} |
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static inline TrackBits GetRailBitsUnderBridge(TileIndex t) |
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{ |
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assert(GetTransportTypeUnderBridge(t) == TRANSPORT_RAIL); |
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return GetBridgeAxis(t) == AXIS_X ? TRACK_BIT_Y : TRACK_BIT_X; |
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} |
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/** |
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* Finds the end of a bridge in the specified direction starting at a middle tile |
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*/ |
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TileIndex GetBridgeEnd(TileIndex, DiagDirection); |
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/** |
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* Finds the southern end of a bridge starting at a middle tile |
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*/ |
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TileIndex GetSouthernBridgeEnd(TileIndex t); |
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/** |
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* Starting at one bridge end finds the other bridge end |
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*/ |
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TileIndex GetOtherBridgeEnd(TileIndex); |
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uint GetBridgeHeight(TileIndex t); |
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static inline void SetClearUnderBridge(TileIndex t) |
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{ |
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assert(IsBridgeMiddle(t)); |
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SetTileOwner(t, OWNER_NONE); |
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SB(_m[t].m5, 3, 3, 0 << 2 | 0); |
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SB(_m[t].m3, 0, 4, 0); |
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} |
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|
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static inline void SetWaterUnderBridge(TileIndex t) |
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{ |
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assert(IsBridgeMiddle(t)); |
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SetTileOwner(t, OWNER_WATER); |
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SB(_m[t].m5, 3, 3, 0 << 2 | 1); |
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SB(_m[t].m3, 0, 4, 0); |
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} |
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|
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static inline void SetRailUnderBridge(TileIndex t, Owner o, RailType r) |
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{ |
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assert(IsBridgeMiddle(t)); |
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SetTileOwner(t, o); |
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SB(_m[t].m5, 3, 3, 1 << 2 | TRANSPORT_RAIL); |
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SB(_m[t].m3, 0, 4, r); |
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} |
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|
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static inline void SetRoadUnderBridge(TileIndex t, Owner o) |
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{ |
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assert(IsBridgeMiddle(t)); |
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SetTileOwner(t, o); |
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SB(_m[t].m5, 3, 3, 1 << 2 | TRANSPORT_ROAD); |
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SB(_m[t].m3, 0, 4, 0); |
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} |
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|
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static inline void MakeBridgeRamp(TileIndex t, Owner o, uint bridgetype, DiagDirection d, TransportType tt) |
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{ |
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uint northsouth = (d == DIAGDIR_NE || d == DIAGDIR_NW); |
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SetTileType(t, MP_TUNNELBRIDGE); |
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SetTileOwner(t, o); |
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_m[t].m2 = bridgetype << 4; |
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_m[t].m4 = 0; |
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_m[t].m5 = 1 << 7 | 0 << 6 | northsouth << 5 | tt << 1 | DiagDirToAxis(d); |
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} |
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|
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static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, uint bridgetype, DiagDirection d) |
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{ |
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MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD); |
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_m[t].m3 = 0; |
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194 |
} |
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|
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static inline void MakeRailBridgeRamp(TileIndex t, Owner o, uint bridgetype, DiagDirection d, RailType r) |
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{ |
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MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL); |
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_m[t].m3 = r; |
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} |
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201 |
|
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202 |
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static inline void MakeBridgeMiddle(TileIndex t, uint bridgetype, uint piece, Axis a, TransportType tt) |
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{ |
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SetTileType(t, MP_TUNNELBRIDGE); |
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SetTileOwner(t, OWNER_NONE); |
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_m[t].m2 = bridgetype << 4 | piece; |
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_m[t].m3 = 0; |
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_m[t].m4 = 0; |
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_m[t].m5 = 1 << 7 | 1 << 6 | 0 << 5 | 0 << 3 | tt << 1 | a; |
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} |
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static inline void MakeRoadBridgeMiddle(TileIndex t, uint bridgetype, uint piece, Axis a) |
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{ |
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MakeBridgeMiddle(t, bridgetype, piece, a, TRANSPORT_ROAD); |
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} |
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static inline void MakeRailBridgeMiddle(TileIndex t, uint bridgetype, uint piece, Axis a, RailType r) |
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{ |
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MakeBridgeMiddle(t, bridgetype, piece, a, TRANSPORT_RAIL); |
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SB(_m[t].m3, 4, 4, r); |
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} |
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223 |
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#endif |