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00012 #ifndef BRIDGE_MAP_H
00013 #define BRIDGE_MAP_H
00014
00015 #include "road_map.h"
00016 #include "bridge.h"
00017
00024 static inline bool IsBridge(TileIndex t)
00025 {
00026 assert(IsTileType(t, MP_TUNNELBRIDGE));
00027 return HasBit(_m[t].m5, 7);
00028 }
00029
00035 static inline bool IsBridgeTile(TileIndex t)
00036 {
00037 return IsTileType(t, MP_TUNNELBRIDGE) && IsBridge(t);
00038 }
00039
00046 static inline bool MayHaveBridgeAbove(TileIndex t)
00047 {
00048 return IsTileType(t, MP_CLEAR) || IsTileType(t, MP_RAILWAY) || IsTileType(t, MP_ROAD) ||
00049 IsTileType(t, MP_WATER) || IsTileType(t, MP_TUNNELBRIDGE) || IsTileType(t, MP_OBJECT);
00050 }
00051
00058 static inline bool IsBridgeAbove(TileIndex t)
00059 {
00060 assert(MayHaveBridgeAbove(t));
00061 return GB(_m[t].m6, 6, 2) != 0;
00062 }
00063
00070 static inline BridgeType GetBridgeType(TileIndex t)
00071 {
00072 assert(IsBridgeTile(t));
00073 return GB(_m[t].m6, 2, 4);
00074 }
00075
00082 static inline Axis GetBridgeAxis(TileIndex t)
00083 {
00084 assert(IsBridgeAbove(t));
00085 return (Axis)(GB(_m[t].m6, 6, 2) - 1);
00086 }
00087
00088 TileIndex GetNorthernBridgeEnd(TileIndex t);
00089 TileIndex GetSouthernBridgeEnd(TileIndex t);
00090 TileIndex GetOtherBridgeEnd(TileIndex t);
00091
00092 uint GetBridgeHeight(TileIndex tile);
00093
00100 static inline void ClearSingleBridgeMiddle(TileIndex t, Axis a)
00101 {
00102 assert(MayHaveBridgeAbove(t));
00103 ClrBit(_m[t].m6, 6 + a);
00104 }
00105
00111 static inline void ClearBridgeMiddle(TileIndex t)
00112 {
00113 ClearSingleBridgeMiddle(t, AXIS_X);
00114 ClearSingleBridgeMiddle(t, AXIS_Y);
00115 }
00116
00123 static inline void SetBridgeMiddle(TileIndex t, Axis a)
00124 {
00125 assert(MayHaveBridgeAbove(t));
00126 SetBit(_m[t].m6, 6 + a);
00127 }
00128
00139 static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, TransportType tt, uint rt)
00140 {
00141 SetTileType(t, MP_TUNNELBRIDGE);
00142 SetTileOwner(t, o);
00143 _m[t].m2 = 0;
00144 _m[t].m3 = rt;
00145 _m[t].m4 = 0;
00146 _m[t].m5 = 1 << 7 | tt << 2 | d;
00147 SB(_m[t].m6, 2, 4, bridgetype);
00148 _me[t].m7 = 0;
00149 }
00150
00159 static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RoadTypes r)
00160 {
00161 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD, 0);
00162 SetRoadOwner(t, ROADTYPE_ROAD, o);
00163 if (o != OWNER_TOWN) SetRoadOwner(t, ROADTYPE_TRAM, o);
00164 SetRoadTypes(t, r);
00165 }
00166
00175 static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType r)
00176 {
00177 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL, r);
00178 }
00179
00186 static inline void MakeAqueductBridgeRamp(TileIndex t, Owner o, DiagDirection d)
00187 {
00188 MakeBridgeRamp(t, o, 0, d, TRANSPORT_WATER, 0);
00189 }
00190
00191 #endif