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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 int GetBridgeHeight(TileIndex tile);
00098 static inline int GetBridgePixelHeight(TileIndex tile)
00099 {
00100 return GetBridgeHeight(tile) * TILE_HEIGHT;
00101 }
00102
00109 static inline void ClearSingleBridgeMiddle(TileIndex t, Axis a)
00110 {
00111 assert(MayHaveBridgeAbove(t));
00112 ClrBit(_m[t].m6, 6 + a);
00113 }
00114
00120 static inline void ClearBridgeMiddle(TileIndex t)
00121 {
00122 ClearSingleBridgeMiddle(t, AXIS_X);
00123 ClearSingleBridgeMiddle(t, AXIS_Y);
00124 }
00125
00132 static inline void SetBridgeMiddle(TileIndex t, Axis a)
00133 {
00134 assert(MayHaveBridgeAbove(t));
00135 SetBit(_m[t].m6, 6 + a);
00136 }
00137
00148 static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, TransportType tt, uint rt)
00149 {
00150 SetTileType(t, MP_TUNNELBRIDGE);
00151 SetTileOwner(t, o);
00152 _m[t].m2 = 0;
00153 _m[t].m3 = rt;
00154 _m[t].m4 = 0;
00155 _m[t].m5 = 1 << 7 | tt << 2 | d;
00156 SB(_m[t].m6, 2, 4, bridgetype);
00157 _me[t].m7 = 0;
00158 }
00159
00170 static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, Owner owner_road, Owner owner_tram, BridgeType bridgetype, DiagDirection d, RoadTypes r)
00171 {
00172 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD, 0);
00173 SetRoadOwner(t, ROADTYPE_ROAD, owner_road);
00174 if (owner_tram != OWNER_TOWN) SetRoadOwner(t, ROADTYPE_TRAM, owner_tram);
00175 SetRoadTypes(t, r);
00176 }
00177
00186 static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType r)
00187 {
00188 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL, r);
00189 }
00190
00197 static inline void MakeAqueductBridgeRamp(TileIndex t, Owner o, DiagDirection d)
00198 {
00199 MakeBridgeRamp(t, o, 0, d, TRANSPORT_WATER, 0);
00200 }
00201
00202 #endif