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00012 #ifndef BRIDGE_MAP_H
00013 #define BRIDGE_MAP_H
00014
00015 #include "direction_func.h"
00016 #include "rail_type.h"
00017 #include "transport_type.h"
00018 #include "road_map.h"
00019 #include "bridge.h"
00020
00027 static inline bool IsBridge(TileIndex t)
00028 {
00029 assert(IsTileType(t, MP_TUNNELBRIDGE));
00030 return HasBit(_m[t].m5, 7);
00031 }
00032
00038 static inline bool IsBridgeTile(TileIndex t)
00039 {
00040 return IsTileType(t, MP_TUNNELBRIDGE) && IsBridge(t);
00041 }
00042
00049 static inline bool MayHaveBridgeAbove(TileIndex t)
00050 {
00051 return
00052 IsTileType(t, MP_CLEAR) ||
00053 IsTileType(t, MP_RAILWAY) ||
00054 IsTileType(t, MP_ROAD) ||
00055 IsTileType(t, MP_WATER) ||
00056 IsTileType(t, MP_TUNNELBRIDGE) ||
00057 IsTileType(t, MP_UNMOVABLE);
00058 }
00059
00066 static inline bool IsBridgeAbove(TileIndex t)
00067 {
00068 assert(MayHaveBridgeAbove(t));
00069 return GB(_m[t].m6, 6, 2) != 0;
00070 }
00071
00078 static inline BridgeType GetBridgeType(TileIndex t)
00079 {
00080 assert(IsBridgeTile(t));
00081 return GB(_m[t].m6, 2, 4);
00082 }
00083
00090 static inline Axis GetBridgeAxis(TileIndex t)
00091 {
00092 assert(IsBridgeAbove(t));
00093 return (Axis)(GB(_m[t].m6, 6, 2) - 1);
00094 }
00095
00100 TileIndex GetNorthernBridgeEnd(TileIndex t);
00101
00106 TileIndex GetSouthernBridgeEnd(TileIndex t);
00107
00108
00113 TileIndex GetOtherBridgeEnd(TileIndex t);
00114
00120 uint GetBridgeHeight(TileIndex tile);
00121
00128 static inline void ClearSingleBridgeMiddle(TileIndex t, Axis a)
00129 {
00130 assert(MayHaveBridgeAbove(t));
00131 ClrBit(_m[t].m6, 6 + a);
00132 }
00133
00139 static inline void ClearBridgeMiddle(TileIndex t)
00140 {
00141 ClearSingleBridgeMiddle(t, AXIS_X);
00142 ClearSingleBridgeMiddle(t, AXIS_Y);
00143 }
00144
00151 static inline void SetBridgeMiddle(TileIndex t, Axis a)
00152 {
00153 assert(MayHaveBridgeAbove(t));
00154 SetBit(_m[t].m6, 6 + a);
00155 }
00156
00167 static inline void MakeBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, TransportType tt, uint rt)
00168 {
00169 SetTileType(t, MP_TUNNELBRIDGE);
00170 SetTileOwner(t, o);
00171 _m[t].m2 = 0;
00172 _m[t].m3 = rt;
00173 _m[t].m4 = 0;
00174 _m[t].m5 = 1 << 7 | tt << 2 | d;
00175 SB(_m[t].m6, 2, 4, bridgetype);
00176 _me[t].m7 = 0;
00177 }
00178
00187 static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RoadTypes r)
00188 {
00189 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD, 0);
00190 SetRoadOwner(t, ROADTYPE_ROAD, o);
00191 if (o != OWNER_TOWN) SetRoadOwner(t, ROADTYPE_TRAM, o);
00192 SetRoadTypes(t, r);
00193 }
00194
00203 static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType r)
00204 {
00205 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL, r);
00206 }
00207
00214 static inline void MakeAqueductBridgeRamp(TileIndex t, Owner o, DiagDirection d)
00215 {
00216 MakeBridgeRamp(t, o, 0, d, TRANSPORT_WATER, 0);
00217 }
00218
00219 #endif