00001
00002
00005 #ifndef BRIDGE_MAP_H
00006 #define BRIDGE_MAP_H
00007
00008 #include "direction_func.h"
00009 #include "rail_type.h"
00010 #include "transport_type.h"
00011 #include "road_map.h"
00012 #include "bridge.h"
00013
00020 static inline bool IsBridge(TileIndex t)
00021 {
00022 assert(IsTileType(t, MP_TUNNELBRIDGE));
00023 return HasBit(_m[t].m5, 7);
00024 }
00025
00031 static inline bool IsBridgeTile(TileIndex t)
00032 {
00033 return IsTileType(t, MP_TUNNELBRIDGE) && IsBridge(t);
00034 }
00035
00042 static inline bool MayHaveBridgeAbove(TileIndex t)
00043 {
00044 return
00045 IsTileType(t, MP_CLEAR) ||
00046 IsTileType(t, MP_RAILWAY) ||
00047 IsTileType(t, MP_ROAD) ||
00048 IsTileType(t, MP_WATER) ||
00049 IsTileType(t, MP_TUNNELBRIDGE) ||
00050 IsTileType(t, MP_UNMOVABLE);
00051 }
00052
00059 static inline bool IsBridgeAbove(TileIndex t)
00060 {
00061 assert(MayHaveBridgeAbove(t));
00062 return GB(_m[t].m6, 6, 2) != 0;
00063 }
00064
00071 static inline BridgeType GetBridgeType(TileIndex t)
00072 {
00073 assert(IsBridgeTile(t));
00074 return GB(_m[t].m2, 4, 4);
00075 }
00076
00083 static inline Axis GetBridgeAxis(TileIndex t)
00084 {
00085 assert(IsBridgeAbove(t));
00086 return (Axis)(GB(_m[t].m6, 6, 2) - 1);
00087 }
00088
00094 TileIndex GetBridgeEnd(TileIndex t, DiagDirection d);
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 = bridgetype << 4;
00172 _m[t].m3 = rt;
00173 _m[t].m4 = 0;
00174 _m[t].m5 = 1 << 7 | tt << 2 | d;
00175 }
00176
00185 static inline void MakeRoadBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RoadTypes r)
00186 {
00187 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_ROAD, r);
00188 }
00189
00198 static inline void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType r)
00199 {
00200 MakeBridgeRamp(t, o, bridgetype, d, TRANSPORT_RAIL, r);
00201 }
00202
00209 static inline void MakeAqueductBridgeRamp(TileIndex t, Owner o, DiagDirection d)
00210 {
00211 MakeBridgeRamp(t, o, 0, d, TRANSPORT_WATER, 0);
00212 }
00213
00214 #endif