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00012 #ifndef ROAD_FUNC_H
00013 #define ROAD_FUNC_H
00014
00015 #include "core/bitmath_func.hpp"
00016 #include "road_type.h"
00017 #include "economy_func.h"
00018
00028 #define FOR_EACH_SET_ROADTYPE(var, road_types) FOR_EACH_SET_BIT_EX(RoadType, var, RoadTypes, road_types)
00029
00035 static inline bool IsValidRoadType(RoadType rt)
00036 {
00037 return rt == ROADTYPE_ROAD || rt == ROADTYPE_TRAM;
00038 }
00039
00046 static inline RoadTypes RoadTypeToRoadTypes(RoadType rt)
00047 {
00048 return (RoadTypes)(1 << rt);
00049 }
00050
00059 static inline RoadTypes ComplementRoadTypes(RoadTypes r)
00060 {
00061 return (RoadTypes)(ROADTYPES_ALL ^ r);
00062 }
00063
00064
00074 static inline RoadBits ComplementRoadBits(RoadBits r)
00075 {
00076 return (RoadBits)(ROAD_ALL ^ r);
00077 }
00078
00087 static inline RoadBits MirrorRoadBits(RoadBits r)
00088 {
00089 return (RoadBits)(GB(r, 0, 2) << 2 | GB(r, 2, 2));
00090 }
00091
00101 static inline RoadBits RotateRoadBits(RoadBits r, DiagDirDiff rot)
00102 {
00103 for (; rot > (DiagDirDiff)0; rot--) {
00104 r = (RoadBits)(GB(r, 0, 1) << 3 | GB(r, 1, 3));
00105 }
00106 return r;
00107 }
00108
00115 static inline bool IsStraightRoad(RoadBits r)
00116 {
00117 return (r == ROAD_X || r == ROAD_Y);
00118 }
00119
00129 static inline RoadBits DiagDirToRoadBits(DiagDirection d)
00130 {
00131 return (RoadBits)(ROAD_NW << (3 ^ d));
00132 }
00133
00143 static inline RoadBits AxisToRoadBits(Axis a)
00144 {
00145 return a == AXIS_X ? ROAD_X : ROAD_Y;
00146 }
00147
00148
00155 static inline Money RoadMaintenanceCost(RoadType roadtype, uint32 num)
00156 {
00157 assert(roadtype < ROADTYPE_END);
00158 return (_price[PR_INFRASTRUCTURE_ROAD] * (roadtype == ROADTYPE_TRAM ? 3 : 2) * num * (1 + IntSqrt(num))) >> 9;
00159 }
00160
00161 bool HasRoadTypesAvail(const CompanyID company, const RoadTypes rts);
00162 bool ValParamRoadType(const RoadType rt);
00163 RoadTypes GetCompanyRoadtypes(const CompanyID company);
00164
00165 void UpdateLevelCrossing(TileIndex tile, bool sound = true);
00166
00167 #endif