tron@3069: /* $Id$ */
tron@3069: 
tron@3518: #ifndef ROAD_H
tron@3518: #define ROAD_H
tron@3069: 
tron@3069: typedef enum RoadBits {
tron@3069: 	ROAD_NW  = 1,
tron@3069: 	ROAD_SW  = 2,
tron@3069: 	ROAD_SE  = 4,
tron@3069: 	ROAD_NE  = 8,
tron@3069: 	ROAD_X   = ROAD_SW | ROAD_NE,
tron@3069: 	ROAD_Y   = ROAD_NW | ROAD_SE,
tron@3069: 	ROAD_ALL = ROAD_X  | ROAD_Y
tron@3069: } RoadBits;
tron@3069: 
tron@3103: static inline RoadBits ComplementRoadBits(RoadBits r)
tron@3103: {
tron@3103: 	return ROAD_ALL ^ r;
tron@3103: }
tron@3103: 
tron@3146: static inline RoadBits DiagDirToRoadBits(DiagDirection d)
tron@3146: {
tron@3146: 	return 1 << (3 ^ d);
tron@3146: }
tron@3146: 
tron@3069: #endif