road.h
author celestar
Sun, 31 Dec 2006 18:03:21 +0000
branchcustombridgeheads
changeset 5615 d6197e6c420e
parent 4666 850b5b6e4bac
permissions -rw-r--r--
(svn r7705) [cbh] - Fix: Trains leave the bridge according to the trackbits that a present on the bridge head.
WARNING: zero-length bridges do not work yet
/* $Id$ */

#ifndef ROAD_H
#define ROAD_H

typedef enum RoadBits {
	ROAD_NW  = 1U,
	ROAD_SW  = 2U,
	ROAD_SE  = 4U,
	ROAD_NE  = 8U,
	ROAD_X   = ROAD_SW | ROAD_NE,
	ROAD_Y   = ROAD_NW | ROAD_SE,
	ROAD_ALL = ROAD_X  | ROAD_Y
} RoadBits;

static inline RoadBits ComplementRoadBits(RoadBits r)
{
	return (RoadBits)(ROAD_ALL ^ r);
}

static inline RoadBits DiagDirToRoadBits(DiagDirection d)
{
	return (RoadBits)(1U << (3 ^ d));
}

#endif /* ROAD_H */