cpp/openttd-patchpack/source Files · src/road.h

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Location: cpp/openttd-patchpack/source/src/road.h

r5955:5be18be294d0 523 B text/x-c Show Annotation Show as Raw Download as Raw

bjarni

(svn r8621) -Codechange: assigned new numbers to the VEH_(type) enum so that VEH_Train is 0, VEH_Road is 1 and so on
This means that "v->type" can be used as array indexes instead of VehTypeToIndex() (or "v->type - VEH_Train/0x10 as the code still used in some places)
Surprisingly this can be done without changing the savegame format

/* $Id$ */

#ifndef ROAD_H
#define ROAD_H

#include "helpers.hpp"

typedef enum RoadBits {
	ROAD_NONE = 0U,
	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;

DECLARE_ENUM_AS_BIT_SET(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 */