src/road.h
author Darkvater
Sun, 18 Feb 2007 22:50:51 +0000
changeset 6400 7b98825c5cb0
parent 6335 0c3dc188f099
child 6268 4b5241e5dd10
permissions -rw-r--r--
(svn r8807) -Feature: Add support for loading (some of) the TTDP extra chunks mainly list of GRFIDs and TTDP version the game was saved with.
GRFID list is read and active GRFs are loaded with the game if present in the data/ directory.
TTDP versioning information only works for newer versions, old versions will only give rough information but it's not worth the effort to precisely figure out what bit means what where and when.
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/* $Id$ */
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#ifndef ROAD_H
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#define ROAD_H
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#include "helpers.hpp"
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typedef enum RoadBits {
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	ROAD_NONE = 0U,
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	ROAD_NW  = 1U,
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	ROAD_SW  = 2U,
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	ROAD_SE  = 4U,
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	ROAD_NE  = 8U,
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	ROAD_X   = ROAD_SW | ROAD_NE,
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	ROAD_Y   = ROAD_NW | ROAD_SE,
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	ROAD_ALL = ROAD_X  | ROAD_Y
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} RoadBits;
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DECLARE_ENUM_AS_BIT_SET(RoadBits);
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static inline RoadBits ComplementRoadBits(RoadBits r)
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{
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	return (RoadBits)(ROAD_ALL ^ r);
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}
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static inline RoadBits DiagDirToRoadBits(DiagDirection d)
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{
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	return (RoadBits)(1U << (3 ^ d));
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}
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/** Checks whether the trackdir means that we are reversing */
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static inline bool IsReversingRoadTrackdir(Trackdir dir)
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{
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	return (dir & 0x07) >= 6;
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}
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/** Checks whether the given trackdir is a straight road */
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static inline bool IsStraightRoadTrackdir(Trackdir dir)
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{
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	return (dir & 0x06) == 0;
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}
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#endif /* ROAD_H */