src/tunnelbridge.h
author belugas
Tue, 04 Mar 2008 17:07:33 +0000
changeset 9168 a35d94d8501c
parent 8894 1e5b2d4380b8
child 10233 c08376c16fb2
permissions -rw-r--r--
(svn r12337) -Change: update some documentation.
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/* $Id$ */
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/** @file tunnelbridge.h Header file for things common for tunnels and bridges */
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#ifndef TUNNELBRIDGE_H
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#define TUNNELBRIDGE_H
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#include "tile_type.h"
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#include "map_func.h"
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#include "tunnelbridge_map.h"
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/**
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 * Calculates the length of a tunnel or a bridge (without end tiles)
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 * @return length of bridge/tunnel middle
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 */
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static inline uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
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{
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	int x1 = TileX(begin);
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	int y1 = TileY(begin);
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	int x2 = TileX(end);
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	int y2 = TileY(end);
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	return abs(x2 + y2 - x1 - y1) - 1;
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}
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#endif /* TUNNELBRIDGE_H */