src/tunnelbridge.h
author rubidium
Thu, 18 Dec 2008 12:23:08 +0000
changeset 10436 8d3a9fbe8f19
parent 8973 749e572f9378
permissions -rw-r--r--
(svn r14689) -Change: make configure die on commonly made user mistakes, like not having SDL development files or zlib headers installed; you can still compile a dedicated server or a binary without zlib, but you have to explicitly force it.
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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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/**
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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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extern TileIndex _build_tunnel_endtile;
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#endif /* TUNNELBRIDGE_H */