tunnel_map.c
author glx
Mon, 24 Sep 2007 03:08:47 +0000
branch0.5
changeset 5545 f42dc59a45f5
parent 5513 0d3227e250eb
permissions -rw-r--r--
(svn r11153) [0.5] -Fix [FS#1251]: incorrect usage of {G} tag in slovak translation
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/* $Id$ */
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#include "stdafx.h"
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#include "openttd.h"
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#include "tile.h"
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#include "tunnel_map.h"
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TileIndex GetOtherTunnelEnd(TileIndex tile)
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{
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	DiagDirection dir = GetTunnelDirection(tile);
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	TileIndexDiff delta = TileOffsByDiagDir(dir);
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	uint z = GetTileZ(tile);
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	dir = ReverseDiagDir(dir);
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	do {
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		tile += delta;
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	} while (
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		!IsTunnelTile(tile) ||
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		GetTunnelDirection(tile) != dir ||
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		GetTileZ(tile) != z
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	);
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	return tile;
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}
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0d3227e250eb (svn r10280) [0.5] -Backport from trunk (r10109, r10219, r10222, r10230, r10246, r10258):
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bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir)
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{
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	TileIndexDiff delta = TileOffsByDiagDir(dir);
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	uint height;
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	do {
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		tile -= delta;
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		height = GetTileZ(tile);
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	} while (z < height);
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	return
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		z == height &&
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		IsTunnelTile(tile) &&
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		GetTunnelDirection(tile) == dir;
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}
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bool IsTunnelInWay(TileIndex tile, uint z)
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{
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	return
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		IsTunnelInWayDir(tile, z, DIAGDIR_NE) ||
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		IsTunnelInWayDir(tile, z, DIAGDIR_SE) ||
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		IsTunnelInWayDir(tile, z, DIAGDIR_SW) ||
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		IsTunnelInWayDir(tile, z, DIAGDIR_NW);
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}