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miham

(svn r9054) -Update: WebTranslator2 update to 2007-03-07 18:39:14
catalan - 2 fixed by arnaullv (2)
croatian - 95 fixed, 34 changed by Ydobon (129)
czech - 1 fixed, 3 deleted, 109 changed by Hadez (113)
danish - 4 fixed by ThomasA (4)
dutch - 2 fixed by habell (2)
esperanto - 5 fixed by LaPingvino (5)
french - 2 fixed by glx (2)
german - 1 fixed by Neonox (1)
hungarian - 1 fixed by miham (1)
italian - 1 fixed by sidew (1)
japanese - 14 fixed by ickoonite (14)
korean - 9 fixed by Nios (9)
norwegian_nynorsk - 1 fixed by Eikje3 (1)
polish - 2 fixed by meush (2)
simplified_chinese - 5 fixed by Fishingsnow (5)
slovenian - 1 fixed by Necrolyte (1)
spanish - 5 fixed by eusebio (5)
swedish - 5 fixed by daishan (5)
traditional_chinese - 7 fixed by sam0737 (7)
ukrainian - 1 fixed by znikoz (1)

/* $Id$ */

/** @file bridge_map.cpp */

#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "variables.h"


TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
{
	TileIndexDiff delta = TileOffsByDiagDir(dir);

	dir = ReverseDiagDir(dir);
	do {
		tile += delta;
	} while (!IsBridgeTile(tile) || GetBridgeRampDirection(tile) != dir);

	return tile;
}


TileIndex GetNorthernBridgeEnd(TileIndex t)
{
	return GetBridgeEnd(t, ReverseDiagDir(AxisToDiagDir(GetBridgeAxis(t))));
}


TileIndex GetSouthernBridgeEnd(TileIndex t)
{
	return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
}


TileIndex GetOtherBridgeEnd(TileIndex tile)
{
	assert(IsBridgeTile(tile));
	return GetBridgeEnd(tile, GetBridgeRampDirection(tile));
}

uint GetBridgeHeight(TileIndex t)
{
	uint h;
	Slope tileh = GetTileSlope(t, &h);
	uint f = GetBridgeFoundation(tileh, DiagDirToAxis(GetBridgeRampDirection(t)));

	/* one height level extra if the ramp is on a flat foundation */
	return
		h + TILE_HEIGHT +
		(IS_INT_INSIDE(f, 1, 15) ? TILE_HEIGHT : 0) +
		(IsSteepSlope(tileh) ? TILE_HEIGHT : 0);
}