src/bridge_map.cpp
author rubidium
Fri, 28 Mar 2008 19:01:57 +0000
branch0.6
changeset 9353 1127b484af20
parent 8579 3efbb430092e
permissions -rw-r--r--
(svn r12478) [0.6] -Backport from trunk (12477, 12453, 12448, 12443, 12439, 12417):
- Fix: Timetable times for aircraft were always doubled [FS#1883] (r12477)
- Fix: Remove broken endian-dependent code and unnecessary rgb to bgr swapping [FS#1880] (r12453)
- Change: Unify RPM spec files (r12448)
- Add: OpenTTD's version to the config file to 'ease' getting the correct version on bugreports (r12443)
- Fix: Do not 'disable' the drawing of autorail overlays when the tile is 'error'-marked (red pulsating selection) [FS#1871] (r12439)
- Fix: Plural rule for Icelandic was wrong (r12417)
/* $Id$ */

/** @file bridge_map.cpp Map accessor functions for bridges. */

#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "bridge.h"
#include "variables.h"
#include "landscape.h"
#include "tunnelbridge_map.h"


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

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

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

	/* one height level extra for the ramp */
	return h + TILE_HEIGHT + ApplyFoundationToSlope(f, &tileh);
}