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miham

(svn r12008) -Update: WebTranslator2 update to 2008-01-29 14:07:31
brazilian_portuguese - 5 fixed, 5 changed by fukumori (4), tucalipe (6)
bulgarian - 7 fixed by thetitan (7)
catalan - 1 fixed by arnaullv (1)
danish - 9 fixed by ThomasA (9)
dutch - 5 fixed by habell (5)
estonian - 7 fixed, 12 changed by kristjans (19)
french - 1 fixed by glx (1)
german - 6 fixed by moewe2 (6)
italian - 1 fixed by lorenzodv (1)
korean - 6 fixed, 11 changed by leejaeuk5 (17)
russian - 9 fixed by Smoky555 (9)
slovak - 7 fixed by lengyel (7)
slovenian - 7 fixed by Necrolyte (7)
swedish - 6 fixed by ChrillDeVille (6)
ukrainian - 7 fixed by mad (7)

/* $Id$ */

/** @file tunnel_map.h */

#ifndef TUNNEL_MAP_H
#define TUNNEL_MAP_H

#include "direction_func.h"
#include "rail_type.h"
#include "road_type.h"
#include "tile_map.h"


/**
 * Is this a tunnel (entrance)?
 * @param t the tile that might be a tunnel
 * @pre IsTileType(t, MP_TUNNELBRIDGE)
 * @return true if and only if this tile is a tunnel (entrance)
 */
static inline bool IsTunnel(TileIndex t)
{
	assert(IsTileType(t, MP_TUNNELBRIDGE));
	return !HasBit(_m[t].m5, 7);
}

/**
 * Is this a tunnel (entrance)?
 * @param t the tile that might be a tunnel
 * @return true if and only if this tile is a tunnel (entrance)
 */
static inline bool IsTunnelTile(TileIndex t)
{
	return IsTileType(t, MP_TUNNELBRIDGE) && IsTunnel(t);
}

TileIndex GetOtherTunnelEnd(TileIndex);
bool IsTunnelInWay(TileIndex, uint z);
bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir);

/**
 * Makes a road tunnel entrance
 * @param t the entrance of the tunnel
 * @param o the owner of the entrance
 * @param d the direction facing out of the tunnel
 * @param r the road type used in the tunnel
 */
static inline void MakeRoadTunnel(TileIndex t, Owner o, DiagDirection d, RoadTypes r)
{
	SetTileType(t, MP_TUNNELBRIDGE);
	SetTileOwner(t, o);
	_m[t].m2 = 0;
	_m[t].m3 = r;
	_m[t].m4 = 0;
	_m[t].m5 = TRANSPORT_ROAD << 2 | d;
}

/**
 * Makes a rail tunnel entrance
 * @param t the entrance of the tunnel
 * @param o the owner of the entrance
 * @param d the direction facing out of the tunnel
 * @param r the rail type used in the tunnel
 */
static inline void MakeRailTunnel(TileIndex t, Owner o, DiagDirection d, RailType r)
{
	SetTileType(t, MP_TUNNELBRIDGE);
	SetTileOwner(t, o);
	_m[t].m2 = 0;
	_m[t].m3 = r;
	_m[t].m4 = 0;
	_m[t].m5 = TRANSPORT_RAIL << 2 | d;
}

#endif /* TUNNEL_MAP_H */