(svn r11940) -Codechange: Store short filename once per open file instead of once per sprite cache entry. Not all file types need this, but most of the time no sprite cache entry needed it either.
/* $Id$ */
/** @file tunnelbridge_map.h Functions that have tunnels and bridges in common */
#ifndef TUNNELBRIDGE_MAP_H
#define TUNNELBRIDGE_MAP_H
#include "direction_func.h"
#include "core/bitmath_func.hpp"
#include "tile_map.h"
#include "bridge_map.h"
#include "tunnel_map.h"
/**
* Tunnel: Get the direction facing out of the tunnel
* Bridge: Get the direction pointing onto the bridge
* @param t The tile to analyze
* @pre IsTileType(t, MP_TUNNELBRIDGE)
* @return the above mentionned direction
*/
static inline DiagDirection GetTunnelBridgeDirection(TileIndex t)
{
assert(IsTileType(t, MP_TUNNELBRIDGE));
return (DiagDirection)GB(_m[t].m5, 0, 2);
}
/**
* Tunnel: Get the transport type of the tunnel (road or rail)
* Bridge: Get the transport type of the bridge's ramp
* @param t The tile to analyze
* @pre IsTileType(t, MP_TUNNELBRIDGE)
* @return the transport type in the tunnel/bridge
*/
static inline TransportType GetTunnelBridgeTransportType(TileIndex t)
{
assert(IsTileType(t, MP_TUNNELBRIDGE));
return (TransportType)GB(_m[t].m5, 2, 2);
}
/**
* Tunnel: Is this tunnel entrance in a snowy or desert area?
* Bridge: Does the bridge ramp lie in a snow or desert area?
* @param t The tile to analyze
* @pre IsTileType(t, MP_TUNNELBRIDGE)
* @return true if and only if the tile is in a snowy/desert area
*/
static inline bool HasTunnelBridgeSnowOrDesert(TileIndex t)
{
assert(IsTileType(t, MP_TUNNELBRIDGE));
return HasBit(_m[t].m4, 7);
}
/**
* Tunnel: Places this tunnel entrance in a snowy or desert area, or takes it out of there.
* Bridge: Sets whether the bridge ramp lies in a snow or desert area.
* @param t the tunnel entrance / bridge ramp tile
* @param snow_or_desert is the entrance/ramp in snow or desert (true), when
* not in snow and not in desert false
* @pre IsTileType(t, MP_TUNNELBRIDGE)
*/
static inline void SetTunnelBridgeSnowOrDesert(TileIndex t, bool snow_or_desert)
{
assert(IsTileType(t, MP_TUNNELBRIDGE));
SB(_m[t].m4, 7, 1, snow_or_desert);
}
/**
* Determines type of the wormhole and returns its other end
* @param t one end
* @pre IsTileType(t, MP_TUNNELBRIDGE)
* @return other end
*/
static inline TileIndex GetOtherTunnelBridgeEnd(TileIndex t)
{
assert(IsTileType(t, MP_TUNNELBRIDGE));
return IsTunnel(t) ? GetOtherTunnelEnd(t) : GetOtherBridgeEnd(t);
}
#endif /* TUNNELBRIDGE_MAP_H */