Function MayHaveRoad

src/road_map.cpp:21–36

* Test whether a tile can have road/tram types. * @param t Tile to query. * @return true if tile can be queried about road/tram types. */

 * @return true if tile can be queried about road/tram types.
 */
bool MayHaveRoad(Tile t)
{
	switch (GetTileType(t)) {
		case MP_ROAD:
			return true;

		case MP_STATION:
			return IsAnyRoadStop(t);

		case MP_TUNNELBRIDGE:
			return GetTunnelBridgeTransportType(t) == TRANSPORT_ROAD;

		default:
			return false;
	}
}

/**
 * Returns the RoadBits on an arbitrary tile