Function DistanceFromEdge

src/map.cpp:229–238

* Param the minimum distance to an edge * @param tile the tile to get the distance from * @return the distance from the edge in tiles */

 * @return the distance from the edge in tiles
 */
uint DistanceFromEdge(TileIndex tile)
{
	const uint xl = TileX(tile);
	const uint yl = TileY(tile);
	const uint xh = Map::SizeX() - 1 - xl;
	const uint yh = Map::SizeY() - 1 - yl;
	const uint minl = std::min(xl, yl);
	const uint minh = std::min(xh, yh);
	return std::min(minl, minh);
}

/**
 * Gets the distance to the edge of the map in given direction.