Function GetTileMaxZ

src/tile_map.cpp:136–149

* Get top height of the tile inside the map. * @param t Tile to compute height of * @return Maximum height of the tile */

 * @return Maximum height of the tile
 */
int GetTileMaxZ(TileIndex t)
{
	uint x1 = TileX(t);
	uint y1 = TileY(t);
	uint x2 = std::min(x1 + 1, Map::MaxX());
	uint y2 = std::min(y1 + 1, Map::MaxY());

	return std::max({
		TileHeight(t),              // N corner
		TileHeight(TileXY(x2, y1)), // W corner
		TileHeight(TileXY(x1, y2)), // E corner
		TileHeight(TileXY(x2, y2)), // S corner
	});
}