help='Print to terminal')
parser.add_argument('--png',
metavar="FILE",
help='Output maze as a PNG to FILE')
args = parser.parse_args()
if args.djikstra:
grid = DistanceGrid(args.rows, args.cols)
else:
grid = grid.Grid(args.rows, args.cols)
maze = None
if args.algo == "tree":
maze = BinaryTree().on(grid)
elif args.algo == "sidewinder":
maze = Sidewinder().on(grid)
if args.djikstra:
start = grid[grid.rows - 1, 0]
distances = start.distances()
maze.distances = distances
if args.path:
maze.distances = distances.path_to(grid[0, grid.columns - 1])
if args.ascii:
print(maze.ascii())
if args.png:
maze.to_png(args.png)
