public Tile[][] setAreaUnavailable(Tile[][] grid, Rectangle area)
	{
		if (area.x >= 0 && area.y >= 0 && area.width < grid.length && area.height < grid[0].length)
		{
			for (int i = area.x; i < area.width; i++)
			{
				for (int j = area.y; j < area.height; j++)
				{
					grid[i][j].setAvailable(false);
				}
			}
		}
		return copyGrid(grid);
	}