public void setLevelSize(int width, int height)
	{
		if(tileGrid == null)
		{
			gridWidth = width;
			gridHeight = height;
			tileGrid = new Tile[height][width];
			for(int i = 0; i < height; i++)
			{
				tileGrid[i] = new Tile[width];
			}
		}
	}