if tile.properties.solid == true and tile.x >= (etc..)
but I can't pull the tile.x or tile.y coordinates from the class.
How do I grab the tile coordinates.. or is there a better way of handling collision using ATL?
I'm not entirely sure I understand the problem, could you attach a .love file? If the problem is finding a certain tile's x,y coordinates, couldn't you iterate through a loop in a load function and use that as the "map coordinates" for your collision reference?