So if I wanted to make a huge tilemap that was around 90*90 tiles (and the tiles are 8*8 pixels big), I would have to chop it up into multiple pieces because it can't all fit into one list. I know I can create 9 appvar and constantly update the list with the correct map tiles, but how would i figure out if a player is on the edge of a appvar (when the appvar touch each other) and when to use at least two different appvar with only a chunk/line of code that i can use no matter how big the tilemap is?