Subtile management is the term I use to refer to squares that are divided up into four different "subtiles" using objects. That way, it's as if the whole game were run using 16x16 tiles instead of 32x32 tiles, because each tile contains 4 subtiles. Now, I know a few games that use this (Minesweeper and Fourtris for example), and I'm wondering if anyone has thought up some nifty ways to organize this.

My current system isn't one I'm too happy with. Basically, each turf has four variables, room1, room2, room3 and room4, which it uses to refer to the subtiles contained within itself. At turf/New(), each of those variables becomes a new subtile, which then gets its pixel_x/y modified so that it fits into the turf properly. Each subtile is then given a proper tag based on it's location inside the turf. Something like this:

tag = "[(turf.x*2)+1],[(turf.y*2)]"

...which basically allows it to work like a normal grid coordinates using tags. Each subtile is also given new X and Y coordinates, so they can find the subtile north of them using their coordinates, with +1 to the Y. Basically locate("[X],[Y+1]") would return north from that subtile.

All in all though, it tends to be rather ugly. I'm wondering if anyone else has thought up some colorful ways to organize subtiles. Or if you just want to share the way you organize them, they'd be good too.