Fucked with Seamless tiles

//it turns out the backgrounds are pretty annoying
but I think with some time I can get a system working...
//depth is all fucked up. There is no reason the sprite should be
walking under tiles that are at 999999 depth. We should be somewhere
around like 50 or something, but also...
//I wrote a script before that made depth the y*2 so the sprites can
automatically walk behind buildings. We need to standardize those
numbers and stick to them.