Hmm.
Seems to work so far, one more problem.
When it's zoomed in, the tiles are like, huge.
I made a 8*8 tileset and tried to fix the problem, only got worse.
The tiles now don't show correctly, but the collision groups are there.
Exactly what happens when you use two tilesets of different dimensions in one game, but I made sure there's only one here.
Now what?
Is there a way to make a tile, like, smaller?