Pushing just for the sake of updating progress.

There seems to be a bug, that I've had before. It's an undefined error.
:s
wth.
I remembered the bug

It's kinda weird using a system of callbacks, and it can be confusing a
lot. This is a WIP folks.
renamed the overworld file. rendered an overworld.

Ignore the fact that it is not where it belongs. It's okay. ish. for
now.
No bugs outside of overworld positioning, which can be worked out with
better camera maths.