Should we enforce unsignedness more strictly?

[fridtjof]

There are various places (example: matrix_getx, matrix_gety, sdl_event_break in out_sdl2.c) where an int is used instead of a uint.
Should we make variables strictly unsigned where it makes sense, or is allowed by all uses of that variable?
Of course, I'm only suggesting this because CLion told me to. :D

[vifino]

Yeah, it should be unsigned for the most part.
The issue with that is that math is a bit iffy, you're bound to underflow when calculating things.
So some things still rely on signed positions.
But other than that, the default should be unsigned.