nearly there at creating initial tile objects
make the physics debug renderer slightly transparent, for good debugging
set tile size/positions better.
render the entities offset by half the size of it, because box2d

handles position in center points and I did not.
render GUI on top of the phys debug renderer
fix crosshair rendering to offset by the sprite's origin.

i'm getting the feeling this is going to start becoming problematic,
because box2d uses origin at center and i'm trying to compensate for it
by also using origin at center. But in some cases that means having to
compensate *the other way* to place something where you want.
a minor, yet shockingly big fix in physics/rendering handling

before, we were updating the entities, then the box2d world

so now the physics debug rendere doesn't look like it's a frame behind
attempt to fix that some more..