refactor crosshair into its own method, cleaner.
world render doesn't need a pointer to the player..

i wasn't thinking when i did that, clearly.
set player phys box size properly.
set player foot sensor to a better size

rm dead code
cleanup
clear out the player spawn position of tiles
create 1 tile physics static body object @ player position

now i just need to create some all around the player's viewport,
only for initial creation.

updates (creation and destroys upon movement) is a whole other ballgame