Revert "simplify the sprite draw function (less math, less cpu cycles) !"
Revert "simplify the sprite draw function (less math, less cpu cycles) !"

This reverts commit c30e386a387bfd44e329d23f91e93998c3ce4320.

melonjs/melonJS,melonjs/melonJS,rlugojr/melonJS,rlugojr/melonJS,rlugojr/melonJS