Body:setBullet
Set the bullet status of a body.
There are two methods to check for body collisions: at their location when the world is updated (default) using continuous collision detection (CCD)
The default method is efficient, but a body moving very quickly may sometimes jump over another body without producing a collision. A body that is set as a bullet will use CCD. This is less efficient, but is guaranteed not to jump when moving quickly.
Note that static bodies (with zero mass) a