[pygame] Not sure what to call this.

[Lamonte Harris]

Basically lets give a real live example.  When your standing up and you move
your arm at an diagonal the socket of the bone doesn't move but your arm
does, lets put this back to pygame.  How would Say if K have a simple sprite
that has 2 parts body,1 arm.  How would say if that sprite is in the middle
of the screen don't move but when I move the mouse the arm points in the
direction of where the mouse is located, but doesn't exactly move to that
position, how would that exactly work?