Thank you!! I'm a pretty new coder so my apologies if I'm not wording this right -- basically for the compass I just defined a different transformation for each direction I wanted it to point ("left", "right", etc), put a couple different rotations under each definition so that the arrow would never be still, and then called those defined transformations for each different scene. The circle in the back of the arrow was a separate image so that the arrow could move by itself.
Thanks for playing!