Made it to the Finish Line

Well, today was spent implementing interaction.
There were a few minor pitfalls like the difference between Common Lisp's notion of ELT and Interlisp's. I didn't realize that you get a tail list back with the first element being what you asked for. Once I remembered that little detail I slapped a CAR on and fixed the hour long bug.

The ring selection code is kind of interesting, rather than using collision detection with circles it looks at the angle from the center of the screen the mouse resides and at selects the ring that way. This prevents a mouse being technically inside 2 or 3 rings at once and is usually seamless to the player who just assume he or she needs to simply click inside the rings.

I'll hold off on my submissons for now and want to spend a day putting a bit more polish on it and smoothing out the rough edges. (Don't resize the window please!).