AisleRiot: two new games

[Zachary Keene <zjkeene bellsouth net>]

Perpetual Motion:
http://www.geocities.com/arcanelore2001/sol/perpetual_motion.scm

  This is a really stupid game, but it seemed like a good place to 
start since I've never messed with Scheme anywhere before, much less 
AisleRiot. All you do is deal four cards at a time, and move any cards 
with the same rank on top of the leftmost card of that rank. Should you 
deal four cards of the same rank, double click to discard all four. If 
you discard the entire deck you win.

Gaps:
http://www.geocities.com/arcanelore2001/sol/gaps.scm

  Deal the entire deck into four rows of 13 cards, then remove the 
aces. Any gaps in the first column may be filled in by moving a two 
there. Any other gap can only be filled with a card having the same suit 
as the card to the left of the gap but one rank higher. Gaps to the 
right of kings (or other gaps) cannot be filled. Redeals are 
accomplished by picking up any cards not in sequence with a two at the 
far left, shuffling them, then redealing them (leaving one space after 
each row of sequenced cards.)

  Unfortunately one bug I haven't been able to shake out of this is 
that undo/redo don't seem to correctly save the "rows" vector, which 
keeps track of which cards aren't in sequence, which can lead to 
out-of-sequence cards getting stuck if you fiddle with undo. I did use 
the def-save-var macro, but I'm not sure what else to try.

--
Zach Keene