Chameleon

  Write a class called Chameleon that extends the
   Critter class.  The instances of the Chameleon class cycle through three
   different ways of displaying themselves.  On their first move they should
   appear as a red R.  On their second move they should appear as a white W.
   On their third move they should appear as a blue B.  Then this pattern
   repeats itself (red R, white W, blue B, red R, white W, blue B, etc).  They
   should always infect on moves when they are red no matter what is in front
   of them.  On moves when they are white or blue, they should hop when they
   can and turn right when they can't hop.