Alright. The first thing I want you to do is the following:
(1) remove the 'setSpeed' line from your world constructor
(2) move the scenario speed slider to around the middle
After that, you should notice that Walter will show up in different places for about 10 seconds at each location. However, finding Walter can be very difficult; as he is camouflaged within your background image (but you should notice Walter changing locations if you are patient and watch closely).
