Simple SLAP player

This is a player for the SLAP scripting language
Right now its reading this script from a file.
Source code for the player is here and a supporting arithmetic evalutation library (written by Esther Iserovich).
You can try to write your own script (its easier to use some defines from the script above) and submit it using the button below. The polly scene should reset, and play your script.
New feature for assignment 3 :
You can choose the polly actor you want to follow. It will be highlighted, and you will get a real-time display of your script code being executed.
This demonstrates each polly's "script" and lets the user see the instructions as they are exectued.
(Also, many bugs have been fixed -- with scenes now re-initializing correctly, ghost polly's being removed, etc.)