Help for Analys a program

[mekalam]

hi,a few week ago i downloaded java maze 3d applet from this site.
this game was very good.i mean i really like java's game.
so i tryed to analyze the source code.i did it good but when i
reached to "paintscreen" class,i can't understand how this class
and methods are working.
i tryed so much but i get a little from the class.
can someone please tell me how this class is working
or what are doing the methods.
please answer me.
thanks.
here is the link : http://javaboutique.internet.com/3DMaze/

[Hack]

Welcome to DevX

Post the code for the paintscreen class that you have questions on.