greeting Prof Hwang!

i been trying to remix this applet, with some success. :) check out the attachment or http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1455msg5504;topicseen#msg5504

I have 2 (modeling) problems i want to add into the simulation.

1. collisions between particles ( current model is missing this, only collision with walls)
2. some way to show Maxwell distribution of speeds like http://www.chm.davidson.edu/vce/kineticmoleculartheory/Maxwell.html

chance to work on my attachment http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=632.0;attach=1736 below and build on each other's effort to make a fantastic Ideal Gas Model based on Kinetic Theory of Gas applet jointly?  ;D

1 and 2 seems a bit difficult for me, thanks for your consideration and let me know how should i progress.