Isn't this just what you covered in the "Shooting Rocks" post? Nevertheless, I'll be looking forward to learning how circles bounce off each other.

Wow! Thanks so much! I really appreciate it. MatheMagician, your new picture is awesome.

Not sure what you mean, but I'll that one sentence for many hours... Maybe I'll figure it out :) Thanks anyways! You blog is something I check everyday!

Great! A very simple example with the Pythagorean theorem. I also have a sort of request... In eclipse there are no handy methods like "move" and "turn", so could you post the maths behind rotating an image, like Greenfoot does?

I check whether the UserInfo is null or not every act, and if the UserInfo score is greater than the player's current score and a timer is greater than 50, it updates.