Assignment #1 - bouncy thing!

So, let's say you want to control a bouncy ball. Here are its characteristics:

• This ball moves diagonally in 1 pixel increments
  
• Once it hits an axis, its direction changes (for example if it goes down and right and hits the bottom border, it'll go up and right)
  
• The top and bottom border coords are (0,0) and (320,240)
  
• [edit]The ball moves on its own, no user interraction is required.[/edit]
  
• [edit]The ball initially starts at the middle of the screen and moves down-left.[/edit]

Task #1 - Provide code to control the ball
Task #2 (optional) - Assume that the borders aren't fixed and can vary. Change Task #1's code to reflect this change
Task #3 (optional) - Modify the Downfall source so it'll show that ball

That is all. Have fun, and again, everyone that wants to have a shot at this is very welcome to, not just Sauron :)