Your program will have at least two balls that bounce off the edges of the screen

• They should properly reflect at the correct angle

• They can phase through each other - don't worry about collisions

Each ball should...

• Start at a different location on the screen

• Have a different xSpeed and ySpeed
  

Progression Advice

• Draw a single stationary ball

• Make the ball move

• Make the ball bounce off the edge

• Repeat with a second ball

Wait, but how do I make the ball bounce?

• Read Coder's Handbook - Animation carefully. If you want more help, look at Shiffman's bouncing ball example linked on that page.

Is there a way to do this program without repeating so much code?

• Yes - but it's beyond your powers right now. We'll come back to this!

I know it's not required, but ... how do I make the balls hit each other?

• You'll need to see if one ball is inside of the other one. You have their x positions and y positions, as well as their sizes. If one ball is within another's radius....