I have a homework till today 12 i need to make a circle change shape when it hits the wall and a circle that bounces of walls
Hi @parichko,
Please read the guidelines for asking about homework 
Programming is first describing your needs then answering those problems with code so in your case try to ask yourself the following questions:
- How to make a circle shape?
- How to make that circle move?
- How to change the shape of a circle when an event is triggered?
- How do I detect the intersection of a circle an a wall?
- How do I modify the trajectory of the circle so that when it touches a wall it bounces?
Gradually solving those questions will lead you to the final program and this is the process of software engineering! 