Physics Ball

I made this because I was bored. I like it, so its good. You will enjoy it, probably. There may be bugs; I will probably not fix them. Use the code however, but if you do give me some credit or whatever.

Instructions:

Grab the ball on touchscreen and throw it. Easy-Peasy. Use the stick to change radius of ball. Hold L for ball tracking. Hold ZL for position tracking. Go into code and mess with the variables. MX and MY are maximum values, XV is x-velocity, radius is radius etc.