Challenge: Mouse stalker
Make a mover accelerate based on how close the mouse is.

Start with some vector math

Hint

var maxDir = ;
var maxMag = ;

This is the mover program, where the circle accelerates towards the mouse.
We want you to make it so that it accelerates faster when the mouse is closer, and slower when the mouse is farther. To start off with, do
some vector math to figure out the magnitude of the biggest possible direction vector, which we could compare our current direction vector to. (Think about it this way: what is the farthest your mouse could be
away from the circle?)