This is the more polished demo I would have liked to put out there sooner for this: https://scratch.mit.edu/projects/10118003/ Instructions are inside. Fullscreen is best. Enjoy! P.S. @Failord is my original Scratch account. P.P.S. If you are using the improved code and take the mouse outside the window, it doesn't work very well. It could be easily fixed with some if statements, but leaving it this way keeps the code simple and illustrates the need for careful adaptation of the code to the environment it will be used in.
