First attempt to use amazing library Toxiclibs, mushroom-like water creatures with big head and jumpy acts. Cursor is an attractor to pull them closer to each other. And it ends up with a beautiful mistake oops.
As you can see, the frame rate of it became super slow because I put addBehavior() in draw() instead of in setup(), or in the constructor of the class. If I didn’t have an office hour with Daniel Shiffman I’d never know! But after I rewrote my codes, having all of the adding-force stuff happen just once, my sketch became less interesting, as below.