Flappy Ball

Floaty Ball, or Flappy Ball as the intro screen calls it, was a game included as an example in early versions of the Arduboy library. It was removed because it was virtually unplayable, due to the speed that the ball moved.

I’ve taken some time to clean it up a bit and fiddled with the rise and fall speed of the ball, to make it easier to play (maybe too easy?). I renamed it from FloatyBall to FlappyBall, to match the intro screen.