Create a simple Alice world to fly a pterodactyl instead of a plane. There is a pterodactyl in the Animals folder in the Local Gallery. You could build a method to flap its wings, and then use this as an event handler for an event while the world is in motion. Do the wings need to turn or roll? Should they go up and then down, or down and then up? How far should they move? You should experiment with the pterodactyl and then develop specifications before coding your world.