https://medium.com/hri-tech/custom-hovercraft-physics-271d4d2f3bf6

For a game controlled via a giant custom Trackball and anything else really

One of the projects at my University is referred to as the “marmalades”, because for 8 weeks we have to create three games, one of which always has to be with a custom physical controller. We decided on a racing game being controlled by a physical trackball, and later on, I pitched the idea to convert this into a 2 player game, one person controls the acceleration and direction, the other the balance of the vehicle. The idea was well received and the prototype was immediately fun to play around with, so the programmers delved into Arduino, gyroscope sensors and a big trackball, while I created the hovercraft physics and synced the gyroscope’s absolute rotation, to the balance of the hovercraft vehicle inside Unreal, the hovercraft physics, although rudimentary, was perfect for this project, and ultimately gave the game its identity.