Here's exactly what I'm trying to do, some of you may know what I'm copying here.
In short, I'm making a fangame for Danganronpa and I want to mimic the mechanics of Danganronpa V3's Rebuttal Showdown. Here's the reference:
In long, I want to get an object to move around in an elliptical shape. As you move the mouse, the object moves along the elliptical so that you constantly are on the same degree measurement. It never leaves this elliptical path.