The Performance Update — Celestial Golf Steam update #41430

A minor update to the demo, but it contains major performance improvements, particularly on low-end hardware. (My old laptop is much happier after this update!)Performance updateTrajectory computation: impact with distant bodies (any body other than the current sphere of influence) is now estimated based on a circular radius, rather than calculated precisely. This should speed up all trajectory calculations. Note that the "impact" on distant bodies is now slightly imprecise, but gets recalculated when the ball gets close to that body.Body surfaces are now loaded on-demand (as the ball transitions between spheres of influence) in the background, rather than all at once when a level loads. This should drastically improve load time, GPU memory usage, and general framerate. However, there could be a slight stutter when the ball changes between spheres of influence as it has to load from disk...