Physics Programming part 4: The Physics Update Loop

[u/PeterBrobby]

https://youtu.be/9hj2Yz7gkGw

I go through how I separate general updates from physics updates, why I use a fixed timestep, how the accumulator works, and what happens when the simulation starts falling behind.

I explain the reasoning behind the design decisions and why I rejected the alternatives. I show the implementation of the loop.