Yes I extracted the physics engine from Ms flight simulator 3.0 (C) and ported it into my own project (rust) in Ghidra as a complete novice from having never opened the app to working code in rust in just over three hours. It helped a lot that I have previous experience with writing my own similar software so I knew what to start looking for, and also Ms fs 3.0 is only about 9500 loc, much of it is graphics.

But yeah codex will totally hold your hand and teach you Ghidra if you have a few hours to spare and the barest grasp of assembly