> I knew guys in the late 90s who built their own 3D engines, knew quaternion geometry, how to mix, reverberate and filter multi-channel audio in C++. That gam

> I knew guys in the late 90s who built their own 3D engines, knew quaternion geometry, how to mix, reverberate and filter multi-channel audio in C++. That game had a 3D engine I wrote from scratch in two weeks (the game suddenly changed from 2D to 3D overnight), and it had a multi-channel audio engine I wrote in C++ that was way over the top for the game's need and I shaved a whole yak there.