He also helped to create a generation of people which modded and created forks of the engines he wrote to use in their own projects, providing the basis for tools to modify assets and whatnot.
I owe him so much and I thank him for what he enabled everyday.
I think a lot of people miss this. I grew up half a generation after him, so I got into computers by tinkering with Commodore Log, GWBasic and later C++/Allegro. But the next generation after that was of a huge amount of kids doing mods for Quake, Doom and the like. It opened the doors in an accessible way to computing for a lot of people.
