xray-16 VS Allegro

Since you are on linux, someone remade the engine and there is a native port of it https://github.com/OpenXRay/xray-16 It works with luxtorpeda if you have the game on steam or know how to add a non Steam game and give it the id of the game then choose luxtorpeda as a compatibility tool

Yes. It's a based on a fork from Open X-ray.

So knowing that I can play Stalker COP with the use of OpenXRay/xray-16, I started searching for Anomaly engine source code.

Here, Xray 1.6, no need for scammy links

In the future it may be worth checking out OpenXray too - https://github.com/OpenXRay/xray-16

Allegro (zlib/plain C) https://github.com/liballeg/allegro5

Some nutjob has taken control of https://liballeg.org to redirect it to some anti-Nazi page that mentions Kotaku, comparing them to nazis.

C, C++, Allegro, SDL, Some rudimentary SQL, Some basic BSD Sockets. But I also took some time to learn 3D math, trigonometry and linear algebra so I can include some basic 3D examples in my portfolio. I was later told that it was the 3D math that made the difference because if I (barely finished HS) can do that I can probably learn everything they give me.

Wow, DJGPP and Allegro (still going!), that takes me back - that and Bloodshed IDE were my weapons of choice back then!

liballeg.org

allegro 5 is quite alright with fonts

allegro5 is a great rendering library if you want to get something 2D on the screen fast

Hell, their website says in the first few sentences it isn't an engine.

A while ago I was getting started with the Allegro5 game engine (+Rust bindings). It's the same engine used for Factorio. I wrote a simple egui-integration to have nicer UI options. It was mostly for myself and is thus poorly documented but maybe you get some ideas how to make it work.

Here's a simple program using Allegro