If I was making a simple “Doom Clone”

Question

If I was making a simple “Doom Clone” and I wanted to limit the controls to up=forward, down=backward, left=strafe left, right=strafe right, what would the code look like in C?

Answer 1

I saw one a couple of days ago, but in java. if I find it tomorrow I post it

Answer 2

Here:

https://www.instructables.com/id/Making-a-Basic-3D-Engine-in-Java/

It's not a doom clone, but it's just a matter of textures