Hello. Thank you for your interest in my project.
I made this game from scratch in Unity and C#. Of course, I used a lot of googling to figure out how to do some things, but no, I didn't use any of Doom's original code.
Most of the knowledge I used to make this came from an online course I followed, where one of the projects we worked on was a FPS.
I hope that answered your question. :)
Awesome!
My suggestion is to start by copying a simple game you like (snake, angry birds, space invaders, a simple platformer, etc.) to get used to the tools and learn the gamemaking process.
The key is getting experience little by little with multiple completed small projects. Going through all the process until the finished, playable game is very rewarding and a great learning experience.
The course I followed to learn Unity at gamedev.tv was great because of that. Lots of small projects to learn the different concepts and tools. And I just saw they have a 95% discount on course bundles right now. It's a great chance to start your game making journey!
