1982 is calling but expects to be connected to some HN pedant "helpfully" pointing out that you can't actually shoot stuff.
Good intro to raycasting for those interested: https://lodev.org/cgtutor/raycasting.html
https://moegamer.net/2019/03/05/atari-a-to-z-capture-the-fla...
Like him otherwise, but nope he didn't invent it...
All those LucasArts games were stunning for the time and Rescue At Fractalus has a genuinely terrifying experience within it not replicated IMO until the first time you hear "Anytime..." in Alien vs Predator...