A functional recursive version of the famous DOOM fire graphics algorithm.
This implementation is much slower than the original since it relies on imutable data structures only. I did this for fun and didn't want to use any advantages of OTP such as Genservers, Agents or anything that handles state. Just functions. There's definitely a lot of room for improvement so feel free to open a PR.
You need to have both erlang and elixir installed, the project itself has no dependencies.
To start, run:
iex -S mixDoomFire.lightTo have a flame 50 pixels wide (like the gif). You can also set the flame width as params:
DoomFire.light 80