Show HN: I implemented Pong as a cellular automaton
I'd been explaining sonic booms and high explosives to my kids, and thought that showing them a simulation of wavefront propagation might be a fun way to illustrate how they worked.  I figured I could do that with a simple cellular automaton, so I threw something together in a few hours, but my sim didn't have anything like the right behavior.  So there I was with a general cellular automaton framework, thinking about wave propagation, and wondering what else I could do with it. Inspiration struck, and I just had to try doing this.