So cool, you did it! crazy shorthand stuff going on in your code, I'd be interested in a commented version :)
Viewing post in srviv jam comments
I've added some comments to explain things a bit, though function and variable names are still obscure:
https://gist.github.com/kozm0naut/2bed76ff9f57133b44569eb766fc1fea#file-srviv-p8
Let me know if you have any questions!