FWIW there's a Snoopy/Woodstock game on code.org that's a much simplified version of this where players control avatars who throw snowballs. It's turn based, each player programs their avatar with 6 different commands (IIRC, u d l r jump fire). Fun and very accessible for my 8yo and I.

Can't find it on CODE.org any more, it's mentioned here http://www.gameinformer.com/b/news/archive/2017/11/10/little....