https://tpoindex.github.io/crobots/
crobots is now FOSS opensource robot learning game for kids: gplv2 https://tpoindex.github.io/crobots/ from site: Documentation The original manual for CROBOTS is in docs/crobots_manual.html <https://tpoindex.github.io/crobots/docs/crobots_manual.html>. <https://tpoindex.github.io/crobots/#history>History CROBOTS was my first adventure into the world of compilers and virtual machines, and not all that long after I learned C. In early 1985, I found Jeff Lee's posting of a Yacc grammar for ANSI C, on the USENET group net.sources <https://groups.google.com/forum/#!search/net.sources%2420yacc%2420ansi%2420c/net.sources/3gmx4As0aSM/F--W3xnQlEsJ>. Taking Jeff's advice in his post *"(Y)ou can sit and crank your own output through it to amuse yourself if you have the personality of a cumquat(sp?)"*, I played with Yacc/Lex and the C grammar to the point of moderately understanding how it all worked.
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