Back in the early/mid 2000s I was involved with the PK Hack community, which was/is a group of people who focus on reverse engineering the EarthBound ROM (documenting and building editors for it, etc). I remember a guy named Flynman was actually putting together a sort of EarthBound scripting language that compiled down into the text engine's control codes. I'm not sure if that ever led anywhere, but it sounded pretty cool at the time. I might dig around to see if I can find it somewhere on the Starmen.net forums

edit: the original was called CCBasic, but I guess someone took the concept and reworked it here: https://forum.starmen.net/forum/Community/PKHack/CCScript-A-...

and the language docs: http://starmen.net/pkhack/ccscript/Tutorial.html