cool game - I would buy a full version on Steam! couple of ideas:
- instead of programming robots you should make 'jobs' and assign the robots to jobs as this would cut down on script maintenance!
- I don't use fire pits as they require coal and simple flames are free forever; you probably need 'ice levels'; higher ice levels can only be melted by stronger flames; or you can make fire pits revert to lower heat when not maintained
- add a checkbox "2x" to most nodes meaning a robot would pick up, eat, drop up to 2 items
- don't know if that was a bug or not but scripts should automatically trigger idle / restart if they are done; I currently have to build a main loop in idle and revert back to idle after 'low battery'