Removing those items from the map generation and from the quests is my current goal, but I don't know how to do that or where to start. I can change the text in the interaction menus so that the Chieftan asks for "plants of feeding" (wheat) instead of "plants of joy" (hemp leaf), but I don't know how to modify the scripts.
I need to know how to do two things:
1. How do I modify that Adventure map to remove those specific items from the fetch quest?
2. How do I change Random Island mode so it doesn't generare Hemp plants?
Don't worry, my mod will change a whole lot more than this, but this is my only roadblock so far.