Allow users of the mod to create sanity checks like “furnace in tier 2” and “furnace recipes in tier 3” or “steel in tier 4” after “blast furnace in tier 3”.
it's easy to specify recipe types to be locked to a particular tier (you already can, even); but saying "this item must be part of tier xx" is a little harder. i'll see
Method that checks all items required for a tier and adds them to the list “toAddRecipesFor”
Method that adds items required for a tier and adds them to lists for all the other tiers called “bannedForTier” and add that to the “chooseItem” method.
Allow users of the mod to create sanity checks like “furnace in tier 2” and “furnace recipes in tier 3” or “steel in tier 4” after “blast furnace in tier 3”.
(Consolidating ideas from the thread)