initial version

depends.txt

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+craftguide
+doc_items

init.lua

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+local reg_items = minetest.registered_items
+
+local function item_has_groups(item_groups, groups)
+	for i = 1, #groups do
+		local group = groups[i]
+		if not item_groups[group] then
+			return
+		end
+	end
+	return true
+end
+
+local function revealed_show_recipe(recipe, playername)
+	local revealed = doc.data.players[playername].stored_data.revealed
+	for _, item in pairs(recipe.items) do
+		local is_revealed_item
+		if item:sub(1,6) == "group:" then
+			local groups = item:sub(7):split(",")
+			for cid, items in pairs(revealed) do
+				for item in pairs(items) do
+					if item_has_groups(reg_items[item].groups, groups) then
+						is_revealed_item = true
+					end
+				end
+			end
+		else
+			for cid, items in pairs(revealed) do
+				if items[item] then
+					is_revealed_item = true
+				end
+			end
+		end
+
+		if not is_revealed_item then
+			return
+		end
+	end
+	return true
+end
+
+
+function craftguide.progressive_filter_recipes(recipes, player)
+	local filtered = {}
+	for i = 1, #recipes do
+		local recipe = recipes[i]
+		if revealed_show_recipe(recipe, player:get_player_name()) then
+			filtered[#filtered + 1] = recipe
+		end
+	end
+	return filtered
+end