craft emc work except for groups

equivalent_exchange/emcs.lua

@@ -41,7 +41,10 @@ local emcs = {
 		mese_crystal = 425,
 		-- Precise Value: 848
 		diamond = 976,
-		obsidian = 
+
+		-- REDO VALUE HERE
+		obsidian = 0,
+
 		nyancat = 3786750,
 		nyancat_rainbow = 3786750,
 	-- Exceptions --
@@ -51,8 +54,10 @@ local emcs = {
 		stick = 1,
 	},
 	["bucket"] = {
-		bucket_water = 275, 
-		bucket_lava = 
+		bucket_water = 275,
+
+		-- REDO VALUE HERE
+		bucket_lava = 0,
 	},
 	["farming"] = {
 		seed_wheat = 20,
@@ -71,12 +76,82 @@ local emcs = {
 		viola = 5,
 	},
 }
-
+ 
+-- Add all items to a table.
+local registered_items = {}
+local local_emcs = {}
+	 
+for itemname, value in pairs(minetest.registered_items) do
+      table.insert(registered_items, itemname)
+end
+ 
+-- Add EMC values to raw materials.
 for modname, itemlist in pairs(emcs) do
-	for itemname, emcvalue in pairs(itemlist) do
-		minetest.override_item(modname..":"..itemname, {
-			description = minetest.registered_items[modname..":"..itemname].description.."\nEMC Value: "..emcvalue,
-		    emc = emcvalue,
+        for itemname, emcvalue in pairs(itemlist) do
+                minetest.override_item(modname..":"..itemname, {
+                    description = minetest.registered_items[modname..":"..itemname].description.."\nEMC Value: "..emcvalue,
+                    emc = emcvalue,
+                })             
+        end
+end
+
+for i=1,10 do
+	for _, itemname in pairs(registered_items) do
+		if itemname ~= ""
+		  and itemname ~= ":"
+		  and minetest.get_all_craft_recipes(itemname) ~= nil
+		  and minetest.registered_items[itemname]
+		  and minetest.registered_items[itemname].emc == nil then
+
+			for _, recipe in pairs(minetest.get_all_craft_recipes(itemname)) do
+				local emcvalue = 0
+
+				if recipe.type == "cooking" and minetest.registered_items[recipe.items[1].emc] ~= nil then
+					emcvalue = minetest.registered_items[recipe.items[1]].emc * 1.5
+					-- table.insert(exceptions, itemname)
+
+				else
+					for _,item in pairs(recipe.items) do
+						if string.sub(item,1,string.len("group:"))=="group:" then
+							local current_emc = 0
+							for _,definition in pairs(minetest.registered_nodes) do 
+								if definition.groups[item] and definition.emc ~= nil then
+									if definition.emc < current_emc then
+										current_emc = definition.emc
+
+									elseif current_emc == 0 then
+										current_emc = definition.emc
+									end
+								end
+							end
+							emcvalue = current_emc
+						elseif minetest.registered_items[item] and minetest.registered_items[item].emc then
+							emcvalue = emcvalue + minetest.registered_items[item].emc
+						else
+							emcvalue = nil
+							break
+						end
+					end
+					output_number = recipe.output:split(" ")
+					local craft_number
+					if output_number[2] then
+						craft_number = tonumber(output_number[2])
+					else
+						craft_number = 1
+					end
+					if emcvalue ~= nil then
+						emcvalue = emcvalue / craft_number
+					end
+				end
+				local_emcs[itemname] = emcvalue
+			end
+		end
+	end
+	for item, value in pairs(local_emcs) do
+		minetest.override_item(item, {
+			description = minetest.registered_items[item].description.."\nEMC Value: "..value,
+			emc = value,
 		})
 	end
-end
+	local_emcs = {}
+end