make mcl_potions use the new virtual item API

mods/ITEMS/mcl_potions/lingering.lua

@@ -234,7 +234,8 @@ function mcl_potions.register_lingering(name, descr, color, def)
 				ent._plus = item:get_meta():get_int("mcl_potions:potion_plus")
 				ent._effect_list = def._effect_list
 			end
-		end
+		end,
+		_get_all_virtual_items = def._get_all_virtual_items
 	})
 
 	local w = 0.7

mods/ITEMS/mcl_potions/potions.lua

@@ -29,6 +29,27 @@ local potion_intro = S("Drinking a potion gives you a particular effect or set o
 -- ██║░░░░░╚█████╔╝░░░██║░░░██║╚█████╔╝██║░╚███║██████╔╝
 -- ╚═╝░░░░░░╚════╝░░░░╚═╝░░░╚═╝░╚════╝░╚═╝░░╚══╝╚═════╝░
 
+local function generate_get_all_virtual_items_func(itemname, pdef)
+	return function()
+		local output = {brew = {}}
+		if pdef.has_potent then
+			local stack = ItemStack(itemname)
+			local potency = pdef._default_potent_level - 1
+			stack:get_meta():set_int("mcl_potions:potion_potent", potency)
+			tt.reload_itemstack_description(stack)
+			table.insert(output.brew, stack:to_string())
+		end
+		if pdef.has_plus then
+			local stack = ItemStack(itemname)
+			local extend = pdef._default_extend_level - 1
+			stack:get_meta():set_int("mcl_potions:potion_plus", extend)
+			tt.reload_itemstack_description(stack)
+			table.insert(output.brew, stack:to_string())
+		end
+
+		return output
+	end
+end
 
 local function generate_on_use(vanish, effects, _, on_use, custom_effect)
 	return function(itemstack, user, pointed_thing)
@@ -211,6 +232,8 @@ function mcl_potions.register_potion(def)
 
 	local internal_def = table.copy(pdef)
 	local itemname = modname .. ":" .. name
+
+	pdef._get_all_virtual_items = generate_get_all_virtual_items_func(itemname, pdef)
 	minetest.register_craftitem (itemname, pdef)
 
 	if def.has_splash or def.has_splash == nil then
@@ -230,6 +253,7 @@ function mcl_potions.register_potion(def)
 		sdef.custom_effect = def.custom_effect
 		sdef.on_splash = def.custom_splash_effect
 		sdef.base_potion = itemname
+		sdef._get_all_virtual_items = generate_get_all_virtual_items_func("mcl_potions:" .. name .. "_splash", sdef)
 		if not def._effect_list then sdef.instant = true end
 		mcl_potions.register_splash(name, splash_desc, color, sdef)
 		internal_def.has_splash = true
@@ -253,6 +277,7 @@ function mcl_potions.register_potion(def)
 		ldef.on_splash = def.custom_splash_effect
 		ldef.while_lingering = def.custom_linger_effect
 		ldef.base_potion = itemname
+		ldef._get_all_virtual_items = generate_get_all_virtual_items_func("mcl_potions:" .. name .. "_lingering", ldef)
 		if not def._effect_list then ldef.instant = true end
 		mcl_potions.register_lingering(name, ling_desc, color, ldef)
 		internal_def.has_lingering = true
@@ -281,6 +306,7 @@ function mcl_potions.register_potion(def)
 		adef._default_potent_level = pdef._default_potent_level
 		adef._default_extend_level = pdef._default_extend_level
 		adef.custom_effect = def.custom_effect
+		adef._get_all_virtual_items = generate_get_all_virtual_items_func("mcl_potions:" .. name .. "_arrow", adef)
 		if not def._effect_list then adef.instant = true end
 		mcl_potions.register_arrow(name, arr_desc, color, adef)
 		internal_def.has_arrow = true

mods/ITEMS/mcl_potions/splash.lua

@@ -67,7 +67,8 @@ function mcl_potions.register_splash(name, descr, color, def)
 				ent._plus = item:get_meta():get_int("mcl_potions:potion_plus")
 				ent._effect_list = def._effect_list
 			end
-		end
+		end,
+		_get_all_virtual_items = def._get_all_virtual_items
 	})
 
 	local w = 0.7

mods/ITEMS/mcl_potions/tipped_arrow.lua

@@ -31,6 +31,7 @@ function mcl_potions.register_arrow(name, desc, color, def)
 		_default_extend_level = def._default_extend_level,
 		inventory_image = "mcl_bows_arrow_inv.png^(mcl_potions_arrow_inv.png^[colorize:"..color..":100)",
 		groups = groups,
+		_get_all_virtual_items = def._get_all_virtual_items
 	}))
 
 	local ARROW_ENTITY = table.copy(minetest.registered_entities["mcl_bows:arrow_entity"])