Let protector:tool handle param2 and owner

protector.lua

@@ -120,23 +120,16 @@ end
 if has_protector_mod then
 	protector.tool:register_protector('xp_redo:protector', {
 		nodes = nil, -- Compatible nodes for protector tool, uses same on_place, radius, etc.
-		on_place = function(user, pos, source_pos, nodename)
-
-			-- place protector
-			minetest.set_node(pos, {name = nodename, param2 = 1})
-
-			local meta = minetest.get_meta(pos)
-			local name = user:get_player_name()
-
-			meta:set_string("owner", name)
-
+		param2 = nil, -- Default param2 for protector
+		on_place = nil, -- on_place callback, protector is about to be placed
+		after_place = function(user, meta, src_meta, nodename)
 			-- copy members across if holding sneak when using tool
 			if user:get_player_control().sneak then
 				-- get priv on source protector / set target protector metadata
-				local src_meta = minetest.get_meta(source_pos)
 				local xpthreshold = src_meta:get_int("xpthreshold") or 1000
 				meta:set_int("xpthreshold", xpthreshold)
 			else
+				local name = user:get_player_name()
 				meta:set_int("xpthreshold", get_last_player_user_xp(name))
 			end
 			update_formspec(meta)