Fix door hardness detection for open/close sounds

mods/doors/init.lua

@@ -16,17 +16,6 @@ doors = {}
 --    only_placer_can_open: if true only the player who placed the door can
 --                          open it
 
-local function is_right(pos) 
-	local r1 = minetest.get_node({x=pos.x-1, y=pos.y, z=pos.z})
-	local r2 = minetest.get_node({x=pos.x, y=pos.y, z=pos.z-1})
-	if string.find(r1.name, "door_") or string.find(r2.name, "door_") then
-		if string.find(r1.name, "_1") or string.find(r2.name, "_1") then
-			return true
-		else
-			return false
-		end
-	end
-end
 
 function doors.register_door(name, def)
 	def.groups.not_in_creative_inventory = 1
@@ -104,6 +93,8 @@ function doors.register_door(name, def)
 			else
 				minetest.set_node(pt, {name=name.."_b_2", param2=p2})
 				minetest.set_node(pt2, {name=name.."_t_2", param2=p2})
+				minetest.get_meta(pt):set_int("right", 1)
+				minetest.get_meta(pt2):set_int("right", 1)
 			end
 
 			if def.only_placer_can_open then
@@ -153,7 +144,7 @@ function doors.register_door(name, def)
 			snd_2 = def.sound_close_door
 		end
 
-		if is_right(pos) then
+		if minetest.get_meta(pos):get_int("right") ~= 0 then
 			minetest.sound_play(snd_1, {pos = pos, gain = 0.3, max_hear_distance = 10})
 		else
 			minetest.sound_play(snd_2, {pos = pos, gain = 0.3, max_hear_distance = 10})