check_empty func do not show formspec

shop.lua

@@ -102,7 +102,7 @@ local function set_item(pos, stack, player)
    core.show_formspec(player:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, player) )
 end
 
-local function check_empty(pos, player)
+local function check_empty(pos)
    local meta = core.get_meta(pos)
    local inv = meta:get_inventory()
    local count = meta:get_int("count")
@@ -115,7 +115,6 @@ local function check_empty(pos, player)
    else
       swap_shop(pos)
    end
-   core.show_formspec(player:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, player) )
 end
 
 local function get_stonks(pos, player)
@@ -165,15 +164,19 @@ end
 
 local function on_metadata_inventory_put(pos, listname, index, stack, player)
    set_item(pos, stack, player)
-   check_empty(pos, player)
+   check_empty(pos)
+   --core.show_formspec(player:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, player) )
 end
 
 local function on_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
-   check_empty(pos, player)
+   check_empty(pos)
+   --core.show_formspec(player:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, player) )
+   
 end
 
 local function on_metadata_inventory_take(pos, listname, index, stack, player)
-   check_empty(pos, player)
+   check_empty(pos)
+   core.show_formspec(player:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, player) )
 end
 
 
@@ -182,6 +185,7 @@ local function on_timer(pos, elapsed)
    local owner = meta:get_string("owner")
    local is_online = core.player_exists(owner)
    core.get_node_timer(pos):start(shop_timer)
+   check_empty(pos)
    if is_online then
       local player = core.get_player_by_name(owner)
       if not player or player.is_fake_player then return end
@@ -279,7 +283,7 @@ core.register_on_player_receive_fields(function(sender, formname, fields)
 	 if fields.count and string.find(fields.count, "^[0-9]+$") then
 	    if new_count >= 1 and new_count <= 64 and new_count ~= meta:get_int("count") then
 	       meta:set_int("count", new_count)
-	       check_empty(pos, sender)
+	       check_empty(pos)
 	    end
 	 end
 
@@ -315,8 +319,8 @@ core.register_on_player_receive_fields(function(sender, formname, fields)
 		  emeraldbank.add_emeralds(sender, -old_price)
 		  meta:set_int("stonks", meta:get_int("stonks")+old_price)
 		  core.chat_send_player(name, S("Exchanged!"))
-		  check_empty(pos, sender) --this func already shows formspec, so I comment it bellow
-		  --core.show_formspec(sender:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, sender) )
+		  check_empty(pos)
+		  core.show_formspec(sender:get_player_name(), formspec_prefix..core.pos_to_string(pos), emeraldbank.get_shop_fs(pos, sender) )
 	       end
 	       
 	    end