public bool AddItemTileToBackpack(ItemInventoryTile itemTile)
        {
            GD.Print("BackPackSlotManager - AddItemTileToBackpack");
            BackPackSlot slot = GetEmptySlot();

            // There aren't any open slots :'(
            if (slot == null)
            {
                return(false);
            }

            slot.AddItemTile(itemTile);
            return(true);
        }
 /// <summary>
 /// Scan and register all inventory slots
 /// </summary>
 private void RegisterSlots()
 {
     for (int row = 0; row < 4; row++)
     {
         for (int col = 0; col < 4; col++)
         {
             BackPackSlot slot = GetNode <BackPackSlot>($"Container/Rows/{row}/{col}");
             slot.Init(row, col);
             slot.OnDropItemOnGround += HandleOnDropItemOnGround;
             slot.OnShowContextMenu  += HandleOnShowContextMenu;
             backPackSlots[row, col]  = slot;
         }
     }
 }