private void EquipSlot(ref InventoryCell equipmentObject, InventoryCell inventoryCell)
 {
     if (equipmentObject == null || equipmentObject.item == null)
     {
         equipmentObject = inventoryCell;
     }
     else
     {
         if (equipmentObject.item.id != inventoryCell.item.id)
         {
             var tmp = equipmentObject;
             equipmentObject = inventoryCell;
             inventory.AddCell(tmp);
         }
     }
 }