/// <summary>
 /// Checks if item can be equipped. Also equips it.
 /// </summary>
 /// <param name="item"></param>
 /// <param name="lastItem"></param>
 /// <returns></returns>
 public bool Equip(Item item, out Item lastItem)
 {
     if (inventory.RemoveItem(item))
     {
         Item previousItem;
         if (equipments.AddItem(item, out previousItem))
         {
             if (previousItem != null)
             {
                 previousItem.isEquipped = false;
                 inventory.AddItem(previousItem);
             }
             item.isEquipped = true;
             lastItem        = previousItem;
             return(true);
         }
         else
         {
             inventory.AddItem(item);
         }
     }
     lastItem = null;
     return(false);
 }