LinkedList<BoxCollider> list = new LinkedList<BoxCollider>();
	LinkedListNode<BoxCollider> current;

	void Awake()
	{
		list.AddLast(new BoxCollider);
		current = list.First;
	}

	OnTriggerEnter(BoxCollider collidedWith)
	{
		if(collidedWith == current.Value)
		{
			current = current.Next;
		}
	}