ufo/Assets/Script/ArrowLook.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ArrowLook : MonoBehaviour {

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
      
    }

    public void Look(GameObject cube)
    {
        transform.LookAt(cube.transform);
    }
}