따라다니게 해보자.

using UnityEngine;

using System.Collections;

public class ExCube : MonoBehaviour {

public Transform Target;

Vector3 diff;

// Use this for initialization

void Start () {

}

public void GetDiff(){

diff = Target.position - transform.position;

}

// Update is called once per frame

void Update () {

diff = Target.position - transform.position;

transform.position += diff * Time.deltaTime * 2.0f;

GetDiff();

}

}