using System.Collections;using System.Collections.Generic;using UnityEngine;public class fanfuyundong09 : MonoBehaviour{    public GameObject sphere;//定义另一个球    GameObject obj;    float speed = 1;      //List
     
       spherelist = new List
      
       ();    // Use this for initialization    void Start()    {            }    // Update is called once per frame    void Update()    {        this.transform.LookAt(sphere.transform.position);        sphere.transform.LookAt(this.transform.position);//互相用z轴看向对方        if (Vector3.Distance(this.transform.position, sphere.transform.position) > 10f)//如果他们之间的距离大于10        {            speed = 1;//朝z轴正向移动        }        if (Vector3.Distance(this.transform.position, sphere.transform.position) < 1f)//如果距离小于1        {            speed = -1;//朝z轴反向移动        }        this.transform.Translate(0, 0, speed * 0.1f);        sphere.transform.Translate(0, 0, speed * 0.1f);    }}