Unity实现物体左右移动效果

using UnityEngine;using System.Collections; //Add this script to the platform you want to move.//左右移动的平台public class MovingPlatform : MonoBehaviour {  //Platform movement speed.平台移动速度 public float speed;  //This is the position where the platform will move.平台移动的位置 public Transform MovePosition;//创建一个空物体作为移动的位置  private Vector3 StartPosition; private Vector3 EndPosition; private bool OnTheMove;  // Use this for initialization void Start () { //Store the start and the end position. Platform will move between these two points.储存左右两端点位置 StartPosition = this.transform.position; EndPosition = MovePosition.position; }  void FixedUpdate () {  float step = speed * Time.deltaTime;  if (OnTheMove == false) { this.transform.position = Vector3.MoveTowards (this.transform.position, EndPosition, step); }else{ this.transform.position = Vector3.MoveTowards (this.transform.position, StartPosition, step); }  //When the platform reaches end. Start to go into other direction. if (this.transform.position.x == EndPosition.x && this.transform.position.y == EndPosition.y && OnTheMove == false) { OnTheMove = true; }else if (this.transform.position.x == StartPosition.x && this.transform.position.y == StartPosition.y && OnTheMove == true) { OnTheMove = false; } }  }