【Unity 3D学习】人物在两个地点之间来回走动

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其实原理很简单，就是使用组件“Nav Mesh Agent”，当到达目的地的时候设置新的目的地，具体代码如下。

using UnityEngine;using System.Collections;public class EnemyMovement : MonoBehaviour{NavMeshAgent nav;               Vector3 originalPosition;Vector3 newPosition = Vector3.zero;Vector3 currentDestination = Vector3.zero;float waitTime = 3f;bool canMoving = true;        //控制物体是否能够移动void Start () {nav = GetComponent <NavMeshAgent> ();originalPosition = transform.position;   //拿到物体初始位置float x = Random.Range (-10, 10);float z = Random.Range (-10, 10);newPosition = new Vector3 (originalPosition.x + x, originalPosition.y, originalPosition.z + z); //拿到物体随机得到的另一个位置currentDestination = newPosition;}void Update (){if (canMoving) {nav.SetDestination (currentDestination);if (nav.remainingDistance < 0.5f) {       //到达目的地后暂停3s，然后切换目的地，达到来回走动的效果canMoving = false;StartCoroutine(delayCoroutine());     //停留3s再返回}}}IEnumerator delayCoroutine() {if (Vector3.Equals (currentDestination, newPosition)) {currentDestination = originalPosition;} else {currentDestination = newPosition;}yield return new WaitForSeconds(waitTime);canMoving = true;}}

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