AI案列 三条路

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

public class xunlu002 : MonoBehaviour {
    public float time = 0;
    public Transform target;
    public Transform tr;//生成点
    public GameObject[] obj = new GameObject[3];
    private NavMeshAgent agent;
    GameObject go;
    List<GameObject> c = new List<GameObject>();

    // Use this for initialization
    void Start () {
        
    }
    
    // Update is called once per frame
    void Update () {
        time += Time.deltaTime;
        if (time > 2)
        {

             go = Instantiate(obj[Random.Range(0, obj.Length)], tr.position, Quaternion.identity);
            go.GetComponent<NavMeshAgent>().destination = GameObject.Find("target").transform.position;

            c.Add(go);
            time = 0;


        }
        foreach (GameObject item in c)
        {
            if (Vector3.Distance( item.transform.position, target.position) <= 1.1f)
            {
                Destroy(item,1);
                c.Remove(item);
            }

        }
        }
       
    }