敌人预设体添加两个脚本。

第一个是敌方坦克AI

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

public class emptyIsKill : MonoBehaviour {

	public float moveSpeed=10;
	public float rotateSpeed=10;
	private Transform mytransform;
	private GameObject player;
	[Header("发射炮弹间隔")]
	public float paoDanSpeed_Time = 5f;
	[Header("炮弹的预设体")]
	public GameObject bulletPrefab;
	[Header("被发现预设体")]
	public GameObject isFind;
	private GameObject xinHao;
	private bool xinHaoFlag = true;
	private Vector3 moveFangXiang=new Vector3 (1,0,0);
	private GameObject blt;
	private Transform firePoint;
	private Transform faXianPoint;
	void Awake()
	{
		mytransform = this.transform;

	}
	void Start()
	{
		player = GameObject.FindWithTag("Player");
		firePoint = transform.Find("FirePoint");
		faXianPoint = transform.Find("FaXianPoint");
		//moveFangXiang = new Vector3(Random.Range(0, 10) / 10, 0, Random.Range(0, 10) / 10);
		
	}
	
	void Update () {

		if ((mytransform.position - player.transform.position).sqrMagnitude < 3600)
		{
			mytransform.LookAt(player.transform);
			transform.Rotate(Vector3.down * 95);
		}
		else
		{
			transform.position +=transform.right * moveSpeed;
		}
			

		if (xinHaoFlag == true&& (mytransform.position - player.transform.position).sqrMagnitude < 3600)
		{
			xinHao = Instantiate(isFind);
			xinHao.transform.localScale=new Vector3(3,3,3);
			xinHao.transform.position = faXianPoint.position;
			xinHaoFlag = false;
		}
		if (xinHao)
		{
			xinHao.transform.position=faXianPoint.position;
		}
		Destroy(xinHao, 3f);
		paoDanSpeed_Time -= Time.deltaTime;
		if (paoDanSpeed_Time < 0)
		{
			blt = Instantiate(bulletPrefab,firePoint.position,Quaternion.identity);
			blt.transform.localScale = new Vector3(1, 1, 1);
			blt.GetComponent<Bullet>().moveDir = mytransform.right;
			blt.GetComponent<Bullet>().moveSpeed = 3f;
			paoDanSpeed_Time = 4f;		
		}

		Destroy(blt, 3f);
	}
	void OnCollisionEnter(Collision collisionInfo)
	{
		if (collisionInfo.gameObject.tag == "paoDan")
		{
			Destroy(xinHao);
			Debug.Log("awsl");
			Destroy(this.gameObject);
		}

	}
}

第二个控制敌人移动和转向

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

public class emptyMove : MonoBehaviour {

	public float moveSpeed=0.2f;
	public Vector3 moveFangXiang;
	void Start()
	{
		moveFangXiang = transform.right;
	}
	void Update () {
		
		transform.position += moveFangXiang * moveSpeed;

	}
	void OnCollisionEnter(Collision collisionInfo)
	{

		if (collisionInfo.gameObject.tag == "Terrain")
		{
			transform.Rotate(new Vector3(0 , Random.Range(0, 180), 0));
		}
	}
}