一个简单的敌人自动寻找玩家进行攻击及受到伤害死亡效果实现

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

public class ZombieAI : MonoBehaviour
{
//动画状态机组件
private Animator Animator;
//导航网格
private NavMeshAgent NavMeshAgent;

//移动速度
public float MoveSpeed;
//丧尸生命值
public float ZombieHealth;
//伤害值
public float Damage;
//是否存活
public bool Alive;
//目标对象
public GameObject Target;
//攻击范围
public float AttackRanage;

//攻击时间
private float AttackTime;
private float NextAttackTime;

//获取玩家对象及玩家血量
public GameObject Player;
public float PlayerHealth;

// Use this for initialization
void Start ()
{
//初始化变量
//MoveSpeed = NavMeshAgent.speed;
MoveSpeed = 1.0f;
Alive = true;
ZombieHealth = 50.0f;
Damage = 20.0f;
AttackRanage = 1.0f;
AttackTime = 2.0f;
Animator = GetComponent<Animator>();
NavMeshAgent = GetComponent<NavMeshAgent>();
Player = GameObject.FindWithTag("Player");
Target = GameObject.FindWithTag("Player");
}

// Update is called once per frame
void Update ()
{

PlayerHealth = Player.GetComponent<Steam_VR_PlayerCharacter>().Health;

//动画状态机信息
AnimatorStateInfo _animatorInfo;
_animatorInfo = Animator.GetCurrentAnimatorStateInfo(0);

if (Alive == true)
{
if (Target != null)
{
NavMeshAgent.destination = Target.transform.position;
Animator.SetBool("Walk", true);

//当敌人接近玩家并且进入到可攻击距离时进行攻击
if (Vector3.Distance(Player.transform.position, this.transform.position) < AttackRanage)
{
NavMeshAgent.Stop();
//transform.LookAt(Target.transform);
Animator.SetBool("Walk", false);
Animator.SetBool("Attack", true);
}

//播放攻击动画后对玩家造成伤害
if ((_animatorInfo.normalizedTime > 1 && _animatorInfo.IsName("Base Layer.Attack")))
{
Animator.SetBool("Attack", false);
if (NextAttackTime < Time.time)
{
NextAttackTime = Time.time + AttackTime;
PlayerHealth = PlayerHealth - Damage;
Player.GetComponent<Steam_VR_PlayerCharacter>().SendMessageUpwards("Damage", Damage);
if (PlayerHealth < 0)
PlayerHealth = 0;
//通过外部设置玩家血量
Player.GetComponent<Steam_VR_PlayerCharacter>().SetHealth(PlayerHealth);
print(PlayerHealth);
}
}
}
}

//敌人血量为0时死亡
if (ZombieHealth <= 0)
{
Alive = false;
Animator.SetBool("Die", true);
NavMeshAgent.Stop();
Destroy(GetComponent<CapsuleCollider>());
StartCoroutine(ZombieDie());
}

if ((_animatorInfo.normalizedTime > 1 && _animatorInfo.IsName("Base Layer.hit")))
{
Animator.SetBool("Hit", false);
}

if (ZombieHealth <= 0)
ZombieHealth = 0;

}

//死亡后销毁游戏对象
IEnumerator ZombieDie()
{
yield return new WaitForSeconds(5.0f);
Destroy(this.gameObject);
//ZombieHealth = 50;
}

//受到子弹撞击时减少血量
void OnCollisionEnter(Collision other)
{
if (other.gameObject.tag == "Bullet")
{
ZombieHealth -= 10;
Animator.SetBool("Hit", true);
}
else
{
Animator.SetBool("Hit", false);
}
}

//允许外部设置zombie血量
//public void SetZombieHealth(float ZombieHealth)
{
this.ZombieHealth = ZombieHealth;
}
}