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AI：原地巡逻自动攻击型

AI会在横版地图上向左向右移动，移动一段距离后会原地停止移动，等待一段时间后，会随机向左或向右移动，以此循环，其中AI移动速度，移动时间、停留时间均可以自行调控，当人物进入怪物攻击范围后 会自动面向人物进行攻击，攻击时不会移动，直至人物离开攻击范围，怪物受到攻击后会闪红，有血量：

脚本：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class ChameleonController : MonoBehaviour
{public static ChameleonController chameleonController;private void Awake(){chameleonController = this;}Animator animator;Rigidbody2D rg;public float MoveSpeed = 0;float changeTime = 0;float time = 0;//随机时间public float minTime = 0;public float maxTime = 0;int direction = 1;float distance_ = 0;bool isChange = false;bool canHit = false;Transform PlayerTransform;public float Distance = 0;float Dwell_gap = 0; //停留时间float Dwell_Cumulative = 0; //停留时间累积public float DwellMinTime = 0;public float DwellMaxTime = 0;float moveTime = 0; //行走时间//行走的最大时间和最短时间设定public float moveMinTime = 0;public float moveMaxTime = 0;float moveTimeCumulative = 0;bool isDwell = false;bool isDwellRange = false;bool CanMove = false;bool CanCount = false;bool CanTimeCumulative = false;bool isAttacking = false;bool isAttacked = false;public bool TrackPlayer = false;public float TrackSpeed = 0;public float CurrentPlayer = 0;public float Life_value = 0;public float hitTime = 0;bool isHit = false;float time1 = 0;GameObject gm;bool isinvincible = false;void Start(){animator = GetComponent<Animator>();rg = GetComponent<Rigidbody2D>();CanMove = false;CanCount = true;}void Update(){PlayerTransform = GameObject.Find("Player").transform;//得到与玩家的距离distance_ = Mathf.Sqrt(Mathf.Abs(PlayerTransform.transform.position.x - transform.position.x) * Mathf.Abs(PlayerTransform.transform.position.x - transform.position.x) +Mathf.Abs(PlayerTransform.transform.position.y - transform.position.y) * Mathf.Abs(PlayerTransform.transform.position.y - transform.position.y));time = time + Time.deltaTime;if(isChange==false){changeTime = Random.Range(minTime, maxTime);isChange = true;}transform.localScale = new Vector3(-direction, 1, 1);if (time > changeTime){direction = -direction;transform.localScale = new Vector3(-direction, 1, 1);time = 0;isChange = false;}//判断是否在攻击距离之内if(distance_<Distance){canHit = true;}else{canHit = false;}if(canHit){//判断玩家在怪物的哪边if (PlayerTransform.transform.position.x < transform.position.x){direction = 1;animator.SetBool("attack", true);GMF_PlayerController._PlayeController.inJured(CurrentPlayer);transform.localScale = new Vector3(direction, 1, 1);}else{direction = -1;animator.SetBool("attack", true);transform.localScale = new Vector3(direction, 1, 1);GMF_PlayerController._PlayeController.inJured(CurrentPlayer);}}else{animator.SetBool("attack", false);}//随机暂停时间 开始暂停 播放停留动画 人物停止移动 生成暂停时间if(CanCount){isDwellRange = true;CanTimeCumulative = true;CanCount = false;}if(isDwellRange) //设置停留动画 设置暂停时间 {Dwell_gap = Random.Range(DwellMinTime, DwellMaxTime);animator.SetBool("idem", true);animator.SetBool("run", false);CanMove = false;isDwellRange = false;}if (CanTimeCumulative){Dwell_Cumulative = Dwell_Cumulative + Time.deltaTime;}if (Dwell_Cumulative > Dwell_gap) //超过暂停时间 停留结束 结束停留动画 生成行走时间 开始行走动画{animator.SetBool("idem", false);animator.SetBool("run", true);moveTime = Random.Range(moveMinTime, moveMaxTime);CanMove = true;Dwell_Cumulative = 0;CanTimeCumulative = false;}//行走时间结束 if(CanMove){moveTimeCumulative = moveTimeCumulative + Time.deltaTime;if(moveTimeCumulative>moveTime){CanMove = false;moveTimeCumulative = 0;CanCount = true;}}if(Life_value<=0){Destroy(this.gameObject);}if (isHit){// animator.SetBool("current", true);time1 = time1 + Time.deltaTime;if (time1 > hitTime){animator.SetBool("current", false);isinvincible = false;isHit = false;time1 = 0;}}}private void FixedUpdate(){//没有停留就可以移动if(CanMove){MoveMent();}}void MoveMent(){if(TrackPlayer==false){rg.velocity = new Vector2(1 * direction * MoveSpeed, 0);}else{if (distance_ < Distance){if(PlayerTransform.transform.position.x < transform.position.x){rg.velocity = new Vector2(-1 * TrackSpeed, 0);}else{rg.velocity = new Vector2( 1 * TrackSpeed, 0);}}}}private void OnTriggerExit2D(Collider2D collision){if(collision.tag=="Player"){CanMove = true;}}private void OnTriggerEnter2D(Collider2D collision){if (collision.tag == "Player"){CanMove = false;}if (collision.tag == "bullte"){if(isinvincible==false){animator.SetBool("current", true);isinvincible = true;isHit = true;}}}public void Current(float value){Life_value = Life_value - value;}}

AI属性面板：

AI动画设置，注意动画的命名要一样，不然需要修改代码：













需要注意的是，每个动画没有过度，直接切换，不然会有一些卡顿

人物标签需要设置为Player

怪物标签需要设置为Chameleon

如果想让怪物之间不能够相互碰撞，让怪物和玩家间可以相互碰撞，可以给怪物AI和玩家分别设置一个碰撞层级，方法如下：
首先我们需要为人物和怪物设置分别设置一个层级，一个是人物层级，一个是怪物层级，点击Layer下拉菜单：

添加一个层级：

接下来：

在编辑下拉菜单下找到Project Setting，将不想发生碰撞的两个层级较差的对勾取消掉

子弹攻击，AI掉血摧毁设置：

bullte为子弹，需要有boxCollider2D，勾选Is Trigger