yichael_smartbow/Assets/ArtAsset/Hunter/Models/Wolf/Wolf.cs

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

public class Wolf : TargetAnimal
{
    //动画播放器
    AnimationPlayer ap;
    //寻路代理
    NavMeshAgent agent;
    //血量
    [System.NonSerialized] public int hp = 1;
    [SerializeField] Material[] materials;

    public void ChangeColorByType(int type) {
        GetComponentInChildren<SkinnedMeshRenderer>().material = materials[type - 1];
    }

    void Awake()
    {
        ap = GetComponent<AnimationPlayer>();
        agent = GetComponent<NavMeshAgent>();
    }

    void Start()
    {
        //初始动画
        playAniForIdle();
        //初始化自动策略
        InitAutoStrategy();
    }

    void Update()
    {
        //寻路过程监测
        if (HasCloseToDestination()) {
            OnReachDestination();
        } else {
            OnMovingToDestination();
        }
        UpdateAction();
        UpdateActionTime();
        UpdateAutoStrategy();
    }

    public void Disappear() {
        Destroy(this.gameObject);
    }

    public override void OnHit(Arrow arrow, Vector3 hitPoint, string partName)
    {
        arrow.Head().position = hitPoint + arrow.transform.forward * 0.1f;
        arrow.Hit();
        if (partName == "Leg" || partName == "Tail") hp -= 2;
        else if (partName == "Body") hp -= 3;
        else if (partName == "Head") hp -= 100;
        if (hp <= 0) {
            Die(arrow);
        } else {
            Hurt();
        }
    }

    void Die(Arrow arrow) {
        if (dead) return;
        arrow.onDoNextShoot += delegate() {
            Disappear();
        };
        dead = true;
        this.agent.enabled = false;
        PuaseAutoStrategy();
        onDie?.Invoke(this);
        AudioMgr.ins.PlayAnimalEffect("wolf_die", AudioMgr.GetAudioSource(this.gameObject));
    }

    void Hurt() {
        addHurtFlag();
        PuaseAutoStrategy();
        RunAwayFromHunter();
        AudioMgr.ins.PlayAnimalEffect("wolf_injured", AudioMgr.GetAudioSource(this.gameObject));
    }

    JC.CS.CountLocker hurtFlag = new JC.CS.CountLocker();
    void addHurtFlag() {
        hurtFlag.Lock();
        Invoke("clearOneHurtFlag", 5);
    }
    void clearOneHurtFlag() {
        hurtFlag.Unlock();
        if (hurtFlag.IsReleased()) {
            onHurtFlagTimeout();
        }  
    }
    void onHurtFlagTimeout() {
        if (!dead) ResumeAutoStrategy();
    }

    //是否已经死亡
    bool dead = false;
    //是否处于移动状态
    bool _moving = false;
    bool moving {
        get {
            return _moving;
        }
        set {
            if (_moving && !value) {
                movingTime = 0;

            }
            if (!_moving && value) stayingTime = 0;
            _moving = value;
        }
    }
    //实时记录“单次移动的持续时间”
    float movingTime = 0;
    //实时停留时间
    float stayingTime = 0;
    //启动寻路
    void SetDestination(Vector3 pos) {
        moving = true;
        this.agent.destination = pos;
    }
    //寻路过程
    void OnMovingToDestination() {
        if (!moving) return;
    }
    //寻路结束
    void OnReachDestination() {
        if (!moving) return;
        moving = false;
    }
    //是否已经接近目的地（寻路完成判断）
    bool HasCloseToDestination() {
        if (!moving) return true;
        if (movingTime > 0.1) {
            if (this.agent.velocity.magnitude < 0.05f) {
                return true;
            }
        }
        return false;
    }
    //更新动作
    void UpdateAction() {
        if (dead) {
            if (!isAniDie()) playAniDie();
        } else if (moving) {
            if (!isAniRun()) playAniRun();
        } else {
            if (!IsAniForIdle()) {
                playAniForIdle();
            }
        }
    }
    //记录动作时间
    void UpdateActionTime() {
        if (moving) {
            movingTime += Time.deltaTime;
        } else {
            stayingTime += Time.deltaTime;
        }
    }

    float willStayTime;
    float willMoveTime;  
    bool autoMoving = false;
    float autoMovingTime;
    bool autoStrategy = true;
    //自动策略的更新逻辑
    void UpdateAutoStrategy() {
        if (!autoStrategy) return;
        if (stayingTime > willStayTime) {
            autoMoving = true;
            RandomMove();
            RandomWillStayTime();
        } 
        if (autoMoving) {
            if (moving) {
                autoMovingTime += Time.deltaTime;
            } else if (autoMovingTime < willMoveTime) {
                RandomMove();
            } else if (autoMovingTime >= willMoveTime) {
                Stay();
                RandomWillMoveTime();
                autoMoving = false;
                autoMovingTime = 0;
            }
        }
    }
    void InitAutoStrategy() {
        autoStrategy = true;
        this.willStayTime = 1 + Random.value * 4;
        RandomWillMoveTime();
    }
    void PuaseAutoStrategy() {
        this.autoStrategy = false;
    }
    void ResumeAutoStrategy() {
        this.autoStrategy = true;
        RandomWillStayTime();
        RandomWillMoveTime();
        this.autoMoving = false;
        this.autoMovingTime = 0;
    }
    void RandomWillStayTime() {
        this.willStayTime = Random.value * 3 + 5;
    }
    void RandomWillMoveTime() {
        this.willMoveTime = Random.value * 2 + 3;
    }

    //逃跑远离猎人
    void RunAwayFromHunter() 
    {
        Vector3 backVec = GetPointerHunterToMe();
        SetDestination(transform.position + backVec.normalized * 5);
        playAniRun();
    }

    [System.NonSerialized] public float baseDistance = 10;
    [System.NonSerialized] public float baseDistanceMoveRange = 3;
    //随机移动
    void RandomMove() {
        Vector3 standardPointer = basePointer;
        Vector3 pointerWithLen = standardPointer.normalized * (baseDistance + Random.value * baseDistanceMoveRange);
        pointerWithLen = Quaternion.AngleAxis(-30f + Random.value * 60f, Vector3.up) * pointerWithLen;
        Vector3 newPos = basePosition + pointerWithLen;
        // GameObject.Find("BBAA").transform.position = newPos;
        // GameObject.Find("BBBA").transform.LookAt(GameObject.Find("BBAA").transform);
        SetDestination(newPos);
    }

    //停留
    void Stay() {
        if (moving) {
            this.agent.destination = this.agent.nextPosition;
            OnReachDestination();
        }
    }

    //当前动画索引
    int curAnimIndex = 0;
    void playAniDie() {
        ap.speed = 1.0f;
        ap.play(curAnimIndex = 2, WrapMode.Once);
    }
    bool isAniDie() {
        return curAnimIndex == 2;
    }
    void playAniRun() {
        if (Random.value < 0.4 || hurtFlag.IsLocked()) {
            curAnimIndex = 4;
            ap.speed = 1.3f;
            this.agent.speed = 5;
        } else {
            curAnimIndex = 5;
            ap.speed = 1.0f;
            this.agent.speed = 0.5f;
        }
        ap.play(curAnimIndex, WrapMode.Loop);
    }
    bool isAniRun() {
        return curAnimIndex == 4 || curAnimIndex == 5;
    }

    bool IsAniForIdle() {
        return curAnimIndex == 3;
    }

    void playAniForIdle() {
        ap.speed = 1.0f;
        curAnimIndex = 3;
        ap.play(curAnimIndex, WrapMode.Loop);
    }

    //委托
    public System.Action<Wolf> onDie;
}