MRFishingMaster/Assets/_FishingMaster/Scripts/Fish/SharkFish.cs

using System;
using System.Collections;
using System.Collections.Generic;
using DragonLi.Core;
using UnityEngine;

public class SharkFish : Fish
{
    [Header("鲨鱼设置")]
    [NonSerialized]
    public float patrolRadius = 8f; // 巡逻半径
    [NonSerialized]
    public float patrolSpeed = 0.5f;  // 巡逻速度
    [NonSerialized]
    public float attackSpeed = 4f;  // 攻击速度
    [NonSerialized]
    public float attackInterval = 10f; // 攻击间隔
    
    [Header("攻击设置")]
    public float attackDistance = 1.5f; // 攻击距离
    public float retreatDistance = 5f; // 撤退距离
    
    public Animator animator;
    
    private Transform player;
    private SharkState currentState;
    private float attackTimer;
    private int showTime;
    private float curShowTime;
    private Vector3 circleCenter;
    
    // 鲨鱼状态枚举
    private enum SharkState
    {
        Patrolling, // 圆形巡逻
        Attacking,  // 攻击玩家
        Retreating  // 撤退
    }

    public override void Start()
    {
        base.Start();
        player = GameManager.Ins.player.transform;
        currentState = SharkState.Patrolling;
        // 攻击间隔改为20-30秒随机
        attackInterval = UnityEngine.Random.Range(20f, 30f);
        attackTimer = attackInterval;
        circleCenter = player.position;
        showTime = 60;
        StartCoroutine(SharkAI());
    }
    
    IEnumerator SharkAI()
    {
        // 鲨鱼存活且显示时间未到1分钟时继续循环
        while (curShowTime <= showTime && state == FishState.Alive)
        {
            switch (currentState)
            {
                case SharkState.Patrolling:
                    animator.SetInteger("state",0);
                    yield return StartCoroutine(PatrolBehavior());
                    break;
                case SharkState.Attacking:
                    animator.SetInteger("state",1);
                    yield return StartCoroutine(AttackBehavior());
                    break;
                case SharkState.Retreating:
                    animator.SetInteger("state",0);
                    yield return StartCoroutine(RetreatBehavior());
                    break;
            }

            curShowTime += Time.deltaTime;
            yield return new WaitForEndOfFrame(); // 关键：等待一帧
        }

        OnSplineEnd();
    }
    
    // 圆形巡逻行为
    IEnumerator PatrolBehavior()
    {
        float angle = 0f;
    
        while (attackTimer > 0 && currentState == SharkState.Patrolling)
        {
            attackTimer -= Time.deltaTime;
        
            // 更新圆形中心点为玩家当前位置
            circleCenter = player.position;
        
            // 圆形运动
            angle += patrolSpeed * Time.deltaTime;
            Vector3 targetPosition = circleCenter + new Vector3(
                Mathf.Cos(angle) * patrolRadius,
                0,
                Mathf.Sin(angle) * patrolRadius
            );
        
            // 计算移动方向（前进方向）
            Vector3 moveDirection = (targetPosition - transform.position).normalized;
        
            // 如果移动方向不为零，让鲨鱼面向前进方向
            if (moveDirection != Vector3.zero)
            {
                Quaternion targetRotation = Quaternion.LookRotation(moveDirection);
                transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, 5f * Time.deltaTime);
            }
        
            // 平滑移动到目标位置
            transform.position = Vector3.Lerp(transform.position, targetPosition, 2f * Time.deltaTime);
        
            yield return null;
        }
    
        if (attackTimer <= 0)
        {
            currentState = SharkState.Attacking;
            // 重置计时器为20-30秒随机
            attackInterval = UnityEngine.Random.Range(20f, 30f);
            attackTimer = attackInterval;
        }
    }
    
    // 攻击行为
    IEnumerator AttackBehavior()
    {
        Vector3 attackDirection = (player.position - transform.position).normalized;
        float attackStartTime = Time.time;
        float maxAttackDuration = 3f;
        
        while (currentState == SharkState.Attacking)
        {
            // 朝向玩家
            transform.rotation = Quaternion.LookRotation(attackDirection);
            
            // 冲向玩家
            transform.position += attackDirection * attackSpeed * Time.deltaTime;
            GameManager.Ins.PlaySound3D("鲨鱼袭击",transform,true);
            // 检查是否到达攻击距离
            float distanceToPlayer = Vector3.Distance(transform.position, player.position);
            if (distanceToPlayer <= attackDistance)
            {
                // 攻击玩家
                AttackPlayer();
                currentState = SharkState.Retreating;
                break;
            }
            
            // 防止攻击时间过长
            if (Time.time - attackStartTime > maxAttackDuration)
            {
                currentState = SharkState.Retreating;
                break;
            }
            
            yield return null;
        }
    }
    
    // 撤退行为
    IEnumerator RetreatBehavior()
    {
        Vector3 retreatDirection = (transform.position - player.position).normalized;
        float retreatStartTime = Time.time;
        float retreatDuration = 2f;
        
        while (Time.time - retreatStartTime < retreatDuration && currentState == SharkState.Retreating)
        {
            // 远离玩家撤退
            transform.position += retreatDirection * patrolSpeed * Time.deltaTime;
            yield return null;
        }
        
        // 回到巡逻状态
        currentState = SharkState.Patrolling;
    }
    
    // 攻击玩家
    void AttackPlayer()
    {
        // 触发屏幕特效
        EventDispatcher.TriggerEvent("PlayerHit",0);
    }
    
    void OnDrawGizmosSelected()
    {
        // 绘制巡逻范围
        Gizmos.color = Color.blue;
        Gizmos.DrawWireSphere(circleCenter, patrolRadius);
        
        // 绘制攻击距离
        Gizmos.color = Color.red;
        Gizmos.DrawWireSphere(transform.position, attackDistance);
    }
}