麦扣 3DRPG游戏开发教程 12-13集

🎮

虚拟相机之FreeLook
适用于目前所有的第三人称视角的摄像机

需要把原有的虚拟相机关闭

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去修改攻击范围 尽量不要使用hardCode

高亮注释

//TODO: 内容

Rider我是没找到这个插件

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敌人的追击

新学了一个API 👉Physics.OverlapSphere()

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

public enum EnemyStates
{
    GUARD,
    PATROL,
    CHASE,
    DEAD
}

[RequireComponent(typeof(NavMeshAgent))]
public class EnemyController : MonoBehaviour
{
    private NavMeshAgent agent;
    private EnemyStates enemyStates;

    [Header("Basic Settings")] public float sightRadius;

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

    private void Update()
    {
        SwitchStates();
    }

    //状态切换机器
    void SwitchStates()
    {
        //⭐如果发现player 切换到chase⭐
        if (FoundPlayer())
        {
            enemyStates = EnemyStates.CHASE;
            print("找到玩家");
        }
        //--------------------------
        switch (enemyStates)
        {
            case EnemyStates.GUARD:
                break;
            case EnemyStates.PATROL:
                break;
            case EnemyStates.CHASE:
                break;
            case EnemyStates.DEAD:
                break;
        }
    }
//👇这个函数最终转换成一个判断
    bool FoundPlayer()
    {
        var colliders = Physics.OverlapSphere(transform.position, sightRadius);
        foreach (var target in colliders)
        {
            if (target.CompareTag("Player"))
            {
                return true;
            }
        }

        return false;
    }
}

13 敌人可以追着玩家走

//更改动画播放

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

public enum EnemyStates
{
    GUARD,
    PATROL,
    CHASE,
    DEAD
}

[RequireComponent(typeof(NavMeshAgent))]
public class EnemyController : MonoBehaviour
{
    private NavMeshAgent agent;
    private EnemyStates enemyStates;
    private Animator anim;
    [Header("Basic Settings")] 
    public float sightRadius;

    private float speed;
    public bool isGuard;
    private GameObject attackTarget;

    //bool配合动画
    private bool isWalk;
    private bool isChase;
    private bool isFollow;
    private void Awake()
    {
        anim = GetComponent<Animator>();
        agent = GetComponent<NavMeshAgent>();
        speed = agent.speed;
    }

    private void Update()
    {
        SwitchStates();
        SwitchAnimation();

    }

    void SwitchAnimation()
    {
        //⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
        anim.SetBool("Walk",isWalk);
        anim.SetBool("Chase",isChase);
        anim.SetBool("Follow",isFollow);
        //⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
    }

    //状态切换机器
    void SwitchStates()
    {
        //如果发现player 切换到chase
        if (FoundPlayer())
        {
            enemyStates = EnemyStates.CHASE;
          
        }
        //--------------------------
        switch (enemyStates)
        {
            case EnemyStates.GUARD:
                break;
            case EnemyStates.PATROL:
                break;
            case EnemyStates.CHASE:
                //追逐玩家
                //在攻击范围内攻击
                //配合动画
                isWalk = false;
                isChase = true;
                
                agent.speed = speed;
                if (!FoundPlayer())
                {
                    //拉脱回上一个状态
                    isFollow = false;
                    agent.destination = transform.position;
                }
                else
                {
                    isFollow = true;
                    agent.destination = attackTarget.transform.position;
                }
                break;
            case EnemyStates.DEAD:
                break;
        }
    }

    bool FoundPlayer()
    {
        var colliders = Physics.OverlapSphere(transform.position, sightRadius);
        foreach (var target in colliders)
        {
            if (target.CompareTag("Player"))
            {
                attackTarget = target.gameObject;
                return true;
            }

            
            
        }
        attackTarget = null;
        return false;
    }
}