[HeroShooter] 스테이지4: 움직이고 근거리 공격하는 몬스터 배치 구현

Player가 죽으면 다른 Enemy 모두 동작을 멈춘다.

 

장애물을 거쳐서 돌아올 때에 약간의 수정이 필요해 보임

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

public class Stage4Enemy : EnemyBase
{
    public float detectionRadius = 5.0f;
    public LayerMask playerLayer;
    private GameObject detectedPlayer = null;
    public NavMeshAgent navAgent;
    public float attackRange = 5.0f; // 공격 범위

    protected override void Start()
    {
        base.Start();
        navAgent = GetComponent<NavMeshAgent>();
    }

    protected override void Update()
    {
        base.Update();
        PlayerDetect();
        RotateTowardsPlayer();
    }

    protected override IEnumerator EnemyAnimation()
    {
        while (true)
        {
            switch (enemyState)
            {
                case EnemyState.Idle:

                    animator.SetInteger("state", 0);
                    break;
                case EnemyState.Walk:

                    animator.SetInteger("state", 1);
                    break;
                case EnemyState.GetHit:

                    animator.SetInteger("state", 2);
                    yield return new WaitUntil(() => animator.GetCurrentAnimatorStateInfo(0).normalizedTime >= 1f && animator.GetCurrentAnimatorStateInfo(0).IsName("GetHit"));
                    enemyState = EnemyState.Idle;
                    navAgent.isStopped = false; // 다시 적을 활성화
                    break;
                case EnemyState.Die:
                    animator.SetInteger("state", 3);
                    targetPoint.SetActive(false);
                    this.GetComponent<Collider>().enabled = false;
                    yield return new WaitUntil(() => animator.GetCurrentAnimatorStateInfo(0).normalizedTime >= 1f && animator.GetCurrentAnimatorStateInfo(0).IsName("Die"));
                    Destroy(this.gameObject);
                    break;
                case EnemyState.Attack:
                    if (detectedPlayer != null && Vector3.Distance(transform.position, detectedPlayer.transform.position) <= attackRange)
                    {
                        animator.SetInteger("state", 4);
                        yield return new WaitUntil(() => animator.GetCurrentAnimatorStateInfo(0).normalizedTime >= 1f && animator.GetCurrentAnimatorStateInfo(0).IsName("Attack"));
                    }
                    else
                    {
                        enemyState = EnemyState.Idle;
                    }
                    break;
            }
            yield return null;
        }
    }

    void RotateTowardsPlayer()
    {
        if (detectedPlayer != null)
        {
            Vector3 lookDirection = (detectedPlayer.transform.position - transform.position).normalized;
            lookDirection.y = 0;
            Quaternion lookRotation = Quaternion.LookRotation(lookDirection);
            transform.rotation = Quaternion.Slerp(transform.rotation, lookRotation, Time.deltaTime * 5.0f);
        }
    }


    void PlayerDetect()
    {
        // Player의 체력이 0 이하인 경우
        if (GameManager.Instance.PlayerHP <= 0)
        {
            detectedPlayer = null;
            enemyState = EnemyState.Idle;
            navAgent.isStopped = true;
            return; // Idle 상태를 유지하고 함수 종료
        }

        // 다른 상황 처리
        if (enemyHP <= 0 || enemyState == EnemyState.GetHit) return;

        Collider[] detectedPlayers = Physics.OverlapSphere(transform.position, detectionRadius, playerLayer);

        if (detectedPlayers.Length > 0)
        {
            navAgent.isStopped = false;
            detectedPlayer = detectedPlayers[0].gameObject;
            float distanceToPlayer = Vector3.Distance(transform.position, detectedPlayer.transform.position);

            if (distanceToPlayer > attackRange)
            {
                enemyState = EnemyState.Walk;
                navAgent.SetDestination(detectedPlayer.transform.position);
            }
            else if (distanceToPlayer <= attackRange)
            {
                navAgent.isStopped = true;
                RotateTowardsPlayer();
                enemyState = EnemyState.Attack;
            }
        }
        else
        {
            detectedPlayer = null;
            enemyState = EnemyState.Idle;
        }
    }

    protected override void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.CompareTag("Bullet"))
        {
            enemyHP--;
            Destroy(other.gameObject);
            if (enemyHP <= 0)
            {
                enemyState = EnemyState.Die;
                navAgent.isStopped = true;
            }
            else
            {
                if (enemyState != EnemyState.GetHit)
                {
                    navAgent.isStopped = true; // 적을 중지
                    enemyState = EnemyState.GetHit;
                    animator.Play("GetHit", -1, 0f);
                }
            }
        }
    }

    private void OnDrawGizmos()
    {
        Gizmos.color = Color.yellow;
        Gizmos.DrawWireSphere(this.transform.position, detectionRadius);

        Gizmos.color = Color.red;
        Gizmos.DrawWireSphere(this.transform.position, attackRange);
    }
}