Among the multiple spawned enemies, only one throws a spear

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1

I created a spawn point and spawned several enemies.

However, I wrote a script for these enemies to stop and throw spears when they see the player’s unit. However, among these enemies, only the enemy spawned at spawn point 2 performs this action, and the remaining enemies do not throw spears or stop moving. came.

What’s the problem?

public class Demon : MonoBehaviour
{
    public float speed = 0.3f; // 적의 이동 속도
    public float detectionRange = 0.2f; // 플레이어 감지 범위
    public GameObject spearPrefab; // 투척 무기 프리팹
    public Transform firePoint; // 'spear'를 발사할 위치
    public float curTime = 0f;
    public float maxTime = 0.3f;
    private Rigidbody2D rb;
    private bool isMoving = true;
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        curTime = 0f;
    }
    void Update()
    {
        TimeCnt();
        if (isMoving)
        {
            // 플레이어 감지 체크
            CheckForPlayer();
            Move();
        }
        else
        {
            rb.velocity = Vector2.zero;
        }
        PlayerAttack();
    }
    void CheckForPlayer()
    {
        GameObject player = GameObject.FindGameObjectWithTag("player_unit");
        if (player != null)
        {
            // 플레이어와의 거리 계산
            float distanceToPlayer = Vector2.Distance(transform.position, player.transform.position);
            // 플레이어와의 거리가 detectionRange 이하일 경우 이동을 멈추고 'spear'를 발사
            if (distanceToPlayer <= detectionRange)
            {
                isMoving = false;              
            }
        }
    }
    void PlayerAttack()
    {
        GameObject player = GameObject.FindGameObjectWithTag("player_unit");
        float distanceToPlayer = Vector2.Distance(transform.position, player.transform.position);
        if (distanceToPlayer <= detectionRange && curTime >= maxTime)
        {
            LaunchSpear();
            curTime = 0;
        }
    }
    void TimeCnt()
    {
        curTime += Time.deltaTime;
    }
    void Move()
    {
        // Rigidbody2D를 이용한 이동
        rb.velocity = new Vector2(0f, -speed);
    }
    void LaunchSpear()
    {
        // 'spear' 프리팹을 'fire_point'에서 생성
        GameObject spear = Instantiate(spearPrefab, firePoint.position, firePoint.rotation);
        // 몇 초 후에 'spear' 오브젝트 파괴 (예: 2초 후에 파괴)
        Destroy(spear, 2f);
    }
}