using UnityEngine;

public class EnemySpawner : MonoBehaviour
{
    [SerializeField] private Enemy enemyPrefab;
    [SerializeField] private Transform[] spawnPoints;
    [SerializeField] private GameManager gameManager;
    [SerializeField] private float initialInterval = 2f;
    [SerializeField] private float minimumInterval = 0.5f;
    [SerializeField] private float intervalDecreasePerSecond = 0.02f;

    private float elapsedTime;
    private float nextSpawnTime;

    private void Update()
    {
        if (gameManager != null && !gameManager.IsPlaying)
        {
            return;
        }

        elapsedTime += Time.deltaTime;

        if (Time.time >= nextSpawnTime)
        {
            Spawn();
            nextSpawnTime = Time.time + CurrentInterval();
        }
    }

    private float CurrentInterval()
    {
        return Mathf.Max(minimumInterval, initialInterval - elapsedTime * intervalDecreasePerSecond);
    }

    private void Spawn()
    {
        var spawnPoint = spawnPoints[Random.Range(0, spawnPoints.Length)];
        Instantiate(enemyPrefab, spawnPoint.position, spawnPoint.rotation);
    }
}