using System.Collections;
using UnityEngine;

public class EnemySpawner : MonoBehaviour
{
    [Header("Enemy")]
    [SerializeField]
    private GameObject enemyPrefab;

    [Header("Spawn")]
    [SerializeField]
    private Transform spawnPoint;

    [SerializeField]
    private float minSpawnDelay = 0.5f;

    [SerializeField]
    private float maxSpawnDelay = 2f;

    private void Start()
    {
        if (enemyPrefab == null)
        {
            Debug.LogError(
                "EnemySpawner: Kein Enemy-Prefab zugewiesen!",
                this
            );

            return;
        }

        if (spawnPoint == null)
        {
            Debug.LogError(
                "EnemySpawner: Kein SpawnPoint zugewiesen!",
                this
            );

            return;
        }

        StartCoroutine(SpawnLoop());
    }

    private IEnumerator SpawnLoop()
    {
        while (true)
        {
            float delay = UnityEngine.Random.Range(
                minSpawnDelay,
                maxSpawnDelay
            );

            yield return new WaitForSeconds(delay);

            SpawnEnemy();
        }
    }

    private void SpawnEnemy()
    {
        Instantiate(
            enemyPrefab,
            spawnPoint.position,
            spawnPoint.rotation
        );
    }
}