PowerUpController.cs

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

public class PowerUpController : MonoBehaviour
{
    public GameObject powerup;
    public Vector2 spawnValues;
    public int powerupCount;
    public float spawnWait;
    public float startWait;
    public float waveWait;



    void Start()
    {
        StartCoroutine(SpawnWaves());
    }

    IEnumerator SpawnWaves()
    {
        yield return new WaitForSeconds(startWait);
        while (true)
        {
            for (int i = 0; i < powerupCount; i++)
            {
                Vector2 spawnPosition = new Vector2(Random.Range(-spawnValues.x, spawnValues.x), spawnValues.y);
                Quaternion spawnRotation = Quaternion.identity;
                Instantiate(powerup, spawnPosition, spawnRotation);
                yield return new WaitForSeconds(spawnWait);
            }
            yield return new WaitForSeconds(waveWait);
        }
    }
}