[SOLVED]Multiple enemies Wave Spawner

Questions & Answers
1

Hi I have the following wave spawner script:

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class WaveSpawner : MonoBehaviour {

    public static int EnemiesAlive = 0;

    public Wave[] waves;
    
    public Transform spawnPoint;

    public float timeBetweenWaves = 5f;
    public float countdown = 2f;

    //public float timeBetweenEnemies = 0.5f;

    public Text waveCountdownText;
    public Text wavesText;

    private int waveIndex = 0;

    private void Update()
    {
        if(EnemiesAlive > 0)
        {
            return;
        }

        if(countdown <= 0f)
        {
            StartCoroutine(SpawnWave());
            countdown = timeBetweenWaves;
            return;
        }

        countdown -= Time.deltaTime;

        countdown = Mathf.Clamp(countdown, 0f, Mathf.Infinity);

        waveCountdownText.text = string.Format("{0:00.00}", countdown);

        wavesText.text = (waveIndex + 1) + "/" + waves.Length;
    }

    IEnumerator SpawnWave()
    {
        //Debug.Log("Wave Incoming");

        Wave wave = waves[waveIndex];

        for (int i = 0; i < wave.count; i++)
        {
            SpawnEnemy(wave.enemy);
            yield return new WaitForSeconds(1f / wave.rate);
        }

        waveIndex++;
        PlayerStats.Rounds++;

        if(waveIndex == waves.Length)
        {
            Debug.Log("LEVEL WON!");
            this.enabled = false;
        }
    }

    void SpawnEnemy(GameObject enemy)
    {
        Instantiate(enemy, spawnPoint.position, spawnPoint.rotation);
        EnemiesAlive++;
    }

    //void DestroyEnemyOnTargetReach()
    //{
    //    Destroy(gameObject);
    //}
}

I am trying to make that I can spawn multiple types of enemies in one wave but can’t find a solution.
I have tried this solution but it didn’t work or I could’t implement it as it should. Anyone have a solution for me ?

2

Wave is a simple class like this:

using UnityEngine;
public class Wave
{
    public GameObject enemy;
    public int count;
    public float rate;
}

====================================

I made like this:

using UnityEngine;
[System.Serializable]
public class EnemyBlueprint {

    public GameObject enemy;
    public int enemyCount;
    public float enemyRate;
}

and changed Wave class to this:

using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
public class Wave {
    public EnemyBlueprint[] enemyWave;
    public int waveCount;
    public float waveRate;
}

changed the SpawnWave() to this:

     IEnumerator SpawnWave()
    {
        //Debug.Log("Wave Incoming");
        Wave wave = waves[waveIndex];
        //EnemyBlueprint eb = enemies[enemyIndex];

        for (int a = 0; a < wave.waveCount; a++)
        {
            yield return new WaitForSeconds(1f / wave.waveRate);

            for (int i = 0; i < enemies.enemyCount; i++)
            {
                SpawnEnemy(enemies.enemy);
                yield return new WaitForSeconds(1f / enemies.enemyRate);
            }
        }

        waveIndex++;
        PlayerStats.Rounds++;

        if (waveIndex == waves.Length)
        {
            Debug.Log("LEVEL WON!");
            this.enabled = false;
        }
    }

Now I can choose different enemies in a wave but when I start the game, I get null reference exception and no enemy is spawned