[SOLVED]Multiple enemies Wave Spawner

Question

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 ?

Answer 1

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

[SOLVED]Multiple enemies Wave Spawner

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