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Question by CheeseFace1st · 4 days ago · timespawninvokerepeatinginvoke

Making a spawner adjust its spawnrate over time

I'm trying to make a spawner spawn enemies faster over time. However, I'm having a little difficulty figuring out a repeating method that would speed up at a controlled rate. This was one of my attempts.

     public GameObject prefab; //enemy that will spawn
     
     public float startSpawn; //when the spawner will activate
 
     //spawner management variables
     public float spawnRate;
     public float defaultRate;
     public float timeReduction;
     public float minRate;
 
     //range for where enemy will spawn
     public float minHeight;
     public float maxHeight;
 
     //spawns in enemy while reducing the time for the next enemy to spawn
     public void Spawn()
     {
         GameObject enemy = Instantiate(prefab, transform.position, Quaternion.identity);
 
         enemy.transform.position += Vector3.up * Random.Range(minHeight, maxHeight);
 
         if (spawnRate > 1)
         {
             spawnRate -= timeReduction;
         }              
     }
 
     //when player hits start button, game manager enables spawner
     public void OnEnable()
     {
         InvokeRepeating(nameof(Spawn), startSpawn, spawnRate);
     }
 
     //spawner is disabled when player dies
     private void OnDisable()
     {
         spawnRate = defaultRate;
 
         CancelInvoke(nameof(Spawn));
     }
 }

I've tried using IEnumerator/WaitForSeconds, but it ended up with enemies spawning uncontrollably because it wouldn't pause my spawn method. I'm still every new to C# and unity, so I'm not sure where to go from here. Any advice would be great. Thank you!

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Answer by tormentoarmagedoom · 3 days ago

Hello.

There are different ways to get it. I would use an Ienumerator, with somethign like this:

 Start or somewhere()
 }
 StartCoroutine (SpawnControl);
 }
 
 Ienumerator SpawnControl()
 {
   while (IWantToSpawn==true)
   {
   SpawnEnemies();
   yield return new Waitforseconds (SpawnDelay);
   }
 }

 void SpawnEnemies()
 {
 Spawn stuff
 }
 

So you only need to control the bool IWantToSpawn and the float SpawnDelay

And call the corutine SpawnControl again if you stopped spawning.

Bye!

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