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Question by Whayman · May 12, 2017 at 12:05 PM · prefabrandomspawnspawningrandom.range

How to spawn a prefab every 5 second randomly between a set range?

I'm struggling to spawn a prefab in without it being a gameobject, and I want it one to spawn in every 5 seconds between a set range? any help would be appreciated!

public class obstacle : MonoBehaviour {

 private Rigidbody2D rb2d;
 private float obstacleSpawnCounter;
 public Vector3 spawnPosition;
 public GameObject spike;

 // Use this for initialization
 void Start () {

     rb2d = GetComponent<Rigidbody2D>();
     rb2d.isKinematic = true;
     GetComponent<SpriteRenderer>().sortingOrder = 4;

 }
 
 // Update is called once per frame
 void Update () {
     if (Input.GetMouseButtonDown(0))
     {
         if (rb2d.isKinematic)
             rb2d.isKinematic = false;
     }
     obstacleSpawnCounter += Time.deltaTime;
     if (obstacleSpawnCounter > 5)
     {
         SpawnObstacle();
         obstacleSpawnCounter -= 5;
     }
     this.transform.Translate(0, 0.06f, 0);
 }

 public void SpawnObstacle()
 {
     Instantiate(spike, spawnPosition, Quaternion.identity);
 }

}

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avatar image Matthewj866 · May 12, 2017 at 02:56 PM 0
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Hi there, could you elaborate on your question a little more? I'm not entirely sure I understand what you're after.

avatar image Whayman Matthewj866 · May 12, 2017 at 03:33 PM 0
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Hi, I basically want to spawn a prefab onto the scene without it being attached to an empty gameobject and to spawn randomly between a set range every 5 seconds. At the moment it will only spawn when I make an empty gameobject and attach the prefab and script but it glitches every time it spawns and spawns like 20, any ideas??

avatar image Matthewj866 Whayman · May 12, 2017 at 03:49 PM 0
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Ok, you need to give it the spike prefab not an empty GameObject I'm still not entirely sure what the random value is for but $$anonymous$$ath.Random() exists so look into that.

When resetting a float responsible for handling deltaTime it's best to reset using 0 rather than removing the value you think it has, as doing it via the latter can create irregular behaviour.

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