How to delay instantiations

[arthurconnor100]

I am trying to make a cool looking explosion, but when I instantiate each phase of the explosion it all happens at once.
How would I delay each instantiation?

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

public class DestroyByContact : MonoBehaviour {

public GameObject boom;

public GameObject boom2;

public GameObject boom3;

public GameObject playerBoom;

void OnTriggerEnter(Collider other) {

    

    if (other.tag == "Boundary") {

        return;

    }

    Instantiate (boom, transform.position, transform.rotation);

    Instantiate(boom2, transform.position, transform.rotation);

    Instantiate(boom3, transform.position, transform.rotation);

    if (other.tag == "Player") {

        Instantiate (playerBoom, other.transform.position, other.transform.rotation);

    }

    Destroy(other.gameObject);

    Destroy(gameObject);

}

}

[alankemp]

You could use a coroutine which would allow you to have delays between actions:

IEnumerator ExplosionsTask()
{
     Instantiate (boom, transform.position, transform.rotation);
     yield return new WaitForSeconds(1.0f)

     Instantiate(boom2, transform.position, transform.rotation);
     yield return new WaitForSeconds(1.0f)

     Instantiate(boom3, transform.position, transform.rotation);

     if (other.tag == "Player") {
         yield return new WaitForSeconds(1.0f)
         Instantiate (playerBoom, other.transform.position, other.transform.rotation);
     }
     Destroy(other.gameObject);
     Destroy(gameObject);
}

And then start the coroutine like this in your OnTriggerEnter(…):

StartCoroutine(ExplosionTask());

Its worth noting that the coroutine is attached to the gameobject that creates it, so if you let the call to Destroy(gameObject); in OnTriggerEnter(…) it would stop the coroutine as well.