1

I’m created a particle system prefab used as forward thrusters on a space ship and had them instantiated into an array and follow the ship. I wanted the thrusters to be destroyed when I release the forward key.

The way I have it now does not work on destroying the Particle System. How do I destroy all the particle system within an array that stored in a variable in another function?

Below I have 2 functions one for starting the thrusters and another for destroying them. The starting function works perfectly when forward key is pressed.

using UnityEngine;
using System.Collections;

public class thrusterParticlesControl : MonoBehaviour {

	public ParticleSystem[] forwardThrusters;
	public GameObject[] forwardThrustersPos;

	private float forwardInput;
	private ParticleSystem[] instanceForwardThrusters;
	private bool instanceForwardThrustersExists;


	// Update is called once per frame
	void Update () 
	{
		//Get user input
		forwardInput = Input.GetAxis ("Vertical");

		// If forward key is press, start thrusters, and destroy thrustsers([particle systems) when key is released
		if(forwardInput > 0f)
		{
			startForwardThrusters();
		}
		else
		{
			stopForwardThrusters();
		}
	}

	// Instantiate and store Particle system prefab is a variable.
	void startForwardThrusters()
	{
		instanceForwardThrusters = new ParticleSystem[forwardThrusters.Length];

			if (instanceForwardThrustersExists == false) 
			{
				for (int i =0; i<forwardThrusters.Length; i++)
				{
				instanceForwardThrusters  <em>= (ParticleSystem)Instantiate (forwardThrusters <em>, forwardThrustersPos _.transform.position, forwardThrustersPos *.transform.rotation);*_</em></em>

instanceForwardThrusters .transform.parent = forwardThrustersPos .transform;
* instanceForwardThrustersExists = true;*
* }*

* }*
* }*

* // Destroy the instantiated prefabs from the startForwardThrusters function*
* void stopForwardThrusters()*
* {*
* if (instanceForwardThrustersExists == true)*
* {*
* for (int i = 0; i < forwardThrusters.Length; i++)*
* {*
Destroy(instanceForwardThrusters_); // this instanceForwardThrusters variable has nothing in it, or i’m doing this incorrectly
* instanceForwardThrustersExists = false;
}
}
}
}*_

2

Thank you for the suggestion, it was a better option then creating and destroying particle systems.

This is what I used instead and attached the script to each particle system. It does what I want.

void startForwardThrusters()
	{
		ParticleSystem thrusters = (ParticleSystem)gameObject.GetComponent("ParticleSystem");
		thrusters.enableEmission = true;


	}
	
	
	void stopForwardThrusters()
	{
		ParticleSystem thrusters = (ParticleSystem)gameObject.GetComponent("ParticleSystem");
		thrusters.enableEmission = false;


	}