Particle System is not Playing

[alpayoguz97]

I made a simple spaceship that has a particlesystem. When I press “space” button, spaceship should fly and particle system should instantiate and play. But it’s not playing. It seems in hierarchy as clone but not playing.

Those are codes :

void FlyShip()
    {


        if (Input.GetKey(KeyCode.Space))
        {

            rb.AddForce(Vector3.up * jumpForce);


            if (!takeoffSound.isPlaying)
            {

                // _rocketJetParticle is gameobject. 
                _rocketJetParticle = Instantiate(rocketJetParticle, new Vector3(transform.position.x, transform.position.y - 4, transform.position.z), transform.rotation);
                takeoffSound.Play();

            }

        }

        else 
        {
            //Destroy(_rocketJetParticle);
            takeoffSound.Stop();
            
        }


    }

[Megaboy238]

Your not really doing it the best way and my way is not the best either but easier.

1. Create Particle System
2. Make sure to uncheck ‘Play On Awake’
3. Add Particle system to rocket as child
4. Position Particle system on the rocket at the boosters
5. Add [SerializeField] private ParticleSystem _rocketJetParticle; to variable list.
6. Change void FlyShip() as per below.
7. Add Particle systems to script in inspector.

FlyShip()
{
if (Input.GetKey(KeyCode.Space))
{
rb.AddForce(Vector3.up * jumpForce);

            if (!takeoffSound.isPlaying)
            {
                // Start Particle System. 
                _rocketJetParticle.Play();
                takeoffSound.Play();

            }
        }
        else
        {
            _rocketJetParticle.Stop();
            takeoffSound.Stop();
        }
    }

[rh_galaxy]

You shouldn’t Instantiate (and destroy) the particle system all the time, just let it exist all the time as a child object and do play and stop.

I don’t know when you run FlyShip(), but if it’s in update this will result in creating a new particle system every frame, which is not what you want.

public ParticleSystem oThruster; //set in inspector by dragging the particle system to the variable
ParticleSystem.EmissionModule oThrusterEmission;
oThrusterEmission = oThruster.emission;
//then set on
oThrusterEmission.enabled = true;
//or off
oThrusterEmission.enabled = false;