Particle system activate onTriggerEnter2D

Questions & Answers
1

I’ve tried converting this:

public class ParticleTrigger : MonoBehaviour
{
[SerializeField]
ParticleSystem speedBoostParticle = null;

public void Update()
{
    if (Input.GetKeyDown(KeyCode.Space))
    {
        speedBoostParticle.Play();
    }
}

}
Into this

public class ParticleTrigger : MonoBehaviour
{
[SerializeField]
ParticleSystem speedBoostParticle = null;

public void OnTriggerEnter2D(Collider2D other)
{
    if (other.gameObject.CompareTag("Player"))
    {
        speedBoostParticle.Play();
    }
}

}

But for some reason the OnTriggerEnter thing does not work. Also a note the object which this script is on is destroyed 0.1 seconds after collision with player as it is a powerup pickup

2

Do you have a rigidbody on your player?

Note: Both GameObjects must contain a Collider component. One must have Collider.isTrigger enabled, and contain a Rigidbody. If both GameObjects have Collider.isTrigger enabled, no collision happens. The same applies when both GameObjects do not have a Rigidbody component.

Why it Destroys its should come from an another script or if the particle system is on the same GameObject as this script. just use a different Stop Action on the particle system.
you find the options in a dropdown in the particle settings its propably set to Destroy… try none or Callback and destroy or reuse If you need.

3

Either one of the objects has to have Trigger collider and also a rigid body.

//Declare the particle effect game object and put it in the editor.
public GameObject effect_par;

//Inside the ontrigger
private void OnTriggerEnter2D(Collider2D col)
{
    if (col.tag == "Player")
        Instantiate(effect_par, transform.position, transform.rotation);
}