How to play particles for a specific cloned game object in Unity?

Question

I am now making a simple game in Unity. There are cones falling from the sky and player needs to control a cube to dodge them. When a cone hit the cube, it decreases the cube's HP and emit some particles. Here is my script :

public class move : MonoBehaviour{

ParticleSystem particle;

static move instance;

void Start()
{
    particle = FindObjectOfType<ParticleSystem>();
    instance = this;
}

public static void PlayParticles()
{
    instance.particle.Play();
}
}

Second:

private void OnCollisionEnter(Collision collision)
{
    if (collision.gameObject.CompareTag("cone"))
    {
        move.PlayParticles();
        GameDirector.DecreaseHp(0.25f);

    }

}

The first script is attached to the cone prefab and the second one is attached to the cube. But the problem is that when a cone hit the cube, other cones emit particles instead of the cone that hit the cube. How can I solve the problem? Any help is greatly appreciated!

Answer 1

1. Remove cone-related logic from cube:

   private void OnCollisionEnter(Collision collision) { if (collision.gameObject.CompareTag("cone")) { // move.PlayParticles(); //------------ remove this line GameDirector.DecreaseHp(0.25f); }

   }

2. Make particle variable assignable in inspector - add [SerializeField] attribute. And assign it in inspector.

3. Add collision processing into your cone script.
4. Remove unnecessary statics from script.

Something like this:

public class move : MonoBehaviour
{

[SerializeField] //------- Add attribute and do not forget to assign PS in inspector
ParticleSystem particle;

//static move instance; //----- Remove

//Remove Start:
/*
    void Start()
    {
        particle = FindObjectOfType<ParticleSystem>();
        instance = this;
    }
*/
//Remove PlayParticles:
/*
    public void PlayParticles()
    {
        Change:
        instance.particle.Play();
    }
*/
    //---- Add collision check
    private void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.CompareTag("cube")) //----- Set proper tag to your cube
        {
            particle.Play();
        }

    }

}