Question Spawn Particle Programmatically

Is it possible to add a particle one at a time?
For example, can I trigger one particle to spawn when an event happens, e.g. trigger it from a script?
This would be similar with let's say array.push() in JS.

 

There is

SendEvent()

method, however standard event is processed once at the end of frame, so the last call is used when you use it multiple times per frame (per instance).
If you need more than one, then there is direct link method or graphics buffer.
https://forum.unity.com/threads/new-feature-direct-link.1137253/

 

I connected the Event directly to Initialize and sent via script an event to OnPlay

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.VFX;
3.  
4. public class oneParticle : MonoBehaviour
5. {
6.     public VisualEffect visualEffect;
7.  
8.     // Start is called before the first frame update
9.     void Start()
10.     {
11.         visualEffect = visualEffect.GetComponent<VisualEffect>();
12.         InvokeRepeating("callFunction", 0, 1);
13.     }
14.  
15.     void callFunction(){
16.         var eventAttribute = visualEffect.CreateVFXEventAttribute();
17.         visualEffect.SendEvent("OnPlay", eventAttribute);
18.         Debug.Log("Particle Spawned");
19.     }
20. }