Detect the start of a particle burst emission

Question

Hi,

I have a particle system that only emits in bursts w$$anonymous$$ch are random in execution.

Is there a way to detect the burst start? I want to play a sound when that happens.

I know I can get the array holding the burst events, but since they appear randomly and sometimes are omitted that does not help me much.

Answer 1

Answer by CKN · Dec 04, 2022 at 03:28 AM

Hi @alexxUID, I have come across t$$anonymous$$s issue myself and have found a solution. It's not pretty but it works:

 using UnityEngine;
 
 namespace Example
 {
     public class BurstAudioFeedbackExample : MonoBehaviour
     {
         [SerializeField] private ParticleSystem particle;
         [SerializeField] private AudioSource source;
 
         private int particleCount;
 
         private void Update()
         {
             // Play audio when the count is greater than internal value
             if (particle.particleCount > particleCount && !source.isPlaying)
                 source.Play();
 
             // set internal value after check
             particleCount = particle.particleCount;
         }
     }
 }

In a nutshell, it will play the audio before updating an internal count, meaning every time a burst (increase in particle count) occurs, the audio will play.

Hopefully, someone has a better method.

Add comment · Show 1 · Share

alexxUID · Dec 05, 2022 at 07:38 AM 0

Share

Thanks, but t$$anonymous$$s is very unreliable and even wrong since you expect all bursts to have the same amount and you expect the next burst to appear before all particles died. (> and not >= is the problems in your code).

I should have made it more clear that I was looking for some kind of event and not a solution like yours.

Answer 2

Answer by alexxUID · Dec 05, 2022 at 10:01 AM

In the end I haven't used the sound at all but the only solution to me seemed creating the bursts myself via script at runtime with ParticleSystem.EmissionModule.SetBurst

Add comment · Share

Detect the start of a particle burst emission

2 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions