koobas.hobune.stream
How to set particle emission rate at run time?
ParticleSystem p; p.emission.rateOverTime = 20f;
Keep on telling me that I can't do that, tried other solutions like: ParticleSystem p; var em = p.emission; em.rateOverTime = 20f; p.emission = em;
Does not work either. How do you change particle rate over time during run time?
Well, I'm a bit late (3 years) BUT, because I was in the situation, I have a solution! Basically, you have to manually emit the number of particle you want and disable the particle generation beforehand.
(Rate over Time = 0)
In my example, I want to set the number of particles according to my speed :
using UnityEngine;
public class ExempleParticuleSetter : MonoBehaviour
{
private ParticleSystem particleSystem;
//In my exemple, x = min & y = max
[SerializeField] private Vector2 minMaxEmmiter = new Vector2(0,80);
[SerializeField] private Vector2 minMaxSpeedDesire = new Vector2(80,200);
//Other variable I need
private Rigidbody rb;
private void Start()
{
particleSystem = GetComponentInChildren<ParticleSystem>();
rb = GetComponent<Rigidbody>();
}
private void Update()
{
//Get the number of particle to emit by some little calculation
var speed = rb.velocity.magnitude;
var t = (speed - minMaxSpeedDesire.x) / (minMaxSpeedDesire.y);
var particleToEmit = (int) Mathf.Lerp(minMaxEmmiter.x, minMaxEmmiter.y, t);
//Here I Emit my particle
particleSystem.Emit(particleToEmit);
}
}
In this example, when the speed is below "$$anonymous$$$$anonymous$$axSpeedDesire.x" is equal to 0 and so, the Lerp function will set the number of particle "particleToEmit" (I could have set a better name) to 0, and so, no emission.
But in other type of script, you can put a public Boolean et toggle it within other scripts. this way, the last particle will die and don't emit, like this :
if (urBoolean)
{
particleSystem.Emit(particleToEmit);
}
