ParticleSystem.subEmitters

Description

Access the particle system sub emitters module.

Particle system modules do not need to be reassigned back to the system; they are interfaces and not independent objects.

using UnityEngine;
using System.Collections;

// A simple example showing access.
public class ExampleClass : MonoBehaviour {

    public ParticleSystem mySubEmitter;

    void Start() {
        ParticleSystem ps = GetComponent<ParticleSystem>();
        var sub = ps.subEmitters;
        sub.enabled = true;
        sub.AddSubEmitter(mySubEmitter, ParticleSystemSubEmitterType.Death, ParticleSystemSubEmitterProperties.InheritNothing);
    }
}

using UnityEngine;

// An example showing how to create 2 particle systems; one as a sub-emitter.
public class SubEmitterDeathExample : MonoBehaviour
{
    void Start ()
    {
        // A simple particle material with no texture.
        Material particleMaterial = new Material(Shader.Find("Particles/Alpha Blended Premultiply"));

        // Create a green particle system.
        var rootSystemGO = new GameObject("Particle System");
        rootSystemGO.transform.Rotate(-90, 0, 0); // Rotate so the system emits upwards.
        var rootParticleSystem = rootSystemGO.AddComponent<ParticleSystem>();
        rootSystemGO.GetComponent<ParticleSystemRenderer>().material = particleMaterial;
        var mainModule = rootParticleSystem.main;
        mainModule.startColor = Color.green;
        mainModule.startSize = 0.5f;

        // Create our sub-emitter and set up bursts.
        var subSystemGO = new GameObject("Particle System");
        var subParticleSystem = subSystemGO.AddComponent<ParticleSystem>();
        subSystemGO.GetComponent<ParticleSystemRenderer>().material = particleMaterial;
        var subMainModule = subParticleSystem.main;
        subMainModule.startColor = Color.red;
        subMainModule.startSize = 0.25f;
        var emissionModule = subParticleSystem.emission;
        emissionModule.SetBursts(new ParticleSystem.Burst[] { new ParticleSystem.Burst(0.0f, 10) }); // We will emit 10 particles upon death.

        // Set up the sub-emitter.
        subSystemGO.transform.SetParent(rootSystemGO.transform);
        var subEmittersModule = rootParticleSystem.subEmitters;
        subEmittersModule.enabled = true;
        subEmittersModule.AddSubEmitter(subParticleSystem, ParticleSystemSubEmitterType.Death, ParticleSystemSubEmitterProperties.InheritNothing);
    }
}