ParticleSystem.isPlaying

Description

Determines whether the Particle System is playing.

isPlaying returns true when the Particle System happens on each frame. The Particle System has been stopped when isPlaying returns false.

using UnityEngine;

// A particle sprite example of isPlaying. A button is created
// that shows whether the Particle System is running.  If not, then
// it can be started.  If it is running then it can be stopped.

using UnityEngine;

public class ExampleClass : MonoBehaviour
{
    public Texture2D tex;
    private ParticleSystem ps;
    private Sprite sprite;

    void Start()
    {
        ps = GetComponent<ParticleSystem>();
        sprite = Sprite.Create(tex, new Rect(0.0f, 0.0f, tex.width, tex.height), Vector2.zero);

        var textureSheetAnimation = ps.textureSheetAnimation;
        textureSheetAnimation.enabled = true;
        textureSheetAnimation.mode = ParticleSystemAnimationMode.Sprites;
        textureSheetAnimation.AddSprite(sprite);
    }

    void OnGUI()
    {
        if (ps.isPlaying)
        {
            if (GUI.Button(new Rect(10, 70, 150, 50), "Stop and clear"))
            {
                ps.Stop(true, ParticleSystemStopBehavior.StopEmittingAndClear);
            }
        }
        else
        {
            if (GUI.Button(new Rect(10, 70, 150, 50), "Play"))
            {
                ps.Play(false);
            }
        }
    }
}