粒子特效播放、完成后摧毁

public class ParticSysterm : MonoBehaviour
{
    private GameObject BoomExposion;
    private void Update()
    {
        //按下A播放粒子特效并摧毁物体
        if (Input .GetKeyDown (KeyCode.A ))
        {
            ParticleSystem shPTl = BoomExposion.GetComponent<ParticleSystem>();
            shPTl.Play();
            //使父对象为空
            shPTl.transform.parent = null;
            //粒子特效播放完成后摧毁
            Destroy(shPTl ,shPTl.main.duration );
            Destroy(gameObject );
        }
    }
}