Unity通过代码设置ParticalSystem参考

通过代码设置ParticalSystem的写法参考如下：

publicclassSetParticlRateSpeed : SetByFloatInterval
{
	[SerializeField]
	float rateMulti = 1;
	[SerializeField]
	float speedMulti = 1;

	ParticleSystem particle;

	voidStart()
	{
		particle = GetComponent<ParticleSystem>();

		var emission = particle.emission;
		emission.rateOverTime = rateMulti * floatValue;

		var main = particle.main;
		main.startSpeed = speedMulti * floatValue;
	}

	voidUpdate()
	{
		var emission = particle.emission;
		float val = emission.rateOverTime.constant;
		val = Mathf.Lerp(val, rateMulti * floatValue, Time.deltaTime * 5);
		emission.rateOverTime = val;

		var main = particle.main;
		main.startSpeed = Mathf.Lerp(main.startSpeed.constant, speedMulti * floatValue, Time.deltaTime * 5);
	}
}