Unity灯光闪烁

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AlarmLight : MonoBehaviour {
    public bool alarmOn;
    public float turnSpeed;
    private float highIntensity = 2f;
    private float lowIntensity = 0;
    private float targetIntensity = 0;
    private Light alarmLight;

	void Start () {
        alarmLight = GameObject.FindWithTag("AlarmaLight").GetComponent();
        targetIntensity = highIntensity;
    }
	 
	void Update () {
        if (alarmOn)
        {
            alarmLight.intensity = Mathf.Lerp(alarmLight.intensity,targetIntensity,Time.deltaTime*turnSpeed);
            if (Mathf.Abs(targetIntensity-alarmLight.intensity)<=0.05f)
            {
                targetIntensity = targetIntensity == highIntensity ? lowIntensity : highIntensity;
            }
        }
        else
        {
            alarmLight.intensity = Mathf.Lerp(alarmLight.intensity, lowIntensity, Time.deltaTime * turnSpeed);
            if (alarmLight.intensity<0.1f)
            {
                alarmLight.intensity = lowIntensity;
            }
        }
	}
}