scale light range with parent transform on runtime

scaleLightRange

using UnityEngine;
using System.Collections;

public class ScaleLightRange : MonoBehaviour {

	Light _light;
	float _onAwakeRange;
	float _onAwakeScaleFactor;

	void Awake () {
		_light = GetComponent<Light>();
		_onAwakeRange = _light.range;
		_onAwakeScaleFactor = transform.lossyScale.magnitude;
	}
	
	void Update () {
		var ratio = transform.lossyScale.magnitude / _onAwakeScaleFactor;
		_light.range = _onAwakeRange * ratio;
	}
}