Flash light script

#pragma strict

//Variables START

//Light Source && Battery Life
var flashlightLightSource : Light;
var lightOn : boolean = true;
var lightDrain : float = 0.1;
var batteryLife : float = 0.0;
var maxBatteryLife : float = 2.0;

//Sound Clips
//var soundTurnOn : AudioClip;
//var soundTurnOff : AudioClip;

//Variables END

function Start()
{
        batteryLife = maxBatteryLife;
        flashlightLightSource = GetComponent(Light);
}

function Update()
{
        if(lightOn && batteryLife >= 0)
        {
                batteryLife -= Time.deltaTime * lightDrain;
        }

        if(batteryLife <= 0)
        {
                batteryLife = 0;
                lightOn = false;
        }

        if(batteryLife <= 1)
        {
            flashlightLightSource.light.intensity = 0.6;
        }

        if(batteryLife <= 0.5)
        {
            flashlightLightSource.light.intensity = 0.3;
        }

        if(Input.GetKeyUp(KeyCode.F))
        {
                toggleFlashlight();
               // toggleFlashlightSFX();

                if(lightOn)
                {
                        lightOn = false;
                }
                else if(!lightOn && batteryLife >= 0)
                {
                        lightOn = true;
                }
        }
}

function toggleFlashlight()
{
        if(lightOn)
        {
                flashlightLightSource.enabled = false;
        }
        else
        {
                flashlightLightSource.enabled = true;
        }
}

/*function toggleFlashlightSFX()
{
        if(flashlightLightSource.enabled)
        {
                audio.clip = soundTurnOn;
        }
        else
        {
                audio.clip = soundTurnOff;
        }

        audio.Play();
}*/