Can someone help me fix my Javascript for Flickering Light?

My best guess is, to remove "FlashingLight.enabled = false;", and put "FlashingLight.active = false;"

(This is untested)

I appreciate your feedback on this!

I tried this but for some reason this gave me:

Assets/iTween/FlashingLight.js(16,23): BCE0020: An instance of type 'UnityEngine.Component' is required to access non static member 'active'.

I'd imagine you're getting the error because your FlashingLight variable is being defined within your Start function. If you define it in there, it won't be remembered when Update rolls around.

Move your variable declaration outside of Start.

(I know nothing of JavaScript, but I still think this might be the reason why.)

Additionally, if this script's being placed on the same GameObject with the light on it, I'd suggest you do something along the lines of:

 FlashingLight = gameObject.GetComponent(Light);

This would help prevent any errors revolving around not having a Light to modify.

I found, with a bunch of looking around, a really useful script. It uses different methods of creating a flicker, either random or "pulsing" with many uses. You can attach the script to any light in the scene and change the values using the interface. This is what I use (javascript):

 // Properties
 var waveFunction : String = "sin"; // possible values: sin, tri(angle), sqr(square), saw(tooth), inv(verted sawtooth), noise (random)
 var base : float = 0.0; // start
 var amplitude : float = 1.0; // amplitude of the wave
 var phase : float = 0.0; // start point inside on wave cycle
 var frequency : float = 0.5; // cycle frequency per second
  
 // Keep a copy of the original color
 private var originalColor : Color;
  
 // Store the original color
 function Start () {
     originalColor = GetComponent(Light).color;
 }
  
 function Update () {
     var light : Light = GetComponent(Light);
     light.color = originalColor * (EvalWave());
 }
  
 function EvalWave () {
     var x : float = (Time.time + phase)*frequency;
     var y : float;
  
     x = x - Mathf.Floor(x); // normalized value (0..1)
  
     if (waveFunction=="sin") {
         y = Mathf.Sin(x*2*Mathf.PI);
     }
     else if (waveFunction=="tri") {
         if (x < 0.5)
             y = 4.0 * x - 1.0;
         else
             y = -4.0 * x + 3.0;  
     }    
     else if (waveFunction=="sqr") {
         if (x < 0.5)
             y = 1.0;
         else
             y = -1.0;  
     }    
     else if (waveFunction=="saw") {
         y = x;
     }    
     else if (waveFunction=="inv") {
         y = 1.0 - x;
     }    
     else if (waveFunction=="noise") {
         y = 1 - (Random.value*2);
     }
     else {
         y = 1.0;
     }        
     return (y*amplitude)+base;     
 }

You are very close!

3 problems:

1) like The Stick said: you need to move the var FlashingLight outside of the start method. you need to make an 'instance variable' but putting it above the start method, not inside of it. Also you never assign the FlashingLight object to anything. You simply instantiate it, you do not add the component to the gameobject you are on, and you dont look it up using GetComponent() or anything. This Flashing Light object isnt in the game.

2) You do not have an 'else' in you if statement with the random number. Add that

3) (might not be an issue if the Light component is what does the rendering on the light) Simply disabling the Light script may not disable the visuals of that object. You need to do one of 2 things, instead of FlashingLight.enabled = false, you can do FlashingLight.gameobject.SetActive(false), or you need to make FlashingLight the SpriteRenderer or whatever the visual component is! So this second point may not change if the 'Light' component is the thing that renders the image.

 Light flashingLight; //Instantiate the variable outside functions so that all functions can use it
     
 function Awake () 
 {
     flashingLight = gameObject.GetComponent<Light>(); //Assign the variable in awake to the component attached to this game object.  If you did not add a light to this game object, add it here
     FlashingLight.enabled = false;
 }
 
 function FixedUpdate ()
 {
 
     var RandomNumber = Random.value;
     ;
 
     if(RandomNumber<=.7)
     {
         FlashingLight.enabled = true;
 
         FlashingLight.enabled=false;
     }
 }