// Increments the strenght of the Lensflare lf when the Transform tr
// gets closer to the Lens flare

var lf : LensFlare;
var tr : Transform;

function Update() {
    lf.brightness = 1/Vector3.Distance(lf.transform.position, tr.position);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public LensFlare lf;
    public Transform tr;
    void Update() {
        lf.brightness = 1 / Vector3.Distance(lf.transform.position, tr.position);
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public lf as LensFlare

    public tr as Transform

    def Update():
        lf.brightness = (1 / Vector3.Distance(lf.transform.position, tr.position))