ScriptSceneManager

//Scene Manager Script
var gameTime            = 30;
static var score        = 0;
static var lives        = 3;
static var missleMode   =false;
var ObjectsToSpawn : Transform[] ;
var SpawnInterval   : float= 15;
var MaxObjectsSpawned : float= 3;
var MinObjectsSpawned : float= 1;
private var _NextSpawn : float=1;

function Start ()
{ InvokeRepeating ("CountDown", 1.0,1.0); }
{ _NextSpawn = Time.time + SpawnInterval; }

//Game Loop
function Update ()
{
    {
        if(lives <= 0)
        { Application.LoadLevel("Screen_Lose");
          lives = 3;
          PlayerPrefs.SetInt ("SCORE", score);
          score = 0; }

        if(gameTime <= 0)
        { Application.LoadLevel("Screen_Win");
          lives = 3;
          PlayerPrefs.SetInt ("SCORE", score);
          score = 0; }

        if(Time.time >= _NextSpawn)
        { int objectsToSpawn = Random.Range(MinObjectsSpawned, MaxObjectsSpawned);
        for(int i < 0; i < objectsToSpawn; ++i)
        { Instantiate(ObjectsToSpawn(Random.Range(0, ObjectsToSpawn.Length), transform.position. Quaternion.identity); } _NextSpawn = Time.time + SpawnInterval; }
    }
}
//Increase the Score when the player shoots an astroid
function AddScore ()
{ score +=1; }

//Subtract a life when the player collides with an asteroid
function SubtractLife ()
{ lives -=1; }

//Subtract a life when the player collides with an asteroid
function AddLife ()
{ lives +=1; }

//Subtract a life when the player collides with an asteroid
function LoadMissiles ()
{ missleMode=true; }

// Subtract one from the game timer every second
function CountDown ()
{ if(--gameTime == 0)
    { CancelInvoke ("CountDown"); } }

//Create and Display the HUD information for the player
function OnGUI ()
{ GUI.Label (Rect (10,10,100,20), "Score: " +score);
  GUI.Label (Rect (10,25,100,35), "Lives: " +lives);
  GUI.Label (Rect (10,50,100,20), "Time left: " +gameTime); }