Bullet script

//bullet script

//Inspector variables
var bulletSpeed : float = 15.0;   // Speed of bullet
var bulletLimit : float = 10.0;   // where will bullet dissapear
var explosion   : Transform;
var sceneManager: GameObject;   // load manager script for scoring

//Private Variable

// Game loop
function Update ()
{
 transform.Translate(0,bulletSpeed*Time.deltaTime,0);

 // check if object is off screen
 if (transform.position.y>= bulletLimit)
  {
  Destroy (gameObject);
  }
}
function OnTriggerEnter (other :Collider)
{
// check for asteriod
if (other.gameObject.tag =="astroid")
   
{

//reset enermy position
other.transform.position.y = 10.0;
    other.transform.position.x = Random.Range(-10,10);
   
    // explosion on impact
    if (explosion)
    {
    Instantiate (explosion,transform.position,transform.rotation);
    }
    // Tell score manager that enery is destroy and to add a point
sceneManager.transform.GetComponent("ScriptSceneManager").AddScore();


// get rid of the bullet after it hit a target
Destroy (gameObject);

}
}