#pragma strict

var bullet : bullet;
var health : int = 5;
var ready : boolean = true;

private var fireDir : Transform;
private var clicked : boolean = false;
private var closestEnemy : GameObject;
private var liser : Transform;
    
function Start () {
    if(gameObject.tag == 'null')
        ready = false;
        
    fireDir = transform.Find('fire').transform;
    liser   = transform.Find('liser').transform;
}

function Update () {
    if(ready)
        fire();

    if(clicked && gameObject.tag == 'Player') {
        transform.Rotate(0, -Input.GetAxis('Mouse Y') * 5.0, 0);
        liser.active = true;
    }
    
    // A.I.
    if(gameObject.tag == 'enemy')
    {
        FindClosestEnemy(); 
        
        if(closestEnemy)
        {
            var lookPos = closestEnemy.transform.position - transform.position;
                lookPos.y = 0;
            var rotation = Quaternion.LookRotation(lookPos);
            transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * 1);
        }
    }
}

function OnMouseDown () {
    clicked = true;
}

function OnMouseUp() {
    clicked = false;
    liser.active = false;
}

function fire() {
    ready = false;
    var xbullet = Instantiate(bullet, fireDir.position, Quaternion.identity);
        xbullet.rigidbody.AddForce(fireDir.forward * 150);
        xbullet.wparent = gameObject.tag;
    
    yield WaitForSeconds(1);
    ready = true;
}

function FindClosestEnemy () {
    var gos : GameObject[];
        gos = GameObject.FindGameObjectsWithTag("null"...;
        gos += GameObject.FindGameObjectsWithTag("Player"...; 
    
    var distance = Mathf.Infinity; 
    var position = transform.position; 
    
    for (var go : GameObject in gos)  { 
        var diff = (go.transform.position - position);
        var curDistance = diff.sqrMagnitude; 
        if (curDistance < distance) { 
            closestEnemy = go; 
            distance = curDistance; 
        } 
    } 
}