Tower defense w unity

//SKRYPT NA OGÓLNY RUCH GŁOWICY(TURETU) CZAS I KILKA INNYCH RZECZY KTÓRE MNIE DENERWUJĄ
#pragma strict
//zmienne globalne
var myProjectile : GameObject;
var reloadTime : float = 1f;// prędkość reoladu
var turnSpeed : float = 5f; //prędkość obracania się wieży
var firePauseTime : float = 0;
var muzzleEffect : GameObject;
var errorAmount : float = .001f;
var myTarget : Transform;
var muzzlePosition : Transform [];//[]para elementów dobre info
var turretBall : Transform;

private var nextFireTime : float;//przerwa pomiędzy strzałem
private var nextMoveTime : float;
private var desiredRotation : Quaternion;
private var aimError : float;


function Start ()
{

}

function Update ()
{

    if(myTarget)
    {
        if (Time.time >= nextMoveTime)
        {
            CalculateAimPosition(myTarget.position);
            turretBall.rotation = Quaternion.Lerp(turretBall.rotation, desiredRotation, Time.deltaTime*turnSpeed);
        }
        if(Time.time >= nextFireTime)
        {
            FireProjectile();
        }
    }

}
function OnTriggerEnter (other : Collider)
{
    nextFireTime = Time.time+(reloadTime*.5);//czas przeładowania to 0.5s
    myTarget = other.gameObject.transform;
}

function OnTriggerExit(other : Collider)
{
    if(other.gameObject.transform == myTarget)
    {
    myTarget = null;
    }
}
function CalculateAimPosition(targetPos : Vector3)
{
     var aimPoint = Vector3(targetPos.x+aimError, targetPos.y+aimError, targetPos.z+aimError);
     desiredRotation = Quaternion.LookRotation(aimPoint);
}
    function CalculateAimError()
{
    aimError = Random.Range(-errorAmount, errorAmount);
}

function FireProjectile()
{
    //audio.Play();
    nextFireTime = Time.time+reloadTime;
    nextMoveTime = Time.time+firePauseTime;
    CalculateAimError();

for(theMuzzlePos in muzzlePositions)
{
    Istantiate(myProjectile, theMuzzlePos.position, theMuzzlePos.rotation);
    Istantiate(muzzleEffect, theMuzzlePos.position, theMuzzlePos.rotation);
}

}