My Tank moving script

Hi,
I have used a script for the movement of the tank that i have desined. But the script moves the tank in a horizontal orientation. It does not move the tank in the direction pointed by its gun. it moves in the sideward direction.
Any suggestions on how to solve this?

Below is the script i used which i have found from unity forums:
===============================================
var speed:float=50; //speed of the car, tweek as needed based on your scale
var turnSpeed:float=180; //turn speed

function Update()
{
//grab the input axes
var steer=Input.GetAxis("Horizontal");
var gas=Input.GetAxis("Vertical");

//if they're hittin' the gas...
if (gas!=0)
{
//take the throttle level (with keyboard, generally +1 if up, -1 if down)
// and multiply by speed and the timestep to get the distance moved this frame
var moveDist=gas*speed*Time.deltaTime;

//now the turn amount, similar drill, just turnSpeed instead of speed
// we multiply in gas as well, which properly reverses the steering when going
// backwards, and scales the turn amount with the speed
var turnAngle=steer * turnSpeed * Time.deltaTime * gas;

//now apply 'em, starting with the turn
transform.rotation.eulerAngles.y+=turnAngle;

//and now move forward by moveVect
transform.Translate(Vector3.forward*moveDist);
}

}

 

You can try using http://docs.unity3d.com/Documentation/ScriptReference/Transform-forward.html

 

well firdt off alots of question come to me. That it need.

Are the gun and tank split apart?
is the gun attached to the tank so that it a child of of the tank.
Did you attach the script to the gun?

For me it seem like you attached the scirpt to Gun, and turning and moving this.