limit x position

import UnityEngine
import System.Collections


public class Shooter(MonoBehaviour):

    public projectile as Rigidbody

    public shotPos as Transform

    public shotForce as single = 1000.0F

    public moveSpeed as single = 10.0F



    private def Update():
        h as single = ((Input.GetAxis('Horizontal') * Time.deltaTime) * moveSpeed)
        v as single = ((Input.GetAxis('Vertical') * Time.deltaTime) * moveSpeed)

        if transform.position.x>6:
            h = 0;
        transform.Translate(Vector3(h, v, 0.0f))
        print(transform.position.x);

        if Input.GetButtonUp('Fire1'):
            shot = (Instantiate(projectile, shotPos.position, shotPos.rotation) as Rigidbody)
            shot.AddForce((shotPos.forward * shotForce))