Shooting shots

Code snippet

using UnityEngine;
using System.Collections;

[System.Serializable]
public class Boundary
{
    public float xMin, xMax, zMin, zMax;
}

public class PlayerController : MonoBehaviour
{
    public float speed;
    public float tilt;
    public Boundary boundary;

    public GameObject shot;
    public Transform shotSpawn;
    public float fireRate;

    private float nextFire;

    void Update ()
    {
        if (Input.GetButton("Fire1") && Time.time > nextFire)
        {
            nextFire = Time.time + fireRate;
            Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
        }
    }

    void FixedUpdate ()
    {
        float moveHorizontal = Input.GetAxis ("Horizontal");
        float moveVertical = Input.GetAxis ("Vertical");

        Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
        rigidbody.velocity = movement * speed;

        rigidbody.position = new Vector3 
        (
            Mathf.Clamp (rigidbody.position.x, boundary.xMin, boundary.xMax), 
            0.0f, 
            Mathf.Clamp (rigidbody.position.z, boundary.zMin, boundary.zMax)
        );

        rigidbody.rotation = Quaternion.Euler (0.0f, 0.0f, rigidbody.velocity.x * -tilt);
    }
}

class Boundary
{
    var xMin : float;
    var xMax : float;
    var zMin : float;
    var zMax : float;
}

var speed : float;
var tilt : float;
var boundary : Boundary;

var shot : GameObject;
var shotSpawn : Transform;
var fireRate : float;

private var nextFire : float;

function Update () {
    if (Input.GetButton("Fire1") && Time.time > nextFire)
    {
        nextFire = Time.time + fireRate;
        Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
    }
}

function FixedUpdate () {
     var moveHorizontal : float= Input.GetAxis ("Horizontal");
     var moveVertical : float= Input.GetAxis ("Vertical");

     var movement : Vector3= new Vector3 (moveHorizontal, 0.0f, moveVertical);
    rigidbody.velocity = movement * speed;

    rigidbody.position = new Vector3 
    (
        Mathf.Clamp (rigidbody.position.x, boundary.xMin, boundary.xMax), 
        0.0f, 
        Mathf.Clamp (rigidbody.position.z, boundary.zMin, boundary.zMax)
    );

    rigidbody.rotation = Quaternion.Euler (0.0f, 0.0f, rigidbody.velocity.x * -tilt);
}

import UnityEngine
import System.Collections


[System.Serializable]
public class Boundary:
    public xMin as single
    public xMax as single
    public zMin as single
    public zMax as single


public class PlayerController(MonoBehaviour):
    public speed as single
    public tilt as single
    public boundary as Boundary
    public shot as GameObject
    public shotSpawn as Transform
    public fireRate as single
    private nextFire as single
    
    private def Update():
        if Input.GetButton('Fire1') and (Time.time > nextFire):
            nextFire = (Time.time + fireRate)
            Instantiate(shot, shotSpawn.position, shotSpawn.rotation)
    
    private def FixedUpdate():
        moveHorizontal as single = Input.GetAxis('Horizontal')
        moveVertical as single = Input.GetAxis('Vertical')
        
        movement = Vector3(moveHorizontal, 0.0F, moveVertical)
        rigidbody.velocity = (movement * speed)
        rigidbody.position = Vector3(Mathf.Clamp(rigidbody.position.x, boundary.xMin, boundary.xMax), 0.0F, Mathf.Clamp(rigidbody.position.z, boundary.zMin, boundary.zMax))
        rigidbody.rotation = Quaternion.Euler(0.0F, 0.0F, (rigidbody.velocity.x * (-tilt)))