Testing the weapon system

If you wish to test the code we just reviewed in your own instance of Unity, you need to follow these steps:

1. Copy all the classes we just reviewed in your Unity project.
2. Create an empty Unity scene.

3. Add a new GameObject to the scene.
4. Attach the following client script to the new GameObject:

using UnityEngine;

namespace Chapter.Decorator
{
    public class ClientDecorator : MonoBehaviour
    {
        private BikeWeapon _bikeWeapon;
        private bool _isWeaponDecorated;

        void Start() {
            _bikeWeapon = 
                (BikeWeapon) 
                FindObjectOfType(typeof(BikeWeapon));
        }

        void OnGUI() 
        {
            if (!_isWeaponDecorated) 
                if (GUILayout.Button("Decorate Weapon")) {
                    _bikeWeapon.Decorate();
                    _isWeaponDecorated = !_isWeaponDecorated;
                }

            if (_isWeaponDecorated)
                if (GUILayout.Button("Reset Weapon"))...