Zoo 1.3 Walkthrough

Overview

Activity

Update the Zoo project to checkpoint 1.3.

User Story

As a developer, I want to complete the Zoo 1.3 checkpoint so the project includes the required programming concepts and behavior.

Acceptance Criteria

All required new source files exist in the correct folders.
Existing files contain the checkpoint changes shown in this walkthrough.
The solution builds successfully.
The application starts and the updated behavior can be exercised.
Names, casing, namespaces, and member signatures match the checkpoint source.

Task List

Create 2 new source files.
Update 8 existing source files.
Confirm the new files are included in the project.
Build the solution and resolve any compiler errors.
Run the application and verify the new behavior.

Exact Casing Matters

Use the filenames, class names, namespaces, method names, property names, and enum values exactly as shown.

Watch Out For

Do not copy build-output folders such as bin, obj, .vs, or package caches into your working project.

Before You Begin

Start with a clean copy of Zoo 1.2 End. Rename the extracted solution folder and solution file for the current checkpoint before making code changes.

Understand the Changes

2
new instructional files

8
existing files changed

1
project-file updates

Files to create

ZooScenario/Business Classes/Guest.cs
ZooScenario/Business Classes/Wallet.cs

Files to update

ZooScenario/Business Classes/Animal.cs
ZooScenario/Business Classes/BirthingRoom.cs
ZooScenario/Business Classes/Booth.cs
ZooScenario/Business Classes/Employee.cs
ZooScenario/Business Classes/VendingMachine.cs
ZooScenario/Business Classes/Zoo.cs
ZooScenario/MainWindow.xaml
ZooScenario/MainWindow.xaml.cs

Create New Files

ZooScenario/Business Classes/Guest.cs

Create this file with the following checkpoint source:

using System;
using System.Collections.Generic;
using System.Text;

namespace ZooScenario
{
    /// <summary>
    /// The class which is used to represent a guest.
    /// </summary>
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.StyleCop.CSharp.MaintainabilityRules", "SA1401:FieldsMustBePrivate", Justification = "Encapsulation not yet taught.")]
    public class Guest
    {
        /// <summary>
        /// The age of the guest.
        /// </summary>
        public int Age;

        /// <summary>
        /// The name of the guest.
        /// </summary>
        public string Name;

        /// <summary>
        /// The guest's wallet.
        /// </summary>
        public Wallet Wallet;

        /// <summary>
        /// Buys a ticket.
        /// </summary>
        public void BuyTicket()
        {
            this.Wallet.RemoveTicketPrice();
        }

        /// <summary>
        /// Visits the zoo.
        /// </summary>
        public void VisitZoo()
        {
            this.BuyTicket();
        }
    }
}

ZooScenario/Business Classes/Wallet.cs

Create this file with the following checkpoint source:

using System;
using System.Collections.Generic;
using System.Text;

namespace ZooScenario
{
    /// <summary>
    /// The class which is used to represent a wallet.
    /// </summary>
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.StyleCop.CSharp.MaintainabilityRules", "SA1401:FieldsMustBePrivate", Justification = "Encapsulation not yet taught.")]
    public class Wallet
    {
        /// <summary>
        /// The amount of money currently contained within the wallet.
        /// </summary>
        public decimal MoneyBalance;

        /// <summary>
        /// Adds money to the wallet.
        /// </summary>
        public void AddMoney()
        {
            this.MoneyBalance = this.MoneyBalance + 5.00m;
        }

        /// <summary>
        /// Removes the ticket price from the wallet.
        /// </summary>
        public void RemoveTicketPrice()
        {
            this.MoneyBalance = this.MoneyBalance - 15.00m;
        }
    }
}