Chapter 1, Requirements and Preparation Work, teaches you how to create an iTunes Developer account and the app with the settings for leaderboards, achievements, in-app purchases, and iAds. It also teaches you how to download and install Unity 5 in order to create a new 2D game project.

Chapter 2, Player Input for Mobile Devices, writes the C# code needed to both test inside of Unity 5 and take user input on the iOS device.

Chapter 3, Player Character, Obstacles, and Pickups, uses Unity 5 to create GameObjects that visually show a 2D sprite and animation before writing the C# code so that they are interactive in the scene.

Chapter 4, Editor Tool, Prefabs, and Game Level, uses the Unity 5 EditorWindow class and C# to write an editor tool that will help create the GameObjects that make up the game level before discussing how to create and use prefabs to put together the game level.

Chapter 5, Scene Background, the Game User Interface, and the Save Profile, writes a C# class that manages background sprite images before discussing the basics of the Unity 5 UI system and how to use the PlayerPrefs class to save game data.

Chapter 6, Main Menu, iAds, Leaderboards, Store Purchases, and Achievements, shows further development using the Unity 5 UI system to create the main menu and how to set up the main menu to show leaderboards and achievements, handle in-app purchasing, and display iAds to the device screen.

Chapter 7, Game Builds and Submission To Apple, creates a test build to play on your device before going through the process of creating a distribution build that you can then submit to Apple for review.

In order to compile and submit an iOS build, you must have a Macintosh computer running the most current OS X version and have the most recent version of Xcode installed. You will also need a computer that meets the minimum requirements to run Unity 5, which includes Windows XP SP2+, Windows 7 SP1+, Windows 8+, or Mac OS X 10.8+, and a graphics card that supports DirectX 9.

You will also need a plugin that allows you to access native iOS functions that can handle in-app purchases. In the book, I use IOS Native, which is available through Unity Asset Store.

To only follow the process and not build or submit the game to Apple, you simply need any computer that has the minimum requirements to run Unity 5.

This book is for those who are either brand new to game development or those who have made games for other platforms and are looking to explore how to make games for iOS. You need to have basic computer knowledge, including how to install, open, and navigate programs through instruction, as well as the desire to follow along and write computer code.

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "This means that if the game is running at 30 frames-per-second, Update() will be called 30 times in that second."

A block of code is set as follows:

using UnityEngine;
using System.Collections;
public class PlayerInput : MonoBehaviour
{
  /* Use this for initialization */
  void Start ()
  {
  }
  /* Update is called once per frame */
  void Update () 
  {
  }
}

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "When this folder is created, right-click on it. Then, navigate to Create and select C# Class."

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