Book Image

Getting Started with SpriteKit

By : Jorge Jordán
Book Image

Getting Started with SpriteKit

By: Jorge Jordán

Overview of this book

SpriteKit is Apple’s game engine to develop native iOS games. Strongly boosted by the Apple Inc., Cupertino, it has increased in popularity since its first release. This book shows you the solutions provided by SpriteKit to help you create any 2D game you can imagine and apply them to create animations that will highlight your existing apps. This book will give you the knowledge you need to apply SpriteKit to your existing apps or create your own games from scratch. Throughout the book, you will develop a complete game. The beautiful designs implemented in the game in this book will easily lead you to learn the basis of 2D game development, including creating and moving sprites, and adding them to a game scene. You will also discover how to apply advanced techniques such as collision detection, action execution, playing music, or running animations to give a more professional aspect to the game. You will finish your first game by learning how to add a main menu and a tutorial, as well as saving and loading data from and to the player’s device. Finally, you will find out how to apply some mobile games techniques such as accelerometer use or touch detection.
Table of Contents (13 chapters)
Getting Started with SpriteKit
About the Author
About the Reviewer

2-star challenge: reproducing sound effects

In the previous section, you learned how to reproduce sounds in two different ways. Now, I would like to challenge you to write the code needed to reproduce a couple of sounds (wrong_door.mp3 and correct_door.mp3) when the rabbit crosses a wrong door or a correct door respectively.


I don't think that this challenge is very complicated, but I've qualified it as a 2-star challenge because you need to add code in two to three parts of the GameScene class.

I've chosen to create two new variables to handle each of the sounds. Add the following lines to the GameScene class:

private var wrongDoorSound: AVAudioPlayer!
private var correctDoorSound: AVAudioPlayer!

I declared them as the AVAudioPlayer instances as it will provide a little more efficiency due to the way I coded it.

Next, we need to declare these new variables. So, add the following block of code in the do-catch statement in the initializeMusic method just after