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

3-star challenge: restarting a game

We have seen how we can end our game, but what happens if the user wants to play it again? Should they kill the app and restart it just to play a new game? This is not a kind way of treating players. So let's provide them with a way to replay the game easily.

I recommend that you take advantage of all the knowledge that you have acquired so far in order to create a label when the game is over, which will restart the game. With what we have learned in the previous chapters, you will be capable of finding a solution for this challenge.

Try to develop your own solution and then compare it with the following one.


First of all, we are going to need a label. So let's declare label by adding the following line at the top of GameScene:

private var labelResetGame: SKLabelNode!

We will initialize labelResetGame when the game is over so that labelResetGame will happen in the gameOver method. For this purpose, replace the following line in the aforementioned method...