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

Extending the SKNode class

When designing games, you may need to provide some extra behavior and complexity to sprites and nodes. For example, we may sometimes like to create nodes that consist of several sprites or develop enemies that can behave in one way or another, depending on its type.

For this purpose, one useful solution is to create customized nodes by extending SKNode in order to inherit all of its properties and utilities and building a complex class to provide the behavior needed for a game.

For the game, we are going to take advantage of this approach to load some enemies. The rabbit's escape route, which is shown in the following screenshot, is a part of the doors, and will be filled by enemies. The enemies will be puppet rabbits, which will move laterally on a rail. These enemies can be of two types. Depending on their type, they will move either from left to right, or from right to left.

Before implementing this solution, let's open the initial project for this chapter, which...