Book Image

Swift Game Development - Third Edition

By : Siddharth Shekar, Stephen Haney
Book Image

Swift Game Development - Third Edition

By: Siddharth Shekar, Stephen Haney

Overview of this book

Swift is the perfect choice for game development. Developers are intrigued by Swift and want to make use of new features to develop their best games yet. Packed with best practices and easy-to-use examples, this book leads you step by step through the development of your first Swift game. The book starts by introducing Swift's best features – including its new ones for game development. Using SpriteKit, you will learn how to animate sprites and textures. Along the way, you will master physics, animations, and collision effects and how to build the UI aspects of a game. You will then work on creating a 3D game using the SceneKit framework. Further, we will look at how to add monetization and integrate Game Center. With iOS 12, we see the introduction of ARKit 2.0. This new version allows us to integrate shared experiences such as multiplayer augmented reality and persistent AR that is tied to a specific location so that the same information can be replicated on all connected devices. In the next section, we will dive into creating Augmented Reality games using SpriteKit and SceneKit. Then, finally, we will see how to create a Multipeer AR project to connect two devices, and send and receive data back and forth between those devices in real time. By the end of this book, you will be able to create your own iOS games using Swift and publish them on the iOS App Store.
Table of Contents (22 chapters)
Swift Game Development Third Edition
Contributors
Preface
Other Books You May Enjoy
Index

Parallax background layers


Parallax adds the feeling of depth to your game by drawing separate background layers and moving them past the camera at varying speeds. Very slow backgrounds give the illusion of distance, while fast-moving backgrounds appear to be close to the player. We can enhance this effect by painting faraway objects with increasingly desaturated colors.

In our game, we will achieve the parallax effect by attaching our backgrounds to the scene, then slowly pushing the backgrounds to the right as the camera pans right. As the camera moves to the right (making the children of the scene appear to move left), we will move the background's x position to the right, so that the total background node movement is less than for the other children of the scene. The result will be background layers that appear to move more slowly than the rest of our game, and thus appear farther away.

In addition, each background will only be 3,072 points wide, but will jump forward at precise intervals...