Book Image

Swift 3 Game Development - Second Edition

By : Stephen Haney
Book Image

Swift 3 Game Development - Second Edition

By: Stephen Haney

Overview of this book

Swift is the perfect choice for game development. Developers are intrigued by Swift 3.0 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. This book starts by introducing SpriteKit and Swift's new features that can be used for game development. After setting up your first Swift project, you will build your first custom class, learn how to draw and animate your game, and add physics simulations. Then, you will add the player character, NPCs, and powerups. To make your game more fun and engaging, you will learn how to set up scenes and backgrounds, build fun menus, and integrate with Apple Game Center to add leaderboards and achievements. You will then make your game stand out by adding animations when game objects collide, and incorporate proven techniques such as the advanced particle system and graphics. Finally, you will explore the various options available to start down the path towards monetization and publish your finished games to the App Store. By the end of this book, you will be able to create your own iOS games using Swift and SpriteKit.
Table of Contents (20 chapters)
Swift 3 Game Development - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Turning bronze coins to gold


You may notice that your gold coins in the scene editor show up as bronze coins in the game. This is because the Coin class defaults to using the bronze texture and value. We will specify our gold coins by setting their name attribute to gold in the scene editor and then checking for this name in the Coin init function. Follow these steps to implement golden coins:

  1. Open your encounters in the scene editor, select your gold coins, and use the Attributes inspector to set the name value of each node to gold, as shown here:

  2. We can easily loop through all nodes with a certain name. We will use this functionality to run the Coin class's turnToGold function on any node with the name gold. Open EncounterManager and add the following code in the init function, at the bottom of the encounter for loop (new code in bold):

            // Save initial sprite positions for this encounter: 
            saveSpritePositions(node: encounterNode) 
            // Turn golden coins gold...