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Swift 3 Game Development

Swift 3 Game Development

By : Haney
4.5 (6)
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Swift 3 Game Development

Swift 3 Game Development

4.5 (6)
By: 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 (14 chapters)
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The story on positioning


SpriteKit uses a grid of points to position nodes. In this grid, the bottom left corner of the scene is (0,0), with a positive x-axis to the right and a positive y-axis to the top.

Similarly, on the individual sprite level, (0,0) refers to the bottom left corner of the sprite, while (1,1) refers to the top right corner.

Alignment with anchor points

Each sprite has an anchorPoint property, or an origin. The anchorPoint property allows you to choose which part of the sprite aligns to the sprite's overall position.

Note

The default anchor point is (0.5,0.5), so a new SKSpriteNode centers perfectly on its position.

To illustrate this, let's examine the blue square sprite we just drew on the screen. Our sprite is 50 points wide and 50 points tall, and its position is (150,150). Since we have not modified the anchorPoint property, its anchor point is (0.5,0.5). This means the sprite will be perfectly centered over the (150,150) position on the scene's grid. Our sprite's left...

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