book

Swift Game Development - Third Edition

Name: Swift Game Development - Third Edition
ISBN: 9781788471152

by Siddharth Shekar, Stephen Haney

September 2018

Intermediate to advanced

434 pages

8h 47m

English

Packt Publishing

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Swift Game Development Third Edition
Table of Contents
Swift Game Development Third Edition
Why subscribe?
Packt.com
Contributors
About the authors
About the reviewer
Packt is Searching for Authors Like You
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code filesConventions used

Get in touch
Reviews
1. Designing Games with Swift
Why you will love Swift
Prerequisites
What you will learn in this book
Embracing SpriteKitReacting to player inputStructuring your game codeBuilding UI/menus/levelsIntegrating with Game CenterMaximizing funCrossing the finish lineMonetizing your work
New in Swift 4.2
Setting up your development environment
Introducing and installing XcodeCreating our first Swift gameNavigating our project
Exploring the SpriteKit demo
Examining the demo code
Cleaning up
Summary
2. Sprites, Camera, Action!
Preparing your project
Drawing your first sprite
Building a SKSpriteNode class
Animation—movement, scaling, and rotation
Sequencing multiple animationsRecapping your first sprite
The story on positioning
Alignment with anchor points
Working with textures
Downloading the free assetsMore exceptional art assetsDrawing your first textured spriteAdding the bee image to your projectLoading images with SKSpriteNode
Designing for Retina
The ideal asset approachHands-on with retina in SpriteKit
Organizing art into texture atlases
Exploring Assets.xcassetsCollecting art into texture atlasesUpdating our bee node to use the texture atlasIterating through texture atlas framesPutting it all together
Centering the camera on a sprite
Summary
3. Mix in the Physics
Laying the foundationsAdopting a protocol for consistencyOrganizing game objects into classesThe icy tundraAdding the ground texture to Assets.xcassetsAdding the Ground classTiling a textureRunning wire to the groundAdding the player's character
Renovating the GameScene class
Physics bodies and gravity
Dropping like fliesSolidifying the ground
Exploring physics simulation mechanics
Bumping bees into bees
Movement with impulses and forces
Summary
4. Adding Controls
Retrofitting the Player class for flightThe BeekeeperUpdating the Player classMoving the ground
Assigning a physics body to the player
Creating a physics body shape from a texture
Polling for device movement with Core Motion
Implementing the Core Motion code
Wiring up the sprite onTap events
Implementing touchesBegan in the GameSceneLarger than life
Teaching our penguin to fly
Listening for touches in GameScene
Fine-tuning gravity
Spreading your wings
Improving the camera
Pushing Pierre forward
Tracking the player's progress
Looping the ground as player the moves forward
Summary
5. Spawning Enemies, Coins, and Power-Ups
Introducing the cast
Locating and adding the art assets
Adding the Power-up Star
Adding the Star class
A new enemy - the Mad Fly
Adding the MadFly class
Another terror - Bats!
Adding the Bat class
Guarding the ground with the Blade
Adding the Blade class
Adding coins
Creating the coin classes
Organizing the project navigator
Testing the new game objects
Preparing for endless flight
Summary
6. Generating a Never-Ending World
Designing levels with the SpriteKit scene editorSeparating level data from game logicUsing custom classes in the scene editor
Building encounters for Pierre Penguin
Creating our first encounterIntegrating scenes into the game
Looping encounters for a never-ending world
Building more encountersUpdating the EncounterManager classStoring metadata in SKSpriteNodeuserData propertyWiring up EncounterManager in the GameScene class
Adding the Power-up Star at random places
Turning bronze coins into gold coins
Summary
7. Implementing Collision Events
Learning the SpriteKit collision vocabulary
Collision versus contact
Physics category masks
Using category masks in Swift
Adding contact events to our game
Setting up the physics categories
Assigning categories to game objects
The playerThe groundThe Power-up StarEnemiesCoins
Preparing GameScene for contact events
Viewing console output
Testing our contact code
Player health and damage
Animations for damage and game over
The damage animationThe game over animationCollecting coins
The Power-up Star logic
Summary
8. Polishing to a Shine – HUD, Parallax Backgrounds, Particles, and More
Adding a HUDImplementing the HUD
Parallax background layers
Adding the background assetsImplementing a background classWiring up backgrounds in the GameScene class
Using the particle system
Adding the circle particle asset
Creating a SpriteKit particle file
Configuring the path particle settings
NameBackgroundTextureEmitterLifetimePosition RangeAngleSpeedAccelerationAlphaScaleRotationColor BlendColor Ramp
Adding the particle emitter to the game
Granting safety as the game starts
Summary
9. Adding Menus and Sounds
Building the main menuCreating the menu scene and menu nodesLaunching the main menu when the game starts
Wiring up the START GAME button
Adding the restart game menuExtending the HUD
Wiring up GameScene for game over
Informing the GameScene class when the player dies
Implementing touch events for the restart menu
Adding music with AVAudio
Adding sound assets to the gamePlaying background music
Playing sound effects
Adding the coin sound effect to the Coin classAdding the power-up and hurt sound effects to the Player classPlaying sound effects with SKActionAdding a mute button and volume slider
Adding Options to the Menu Scene
Summary
10. Standing out in the Crowd with Advanced Features
Adding crates to smash open
Creating the Crate particle effects
Recycling emitter nodes with particle pools
Wiring up crate contact events
Creating the health power-up crate
Spawning smashable crates that reward coins
Summary
11. Introduction to SceneKit
Creating a Scene with SCNScene
Adding objects to the scene
Adding a sphereAdding light sourcesAdding a camera to the sceneAdding a floor
Importing scenes from an external 3D application
Creating the hero class and physics
Adding an enemy and collision detection
Adding a SpriteKit overlay
Adding labels and buttons
Adding touch interactivity
Adding the Gameloop
Setting a GameOver conditionChecking for contact
Adding wall and floor parallax
Adding particles
Adding character animation
Summary
12. Choosing a Monetization Strategy
Developing your marketing planWhen to start marketingMarketing checklist
Leveraging crowdfunding
Pros and cons of crowdfunding
Showing display ads for revenue
The upsides to showing adsThe downsides to showing ads
Adding an AdMob Ad in the App
Selling in-app purchases
In-app purchase strategiesA word about farming your players
Adding In-App Purchases
Localization in foreign markets
Managing scope and completing projects
Summary
13. Integrating with Game Center
Authenticating the player's Game Center account
Opening Game Center in our game
Updating the leaderboard from the code
Adding an achievement
Creating a new achievement in iTunes ConnectUpdating achievements from the code
Summary
14. Introduction to Spritekit with ARKit
Requirements for the project
Creating an AR Spritekit project
Adding text and crosshair
Adding anchors at random locations
Adding custom sprite
Registering touch controls to remove game objects
Summary
15. Introduction to Scenekit with ARKit
Going through the basic Scenekit/ARKit project
Project setup and detecting a plane
Adding touches
Adding Game Objects
Stop detecting planesAdding light sourceAdding ground nodeAdding Hero and Enemy
Adding Score and Gameover text
Finishing touches
Summary
16. Publishing the Game on the App Store
Creating the Bundle ID for the app
Preparing the project
Create the App in the itunesconnect portal
Upload the App and submit for review
Summary
17. Multipeer Augmented Reality
Multipeer connectivity framework overview
Creating the multipeer session class
Creating a UI for the app
Setting outlets and adding variables
Initializing the viewUpdate session and trackingHosting and joining the sessionSending and receiving dataInitializing a multipeer session
Testing the application
Summary
Other Books You May Enjoy
Leave a review – let other readers know what you think
Index

Content preview from Swift Game Development - Third Edition

Organizing art into texture atlases

We will quickly overrun our project navigator with image files if we add all our textures like we did with our bee. Luckily, Xcode provides several solutions.

Exploring Assets.xcassets

We can store images in an .xcassets file and refer to them easily from our code. Follow these steps to prepare our .xcassets file:

Open Assets.xcassets from your project navigator.
You will see an empty AppIcon entry. You can leave it there for now; we will revisit the AppIcon later.

Collecting art into texture atlases

We will use texture atlases for most of our in-game art. Texture atlases organize assets by collecting related artwork together. They also increase performance by optimizing all of the images inside each atlas as if they ...

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Swift 3 Game Development - Second Edition

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