book

Swift 3 Game Development - Second Edition

Name: Swift 3 Game Development - Second Edition
Author: Stephen Haney
ISBN: 9781787127753

by Stephen Haney

February 2017

Beginner to intermediate

258 pages

5h 31m

English

Packt Publishing

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Swift 3 Game Development - Second Edition
Swift 3 Game Development - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Why subscribe?
Customer Feedback
Preface
What this book covers
What you need for this book
Who this book is for

Conventions
Reader feedback
Customer support
Downloading the example codeDownloading the color images of this bookErrataPiracyQuestions
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 3
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!
Sharpening our pencils
Checkpoint 2-A
Drawing your first sprite
Building a SKSpriteNode class
Adding animation to your toolkit
Sequencing multiple animationsRecapping your first sprite
The story on positioning
Alignment with anchor points
Adding textures and game art
Downloading the free assetsMore exceptional artDrawing 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 your assets
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
Checkpoint 2-B
Summary
3. Mix in the Physics
Laying the foundationFollowing protocolReinventing the beeThe icy tundraAdding the ground texture to Assets.xcassetsAdding the Ground classTiling a textureRunning wire to the groundA wild penguin appears!
Renovating the GameScene class
Exploring the physics system
Dropping like fliesSolidifying the ground
Checkpoint 3-A
Exploring physics simulation mechanics
Bee meets bee
Impulse or force?
Checkpoint 3-B
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
Checkpoint 4-A
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
Checkpoint 4-B
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
Adding a new enemy - the Mad Fly
Adding the MadFly class
Another terror - Bats!
Adding the Bat class
Guarding the ground - adding the Blade
Adding the Blade class
Adding the coins
Creating the coin classes
Organizing the project navigator
Testing the new game objects
Checkpoint 5-A
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
Encounters in endless flying
Creating our first encounterIntegrating scenes into the game
Checkpoint 6-A
Spawning endless encounters
Building more encountersUpdating the EncounterManager classStoring metadata in SKSpriteNodeuserData propertyWiring up EncounterManager in the GameScene class
Spawning the Power-up Star at random
Turning bronze coins to gold
Checkpoint 6-B
Summary
7. Implementing Collision Events
Learning the SpriteKit collision vocabularyCollision versus contactPhysics category masksUsing 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 outputTesting our contact code
Checkpoint 7-A
Player health and damage
Animations for damage and game over
The damage animationThe game over animationCollecting coinsThe Power-up Star logicterrific progress in this chapter. To download my project up to this
Checkpoint 7-B
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
Checkpoint 8-A
Harnessing SpriteKit's particle system
Adding the circle particle assetCreating a SpriteKit particle fileConfiguring the path particle settingsAdding the particle emitter to the game
Granting safety as the game starts
Checkpoint 8-B
Summary
9. Adding Menus and Sounds
Building the main menuCreating the menu scene and menu nodesLaunching the main menu when the game startsWiring up the START GAME button
Adding the restart game menu
Extending the HUDWiring up GameScene for game overInforming the GameScene class when the player diesImplementing touch events for the restart menu
Checkpoint 9-A
Adding music and sound
Adding the 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 a sound when the game starts
Checkpoint 9-B
Summary
10. Standing Out in the Crowd with Advanced Features
Adding fun crates to smash openCreating the Crate particle effects
Recycling emitter nodes with particle pools
Checkpoint 10-A
Wiring up crate contact events
Adding a health crate
Smashing coin crates
Checkpoint 10-B
Summary
11. 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
Selling in-app purchases
In-app purchase strategiesA word about farming your players
Localization into foreign markets
Managing scope and completing projects
Summary
12. Integrating with Game Center
Registering an app with iTunes Connect
Creating a test user
Authenticating the player's Game Center account
Opening Game Center in our game
Checkpoint 10-A
Adding a leaderboard of high scores
Creating a new leaderboard in iTunes ConnectUpdating the leaderboard from the code
Adding an achievement
Creating a new achievement in iTunes ConnectUpdating achievements from the code
Checkpoint 10-B
Summary
13. Ship It! Preparing for the App Store and Publication
Finalizing assetsAdding app icons
Designing the launch screen
Taking screenshots for each supported deviceFinalizing iTunes Connect informationConfiguring pricing
Uploading our project from Xcode
Submitting for review in iTunes Connect
Summary

Content preview from Swift 3 Game Development - Second Edition

Opening Game Center in our game

If the user is authenticated, we will add a button to the MenuScene class so they can open the leaderboard and view achievements from within our game. Alternatively, players can always use the Game Center app in iOS to view their progress.

Follow these steps to create a leaderboard button in the menu scene:

Open MenuScene.swift in Xcode.
Add a new import statement at the top of the file so we can use the GameKit framework:
```
        import GameKit 
```
Update the line that declares the MenuScene class so that our class adopts the GKGameCenterControllerDelegate protocol. This allows the Game Center screen to inform our scene when the player closes the Game Center:
```
        class MenuScene: SKScene, GKGameCenterControllerDelegate ...
```

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Swift 3 Game Development - Second Edition

by Stephen Haney

Opening Game Center in our game

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.