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  • Book Overview & Buying Sparrow iOS Game Framework Beginner's Guide
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Sparrow iOS Game Framework Beginner's Guide

Sparrow iOS Game Framework Beginner's Guide

By : Stein
4 (1)
Buy this Book
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Sparrow iOS Game Framework Beginner's Guide

Sparrow iOS Game Framework Beginner's Guide

4 (1)
By: Stein
Buy this Book

Overview of this book

An easy-to-follow guide full of descriptive step-by-step procedures on how to develop a game for iOS. With each topic, a new challenge will be tackled to get a deeper knowledge of the Sparrow game framework and gain the skills to develop a complete mobile experience. This book is aimed at those who have always wanted to create their own games for iOS devices. Perhaps you've already dabbled in game development and want to know how to develop games for the Apple App Store, or maybe you have developed Objective-C apps in the past but you are new to game development. In either case, this book will help with descriptive examples and teach you to develop a game throughout its course. Some experience in Objective-C and a basic understanding of object-oriented programming are required.
Table of Contents (15 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Time for action – heading
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Reader feedback
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Customer support
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1
1. Getting Started with Sparrow
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1. Getting Started with Sparrow
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Understanding the basics of Sparrow
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System requirements
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Setting up the Apple developer account
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Downloading Xcode
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Downloading Sparrow
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Contents of the Sparrow package
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Setting up Sparrow
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Time for action – adding Sparrow as a source tree reference
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Time for action – using the barebone project as a template
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Time for action – installing command-line tools
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Time for action – installing CocoaPods
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Time for action – using the barebone project as a template
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Running the template on the actual device
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Time for action – running the template on the actual device
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Getting Sparrow documentation files
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Time for action – adding the Sparrow API documentation to Xcode
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The idea for the game
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Code conventions
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Summary
2
2. Displaying Our First Objects
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2. Displaying Our First Objects
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Understanding display objects
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Setting the background color
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Time for action – changing the background color
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Creating our cardboard puppet doll
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Time for action – creating a cardboard puppet doll
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Explaining macros
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Manipulating display objects
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Time for action – manipulating display objects
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Summary
3
3. Managing Assets and Scenes
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3. Managing Assets and Scenes
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Working with assets
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Managing our assets
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Time for action – creating a base class
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Creating a texture manager
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Time for action – managing our textures
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Creating a sound manager
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Time for action – implementing a sound manager
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Creating a file manager
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Time for action – managing remaining file types
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Time for action – getting started with basic error handling
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Putting it all together
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Time for action – creating an asset container class
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Time for action – displaying an image
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What are scenes?
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Time for action – implementing a scene class
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Creating a scene director
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Time for action – managing our scenes with a scene director
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Summary
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4. The Basics of Our Game
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4. The Basics of Our Game
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Taking care of cross-device compatibility
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Starting with the development of our game
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Creating our scene manager setup
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Time for action – creating our scene manager setup
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Adding images to the battlefield scene
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Time for action – adding images to the battlefield scene
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Arranging images in the pirate cove scene
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Time for action – arranging images in the pirate cove scene
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Summary
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5. Beautifying Our Game
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5. Beautifying Our Game
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Working with tweens
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Time for action – moving the pirate ship
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Time for action – updating the movement
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Working with sprite sheets
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Learning about texture formats
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Time for action – loading our first texture atlas
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Summary
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6. Adding Game Logic
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6. Adding Game Logic
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Extending the asset manager
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Time for action – adding texture atlases to the asset manager
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Structuring our ships
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Time for action – creating a ship class
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Extending the ship class
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Time for action – adding more functionality to the ship class
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Shooting cannonballs
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Time for action – allowing the ship to shoot cannonballs
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Collision detection
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Time for action – letting cannonballs collide with ships
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Loading gameplay-relevant data
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Time for action – avoiding hardcoded values
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Summary
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7. User Interface
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7. User Interface
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Displaying the hit points of each ship
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Time for action – placing a health bar on top of each ship
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Adding buttons to the screen
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Time for action – putting buttons on the screen
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Time for action – allowing the player to pause and resume
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Time for action – conceding the game
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Adding dialogs to the screen
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Time for action – creating a dialog class
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Adding custom events to the dialogs
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Time for action – adding our own buttons to our dialog
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Drawing text on the screen
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Time for action – adding a text field to the dialog
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Time for action – using bmGlyph to create a bitmap font
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Time for action – using our bitmap font for a text field
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Summary
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8. Artificial Intelligence and Game Progression
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8. Artificial Intelligence and Game Progression
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Artificial intelligence in theory
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Letting the enemy ship move and attack
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Time for action – getting the enemy ship to move around
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Time for action – the enemy should attack the player
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Time for action – spicing up the AI with fuzzy values
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Adding progression to our game
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Time for action – adding a World class
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Time for action – updating the scene and dialog classes
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Time for action – making the pirate cove playable
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Adding win and lose conditions
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Time for action – being able to win or lose
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Summary
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9. Adding Audio to Our Game
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9. Adding Audio to Our Game
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Finding music and sound
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Adding audio playback
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Time for action – getting audio files to play
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Time for action – playing music in our scenes
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Time for action – sound effects in the pirate cove
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Summary
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10. Polishing Our Game
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10. Polishing Our Game
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Adding additional scenes
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Time for action – showing the game over scene
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Time for action – having the game over scene show up
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Time for action – integrating the main menu into our game
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Time for action – creating an intro for our game
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Implementing tutorial mechanics
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Time for action – adding a tutorial to our intro scene
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Loading and saving the current state
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Time for action – loading and saving the last played game
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Summary
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11. Integrating Third-party Services
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11. Integrating Third-party Services
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Getting word out to potential testers
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Time for action – integrating Ubertesters
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Time for action – creating a build for beta testers
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Time for action – deploying an application
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Explaining Game Center
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Time for action – integrating Game Center authentication
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An overview of analytics services
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Summary
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A. Pop Quiz Answers
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Chapter 1, Getting Started with Sparrow
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Chapter 2, Displaying Our First Objects
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Chapter 3, Managing Assets and Scenes
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Chapter 4, The Basics of Our Game
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Chapter 5, Beautifying Our Game
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Chapter 6, Adding Game Logic
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Chapter 7, User Interface
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Chapter 8, Artificial Intelligence and Game Progression
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Chapter 9, Adding Audio to Our Game
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Chapter 10, Polishing Our Game
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Chapter 11, Integrating Third-party Services
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Afterword
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Afterword
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Index
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Index

Working with sprite sheets

So far, we loaded every image on its own and displayed them on the screen. Sprite sheets are a way to combine all of these smaller images into one big image. When we load the image, we are able to use the textures in the same way that we are used to.

When using multiple images, something called a "texture switch" happens every time the current active texture is being swapped out by a different one. This operation is quite heavy on performance, so it should be avoided where possible. Sprite sheets allow us to achieve this by using the same image asset for numerous different images, thus avoiding the texture switch and keeping the number of draw calls to a minimum.

Sprite sheets can also be used for sprite animation, in which a series of images is displayed sequentially one frame after another, which creates the illusion of animation to the human eye—just like a flip book.

A texture atlas is a specialization of sprite sheets with regard to containing smaller images...

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