Table Of ContentUnity 2020 Mobile Game
Development
Second Edition
Discover practical techniques and examples to create and
deliver engaging games for Android and iOS
John P. Doran
BIRMINGHAM - MUMBAI
Unity 2020 Mobile Game Development
Second Edition
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Commissioning Editor: Pavan Ramchandani
Acquisition Editor: Larissa Pinto
Content Development Editor: Divya Vijayan
Senior Editor: Mohammed Yusuf Imaratwale
Technical Editor: Deepesh Patel
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First published: November 2017
Second edition: August 2020
Production reference: 1210820
Published by Packt Publishing Ltd.
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ISBN 978-1-83898-733-6
www.packt.com
To my wife, Hien, for being my loving partner throughout our joint life journey, and to my
parents, who took me seriously when I said I wanted to make games for a living.
– John P. Doran
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Contributors
About the author
John P. Doran is a passionate and seasoned technical game designer, software engineer,
and author based in Peoria, Illinois.
For over a decade, John has gained extensive hands-on expertise in game development,
working in a variety of roles, ranging from game designer to lead UI programmer.
Additionally, John has worked in game development education teaching in Singapore,
South Korea, and the United States. To date, he has authored over 10 books pertaining to
game development.
John is currently an instructor in residence at Bradley University. Prior to his present
ventures, he was an award-winning videographer.
I want to thank everyone at Packt Publishing for all of their hard work, and thank you to
my colleagues in the Interactive Media department at Bradley University, for all of their
support over the course of working on this title.
About the reviewer
Sungkuk Park is a game engineer based in Berlin. He has participated in multiple game
jams around the world and has created indie games to polish his skills. He is currently
interested in the area of technical art, mainly CG, animation, gameplay, and VFX. He
spends most of his time learning new skills, including drawing, animation, and VFX, that
might come in handy when he pursues his next goal: being a game director for the next
gaming generation!
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Table of Contents
Preface 1
Chapter 1: Building Your Game 7
Technical requirements 8
Setting up the project 8
Creating the player 12
Moving the player through a C# script 15
Improving our scripts with attributes and XML comments 20
Using attributes 20
The Tooltip attribute 20
The Range attribute 21
The RequireComponent attribute 22
XML comments 23
Update versus FixedUpdate 25
Putting it all together 26
Having the camera following our player 27
Creating a basic tile 30
Making it endless 35
Creating obstacles 42
Summary 55
Chapter 2: Project Setup for Android and iOS Development 56
Technical requirements 56
An introduction to build settings 57
Building a project for PC 61
Exporting a project for Android 64
Installing Android Build Support for Unity 64
Updating build and player settings for Android projects 67
Putting the project on your Android device 72
Unity for iOS setup and Xcode installation 83
Building a project for iOS 88
Summary 96
Chapter 3: Mobile Input/Touch Controls 98
Technical requirements 99
Using mouse input 99
Moving using touch controls 104
Implementing a gesture 107
Scaling the player using pinches 112
Using the accelerometer 115
Table of Contents
Detecting touch on game objects 117
Summary 126
Chapter 4: Resolution-Independent UI 127
Technical requirements 128
Creating a title screen 128
The Rect Transform component 133
Anchors 135
Pivots 137
Adjusting and resizing the title text 138
Selecting different aspect ratios 145
Working with buttons 149
Adding a pause menu 159
Pausing the game 174
Adapting GUI for notch devices 179
Summary 188
Chapter 5: Advertising Using Unity Ads 190
Technical requirements 191
Setting up Unity Ads 191
Displaying a simple ad 197
Utilizing ad callback methods 200
Opt-in advertisements with rewards 204
Adding in a cooldown timer 211
Summary 217
Chapter 6: Implementing In-App Purchases 218
Technical requirements 219
Setting up Unity IAP 219
Creating our first purchase 227
Adding a button to restore purchases 237
Configuring purchases for the stores of your choice 241
Summary 241
Further reading 242
Chapter 7: Getting Social 243
Technical requirements 244
Adding a scoring system 244
Sharing high scores via Twitter 251
Downloading and installing Facebook's SDK 256
Logging in to our game via Facebook 267
Displaying a Facebook name and profile picture 276
Summary 283
Chapter 8: Keeping Players Involved with Notifications 284
[ ii ]
Table of Contents
Technical requirements 284
Setting up notifications 285
Scheduling notifications ahead of time 290
Customizing notifications 294
Summary 299
Chapter 9: Using Unity Analytics 300
Technical requirements 301
Setting up Analytics 301
Tracking Custom Events 305
Sending basic CustomEvents 305
Sending Custom Events with properties 310
Working with Funnel Analyzer 317
Tweaking properties with Remote Settings 321
Summary 338
Chapter 10: Making Your Title Juicy 339
Technical requirements 340
Animation using LeanTween 340
LeanTween setup 340
Creating a simple tween 343
Adding tweens to the pause menu 349
Working with materials 352
Using post-processing effects 356
Adding particle effects 364
Summary 368
Chapter 11: Game Build and Submission 369
Technical requirements 369
Building a release copy of our game 370
Putting your game on the Google Play Store 375
Setting up the Google Play Console 375
Publishing an app on Google Play 377
Putting your game on the Apple iOS App Store 390
Apple Developer setup and the creation of a provisioning profile 390
Adding an app to iTunes Connect 406
Summary 415
Chapter 12: Augmented Reality 416
Technical requirements 416
Setting up a project for AR 417
Basic setup 419
Detecting surfaces 423
Interacting with the AR environment 426
Spawning objects in AR 431
[ iii ]
