Table Of ContentHands-On Unity 2020
Game Development
Build, customize, and optimize professional games
using Unity 2020 and C#
Nicolas Alejandro Borromeo
BIRMINGHAM—MUMBAI
Hands-On Unity 2020 Game Development
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First published: July 2020
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To Dad, who spoiled me with computers to help me keep learning – I miss
you. Also, to my wife, for reminding me what I am capable of.
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Contributors
About the author
Nicolas Alejandro Borromeo is working as a Unity senior developer at Product Madness
in London. He was a game development career coordinator at Universidad Argentina
de la Empresa (UADE) and has been a game development teacher in many other
Argentine universities, such as UADE, UTN, UAI, and USAL, and in institutions such
as Image Campus and DaVinci, since 2012. Nicolas has been a Unity Certified Instructor
since 2019, teaching for high-profile Unity clients all around the globe. He was an MMO
client-side developer at Band of Coders in Argentina and has been a Unity freelance
developer since 2012.
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. In his
spare time, 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
Designing a Game from Scratch
Game concept 14 The difficulty balance 22
Input controls 15 Difficulty balance questions 23
Winning and losing 16 Implementation plan 24
Game characters 17 Documentation 25
Hero 17 Game Design Document (GDD) 25
Enemies 18 GDD formats 26
GDD creation tools 26
Gameplay 18
Elevator pitch 28
Game-world layout 19
A high concept 29
Starting condition 20
Tips for creating GDDs 30
Ending condition 20
Point system 21 Summary 33
HUD 21
2
Setting Up Unity
Why use a game engine such as Installing Unity 38
Unity? 36
Unity versions 39
Past and present industry insight 36 Installing Unity with Unity Hub 39
Game engines 37
Creating projects 45
Positives of Unity 37
Creating a project 45
Project structure 48
Summary 50
ii Table of Contents
3
Working with Scenes and GameObjects
Manipulating scenes 52 Possible uses 69
The purpose of a scene 52
Prefabs 70
The Scene View 53
Creating Prefabs 71
Our first GameObject 54
Prefab-instance relationship 72
Navigating the Scene View 55
Prefab variants 75
Manipulating GameObjects 56
Saving scenes and projects 77
GameObjects and components 60
Saving our changes 77
Components 61
Project structure 78
Manipulating components 62
Summary 80
Object hierarchies 68
Parenting of objects 68
4
Grayboxing with Terrain and ProBuilder
Creating a Landscape with Installing ProBuilder 93
Terrain 82 Creating a Shape 95
Discussing Height Maps 82 Manipulating the mesh 96
Creating and configuring Height Maps 84 Adding details 102
Authoring Height Maps 87
Summary 106
Adding Height Map details 90
Creating Shapes with ProBuilder 93
5
Importing and Integrating Assets
Importing assets 107 Integrating assets 116
Importing assets from the internet 108 Integrating terrain textures 116
Importing assets from the Asset Store 110 Integrating meshes 119
Integrating textures 121
Table of Contents iii
Configuring assets 123 Assembling the scene 128
Configuring meshes 124
Summary 131
Configuring textures 126
6
Materials and Effects with URP and Shader Graph
Introducing Shaders 134 Creating our first Shader Graph asset 144
Shader Pipeline 134
Using Textures 148
Render Pipelines and URP 137
Combining Textures 157
URP Built-in Shaders 139
Applying transparency 161
Creating Shaders with Shader
Summary 163
Graph 143
7
Visual Effects with Particle Systems and VFX Graph
Introduction to particle systems 166 Creating complex simulations
with VFX Graph 178
Creating a basic particle system 167
Using advanced modules 172 Installing VFX Graph 179
Creating and analyzing a VFX Graph 181
Creating fluid simulations 173
Creating a rain effect 185
Creating a waterfall effect 174
Summary 189
Creating a bonfire effect 176
8
Lighting Using the Universal Render Pipeline
Applying lighting 192 Optimizing lighting 213
Discussing lighting methods 192 Understanding static lighting 213
Configuring ambient lighting with Baking lightmaps 214
skyboxes 197 Applying static lighting to static objects 221
Configuring lighting in URP 202
Summary 224
Applying shadows 205
Understanding shadow calculations 206
Configuring performant shadows 210
