Book Image

Hands-On Unity 2020 Game Development

By : Nicolas Alejandro Borromeo
Book Image

Hands-On Unity 2020 Game Development

By: Nicolas Alejandro Borromeo

Overview of this book

Over the years, the Unity game engine has extended its scope from just being about creating video games to building AR/VR experiences, complex simulations, real-time realistic rendering, films, and serious games for training and education. Its features for implementing gameplay, graphics, and customization using C# programming make Unity a comprehensive platform for developing professional-level, rich experiences. With this book, you'll be able to build impressive Unity projects in a step-by-step manner and apply your knowledge of Unity concepts to create a real-world game. Complete with hands-on tutorials and projects, this easy-to-follow guide will show you how to develop your first complete game using a variety of Unity tools. As you make progress, you'll learn how to make the most of the Unity Editor and create scripts using the C# programming language. This Unity game development book will then take you through integrating graphics, sound, and animations and manipulating physics to create impressive mechanics for your games. You'll also learn how to code a simple AI agent to challenge the user and use profiling tools to ensure that the code runs in a performant way. Finally, you'll get to grips with Unity's AR Foundation for creating AR experiences for 3D apps and games. By the end of this book, you'll have developed a complete game and will have built a solid foundation using Unity's tooling ecosystem to develop game projects of any scale.

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Table of Contents (24 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Download the color images
Conventions used
Get in touch
Reviews
1
Chapter 1: Designing a Game from Scratch
Chapter 1: Designing a Game from Scratch
Game concept
Game characters
Gameplay
The difficulty balance
Documentation
Summary
Free Chapter
2
Chapter 2: Setting Up Unity
Chapter 2: Setting Up Unity
Why use a game engine such as Unity?
Installing Unity
Creating projects
Summary
3
Chapter 3: Working with Scenes and GameObjects
Chapter 3: Working with Scenes and GameObjects
Manipulating scenes
GameObjects and components
Object hierarchies
Prefabs
Saving scenes and projects
Summary
4
Chapter 4: Grayboxing with Terrain and ProBuilder
Chapter 4: Grayboxing with Terrain and ProBuilder
Creating a Landscape with Terrain
Creating Shapes with ProBuilder
Summary
5
Chapter 5: Importing and Integrating Assets
Chapter 5: Importing and Integrating Assets
Importing assets
Integrating assets
Configuring assets
Summary
6
Chapter 6: Materials and Effects with URP and Shader Graph
Chapter 6: Materials and Effects with URP and Shader Graph
Introducing Shaders
Creating Shaders with Shader Graph
Using Textures
Combining Textures
Applying transparency
Summary
7
Chapter 7: Visual Effects with Particle Systems and VFX Graph
Chapter 7: Visual Effects with Particle Systems and VFX Graph
Introduction to particle systems
Creating fluid simulations
Creating complex simulations with VFX Graph
Summary
8
Chapter 8: Lighting Using the Universal Render Pipeline
Chapter 8: Lighting Using the Universal Render Pipeline
Applying lighting
Applying shadows
Optimizing lighting
Summary
9
Chapter 9: Fullscreen Effects with postprocessing
Chapter 9: Fullscreen Effects with postprocessing
Using postprocessing
Using advanced effects
Summary
10
Chapter 10: Sound and Music Integration
Chapter 10: Sound and Music Integration
Importing audio
Integrating and mixing audio
Summary
11
Chapter 11: User Interface Design
Chapter 11: User Interface Design
Understanding Canvas and RectTransform
Canvas objects types
Creating a responsive UI
Summary
12
Chapter 12: Creating Animations with Animator, Cinemachine, and Timeline
Chapter 12: Creating Animations with Animator, Cinemachine, and Timeline
Using skeletal animations with Animator
Creating dynamic cameras with Cinemachine
Creating cutscenes with Timeline
Summary
13
Chapter 13: Introduction to Unity Scripting with C#
Chapter 13: Introduction to Unity Scripting with C#
Creating C# scripts
Using events and instructions
Summary
14
Chapter 14: Implementing Movement and Spawning
Chapter 14: Implementing Movement and Spawning
Implementing movement
Implementing spawning
Summary
15
Chapter 15: Physics Collisions and Health System
Chapter 15: Physics Collisions and Health System
Configuring Physics
Detecting collisions
Moving with Physics
Summary
16
Chapter 16: Win and Lose Conditions
Chapter 16: Win and Lose Conditions
Creating Object Managers
Creating Game Modes
Improving our code with events
Summary
17
Chapter 17: Scripting the UI, Sounds, and Graphics
Chapter 17: Scripting the UI, Sounds, and Graphics
Scripting the UI
Scripting feedback
Summary
18
Chapter 18: Implementing Game AI for Building Enemies
Chapter 18: Implementing Game AI for Building Enemies
Gathering information with sensors
Making decisions with FSMs
Adding final details
Summary
19
Chapter 19: Scene Performance Optimization
Chapter 19: Scene Performance Optimization
Optimizing graphics
Optimizing processing
Optimizing memory
Summary
20
Chapter 20: Building the Project
Chapter 20: Building the Project
Building a project
Summary
21
Chapter 21: Finishing Touches
Chapter 21: Finishing Touches
Iterating your game
Releasing your game
Summary
22
Chapter 22: Augmented Reality in Unity
Chapter 22: Augmented Reality in Unity
Using AR Foundation
Building for mobile devices
Creating a simple AR game
Summary
23
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Optimizing processing

While graphics usually take up most of the time that a frame needs to be generated, we should never underestimate the cost of badly optimized code and scenes. There are several parts of the game that are still calculated in the CPU, including part of the graphics process (such as the batching calculations), Unity Physics, audio, and our code. Here, we have a lot more causes of performance issues than on the graphics side, so again, instead of discussing every optimization, let's learn how to discover them.

In this section, we will examine the following CPU optimization concepts:

  • Detecting CPU- and GPU-bound
  • Using the CPU Usage Profiler
  • General CPU optimization techniques

We will start by discussing the concepts of CPU- and GPU-bound, which focus on the optimization process, determining whether the problem is GPU- or CPU-related. Later, as with the GPU optimization process, we will look at how to gather the performance data of the...

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