This book will introduce you to C# concepts and programming patterns in Unity that will help you solve common problems. After working on a range of 2D, 3D, AR, and VR game projects, you'll be able to confidently build playable and commercial games.

Unity 2022 by Example 

Get things done, faster. Learn Agile/Scrum, Project Management, Freelancing and Outsourcing.

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Preface

Getting started in Unity 2022 is easy with Unity Hub . Unity Hub serves a few very useful purposes, and we’ll be going through installing it and learning about its features. In this chapter, we’ll not only install Unity Hub and the Unity Editor , but we’ll also break down the different templates that are available to kickstart your game and AR/VR projects. 

Foundational Knowledge of Unity 2022

In Chapter 1 , you were introduced to the Unity Editor and its common windows and toolbars. We also created our first player character – the ladybug! Sadly, the ladybug is currently sitting in a vast nothingness without any goals providing value for its existence. 

Creating a 2D Collection Game

In Chapter 2 , you were introduced to level design, adding different 2D assets, using assets with Tilemap to create a game environment, and creating scripts using the C# language and the Visual Studio ( VS ) IDE to add movement to the player character. 

Completing the Collection Game

In Chapter 3 , you were introduced to Cinemachine for creating a quick but powerful camera-follow system. We learned how to implement a game mechanic for collecting items and displaying game progression with Unity UI, and how to approach game balance while considering win-and-lose conditions. 

Creating a 2D Adventure Game

In Chapter 4 , we covered the larger scope of the adventure game by extending the Game Design Document ( GDD ) for the game and explored the level and environment design while also considering new principles to guide the player. We also imported and prepped artwork for use with additional 2D tooling that will bring the game to life. 

Continuing the Adventure Game

In Chapter 5 , we imported and prepped artwork for use with additional 2D animation tooling, which is bringing the game to life. We also processed player input using an input action map – instead of reading device input directly – with the new Input System, and we made a PlayerController script to move the player. 

Introduction to Object Pooling in Unity 2022

In Chapter 6 , we added a ranged weapon shooting mechanic in an optimized way using Unity’s new object pooling API .

Polishing the Player&rsquo;s Actions and Enemy Behavior

In Chapter 7 , we added polish to the game by applying some simple VFX using post-processing effects (mainly Bloom) with the Universal RP, Shader Graph for a custom 2D shader to make specific parts of a sprite glow, 2D lights to highlight the player, and the Trail Renderer component for a quick VFX win on our bullet sprite. 

Extending the Adventure Game

In Chapter 8 , we started by creating a flexible health system that can be added to any object to give it health, take damage, and heal. The system is extensible, meaning the things that can deal with damage and apply healing can be anything without the need to modify the HealthSystem class because we used interfaces to implement the behavior (not concrete class types). With objects now able to take damage, we continued by updating Player and enemy objects to use health – so, we have the semblance of a real game in the making. 

Completing the Adventure Game

In Chapter 9 , we created a global event system, a quest system, and components that were all loosely coupled and worked together to provide versatile quests for the player to complete. With the systems in place, we made quick work of being able to implement collecting items to notify, update, and satisfy a specific quest requirement. The components created are extensible and reusable for creating any number of quests. 

Creating a 3D First Person Shooter (FPS)

In Chapter 10 , we made some updates to our GDD for our new 3D FPS game. We added specific details about the level design, which helped us to create the habitat’s interior-level environment using a grayboxing kit of modular parts that snap together. We also used Unity ProBuilder to draw out a level map. 

Continuing the FPS Game

In Chapter 11 , we transformed a gray-boxed prototype environment by replacing modular Prefabs with high-quality 3D models, preserved Prefabs with extra behavior in Prefab Mode, and applied new materials. We also added objects to the environment by painting Prefabs, telling surface stories by placing wear-and-tear decals, and implementing lighting and shadow setups for real-time and baked lighting. 

Enhancing the FPS Game with Audio

In Chapter 12 , we dove into all the required details for approaching adding audio to our games. We did this by introducing an audio manager and individual reusable audio player components so that designers and developers can easily add different types of game audio to create a sound experience that encompasses our players. We enforced good coding practices to ensure we’re writing maintainable code, with an emphasis on reusability and extensibility, to simplify the challenges in our daily game developer lives. 

Implementing AI with Sensors, Behavior Trees, and ML-Agents

In Chapter 13 , we made some changes to our 3D FPS game’s enemy NPCs. We upgraded them from 2D to 3D components while still using waypoints for navigation but utilized Unity’s NavMesh system to rapidly implement the patrolling behavior. We also enhanced the complexity of the NPC behavior by adding sensors that allow them to interact with the player and the environment in a more realistic way. 

Entering Mixed Reality with the XR Interaction Toolkit

In Chapter 14 , we wrapped up the development process that started with us creating the 3D first-person shooter ( FPS ) game and ended with us designing a truly immersive boss room encounter – in our own room – using mixed reality ( MR ). To achieve this, we took advantage of the power and flexibility of the Unity XR Interaction Toolkit ( XRI ) and combined 3D assets with our reusable components and systems from our previous work. 

Unity 2022 by Example

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