Book Image

Unity 2D Game Development Cookbook

By : Claudio Scolastici
Book Image

Unity 2D Game Development Cookbook

By: Claudio Scolastici

Overview of this book

<p>Unity is a powerful game development engine that provides rich functionalities to create 2D and 3D games.</p> <p>Unity 2D Game Development Cookbook is a practical guide to creating games with Unity. The book aims to serve the purpose of exploring problematic concepts in Unity for 2D game development, offering over 50 recipes that are easy to understand and to implement, thanks to the step-by-step explanations and the custom assets provided. The practical recipes provided in the book show clearly and concisely how to do things right in Unity. By the end of this book, you'll be near "experts" when dealing with Unity. You will also understand how to resolve issues and be able to comfortably offer solutions for 2D game development.</p>

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Unity 2D Game Development Cookbook
Claudio Scolastici
Feb, 2015 | 256 pages
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Table of Contents (15 chapters)
Unity 2D Game Development Cookbook
Unity 2D Game Development Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Importing 3D Models and Animations
Importing 3D Models and Animations
Introduction
Setting up a scene in Maya
Using groups to rotate FBX files
Exporting FBX files from Maya
Configuring imported FBX files in Unity
Exporting animations
Configuring imported animations in Unity Inspector
2
2D Assets for Unity
2D Assets for Unity
Introduction
Importing textures and setting them to Inspector
Configuring transparency
Creating materials
Setting materials' names in Maya
Setting the ambient light in Unity
Texture atlases
Animated materials
3
Animating a Game Character
Animating a Game Character
Introduction
Creating the animation tree
Dealing with transitions
Coding the Boolean-based transitions
Working with float parameters
Coding the float-based transitions
Creating Blend Tree
Animation layers – creating masks
Animation layers – adding a second animation layer
4
Taking Control
Taking Control
Introduction
Creating a bumped material
Importing packages
Setting the Character Controller
Adding Rigidbody
Coding physics controls
Collision management
5
Building Up the Game Level
Building Up the Game Level
Introduction
Creating Prefabs
Coding a scrolling background
Adding platforms
Programming the character controls
Setting up an Animator
Adding collectibles to the game level
Camera setup and controls
6
Game Scenes and the Graphic Interface
Game Scenes and the Graphic Interface
Introduction
The game manager
Loading a new scene at runtime
Setting game exit conditions – character death
Setting game exit conditions – goals met
Using OnGUI() to display game data
Display the number of collected items
Game Won and Game Over
7
Improving Your Gaming Experience
Improving Your Gaming Experience
Introduction
Importing audio clips
The Audio Source component
Coding audio
Particle systems
Instantiating a particle system at runtime
Game options – volume level
Game options – toggling audio
Playing videoclips in the scene
8
Sprites, Spritesheets, and 2D Animation in Unity
Sprites, Spritesheets, and 2D Animation in Unity
Introduction
Setting up sprites
Multiple sprites
Animating with spritesheets
Preparing the character sprites
Parenting sprites
Keyframe sprite animation
Index
Index

Game options – toggling audio

In this recipe, we will show you how toggle buttons for the user interface of games made with Unity can be created and managed.

Getting ready

Like the previous recipe, you must have the Options Screen scene loaded in the Editor and the GUI script open in Monodevelop.

How to do it...

  1. Let's begin by creating a bool variable to control whether the toggle is on or off. We do this by adding the following declaration at the top of the script:

    private bool toggleAudio = true;

  2. Next, we create the toggle button on the screen by adding the following line inside the OnGUI() function:

    toggleAudio = GUI.Toggle(new Rect(100, 30, 10, 10), toggleAudio, "Toggle Audio");

  3. Now, in the Update() function, we add a line to ensure that the audio is enabled, depending on the toggleAudio value:

    audio.enabled = toggleAudio;

  4. The following screenshot provides the complete GUI script we used for the Options Screen scene:

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