Book Image

Learning C# by Developing Games with Unity 5.x - Second Edition

Book Image

Learning C# by Developing Games with Unity 5.x - Second Edition

Overview of this book

Unity is a cross-platform game engine that is used to develop 2D and 3D video games. Unity 5 is the latest version, released in March 2015, and adds a real-time global illumination to the games, and its powerful new features help to improve a game’s efficiency. This book will get you started with programming behaviors in C# so you can create 2D games in Unity. You will begin by installing Unity and learning about its features, followed by creating a C# script. We will then deal with topics such as unity scripting for you to understand how codes work so you can create and use C# variables and methods. Moving forward, you will find out how to create, store, and retrieve data from collection of objects. You will also develop an understanding of loops and their use, and you’ll perform object-oriented programming. This will help you to turn your idea into a ready-to-code project and set up a Unity project for production. Finally, you will discover how to create the GameManager class to manage the game play loop, generate game levels, and develop a simple UI for the game. By the end of this book, you will have mastered the art of applying C# in Unity.
Table of Contents (20 chapters)
Learning C# by Developing Games with Unity 5.x Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Declaring a variable and its type


Every variable that we want to use in a script must be declared in a statement. What does that mean? Well, before Unity can use a variable, we have to tell Unity about it first. Okay then, what are we supposed to tell Unity about the variable?

There are only three absolute requirements to declare a variable and they are as follows:

  • We have to specify the type of data that a variable can store

  • We have to provide a name for the variable

  • We have to end the declaration statement with a semicolon

The following is the syntax we use to declare a variable:

typeOfData nameOfTheVariable;

Let's use one of the LearningScript variables as an example; the following is how we declare a variable with the bare minimum requirements:

int number1;

This is what we have:

  • Requirement #1 is the type of data that number1 can store, which in this case is an int, meaning an integer

  • Requirement #2 is a name, which is number1

  • Requirement #3 is the semicolon at the end

The second requirement...