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

The while loop


There is one more type of loop that I want to talk about. It has pretty much the simplest form of any loop. The while loop does not create any variable to control its execution. To create a while loop, start with the keyword while, followed by brackets. Within the brackets, you must write a condition. Whenever the condition is true, the code inside the loop block will be executed:

It's worth knowing that this is quite a dangerous loop and you need to know how to use it. As a while loop does not create any control variable and is not iterating through the list there is a possible scenario where a condition is always true. This will create an infinite loop—a loop that will go on forever. An infinite loop never finishes executing the loop block, and most certainly, it will crash your program and even Unity Editor.

To avoid this nasty situation—when Unity crashes and we don't even know why—we can use a variable to control the flow of the while loop, like we did in our for loop....