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

High score and persisting data


Pretty much every game has some sort of scoring system. You will now learn how to write simple code that calculates the score based on the distance the Player has traveled since the start of the level. We will then use this score value and store it in Unity PlayerPrefs to make sure that the value is remembered between sessions. PlayerPrefs is a very useful built-in Unity class that allows us to store and access data between Unity sessions.

Let's write the following method in the Player class:

We have finally come to a real-life example of a method that returns something. As you can see, the GetDistance() method returns a float value—the distance between the starting point and the current position of the player game object.

I won't go too much into the detai here. I encourage you to dive into the Unity Scripting Reference and search for Vector2.Distance to understand exactly how it works.

Having the GetDistance() method working, we can now call it from any place...