Book Image

Unity Game Development Essentials

By : Will Goldstone
Book Image

Unity Game Development Essentials

By: Will Goldstone

Overview of this book

Game engines are central to the video games we know and love. From the artwork to the mathematics that underpin the frames onscreen, the engine calls the shots. Aside from offering one of the leading 3D game engines, Unity also provides a superlative development tool ñ a tool that can produce professional standard games for Mac, PC, and the Unity Web Player. This book is a complete exercise in game development covering environments, physics, sound, particles, and much more, to get you up and working with Unity quickly. Taking a practical approach, this book will introduce you to the concepts of developing 3D games before getting to grips with development in Unity itself. From creating 3D worlds to scripting and creating simple game elements you will learn everything you'll need to get started with game development for the PC, Mac, and Web. This book is designed to cover a set of easy to follow examples, which culminate in the production of a First Person 3D game, complete with an interactive island environment. By introducing common concepts of game and 3D production, you'll explore Unity to make a character interact with the game world, and build puzzles for the player to solve, in order to complete the game. At the end of the book, you will have a fully working 3D game and all the skills required to extend the game further, giving your end-user, the player, the best experience possible. Soon you will be creating your own 3D games with ease!
Table of Contents (17 chapters)
Unity Game Development Essentials
Credits
About the Author
About the Reviewers
Preface
Index

Battery collection with triggers


To trigger the differing states of our Battery GUI, we will use a function called OnTriggerEnter() to detect interaction with objects that have trigger mode colliders, that is, our collectable batteries.

Before we add this function to our PlayerCollisions script, we will add a public member variable at the top to hold an audio clip to be played when the player picks up a battery as a form of audio-based feedback to back up the GUI element.

Open the PlayerCollisions script by double-clicking on its icon in the Scripts folder of the Project panel. This will launch the script in the script editor, or simply switch back to it for you, if you already have the file opened. Add a public member variable for the audio clip to the top of the script by adding the line:

var batteryCollect : AudioClip;

Remember that this is not assigned in the script, but simply left with a data type (AudioClip) so that it may be assigned in the Inspector later.

Next, place your cursor...