Book Image

Unity 4.x Game Development by Example: Beginner's Guide - Third Edition

By : Ryan Henson Creighton
Book Image

Unity 4.x Game Development by Example: Beginner's Guide - Third Edition

By: Ryan Henson Creighton

Overview of this book

Unity is one of the biggest game engines in the world, providing the user with a range of important tools that they need to bring their ideas into reality. Beginner game developers are optimistic, passionate, and ambitious, but that ambition can be dangerous! Too often, budding indie developers and hobbyists bite off more than they can chew. Games like Angry Birds, Cut the Rope, and Fruit Ninja are fun, simple games that have delighted players and delivered big profits to their creators. This is the perfect climate for new game developers to succeed by creating simple games with Unity, starting today. This book teaches you the ins and outs of the unique Unity game engine interface. Clear and concise code examples written in both Unity Javascript and C# take you through the step-by-step process of building five small, functional games. With this understanding you can start making your own mark on the game industry! With absolutely no programming or game development experience, you will learn how to build five simple games in Unity by following step-by-step instructions, peppered with amusing analogies and anecdotes from an experienced indie developer. Following a primer on simplifying your game ideas to that single “something” that keeps players coming back for more, dive into the Unity game engine by creating a simple bat-and-ball game. From there, you'll build a complete memory game using only the Unity GUI system. After building a 2.5D mouse avoider game, you'll learn how to re-skin the project to completely change the game's theme. Incorporating everything you've learned, you'll return to complete the bat-and-ball game by adding scoring, replay flow, sound effects, and animations. Finally, in the new bonus chapter, you'll program some simple AI (Artificial Intelligence) for a tic tac toe game. "Unity 4.x Game Development by Example" is a fun and light-hearted exploration of one of the most powerful game engines on the market today. Find out what all the fuss is about by getting up to speed using this book!
Table of Contents (22 chapters)
Unity 4.x Game Development by Example Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Here comes the drop


With this groundwork literally laid, we're ready to add some code so that the X and O pieces fall into the Grid when the Squares are clicked.

Declare the following variables at the top of the GameLogic script, beneath the #pragma strict line:

  • var XPiece:GameObject;

  • var OPiece:GameObject;

Click on the GameLogic GameObject. Drag the X and O pieces into the Inspector in those variable slots.

Add this line to the ClickSquare function:

print("Square " + x + "," + y + " was clicked");
Instantiate(XPiece, new Vector3(-2.8,1,-19.7), Quaternion.identity); 

This line creates a new instance of the XPiece Prefab at a hard-coded position on the screen.

What just happened – to collide or not to collide?

Test the game and click on any of the invisible Squares. The X settles nicely into the top-left slot on the grid, as shown in the following screenshot. (If this doesn't happen, it's possible that you forgot to set the X or its Cube children's positions to 0,0,0 while you were creating the...