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

To nest is best


The structure that we've set up is called a "nested loop" because we have one iterative loop running inside another.

Inside the second loop, we're using j as the iterator because i is already in use. We're using the new keyword to create a new instance of the Card class, and we're adding it to the array at index aGrid[i,j].

Talk it through and it's not too tricky to understand:

  • The first time through the outside loop, we're at index 0 of our 2D Array.

  • Then in the inner loop, we loop four times. Each time, we stuff a new card into the 2D Array called aGrid.

  • Next, we do the main loop again. The outer index value i increases to 1.

  • On to the inner loop, we cram four new cards into the empty. Now, aGrid contains 8 cards.

  • We keep going until this whole thing plays out. At the end of the nested loop, aGrid is an array containing four arrays, and each of those arrays has four cards in it, for a total of 16 cards.

The reason why 2D Arrays are so handy is that we can easily access stuff inside...