Book Image

Unreal Development Kit Game Programming with UnrealScript: Beginner's Guide

By : Rachel Cordone
Book Image

Unreal Development Kit Game Programming with UnrealScript: Beginner's Guide

By: Rachel Cordone

Overview of this book

Unreal Development Kit is the free edition of Unreal Engine—the largest game engine in existence with hundreds of shipped commercial titles. The Unreal Engine is a very powerful tool for game development but with something so complex it's hard to know where to start.This book will teach you how to use the UnrealScript language to create your own games with the Unreal Development Kit by using an example game that you can create and play for yourself. It breaks down the UnrealScript language into easy to follow chapters that will quickly bring you up to speed with UnrealScript game programming.Unreal Development Kit Game Programming with UnrealScript takes you through the UnrealScript language for the Unreal Development Kit. It starts by walking through a project setup and setting up programs to write and browse code. It then takes you through using variables, functions, and custom classes to alter the game's behavior and create our own functionality. The use and creation of Kismet is also covered. Later, using replication to create and test multiplayer games is discussed. The book closes with code optimization and error handling as well as a few of the less common but useful features of UnrealScript.
Table of Contents (18 chapters)
Unreal Development Kit Game Programming with UnrealScript
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – Using structs


Going back to our basket of kittens example, what if there were other things in the basket besides kittens? How would we represent them?

  1. Let's create a struct at the top of our AwesomeActor class and put a few things in it.

    struct Basket
    {
        var string BasketColor;
        var int NumberOfKittens, BallsOfString;
        var float BasketSize;
    };

    Now we have two types of items in the basket as well as some variables to describe the basket itself.

  2. Now we need a variable of that struct so we can use it:

    var Basket MyBasket;
  3. Now we can change the values in our PostBeginPlay function.

    function PostBeginPlay()
    {
        MyBasket.NumberOfKittens = 4;
        MyBasket.BasketColor = "Yellow";
        MyBasket.BasketSize = 12.0;
        MyBasket.BallsOfString = 2;}

    That seems easy enough to handle. Let's try something a bit more complex.

  4. I heard you like structs, so we'll Inception-ize it by adding a struct inside a struct.

    struct SmallBox
    {
        var int Chocolates;
        var int Cookies;
    };
  5. Now let's...