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 the for statement


  1. Let's examine the following code:

    var int m;
    
    function PostBeginPlay()
    {
        for(m = 0; m < 3; m++)
        {
            'log("Stop hitting yourself." @ m);
        }
    }

    This is a simple way of writing the following code:

    m = 0;
    'log(m);
    m = 1;
    'log(m);
    m = 2;
    'log(m);

It might not seem like it's saving much time in this simple example, but consider a case where we would want to run the loop a hundred times. Putting it in a for loop would save a lot of unnecessary code!

If we write the PostBeginPlay function above into our AwesomeActor.uc class and compile it, then take a look at the log, we can see that it executed the code inside the for loop three times:

[0007.57] ScriptLog: Stop hitting yourself. 0
[0007.57] ScriptLog: Stop hitting yourself. 1
[0007.57] ScriptLog: Stop hitting yourself. 2

What just happened?

The first part of the for statement lets us set a variable to an initial value. Most of the time it will be 0, but there may be times when we need a different...