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 rotators


Before we use rotators on our AwesomeActor, we need to add some visual clue to let us know that it's actually rotating. To do that we're going to add another bit to our default properties like the sprite, but this time it will be an arrow we'll be able to see in the editor.

  1. Below the sprite in the default properties, add this:

    Begin Object Class=ArrowComponent Name=Arrow
    End Object
    Components.Add(Arrow)
  2. We're going to log our actor's current rotation, so inside our PostBeginPlay add this:

    'log("Rotation:" @ Rotation);

    Our class should now look like this:

    class AwesomeActor extends Actor
        placeable;
    
    function PostBeginPlay()
    {
        'log("Rotation:" @ Rotation);
    }
    
    defaultproperties
    {
        Begin Object Class=SpriteComponent Name=Sprite
            Sprite=Texture2D'EditorResources.S_NavP'
        End Object
        Components.Add(Sprite)
    
       Begin Object Class=ArrowComponent Name=Arrow
       End Object
       Components.Add(Arrow)
    }
  3. Compile and take a look in the editor. Our actor now...