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 if/else


Let's write some code to see if/else in action for ourselves.

  1. Take the following code:

    var int Int1, Int2;
    
    function PostBeginPlay()
    {
        if(Int1 > Int2)
            'log("Int1 is greater than Int2");
        else if(Int1 == Int2)
            'log("Int1 is equal to Int2");
        else
            'log("Int1 is less than Int2");
    }
    
    defaultproperties
    {
        Int1=5
        Int2=2
    }
  2. What would we expect the result to be? Let's look at the log for the answer:

    [0007.72] ScriptLog: Int1 is greater than Int2

What just happened?

We can see that the if statement is executed and not the else if or else statements. Notice that in this example we didn't use the curly brackets in our statements. If there is only one line after the if, else if, or else statements brackets aren't necessary. However, if there are two or more lines, we would need to use brackets.

For

For is a different kind of control statement called an iterator. It will execute the code we write a specific number of times until a...