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 DLLBind


One thing to note is that currently, DLLBind only works with the 32-bit code. If your ConTEXT or batch files are set up to run the Win64 folder's UDK.exe, then you need to change it to run from Win32 for DLLBind to work. You will get a compiler warning about it if you try to compile with the Win64 UDK.exe.

First up, we need to create the DLL. I've provided one in the files included with the book, but for reference sake, here is the code inside it:

#include "stdafx.h"
#include <stdio.h>

extern "C"
{
  __declspec(dllexport) void DLLFunction(wchar_t* s)
  {
    MessageBox(0, s, L"DLL has been called!", MB_OK);
  }
}

Basically, we're creating a function called DLLFunction that takes a wchar_t (equivalent of a string) and pops up an OK box with the string as a message.

  1. Grab AwesomeDLL.dll from the files included with the book and place the .dll in the UDK-AwesomeGame\Binaries\Win32\UserCode folder.

  2. Now for the UnrealScript side of things. We're going to use our...