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 – Expanding AwesomeGame


We'll start with something simple. Usually when you're working on a project you might not want to go straight toward your goal, but instead you'd use a process like the one we're about to use to slowly work your game towards your desired goal. This helps to break down tasks even further and make sure your code is working each step of the way.

Let's start by making it so we win the game by collecting all of our AwesomeWeaponUpgrade actors.

  1. The first thing we need to do is count the number of AwesomeWeaponUpgrade actors and set our goal to that number. We'll use the foreach iterator to find them. Let's add a PostBeginPlay function to our AwesomeGame class:

    simulated function PostBeginPlay()
    {
        local AwesomeWeaponUpgrade AW;
    
        super.PostBeginPlay();
    
        GoalScore = 0;
    
        foreach DynamicActors(class'AwesomeWeaponUpgrade', AW)
            GoalScore++;
    }

    GoalScore is a variable declared in GameInfo that holds the score limit for the game. When this number...