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 – What's your malfunction?


One bug we'll notice playing around with this new enemy spawner code is that even after the match is over, the enemies keep moving toward us. There's no "pause" button being hit so this is normal behavior, but it's not what we want. Having them vanish wouldn't look quite right either, so let's just have them stop like the player does. To do this we'll have to start in our AwesomeGame class.

  1. We know the ScoreObjective function can tell us when the number of enemies reaches zero, so that's a good place to start. Let's add a bit of code to ScoreObjective:

    function ScoreObjective(PlayerReplicationInfo Scorer, Int Score)
    {
        local int i;
    
        EnemiesLeft--;
        super.ScoreObjective(Scorer, Score);
    
        if(EnemiesLeft == 0)
        {
            for(i=0; i<EnemySpawners.length; i++)
                EnemySpawners[i].FreezeEnemy();
        }
    }

    Now if EnemiesLeft is 0, it will iterate through the EnemySpawners array and tell all of them to freeze their enemies.

  2. The next...