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 ignores


This will be a simple experiment; we're just going to have AwesomeEnemy not take any damage while it's fleeing.

  1. At the top of AwesomeEnemy's Fleeing state, add the following line:

    ignores TakeDamage;
  2. This one's pretty hard to test, but adding this line will make AwesomeEnemy ignore calls to TakeDamage while it is in the Fleeing state.

What just happened?

If we had more than one function that we wanted to ignore, then we would separate them with commas. For example, if we wanted it to ignore the EndAttack function as well, we would write it like this:

ignores TakeDamage, EndAttack;

Labels and latent functions

States can have special functions that can only be executed from within that state, code that can't be called from normal functions. These are called latent functions. In addition, states can use labels to control the flow of state code. Let's take a look.