Book Image

C++ Game Development Cookbook

By : Druhin Mukherjee
Book Image

C++ Game Development Cookbook

By: Druhin Mukherjee

Overview of this book

<p>C++ is one of the preferred languages for game development as it supports a variety of coding styles that provides low-level access to the system. C++ is still used as a preferred game programming language by many as it gives game programmers control of the entire architecture, including memory patterns and usage. However, there is little information available on how to harness the advanced features of C++ to build robust games.</p> <p>This book will teach you techniques to develop logic and game code using C++. The primary goal of this book is to teach you to create high-quality games using C++ game programming scripts and techniques, regardless of the library or game engine you use. It will show you how to make use of the object-oriented capabilities of C++ so you can write well-structured and powerful games of any genre. The book also explores important areas such as physics programming and audio programming, and gives you other useful tips and tricks to improve your code.</p> <p>By the end of this book, you will be competent in game programming using C++, and will be able to develop your own games in C++.</p>
Table of Contents (20 chapters)
C++ Game Development Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Using the observer pattern


The observer design pattern is one which is not commonly used in games, but it should be used more often by game developers as it is a very smart way to handle notifications. In the observer design pattern, a component maintains a one-to-many relationship with other components. This means when the main component changes, all the dependent components also update. Imagine a physics system. We want enemy1 and enemy2 to update as soon as the physics system updates, so we should use this pattern.

Getting ready

For this recipe, you will need a Windows machine with a working copy of Visual Studio.

How to do it…

In this recipe, we will find out how easy it is to implement the observer pattern:

  1. Open Visual Studio.

  2. Create a new C++ project.

  3. Select a Win32 Windows application.

  4. Add a source file called Source.cpp.

  5. Add the following lines of code to it:

    #include <iostream>
    #include <vector>
    #include <conio.h>
    
    using namespace std;
    
    class PhysicsSystem {
      
      vector...