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 const keyword to optimize your code


We have already seen in previous recipes that a const keyword is used to make data or a pointer constant so that we cannot change the value or address, respectively. There is one more advantage of using the const keyword. This is particularly useful in the object-oriented paradigm.

Getting ready

For this recipe, you will need a Windows machine and an installed version of Visual Studio.

How to do it…

In this recipe, we will find out how easy it is to use the const keyword effectively:

#include <iostream>

class A
{
public:

  void Calc()const
  {
    Add(a, b);
    //a = 9;       // Not Allowed
  }
  A()
  {
    a = 10;
    b = 10;

  }
private:
  
  int a, b;
  void Add(int a, int b)const
  {
    
    std::cout << a + b << std::endl;
  }
};

int main()
{
  
  A _a;
  _a.Calc();

  int a;
  std::cin >> a;

  return 0;
}

How it works…

In this example, we are writing a simple application to add two numbers. The first function is...