Book Image

Beginning C++ Game Programming - Second Edition

By : John Horton
Book Image

Beginning C++ Game Programming - Second Edition

By: John Horton

Overview of this book

The second edition of Beginning C++ Game Programming is updated and improved to include the latest features of Visual Studio 2019, SFML, and modern C++ programming techniques. With this book, you’ll get a fun introduction to game programming by building five fully playable games of increasing complexity. You’ll learn to build clones of popular games such as Timberman, Pong, a Zombie survival shooter, a coop puzzle platformer and Space Invaders. The book starts by covering the basics of programming. You’ll study key C++ topics, such as object-oriented programming (OOP) and C++ pointers, and get acquainted with the Standard Template Library (STL). The book helps you learn about collision detection techniques and game physics by building a Pong game. As you build games, you’ll also learn exciting game programming concepts such as particle effects, directional sound (spatialization), OpenGL programmable shaders, spawning objects, and much more. Finally, you’ll explore game design patterns to enhance your C++ game programming skills. By the end of the book, you’ll have gained the knowledge you need to build your own games with exciting features from scratch
Table of Contents (25 chapters)
23
Chapter 23: Before You Go...

Using the Ball class

To put the ball into action, add the following code to make the Ball class available in the main function:

#include "Ball.h"

Add the following highlighted line of code to declare and initialize an instance of the Ball class using the constructor function that we have just coded:

// Create a bat
Bat bat(1920 / 2, 1080 - 20);
// Create a ball
Ball ball(1920 / 2, 0);
// Create a Text object called HUD
Text hud;

Add the following code positioned exactly as highlighted:

/*
Update the bat, the ball and the HUD
****************************************************
****************************************************
****************************************************
*/
// Update the delta time
Time dt = clock.restart();
bat.update(dt);
ball.update(dt);
// Update the HUD text
std::stringstream ss;
ss << "Score:" << score << "    Lives:" << lives;
hud.setString(ss.str());

In the preceding...