Book Image

C++ Game Development By Example

By : Siddharth Shekar
Book Image

C++ Game Development By Example

By: Siddharth Shekar

Overview of this book

Although numerous languages are currently being used to develop games, C++ remains the standard for fabricating expert libraries and tool chains for game development. This book introduces you to the world of game development with C++. C++ Game Development By Example starts by touching upon the basic concepts of math, programming, and computer graphics and creating a simple side-scrolling action 2D game. You'll build a solid foundation by studying basic game concepts such as creating game loops, rendering 2D game scenes using SFML, 2D sprite creation and animation, and collision detection. The book will help you advance to creating a 3D physics puzzle game using modern OpenGL and the Bullet physics engine. You'll understand the graphics pipeline, which entails creating 3D objects using vertex and index buffers and rendering them to the scene using vertex and fragment shaders. Finally, you'll create a basic project using the Vulkan library that'll help you get to grips with creating swap chains, image views, render passes, and frame buffers for building high-performance graphics in your games. By the end of this book, you’ll be ready with 3 compelling projects created with SFML, the Vulkan API, and OpenGL, and you'll be able take your game and graphics programming skills to the next level.
Table of Contents (18 chapters)
Free Chapter
1
Section 1: Basic Concepts
4
Section 2: SFML 2D Game Development
8
Section 3: Modern OpenGL 3D Game Development
12
Section 4: Rendering 3D Objects with Vulkan

Finishing the Gameloop and adding scoring

The following steps will show you how to finish the Gameloop and add scoring to the game code:

  1. Add two new variables to the source.cpp file: one of the int type, called score, and one of the bool type, called gameover. Initialize the score to 0 and gameover to true:
std::vector<Enemy*> enemies; 
std::vector<Rocket*> rockets; 
 
float currentTime; 
float prevTime = 0.0f; 
 
int score = 0; 
bool gameover = true; 
  1. Create a new function called reset(). We will use this to reset the variables. Create a prototype for the reset function at the top of the source.cpp file:
bool checkCollision(sf::Sprite sprite1, sf::Sprite sprite2); 
void reset(); 

At the bottom of the source.cpp file, after where we created the checkCollision function, add the reset function itself so that when the game resets, all the values are also reset. To...