Book Image

SFML Game Development

By : Artur Moreira, Henrik Vogelius Hansson, Jan Haller, Henrik Valter Vogelius, SFML
Book Image

SFML Game Development

By: Artur Moreira, Henrik Vogelius Hansson, Jan Haller, Henrik Valter Vogelius, SFML

Overview of this book

Game development comprises the combination of many different aspects such as game logics, graphics, audio, user input, physics and much more. SFML is an Open Source C++ library designed to make game development more accessible, exposing multimedia components to the user through a simple, yet powerful interface. If you are a C++ programmer with a stack of ideas in your head and seeking a platform for implementation, your search ends here.Starting with nothing more than a blank screen, SFML Game Development will provide you with all the guidance you need to create your first fully featured 2D game using SFML 2.0. By the end, you'll have learned the basic principles of game development, including advanced topics such as how to network your game, how to utilize particle systems and much more.SFML Game Development starts with an overview of windows, graphics, and user inputs. After this brief introduction, you will start to get to grips with SFML by building up a world of different game objects, and implementing more and more gameplay features. Eventually, you'll be handling advanced visual effects, audio effects and network programming like an old pro. New concepts are discussed, while the code steadily develops.SFML Game Development will get you started with animations, particle effects and shaders. As well as these fundamental game aspects, we're also covering network programming to the extent where you'll be able to support the game running from two different machines. The most important part, the gameplay implementation with enemies and missiles, will make up the core of our top-scrolling airplane shoot' em-up game!You will learn everything you need in SFML Game Development in order to start with game development and come closer to creating your own game.
Table of Contents (18 chapters)
SFML Game Development
About the Authors
About the Reviewers

Cheating prevention

By now you probably are scratching your chin and asking yourself: "But is this secure? Is a hacky player able to exploit the game to its benefit somehow?"

If you answered "No" to yourself, you are correct. By all means we would like to explain you how to make every little thing cheat-proof. However, we don't want to give you the fish by bloating the code with lots of validations; but rather, explicitly writing about how you can learn how to fish.

The current game, as is, is not cheat-proof whatsoever. There are a lot of validations that are not performed, so it will only work predictably until a clever user starts doing packet-sniffing and sending things that are not really expected by our protocol.

Let's try to understand how cheating could be achieved in our particular case, and how would we prevent it by looking at a few examples:

  • In the client's tick, we let the client decide where its planes are going to be at. If a user with malicious intent sent this packet after modifying...