Book Image

Box2D for Flash Games

Book Image

Box2D for Flash Games

Overview of this book

Physics games are getting more and more popular, and Box2D is the best choice if you are looking for a free, stable and robust library to handle physics. With Box2D you can create every kind of 2D physics game, only coding is not the fun part, but the game itself. "Box2D for Flash Games" will guide you through the process of making a Flash physics game starting from the bare bones and taking you by hand through complex features such as forces, joints and motors. As you are learning, your game will have more and more features, like the physics games you are used to playing. The book analyzes two of the most played physics games, and breaks them down to allow readers to build them from scratch in a step-by-step approach. By the end of the book, you will learn how to create basic primitive bodies as well as complex, compound bodies. Motors will give life to cars, catapults and siege machines firing bullets, while a complete collision management will make your game look even more realistic. If you want to make full Flash games with physics, then Box2D for Flash Games will guide you through the entire process of making a Flash physics game.
Table of Contents (15 chapters)
Box2D for Flash Games
About the Author
About the Reviewers

Chapter 2. Adding Bodies to the World

Bodies are what make Box2D games possible. Anything you can move or interact with, is a body . Birds, pigs, and crates in Angry Birds are bodies, as well as the idol and the totem bricks in Totem Destroyer.

During this chapter, you will learn to create every kind of Box2D body, in addition to some other important features, including:

  • Creating circular bodies

  • Creating rectangular bodies

  • Creating any kind of polygon

  • Using debug draw to test your simulation

  • Defining body types: static, dynamic, or kinematic

  • Setting material attributes: density, friction, and restitution

  • Units of measurement

  • Creating compound objects

By the end of the chapter, you will have your first Totem Destroyer level ready to play with. This will be a long chapter, so let's drive straight to the point.