Cocos2d for iPhone 1 Game Development Cookbook

Chapter 4. Physics

In this chapter, we will cover the following points:

• Box2D setup and debug drawing
• Creating collision response routines
• Using different shapes
• Dragging and collision filtering
• Manipulating physical properties
• Applying impulses
• Applying forces
• Asynchronous body destruction
• Using joints
• Creating a vehicle
• Character movement
• Simulating bullets
• Simulating and rendering a rope
• Creating a top-down isometric game engine

Introduction

For years, physics engines have been used in video games to add a sense of realism to the action onscreen. In many games, physics plays a crucial role within the gameplay. Cocos2d comes bundled with two popular 2D physics engines: Box2D and Chipmunk . In this chapter, we will explain the most common uses of physics in ...