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Game Physics Cookbook

You're reading from Game Physics Cookbook Discover over 100 easy-to-follow recipes to help you implement efficient game physics and collision detection in your games

Product type Paperback

Published in Mar 2017

Publisher Packt

ISBN-13 9781787123663

Length 480 pages

Edition 1st Edition

Languages

C++

Tools

Unity

Concepts

Game Design

Author (1):

Gabor Szauer

View More author details

Table of Contents (19) Chapters

Preface

1. Vectors FREE CHAPTER

2. Matrices

3. Matrix Transformations

4. 2D Primitive Shapes

5. 2D Collisions

6. 2D Optimizations

7. 3D Primitive Shapes

8. 3D Point Tests

9. 3D Shape Intersections

10. 3D Line Intersections

11. Triangles and Meshes

12. Models and Scenes

13. Camera and Frustum

14. Constraint Solving

15. Manifolds and Impulses

16. Springs and Joints

A. Advanced Topics

Index

Physics system

It is finally time to start implementing a basic Physics Engine. By the end of this chapter we will have particles flying around the screen in a physically realistic way. Before we start implementing our physics simulation, let's take a minute to discuss what we will be simulating, the rigidbody.

A rigidbody is an object that does not change its shape, the object is rigid. Think about dropping a ball filled with air on the ground. At the point of impact the ball would squash, and then it would stretch as it bounces back up. This ball is not rigid; it changes shape (but not volume), which allows it to bounce. Now imagine a ball of solid steel being dropped. It would not change in shape or volume, but it would not bounce either.

Our object can bounce around because we can model the math behind what it would be like if they bounced, but really they will be rigid. Our simulated objects will never change shape as a result of a physical reaction.

A scene can have hundreds of...

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Authors (1)

Gabor Szauer

Gabor Szauer

Gabor Szauer has been making games since 2010. He graduated from Full Sail University in 2010 with a bachelor's degree in game development. Gabor maintains an active Twitter presence, and maintains a programming-oriented game development blog. Gabor's previously published books are Game Physics Programming Cookbook and Lua Quick Start Guide, both published by Packt.

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