My physics engine

Work in progress

This website is a work-in-progress implementation of my homemade physics engine.

The Drafts page holds my preliminaries experiments to get myself familiar with different math concepts. The Tests engine page is had various small projects using the engine allowing me to test it while I implement it.

Resources

General introduction

• "2D Physics Engine Overview" An introduction to a 2D Rigid Body Physics Engine distributed with myphysicslab
• "Physically Based Modeling: Principles and Practice Differential Equation Basics" The maths behind Euler's integration and timesteps
• "Game Physics Engine Development - Ian Millington" A game physics book emphasizing building an actual engine.

Engine implementation

• Integration bascis Discussion of various integration methods to run an engine.
• Fix your timestep Various approaches and good advice to handle timesteps in an engine.
• "When should I use a fixed or variable time step?" (citing "fix your timestep")

Collisions

• "What is the best way to handle simultaneous collisions in a physics engine?"
• "Multiple Simultaneous Collisions" An explanation of how myphysicslab's engine handles collisions

Maths

• "Circle line-segment collision detection algorithm?"

Other implementations and examples

• Rigid Body Collisions
• Rigid Body Forces

Other

• "Physics Based Animation (Graphics Series) 1st Edition" (ISBN 978-1584503804) A book I'm considering buying.