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A 2D Physics Engine for Games

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Visit box2d.org → RSS feedOn Hacker News Oct 2023 – Jul 2026

Software Engineering 3Systems & Performance 2Games & Graphics 2Open Source 1

1

Box3D, an open source 3D physics engine

I’m happy to announce the release of Box3D, an open source 3D physics engine. It is now available on GitHub. Box3D repository You can think of Box3D as a fork of Box2D, extended with many features needed for 3D games. Some additions: Triangle mesh collision Height-field collision Baked compound collision The core…

2

Simulation Islands

Island management is a fundamental low level feature of physics engines and can have a big impact on solver design and performance. This was one of the first problems I decided to work on for Box2D version 3 (v3). Since I began working on v3 I’ve been comparing several algorithms for island management. My goal has…