Dev:Source/GameEngine/Physics

Game Engine - Physics

The BGE has its own implementation of physics, separate from the Viewport Physics.

Blender currently uses Bullet2, though it previously supported other engines: Enji, Sumo, Dynamo and ODE. These other engines were removed, leaving only a common PHY_Interface for engines to implement. Bullet implements this interface, but it has grown around it too. Bullet's documentation is a quite good read: ファイル:Dev-Physics-bullet-documentation.pdf

The BGE Physics supports Rigid Bodies and Soft Bodies, but not Particles or Simulations of Fluids, Smoke, Crowds, etc.

There is a stub of a more comprehensive GE physics overview here.