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Bullet physics Python API

Bullet Physics provides collision detection and rigid body dynamics for the Blender Game Engine. It takes some settings from Blender that previously were designed for the former collision detection system (called Sumo).

However, new features don’t have an user interface yet, so Python can be used to fill the gap for now.

Features:

  • Vehicle simulation.
  • Rigid body constraints: hinge and point to point (ball socket).
  • Access to internal physics settings, like deactivation time, debugging features.

Easiest is to look at the Bullet physics demos, how to use them. More information can be found here.

Python script example:

import PhysicsConstraints
print dir(PhysicsConstraints)
Note about parameter settings
Since this API is not well documented, it can be unclear what kind of values to use for setting parameters. In general, damping settings should be in the range of 0 to 1 and stiffness settings should not be much higher than about 10.





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User Manual

World and Ambient Effects

World

Introduction
World Background

Ambient Effects

Mist
Stars (2.69)


Game Engine

Introduction

Introduction to the Game Engine
Game Logic Screen Layout

Logic

Logic Properties and States
The Logic Editor

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Introduction to Sensors
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Common Options
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Game States

Introduction

Camera

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World

Introduction

Physics

Introduction
Material Physics
No Collision Object
Static Object
Dynamic Object
Rigid Body Object
Soft Body Object
Vehicle Controller
Sensor Object
Occluder Object

Path Finding

Navigation Mesh Modifier

Game Performance

Introduction
System
Display
Framerate and Profile
Level of Detail

Python API

Introduction
Bullet physics
VideoTexture

Deploying

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Licensing of Blender Game

Android Support

Android Game development