Bullet is a 3D Collision Detection and Rigid Body Dynamics Library for games and animation.
Free for commercial use, including Playstation 3, open source under the ZLib License.
Discrete and continuous collision detection, integrated into Blender 3D, and COLLADA 1.4 Physics import.

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    Bounce, Tumble and Splash book is out

    Tony Mullen reported that his new book Bounce, Tumble and Splash! Simulating the Physical World with Blender (Sybex) is out:
    “The book covers all of Blender’s simulation functionality in depth including fluid, soft body, cloth, rigid body ... [More] , particles, hair and much more. This is the first time much of this functionality has been documented in print, [...] [Less]

    Phya: Physical Audio for Virtual Worlds

    Phya is a C library, that was created as an expandable system for adding physical audio to a virtual world. Phya released as Open Source under the ZLib license.
    Also included is a new demo for the Bullet dynamics engine.
    Visit http://www.zenprobe.com/phya or discuss here.

    Bullet 2.69 Physics SDK released: split impulse, tear & pick Cloth and Soft Bodies

    Added split impulse support, penetration recovery won’t add momentum
    cloth/soft body improvements: picking (pick and drag), tearing (click and release without mouse move), preliminary support for btSoftBody versus compound and concave ... [More] trimesh
    Added new btDbvtBroadphase, based on dynamic AABB tree. It has the capability to do view frustum culling and front-to-back traversal. See Extras\CDTestFramework [...] [Less]

    Bullet 2.68 Physics SDK released: Soft Bodies!

    New BulletSoftBody library: cloth, rope and deformable volumes, including interaction with rigid bodies. Thanks Nathanael Presson.
    Added btSliderConstraint
    Added Extras/CdTestFrameWork, Thanks Pierre Terdiman.
    Added posix thread ... [More] support (pthreads), Thanks Enrico.
    Moved ConvexHull into Bullet/src
    Moved optional quickstep and box-box collision detector to Bullet/src. Thanks Russell Smith for permission to re-distribute under the ZLib license.
    [...] [Less]

    JBullet - Java port of Bullet Physics Library

    Jezek announced a new release of JBullet, a Java port of Bullet. You can check the demos on-line:

    Basic Demo:

    Generic Joint Demo:

    Bsp Demo:

    Static Concave Mesh Demo:

    Notes: requires Java 5.0, needs ... [More] permissions for OpenGL rendering
    For more information, visit the JBullet website at http://jbullet.advel.cz [Less]

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Project Cost

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Codebase 559,196
Effort (est.) 153 Person Years
Avg. Salary $ year
$ 8,425,944