Bullet 2.78 released: FractureDemo, CCD,SAT contact clipping

[bullet_team]

You can download Bullet 2.78 now, based on SVN revision 2384.

New in Bullet 2.78

• Fracture and glueing demo that can break or glue child shapes of a btCompoundShape when certain impulse thresholds are exceeded.
  See Bullet/Demos/FractureDemo
• Breakable constraints, based on an applied impulse threshold.
  See Bullet/Demos/ConstraintDemos
• Improved binary .bullet file format with soft body serialization and
  See Bullet/Demos/SerializeDemo
• Polyhedral contact clipping and optional separating axis test (SAT) as alternative to GJK/EPA and incremental contact manifold, for btPolyhedralConvexShape derived shapes such as btConvexHullShape. Thanks to Pierre Terdiman (NVIDIA/PhysX) for his SAT posting in his blog (we will add his internal shape optimization soon) and Ole from Maxon for the new convex hull computation.
  See Demos/InternalEdgeDemo
• OpenCL and DirectCompute cloth simulation improvements: GPU kernels for capsule collision detection and OpenCL-OpenGL interop
  See Demos/OpenCLClothDemo and Demos/DX11ClothDemo
• Speculative/predictive contact constraints as a method to perform continuous collision response, also discussed in this gamedev.net forum topic.
  See Demos/CcdPhysicsDemo

There are plenty of bugs fixed, but there are still plenty of outstanding issues. Let's try to fix many of them for next 2.79 release, in particular the character controller and internal edge utility. Also, we are going to make a start with Bullet 3.x and Physics Effects 2.x, currently in branches/PhysicsEffects.

Thanks a lot everyone for all the feedback and contributions!
Erwin

[ejtttje]

Congrats and thanks!

[VicariousEnt]

Awesome!

Will a 2.78 Dynamica release be far behind? I would assume we'd need a new build of it to take advantage of the improvments to the .bullet file format. Hopefully full primitive support (capsules & cylinders) and the cone twist contraint will make it into that.

[lora45]

hey so i just downloaded bullet 2.78, and took the following steps:

unziped and found this tutorial: Creating a project from scratch - Physics Simulation Wiki
followed the steps exactly for Cmake, except i found the pictures in the tutorial had some things checked like INSTALL LIBS and i didn't so I ended up checking EVERYTHING possible.
Went into the newly generated BULLET_PHYSICS.vcxproj and built it under debug and release
Saw i had a bunch of new libs in the lib folder in msvn/BulletBuild/lib but did nothing with them
Followed the rest of the steps in the tutorial exactly for setting up the actual project, and i'm sure everythings set up right
Tried to build the last line of code: FAIL


Anyway please help and Thanks in Advance!

24hr-printer-cartridges.com

[workaholic_4]

You have posted a very useful rundown. Congratulations!!! It all worked out:)

[VicariousEnt]

Dynamica 2.78 is out!

[majestik666]

From here :

http://code.google.com/p/bullet/downloads/list

either the zipped version or you can checkout the trunk directly