Search found 127 matches

by SteveBaker
Sat Mar 10, 2007 12:43 am
Forum: General Bullet Physics Support and Feedback
Topic: Question about appConstraintDemo
Replies: 6
Views: 3132

Hey, Which degrees of freedom would you like to lock? You can have a Hinge, point2point ( ball and socket ) or a Generic6Dof joint. The Demos/ConstraintDemo directory in the download of the bullet sdk has examples of them all. The Generic6Dof constraint is the only one that you can sellectively loc...
by SteveBaker
Wed Mar 07, 2007 1:39 am
Forum: General Bullet Physics Support and Feedback
Topic: discontinous constraints
Replies: 3
Views: 3795

I'm playing around with constraints again (it's been a while since I've had time) - and I just can't get any 6-dof constraints to behave themselves no matter what. I want something that can slide up and down in Y and rotate about the X axis - so two of the six DOF's are "limits" and the remaining fo...
by SteveBaker
Tue Jan 02, 2007 11:42 pm
Forum: General Bullet Physics Support and Feedback
Topic: Java physics engines?
Replies: 7
Views: 4896

"Has anyone written Java bindings for Bullet?" Ping that. Has anyone done so? If not, I'll be starting this task Real Soon Now, but don't want to continue with an effort that someone else has accomplished. BTW: Hi, everyone. ;) Theoretically, you could use 'swig' to do that automatically - dunno ho...
by SteveBaker
Thu Nov 30, 2006 1:38 am
Forum: General Bullet Physics Support and Feedback
Topic: linux xlib bug
Replies: 9
Views: 4910

Yeah, but Bullet would be better if we had a build system for Unix that works out-of-the-box. I agree - but it wouldn't have helped in this case. You need to 'su root' to install most serious packages - and if you forget to log out - and if you have your X permissions set 'right' - it'll refuse to ...
by SteveBaker
Thu Nov 30, 2006 1:22 am
Forum: General Bullet Physics Support and Feedback
Topic: linux xlib bug
Replies: 9
Views: 4910

ChrisC wrote:I su'd to make install in jam and then forget to exit :oops:
Ha! I win!
by SteveBaker
Wed Nov 29, 2006 11:16 pm
Forum: General Bullet Physics Support and Feedback
Topic: linux xlib bug
Replies: 9
Views: 4910

Theres no problem with 2.37, god knows what caused the auth problem with X most strange, I cant replicate it! Well, if you type: su {some other user} ...enter the password - then run your program (without setting 'xhost') - it'll do it again. But so will xclock, xcalc, etc. What's cool is that you ...
by SteveBaker
Wed Nov 29, 2006 8:56 pm
Forum: General Bullet Physics Support and Feedback
Topic: linux xlib bug
Replies: 9
Views: 4910

Re: FYI

Just grabbed svn trunk instead of the tgz mentioned on the wiki and it doesnt do the same I'm 99% certain that this has nothing whatever to do with Bullet or the demo program itself. It's much more lilkely that you were remotely-logged in somewhere or su'ed to another user when you were having prob...
by SteveBaker
Wed Nov 29, 2006 8:49 pm
Forum: General Bullet Physics Support and Feedback
Topic: linux xlib bug
Replies: 9
Views: 4910

Let me explain what the message means. I apologise for the length of the explanation - but I don't know how much you already know so I have to start from scratch. The X-windows system is split between the 'client' and the 'server'. The client and server theoretically talk to each other over a networ...
by SteveBaker
Fri Nov 24, 2006 10:35 pm
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: Pricing strategy of a physics engine (Meqon testcase)
Replies: 4
Views: 4062

Re: Pricing strategy of a physics engine (Meqon testcase)

The market has changed, with Ageia giving away their PhysX (Novodex/Meqon) for free. So do you think PhysX is being given away in the hope that this will generate sales of the PhysX hardware? That seems like something of a desperation measure. It's hard to imagine many gamers buying that thing in t...
by SteveBaker
Tue Nov 14, 2006 4:45 pm
Forum: General Bullet Physics Support and Feedback
Topic: Bullet on GPU
Replies: 128
Views: 195004

Re: Debugging the GPU demo..

We don't understand why the vertex shader coide doesn't work under Windows - that's a very bizarre thing that certainly slows the demo down somewhat. This is not a big issue on my opinion, for the moment - maybe this could be useful later when tuning the code for faster execution. What seems to be ...
by SteveBaker
Tue Nov 14, 2006 3:25 pm
Forum: General Bullet Physics Support and Feedback
Topic: Bullet on GPU
Replies: 128
Views: 195004

Re: Something wrong with the GPU demo..

Hallo, I am testing your GPU demo since I am going to implement some GP-GPU stuff for my multibody simulator. The demo is very interesting, but I found some problems on my system. There are a lot of strange things about the way this demo does or does not run on different systems. Unfortunately, I o...
by SteveBaker
Fri Nov 03, 2006 2:39 am
Forum: General Bullet Physics Support and Feedback
Topic: API refactoring (was ugliness)
Replies: 45
Views: 21943

Many thanks!

I'll have a bit of time over the weekend - I'm getting my game back up and working with all of this refactored goodness.
by SteveBaker
Wed Nov 01, 2006 4:34 am
Forum: General Bullet Physics Support and Feedback
Topic: m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?!?
Replies: 3
Views: 3398

m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?!?

OK - I give up - what is this assert telling me?

../bullet/src/BulletDynamics/Dynamics/btRigidBody.h:199: void btRigidBody::setLinearVelocity(const btVector3&): Assertion `m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT' failed.
by SteveBaker
Wed Nov 01, 2006 4:01 am
Forum: General Bullet Physics Support and Feedback
Topic: Newbie Question
Replies: 5
Views: 3499

Woah! I just noticed!

TuxKart with Bullet physics! Now that's a weird experience...I wrote the original TuxKart (upon which SuperTuxKart is built) - it's very strange to see one's own ancient offspring popping up in places like this!

TuxKart with physics....WOW!
by SteveBaker
Wed Nov 01, 2006 3:57 am
Forum: General Bullet Physics Support and Feedback
Topic: Newbie Question
Replies: 5
Views: 3499

BTW, there is a 'no newline at end of file' warning for btDefaultMotionState.h :)
Erwin has a real problem 'habit' with creating these! I fix 'em up as fast as I can - but it's an uphill battle!

:-)