Real-Time Physics Simulation Forum

I am wondering about btRigidBody and when you dynamically allocate these objects will Bullet delete them once you add them to btDiscreteDynamicsWorld? e.g. btRigidBody* groundRigidBody = new btRigidBody(groundRigidBodyCI); dynamicsWorld->addRigidBody(groundRigidBody); since I added it to dynamicsWor...

I am wondering how well will Bullet work for structures e.g. buildings, bridges, various other made up objects? Say you have a wrecking ball, tidal-wave, or earthquake to try and simulate some force to act on the structure to bring it down? And what would need to look at specifically in Bullet befor...

I used the similar code iter->RigidBody()->setLinearVelocity((btVector3(iter->CentralVelocity().LinearX, iter->CentralVelocity().LinearY, iter->CentralVelocity().LinearZ))); iter->RigidBody()->setAngularVelocity((btVector3(iter->CentralVelocity().AngularX, iter->CentralVelocity().AngularY, iter->Ce...

Fixed it I used setCenterOfMassTransform()

Thanks

I can move one of my objects by calling setWorldTransform(), but for some reason some of my objects are not updating when I call setWorldTransform()? What I have is coins falling from the sky and when they hit the ground or hit by the user, I want to randomly place them up in the air again at some o...

I really think the problem lies in the scaling? I guess my dumb a** can't figure out the scaling... Anyone else have a decent explanation on using scaling? HeightFieldActor(33, 33, imageData, 1.0f, 0.0f, 255.0f, 1, PHY_UCHAR, false, cml::vector3f(5,5,5)); HeightFieldActor(int x, int y, void* data, b...

Hi, I have been looking around the web and others as of lately are having issues with objects falling through the btHeightfieldTerrainShape collision shape... Please look here http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=4833&start=0 There are others, but I am having the same i...

Nevermind, argh....

SphereTrigger(btDiscreteDynamicsWorld* world,
const cml::vector3f& pos,
const float& radius,
const ActorId& id)

had const in the parameter list...

error C2663: 'btDiscreteDynamicsWorld::addRigidBody' : 2 overloads have no legal conversion for 'this' pointer class SphereTrigger : public Trigger { public: btSphereShape* shape; btMotionState* motionState; btRigidBody* body; SphereTrigger(const btDiscreteDynamicsWorld* world, const cml::vector3f&a...

I was using PhysX until Nividia shut out the small devs.... Anyway I don't see any actor classes in Bullet. So do I need them in Bullet?

Thanks

THanks for the reply. So when there is contact do you use a trigger or a callback? I basically just want to know I hit/ran into the object so I can get pts and remove it from the rendering loop. "I don't know about kinematic vs kinematic body collision, but my guess is that it will go straight ...

Bump

Anyone?

Hello pico, Thanks for the info, much appreciated. Helped clear up that issue. Regarding, btKinematicCharacterController class ///Interaction between btKinematicCharacterController and dynamic rigid bodies needs to be explicity implemented by the user. I have no clue on what I would need to do or wh...

BUMP???

I used PhysX before moving to bullet and they had things called actors that helped move object around. I don't see actors per se with bullet so what is the correct way to go about moving my players object around the world? I currently am using applyForce() on my ball to move it around but I don't th...