Real-Time Physics Simulation Forum

Hi,
I suppose, you should make something like this:

for body in bodies do:
body->setVelocity;
body->setTorque;
body->setImpulse;

btPhysics->stepSimulation;

for body in bodies do:
body->getVelocity;
body->getTorque;
body->getImpulse;

Hi, yes, you are right about bullet. But the point is that it's really too complicated. The collision system involves creation of bodies, their form, location, weight, velocities, the size of the world, etc. are considered when collisions are detected. All this involves sophisticated mathematics cal...

Hi,
I suppose, you want to make some kind of explosion. Anyway, I would say, that as it's impossible in nature for rigid bodies to overlap, it's not the point the bullet developers are applying their affords.

BR.

Hi,
this is explained in bullet manual in details.

BR.

Hi,
I suppose, you should try the ConvexDecompositionDemo (you can find it on this forum). What behavior do you expect the overlapping bodies to have?

BR.

Hi,
I think, it would be easier and more performance tolerant not to use bullet for such a job. Why don't you remember the coordinated of all the mines and check: for mine in mines do: if character.location = mine.location: boom!!!;

BR.

Hi, how do you actually call this method? physics=new Physics(); You should put this in physics.h #include <btBulletDynamicsCommon.h> class Physics { public: Physics(); ~Physics(); int maxProxies; btAxisSweep3* broadphase; btDefaultCollisionConfiguration* collisionConfiguration; btCollisionDispatche...

Hi,
why isn't your destructor virtual?

BR.

Hi, does the error log change when the order or libraries changes? The issue may be that QT does not link the bullet libraries properly. You may also try to link this way: LIBS += c:/bullet/lib/BulletSoftBody c:/bullet/lib/BulletDynamics c:/bullet/lib/BulletCollision c:/bullet/lib/LinearMath Please,...

Hi,
where did you get that mesh? Looks like it's been imported from some 3D program or created by points.
Have you used btCylinderShape for creating the shape?

BR.

Hi,
could you please paste the code of your wheels creation? Have you created the vehicle first?

BR.

static btQuaternion sq(btVector3(1,0,0), DEGTORAD/10); btTransform t = rbodyWoodBox.GetWorldTransform(); t.setRotation(t.getRotation() * sq); rbodyWoodBox.SetWorldTransform(t); rbodyBall.Activate(); btVector3 EulerRotation; QuaternionToEuler(t.getRotation(), EulerRotation); nodeWoodBox->setRotation(...

Hi, have you tried to use this linking options? LIBS += c:/bullet/lib/BulletSoftBody.lib c:/bullet/lib/BulletDynamics.lib c:/bullet/lib/BulletCollision.lib c:/bullet /lib/LinearMath.lib This is from the manual, try this order: Required libraries: libbulletdynamics, libbulletcollision, libbulletmath ...

Hi, I thought that <pre>gContactDestroyedCallback This is called immediately after the contact point is destroyed. typedef bool (*ContactDestroyedCallback)( void* userPersistentData);</pre> is the solition. If I'm correct, this is the function called when the collision is destroyed. Does the ball to...

Hi, what kind of vehicle simulation do you use? I hope that for btRaycastVehicle playing with this parameters is going to help you. btVehicleTuning() :m_suspensionStiffness(btScalar(5.88)), m_suspensionCompression(btScalar(0.83)), m_suspensionDamping(btScalar(0.88)), m_maxSuspensionTravelCm(btScalar...