Real-Time Physics Simulation Forum

they react to gravity and each other but setting: pRigidBody->setLinearVelocity(btVector3(_force.x, _force.y, _force.z)); , pRigidBody->applyCentralImpulse(btVector3(_force.x, _force.y, _force.z)); or pRigidBody->applyCentralForce(btVector3(_force.x, _force.y, _force.z)); does completely nothing. :o...

my clean up code: if(pRigidBody) { if(pColliderScene) { pColliderScene->getDynamicsWorld()->removeRigidBody(pRigidBody); pColliderScene = NULL; } delete pRigidBody; pRigidBody = NULL; } // delete pCollisionShape; <--- do i need to delete shape? do i need to remove the shape i use in pRigidBody->setS...

have you try not setting btCollisionObject::CF_KINEMATIC_OBJECT and treating it as a default object?
also is the callback for the position being called?

i implemented a btCollisionDispatcher class, it is basically empty with some stuff move from needsResponse to needsCollision, otherwise it is unchanged. in additional, following the example in wiki filtering example i also added: btOverlapFilterCallback * filterCallback = new YourOwnFilterCallback()...

did you 'activate' him? i am pretty much a noob myself, but what i do when i create a new character is clear the cache and activate the body. if (pDynamicsWorld->getBroadphase()->getOverlappingPairCache()) pDynamicsWorld->getBroadphase()->getOverlappingPairCache()->cleanProxyFromPairs(pRigidBody->ge...

so far bullet does physic great, but now we need to link the collision result to the logical object so the script can be trigger. currently our logical object contains 3 collision object: body(recieve damage & collision) weapon(cause damage) ghost(trigger) the result we get from bullet such as '...

just a thought, if I stick a collision shape that mirrors the camera clip planes, would that return me all the object that is within the camera space? then i can just discard the rest of the object from rendering. :lol: the only problem is bullet doesn't organise the collided object, so i have to fi...

a wall you can walk thru from one side, but not the other...
kinda like a forcefield...

just what i am looking for.
is the 'object' in the code referring to our btRigidBody object?
as getBody doesn't seem to be specify type.

say i want to make a grenade go boom when it hit a wall, it just bouncing off now like a tennis ball,
so how can i make bullet report the collision to the grenade to trigger the boom?

we could timestep the 2nd world and have only 'the ball' and the terrain in it to plot a projected path. of course if we want to simulate interaction with other moving object that might hit it, we will need to clone those stuff as well. however I think the 'path line' in most game are generated by m...

I am somewhat confused. I would like to use bullet firstly as a collision detector to activate triggers and stuff, but I am also interested in using bullet for wall, grounds, character and stuff. in the starting guide, it states that btCollisionWorld does the collision detection, while btDynamicsWor...

like you are dragging a train cart, but then you want to uncouple the cart from the rest of the train.