Real-Time Physics Simulation Forum

"keep a list" suggest bullet can't do this by itself correct?

basically only want the collision to do damage once to every object, what is the best way to implement this to a normal collision rigid body?

i am using dispatcher->getManifoldByIndexInternal() to get a list of collision that is taking place.
when the collision is first create, it manage to trigger the callback.
however after that first tick, it is just gone from the list...

how do i make a stationary update from every frame?

a follow up, i considered after extracting the scale to use the setLocalScaling() to modified the values. does that mean i need to remove the object and re-add it to the world to get the updated result? and what is the cost of doing it if i have to readd the object... would it make sense that since ...

we are using 4x4 matrix to store transformation data of our collision/triggers mesh. however, bullet use transform which doesn't do scaling. and basically when we pass the transformation to bullet, the scale is lost. so how to you fit a 4x4 matrix into bullet? or is there a way to extract the differ...

are we talking about the demo code or bullet itself? the demo code does do some deletion but that is precisely because bullet itself does not delete these object. however if implementing bullet on a new engine(which i am doing), we do need to clean up the instances our object are using/generated... ...

one can just keep replacing the shape with the new one each frame, but i am wondering if there is a "correct" way of approaching this problem... basically our design side wants the ability to define several collision meshes in the model tool, how to extract the data i have figure out, but ...

Unhandled exception at 0xbaadf00d in DustyTestkitPC.exe: 0xC0000005: Access violation. the funny thing is this runs fine on debug and only encounter this exception on release build.. before running the function, i usually check for pointers, the following conditions are at the start of the function...

so that is what btAlignedObjectArray is for... :o it an amusing question. i did encounter it but then i just store everything in the stack(temp array) and throw it into bullet, the rest of my engine use it own math class. i did consider re-standardizing to bullet's vector class but it heck alot of w...

so it is safe to reuse the same body as long as we readd it? understood.

i need to change the collision shape of my characters for certain state, is it safe to just setshape it? or do i have to create a new rigidbody?

oh i see... thanks, this is very helpful info!

the dynamic result i am getting has gaps between 2 collided object. this result in false negative in the next cycle. this behaviour seem different between PC and PS3, so i suspect there is some default configuration differences. so far i setup my bodies using the following code: pRigidBody->setConta...

neat code!
a million thx

taken from the 2d example demo..

do we delete btConvex2dShape?
or do we make a copy of btBoxShape, and delete btConvex2dShape AND btBoxShape?