Question regarding soft bodies

[WhiteTiger]

Hi everyone

I'm working with bullet for a couple of weeks now and am starting to use soft bodies in my simulation, or rather trying.

I'm attempting to add 1 soft body to the simulation, but when I call the stepSimulation method, my program crashes.

Here is the code I use to build the soft body:

Code: Select all

	btSoftBodyWorldInfo firstSoftBodyWorldInfo;
	
	firstSoftBodyWorldInfo.m_sparsesdf.Initialize();
	firstSoftBodyWorldInfo.m_sparsesdf.Reset();
	firstSoftBodyWorldInfo.air_density		=	(btScalar)1.2;
	firstSoftBodyWorldInfo.water_density	=	0;
	firstSoftBodyWorldInfo.water_offset		=	0;
	firstSoftBodyWorldInfo.water_normal		=	btVector3(0,0,0);
	firstSoftBodyWorldInfo.m_gravity.setValue(0,0,0);
	firstSoftBodyWorldInfo.m_broadphase = overlappingPairCache;

	btSoftBody* firstSoftBody =  btSoftBodyHelpers::CreateEllipsoid(firstSoftBodyWorldInfo,btVector3(0.0,0.0,0),
									   btVector3(0.5,0.3,0.5)*3,
									   512);

	btTransform softTransform;
	softTransform.setIdentity();
	softTransform.setOrigin(btVector3(0.0, 0.0, 0.0));
	firstSoftBody->transform(softTransform);
	firstSoftBody->addForce(btVector3(0.0,0.0,0.0));
	firstSoftBody->setTotalMass(50,true);

       currentWorld->addSoftBody(firstSoftBody);

then to run the simulation my code is:

Code: Select all

for (unsigned int i=0; i<simulationSteps; i++)
	{
		currentWorld->stepSimulation(1.f/60.f, 10);	//THIS IS WHERE THE CODE FAILS
	        ...	
       }

What exactly am I missing here?
I tried looking at the soft body demos but they weren't of any help in this regard