C++ (Cpp) CPhysicsObject::EnableDrag Examples

Example #1

File: CPhysicsObject.cpp Project: Jcw87/Gmod-vphysics

CPhysicsObject* CreatePhysicsObject(CPhysicsEnvironment *pEnvironment, const CPhysCollide *pCollisionModel, int materialIndex, const Vector &position, const QAngle& angles, objectparams_t *pParams, bool isStatic) {
	btCollisionShape* shape = (btCollisionShape*)pCollisionModel;
	
	btVector3 vector;
	btMatrix3x3 matrix;
	ConvertPosToBull(position, vector);
	ConvertRotationToBull(angles, matrix);
	btTransform transform(matrix, vector);

	PhysicsShapeInfo *shapeInfo = (PhysicsShapeInfo*)shape->getUserPointer();
	btTransform masscenter(btMatrix3x3::getIdentity());
	if (shapeInfo) masscenter.setOrigin(shapeInfo->massCenter);

	float mass = pParams->mass;
	if (isStatic) mass = 0;

	btVector3 inertia;

	shape->calculateLocalInertia(mass, inertia);
	btMotionState* motionstate = new btMassCenterMotionState(transform, masscenter);
	btRigidBody::btRigidBodyConstructionInfo info(mass,motionstate,shape,inertia);

	info.m_linearDamping = pParams->damping;
	info.m_angularDamping = pParams->rotdamping;
	//info.m_localInertia = btVector3(pParams->inertia, pParams->inertia, pParams->inertia);

	btRigidBody* body = new btRigidBody(info);

	if (mass > 0)
		pEnvironment->GetBulletEnvironment()->addRigidBody(body);
	else
		pEnvironment->GetBulletEnvironment()->addRigidBody(body, 2, ~2);

	CPhysicsObject *pObject = new CPhysicsObject();
	pObject->Init(pEnvironment, body, materialIndex, pParams->volume, pParams->dragCoefficient, pParams->dragCoefficient, pParams->massCenterOverride);
	pObject->SetGameData(pParams->pGameData);
	pObject->EnableCollisions(pParams->enableCollisions);
	if (!isStatic && pParams->dragCoefficient != 0.0f) pObject->EnableDrag(true);

	/*if (mass > 0)
	{
		btVector3 mins, maxs;
		shape->getAabb(btTransform::getIdentity(), mins, maxs);
		float maxradius = min(min(abs(maxs.getX()), abs(maxs.getY())), abs(maxs.getZ()));
		float minradius = min(min(abs(mins.getX()), abs(mins.getY())), abs(mins.getZ()));
		float radius = min(maxradius,minradius)/2.0f;
		body->setCcdMotionThreshold(radius*0.5f);
		body->setCcdSweptSphereRadius(0.2f*radius);
	}*/
	
	return pObject;
}

Example #2

File: physics_object.cpp Project: RaisingTheDerp/raisingthebar

CPhysicsObject *CreatePhysicsObject( CPhysicsEnvironment *pEnvironment, const CPhysCollide *pCollisionModel, int materialIndex, const Vector &position, const QAngle& angles, objectparams_t *pParams, bool isStatic )
{
	IVP_Template_Real_Object objectTemplate;
	IVP_U_Quat rotation;
	IVP_U_Point pos;

	ConvertRotationToIVP( angles, rotation );
	ConvertPositionToIVP( position, pos );

	InitObjectTemplate( objectTemplate, materialIndex, pParams, isStatic );

    IVP_U_Matrix massCenterMatrix;
    massCenterMatrix.init();
	if ( pParams->massCenterOverride )
	{
		IVP_U_Point center;
		ConvertPositionToIVP( *pParams->massCenterOverride, center );
		massCenterMatrix.shift_os( &center );
		objectTemplate.mass_center_override = &massCenterMatrix;
	}

	CPhysicsObject *pObject = new CPhysicsObject();
	IVP_SurfaceManager *pSurman = CreateSurfaceManager( pCollisionModel, pObject->m_collideType );

	BEGIN_IVP_ALLOCATION();

	IVP_Polygon *realObject = pEnvironment->GetIVPEnvironment()->create_polygon(pSurman, &objectTemplate, &rotation, &pos);

	pObject->Init( realObject, materialIndex, pParams->volume, pParams->dragCoefficient, pParams->dragCoefficient, pParams->massCenterOverride );
	pObject->SetGameData( pParams->pGameData );

	if ( pParams->enableCollisions )
	{
		pObject->EnableCollisions( true );
	}
	if ( !isStatic && pParams->dragCoefficient != 0.0f )
	{
		pObject->EnableDrag( true );
	}
	pObject->SetRollingDrag( pParams->rollingDrag );

	END_IVP_ALLOCATION();

	return pObject;
}