btGeneric6DofSpring2Constraint::btGeneric6DofSpring2Constraint(btRigidBody& rbB, const btTransform& frameInB, RotateOrder rotOrder)
: btTypedConstraint(D6_SPRING_2_CONSTRAINT_TYPE, getFixedBody(), rbB)
, m_frameInB(frameInB)
, m_rotateOrder(rotOrder)
, m_flags(0)
{
///not providing rigidbody A means implicitly using worldspace for body A
m_frameInA = rbB.getCenterOfMassTransform() * m_frameInB;
calculateTransforms();
}
btTypedConstraint::btTypedConstraint(btTypedConstraintType type, btRigidBody& rbA)
:btTypedObject(type),
m_userConstraintType(-1),
m_userConstraintId(-1),
m_needsFeedback(false),
m_rbA(rbA),
m_rbB(getFixedBody()),
m_appliedImpulse(btScalar(0.)),
m_dbgDrawSize(DEFAULT_DEBUGDRAW_SIZE)
{
}
btGeneric6DofConstraint::btGeneric6DofConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameB)
: btTypedConstraint(D6_CONSTRAINT_TYPE, getFixedBody(), rbB),
m_frameInB(frameInB),
m_useLinearReferenceFrameA(useLinearReferenceFrameB),
m_useOffsetForConstraintFrame(D6_USE_FRAME_OFFSET),
m_flags(0),
m_useSolveConstraintObsolete(false)
{
///not providing rigidbody A means implicitly using worldspace for body A
m_frameInA = rbB.getCenterOfMassTransform() * m_frameInB;
calculateTransforms();
}
btSliderConstraint::btSliderConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameA)
: btTypedConstraint(SLIDER_CONSTRAINT_TYPE, getFixedBody(), rbB),
m_useSolveConstraintObsolete(false),
m_frameInB(frameInB),
m_useLinearReferenceFrameA(useLinearReferenceFrameA)
{
///not providing rigidbody A means implicitly using worldspace for body A
m_frameInA = rbB.getCenterOfMassTransform() * m_frameInB;
// m_frameInA.getOrigin() = m_rbA.getCenterOfMassTransform()(m_frameInA.getOrigin());
initParams();
}
btTypedConstraint::btTypedConstraint(btTypedConstraintType type, btRigidBody& rbA)
:btTypedObject(type),
m_userConstraintType(-1),
m_userConstraintId(-1),
m_breakingImpulseThreshold(SIMD_INFINITY),
m_isEnabled(true),
m_needsFeedback(false),
m_rbA(rbA),
m_rbB(getFixedBody()),
m_appliedImpulse(btScalar(0.)),
m_dbgDrawSize(DEFAULT_DEBUGDRAW_SIZE)
{
}
btScalar btRaycastVehicle::rayCast(btWheelInfo& wheel)
{
updateWheelTransformsWS( wheel,false);
btScalar depth = -1;
btScalar raylen = wheel.getSuspensionRestLength()+wheel.m_wheelsRadius;
btVector3 rayvector = wheel.m_raycastInfo.m_wheelDirectionWS * (raylen);
const btVector3& source = wheel.m_raycastInfo.m_hardPointWS;
wheel.m_raycastInfo.m_contactPointWS = source + rayvector;
const btVector3& target = wheel.m_raycastInfo.m_contactPointWS;
btScalar param = btScalar(0.);
btVehicleRaycaster::btVehicleRaycasterResult rayResults;
btAssert(m_vehicleRaycaster);
void* object = m_vehicleRaycaster->castRay(source,target,rayResults);
wheel.m_raycastInfo.m_groundObject = 0;
if (object)
{
param = rayResults.m_distFraction;
depth = raylen * rayResults.m_distFraction;
wheel.m_raycastInfo.m_contactNormalWS = rayResults.m_hitNormalInWorld;
wheel.m_raycastInfo.m_isInContact = true;
wheel.m_raycastInfo.m_groundObject = &getFixedBody();///@todo for driving on dynamic/movable objects!;
//wheel.m_raycastInfo.m_groundObject = object;
btScalar hitDistance = param*raylen;
wheel.m_raycastInfo.m_suspensionLength = hitDistance - wheel.m_wheelsRadius;
//clamp on max suspension travel
btScalar minSuspensionLength = wheel.getSuspensionRestLength() - wheel.m_maxSuspensionTravelCm*btScalar(0.01);
btScalar maxSuspensionLength = wheel.getSuspensionRestLength()+ wheel.m_maxSuspensionTravelCm*btScalar(0.01);
if (wheel.m_raycastInfo.m_suspensionLength < minSuspensionLength)
{
wheel.m_raycastInfo.m_suspensionLength = minSuspensionLength;
}
if (wheel.m_raycastInfo.m_suspensionLength > maxSuspensionLength)
{
wheel.m_raycastInfo.m_suspensionLength = maxSuspensionLength;
}
wheel.m_raycastInfo.m_contactPointWS = rayResults.m_hitPointInWorld;
btScalar denominator= wheel.m_raycastInfo.m_contactNormalWS.dot( wheel.m_raycastInfo.m_wheelDirectionWS );
btVector3 chassis_velocity_at_contactPoint;
btVector3 relpos = wheel.m_raycastInfo.m_contactPointWS-getRigidBody()->getCenterOfMassPosition();
chassis_velocity_at_contactPoint = getRigidBody()->getVelocityInLocalPoint(relpos);
btScalar projVel = wheel.m_raycastInfo.m_contactNormalWS.dot( chassis_velocity_at_contactPoint );
if ( denominator >= btScalar(-0.1))
{
wheel.m_suspensionRelativeVelocity = btScalar(0.0);
wheel.m_clippedInvContactDotSuspension = btScalar(1.0) / btScalar(0.1);
}
else
{
btScalar inv = btScalar(-1.) / denominator;
wheel.m_suspensionRelativeVelocity = projVel * inv;
wheel.m_clippedInvContactDotSuspension = inv;
}
} else
{
//put wheel info as in rest position
wheel.m_raycastInfo.m_suspensionLength = wheel.getSuspensionRestLength();
wheel.m_suspensionRelativeVelocity = btScalar(0.0);
wheel.m_raycastInfo.m_contactNormalWS = - wheel.m_raycastInfo.m_wheelDirectionWS;
wheel.m_clippedInvContactDotSuspension = btScalar(1.0);
}
return depth;
}
bool btBulletWorldImporter::convertAllObjects( bParse::btBulletFile* bulletFile2)
{
int i;
for (i=0;i<bulletFile2->m_bvhs.size();i++)
{
btOptimizedBvh* bvh = createOptimizedBvh();
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btQuantizedBvhDoubleData* bvhData = (btQuantizedBvhDoubleData*)bulletFile2->m_bvhs[i];
bvh->deSerializeDouble(*bvhData);
} else
{
btQuantizedBvhFloatData* bvhData = (btQuantizedBvhFloatData*)bulletFile2->m_bvhs[i];
bvh->deSerializeFloat(*bvhData);
}
m_bvhMap.insert(bulletFile2->m_bvhs[i],bvh);
}
btHashMap<btHashPtr,btCollisionShape*> shapeMap;
for (i=0;i<bulletFile2->m_collisionShapes.size();i++)
{
btCollisionShapeData* shapeData = (btCollisionShapeData*)bulletFile2->m_collisionShapes[i];
btCollisionShape* shape = convertCollisionShape(shapeData);
if (shape)
{
// printf("shapeMap.insert(%x,%x)\n",shapeData,shape);
shapeMap.insert(shapeData,shape);
}
if (shape&& shapeData->m_name)
{
char* newname = duplicateName(shapeData->m_name);
m_objectNameMap.insert(shape,newname);
m_nameShapeMap.insert(newname,shape);
}
}
btHashMap<btHashPtr,btCollisionObject*> bodyMap;
for (i=0;i<bulletFile2->m_rigidBodies.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btRigidBodyDoubleData* colObjData = (btRigidBodyDoubleData*)bulletFile2->m_rigidBodies[i];
btScalar mass = btScalar(colObjData->m_inverseMass? 1.f/colObjData->m_inverseMass : 0.f);
btVector3 localInertia;
localInertia.setZero();
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionObjectData.m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeDouble(colObjData->m_collisionObjectData.m_worldTransform);
// startTransform.setBasis(btMatrix3x3::getIdentity());
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
if (shape->isNonMoving())
{
mass = 0.f;
}
if (mass)
{
shape->calculateLocalInertia(mass,localInertia);
}
bool isDynamic = mass!=0.f;
btRigidBody* body = createRigidBody(isDynamic,mass,startTransform,shape,colObjData->m_collisionObjectData.m_name);
#ifdef USE_INTERNAL_EDGE_UTILITY
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
btBvhTriangleMeshShape* trimesh = (btBvhTriangleMeshShape*)shape;
if (trimesh->getTriangleInfoMap())
{
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
}
}
#endif //USE_INTERNAL_EDGE_UTILITY
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
} else
{
btRigidBodyFloatData* colObjData = (btRigidBodyFloatData*)bulletFile2->m_rigidBodies[i];
btScalar mass = btScalar(colObjData->m_inverseMass? 1.f/colObjData->m_inverseMass : 0.f);
btVector3 localInertia;
localInertia.setZero();
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionObjectData.m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeFloat(colObjData->m_collisionObjectData.m_worldTransform);
// startTransform.setBasis(btMatrix3x3::getIdentity());
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
if (shape->isNonMoving())
{
mass = 0.f;
}
if (mass)
{
shape->calculateLocalInertia(mass,localInertia);
}
bool isDynamic = mass!=0.f;
btRigidBody* body = createRigidBody(isDynamic,mass,startTransform,shape,colObjData->m_collisionObjectData.m_name);
#ifdef USE_INTERNAL_EDGE_UTILITY
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
btBvhTriangleMeshShape* trimesh = (btBvhTriangleMeshShape*)shape;
if (trimesh->getTriangleInfoMap())
{
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
}
}
#endif //USE_INTERNAL_EDGE_UTILITY
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
}
}
for (i=0;i<bulletFile2->m_collisionObjects.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btCollisionObjectDoubleData* colObjData = (btCollisionObjectDoubleData*)bulletFile2->m_collisionObjects[i];
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeDouble(colObjData->m_worldTransform);
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
btCollisionObject* body = createCollisionObject(startTransform,shape,colObjData->m_name);
#ifdef USE_INTERNAL_EDGE_UTILITY
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
btBvhTriangleMeshShape* trimesh = (btBvhTriangleMeshShape*)shape;
if (trimesh->getTriangleInfoMap())
{
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
}
}
#endif //USE_INTERNAL_EDGE_UTILITY
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
} else
{
btCollisionObjectFloatData* colObjData = (btCollisionObjectFloatData*)bulletFile2->m_collisionObjects[i];
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeFloat(colObjData->m_worldTransform);
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
btCollisionObject* body = createCollisionObject(startTransform,shape,colObjData->m_name);
#ifdef USE_INTERNAL_EDGE_UTILITY
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
btBvhTriangleMeshShape* trimesh = (btBvhTriangleMeshShape*)shape;
if (trimesh->getTriangleInfoMap())
{
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
}
}
#endif //USE_INTERNAL_EDGE_UTILITY
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
}
printf("bla");
}
for (i=0;i<bulletFile2->m_constraints.size();i++)
{
btTypedConstraintData* constraintData = (btTypedConstraintData*)bulletFile2->m_constraints[i];
btCollisionObject** colAptr = bodyMap.find(constraintData->m_rbA);
btCollisionObject** colBptr = bodyMap.find(constraintData->m_rbB);
btRigidBody* rbA = 0;
btRigidBody* rbB = 0;
if (colAptr)
{
rbA = btRigidBody::upcast(*colAptr);
if (!rbA)
rbA = &getFixedBody();
}
if (colBptr)
{
rbB = btRigidBody::upcast(*colBptr);
if (!rbB)
rbB = &getFixedBody();
}
btTypedConstraint* constraint = 0;
switch (constraintData->m_objectType)
{
case POINT2POINT_CONSTRAINT_TYPE:
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btPoint2PointConstraintDoubleData* p2pData = (btPoint2PointConstraintDoubleData*)constraintData;
if (rbA && rbB)
{
btVector3 pivotInA,pivotInB;
pivotInA.deSerializeDouble(p2pData->m_pivotInA);
pivotInB.deSerializeDouble(p2pData->m_pivotInB);
constraint = createPoint2PointConstraint(*rbA,*rbB,pivotInA,pivotInB);
} else
{
btVector3 pivotInA;
pivotInA.deSerializeDouble(p2pData->m_pivotInA);
constraint = createPoint2PointConstraint(*rbA,pivotInA);
}
} else
{
btPoint2PointConstraintFloatData* p2pData = (btPoint2PointConstraintFloatData*)constraintData;
if (rbA&& rbB)
{
btVector3 pivotInA,pivotInB;
pivotInA.deSerializeFloat(p2pData->m_pivotInA);
pivotInB.deSerializeFloat(p2pData->m_pivotInB);
constraint = createPoint2PointConstraint(*rbA,*rbB,pivotInA,pivotInB);
} else
{
btVector3 pivotInA;
pivotInA.deSerializeFloat(p2pData->m_pivotInA);
constraint = createPoint2PointConstraint(*rbA,pivotInA);
}
}
break;
}
case HINGE_CONSTRAINT_TYPE:
{
btHingeConstraint* hinge = 0;
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btHingeConstraintDoubleData* hingeData = (btHingeConstraintDoubleData*)constraintData;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeDouble(hingeData->m_rbAFrame);
rbBFrame.deSerializeDouble(hingeData->m_rbBFrame);
hinge = createHingeConstraint(*rbA,*rbB,rbAFrame,rbBFrame,hingeData->m_useReferenceFrameA!=0);
} else
{
btTransform rbAFrame;
rbAFrame.deSerializeDouble(hingeData->m_rbAFrame);
hinge = createHingeConstraint(*rbA,rbAFrame,hingeData->m_useReferenceFrameA!=0);
}
if (hingeData->m_enableAngularMotor)
{
hinge->enableAngularMotor(true,hingeData->m_motorTargetVelocity,hingeData->m_maxMotorImpulse);
}
hinge->setAngularOnly(hingeData->m_angularOnly!=0);
hinge->setLimit(btScalar(hingeData->m_lowerLimit),btScalar(hingeData->m_upperLimit),btScalar(hingeData->m_limitSoftness),btScalar(hingeData->m_biasFactor),btScalar(hingeData->m_relaxationFactor));
} else
{
btHingeConstraintFloatData* hingeData = (btHingeConstraintFloatData*)constraintData;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(hingeData->m_rbAFrame);
rbBFrame.deSerializeFloat(hingeData->m_rbBFrame);
hinge = createHingeConstraint(*rbA,*rbB,rbAFrame,rbBFrame,hingeData->m_useReferenceFrameA!=0);
} else
{
btTransform rbAFrame;
rbAFrame.deSerializeFloat(hingeData->m_rbAFrame);
hinge = createHingeConstraint(*rbA,rbAFrame,hingeData->m_useReferenceFrameA!=0);
}
if (hingeData->m_enableAngularMotor)
{
hinge->enableAngularMotor(true,hingeData->m_motorTargetVelocity,hingeData->m_maxMotorImpulse);
}
hinge->setAngularOnly(hingeData->m_angularOnly!=0);
hinge->setLimit(btScalar(hingeData->m_lowerLimit),btScalar(hingeData->m_upperLimit),btScalar(hingeData->m_limitSoftness),btScalar(hingeData->m_biasFactor),btScalar(hingeData->m_relaxationFactor));
}
constraint = hinge;
break;
}
case CONETWIST_CONSTRAINT_TYPE:
{
btConeTwistConstraintData* coneData = (btConeTwistConstraintData*)constraintData;
btConeTwistConstraint* coneTwist = 0;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(coneData->m_rbAFrame);
rbBFrame.deSerializeFloat(coneData->m_rbBFrame);
coneTwist = createConeTwistConstraint(*rbA,*rbB,rbAFrame,rbBFrame);
} else
{
btTransform rbAFrame;
rbAFrame.deSerializeFloat(coneData->m_rbAFrame);
coneTwist = createConeTwistConstraint(*rbA,rbAFrame);
}
coneTwist->setLimit(coneData->m_swingSpan1,coneData->m_swingSpan2,coneData->m_twistSpan,coneData->m_limitSoftness,coneData->m_biasFactor,coneData->m_relaxationFactor);
coneTwist->setDamping(coneData->m_damping);
constraint = coneTwist;
break;
}
case D6_CONSTRAINT_TYPE:
{
btGeneric6DofConstraintData* dofData = (btGeneric6DofConstraintData*)constraintData;
btGeneric6DofConstraint* dof = 0;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(dofData->m_rbAFrame);
rbBFrame.deSerializeFloat(dofData->m_rbBFrame);
dof = createGeneric6DofConstraint(*rbA,*rbB,rbAFrame,rbBFrame,dofData->m_useLinearReferenceFrameA!=0);
} else
{
if (rbB)
{
btTransform rbBFrame;
rbBFrame.deSerializeFloat(dofData->m_rbBFrame);
dof = createGeneric6DofConstraint(*rbB,rbBFrame,dofData->m_useLinearReferenceFrameA!=0);
} else
{
printf("Error in btWorldImporter::createGeneric6DofConstraint: missing rbB\n");
}
}
if (dof)
{
btVector3 angLowerLimit,angUpperLimit, linLowerLimit,linUpperlimit;
angLowerLimit.deSerializeFloat(dofData->m_angularLowerLimit);
angUpperLimit.deSerializeFloat(dofData->m_angularUpperLimit);
linLowerLimit.deSerializeFloat(dofData->m_linearLowerLimit);
linUpperlimit.deSerializeFloat(dofData->m_linearUpperLimit);
dof->setAngularLowerLimit(angLowerLimit);
dof->setAngularUpperLimit(angUpperLimit);
dof->setLinearLowerLimit(linLowerLimit);
dof->setLinearUpperLimit(linUpperlimit);
}
constraint = dof;
break;
}
case SLIDER_CONSTRAINT_TYPE:
{
btSliderConstraintData* sliderData = (btSliderConstraintData*)constraintData;
btSliderConstraint* slider = 0;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(sliderData->m_rbAFrame);
rbBFrame.deSerializeFloat(sliderData->m_rbBFrame);
slider = createSliderConstraint(*rbA,*rbB,rbAFrame,rbBFrame,sliderData->m_useLinearReferenceFrameA!=0);
} else
{
btTransform rbBFrame;
rbBFrame.deSerializeFloat(sliderData->m_rbBFrame);
slider = createSliderConstraint(*rbB,rbBFrame,sliderData->m_useLinearReferenceFrameA!=0);
}
slider->setLowerLinLimit(sliderData->m_linearLowerLimit);
slider->setUpperLinLimit(sliderData->m_linearUpperLimit);
slider->setLowerAngLimit(sliderData->m_angularLowerLimit);
slider->setUpperAngLimit(sliderData->m_angularUpperLimit);
slider->setUseFrameOffset(sliderData->m_useOffsetForConstraintFrame!=0);
constraint = slider;
break;
}
default:
{
printf("unknown constraint type\n");
}
};
if (constraint)
{
constraint->setDbgDrawSize(constraintData->m_dbgDrawSize);
if (constraintData->m_name)
{
char* newname = duplicateName(constraintData->m_name);
m_nameConstraintMap.insert(newname,constraint);
m_objectNameMap.insert(constraint,newname);
}
if(m_dynamicsWorld)
m_dynamicsWorld->addConstraint(constraint,constraintData->m_disableCollisionsBetweenLinkedBodies!=0);
}
}
return true;
}
btTypedConstraint* gkDynamicsWorld::createConstraint(btRigidBody* rbA, btRigidBody*rbB, const gkPhysicsConstraintProperties& props)
{
btVector3 pivotInA(gkMathUtils::get(props.m_pivot));
btVector3 pivotInB(0,0,0);
pivotInB = rbB ? rbB->getCenterOfMassTransform().inverse()(rbA->getCenterOfMassTransform()(pivotInA)) :
rbA->getCenterOfMassTransform() * pivotInA;
//localConstraintFrameBasis
btMatrix3x3 localCFrame;
localCFrame.setEulerZYX(props.m_axis.x, props.m_axis.y, props.m_axis.z);
btVector3 axisInA = localCFrame.getColumn(0);
btVector3 axis1 = localCFrame.getColumn(1);
btVector3 axis2 = localCFrame.getColumn(2);
bool angularOnly = false;
btTypedConstraint* constraint = 0;
if (props.m_type == GK_BALL_CONSTRAINT)
{
btPoint2PointConstraint* p2p = 0;
if (rbB)
p2p = new btPoint2PointConstraint(*rbA,*rbB,pivotInA,pivotInB);
else
p2p = new btPoint2PointConstraint(*rbA,pivotInA);
constraint = p2p;
}
else if (props.m_type == GK_HINGE_CONSTRAINT)
{
btHingeConstraint* hinge = 0;
if (rbB)
{
btVector3 axisInB = rbB->getCenterOfMassTransform().getBasis().inverse() * (rbA->getCenterOfMassTransform().getBasis() * axisInA);
hinge = new btHingeConstraint(*rbA, *rbB, pivotInA, pivotInB, axisInA, axisInB);
}
else
{
hinge = new btHingeConstraint(*rbA, pivotInA, axisInA);
}
hinge->setAngularOnly(angularOnly);
constraint = hinge;
}
else if (props.m_type == GK_D6_CONSTRAINT)
{
btTransform frameInA;
btTransform frameInB;
if (axis1.length() == 0.0)
{
btPlaneSpace1(axisInA, axis1, axis2);
}
frameInA.getBasis().setValue(axisInA.x(), axis1.x(), axis2.x(),
axisInA.y(), axis1.y(), axis2.y(),
axisInA.z(), axis1.z(), axis2.z());
frameInA.setOrigin( pivotInA );
btTransform inv = rbB ? rbB->getCenterOfMassTransform().inverse() : btTransform::getIdentity();
btTransform globalFrameA = rbA->getCenterOfMassTransform() * frameInA;
frameInB = inv * globalFrameA;
bool useReferenceFrameA = true;
if (!rbB)
rbB = getFixedBody();
btGeneric6DofSpringConstraint* genericConstraint = new btGeneric6DofSpringConstraint(*rbA, *rbB, frameInA, frameInB, useReferenceFrameA);
//if it is a generic 6DOF constraint, set all the limits accordingly
int dof, dofbit=1;
for (dof=0;dof<6;dof++)
{
if (props.m_flag & dofbit)
{
///this access is a bloated, will probably make special cases for common arrays
btScalar minLimit = props.m_minLimit[dof];
btScalar maxLimit = props.m_maxLimit[dof];
genericConstraint->setLimit(dof, minLimit, maxLimit);
}
else
{
//minLimit > maxLimit means free(disabled limit) for this degree of freedom
genericConstraint->setLimit(dof, 1, -1);
}
dofbit<<=1;
}
constraint = genericConstraint;
}
else if (props.m_type == GK_CONETWIST_CONSTRAINT)
{
//TODO: implement conetwist constraint
}
return constraint;
}
bool Wheel::update(btScalar dt, WheelContact & contact)
{
if (!updateContact(2 * radius))
return false;
const Surface * surface = ray.getSurface();
if (!surface)
return false;
contact.frictionCoeff = tire.getTread() * surface->frictionTread +
(1.0 - tire.getTread()) * surface->frictionNonTread;
btRigidBody * bodyA = body;
btRigidBody * bodyB = &getFixedBody();
if (btRigidBody::upcast(ray.m_collisionObject))
{
bodyB = btRigidBody::upcast(ray.m_collisionObject);
}
btVector3 wheelTangent1 = transform.getBasis().getColumn(1); // forward
btVector3 wheelTangent2 = transform.getBasis().getColumn(0); // right
btVector3 wheelNormal = transform.getBasis().getColumn(2); // up
btVector3 contactNormal = ray.getNormal();
btVector3 contactPointA = ray.getPoint();
btVector3 contactPointB = ray.getPoint();
btScalar stiffnessConstant = suspension.getStiffness();
btScalar dampingConstant = suspension.getDamping();
btScalar displacement = suspension.getDisplacement();
// update constraints
btVector3 rA = contactPointA - bodyA->getCenterOfMassPosition();
btVector3 rB = contactPointB - bodyB->getCenterOfMassPosition();
btVector3 contactTangent1 = wheelTangent1 - contactNormal * contactNormal.dot(wheelTangent1);
btVector3 contactTangent2 = wheelTangent2 - contactNormal * contactNormal.dot(wheelTangent2);
contactTangent1.normalize();
contactTangent2.normalize();
// project wheel normal onto contact forward facing plane to calculate camber
btVector3 projNormal = wheelNormal - wheelNormal.dot(contactTangent1) * contactTangent1;
projNormal.normalize();
contact.camber = 0;//btAcos(projNormal.dot(contactNormal)) * SIMD_DEGS_PER_RAD; fixme
contact.vR = shaft.getAngularVelocity() * radius;
contact.bodyA = bodyA;
contact.bodyB = bodyB;
contact.rA = rA;
contact.rB = rB;
btVector3 vA = bodyA->getLinearVelocity() + bodyA->getAngularVelocity().cross(rA);
btVector3 vB = bodyB->getLinearVelocity() + bodyB->getAngularVelocity().cross(rB);
btVector3 vAB = vA - vB;
// set suspension constraint
{
// CFM and ERP from spring stiffness and damping constants
btScalar softness = 1.0f / (dt * (dt * stiffnessConstant + dampingConstant));
btScalar biasFactor = stiffnessConstant / (dt * stiffnessConstant + dampingConstant);
btScalar velocityError = -biasFactor * displacement;
btVector3 normal = contactNormal;
btScalar denomA = bodyA->computeImpulseDenominator(contactPointA, normal);
btScalar denomB = bodyB->computeImpulseDenominator(contactPointB, normal);
btScalar jacDiagInv = 1 / (denomA + denomB + softness);
contact.response.jacDiagInv = jacDiagInv;
contact.response.rhs = -velocityError * jacDiagInv;
contact.response.cfm = -softness * jacDiagInv;
contact.response.lowerLimit = 0;
contact.response.upperLimit = SIMD_INFINITY;
contact.response.accumImpulse = 0;
contact.response.normal = normal;
contact.response.angularCompA = bodyA->getInvInertiaTensorWorld() * rA.cross(normal);
contact.response.angularCompB = bodyB->getInvInertiaTensorWorld() * rB.cross(normal);
}
// set longitudinal friction constraint
{
btVector3 normal = contactTangent1;
btScalar denomA = bodyA->computeImpulseDenominator(contactPointA, normal);
btScalar denomB = bodyB->computeImpulseDenominator(contactPointB, normal);
btScalar jacDiagInv = 1 / (denomA + denomB);
btScalar velocityError = vAB.dot(normal) - contact.vR;
contact.v1 = velocityError + contact.vR;
contact.friction1.jacDiagInv = jacDiagInv;
contact.friction1.rhs = -velocityError * jacDiagInv;
contact.friction1.cfm = 0;
contact.friction1.lowerLimit = 0;
contact.friction1.upperLimit = 0;
contact.friction1.accumImpulse = 0;
contact.friction1.normal = normal;
contact.friction1.angularCompA = bodyA->getInvInertiaTensorWorld() * rA.cross(normal);
contact.friction1.angularCompB = bodyB->getInvInertiaTensorWorld() * rB.cross(normal);
}
// set lateral friction constraint
{
btVector3 normal = contactTangent2;
btScalar denomA = bodyA->computeImpulseDenominator(contactPointA, normal);
btScalar denomB = bodyB->computeImpulseDenominator(contactPointB, normal);
btScalar jacDiagInv = 1 / (denomA + denomB);
btScalar velocityError = vAB.dot(normal);
contact.v2 = velocityError;
contact.friction2.jacDiagInv = jacDiagInv;
contact.friction2.rhs = -velocityError * jacDiagInv;
contact.friction2.cfm = 0;
contact.friction2.lowerLimit = 0;
contact.friction2.upperLimit = 0;
contact.friction2.accumImpulse = 0;
contact.friction2.normal = normal;
contact.friction2.angularCompA = bodyA->getInvInertiaTensorWorld() * rA.cross(normal);
contact.friction2.angularCompB = bodyB->getInvInertiaTensorWorld() * rB.cross(normal);
}
/*
// ABS
abs_active = false;
btScalar brake_torque = brake.getTorque();
btScalar slide = tire.getSlide();
btScalar ideal_slide = tire.getIdealSlide();
if (abs_enabled && brake_torque > 1E-3 && angvel > 1 && slide < -ideal_slide)
{
// predict new angvel
btScalar angvel_delta = shaft.getAngularVelocity() - angvel;
btScalar angvel_new = shaft.getAngularVelocity() + angvel_delta;
// calculate brake torque correction to reach 95% ideal_slide
btScalar angvel_target = (0.95 * ideal_slide + 1) * contact.v1 / radius;
angvel_delta = angvel_new - angvel_target;
if (angvel_delta < 0)
{
// set brake torque to reach angvel_target
brake_torque += angvel_delta / dt * shaft.getInertia();
btScalar factor = brake_torque / brake.getMaxTorque();
btClamp(factor, btScalar(0), btScalar(1));
brake.setBrakeFactor(factor);
abs_active = true;
}
}
// TCS
tcs_active = false;
if (tcs_enabled && slide > ideal_slide)
{
// predict new angvel
btScalar angvel_delta = shaft.getAngularVelocity() - angvel;
btScalar angvel_new = shaft.getAngularVelocity() + angvel_delta;
// calculate brake torque correction to reach 95% ideal_slide
btScalar angvel_target = (0.95 * ideal_slide + 1) * contact.v1 / radius;
angvel_delta = angvel_new - angvel_target;
if (angvel_delta > 0)
{
// set brake torque to reach angvel_target
btScalar brake_torque = angvel_delta / dt * shaft.getInertia();
btScalar factor = brake_torque / brake.getMaxTorque();
btClamp(factor, brake.getBrakeFactor(), btScalar(1));
brake.setBrakeFactor(factor);
tcs_active = true;
}
}
// store old angular velocity
angvel = shaft.getAngularVelocity();
*/
return true;
}
bool btBulletWorldImporter::convertAllObjects( bParse::btBulletFile* bulletFile2)
{
m_shapeMap.clear();
m_bodyMap.clear();
int i;
for (i=0;i<bulletFile2->m_bvhs.size();i++)
{
btOptimizedBvh* bvh = createOptimizedBvh();
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btQuantizedBvhDoubleData* bvhData = (btQuantizedBvhDoubleData*)bulletFile2->m_bvhs[i];
bvh->deSerializeDouble(*bvhData);
} else
{
btQuantizedBvhFloatData* bvhData = (btQuantizedBvhFloatData*)bulletFile2->m_bvhs[i];
bvh->deSerializeFloat(*bvhData);
}
m_bvhMap.insert(bulletFile2->m_bvhs[i],bvh);
}
for (i=0;i<bulletFile2->m_collisionShapes.size();i++)
{
btCollisionShapeData* shapeData = (btCollisionShapeData*)bulletFile2->m_collisionShapes[i];
btCollisionShape* shape = convertCollisionShape(shapeData);
if (shape)
{
// printf("shapeMap.insert(%x,%x)\n",shapeData,shape);
m_shapeMap.insert(shapeData,shape);
}
if (shape&& shapeData->m_name)
{
char* newname = duplicateName(shapeData->m_name);
m_objectNameMap.insert(shape,newname);
m_nameShapeMap.insert(newname,shape);
}
}
for (int i=0;i<bulletFile2->m_dynamicsWorldInfo.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btDynamicsWorldDoubleData* solverInfoData = (btDynamicsWorldDoubleData*)bulletFile2->m_dynamicsWorldInfo[i];
btContactSolverInfo solverInfo;
btVector3 gravity;
gravity.deSerializeDouble(solverInfoData->m_gravity);
solverInfo.m_tau = btScalar(solverInfoData->m_solverInfo.m_tau);
solverInfo.m_damping = btScalar(solverInfoData->m_solverInfo.m_damping);
solverInfo.m_friction = btScalar(solverInfoData->m_solverInfo.m_friction);
solverInfo.m_timeStep = btScalar(solverInfoData->m_solverInfo.m_timeStep);
solverInfo.m_restitution = btScalar(solverInfoData->m_solverInfo.m_restitution);
solverInfo.m_maxErrorReduction = btScalar(solverInfoData->m_solverInfo.m_maxErrorReduction);
solverInfo.m_sor = btScalar(solverInfoData->m_solverInfo.m_sor);
solverInfo.m_erp = btScalar(solverInfoData->m_solverInfo.m_erp);
solverInfo.m_erp2 = btScalar(solverInfoData->m_solverInfo.m_erp2);
solverInfo.m_globalCfm = btScalar(solverInfoData->m_solverInfo.m_globalCfm);
solverInfo.m_splitImpulsePenetrationThreshold = btScalar(solverInfoData->m_solverInfo.m_splitImpulsePenetrationThreshold);
solverInfo.m_splitImpulseTurnErp = btScalar(solverInfoData->m_solverInfo.m_splitImpulseTurnErp);
solverInfo.m_linearSlop = btScalar(solverInfoData->m_solverInfo.m_linearSlop);
solverInfo.m_warmstartingFactor = btScalar(solverInfoData->m_solverInfo.m_warmstartingFactor);
solverInfo.m_maxGyroscopicForce = btScalar(solverInfoData->m_solverInfo.m_maxGyroscopicForce);
solverInfo.m_singleAxisRollingFrictionThreshold = btScalar(solverInfoData->m_solverInfo.m_singleAxisRollingFrictionThreshold);
solverInfo.m_numIterations = solverInfoData->m_solverInfo.m_numIterations;
solverInfo.m_solverMode = solverInfoData->m_solverInfo.m_solverMode;
solverInfo.m_restingContactRestitutionThreshold = solverInfoData->m_solverInfo.m_restingContactRestitutionThreshold;
solverInfo.m_minimumSolverBatchSize = solverInfoData->m_solverInfo.m_minimumSolverBatchSize;
solverInfo.m_splitImpulse = solverInfoData->m_solverInfo.m_splitImpulse;
setDynamicsWorldInfo(gravity,solverInfo);
} else
{
btDynamicsWorldFloatData* solverInfoData = (btDynamicsWorldFloatData*)bulletFile2->m_dynamicsWorldInfo[i];
btContactSolverInfo solverInfo;
btVector3 gravity;
gravity.deSerializeFloat(solverInfoData->m_gravity);
solverInfo.m_tau = solverInfoData->m_solverInfo.m_tau;
solverInfo.m_damping = solverInfoData->m_solverInfo.m_damping;
solverInfo.m_friction = solverInfoData->m_solverInfo.m_friction;
solverInfo.m_timeStep = solverInfoData->m_solverInfo.m_timeStep;
solverInfo.m_restitution = solverInfoData->m_solverInfo.m_restitution;
solverInfo.m_maxErrorReduction = solverInfoData->m_solverInfo.m_maxErrorReduction;
solverInfo.m_sor = solverInfoData->m_solverInfo.m_sor;
solverInfo.m_erp = solverInfoData->m_solverInfo.m_erp;
solverInfo.m_erp2 = solverInfoData->m_solverInfo.m_erp2;
solverInfo.m_globalCfm = solverInfoData->m_solverInfo.m_globalCfm;
solverInfo.m_splitImpulsePenetrationThreshold = solverInfoData->m_solverInfo.m_splitImpulsePenetrationThreshold;
solverInfo.m_splitImpulseTurnErp = solverInfoData->m_solverInfo.m_splitImpulseTurnErp;
solverInfo.m_linearSlop = solverInfoData->m_solverInfo.m_linearSlop;
solverInfo.m_warmstartingFactor = solverInfoData->m_solverInfo.m_warmstartingFactor;
solverInfo.m_maxGyroscopicForce = solverInfoData->m_solverInfo.m_maxGyroscopicForce;
solverInfo.m_singleAxisRollingFrictionThreshold = solverInfoData->m_solverInfo.m_singleAxisRollingFrictionThreshold;
solverInfo.m_numIterations = solverInfoData->m_solverInfo.m_numIterations;
solverInfo.m_solverMode = solverInfoData->m_solverInfo.m_solverMode;
solverInfo.m_restingContactRestitutionThreshold = solverInfoData->m_solverInfo.m_restingContactRestitutionThreshold;
solverInfo.m_minimumSolverBatchSize = solverInfoData->m_solverInfo.m_minimumSolverBatchSize;
solverInfo.m_splitImpulse = solverInfoData->m_solverInfo.m_splitImpulse;
setDynamicsWorldInfo(gravity,solverInfo);
}
}
for (i=0;i<bulletFile2->m_rigidBodies.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btRigidBodyDoubleData* colObjData = (btRigidBodyDoubleData*)bulletFile2->m_rigidBodies[i];
convertRigidBodyDouble(colObjData);
} else
{
btRigidBodyFloatData* colObjData = (btRigidBodyFloatData*)bulletFile2->m_rigidBodies[i];
convertRigidBodyFloat(colObjData);
}
}
for (i=0;i<bulletFile2->m_collisionObjects.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btCollisionObjectDoubleData* colObjData = (btCollisionObjectDoubleData*)bulletFile2->m_collisionObjects[i];
btCollisionShape** shapePtr = m_shapeMap.find(colObjData->m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
colObjData->m_worldTransform.m_origin.m_floats[3] = 0.f;
startTransform.deSerializeDouble(colObjData->m_worldTransform);
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
btCollisionObject* body = createCollisionObject(startTransform,shape,colObjData->m_name);
body->setFriction(btScalar(colObjData->m_friction));
body->setRestitution(btScalar(colObjData->m_restitution));
#ifdef USE_INTERNAL_EDGE_UTILITY
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
btBvhTriangleMeshShape* trimesh = (btBvhTriangleMeshShape*)shape;
if (trimesh->getTriangleInfoMap())
{
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
}
}
#endif //USE_INTERNAL_EDGE_UTILITY
m_bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
} else
{
btCollisionObjectFloatData* colObjData = (btCollisionObjectFloatData*)bulletFile2->m_collisionObjects[i];
btCollisionShape** shapePtr = m_shapeMap.find(colObjData->m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
colObjData->m_worldTransform.m_origin.m_floats[3] = 0.f;
startTransform.deSerializeFloat(colObjData->m_worldTransform);
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
btCollisionObject* body = createCollisionObject(startTransform,shape,colObjData->m_name);
#ifdef USE_INTERNAL_EDGE_UTILITY
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
btBvhTriangleMeshShape* trimesh = (btBvhTriangleMeshShape*)shape;
if (trimesh->getTriangleInfoMap())
{
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
}
}
#endif //USE_INTERNAL_EDGE_UTILITY
m_bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
}
}
for (i=0;i<bulletFile2->m_constraints.size();i++)
{
btTypedConstraintData2* constraintData = (btTypedConstraintData2*)bulletFile2->m_constraints[i];
btTypedConstraintFloatData* singleC = (btTypedConstraintFloatData*)bulletFile2->m_constraints[i];
btTypedConstraintDoubleData* doubleC = (btTypedConstraintDoubleData*)bulletFile2->m_constraints[i];
btCollisionObject** colAptr = m_bodyMap.find(constraintData->m_rbA);
btCollisionObject** colBptr = m_bodyMap.find(constraintData->m_rbB);
btRigidBody* rbA = 0;
btRigidBody* rbB = 0;
if (colAptr)
{
rbA = btRigidBody::upcast(*colAptr);
if (!rbA)
rbA = &getFixedBody();
}
if (colBptr)
{
rbB = btRigidBody::upcast(*colBptr);
if (!rbB)
rbB = &getFixedBody();
}
if (!rbA && !rbB)
continue;
bool isDoublePrecisionData = (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)!=0;
if (isDoublePrecisionData)
{
if (bulletFile2->getVersion()>=282)
{
btTypedConstraintDoubleData* dc = (btTypedConstraintDoubleData*)constraintData;
convertConstraintDouble(dc, rbA,rbB, bulletFile2->getVersion());
} else
{
//double-precision constraints were messed up until 2.82, try to recover data...
btTypedConstraintData* oldData = (btTypedConstraintData*)constraintData;
convertConstraintBackwardsCompatible281(oldData, rbA,rbB, bulletFile2->getVersion());
}
}
else
{
btTypedConstraintFloatData* dc = (btTypedConstraintFloatData*)constraintData;
convertConstraintFloat(dc, rbA,rbB, bulletFile2->getVersion());
}
}
return true;
}
btScalar btKart::rayCast(unsigned int index)
{
btWheelInfo &wheel = m_wheelInfo[index];
// Work around a bullet problem: when using a convex hull the raycast
// would sometimes hit the chassis (which does not happen when using a
// box shape). Therefore set the collision mask in the chassis body so
// that it is not hit anymore.
short int old_group=0;
if(m_chassisBody->getBroadphaseHandle())
{
old_group = m_chassisBody->getBroadphaseHandle()
->m_collisionFilterGroup;
m_chassisBody->getBroadphaseHandle()->m_collisionFilterGroup = 0;
}
updateWheelTransformsWS( wheel,false);
btScalar max_susp_len = wheel.getSuspensionRestLength()
+ wheel.m_maxSuspensionTravel;
// Do a slightly longer raycast to see if the kart might soon hit the
// ground and some 'cushioning' is needed to avoid that the chassis
// hits the ground.
btScalar raylen = max_susp_len + 0.5f;
btVector3 rayvector = wheel.m_raycastInfo.m_wheelDirectionWS * (raylen);
const btVector3& source = wheel.m_raycastInfo.m_hardPointWS;
wheel.m_raycastInfo.m_contactPointWS = source + rayvector;
const btVector3& target = wheel.m_raycastInfo.m_contactPointWS;
btVehicleRaycaster::btVehicleRaycasterResult rayResults;
btAssert(m_vehicleRaycaster);
void* object = m_vehicleRaycaster->castRay(source,target,rayResults);
wheel.m_raycastInfo.m_groundObject = 0;
btScalar depth = raylen * rayResults.m_distFraction;
if (object && depth < max_susp_len)
{
wheel.m_raycastInfo.m_contactNormalWS = rayResults.m_hitNormalInWorld;
wheel.m_raycastInfo.m_contactNormalWS.normalize();
wheel.m_raycastInfo.m_isInContact = true;
///@todo for driving on dynamic/movable objects!;
wheel.m_raycastInfo.m_triangle_index = rayResults.m_triangle_index;;
wheel.m_raycastInfo.m_groundObject = &getFixedBody();
wheel.m_raycastInfo.m_suspensionLength = depth;
//clamp on max suspension travel
btScalar minSuspensionLength = wheel.getSuspensionRestLength()
- wheel.m_maxSuspensionTravel;
btScalar maxSuspensionLength = wheel.getSuspensionRestLength()
+ wheel.m_maxSuspensionTravel;
if (wheel.m_raycastInfo.m_suspensionLength < minSuspensionLength)
{
wheel.m_raycastInfo.m_suspensionLength = minSuspensionLength;
}
if (wheel.m_raycastInfo.m_suspensionLength > maxSuspensionLength)
{
wheel.m_raycastInfo.m_suspensionLength = maxSuspensionLength;
}
wheel.m_raycastInfo.m_contactPointWS = rayResults.m_hitPointInWorld;
btScalar denominator = wheel.m_raycastInfo.m_contactNormalWS.dot(
wheel.m_raycastInfo.m_wheelDirectionWS );
btVector3 chassis_velocity_at_contactPoint;
btVector3 relpos = wheel.m_raycastInfo.m_contactPointWS
- getRigidBody()->getCenterOfMassPosition();
chassis_velocity_at_contactPoint =
getRigidBody()->getVelocityInLocalPoint(relpos);
btScalar projVel = wheel.m_raycastInfo.m_contactNormalWS.dot(
chassis_velocity_at_contactPoint );
if ( denominator >= btScalar(-0.1))
{
wheel.m_suspensionRelativeVelocity = btScalar(0.0);
wheel.m_clippedInvContactDotSuspension = btScalar(1.0) / btScalar(0.1);
}
else
{
btScalar inv = btScalar(-1.) / denominator;
wheel.m_suspensionRelativeVelocity = projVel * inv;
wheel.m_clippedInvContactDotSuspension = inv;
}
} else
{
depth = btScalar(-1.0);
//put wheel info as in rest position
wheel.m_raycastInfo.m_suspensionLength = wheel.getSuspensionRestLength();
wheel.m_suspensionRelativeVelocity = btScalar(0.0);
wheel.m_raycastInfo.m_contactNormalWS =
- wheel.m_raycastInfo.m_wheelDirectionWS;
wheel.m_clippedInvContactDotSuspension = btScalar(1.0);
}
#define USE_VISUAL
#ifndef USE_VISUAL
m_visual_contact_point[index] = rayResults.m_hitPointInWorld;
#else
if(index==2 || index==3)
{
btTransform chassisTrans = getChassisWorldTransform();
if (getRigidBody()->getMotionState())
{
getRigidBody()->getMotionState()->getWorldTransform(chassisTrans);
}
btQuaternion q(m_visual_rotation, 0, 0);
btQuaternion rot_new = chassisTrans.getRotation() * q;
chassisTrans.setRotation(rot_new);
btVector3 pos = m_kart->getKartModel()->getWheelGraphicsPosition(index);
pos.setZ(pos.getZ()*0.9f);
btVector3 source = chassisTrans( pos );
btVector3 target = source + rayvector;
btVehicleRaycaster::btVehicleRaycasterResult rayResults;
void* object = m_vehicleRaycaster->castRay(source,target,rayResults);
m_visual_contact_point[index] = rayResults.m_hitPointInWorld;
m_visual_contact_point[index-2] = source;
m_visual_wheels_touch_ground &= (object!=NULL);
}
#endif
if(m_chassisBody->getBroadphaseHandle())
{
m_chassisBody->getBroadphaseHandle()->m_collisionFilterGroup
= old_group;
}
return depth;
} // rayCast
bool btBulletWorldImporter::loadFileFromMemory( bParse::btBulletFile* bulletFile2)
{
bool ok = (bulletFile2->getFlags()& bParse::FD_OK)!=0;
if (ok)
bulletFile2->parse(m_verboseDumpAllTypes);
else
return false;
if (m_verboseDumpAllTypes)
{
bulletFile2->dumpChunks(bulletFile2->getFileDNA());
}
int i;
btHashMap<btHashPtr,btCollisionShape*> shapeMap;
for (i=0;i<bulletFile2->m_collisionShapes.size();i++)
{
btCollisionShapeData* shapeData = (btCollisionShapeData*)bulletFile2->m_collisionShapes[i];
btCollisionShape* shape = convertCollisionShape(shapeData);
if (shape)
shapeMap.insert(shapeData,shape);
}
btHashMap<btHashPtr,btCollisionObject*> bodyMap;
for (i=0;i<bulletFile2->m_rigidBodies.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btRigidBodyDoubleData* colObjData = (btRigidBodyDoubleData*)bulletFile2->m_rigidBodies[i];
btScalar mass = btScalar(colObjData->m_inverseMass? 1.f/colObjData->m_inverseMass : 0.f);
btVector3 localInertia;
localInertia.setZero();
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionObjectData.m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeDouble(colObjData->m_collisionObjectData.m_worldTransform);
// startTransform.setBasis(btMatrix3x3::getIdentity());
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
if (mass)
{
shape->calculateLocalInertia(mass,localInertia);
}
bool isDynamic = mass!=0.f;
btRigidBody* body = createRigidBody(isDynamic,mass,startTransform,shape);
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
} else
{
btRigidBodyFloatData* colObjData = (btRigidBodyFloatData*)bulletFile2->m_rigidBodies[i];
btScalar mass = btScalar(colObjData->m_inverseMass? 1.f/colObjData->m_inverseMass : 0.f);
btVector3 localInertia;
localInertia.setZero();
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionObjectData.m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeFloat(colObjData->m_collisionObjectData.m_worldTransform);
// startTransform.setBasis(btMatrix3x3::getIdentity());
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
if (mass)
{
shape->calculateLocalInertia(mass,localInertia);
}
bool isDynamic = mass!=0.f;
btRigidBody* body = createRigidBody(isDynamic,mass,startTransform,shape);
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
}
}
for (i=0;i<bulletFile2->m_collisionObjects.size();i++)
{
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btCollisionObjectDoubleData* colObjData = (btCollisionObjectDoubleData*)bulletFile2->m_collisionObjects[i];
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeDouble(colObjData->m_worldTransform);
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
btCollisionObject* body = createCollisionObject(startTransform,shape);
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
} else
{
btCollisionObjectFloatData* colObjData = (btCollisionObjectFloatData*)bulletFile2->m_collisionObjects[i];
btCollisionShape** shapePtr = shapeMap.find(colObjData->m_collisionShape);
if (shapePtr && *shapePtr)
{
btTransform startTransform;
startTransform.deSerializeFloat(colObjData->m_worldTransform);
btCollisionShape* shape = (btCollisionShape*)*shapePtr;
btCollisionObject* body = createCollisionObject(startTransform,shape);
bodyMap.insert(colObjData,body);
} else
{
printf("error: no shape found\n");
}
}
printf("bla");
}
for (i=0;i<bulletFile2->m_constraints.size();i++)
{
btTypedConstraintData* constraintData = (btTypedConstraintData*)bulletFile2->m_constraints[i];
btCollisionObject** colAptr = bodyMap.find(constraintData->m_rbA);
btCollisionObject** colBptr = bodyMap.find(constraintData->m_rbB);
btRigidBody* rbA = 0;
btRigidBody* rbB = 0;
if (colAptr)
{
rbA = btRigidBody::upcast(*colAptr);
if (!rbA)
rbA = &getFixedBody();
}
if (colBptr)
{
rbB = btRigidBody::upcast(*colBptr);
if (!rbB)
rbB = &getFixedBody();
}
switch (constraintData->m_objectType)
{
case POINT2POINT_CONSTRAINT_TYPE:
{
btPoint2PointConstraint* constraint = 0;
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btPoint2PointConstraintDoubleData* p2pData = (btPoint2PointConstraintDoubleData*)constraintData;
if (rbA && rbB)
{
btVector3 pivotInA,pivotInB;
pivotInA.deSerializeDouble(p2pData->m_pivotInA);
pivotInB.deSerializeDouble(p2pData->m_pivotInB);
constraint = new btPoint2PointConstraint(*rbA,*rbB,pivotInA,pivotInB);
} else
{
btVector3 pivotInA;
pivotInA.deSerializeDouble(p2pData->m_pivotInA);
constraint = new btPoint2PointConstraint(*rbA,pivotInA);
}
} else
{
btPoint2PointConstraintFloatData* p2pData = (btPoint2PointConstraintFloatData*)constraintData;
if (rbA&& rbB)
{
btVector3 pivotInA,pivotInB;
pivotInA.deSerializeFloat(p2pData->m_pivotInA);
pivotInB.deSerializeFloat(p2pData->m_pivotInB);
constraint = new btPoint2PointConstraint(*rbA,*rbB,pivotInA,pivotInB);
} else
{
btVector3 pivotInA;
pivotInA.deSerializeFloat(p2pData->m_pivotInA);
constraint = new btPoint2PointConstraint(*rbA,pivotInA);
}
}
m_dynamicsWorld->addConstraint(constraint,constraintData->m_disableCollisionsBetweenLinkedBodies!=0);
constraint->setDbgDrawSize(constraintData->m_dbgDrawSize);
break;
}
case HINGE_CONSTRAINT_TYPE:
{
btHingeConstraint* hinge = 0;
if (bulletFile2->getFlags() & bParse::FD_DOUBLE_PRECISION)
{
btHingeConstraintDoubleData* hingeData = (btHingeConstraintDoubleData*)constraintData;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeDouble(hingeData->m_rbAFrame);
rbBFrame.deSerializeDouble(hingeData->m_rbBFrame);
hinge = new btHingeConstraint(*rbA,*rbB,rbAFrame,rbBFrame,hingeData->m_useReferenceFrameA!=0);
} else
{
btTransform rbAFrame;
rbAFrame.deSerializeDouble(hingeData->m_rbAFrame);
hinge = new btHingeConstraint(*rbA,rbAFrame,hingeData->m_useReferenceFrameA!=0);
}
if (hingeData->m_enableAngularMotor)
{
hinge->enableAngularMotor(true,hingeData->m_motorTargetVelocity,hingeData->m_maxMotorImpulse);
}
hinge->setAngularOnly(hingeData->m_angularOnly!=0);
hinge->setLimit(btScalar(hingeData->m_lowerLimit),btScalar(hingeData->m_upperLimit),btScalar(hingeData->m_limitSoftness),btScalar(hingeData->m_biasFactor),btScalar(hingeData->m_relaxationFactor));
} else
{
btHingeConstraintFloatData* hingeData = (btHingeConstraintFloatData*)constraintData;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(hingeData->m_rbAFrame);
rbBFrame.deSerializeFloat(hingeData->m_rbBFrame);
hinge = new btHingeConstraint(*rbA,*rbB,rbAFrame,rbBFrame,hingeData->m_useReferenceFrameA!=0);
} else
{
btTransform rbAFrame;
rbAFrame.deSerializeFloat(hingeData->m_rbAFrame);
hinge = new btHingeConstraint(*rbA,rbAFrame,hingeData->m_useReferenceFrameA!=0);
}
if (hingeData->m_enableAngularMotor)
{
hinge->enableAngularMotor(true,hingeData->m_motorTargetVelocity,hingeData->m_maxMotorImpulse);
}
hinge->setAngularOnly(hingeData->m_angularOnly!=0);
hinge->setLimit(btScalar(hingeData->m_lowerLimit),btScalar(hingeData->m_upperLimit),btScalar(hingeData->m_limitSoftness),btScalar(hingeData->m_biasFactor),btScalar(hingeData->m_relaxationFactor));
}
m_dynamicsWorld->addConstraint(hinge,constraintData->m_disableCollisionsBetweenLinkedBodies!=0);
hinge->setDbgDrawSize(constraintData->m_dbgDrawSize);
break;
}
case CONETWIST_CONSTRAINT_TYPE:
{
btConeTwistConstraintData* coneData = (btConeTwistConstraintData*)constraintData;
btConeTwistConstraint* coneTwist = 0;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(coneData->m_rbAFrame);
rbBFrame.deSerializeFloat(coneData->m_rbBFrame);
coneTwist = new btConeTwistConstraint(*rbA,*rbB,rbAFrame,rbBFrame);
} else
{
btTransform rbAFrame;
rbAFrame.deSerializeFloat(coneData->m_rbAFrame);
coneTwist = new btConeTwistConstraint(*rbA,rbAFrame);
}
coneTwist->setLimit(coneData->m_swingSpan1,coneData->m_swingSpan2,coneData->m_twistSpan,coneData->m_limitSoftness,coneData->m_biasFactor,coneData->m_relaxationFactor);
coneTwist->setDamping(coneData->m_damping);
m_dynamicsWorld->addConstraint(coneTwist,constraintData->m_disableCollisionsBetweenLinkedBodies!=0);
coneTwist->setDbgDrawSize(constraintData->m_dbgDrawSize);
break;
}
case D6_CONSTRAINT_TYPE:
{
btGeneric6DofConstraintData* dofData = (btGeneric6DofConstraintData*)constraintData;
btGeneric6DofConstraint* dof = 0;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(dofData->m_rbAFrame);
rbBFrame.deSerializeFloat(dofData->m_rbBFrame);
dof = new btGeneric6DofConstraint(*rbA,*rbB,rbAFrame,rbBFrame,dofData->m_useLinearReferenceFrameA!=0);
} else
{
btTransform rbBFrame;
rbBFrame.deSerializeFloat(dofData->m_rbBFrame);
dof = new btGeneric6DofConstraint(*rbB,rbBFrame,dofData->m_useLinearReferenceFrameA!=0);
}
btVector3 angLowerLimit,angUpperLimit, linLowerLimit,linUpperlimit;
angLowerLimit.deSerializeFloat(dofData->m_angularLowerLimit);
angUpperLimit.deSerializeFloat(dofData->m_angularUpperLimit);
linLowerLimit.deSerializeFloat(dofData->m_linearLowerLimit);
linUpperlimit.deSerializeFloat(dofData->m_linearUpperLimit);
dof->setAngularLowerLimit(angLowerLimit);
dof->setAngularUpperLimit(angUpperLimit);
dof->setLinearLowerLimit(linLowerLimit);
dof->setLinearUpperLimit(linUpperlimit);
m_dynamicsWorld->addConstraint(dof,constraintData->m_disableCollisionsBetweenLinkedBodies!=0);
dof->setDbgDrawSize(constraintData->m_dbgDrawSize);
break;
}
case SLIDER_CONSTRAINT_TYPE:
{
btSliderConstraintData* sliderData = (btSliderConstraintData*)constraintData;
btSliderConstraint* slider = 0;
if (rbA&& rbB)
{
btTransform rbAFrame,rbBFrame;
rbAFrame.deSerializeFloat(sliderData->m_rbAFrame);
rbBFrame.deSerializeFloat(sliderData->m_rbBFrame);
slider = new btSliderConstraint(*rbA,*rbB,rbAFrame,rbBFrame,sliderData->m_useLinearReferenceFrameA!=0);
} else
{
btTransform rbBFrame;
rbBFrame.deSerializeFloat(sliderData->m_rbBFrame);
slider = new btSliderConstraint(*rbB,rbBFrame,sliderData->m_useLinearReferenceFrameA!=0);
}
slider->setLowerLinLimit(sliderData->m_linearLowerLimit);
slider->setUpperLinLimit(sliderData->m_linearUpperLimit);
slider->setLowerAngLimit(sliderData->m_angularLowerLimit);
slider->setUpperAngLimit(sliderData->m_angularUpperLimit);
slider->setUseFrameOffset(sliderData->m_useOffsetForConstraintFrame!=0);
m_dynamicsWorld->addConstraint(slider,constraintData->m_disableCollisionsBetweenLinkedBodies!=0);
slider->setDbgDrawSize(constraintData->m_dbgDrawSize);
break;
}
default:
{
printf("unknown constraint type\n");
}
};
}
return true;
}
