EntityRenderer::EntityRenderer(const EntityItemPointer& entity) : _entity(entity) {
connect(entity.get(), &EntityItem::requestRenderUpdate, this, [&] {
_needsRenderUpdate = true;
emit requestRenderUpdate();
});
_materials = entity->getMaterials();
}
EntityMotionState::EntityMotionState(btCollisionShape* shape, EntityItemPointer entity) :
ObjectMotionState(nullptr),
_entityPtr(entity),
_entity(entity.get()),
_serverPosition(0.0f),
_serverRotation(),
_serverVelocity(0.0f),
_serverAngularVelocity(0.0f),
_serverGravity(0.0f),
_serverAcceleration(0.0f),
_serverActionData(QByteArray()),
_lastVelocity(0.0f),
_measuredAcceleration(0.0f),
_nextOwnershipBid(0),
_measuredDeltaTime(0.0f),
_lastMeasureStep(0),
_lastStep(0),
_loopsWithoutOwner(0),
_accelerationNearlyGravityCount(0),
_numInactiveUpdates(1),
_outgoingPriority(0)
{
_type = MOTIONSTATE_TYPE_ENTITY;
assert(_entity);
assert(entityTreeIsLocked());
setMass(_entity->computeMass());
// we need the side-effects of EntityMotionState::setShape() so we call it explicitly here
// rather than pass the legit shape pointer to the ObjectMotionState ctor above.
setShape(shape);
}
void PhysicalEntitySimulation::handleOutgoingChanges(const VectorOfMotionStates& motionStates, const QUuid& sessionID) {
QMutexLocker lock(&_mutex);
// walk the motionStates looking for those that correspond to entities
for (auto stateItr : motionStates) {
ObjectMotionState* state = &(*stateItr);
if (state && state->getType() == MOTIONSTATE_TYPE_ENTITY) {
EntityMotionState* entityState = static_cast<EntityMotionState*>(state);
EntityItemPointer entity = entityState->getEntity();
assert(entity.get());
if (entityState->isCandidateForOwnership(sessionID)) {
_outgoingChanges.insert(entityState);
}
_entitiesToSort.insert(entity);
}
}
uint32_t numSubsteps = _physicsEngine->getNumSubsteps();
if (_lastStepSendPackets != numSubsteps) {
_lastStepSendPackets = numSubsteps;
if (sessionID.isNull()) {
// usually don't get here, but if so --> nothing to do
_outgoingChanges.clear();
return;
}
// look for entities to prune or update
QSet<EntityMotionState*>::iterator stateItr = _outgoingChanges.begin();
while (stateItr != _outgoingChanges.end()) {
EntityMotionState* state = *stateItr;
if (!state->isCandidateForOwnership(sessionID)) {
// prune
stateItr = _outgoingChanges.erase(stateItr);
} else if (state->shouldSendUpdate(numSubsteps, sessionID)) {
// update
state->sendUpdate(_entityPacketSender, sessionID, numSubsteps);
++stateItr;
} else {
++stateItr;
}
}
}
}
