bool EntityMotionState::entityTreeIsLocked() const {
EntityTreeElementPointer element = _entity ? _entity->getElement() : nullptr;
EntityTreePointer tree = element ? element->getTree() : nullptr;
if (!tree) {
return true;
}
return true;
}
EntityItemPointer ObjectDynamic::getEntityByID(EntityItemID entityID) const {
EntityItemPointer ownerEntity;
withReadLock([&]{
ownerEntity = _ownerEntity.lock();
});
EntityTreeElementPointer element = ownerEntity ? ownerEntity->getElement() : nullptr;
EntityTreePointer tree = element ? element->getTree() : nullptr;
if (!tree) {
return nullptr;
}
return tree->findEntityByID(entityID);
}
void EntityMotionState::sendBid(OctreeEditPacketSender* packetSender, uint32_t step) {
DETAILED_PROFILE_RANGE(simulation_physics, "Bid");
assert(entityTreeIsLocked());
updateSendVelocities();
EntityItemProperties properties;
Transform localTransform;
glm::vec3 linearVelocity;
glm::vec3 angularVelocity;
_entity->getLocalTransformAndVelocities(localTransform, linearVelocity, angularVelocity);
properties.setPosition(localTransform.getTranslation());
properties.setRotation(localTransform.getRotation());
properties.setVelocity(linearVelocity);
properties.setAcceleration(_entity->getAcceleration());
properties.setAngularVelocity(angularVelocity);
// we don't own the simulation for this entity yet, but we're sending a bid for it
quint64 now = usecTimestampNow();
uint8_t finalBidPriority = computeFinalBidPriority();
_entity->prepareForSimulationOwnershipBid(properties, now, finalBidPriority);
EntityTreeElementPointer element = _entity->getElement();
EntityTreePointer tree = element ? element->getTree() : nullptr;
EntityItemID id(_entity->getID());
EntityEditPacketSender* entityPacketSender = static_cast<EntityEditPacketSender*>(packetSender);
entityPacketSender->queueEditEntityMessage(PacketType::EntityPhysics, tree, id, properties);
// NOTE: we don't descend to children for ownership bid. Instead, if we win ownership of the parent
// then in sendUpdate() we'll walk descendents and send updates for their QueryAACubes if necessary.
_lastStep = step;
_nextBidExpiry = now + USECS_BETWEEN_OWNERSHIP_BIDS;
// after sending a bid/update we clear _bumpedPriority
// which might get promoted again next frame (after local script or simulation interaction)
// or we might win the bid
_bumpedPriority = 0;
}
void EntityMotionState::sendUpdate(OctreeEditPacketSender* packetSender, uint32_t step) {
DETAILED_PROFILE_RANGE(simulation_physics, "Send");
assert(entityTreeIsLocked());
assert(isLocallyOwned());
updateSendVelocities();
// remember _serverFoo data for local prediction of server state
Transform localTransform;
_entity->getLocalTransformAndVelocities(localTransform, _serverVelocity, _serverAngularVelocity);
_serverPosition = localTransform.getTranslation();
_serverRotation = localTransform.getRotation();
_serverAcceleration = _entity->getAcceleration();
_serverActionData = _entity->getDynamicData();
EntityItemProperties properties;
properties.setPosition(_entity->getLocalPosition());
properties.setRotation(_entity->getLocalOrientation());
properties.setVelocity(_serverVelocity);
properties.setAcceleration(_serverAcceleration);
properties.setAngularVelocity(_serverAngularVelocity);
if (_entity->dynamicDataNeedsTransmit()) {
_entity->setDynamicDataNeedsTransmit(false);
properties.setActionData(_serverActionData);
}
if (_entity->updateQueryAACube()) {
// due to parenting, the server may not know where something is in world-space, so include the bounding cube.
properties.setQueryAACube(_entity->getQueryAACube());
}
// set the LastEdited of the properties but NOT the entity itself
quint64 now = usecTimestampNow();
properties.setLastEdited(now);
_entity->setSimulationOwnershipExpiry(now + MAX_OUTGOING_SIMULATION_UPDATE_PERIOD);
if (_numInactiveUpdates > 0 && _entity->getScriptSimulationPriority() == 0) {
// the entity is stopped and inactive so we tell the server we're clearing simulatorID
// but we remember we do still own it... and rely on the server to tell us we don't
properties.clearSimulationOwner();
_entity->setPendingOwnershipPriority(0);
} else {
uint8_t newPriority = computeFinalBidPriority();
_entity->clearScriptSimulationPriority();
// if we get here then we own the simulation and the object is NOT going inactive
// if newPriority is zero, then it must be outside of R1, which means we should really set it to YIELD
// which we achive by just setting it to the max of the two
newPriority = glm::max(newPriority, YIELD_SIMULATION_PRIORITY);
if (newPriority != _entity->getSimulationPriority() &&
!(newPriority == VOLUNTEER_SIMULATION_PRIORITY && _entity->getSimulationPriority() == RECRUIT_SIMULATION_PRIORITY)) {
// our desired priority has changed
if (newPriority == 0) {
// we should release ownership
properties.clearSimulationOwner();
} else {
// we just need to inform the entity-server
properties.setSimulationOwner(Physics::getSessionUUID(), newPriority);
}
_entity->setPendingOwnershipPriority(newPriority);
}
}
EntityItemID id(_entity->getID());
EntityEditPacketSender* entityPacketSender = static_cast<EntityEditPacketSender*>(packetSender);
EntityTreeElementPointer element = _entity->getElement();
EntityTreePointer tree = element ? element->getTree() : nullptr;
properties.setEntityHostType(_entity->getEntityHostType());
properties.setOwningAvatarID(_entity->getOwningAvatarID());
entityPacketSender->queueEditEntityMessage(PacketType::EntityPhysics, tree, id, properties);
_entity->setLastBroadcast(now); // for debug/physics status icons
// if we've moved an entity with children, check/update the queryAACube of all descendents and tell the server
// if they've changed.
_entity->forEachDescendant([&](SpatiallyNestablePointer descendant) {
if (descendant->getNestableType() == NestableType::Entity) {
EntityItemPointer entityDescendant = std::static_pointer_cast<EntityItem>(descendant);
if (descendant->updateQueryAACube()) {
EntityItemProperties newQueryCubeProperties;
newQueryCubeProperties.setQueryAACube(descendant->getQueryAACube());
newQueryCubeProperties.setLastEdited(properties.getLastEdited());
newQueryCubeProperties.setEntityHostType(entityDescendant->getEntityHostType());
newQueryCubeProperties.setOwningAvatarID(entityDescendant->getOwningAvatarID());
entityPacketSender->queueEditEntityMessage(PacketType::EntityPhysics, tree,
descendant->getID(), newQueryCubeProperties);
entityDescendant->setLastBroadcast(now); // for debug/physics status icons
}
}
});
_lastStep = step;
// after sending a bid/update we clear _bumpedPriority
// which might get promoted again next frame (after local script or simulation interaction)
// or we might win the bid
_bumpedPriority = 0;
}
void EntityMotionState::sendUpdate(OctreeEditPacketSender* packetSender, uint32_t step) {
assert(_entity);
assert(entityTreeIsLocked());
if (!_body->isActive()) {
// make sure all derivatives are zero
_entity->setVelocity(Vectors::ZERO);
_entity->setAngularVelocity(Vectors::ZERO);
_entity->setAcceleration(Vectors::ZERO);
_numInactiveUpdates++;
} else {
glm::vec3 gravity = _entity->getGravity();
// if this entity has been accelerated at close to gravity for a certain number of simulation-steps, let
// the entity server's estimates include gravity.
const uint8_t STEPS_TO_DECIDE_BALLISTIC = 4;
if (_accelerationNearlyGravityCount >= STEPS_TO_DECIDE_BALLISTIC) {
_entity->setAcceleration(gravity);
} else {
_entity->setAcceleration(Vectors::ZERO);
}
if (!_body->isStaticOrKinematicObject()) {
const float DYNAMIC_LINEAR_VELOCITY_THRESHOLD = 0.05f; // 5 cm/sec
const float DYNAMIC_ANGULAR_VELOCITY_THRESHOLD = 0.087266f; // ~5 deg/sec
bool movingSlowlyLinear =
glm::length2(_entity->getVelocity()) < (DYNAMIC_LINEAR_VELOCITY_THRESHOLD * DYNAMIC_LINEAR_VELOCITY_THRESHOLD);
bool movingSlowlyAngular = glm::length2(_entity->getAngularVelocity()) <
(DYNAMIC_ANGULAR_VELOCITY_THRESHOLD * DYNAMIC_ANGULAR_VELOCITY_THRESHOLD);
bool movingSlowly = movingSlowlyLinear && movingSlowlyAngular && _entity->getAcceleration() == Vectors::ZERO;
if (movingSlowly) {
// velocities might not be zero, but we'll fake them as such, which will hopefully help convince
// other simulating observers to deactivate their own copies
glm::vec3 zero(0.0f);
_entity->setVelocity(zero);
_entity->setAngularVelocity(zero);
}
}
_numInactiveUpdates = 0;
}
// remember properties for local server prediction
Transform localTransform;
_entity->getLocalTransformAndVelocities(localTransform, _serverVelocity, _serverAngularVelocity);
_serverPosition = localTransform.getTranslation();
_serverRotation = localTransform.getRotation();
_serverAcceleration = _entity->getAcceleration();
_serverActionData = _entity->getActionData();
EntityItemProperties properties;
// explicitly set the properties that changed so that they will be packed
properties.setPosition(_entity->getLocalPosition());
properties.setRotation(_entity->getLocalOrientation());
properties.setVelocity(_serverVelocity);
properties.setAcceleration(_serverAcceleration);
properties.setAngularVelocity(_serverAngularVelocity);
if (_entity->actionDataNeedsTransmit()) {
_entity->setActionDataNeedsTransmit(false);
properties.setActionData(_serverActionData);
}
if (properties.parentRelatedPropertyChanged() && _entity->computePuffedQueryAACube()) {
// due to parenting, the server may not know where something is in world-space, so include the bounding cube.
properties.setQueryAACube(_entity->getQueryAACube());
}
// set the LastEdited of the properties but NOT the entity itself
quint64 now = usecTimestampNow();
properties.setLastEdited(now);
#ifdef WANT_DEBUG
quint64 lastSimulated = _entity->getLastSimulated();
qCDebug(physics) << "EntityMotionState::sendUpdate()";
qCDebug(physics) << " EntityItemId:" << _entity->getEntityItemID()
<< "---------------------------------------------";
qCDebug(physics) << " lastSimulated:" << debugTime(lastSimulated, now);
#endif //def WANT_DEBUG
if (_numInactiveUpdates > 0) {
// we own the simulation but the entity has stopped so we tell the server we're clearing simulatorID
// but we remember we do still own it... and rely on the server to tell us we don't
properties.clearSimulationOwner();
_outgoingPriority = 0;
_entity->setPendingOwnershipPriority(_outgoingPriority, now);
} else if (Physics::getSessionUUID() != _entity->getSimulatorID()) {
// we don't own the simulation for this entity yet, but we're sending a bid for it
quint8 bidPriority = glm::max<uint8_t>(_outgoingPriority, VOLUNTEER_SIMULATION_PRIORITY);
properties.setSimulationOwner(Physics::getSessionUUID(), bidPriority);
_nextOwnershipBid = now + USECS_BETWEEN_OWNERSHIP_BIDS;
// copy _outgoingPriority into pendingPriority...
_entity->setPendingOwnershipPriority(_outgoingPriority, now);
// ...then reset _outgoingPriority in preparation for the next frame
_outgoingPriority = 0;
} else if (_outgoingPriority != _entity->getSimulationPriority()) {
// we own the simulation but our desired priority has changed
if (_outgoingPriority == 0) {
// we should release ownership
properties.clearSimulationOwner();
} else {
// we just need to change the priority
properties.setSimulationOwner(Physics::getSessionUUID(), _outgoingPriority);
}
_entity->setPendingOwnershipPriority(_outgoingPriority, now);
}
EntityItemID id(_entity->getID());
EntityEditPacketSender* entityPacketSender = static_cast<EntityEditPacketSender*>(packetSender);
#ifdef WANT_DEBUG
qCDebug(physics) << "EntityMotionState::sendUpdate()... calling queueEditEntityMessage()...";
#endif
EntityTreeElementPointer element = _entity->getElement();
EntityTreePointer tree = element ? element->getTree() : nullptr;
properties.setClientOnly(_entity->getClientOnly());
properties.setOwningAvatarID(_entity->getOwningAvatarID());
entityPacketSender->queueEditEntityMessage(PacketType::EntityEdit, tree, id, properties);
_entity->setLastBroadcast(now);
// if we've moved an entity with children, check/update the queryAACube of all descendents and tell the server
// if they've changed.
_entity->forEachDescendant([&](SpatiallyNestablePointer descendant) {
if (descendant->getNestableType() == NestableType::Entity) {
EntityItemPointer entityDescendant = std::static_pointer_cast<EntityItem>(descendant);
if (descendant->computePuffedQueryAACube()) {
EntityItemProperties newQueryCubeProperties;
newQueryCubeProperties.setQueryAACube(descendant->getQueryAACube());
newQueryCubeProperties.setLastEdited(properties.getLastEdited());
newQueryCubeProperties.setClientOnly(entityDescendant->getClientOnly());
newQueryCubeProperties.setOwningAvatarID(entityDescendant->getOwningAvatarID());
entityPacketSender->queueEditEntityMessage(PacketType::EntityEdit, tree,
descendant->getID(), newQueryCubeProperties);
entityDescendant->setLastBroadcast(now);
}
}
});
_lastStep = step;
}
