void SimpleEntitySimulation::updateEntitiesInternal(const quint64& now) {
// If an Entity has a simulation owner and we don't get an update for some amount of time,
// clear the owner. This guards against an interface failing to release the Entity when it
// has finished simulating it.
auto nodeList = DependencyManager::get<LimitedNodeList>();
SetOfEntities::iterator itemItr = _entitiesWithSimulator.begin();
while (itemItr != _entitiesWithSimulator.end()) {
EntityItemPointer entity = *itemItr;
if (entity->getSimulatorID().isNull()) {
itemItr = _entitiesWithSimulator.erase(itemItr);
} else if (now - entity->getLastChangedOnServer() >= AUTO_REMOVE_SIMULATION_OWNER_USEC) {
SharedNodePointer ownerNode = nodeList->nodeWithUUID(entity->getSimulatorID());
if (ownerNode.isNull() || !ownerNode->isAlive()) {
qCDebug(entities) << "auto-removing simulation owner" << entity->getSimulatorID();
entity->clearSimulationOwnership();
itemItr = _entitiesWithSimulator.erase(itemItr);
// zero the velocity on this entity so that it doesn't drift far away
entity->setVelocity(glm::vec3(0.0f));
} else {
++itemItr;
}
} else {
++itemItr;
}
}
}
void SimpleEntitySimulation::clearOwnership(const QUuid& ownerID) {
QMutexLocker lock(&_mutex);
SetOfEntities::iterator itemItr = _entitiesWithSimulationOwner.begin();
while (itemItr != _entitiesWithSimulationOwner.end()) {
EntityItemPointer entity = *itemItr;
if (entity->getSimulatorID() == ownerID) {
// the simulator has abandonded this object --> remove from owned list
qCDebug(entities) << "auto-removing simulation owner " << entity->getSimulatorID();
itemItr = _entitiesWithSimulationOwner.erase(itemItr);
if (entity->getDynamic() && entity->hasLocalVelocity()) {
// it is still moving dynamically --> add to orphaned list
_entitiesThatNeedSimulationOwner.insert(entity);
quint64 expiry = entity->getLastChangedOnServer() + MAX_OWNERLESS_PERIOD;
if (expiry < _nextOwnerlessExpiry) {
_nextOwnerlessExpiry = expiry;
}
}
// remove ownership and dirty all the tree elements that contain the it
entity->clearSimulationOwnership();
entity->markAsChangedOnServer();
DirtyOctreeElementOperator op(entity->getElement());
getEntityTree()->recurseTreeWithOperator(&op);
} else {
++itemItr;
}
}
}
void SimpleEntitySimulation::changeEntityInternal(EntityItemPointer entity) {
EntitySimulation::changeEntityInternal(entity);
if (!entity->getSimulatorID().isNull()) {
_entitiesWithSimulator.insert(entity);
}
entity->clearDirtyFlags();
}
void SimpleEntitySimulation::updateEntitiesInternal(const quint64& now) {
if (now > _nextOwnerlessExpiry) {
// search for ownerless objects that have expired
QMutexLocker lock(&_mutex);
_nextOwnerlessExpiry = -1;
SetOfEntities::iterator itemItr = _entitiesThatNeedSimulationOwner.begin();
while (itemItr != _entitiesThatNeedSimulationOwner.end()) {
EntityItemPointer entity = *itemItr;
quint64 expiry = entity->getLastChangedOnServer() + MAX_OWNERLESS_PERIOD;
if (expiry < now) {
// no simulators have volunteered ownership --> remove from list
itemItr = _entitiesThatNeedSimulationOwner.erase(itemItr);
if (entity->getSimulatorID().isNull() && entity->getDynamic() && entity->hasLocalVelocity()) {
// zero the derivatives
entity->setVelocity(Vectors::ZERO);
entity->setAngularVelocity(Vectors::ZERO);
entity->setAcceleration(Vectors::ZERO);
// dirty all the tree elements that contain it
entity->markAsChangedOnServer();
DirtyOctreeElementOperator op(entity->getElement());
getEntityTree()->recurseTreeWithOperator(&op);
}
} else {
++itemItr;
if (expiry < _nextOwnerlessExpiry) {
_nextOwnerlessExpiry = expiry;
}
}
}
}
}
QUuid EntityScriptingInterface::editEntity(QUuid id, EntityItemProperties properties) {
EntityItemID entityID(id);
// If we have a local entity tree set, then also update it.
if (!_entityTree) {
queueEntityMessage(PacketType::EntityEdit, entityID, properties);
return id;
}
bool updatedEntity = false;
_entityTree->withWriteLock([&] {
updatedEntity = _entityTree->updateEntity(entityID, properties);
});
if (!updatedEntity) {
return QUuid();
}
_entityTree->withReadLock([&] {
EntityItemPointer entity = _entityTree->findEntityByEntityItemID(entityID);
if (entity) {
// make sure the properties has a type, so that the encode can know which properties to include
properties.setType(entity->getType());
bool hasTerseUpdateChanges = properties.hasTerseUpdateChanges();
bool hasPhysicsChanges = properties.hasMiscPhysicsChanges() || hasTerseUpdateChanges;
if (hasPhysicsChanges) {
auto nodeList = DependencyManager::get<NodeList>();
const QUuid myNodeID = nodeList->getSessionUUID();
if (entity->getSimulatorID() == myNodeID) {
// we think we already own the simulation, so make sure to send ALL TerseUpdate properties
if (hasTerseUpdateChanges) {
entity->getAllTerseUpdateProperties(properties);
}
// TODO: if we knew that ONLY TerseUpdate properties have changed in properties AND the object
// is dynamic AND it is active in the physics simulation then we could chose to NOT queue an update
// and instead let the physics simulation decide when to send a terse update. This would remove
// the "slide-no-rotate" glitch (and typical a double-update) that we see during the "poke rolling
// balls" test. However, even if we solve this problem we still need to provide a "slerp the visible
// proxy toward the true physical position" feature to hide the final glitches in the remote watcher's
// simulation.
if (entity->getSimulationPriority() < SCRIPT_EDIT_SIMULATION_PRIORITY) {
// we re-assert our simulation ownership at a higher priority
properties.setSimulationOwner(myNodeID,
glm::max(entity->getSimulationPriority(), SCRIPT_EDIT_SIMULATION_PRIORITY));
}
} else {
// we make a bid for simulation ownership
properties.setSimulationOwner(myNodeID, SCRIPT_EDIT_SIMULATION_PRIORITY);
entity->flagForOwnership();
}
}
entity->setLastBroadcast(usecTimestampNow());
}
});
queueEntityMessage(PacketType::EntityEdit, entityID, properties);
return id;
}
void SimpleEntitySimulation::addEntityInternal(EntityItemPointer entity) {
EntitySimulation::addEntityInternal(entity);
if (!entity->getSimulatorID().isNull()) {
QMutexLocker lock(&_mutex);
_entitiesWithSimulationOwner.insert(entity);
} else if (entity->getDynamic() && entity->hasLocalVelocity()) {
QMutexLocker lock(&_mutex);
_entitiesThatNeedSimulationOwner.insert(entity);
quint64 expiry = entity->getLastChangedOnServer() + MAX_OWNERLESS_PERIOD;
if (expiry < _nextOwnerlessExpiry) {
_nextOwnerlessExpiry = expiry;
}
}
}
bool EntityTree::updateEntityWithElement(EntityItemPointer entity, const EntityItemProperties& origProperties,
EntityTreeElementPointer containingElement, const SharedNodePointer& senderNode) {
EntityItemProperties properties = origProperties;
bool allowLockChange;
QUuid senderID;
if (senderNode.isNull()) {
auto nodeList = DependencyManager::get<NodeList>();
allowLockChange = nodeList->getThisNodeCanAdjustLocks();
senderID = nodeList->getSessionUUID();
} else {
allowLockChange = senderNode->getCanAdjustLocks();
senderID = senderNode->getUUID();
}
if (!allowLockChange && (entity->getLocked() != properties.getLocked())) {
qCDebug(entities) << "Refusing disallowed lock adjustment.";
return false;
}
// enforce support for locked entities. If an entity is currently locked, then the only
// property we allow you to change is the locked property.
if (entity->getLocked()) {
if (properties.lockedChanged()) {
bool wantsLocked = properties.getLocked();
if (!wantsLocked) {
EntityItemProperties tempProperties;
tempProperties.setLocked(wantsLocked);
UpdateEntityOperator theOperator(getThisPointer(), containingElement, entity, tempProperties);
recurseTreeWithOperator(&theOperator);
_isDirty = true;
}
}
} else {
if (getIsServer()) {
bool simulationBlocked = !entity->getSimulatorID().isNull();
if (properties.simulationOwnerChanged()) {
QUuid submittedID = properties.getSimulationOwner().getID();
// a legit interface will only submit their own ID or NULL:
if (submittedID.isNull()) {
if (entity->getSimulatorID() == senderID) {
// We only allow the simulation owner to clear their own simulationID's.
simulationBlocked = false;
properties.clearSimulationOwner(); // clear everything
}
// else: We assume the sender really did believe it was the simulation owner when it sent
} else if (submittedID == senderID) {
// the sender is trying to take or continue ownership
if (entity->getSimulatorID().isNull()) {
// the sender it taking ownership
properties.promoteSimulationPriority(RECRUIT_SIMULATION_PRIORITY);
simulationBlocked = false;
} else if (entity->getSimulatorID() == senderID) {
// the sender is asserting ownership
simulationBlocked = false;
} else {
// the sender is trying to steal ownership from another simulator
// so we apply the rules for ownership change:
// (1) higher priority wins
// (2) equal priority wins if ownership filter has expired except...
uint8_t oldPriority = entity->getSimulationPriority();
uint8_t newPriority = properties.getSimulationOwner().getPriority();
if (newPriority > oldPriority ||
(newPriority == oldPriority && properties.getSimulationOwner().hasExpired())) {
simulationBlocked = false;
}
}
} else {
// the entire update is suspect --> ignore it
return false;
}
} else {
simulationBlocked = senderID != entity->getSimulatorID();
}
if (simulationBlocked) {
// squash ownership and physics-related changes.
properties.setSimulationOwnerChanged(false);
properties.setPositionChanged(false);
properties.setRotationChanged(false);
properties.setVelocityChanged(false);
properties.setAngularVelocityChanged(false);
properties.setAccelerationChanged(false);
if (wantTerseEditLogging()) {
qCDebug(entities) << senderNode->getUUID() << "physical edits suppressed";
}
}
}
// else client accepts what the server says
QString entityScriptBefore = entity->getScript();
quint64 entityScriptTimestampBefore = entity->getScriptTimestamp();
QString collisionSoundURLBefore = entity->getCollisionSoundURL();
uint32_t preFlags = entity->getDirtyFlags();
UpdateEntityOperator theOperator(getThisPointer(), containingElement, entity, properties);
recurseTreeWithOperator(&theOperator);
_isDirty = true;
uint32_t newFlags = entity->getDirtyFlags() & ~preFlags;
if (newFlags) {
if (_simulation) {
if (newFlags & DIRTY_SIMULATION_FLAGS) {
_simulation->changeEntity(entity);
}
} else {
// normally the _simulation clears ALL updateFlags, but since there is none we do it explicitly
entity->clearDirtyFlags();
}
}
QString entityScriptAfter = entity->getScript();
quint64 entityScriptTimestampAfter = entity->getScriptTimestamp();
bool reload = entityScriptTimestampBefore != entityScriptTimestampAfter;
if (entityScriptBefore != entityScriptAfter || reload) {
emitEntityScriptChanging(entity->getEntityItemID(), reload); // the entity script has changed
}
maybeNotifyNewCollisionSoundURL(collisionSoundURLBefore, entity->getCollisionSoundURL());
}
// TODO: this final containingElement check should eventually be removed (or wrapped in an #ifdef DEBUG).
containingElement = getContainingElement(entity->getEntityItemID());
if (!containingElement) {
qCDebug(entities) << "UNEXPECTED!!!! after updateEntity() we no longer have a containing element??? entityID="
<< entity->getEntityItemID();
return false;
}
return true;
}
QUuid EntityScriptingInterface::editEntity(QUuid id, const EntityItemProperties& scriptSideProperties) {
EntityItemProperties properties = scriptSideProperties;
auto dimensions = properties.getDimensions();
float volume = dimensions.x * dimensions.y * dimensions.z;
auto density = properties.getDensity();
auto newVelocity = properties.getVelocity().length();
float oldVelocity = { 0.0f };
EntityItemID entityID(id);
if (!_entityTree) {
queueEntityMessage(PacketType::EntityEdit, entityID, properties);
//if there is no local entity entity tree, no existing velocity, use 0.
float cost = calculateCost(density * volume, oldVelocity, newVelocity);
cost *= costMultiplier;
if (cost > _currentAvatarEnergy) {
return QUuid();
} else {
//debit the avatar energy and continue
emit debitEnergySource(cost);
}
return id;
}
// If we have a local entity tree set, then also update it.
bool updatedEntity = false;
_entityTree->withWriteLock([&] {
if (scriptSideProperties.parentRelatedPropertyChanged()) {
// All of parentID, parentJointIndex, position, rotation are needed to make sense of any of them.
// If any of these changed, pull any missing properties from the entity.
EntityItemPointer entity = _entityTree->findEntityByEntityItemID(entityID);
if (!entity) {
return;
}
//existing entity, retrieve old velocity for check down below
oldVelocity = entity->getVelocity().length();
if (!scriptSideProperties.parentIDChanged()) {
properties.setParentID(entity->getParentID());
}
if (!scriptSideProperties.parentJointIndexChanged()) {
properties.setParentJointIndex(entity->getParentJointIndex());
}
if (!scriptSideProperties.localPositionChanged() && !scriptSideProperties.positionChanged()) {
properties.setPosition(entity->getPosition());
}
if (!scriptSideProperties.localRotationChanged() && !scriptSideProperties.rotationChanged()) {
properties.setRotation(entity->getOrientation());
}
}
properties = convertLocationFromScriptSemantics(properties);
float cost = calculateCost(density * volume, oldVelocity, newVelocity);
cost *= costMultiplier;
if (cost > _currentAvatarEnergy) {
updatedEntity = false;
} else {
//debit the avatar energy and continue
updatedEntity = _entityTree->updateEntity(entityID, properties);
if (updatedEntity) {
emit debitEnergySource(cost);
}
}
});
if (!updatedEntity) {
return QUuid();
}
_entityTree->withReadLock([&] {
EntityItemPointer entity = _entityTree->findEntityByEntityItemID(entityID);
if (entity) {
// make sure the properties has a type, so that the encode can know which properties to include
properties.setType(entity->getType());
bool hasTerseUpdateChanges = properties.hasTerseUpdateChanges();
bool hasPhysicsChanges = properties.hasMiscPhysicsChanges() || hasTerseUpdateChanges;
if (_bidOnSimulationOwnership && hasPhysicsChanges) {
auto nodeList = DependencyManager::get<NodeList>();
const QUuid myNodeID = nodeList->getSessionUUID();
if (entity->getSimulatorID() == myNodeID) {
// we think we already own the simulation, so make sure to send ALL TerseUpdate properties
if (hasTerseUpdateChanges) {
entity->getAllTerseUpdateProperties(properties);
}
// TODO: if we knew that ONLY TerseUpdate properties have changed in properties AND the object
// is dynamic AND it is active in the physics simulation then we could chose to NOT queue an update
// and instead let the physics simulation decide when to send a terse update. This would remove
// the "slide-no-rotate" glitch (and typical double-update) that we see during the "poke rolling
// balls" test. However, even if we solve this problem we still need to provide a "slerp the visible
// proxy toward the true physical position" feature to hide the final glitches in the remote watcher's
// simulation.
if (entity->getSimulationPriority() < SCRIPT_POKE_SIMULATION_PRIORITY) {
// we re-assert our simulation ownership at a higher priority
properties.setSimulationOwner(myNodeID, SCRIPT_POKE_SIMULATION_PRIORITY);
}
} else {
// we make a bid for simulation ownership
properties.setSimulationOwner(myNodeID, SCRIPT_POKE_SIMULATION_PRIORITY);
entity->pokeSimulationOwnership();
}
}
if (properties.parentRelatedPropertyChanged() && entity->computePuffedQueryAACube()) {
properties.setQueryAACube(entity->getQueryAACube());
}
entity->setLastBroadcast(usecTimestampNow());
// 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) {
if (descendant->computePuffedQueryAACube()) {
EntityItemPointer entityDescendant = std::static_pointer_cast<EntityItem>(descendant);
EntityItemProperties newQueryCubeProperties;
newQueryCubeProperties.setQueryAACube(descendant->getQueryAACube());
newQueryCubeProperties.setLastEdited(properties.getLastEdited());
queueEntityMessage(PacketType::EntityEdit, descendant->getID(), newQueryCubeProperties);
entityDescendant->setLastBroadcast(usecTimestampNow());
}
}
});
}
});
queueEntityMessage(PacketType::EntityEdit, entityID, properties);
return id;
}
bool EntityTree::updateEntityWithElement(EntityItemPointer entity, const EntityItemProperties& origProperties,
EntityTreeElement* containingElement, const SharedNodePointer& senderNode) {
EntityItemProperties properties = origProperties;
bool allowLockChange;
QUuid senderID;
if (senderNode.isNull()) {
auto nodeList = DependencyManager::get<NodeList>();
allowLockChange = nodeList->getThisNodeCanAdjustLocks();
senderID = nodeList->getSessionUUID();
} else {
allowLockChange = senderNode->getCanAdjustLocks();
senderID = senderNode->getUUID();
}
if (!allowLockChange && (entity->getLocked() != properties.getLocked())) {
qCDebug(entities) << "Refusing disallowed lock adjustment.";
return false;
}
// enforce support for locked entities. If an entity is currently locked, then the only
// property we allow you to change is the locked property.
if (entity->getLocked()) {
if (properties.lockedChanged()) {
bool wantsLocked = properties.getLocked();
if (!wantsLocked) {
EntityItemProperties tempProperties;
tempProperties.setLocked(wantsLocked);
UpdateEntityOperator theOperator(this, containingElement, entity, tempProperties);
recurseTreeWithOperator(&theOperator);
_isDirty = true;
}
}
} else {
if (getIsServer()) {
bool simulationBlocked = !entity->getSimulatorID().isNull();
if (properties.simulatorIDChanged()) {
QUuid submittedID = properties.getSimulatorID();
// a legit interface will only submit their own ID or NULL:
if (submittedID.isNull()) {
if (entity->getSimulatorID() == senderID) {
// We only allow the simulation owner to clear their own simulationID's.
simulationBlocked = false;
}
// else: We assume the sender really did believe it was the simulation owner when it sent
} else if (submittedID == senderID) {
// the sender is trying to take or continue ownership
if (entity->getSimulatorID().isNull() || entity->getSimulatorID() == senderID) {
simulationBlocked = false;
} else {
// the sender is trying to steal ownership from another simulator
// so we apply the ownership change filter
if (usecTimestampNow() - entity->getSimulatorIDChangedTime() > SIMULATOR_CHANGE_LOCKOUT_PERIOD) {
simulationBlocked = false;
}
}
} else {
// the entire update is suspect --> ignore it
return false;
}
}
if (simulationBlocked) {
// squash the physics-related changes.
properties.setSimulatorIDChanged(false);
properties.setPositionChanged(false);
properties.setRotationChanged(false);
}
}
// else client accepts what the server says
QString entityScriptBefore = entity->getScript();
QString collisionSoundURLBefore = entity->getCollisionSoundURL();
uint32_t preFlags = entity->getDirtyFlags();
UpdateEntityOperator theOperator(this, containingElement, entity, properties);
recurseTreeWithOperator(&theOperator);
_isDirty = true;
uint32_t newFlags = entity->getDirtyFlags() & ~preFlags;
if (newFlags) {
if (_simulation) {
if (newFlags & DIRTY_SIMULATION_FLAGS) {
_simulation->lock();
_simulation->changeEntity(entity);
_simulation->unlock();
}
} else {
// normally the _simulation clears ALL updateFlags, but since there is none we do it explicitly
entity->clearDirtyFlags();
}
}
QString entityScriptAfter = entity->getScript();
if (entityScriptBefore != entityScriptAfter) {
emitEntityScriptChanging(entity->getEntityItemID()); // the entity script has changed
}
maybeNotifyNewCollisionSoundURL(collisionSoundURLBefore, entity->getCollisionSoundURL());
}
// TODO: this final containingElement check should eventually be removed (or wrapped in an #ifdef DEBUG).
containingElement = getContainingElement(entity->getEntityItemID());
if (!containingElement) {
qCDebug(entities) << "UNEXPECTED!!!! after updateEntity() we no longer have a containing element??? entityID="
<< entity->getEntityItemID();
return false;
}
return true;
}
void SimpleEntitySimulation::addEntityInternal(EntityItemPointer entity) {
EntitySimulation::addEntityInternal(entity);
if (!entity->getSimulatorID().isNull()) {
_entitiesWithSimulator.insert(entity);
}
}
