void SphereEntityItem::recalculateCollisionShape() {
_sphereShape.setTranslation(getCenterInMeters());
glm::vec3 dimensionsInMeters = getDimensionsInMeters();
float largestDiameter = glm::max(dimensionsInMeters.x, dimensionsInMeters.y, dimensionsInMeters.z);
_sphereShape.setRadius(largestDiameter / 2.0f);
}
void BoxEntityItem::computeShapeInfo(ShapeInfo& info) const {
glm::vec3 halfExtents = 0.5f * getDimensionsInMeters();
info.setBox(halfExtents);
}
void SphereEntityItem::computeShapeInfo(ShapeInfo& info) const {
glm::vec3 halfExtents = 0.5f * getDimensionsInMeters();
// TODO: support ellipsoid shapes
info.setSphere(halfExtents.x);
}
int EntityItem::readEntityDataFromBuffer(const unsigned char* data, int bytesLeftToRead, ReadBitstreamToTreeParams& args) {
bool wantDebug = false;
if (args.bitstreamVersion < VERSION_ENTITIES_SUPPORT_SPLIT_MTU) {
// NOTE: This shouldn't happen. The only versions of the bit stream that didn't support split mtu buffers should
// be handled by the model subclass and shouldn't call this routine.
qDebug() << "EntityItem::readEntityDataFromBuffer()... "
"ERROR CASE...args.bitstreamVersion < VERSION_ENTITIES_SUPPORT_SPLIT_MTU";
return 0;
}
// Header bytes
// object ID [16 bytes]
// ByteCountCoded(type code) [~1 byte]
// last edited [8 bytes]
// ByteCountCoded(last_edited to last_updated delta) [~1-8 bytes]
// PropertyFlags<>( everything ) [1-2 bytes]
// ~27-35 bytes...
const int MINIMUM_HEADER_BYTES = 27;
int bytesRead = 0;
if (bytesLeftToRead >= MINIMUM_HEADER_BYTES) {
int originalLength = bytesLeftToRead;
QByteArray originalDataBuffer((const char*)data, originalLength);
int clockSkew = args.sourceNode ? args.sourceNode->getClockSkewUsec() : 0;
const unsigned char* dataAt = data;
// id
QByteArray encodedID = originalDataBuffer.mid(bytesRead, NUM_BYTES_RFC4122_UUID); // maximum possible size
_id = QUuid::fromRfc4122(encodedID);
_creatorTokenID = UNKNOWN_ENTITY_TOKEN; // if we know the id, then we don't care about the creator token
_newlyCreated = false;
dataAt += encodedID.size();
bytesRead += encodedID.size();
// type
QByteArray encodedType = originalDataBuffer.mid(bytesRead); // maximum possible size
ByteCountCoded<quint32> typeCoder = encodedType;
encodedType = typeCoder; // determine true length
dataAt += encodedType.size();
bytesRead += encodedType.size();
quint32 type = typeCoder;
_type = (EntityTypes::EntityType)type;
bool overwriteLocalData = true; // assume the new content overwrites our local data
// _created
quint64 createdFromBuffer = 0;
memcpy(&createdFromBuffer, dataAt, sizeof(createdFromBuffer));
dataAt += sizeof(createdFromBuffer);
bytesRead += sizeof(createdFromBuffer);
createdFromBuffer -= clockSkew;
_created = createdFromBuffer; // TODO: do we ever want to discard this???
if (wantDebug) {
quint64 lastEdited = getLastEdited();
float editedAgo = getEditedAgo();
QString agoAsString = formatSecondsElapsed(editedAgo);
QString ageAsString = formatSecondsElapsed(getAge());
qDebug() << "Loading entity " << getEntityItemID() << " from buffer...";
qDebug() << " _created =" << _created;
qDebug() << " age=" << getAge() << "seconds - " << ageAsString;
qDebug() << " lastEdited =" << lastEdited;
qDebug() << " ago=" << editedAgo << "seconds - " << agoAsString;
}
quint64 now = usecTimestampNow();
quint64 lastEditedFromBuffer = 0;
quint64 lastEditedFromBufferAdjusted = 0;
// TODO: we could make this encoded as a delta from _created
// _lastEdited
memcpy(&lastEditedFromBuffer, dataAt, sizeof(lastEditedFromBuffer));
dataAt += sizeof(lastEditedFromBuffer);
bytesRead += sizeof(lastEditedFromBuffer);
lastEditedFromBufferAdjusted = lastEditedFromBuffer - clockSkew;
bool fromSameServerEdit = (lastEditedFromBuffer == _lastEditedFromRemoteInRemoteTime);
if (wantDebug) {
qDebug() << "data from server **************** ";
qDebug() << " entityItemID=" << getEntityItemID();
qDebug() << " now=" << now;
qDebug() << " getLastEdited()=" << getLastEdited();
qDebug() << " lastEditedFromBuffer=" << lastEditedFromBuffer << " (BEFORE clockskew adjust)";
qDebug() << " clockSkew=" << clockSkew;
qDebug() << " lastEditedFromBufferAdjusted=" << lastEditedFromBufferAdjusted << " (AFTER clockskew adjust)";
qDebug() << " _lastEditedFromRemote=" << _lastEditedFromRemote
<< " (our local time the last server edit we accepted)";
qDebug() << " _lastEditedFromRemoteInRemoteTime=" << _lastEditedFromRemoteInRemoteTime
<< " (remote time the last server edit we accepted)";
qDebug() << " fromSameServerEdit=" << fromSameServerEdit;
}
bool ignoreServerPacket = false; // assume we're use this server packet
// If this packet is from the same server edit as the last packet we accepted from the server
// we probably want to use it.
if (fromSameServerEdit) {
// If this is from the same sever packet, then check against any local changes since we got
// the most recent packet from this server time
if (_lastEdited > _lastEditedFromRemote) {
ignoreServerPacket = true;
}
} else {
// If this isn't from the same sever packet, then honor our skew adjusted times...
// If we've changed our local tree more recently than the new data from this packet
// then we will not be changing our values, instead we just read and skip the data
if (_lastEdited > lastEditedFromBufferAdjusted) {
ignoreServerPacket = true;
}
}
if (ignoreServerPacket) {
overwriteLocalData = false;
if (wantDebug) {
qDebug() << "IGNORING old data from server!!! ****************";
}
} else {
if (wantDebug) {
qDebug() << "USING NEW data from server!!! ****************";
}
_lastEdited = lastEditedFromBufferAdjusted;
_lastEditedFromRemote = now;
_lastEditedFromRemoteInRemoteTime = lastEditedFromBuffer;
somethingChangedNotification(); // notify derived classes that something has changed
}
// last updated is stored as ByteCountCoded delta from lastEdited
QByteArray encodedUpdateDelta = originalDataBuffer.mid(bytesRead); // maximum possible size
ByteCountCoded<quint64> updateDeltaCoder = encodedUpdateDelta;
quint64 updateDelta = updateDeltaCoder;
if (overwriteLocalData) {
_lastUpdated = lastEditedFromBufferAdjusted + updateDelta; // don't adjust for clock skew since we already did that for _lastEdited
if (wantDebug) {
qDebug() << "_lastUpdated=" << _lastUpdated;
qDebug() << "_lastEdited=" << _lastEdited;
qDebug() << "lastEditedFromBufferAdjusted=" << lastEditedFromBufferAdjusted;
}
}
encodedUpdateDelta = updateDeltaCoder; // determine true length
dataAt += encodedUpdateDelta.size();
bytesRead += encodedUpdateDelta.size();
// Property Flags
QByteArray encodedPropertyFlags = originalDataBuffer.mid(bytesRead); // maximum possible size
EntityPropertyFlags propertyFlags = encodedPropertyFlags;
dataAt += propertyFlags.getEncodedLength();
bytesRead += propertyFlags.getEncodedLength();
READ_ENTITY_PROPERTY(PROP_POSITION, glm::vec3, _position);
// Old bitstreams had PROP_RADIUS, new bitstreams have PROP_DIMENSIONS
if (args.bitstreamVersion < VERSION_ENTITIES_SUPPORT_DIMENSIONS) {
if (propertyFlags.getHasProperty(PROP_RADIUS)) {
float fromBuffer;
memcpy(&fromBuffer, dataAt, sizeof(fromBuffer));
dataAt += sizeof(fromBuffer);
bytesRead += sizeof(fromBuffer);
if (overwriteLocalData) {
setRadius(fromBuffer);
}
if (wantDebug) {
qDebug() << " readEntityDataFromBuffer() OLD FORMAT... found PROP_RADIUS";
}
}
} else {
READ_ENTITY_PROPERTY(PROP_DIMENSIONS, glm::vec3, _dimensions);
if (wantDebug) {
qDebug() << " readEntityDataFromBuffer() NEW FORMAT... look for PROP_DIMENSIONS";
}
}
if (wantDebug) {
qDebug() << " readEntityDataFromBuffer() _dimensions:" << getDimensionsInMeters() << " in meters";
}
READ_ENTITY_PROPERTY_QUAT(PROP_ROTATION, _rotation);
READ_ENTITY_PROPERTY(PROP_MASS, float, _mass);
READ_ENTITY_PROPERTY(PROP_VELOCITY, glm::vec3, _velocity);
READ_ENTITY_PROPERTY(PROP_GRAVITY, glm::vec3, _gravity);
READ_ENTITY_PROPERTY(PROP_DAMPING, float, _damping);
READ_ENTITY_PROPERTY(PROP_LIFETIME, float, _lifetime);
READ_ENTITY_PROPERTY_STRING(PROP_SCRIPT,setScript);
READ_ENTITY_PROPERTY(PROP_REGISTRATION_POINT, glm::vec3, _registrationPoint);
READ_ENTITY_PROPERTY(PROP_ANGULAR_VELOCITY, glm::vec3, _angularVelocity);
READ_ENTITY_PROPERTY(PROP_ANGULAR_DAMPING, float, _angularDamping);
READ_ENTITY_PROPERTY(PROP_VISIBLE, bool, _visible);
READ_ENTITY_PROPERTY(PROP_IGNORE_FOR_COLLISIONS, bool, _ignoreForCollisions);
READ_ENTITY_PROPERTY(PROP_COLLISIONS_WILL_MOVE, bool, _collisionsWillMove);
if (wantDebug) {
qDebug() << " readEntityDataFromBuffer() _registrationPoint:" << _registrationPoint;
qDebug() << " readEntityDataFromBuffer() _visible:" << _visible;
qDebug() << " readEntityDataFromBuffer() _ignoreForCollisions:" << _ignoreForCollisions;
qDebug() << " readEntityDataFromBuffer() _collisionsWillMove:" << _collisionsWillMove;
}
bytesRead += readEntitySubclassDataFromBuffer(dataAt, (bytesLeftToRead - bytesRead), args, propertyFlags, overwriteLocalData);
recalculateCollisionShape();
}
return bytesRead;
}
