////  ObjectAction.cpp//  libraries/physics/src////  Created by Seth Alves 2015-6-2//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "ObjectAction.h" #include "EntitySimulation.h" #include "PhysicsLogging.h"  ObjectAction::ObjectAction(EntityDynamicType type, const QUuid& id, EntityItemPointer ownerEntity) :    btActionInterface(),    ObjectDynamic(type, id, ownerEntity){} void ObjectAction::updateAction(btCollisionWorld* collisionWorld, btScalar deltaTimeStep) {    quint64 expiresWhen = 0;    EntityItemPointer ownerEntity = nullptr;     withReadLock([&]{        ownerEntity = _ownerEntity.lock();        expiresWhen = _expires;    });     if (!ownerEntity) {        qCDebug(physics) << "warning -- action [" << _tag << "] with no entity removing self from btCollisionWorld.";        btDynamicsWorld* dynamicsWorld = static_cast<btDynamicsWorld*>(collisionWorld);        if (dynamicsWorld) {            dynamicsWorld->removeAction(this);        }        return;    }     if (expiresWhen > 0) {        quint64 now = usecTimestampNow();        if (now > expiresWhen) {            QUuid myID;            withWriteLock([&]{                _active = false;                myID = getID();            });            if (ownerEntity) {                ownerEntity->removeAction(nullptr, myID);            }        }    }     if (!_active) {        return;    }     if (ownerEntity->getLocked()) {        return;    }     updateActionWorker(deltaTimeStep);} void ObjectAction::debugDraw(btIDebugDraw* debugDrawer) {}