pxmlw6n2f/Gazebo_Distributed_TCP/plugins/events/EventSource.hh

111 lines
3.6 KiB
C++

/*
* Copyright (C) 2014 Open Source Robotics Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef _GAZEBO_PLUGIN_EVENTSOURCE_HH_
#define _GAZEBO_PLUGIN_EVENTSOURCE_HH_
#ifdef _WIN32
// Ensure that Winsock2.h is included before Windows.h, which can get
// pulled in by anybody (e.g., Boost).
#include <Winsock2.h>
#endif
#include <string>
#include "gazebo/gazebo.hh"
#include "gazebo/physics/physics.hh"
#include "gazebo/common/common.hh"
#include "gazebo/transport/TransportTypes.hh"
#include "SimEventsException.hh"
namespace gazebo
{
/// \brief The base class for emitting SimEvents
class EventSource
{
/// \brief Constructor
/// \param[in] _pub the publisher where the events are emitted
/// \param[in] _type the type of event
/// \param[in] _world Pointer to the world (in order to get model refs, etc)
public: EventSource(transport::PublisherPtr _pub,
const std::string &_type,
physics::WorldPtr _world);
/// \brief Destructor
public: virtual ~EventSource();
/// \brief emit an event with data to the internal publisher
/// (and using the internal type)
/// \param[in] _data the JSON data related to this event.
public: void Emit(const std::string& _data) const;
/// \brief Load from an sdf element (with possible configuration data)
/// \param[in] _sdf the sdf element for the event in the world file
public: virtual void Load(const sdf::ElementPtr _sdf);
/// \brief Initialize the event
public: virtual void Init();
/// \brief An event source can be used to enable other events. Inactive
/// events do not generate an message when Emit is called.
/// \return true if the event is active
public: virtual bool IsActive() const;
/// \brief Name of the event.
protected: std::string name;
/// \brief Type of event
protected: std::string type;
/// \brief Pointer to the world.
protected: physics::WorldPtr world;
/// \brief True if the event source is active.
/// Inactive event sources do not emit events
protected: bool active;
/// \brief a way to send messages to the other topics (to the REST)
protected: transport::PublisherPtr pub;
};
typedef boost::shared_ptr<EventSource> EventSourcePtr;
/// \brief Gazebo events to detect model creation/deletion
class SimEventConnector
{
/// \brief Connect a boost::slot to the spawn model event
/// \param[in] _subscriber the subscriber to this event
/// \return a connection
public: template<typename T>
static event::ConnectionPtr
ConnectSpawnModel(T _subscriber)
{ return spawnModel.Connect(_subscriber); }
/// \brief Disconnect a boost::slot to the spawn model event
/// \param[in] _subscriber the subscriber to this event
public: static void DisconnectSpawnModel(
event::ConnectionPtr _subscriber)
{ spawnModel.Disconnect(_subscriber); }
/// \brief A model has been completed and uploaded onto the server.
public: static event::EventT<void (std::string, bool)> spawnModel;
};
}
#endif