ppovb5fc7/gazebo/plugins/events/SimStateEventSource.hh

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2019-03-25 11:01:43 +08:00
/*
* 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 _SIMSTATE_EVENTSOURCE_HH_
#define _SIMSTATE_EVENTSOURCE_HH_
#include "EventSource.hh"
namespace gazebo
{
/// \brief SimEvent that fires when the simulation is paused/resumed
class SimStateEventSource: public EventSource
{
/// \brief Constructor
/// \param[in] _pub publisher for the SimEvents
/// \param[in] _world pointer to the world.
public: SimStateEventSource(transport::PublisherPtr _pub,
physics::WorldPtr _world);
/// \brief Dtor
public: virtual ~SimStateEventSource();
/// \brief Load the name of the event from the world file
/// \param[in] _sdf the event element in the world file
public: virtual void Load(const sdf::ElementPtr _sdf);
/// \brief Update for every time step
/// \param[in] _info Update information provided by the server.
public: virtual void OnUpdate(const common::UpdateInfo &_info);
/// \brief Callback for the pause event
/// \param[in] _p true if the sim has been paused
public: void OnPause(bool _p);
/// brief True if the simulation is paused.
private: bool hasPaused;
/// \brief Pointer to the Gazebo pause event connection
private: event::ConnectionPtr pauseConnection;
/// \brief Pointer to the update event connection
private: event::ConnectionPtr updateConnection;
/// \brief Simulation time at the previous step
private: common::Time simTime;
};
}
#endif