gz/sim/Entity.hh

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/*
 * Copyright (C) 2018 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 GZ_SIM_ENTITY_HH_
#define GZ_SIM_ENTITY_HH_
 
#include <cstdint>
#include <gz/sim/config.hh>
#include <gz/sim/Export.hh>
 
namespace gz
{
  namespace sim
  {
    // Inline bracket to help doxygen filtering.
    inline namespace GZ_SIM_VERSION_NAMESPACE {
    // Adding component namespace information here because there is
    // currently no one component class that seems like a good place to hold
    // this documentation.
    namespace components {}
 
    using Entity = uint64_t;
 
    const Entity kNullEntity{0};
    }
  }
}
#endif