ActorList.h

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// Copyright (c) 2017 Computer Vision Center (CVC) at the Universitat Autonoma
// de Barcelona (UAB).
//
// This work is licensed under the terms of the MIT license.
// For a copy, see <https://opensource.org/licenses/MIT>.
 
#pragma once
 
#include "carla/client/detail/ActorVariant.h"
 
#include <boost/iterator/transform_iterator.hpp>
 
#include <vector>
 
namespace carla {
namespace client {
 
  class ActorList : public EnableSharedFromThis<ActorList> {
  private:
 
    template <typename It>
    auto MakeIterator(It it) const {
      return boost::make_transform_iterator(it, [this](auto &v) {
        return v.Get(_episode);
      });
    }
 
  public:
 
    /// Find an actor by id.
    SharedPtr<Actor> Find(ActorId actor_id) const;
 
    /// Filters a list of Actor with type id matching @a wildcard_pattern.
    SharedPtr<ActorList> Filter(const std::string &wildcard_pattern) const;
 
    SharedPtr<Actor> operator[](size_t pos) const {
      return _actors[pos].Get(_episode);
    }
 
    SharedPtr<Actor> at(size_t pos) const {
      return _actors.at(pos).Get(_episode);
    }
 
    auto begin() const {
      return MakeIterator(_actors.begin());
    }
 
    auto end() const {
      return MakeIterator(_actors.end());
    }
 
    bool empty() const {
      return _actors.empty();
    }
 
    size_t size() const {
      return _actors.size();
    }
 
  private:
 
    friend class World;
 
    ActorList(detail::EpisodeProxy episode, std::vector<rpc::Actor> actors);
 
    detail::EpisodeProxy _episode;
 
    std::vector<detail::ActorVariant> _actors;
  };
 
} // namespace client
} // namespace carla