class GameEngine
{
  bool spawn(const std::string& name, PlayerCtrl* player_ctrl);
  void despawn(CreatureId creature_id);
  void move(CreatureId creature_id, Direction direction);
  void movePath(CreatureId creature_id, std::deque<Direction>&& path);
  void cancelMove(CreatureId creature_id);
  void turn(CreatureId creature_id, Direction direction);
  void moveItem(CreatureId creature_id, const ItemPosition& from_position, const GamePosition& to_position, int count);
  void useItem(CreatureId creature_id, const ItemPosition& position, int new_container_id);
  void closeContainer(CreatureId creature_id, ItemUniqueId item_unique_id);
  void openParentContainer(CreatureId creature_id, ItemUniqueId item_unique_id, int new_container_id);
};
#include <sstream>
#include <boost/asio.hpp>