so_5/hello_evt_handler/main.cpp

/*
 * A sample of a simple agent which send message to itself.
 */
 
#include <iostream>
 
// Main SObjectizer header files.
#include <so_5/all.hpp>
 
// An agent class definition.
class a_hello_t final : public so_5::agent_t
{
  public:
    using so_5::agent_t::agent_t;
 
    // Definition of an agent for SObjectizer.
    void so_define_agent() override
    {
      // The hello message subscription.
      so_subscribe_self().event( &a_hello_t::evt_hello );
    }
 
    // A reaction to start of work in SObjectizer.
    void so_evt_start() override
    {
      // Send hello message.
      so_5::send< std::string >( *this, "Hello, world! This is SObjectizer-5.");
    }
 
  private :
    // Hello message handler.
    void evt_hello( const std::string & msg )
    {
      std::cout << msg << std::endl;
 
      // Shutting down SObjectizer.
      so_environment().stop();
    }
};
 
int main()
{
  try
  {
    so_5::launch(
      []( so_5::environment_t & env )
      {
        env.register_agent_as_coop( env.make_agent< a_hello_t >() );
      } );
  }
  catch( const std::exception & ex )
  {
    std::cerr << "Error: " << ex.what() << std::endl;
    return 1;
  }
 
  return 0;
}