A new module for the simple message passing system

SimpleMultiplayer.rb

class GameMultiplayer
   include Subscriber
   
   def initialize(repeater)
      @repeater = repeater
      @repeater.subscribe(self)
   end
   
   def accept(message)
      case message[:command]
      when "accept move"
         send_move(message[:color], message[:x], message[:y])
      else
      end
   end
   
   # sends the move to the server
   def send_move(color, x, y)
      puts "#{self.class} sends to server: move(#{color},#{x},#{y})"
   end
end