gistfile1.rb

  roles = {
      spectator: [:send_message],
      memeber: [:send_message, :change_slot],
      captain: [:send_message, :change_slot, :start_game]
  }
  
  
  def send_message(options={})
    message = options[:message]
    party = options[:party]
    role = self.current_role(party)
    if checkIfValidAction(role, #???)
      #.....
    end
  end
  
  def checkIfValidAction(party, action)
    #????????
  end

roles.include?(options[:action])