main.rb

require "socket"

server = TCPServer.open("127.0.0.1", 50000);

puts "Server is running at 50000."

loop {
  begin
    parent = server.accept();
    puts("Parent come\n");
    parent.write("welcome\n");

    child = server.accept();
    puts("Child come\n");

    time = Time.now.to_i + 3;

    parent.write("start,#{time}\nisParent\n");
    child.write("welcome\nstart,#{time}\n");

    threads = Array.new();

    threads << Thread.new {
      loop {
        message = parent.gets();

        if (message.nil?())
          break;
        end

        puts("parent: #{message}");
        args = message.chop().split(",");

        if (args[0] == "move")
          parent.write("parent," + args[1] + "\n");
          child.write("parent," + args[1] + "\n");
        elsif (args[0] == "goal")
          parent.write("goal\n");
          child.write("goal\n");
        end
      }
    }

    threads << Thread.new {
      loop {
        message = child.gets();

        if (message.nil?())
          break;
        end

        puts("child: #{message}");
        args = message.split(",");

        if (args[0] == "move")
          parent.write("child," + args[1]);
          child.write("child," + args[1]);
        end
      }
    }

    threads.each { |thread|
      thread.join();
    }
  rescue
    parent.close();
    child.close();
    puts("Game End");
  end
}