A cheap SCVNGR clone to try out node.js

dnmrrck.js

// config variables
var port = 8090,
    host = "localhost";

// define the clues and answers
var clues = ['What is the most beautiful programming language?',
             'That\'s right! What is the greatest city in the USA?',
             'Perfect! Who makes the best online scavenger hunts?'],

  answers = ['Ruby',
             'Boston',
             'SCVNGR'],

    wrong = 'Sorry, try again!',

 finished = 'Congratulations! You win!';


// current clue
var question;

// required libraries
var net = require('net'),
    sys = require('sys');

// create the server
var server = net.createServer(function (socket) {

  socket.setEncoding("utf8");

  socket.addListener("connect", function () {

    question = 0;

    sys.puts(new Date().toGMTString() + ": New user has connected!");

    // send welcome message to the user
    socket.write("\r\n");
    socket.write("Welcome to DNMRRCK.\r\n");
    socket.write("The online, telnet-based scavenger hunt!\r\n");
    socket.write("\r\n");
    socket.write(clues[question] + "\r\n");
    socket.write("> ");

  });

  socket.addListener("data", function (data) {

    var response = data.substring(0, data.length - 2).toLowerCase();

    if (response == answers[question].toLowerCase()) {
      question++;

      if (question < answers.length) {
        socket.write(clues[question]);

      } else { // we're out of questions
        socket.write(finished + "\r\n\r\n");
        sys.puts(new Date().toGMTString() + ": A user has finished the game!");
        socket.end();
        return;
      }

    } else { // the user got it wrong
      socket.write(wrong);
    }

    socket.write("\r\n");
    socket.write("> ");
  });

  socket.addListener("end", function () {
    sys.puts(new Date().toGMTString() + ": A user disconnected.");
    socket.end();
  });

});

// let's start this thing!
server.listen(port, host);
sys.puts('Server running on ' + host + " at port " + port + ".");