node-minecraft-protocol/examples/server.js

var mc = require('../');

var yellow = '§e';
var players = [];

var options = {
  'online-mode': false,
  motd: 'Vox Industries',
  'max-players': 127,
  port: 25565,
};

var server = mc.createServer(options);

server.on('login', function(client) {
  var player = {
    client: client,
    username: client.username,
    index: players.length
  };
  players.push(player);
  server.players = players.length;

  broadcast(yellow + player.username+' joined the game.');
  var addr = client.socket.remoteAddress + ':' + client.socket.remotePort;
  console.log(player.username+' connected', '('+addr+')');

  client.on('end', function() {
    players.splice(player.index, 1);
    server.players = players.length;

    broadcast(yellow + player.username+' left the game.', player);
    console.log(player.username+' disconnected', '('+addr+')');
  });

  // send init data so client will start rendering world
  client.write(0x01, {
    entityId: 0,
    levelType: 'default',
    gameMode: 1,
    dimension: 0,
    difficulty: 2,
    maxPlayers: server.maxPlayers
  });
  client.write(0x0d, {
    x: 0,
    y: 256,
    stance: 255,
    z: 0,
    yaw: 0,
    pitch: 0,
    onGround: true
  });

  client.on(0x03, function(data) {
    var message = '<'+player.username+'>' + ' ' + data.message;
    broadcast(message);
    console.log(message);
  });
});

server.on('error', function(error) {
	console.log('Error:', error);
});

server.on('listening', function() {
	console.log('Server listening on port', server.socket.address().port);
});

function broadcast(message, exclude) {
	for(var i = 0; i < players.length; i++) {
		if(players[i].username !== exclude && i !== exclude && players[i] !== exclude) {
			players[i].client.write(0x03, { message: message });
		}
	}
}