run.js

const http = require('http');
var finalhandler = require('finalhandler');
var serveStatic = require('serve-static');
var opn = require('opn');

var socketPort=35565;
var serverPort=8080;

//Socketio
var server1 = http.createServer();
var io = require("socket.io")(server1);
var world={};
startUp();
function startUp(){
  var vari=50
  for (let y = 0; y < vari; ++y) {
    for (let z = 0; z < vari; ++z) {
      for (let x = 0; x < vari; ++x) {
        const height = (Math.sin(x / vari * Math.PI * 2) + Math.sin(z / vari * Math.PI * 3)) * (vari / 6) + (vari / 2);
        if (y < height) {
          world[`${x}:${y}:${z}`]=2;
        }
      }
    }
  }
}

var players={};

io.sockets.on("connection", function(socket) {
  console.log("User connected: "+socket.id)
  socket.on("playerUpdate",function (data){
    players[socket.id]=data
    io.sockets.emit("playerUpdate",players)
  })
  socket.emit("firstLoad",world)
  socket.on("blockUpdate",function (block){
    block[0]=Math.floor(block[0])
    block[1]=Math.floor(block[1])
    block[2]=Math.floor(block[2])
    world[`${block[0]}:${block[1]}:${block[2]}`]=block[3];
    if(block[3]==0){
      delete world[`${block[0]}:${block[1]}:${block[2]}`]
      console.log("Block removed",`${block[0]}:${block[1]}:${block[2]}`)
    }else{
      console.log("Block placed",`${block[0]}:${block[1]}:${block[2]}`)
    }
    io.sockets.emit("blockUpdate",block)
  })
  socket.on("disconnect", function() {
    console.log("User disconnected: " + socket.id);
    delete players[socket.id]
  });
});//

server1.listen(socketPort);

//Webserver
var serve = serveStatic(__dirname+"/../");

var server2 = http.createServer(function(req, res) {
  var done = finalhandler(req, res);
  serve(req, res, done);
});

server2.listen(serverPort,function (){
  opn(`http://localhost:${serverPort}`)
});