old Boxors.io server

var WebSocket = require("ws");
var port = process.env.PORT; // don't change

var wss = new WebSocket.Server({
  port: port
});

var userCount=0
var IPList=[]

var levels = require("./levels.json");
var levelsRender = require("./levelsr.json");
var ids = 1;
var players = [
  [],
  [],
  [],
  [],
  [],
  [],
  [],
  [],
  [],
  []
];
function nextLvl(ws,rqLvl,rqX,rqY){
  players[ws.level][ws.id-1]=null
        ws.level=rqLvl
        ws.send(
          JSON.stringify({
            kind: "levelRender",
            collisions: levels[ws.level],
            render: levelsRender[ws.level],
            "players":players[ws.level]
          })
        );
        ws.posX=rqX;
        ws.posY=rqY;
        ws.send(JSON.stringify({
          "kind":"clientPosUpdate",
          "data":[ws.posX,ws.posY]
        }));
        wss.clients.forEach(function each(client) {
          client.send(JSON.stringify({kind: "disconnection", id: ws.id}));
        });
}
wss.on("connection", function(ws, req) {
  if(IPList.includes(req.headers['x-forwarded-for'].split(",")[0])){/*
    ws.send(JSON.stringify({
      "kind":"error",
      "message":"You have reached the IP limit."
    }));
    console.log("someone tried to have 2 connections.")
    ws.close();
    return*/
  };
  IPList[ids]=req.headers['x-forwarded-for'].split(",")[0];
  ws.level = 0;
  ws.posX = 400;
  ws.posY = 300;
  ws.id = ids;
  ids++;
  ws.clickRegulator=true
  wss.clients.forEach(function each(client) {
    if(client!=ws && client.level==0){
      client.send(JSON.stringify({ kind: "userMove", id: ws.id, X: ws.posX, Y: ws.posY }));
    }
  });
  ws.on("error", function(err) {});
  ws.on("close", function(cls) {
    userCount-=1;
    IPList[ws.id]=undefined
    wss.clients.forEach(function each(client) {
      client.send(JSON.stringify({kind: "disconnection", id: ws.id}));
      client.send(JSON.stringify({"kind":"userCountUpdate","count":userCount}));
    });
    players[ws.level][ws.id-1]=null
  });
  ws.on("message", async function(msg) {
    var data = JSON.parse(String(msg));
    if (data.kind == "move") {
      switch (data.direction) {
        case "left":
          var cl=ws.posX-20
          if (ws.posX > 0 && !levels[ws.level].includes(cl+","+ws.posY)) {ws.posX -= 20};
          break;
        case "up":
          var cu=ws.posY-20
          if (ws.posY > 0 && !levels[ws.level].includes(ws.posX+","+cu)) {ws.posY -= 20};
          break;
        case "right":
          var cr=ws.posX+20
          if (ws.posX < 780 && !levels[ws.level].includes(cr+","+ws.posY)) {ws.posX += 20};
          break;
        case "down":
          var cd=ws.posY+20
          if (ws.posY < 580 && !levels[ws.level].includes(ws.posX+","+cd)) {ws.posY += 20};
          break;
      };
      if(ws.posX<0){ws.posX=0} else if(ws.posY<0){ws.posY=0} else if(ws.posX>780){ws.posX=780} else if(ws.posY>580){ws.posY=580}
      //destinations
      if(ws.posX>599 && ws.posX<681 && ws.posY>339 && ws.posY<441 && ws.level==0){
        nextLvl(ws,1,400,300)
      };
      if(ws.posX>-1 && ws.posX<61 && ws.posY>-1 && ws.posY<61 && ws.level==0){
        nextLvl(ws,9,400,300)
      };
      if(ws.posX>-1 && ws.posX<41 && ws.posY>-1 && ws.posY<41 && ws.level==9){
        nextLvl(ws,1,400,300)
      };
      if(ws.posX>-1 && ws.posX<61 && ws.posY>-1 && ws.posY<61 && ws.level==1){
        nextLvl(ws,2,400,300)
      };
      if(ws.posX>719 && ws.posX<781 && ws.posY>-1 && ws.posY<61 && ws.level==2){
        nextLvl(ws,0,80,0)
      };
      wss.clients.forEach(function each(client) {
        if(client!=ws && client.level==ws.level){
          client.send(JSON.stringify({ kind: "userMove", id: ws.id, X: ws.posX, Y: ws.posY }));
        }
      });
      players[ws.level][ws.id-1]=[ws.posX,ws.posY,ws.id]
      ws.send(JSON.stringify({kind:"clientMove", id: ws.id, X: ws.posX, Y: ws.posY}))
      if(true){}
    };
    if(data.kind == "click" && ws.clickRegulator){
      wss.clients.forEach(function each(client) {
        if(client.level==ws.level){
          client.send(JSON.stringify({ kind: "click", X: ws.posX, Y: ws.posY }));
        }
      });
      if(ws.posX==400 && ws.posY==300 && ws.level==9){
        levelsRender[ws.level]["button"][0][4]--;
        wss.clients.forEach(function each(client) {
          if(client.level==ws.level){
            client.send(
              JSON.stringify({
                kind: "levelRender",
                collisions: levels[ws.level],
                render: levelsRender[ws.level],
                "players":players[client.level]
              })
            );
          }
        });
      };
      ws.clickRegulator=false;
      setTimeout(function(){ws.clickRegulator=true},250)
    }
  });
  userCount+=1;
  wss.clients.forEach(function each(client) {
    client.send(JSON.stringify({
      "kind":"userCountUpdate",
      "count":userCount
    }));
  });
  ws.send(JSON.stringify({
    "kind":"clientPosUpdate",
    "data":[ws.posX,ws.posY]
  }));
  ws.send(JSON.stringify({ kind: "id", id: ws.id }));
  ws.send(
    JSON.stringify({
      kind: "levelRender",
      collisions: levels[ws.level],
      render: levelsRender[ws.level],
      "players":players[ws.level]
    })
  );
});