app.js

const express = require("express");
const app = express();
const serv = require("http").Server(app);

app.get("/", (req, res) =>
    res.sendFile(__dirname + "/client/index.html"));
app.use("/client", express.static(__dirname + "/client"));

app.get("/ajaxcall", (req, res) => {
    let map = {
        "roomName": "startRoom",
        "outside": true,
        "obstacles": [
            ["tree",
                [3, 2],
                [1, 1],
                [2, 2],
                [1, 3],
                [1, 4]
            ],
            ["stone",
                [4, 4],
                [8, 9],
                [5, 4],
                [6, 4]
            ],
            ["chest",
                [9, 9]
            ]
        ],
        "entryPoint": [
            0,
            13
        ],
        "exitPoint": [
            14,
            14
        ]
    };
    res.send(map);
});

/* const roomClass = require("./client/js/Room.js");
const Room = new roomClass(); */

serv.listen(2000);
console.log("Server started");


let SOCKET_LIST = {};

// Character to be replaced by original Class
//
let Character = function () {
    let self = {
        x: 250,
        y: 250,
        id: "",
        spdX: 0,
        spdY: 0,
    }
    self.update = () => self.updatePos()

    self.updatePos = () => {
        self.x += self.spdX;
        self.y += self.spdY;
    }

    return self;
}

// Player to be replaced by original Class
//
let Player = function (id) {
    let self = Character();
    self.id = id;
    self.number = "" + Math.floor(10 * Math.random());
    self.pressingRight = false;
    self.pressingLeft = false;
    self.pressingUp = false;
    self.pressingDown = false;
    self.maxSpd = 10;

    let super_update = self.update;
    self.update = () => {
        self.updateSpd();
        super_update();
    }

    self.updateSpd = () => {
        if (self.pressingRight) {
            self.spdX += self.maxSpd;
        } else if (self.pressingLeft) {
            self.spdX -= self.maxSpd;
        } else {
            self.spdX = 0;
        }

        if (self.pressingUp) {
            self.spdY -= self.maxSpd;
        } else if (self.pressingDown) {
            self.spdY += self.maxSpd;
        } else {
            self.spdY = 0;
        }

    }

    Player.list[id] = self;
    return self;
}

Player.list = {};
Player.onConnect = (socket) => {
    let player = Player(socket.id);

    // get key Press/Release Data
    socket.on("keyPress", (data) => {
        if (data.inputId === "right")
            player.pressingRight = data.state;
        else if (data.inputId === "left")
            player.pressingLeft = data.state;
        else if (data.inputId === "up")
            player.pressingUp = data.state;
        else if (data.inputId === "down")
            player.pressingDown = data.state;
    });
}

Player.onDisconnect = (socket) => delete Player.list[socket.id];

Player.update = () => {
    let playerInfo = [];
    for (let i in Player.list) {
        let player = Player.list[i];
        player.updatePos();
        playerInfo.push({
            x: player.x,
            y: player.y,
            number: player.number
        });
    }
    return playerInfo;
}

let io = require("socket.io")(serv, {});
io.sockets.on("connection", (socket) => {

    socket.id = Math.floor(10 * Math.random());
    SOCKET_LIST[socket.id] = socket;


    console.log("User connected");



    // Deletes Socket on DC
    socket.on("disconnect", () => {
        delete SOCKET_LIST[socket.id];
       Player.onDisconnect(socket);
    });


    /* For Copy
        socket.on("", () =>{

        });

        socket.emit("msg", {

        });
     */

});


// GAME LOOP
setInterval(() => {
    let = playerInfo = Player.update();
    for (let i in SOCKET_LIST) {
        let socket = SOCKET_LIST[i];
        socket.emit("newPos", playerInfo);
    }


}, 1000 / 25);