// This is the basic setup for a real-time multiplayer Ludo game // using JavaScript, Socket.io and Node.js (backend), with fancy frontend (React optional) // ==== BACKEND (Node.js + Socket.io) ==== // Save this as server.js const express = require('express'); const http = require('http'); const socketIo = require('socket.io'); const cors = require('cors'); const app = express(); app.use(cors()); const server = http.createServer(app); const io = socketIo(server, { cors: { origin: '*' } }); let rooms = {}; io.on('connection', (socket) => { console.log('New client connected:', socket.id); socket.on('createRoom', () => { const roomId = Math.random().toString(36).substr(2, 6); rooms[roomId] = [socket.id]; socket.join(roomId); socket.emit('roomCreated', roomId); }); socket.on('joinRoom', (roomId) => { if (rooms[roomId] && rooms[roomId].length { con...