This project implements a multiplayer Chess Game using Node.js, Socket.IO, and the Chess.js library for managing chess game logic. Below is an overview of the functionality and how the project is structured.
Real-time Multiplayer: Supports two players (White and Black) playing against each other in real-time. Spectator Mode: Additional connections are assigned spectator roles and can view the game. Valid Move Enforcement: Uses the Chess.js library to ensure only valid chess moves are allowed. Persistent Game State: The game state is synchronized across all connected clients using Socket.IO. Role Assignment: Dynamically assigns roles (White, Black, Spectator) based on connection order.
Node.js: Backend runtime environment. Socket.IO: Real-time bidirectional communication for multiplayer functionality. Chess.js: Handles chess game logic and validation. EJS: Templating engine for rendering the UI. Express: Web framework for handling HTTP requests. HTML/CSS/JS: Frontend for user interface
. ├── public/ │ └── Static assets (e.g., CSS, JS for the frontend) ├── views/ │ └── index.ejs (HTML template for the game interface) ├── app.js (Main server-side code) ├── package.json (Dependencies and scripts)
Creates an HTTP server using Node.js and sets up Socket.IO for real-time communication. The Chess.js library is instantiated to manage the chess board state and validate moves.
When a user connects: First player is assigned the White role. Second player is assigned the Black role. Additional users are assigned the Spectator role.
Players can make moves via the frontend interface. The server validates each move using the Chess.js library: Only the current turn's player can move. Moves must adhere to chess rules (e.g., valid piece movement, no self-check). Valid moves update the board state and broadcast the new state to all clients. Invalid moves send an error notification to the player who attempted the move.
Displays the chessboard and allows players to interact with it. Reflects real-time updates using Socket.IO.
git clone cd chess-game
npm install
node app.js