🌐 Building a Multiplayer Game with WebSockets

WebSockets enable real-time, bidirectional communication between clients and servers. Perfect for multiplayer games where every millisecond counts.

Why WebSockets?

HTTP is request-response — the client asks, the server answers. WebSockets keep a persistent connection open. Both sides can send messages anytime. Low latency, real-time updates.

Setting Up the Server

Use Node.js with the 'ws' library. Create a WebSocket server that listens for connections. Each connected player gets a unique ID.

Game State Synchronization

The server is the source of truth. Clients send inputs (move, shoot, jump), the server processes them, updates the game state, and broadcasts to all clients.

Handling Lag

Implement client-side prediction — show the player's movement immediately while waiting for server confirmation. Use interpolation for other players' movements.

Anti-Cheat

Never trust the client. Validate all inputs on the server. Check speed, position, and timing. Disconnect cheaters automatically.