Open-source HaxBall implementation with Rust WebSocket server and TypeScript client.

packages/
├── server-rust/    # Rust WebSocket server with physics engine
├── client/         # Browser client with rendering
└── shared/         # Shared TypeScript game logic

• Rust (1.70+)
• Node.js (18+)

# Install dependencies
npm install

# Run both server and client
npm run dev

The Rust server runs on ws://127.0.0.1:3001 and the client dev server runs on http://localhost:8080.

Server only:

npm run dev:server
# Or directly: cd packages/server-rust && cargo run

Client only:

npm run dev:client

• Real-time multiplayer physics
• WebSocket communication with binary protocol
• Collision detection and resolution
• Player movement with keyboard input
• Canvas rendering

Binary WebSocket protocol with MessagePack serialization:

• Join - Client joins room
• Input - Player keyboard state
• GameState - Server broadcasts physics state (60 tick/s)

MIT