static-p2p-pong

A small live demo - Serverless P2P Rollback Netcode running on static GitHub Pages via WebRTC (No Cloudflare, Firebase, Supabase, or db PHP, just PeerJS). Inspired by mitxela's WebRTC, UDP Hole Punching via a STUN server Pong.

⚡ Mechanics & Architecture

• Solves Static-hosting Matchmaking limitation by using Distributed Recursive Lobbies: Recursive logic -> Host Room_N -> (Busy?) -> Join Room_N -> (Timeout?) -> Retry Room_N+1.
• NAT Traversal: STUN stun.l.google.com -> Public IP -> PeerJS Signaling -> UDP Hole Punching -> Direct DataChannel.
• Determinism: Physics rely on integers to prevent desynchronization, predicting and rolling back action when needed:
  • Rollback: Inputs apply instantly (0ms lag) -> Rewinds time when remote data arrives -> Replays physics -> Fast-forwards.
  • Sync: Speed up or slow down the game clock slightly to keep players together (Drift Correction).
• 📦 Modules Structure: NetworkManager: PeerJS lobby & connection, RollbackEngine: Records history snapshots + Rewind logic, PongGame: Integer physics & UI.