Deterministic Rollback Netcode & Frame Resimulation Engine

Headless GGPO-style rollback netcode in pure Python 3.10+ stdlib. 351 automated tests passing.

Production-ready deterministic GGPO-style rollback netcode and resimulation engine written entirely in native Python 3.10+ standard library. Features circular frame state buffers, Markov and repeat input predictors, sub-millisecond multi-frame rollbacks, CRC32 and SHA-256 canonical state checksumming, and a synthetic network simulator injecting realistic ping, jitter, and packet drop rates.

• Circular State & Input Ring Buffer (Deterministic Ring Store)
• GGPO-Style Frame Resimulation & Instant Rollback Rewind
• Markov & Repeat-Last-Input Prediction Models
• Canonical State Checksumming (CRC32 & SHA-256 Desync Guard)
• Built-in Virtual Latency Simulator (Ping, Jitter, Packet Drop)
• Exhaustive 351 Automated Pytests Suite (100% Green)
• Zero External Dependencies (Native Python 3.10+ Stdlib)
• 100% Royalty-Free Commercial License