This repository contains a small demo of a quake-style multiplayer FPS that integrates a number of modern netcode techniques for quality of gameplay.

Features:

• Client-side prediction of player entities
• Client-side interpolation of remote entities
• Backwards reconciliation and replay
• Real-time adjustment of client simulation speed to optimize server's input buffer (Overwatch's method).
• Server-side lag compensation
• Hitscan weapons
• (TODO) Projectile weapons
• Master server to manage discovery and connection (via hotel)

References & Research:

• Quake 3 Networking Code Review
• Quake 3 Network Protocol
• Client-Side Prediction With Physics in Unity
• Gaffer On Games Networking
• Unreal Networking Overview
• Gabriel Gambetta Fast-Paced Multiplayer
• Overwatch Gameplay Architecture & Netcode
• TinyBirdNet
• https://www.gamedev.net/forums/topic/696756-command-frames-and-tick-synchronization/

Architecture:

TODO