Game: Left 4 Dead, Left 4 Dead 2
Type: AI Pathfinding System / SourceMod Extension
Ecosystem: Server-side Addon (Left 4 Dead Multiplayer Servers)
Developer: Justin Chellah

Role: AI Engineer
Engine: Source
Language: C++,SourcePawn
Tools: BinTools, NextBot SDK, IDA Pro

Source Code: GitHub

I created this extension to give developers enhanced control over survivor bot pathfinding. The video shows the bot avoiding “AVOID” nav areas, which is the extension’s default behavior. It also includes an API for developers to easily build plugins that alter pathfinding behavior.