GOAP: Enemies that Actually Plan - Lambda Engine

[u/XBLAH_]

https://www.youtube.com/watch?v=MazYoB6RBIQ

We are implementing Goal-Oriented Action Planning (GOAP) in Lambda Engine, the same technique that made F.E.A.R.'s soldiers the high-water mark for FPS enemy AI. Instead of a scripted state machine deciding what an enemy does next, each soldier holds a goal and searches for a sequence of actions that satisfies it, using whatever the world happens to offer.

* They react to the environment, not the player. Cover, doorways, flanking routes and blocked paths drive their decisions. Nothing is hand-authored per encounter.

* Squad coordination without central control. There is no commander AI issuing orders. Coordinated suppression and flanking emerge from individual agents planning against a shared world state.

* The illusion of intelligence via speech. Barks announce intent out loud, so you hear the plan before you see it. That's what makes the AI read as smart instead of just being smart.

* Performance-tuned "dumbness". Planning is expensive, so the search is deliberately bounded. Knowing where to make the AI worse is most of the work.

F.E.A.R. peaked enemy AI, and I'm reproducing that with Lambda Engine.

This project is built entirely by fans, for fans, it's free but it eats time. If you want to see more enemies, more systems, and more of Half-Life's world brought back to life, here's how to help:

🎗️ Support development on Patreon: https://patreon.com/lambdaengine/membership

💬 Join the Discord for bug reports, dev logs, sneak peeks: https://discord.gg/2RtzKtmmdj