FPS Arena

First-person arena shooter built on imperative Three.js. The canonical implementation is scourge-survivors. Everything here is grounded in real code — read the cited file before changing it.

This skill assumes the engine conventions from shipshit-engine (GameContext + GameSystems registry, new XSystem(ctx, sys), siblings via this.sys.<name>, data-driven constants.ts + data/*.ts, HUD pushed to React via a StateListener). Read that skill first if unfamiliar.

File layout (combat slice)