live / firmware
Gateway
Match server — positions, spells, lighting & audio bridges.
Engineering
Gateway — match server live
Node.js match server with Postgres and admin UI
(gateway_server/). Aggregates UWB positions, runs game rules, and bridges
spell/position streams to lighting and audio controllers.
Responsibilities
- Game state, spells, HP/mana, treasure nodes
- UWB position aggregation / multilateration
- LED auto-mapping for obstacle fleet
- UDP bridges to lighting (:4123/:4124) and audio (:4120/:4121)
- Admin, device management, OTA coordination
What it is not
Unity is for environment collision and VFX sync — not arena audio output or LED addressing. Lighting/audio controllers are separate services that consume gateway UDP streams.
Canonical architecture: REAL_ARENA.md, ARCHITECTURE.md.
CAPEX line
Used SFF PC is part of the ~21k CZK gateway + charger + hazer + props bucket;
full v1 CAPEX ~324k CZK without DMX (owner decision 2026-07-22).