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1v1 Jev quickscope arena — Three.js + TypeSafe System One
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- 9
- Last pushed
- Updated Sep 2026
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CommunityJev Demos & Experiments
OneVOneJev
Server-authoritative browser FPS where one queued player fights a Jev-driven opponent to five kills, with spectators, killcam replay, and heuristic fallback when the API is down.
- Stars
- 42
- Language
- TypeScript
- Published by
- Community
- Author
- emrickgarrett
- Last verified
- Oct 2026
About this project
Server-authoritative browser FPS: queue up, fight Jev (TypeSafe System One) in a Rust-like industrial yard, first to 5 kills. Spectators watch and chat from the sidelines. Final kill gets a killcam before the next challenger. Client: Vite + Three.js + TypeScript. Server: Node.js + ws, 60 Hz sim, 20 Hz snapshots. AI: @typesafe-ai/sdk (jev-latest) with heuristic fallback. Production-style (single Node host serves API + built client): Serves the built client from the Node server on PORT (default 3001).
Quoted from the project's README. Read the full README.
Works forJev for Classification
Used inJev for Software & DevTools
- Languages
- TypeScript
Highlights
- Queues one human against Jev per match while others spectate and chat, first to five kills.
- Runs a 60 Hz server simulation with frequent Jev decision ticks and client rendering in the browser.
- Uses bolt-action sniper rules with ADS settle timing, shared radar, safe respawns, and replay on the final kill.
- Keeps API keys server-side and falls back to heuristics so matches never stall on outages.
Watch out
Live matches consume Jev calls continuously while playing, so budget API usage and keep the key on the server. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
The server builds JSON state each tick and fans out Choice and Noul questions for move, aim, ADS, fire, and jump. The key stays server-side and calls run only while both fighters are alive.
A deterministic heuristic uses the same action interface, so the match continues. It keeps the game playable but do not expect the same aiming or movement judgment.
Run the Node server and the built client from one host with WebSocket support. Serverless edge hosting does not fit the sticky rooms plus high-frequency simulation design.
Install, copy the env example, add the key, run dev for local play or build plus start for production parity. Railway needs repo-root builds with npm start and a generated domain.
Vite, Three.js and TypeScript on the client; Node.js with ws on the server, running a 60 Hz simulation with 20 Hz snapshots; and the official @typesafe-ai/sdk on jev-latest with a heuristic fallback. In dev the game UI is on http://localhost:5173 with the WebSocket proxied at /ws to localhost:3001. For production parity, npm run build then npm start serves the built client from the Node server on PORT, default 3001.
The server builds structured JSON state on each decision tick at roughly 9 Hz and fans out Choice and Noul questions for move, yaw, pitch, ADS, fire and jump. Calls run only while a match is in the playing state and both fighters are alive, so an empty lobby costs nothing and a spectator is free. TypeSafe usage otherwise scales with live match time, and Railway's hobby or trial tier is enough for a small public demo.
One human against Jev at a time while others queue, spectate and chat; first to five kills. Controls are WASD, mouse look with pointer lock, right mouse for ADS, left mouse to fire, Space to jump, T to chat. The rifle is bolt-action sniper: inaccurate hipfire, accurate once ADS settles about 65 percent in. Radar is shared with no fog of war, respawns carry brief spawn protection, and the final kill gets a killcam before the next countdown.
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