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CommunityJev Demos & Experiments
Pacman AI Race
Browser Pac-Man race where a deterministic three-junction simulation filters fatal routes, then Jev makes one typed Choice among the surviving route IDs while the server rejects any answer outside the supplied set. Self-hosted Laya runs the same contract for comparison.
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- 0
- Language
- JavaScript
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- Last verified
- Oct 2026
About this project
A browser-based maze chase experiment that runs TypeSafe AI's hosted Jev and self-hosted Laya side by side. Both pilots start from the same maze and receive the same full-board state and typed route choices. Each column exposes its own score, selected route, candidate probabilities, confidence, latency, metrics, and decision log. Requirements: Node.js 20 or newer. Python 3.10 or newer is required only when running Laya locally. Open .env and configure the providers you want to use:
Quoted from the project's README. Read the full README.
Used inJev for Gaming
- Languages
- JavaScript
- Platforms
- Browser
- Capabilities
- Open sourceRequires API key
Highlights
- Searches three junction decisions ahead with up to 240 nodes and filters simulated-fatal routes whenever any full-horizon survivor exists
- Server-side validation rejects model output that is not one of the supplied route IDs; the game never substitutes a local safety route
- Same maze, ghost seed and simulation clock for both pilots, so provider latency does not change the underlying ghost strategy
- Ships an offline benchmark that reports clears, deaths, decisions and forecast mismatches for both policies with no credentials
- Built on TypeSafe's official @typesafe-ai/sdk with separate Jev and Laya provider adapters; Node.js 20+ required
Watch out
No license file, so all rights reserved by default. The repository description is empty, it had 0 stars at verification, and the Laya comparison needs a separate self-hosted server.
Questions about this entry
Short answers drawn from the linked project or page.
Yes. Each decision sends a fresh snapshot with the full maze, remaining dots, ghost positions and headings, lives, power timer and recent path; the score is deliberately not sent.
Requests are shown and retried, and if a prefetched answer is still late the world briefly holds at the route endpoint rather than falling back to a local route.
Install Node.js 20 or newer, run `npm install`, copy `.env.example` to `.env`, add at least `TYPESAFE_API_KEY`, then `npm start`. That serves the side-by-side race at localhost:4173, solo or manual play at /pilot.html, and a repeatable benchmark at /benchmark.html.
No. You can configure Jev, Laya, or both, and manual mode works with neither provider. Comparison mode does require both to be ready, and it reports a missing Jev key or an unavailable Laya server before the race begins.
They live on the local Node server only. The README states the API keys and Laya connection details are never sent to browser storage or committed to Git, and `npm start` loads them from `.env` automatically.
Yes. `npm run benchmark:offline` runs a fixed-seed, two-level, active-ghost benchmark without provider credentials, and the test suite uses fake clients so it never spends API credits or loads local model weights.
Python 3.10 or newer. The README shows creating a virtualenv, `pip install "laya[serve]"`, then running `laya-serve` in a second terminal; the first launch downloads the model weights, and its URL must match LAYA_BASE_URL.
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