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Let anyone with the game URL watch as a read-only spectator
Anonymous users and logged-in non-players can now open /game/<id> and
follow the match: they see the table, the score and each player's
captured cards and scope, but never a hand and never the join code.
Spectator actions are rejected with a forbidden error.

Backend (tavolo-platform / tavolo-scopone):
- /ws/games/{id} accepts anonymous and non-seated connections as
  spectators; only unknown games are refused. The state payload carries
  spectator: true and withholds join_code unless the viewer is seated.
- GET /api/games/{id} is public and returns the same personalized
  (player) or read-only (spectator) view.
- GameEngine.view_for/game_over_view take Optional[str] (None = spectator)
  and are documented to hide privileged information for non-seated
  viewers.

Frontend (Sycamore):
- Parse the spectator flag and render a spectator table: card backs plus
  captured/scope for every seat, no clickable hand, "Spectating" badge.
- A pre-start spectator sees a "game not started yet" waiting room with
  the watch link and no join code.
- "Copy watch link" buttons in the waiting room and the game HUD.
- The hand-end summary carries no acknowledge button for spectators and
  the game-over overlay hides "My matches".

Tests and docs updated.
2026-10-06 12:51:53 +08:00
2026-09-18 19:18:04 +08:00

tavolo

A platform for multiplayer card games. The first game is scopone scientifico — the four-player, fixed-partnership Italian card game:

  • server/ — backend: Python + kaya framework, OIDC login, live games in Redis, match statistics in Postgres. A monorepo of three distributions sharing the tavolo namespace: the game-independent tavolo-platform, the scopone game tavolo-scopone, and the tavolo-app composition root wiring them together. See server/README.md.
  • web/ — frontend: Rust + Sycamore compiled to WebAssembly, built with Trunk and styled with Bootstrap 5.3 (MIT, vendored under web/vendor/ so builds work offline) plus the custom felt theme in web/theme.css. Card images are the CC0 woodcut napoletane deck traced from a 1902 Naples print (SONDLecT/woodcut-napoletane).

Run the whole stack

docker compose up --build

Postgres, Redis, a mock OIDC provider (test users alice, bob, carol, dave), the database migrator and the app all come up together. The app — frontend and API — listens on http://127.0.0.1:8080.

Because both the browser and the app talk to the OIDC issuer at http://mockoauth:8180/tavolo, add a host entry once:

echo "127.0.0.1 mockoauth" | sudo tee -a /etc/hosts

Between hands

When a hand ends but the match is not decided, the game pauses on a scoring summary screen: every player sees how each category was won (carte, denara, settebello, primiera, scope — plus napola and asso pigliatutto when enabled) with the running totals and must click "Understood" before the next hand is dealt. If someone is away the next hand is dealt automatically after HAND_ACK_TIMEOUT_SECONDS (default 30s). The match-ending hand is explained on the final screen.

On your turn

Every turn shows a countdown (TURN_TIMEOUT_SECONDS, default 30s). If a player does not move — disconnected or fallen asleep — the server plays a random legal card for them (randomizing among the legal captures when the rules require a capture), so one absent player cannot stall the table.

Watching

Anyone who has the game URL (/game/<id>) can watch, logged in or not: spectators see the table, the score and every player's captured cards and scope, but never a hand and never the join code. The "Copy watch link" button in the waiting room and in the game HUD copies the URL to share. A spectator who opens the URL before the match starts sees a "game not started yet" waiting room.

Development

Backend (from server/):

cd server
python3 -m venv .venv
.venv/bin/pip install -r requirements.txt
.venv/bin/pip install -e ./packages/tavolo-platform -e ./packages/tavolo-scopone -e './packages/tavolo-app[dev]'
.venv/bin/python -m unittest discover -s tests -t .
.venv/bin/python -m unittest discover -s packages/tavolo-platform/tests
.venv/bin/python -m unittest discover -s packages/tavolo-scopone/tests

Frontend (from web/), with the backend running on :8080:

cd web
trunk serve          # SPA on http://localhost:8000, /api /auth /ws proxied

Trunk proxies /api, /auth and /ws to 127.0.0.1:8080 (see web/Trunk.toml). For the login redirect to land back on the dev server, run the backend with:

OIDC_0_PROVIDER=default \
OIDC_0_ISSUER=http://localhost:8180/tavolo \
OIDC_0_CLIENT_ID=tavolo \
OIDC_0_REDIRECT_URI=http://localhost:8080/auth/default/callback \
OIDC_0_POST_LOGIN_REDIRECT=http://localhost:8000/ \
OIDC_0_POST_LOGOUT_REDIRECT=http://localhost:8000/ \
  .venv/bin/granian --host 127.0.0.1 --port 8080 tavolo.app:app

Card images are committed under web/assets/cards/; web/fetch-cards.sh re-downloads them if needed.

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Description
Scopone scientifico multiplayer backend built on the kaya framework
Readme
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Rust 23.5%
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