Spades

Rust implementation of the four-player trick-taking card game Spades. Rules: pagat.com/auctionwhist/spades.html.

Installation

[dependencies]
spades = "2.0"

Library Usage

use spades::{Game, GameTransition, State};
use rand::seq::SliceRandom;
use rand::thread_rng;

let mut g = Game::new(
    uuid::Uuid::new_v4(),
    [uuid::Uuid::new_v4(); 4],
    500,
    None, // optional TimerConfig
);
g.play(GameTransition::Start).unwrap();

let mut rng = thread_rng();
while *g.get_state() != State::Completed {
    if let State::Trick(_) = *g.get_state() {
        let legal = g.get_legal_cards().unwrap();
        let card = *legal.choose(&mut rng).unwrap();
        g.play(GameTransition::Card(card)).unwrap();
    } else {
        g.play(GameTransition::Bet(3)).unwrap();
    }
}

Server Mode

Optional HTTP server for hosting concurrent multiplayer games. Includes matchmaking, challenge links, WebSocket game subscriptions, SSE event streams, optional SQLite persistence, and Fischer increment timers. Ships as a separate crate (spades-server) so library consumers don't pull in axum/tokio/sqlite.

cargo run -p spades-server -- --port 3000
cargo run -p spades-server -- --port 3000 --db games.sqlite

See SERVER.md for the full API reference.

Bidding

Nil bids are supported (bet zero for +/-100 point bonus/penalty). Blind bids are not yet supported.

Documentation

docs.rs/spades

Contributing

Issues and pull requests welcome. The repo ships an opt-in pre-push hook that runs clippy, the full test suite, and a per-crate coverage regression check via cargo tarpaulin. See docs/coverage.md for how to enable it and how the coverage baseline ratchets.