升级 is a popular Chinese trick-taking playing card game, also known as tractor, finding friends, fighting for 100 points, 80 points, etc. Rules are available here. Due to the COVID-19 shelter-in-place, I've been unable to play the this game in person... so I figured an online version would be worthwhile.
cd frontend && yarn build && cd .. && cd backend && cargo run
The server is a self-contained static binary and does not terminate TLS. It
listens on 127.0.0.1:3030, and should only be exposed to an external network
behind a proxy that supports both HTTP and WebSocket protocols (only tested
with nginx).
cd frontend && yarn watch
cd backend && cargo run --features dynamic
There are shared types in the Rust backend and the Typescript frontend; the frontend/json-schema-bin/src/main.rs file dumps the Rust types to JSON Schema, and the yarn types command will generate the Typescript types.
yarn types && yarn prettier --write && yarn lint --fix
A mapping of card data is generated from the server. It's checked in at
src/generated/cards.json. To update it, start up the server and run
yarn download-cards-json
To format frontend code:
# Dry-run/check
yarn prettier --check
# Fix files, will overwrite files
yarn prettier --write
To run tslint:
cd frontend && yarn lint
And clippy:
cargo clippy
To run tests:
cd frontend && yarn test
cargo test
The entire state of each game is stored in the memory of the server process. Restarting the game kicks all players, and games are automatically closed when all players have disconnected. The bulk of the game logic is implemented in the server, but players are expected to keep each other in check -- the server does not validate moves in their entirety.
For simplicity, the game is written in Rust and Javascript, linking in Axum as the WebSocket/HTTP server implementation and using React from a CDN.
- No mobile support
- Incomplete validity checking for forced-plays
- No player limit per game
- No overall player limit