OpenFUT Core

Offline Ultimate Team backend — game-independent.

OpenFUT Core is the heart of the OpenFUT project: a fully offline, single-player FUT-style backend written in Rust. It is deliberately decoupled from any specific game, though it is designed to power a FIFA 23 offline experience.

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What it does

• Creates and manages local player profiles and clubs
• Manages coins, XP, and progression
• Generates packs from weighted JSON definitions
• Tracks your full card collection
• Squad builder with formations and chemistry (chemistry calculations: WIP)
• Objectives engine (daily, weekly, lifetime, milestone)
• SBC (Squad Building Challenge) engine with JSON-defined challenges
• Match result processing with coin and XP rewards
• NPC transfer market with daily refreshes
• Statistics tracking
• Fully moddable via JSON data files

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Tech Stack

• Rust + Axum (HTTP framework)
• Tokio (async runtime)
• SQLite + SQLx (database + migrations)
• Serde (JSON data layer)
• tower-http (middleware: CORS, tracing)

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Quick Start

# Build
cargo build --release

# Run (creates openfut.db in current directory)
./target/release/openfut-core

# Or with custom config
DATABASE_URL=sqlite://./myclub.db LISTEN_ADDR=127.0.0.1:8080 ./target/release/openfut-core

Environment Variables

Variable	Default	Description
LISTEN_ADDR	127.0.0.1:8080	Address to listen on
DATABASE_URL	sqlite://openfut.db	SQLite database path
DATA_DIR	data	Path to JSON data files

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API Routes

Method	Path	Description
GET	/health	Health check
POST	/auth/local	Create first-run profile + club
GET	/profile	Get active profile
GET	/club	Get active club with coins
GET	/cards	Browse all card definitions
GET	/collection	Get owned cards
GET	/packs	List unopened packs
POST	/packs/open/:pack_id	Open a pack
GET	/squad	Get active squad
POST	/squad	Save squad
GET	/objectives	List objectives with progress
POST	/matches/complete	Complete a match exactly once + receive rewards
GET	/sbc	List SBC definitions
POST	/sbc/submit	Submit SBC solution
GET	/market	Browse NPC transfer market
POST	/market/buy	Buy listing
POST	/market/sell	Quick-sell card
POST	/market/refresh	Refresh NPC listings
GET	/statistics	Get match/pack/SBC stats

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First Run

# Create your profile
curl -X POST http://localhost:8080/auth/local \
  -H 'Content-Type: application/json' \
  -d '{"username": "Player 1"}'

# Check your club (5000 coins + a gold pack waiting)
curl http://localhost:8080/club

# Open your starter pack
curl -X POST http://localhost:8080/packs/open/<pack_id>

# Submit a match win. `match_identity` keys exactly-once economy: resubmitting the
# same identity echoes the first result and grants nothing twice.
curl -X POST http://localhost:8080/matches/complete \
  -H 'Content-Type: application/json' \
  -d '{"match_identity":"match-1","result":"win","squad_id":"any","opponent_name":"Beginner AI","goals_for":3,"goals_against":0,"mode":"squad_battles"}'

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Modding

All game content lives in data/. Drop JSON files into the appropriate folder and restart.

data/
  cards/      ← CardDefinition[]
  packs/      ← PackDefinition[]
  objectives/ ← ObjectiveDefinition[]
  sbcs/       ← SbcDefinition[]
  events/     ← (future)

See docs/modding.md for schema reference.

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Development

cargo fmt
cargo clippy -- -D warnings
cargo test

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License

MIT — see LICENSE