Evan Pelle
6e23c26723
Verified findings from a code audit and fixed the legitimate, well-scoped ones. Notable: crashed cluster workers were never respawned because worker.process.env is undefined in the exit handler, so WORKER_ID was always undefined (confirmed empirically). Fixes: - Master: respawn crashed workers via a worker.id -> WORKER_ID registry instead of the always-undefined worker.process.env.WORKER_ID. - GameServer: report Finished when _hasEnded so abandoned private lobbies are cleaned up instead of lingering until max duration; remove sockets from the websockets Set on close/rejoin; reset hasReachedMaxPlayerCount when a player leaves before start (avoids premature under-capacity starts, e.g. ranked 1v1). - Worker: reap WebSocket connections that upgrade but never authenticate (30s join timeout) to prevent Slowloris-style FD exhaustion. - ServerEnv: add a 1h TTL to the cached JWKS public key so IdP key rotation doesn't break all logins until a restart. - SpawnExecution: ignore a client-supplied tile in random-spawn mode so a forged spawn intent can't pick its own coordinates (+ test). - GameRenderer / MultiTabDetector: remove window listeners on teardown (bind once so add/removeEventListener references match). - LocalPersistantStats: guard localStorage access with try/catch so sandboxed iframes / disabled-storage contexts don't crash game start. - StructurePass: reuse per-frame uniform arrays instead of allocating each draw. Also documents a known, intentionally-unfixed auth gap on /api/archive_singleplayer_game (pending a product decision on logged-out users). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
OpenFront.io is an online real-time strategy game focused on territorial control and alliance building. Players compete to expand their territory, build structures, and form strategic alliances in various maps based on real-world geography.
This is a fork/rewrite of WarFront.io. Credit to https://github.com/WarFrontIO.
License
OpenFront source code is licensed under the GNU Affero General Public License v3.0
Current copyright notices appear in:
- Footer: "© OpenFront and Contributors"
- Loading screen: "© OpenFront and Contributors"
Modified versions must preserve these notices in reasonably visible locations.
See the LICENSE for complete requirements.
For asset licensing, see LICENSE-ASSETS.
For license history, see LICENSING.md.
🌟 Features
- Real-time Strategy Gameplay: Expand your territory and engage in strategic battles
- Alliance System: Form alliances with other players for mutual defense
- Multiple Maps: Play across various geographical regions including Europe, Asia, Africa, and more
- Resource Management: Balance your expansion with defensive capabilities
- Cross-platform: Play in any modern web browser
📋 Prerequisites
- npm (v10.9.2 or higher)
- A modern web browser (Chrome, Firefox, Edge, etc.)
🚀 Installation
-
Clone the repository
git clone https://github.com/openfrontio/OpenFrontIO.git cd OpenFrontIO -
Install dependencies
npm run instDo NOT use
npm installnornpm ibut instead use ournpm run inst. It runs the safernpm ci --ignore-scriptsto install dependencies exactly according to the versions inpackage-lock.jsonand doesn't run scripts. This can prevent being hit by a supply chain attack.
🎮 Running the Game
Development Mode
Run both the client and server in development mode with live reloading:
npm run dev
This will:
- Start the webpack dev server for the client
- Launch the game server with development settings
- Open the game in your default browser (to disable this behavior, set
SKIP_BROWSER_OPEN=truein your environment)
Client Only
To run just the client with hot reloading:
npm run start:client
Server Only
To run just the server with development settings:
npm run start:server-dev
Connecting to staging or production backends
Sometimes it's useful to connect to production servers when replaying a game, testing user profiles, purchases, or login flow.
To replay a production game, make sure you're on the same commit that the game you want to replay was executed on, you can find the
gitCommitvalue viahttps://api.openfront.io/game/[gameId]. Unfinished games cannot be replayed on localhost.
To connect to staging api servers:
npm run dev:staging
To connect to production api servers:
npm run dev:prod
🛠️ Development Tools
-
Format code:
npm run format -
Lint code:
npm run lint -
Lint and fix code:
npm run lint:fix -
Testing
npm test
🏗️ Project Structure
/src/client- Frontend game client/src/core- Deterministic game simulation/src/server- Backend game server/resources- Static assets (images, maps, etc.)
🤝 Contributing
Contributions and translations are welcome! See CONTRIBUTING.md for the workflow, the approved-issue process, project governance, and translation info.