Follow-up to the listed-lobby auto-start feature (`2a82b01e3`, on main). ## Bug When a listed lobby auto-started (and in some paths on manual start), the game began server-side but a player got ejected back to the menu before it loaded. Root cause: `BaseModal.close()` navigates via `showPage()`, which **force-closes whichever page-modal is currently visible**. During the game-start transition that is the *other* lobby modal — closing the join modal first cascade-closed the host's modal with `leaveLobbyOnClose` still armed (host disconnected → host-left teardown killed the game); reversing the order just moved the victim to the joiner. No close order fixes both sides. ## Fix - **Disarm both lobby modals before closing either** in the prestart transition (`disarmLeaveOnClose()` on `HostLobbyModal` and `JoinLobbyModal`), so no cascade order can disconnect anyone mid game-start. - Both modals re-arm `leaveLobbyOnClose` in `onOpen` instead of `onClose`'s state reset, so once disarmed no later cascade close can re-arm it until the modal is reopened. - `HostLobbyModal.closeWithoutLeaving()` (pattern `JoinLobbyModal` already used), called explicitly instead of the generic modal-close loop. - **Server hardening:** `handleClientDisconnect` bails on `hasStarted()` (which includes prestart) instead of raw `_hasStarted`, so host socket churn during the lobby → game transition can never tear down a starting game regardless of client behavior. Regression test included. ## Verification Headless end-to-end (two browser contexts, host + joiner, `leave-lobby` stack-trace tripwire armed on both pages): - **Manual start:** host and joiner both receive prestart/start and enter the game; zero `leave-lobby` dispatches. - **Auto-start:** same, with nobody interacting after listing. Also confirmed manually in a real browser. The auto-start deadline was temporarily 30s during testing and is restored to 5 minutes in the final commit. Full suite green (1843 + 161), tsc/eslint/prettier clean. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Fable 5 <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.