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## Summary Effect cosmetic attributes are meant to be standardized on **game tiles** for spatial values and **per-second** for rates. An audit of every effect attribute against its renderer consumer found one violation: the gradient trail's `colorSize`. - The trail shader computed the palette cycle as `colorSize * 4.0 * count`, so `colorSize: 1` produced ~4-tile bands — while `CosmeticSchemas.ts` already documented `colorSize` as "band width in tiles". - This PR removes the hidden ×4 in `trail.frag.glsl` and the mirrored factor in the structures gradient pace in `structure.frag.glsl`, so `colorSize` is now exactly the band width in tiles, and updates the pace-formula doc comment in `CosmeticSchemas.ts`. All other attributes were verified already standard: gradient `movementSpeed` (tiles/s), transition `frequency` (colors/s), spiral `radius` (tiles) / `rotationSpeed` (rad/s), explosion `size`/`thickness` (tiles), `speed` (tiles/s), `transitionSpeed` (colors/s). Every animated path runs off a `uTime` uniform that is genuinely in seconds. ## Catalog impact - Production `cosmetics.json` ships **zero** effects today, so there is no live migration. - Dev catalog gradient entries need `colorSize` ×4 to preserve their current look (`rainbow_trail` 0.2→0.8, `red_black_trail` 1→4, `tiel_red_gradient_nuke_trail` 0.5→2, `rwb_structure_gradient` 5→20). ## Test plan - `npx vitest tests/CosmeticSchemas.test.ts --run` — 51 passed (schema shape unchanged; this is a shader-semantics fix). 🤖 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.