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war3observer is a tool that keeps a local webpage updated with data from the Warcraft III observer API. This can be used for streaming tools such as OBS to render the data on stream.

It runs a local websocket server which sends a message with the entire state periodically. It uses war3structs to parse the state from the memory mapped file. A web client written in mithril.js is included to render the state.

• Download the latest release
• Extract it somewhere
• In OBS, add a browser source to your scene, tick Local file and select any of the .html files in the client folder you extracted
• Set the width and height to 1920x1080 for 16:9, 1440x1080 for 4:3, scale it in OBS as needed
• For best performance (optional):
  • Use existing sources between scenes (one file = one source)
  • To avoid them running in the background regardless of whether you're using them or not, keep the sources in a separate scene collection OR enable Shutdown source when not visible on them
  • If the source has no animations the FPS can be set to something low, like 5
• Now you can run war3observer.exe whenever you want the overlay to start updating

You generally shouldn't, but if you experience the overlay not updating properly, you can try any of these:

• Restart war3observer.exe (after you've started Warcraft III)
• Refresh the browser cache in OBS (double-click on the source, hit OK)

For advanced options you can create a file called war3observer.config.json in the same directory as war3observer.exe. Example config file:

{
  "port": 8657,
  "clientSettings": {
    "useTeamColors": true,
    "hideHeroItems": true,
    "reversePlayerOrder": true
  }
}

war3observer.exe also comes with some command-line options, run it with --help for details.

It's possible to control the overlay beyond OBS scenes with an external program. Send a JSON message to the server with top-level action as "setClientSettings" and content as an object of settings to change. All listening clients will update accordingly.

To update to the latest version you can download the latest release and extract the contents to wherever you have the previous version installed (replacing files). If you are using the included client you will have to clear the browser cache in OBS as well.

• Have Python 3, node, and Warcraft III installed
• git clone https://github.com/warlockbrawl/war3observer.git
• cd war3observer
• pip install -r requirements.txt -r requirements-dev.txt
• python -m war3observer to start the server
• cd client
• npm install
• npm run start to watch for changes and build the client (rerun this whenever a new view is added)
• mkdir dist\icons
• python ..\tools\extract_icons.py <wc3 installation dir> .\dist\icons if you want to include icons

If you're interested in making personalized views and you want to make use of the included client's environment, you can use the war3observer-client-tools package on npm.

Note: If you only need to edit a view's settings and/or add custom CSS, you can just copy+paste one of the included views and edit its HTML. Add custom CSS in <style> tags or link to one; change app.settings before the call to app.boot().

Create a directory for your project that contains these files:

package.json

{
  "private": true,
  "scripts": {
    "start": "webpack -d --watch",
    "build": "webpack -p"
  }
}

webpack.config.js

const config = require('war3observer-client-tools');

module.exports = config;

views/<your view>/app.js

import App from 'war3observer-client-tools/common/App';

const app = new App();

export { app };

Now you can npm install --save-dev war3observer-client-tools and npm run build and it will create your view in dist.