Is It possible To Manipulate NW.js to Enable/Disable Certain Chromium Args Using JS?

[dannyy...@googlemail.com]

Hello NW.js Team!
I'm mainly developing HTML5 games with Construct 2 + NW.js and I'm really interested in features that fit into that category. Two important features that modern video games support in native backgrounds is setting the framerate (FPS) and V-Sync options on the fly, inside the game itself. While --disable-gpu-vsync and --limit-fps=60 work great and can be hidden inside the manifest file, I would like to give my users/players the choice to set these settings inside the game itself.
So my simple questions would be:

1. Is it possible to manipulate NW.js in order to limit to framerate (FPS) instantly, using JS code or something similar?
2. Is it possible to manipulate NW.js in order to disable/enable V-Sync instantly, using JS code or something similar?
   

Cheers!

[Roger Wang]

It would depends on how the switch is used in Chrome. IMO they are only effective when the browser is started. So you might want to modify package.json in your app and prompt user to restart your app.

[dannyy...@googlemail.com]

Sounds good, thanks!

I'm a beginner with JS, do you know an API or something else in order to easily modify the chromium arg's property inside the manifest file?
Also is there a "Complete Reload" feature that can automatically close and re-open NWjs instead of the user doing it manually?

[Russell Valentine]

package.json is just a json file you can read the file in as a string then do JSONIFY.parse(package_json_str); modify it then stringify it and save it again.

Maybe this document would be helpful.
https://www.codementor.io/codementorteam/how-to-use-json-files-in-node-js-85hndqt32

[Russell Valentine]

Ohh and reloading, I have no tried it, but this maybe?
https://github.com/nwjs/nw.js/issues/4505

[dannyy...@googlemail.com]

Thanks a lot for the help everyone, I think I can work something out with all the information in here.

Cheers!