perfect-vision VS fvtt-pointer

in foundry v10 you can do that with the module perfect vision which can set up areas where global illumination is disabled, alas some change in foundry v11 make updating the module too complicated for the author so he abandoned the project

You can use the module Perfect Vision to draw areas of darkness, limited vision etc.

Perfect Vision v4.1.14 Bugs URL

Look no further, perfect vision does exactly what you want to do: https://github.com/dev7355608/perfect-vision

Have you checked out Perfect Vision?

Perfect Vision v4.0.17 [Bugs URL](https://github.com/dev7355608/perfect-vision/issues)

perfect vision lets you do this with their vision limit setting in a drawn shape

Clicking on a drawing you should see a lighting menu like this https://github.com/dev7355608/perfect-vision/blob/main/images/drawing-config.png

Alright, this isn't a direct answer to your question, but more of me trying to answer what I think your problem is. I believe the solution is using https://github.com/dev7355608/perfect-vision

Perfect Vision: Improved vision support

fvtt-pointer - Gives all players the option to show a customizable cursor on demand, as well as ping any location with a custom ping! Hotkeys, pings, pointer, everything customizable!

PnP - Pointer and Pings! v2.4.0 [Bugs URL](https://github.com/Moerill/fvtt-pointer/issues)

PnP - Pointer and Pings!: Full-featured pings

Other Must have ones: Perfect Vision; Pointers and Pings; Item Piles.

There is actually a pretty nice module that allows you to share the position of your mouse pointer only when you want to: https://github.com/Moerill/fvtt-pointer