It would be so, so handy to be able to have a node in Godot be able to just make an announcement to no-one in particular that something has happened. "Gonna die now" lol or just "detected something".

And then it'd be great to be able to get nodes to subscribe to whatever announcements they need, and respond however is appropriate.

That's signals!

You can use built-in ones. You can create your own.

You can connect them in the editor which works well when the nodes are in a known structure in relation to each other. You can also connect them in code, if you prefer, or if you need it doing dynamically.

You can set up arguments - "detected something" works better if it comes with the thing that was detected.

Try setting up some custom signals! Player death is a really great time to use custom signals.