Can we connect a Signal without knowing the emitter Node?

Question

Can I connect a signal without knowing the node, but only using the signal's name? Something like:

NodeA:#===================#
signal  Update_The_Popcorn

func OnTouchToast():
    Emit_Signal("Update_The_Popcorn")

NodeB:#===============================================#
ready():
    connect("Update_The_Popcorn",self,"Signal_Digest")

func Signal_Digest(SIGNAL):
    match SIGNAL_RECEIVED:
        "Update_The_Popcorn": $Popcorn.Implode()

Answer 1

As far as I know, no. There are however two ways to circumvent this problem that I can think of.
1) Add an intermediary node that will listen for the signals. For example, if you don't know who emits signal A, just use the _ready function of signal A emitters to connect to the intermediary listener, and then the listener will relay signal B to signal B listeners upon receiving signal A.

2) Find a way to make a node just listen for a signal directly, so that no matter who emits signal A, all signal A listeners will react.

Comments

Having a intermediary node was something I thought about doing with autoloads or using groups, it works, thanks for the suggestions, cheers.

Answer 2

AFAIK, you must call connect() on the object with the signal you'd like to connect to. In your example, you're trying to connect a method of NodeB to a signal of NodeB. You'd have to do something like:

var nodea = NodeA.new()
nodea.connect("UpdateThePopcorn", self, "Signal_Digest", [SIGNAL])

Answer 3

http://www.video-games.io/blog/

A signal manager to handle all the signals in the game. Super easy. Hope that helps