ZIP file in case it helps
#Signal is emitted but not received
ocean jacinth
visual heron
You made a typo on the method that you connect to your lightning_collected signal. Your method is called _on_lightning_collected and not _on_lightning_connected.
In Godot 4 you can use this syntax to connect signals now:
node.lightning_collected.connect(_on_lightning_collected)
The editor will then also give you a warning if that method doesn´t exist in case you make a typo again!
Also to emit signal you can write
lightning_collected.emit()
and if you had any arguments for your signals:
signal_with_arguments.emit(arg1, arg2)
