How do I connect signals via code in Godot 4.2?

when a child sending a signal to a parent (since using get_parent() is a bad practice from what i read) or when a node needed to broadcast a signal to whole node about something, it will come useful

notice that the signal is a built-in signal made for Area2d node, you also can create a custom signal depending on what you need

Also, take a look at Global EventBus for simpler signaling:,Global%20Event%20Bus,-In%20GoDot%20we

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