DUbuntuGN3

var has_button_been_pressed = false
func _pressed():
    var button = get_tree().get_root().get_node("Node/Button")
    var panel = button.get_node("Panel")
    if (panel.visible == true and has_button_been_pressed == true):
        button.visible = false
    else:
        panel.visible = true
        has_button_been_pressed = true