Godot - Implement blinking animation with Tween

GDScript code example to implement blinking animation with Tween.

One way to implement blinking process with Tween is to enable repeat processing with set_loops() and reciprocate transparency between "0" and "1" with tween_property().
Adjust to your preferred blinking timing with the 3rd argument of tween_property() (animation time) and set_delay().

var tween = create_tween().set_loops()
tween.tween_property(self, "modulate", Color( 1, 1, 1, 0), 0.1)
tween.tween_property(self, "modulate", Color( 1, 1, 1, 1), 0.1).set_delay(0.1)