scrubby

func _input_event(_viewport, event, _shape_idx):
    if event is InputEventMouseButton:
        if event.button_index == MOUSE_BUTTON_LEFT:
            is_mouse_held = event.pressed
            last_mouse_position = get_global_mouse_position()
            last_direction = Vector2.ZERO
            if event.pressed:
                scrub_sound.play() #start on click
            else:
                scrub_sound.stop() # stop on release

func _process(_delta: float) -> void:
    if is_mouse_held and not is_cleaned:
        var current_mouse_pos = get_global_mouse_position()
        var movement_vector = current_mouse_pos - last_mouse_position

        if movement_vector.length() > movement_threshold:
            var current_direction = movement_vector.normalized()
            # check if direction reversed (scrubbing motion)
            if last_direction != Vector2.ZERO:
                var dot = current_direction.dot(last_direction)
                if dot < -0.3:
                    scrub_amount += 1

            last_direction = current_direction
            last_mouse_position = current_mouse_pos

        if scrub_amount >= scrub_required:
            _on_cleaned()