Dialogue.gd

func play_dialogue_speech():
    emit_signal('started_speech')
    disable_button()
    var speech_length = speech.text.length()
    var speech_duration = TIME_PER_LETTER * speech_length
    speech.percent_visible = 0
    tween.interpolate_property(
        speech,
        'percent_visible',
        0,
        1,
        speech_duration,
        Tween.TRANS_LINEAR
    )
    tween.repeat = false
    tween.start()
    
func finished_reading():
    tween.stop(speech)
    speech.percent_visible = 0
    disable_button()
    emit_signal("finished_speech")

func _on_Tween_tween_completed(object, key):
    enable_button()