63 lines
1.8 KiB
GDScript3
63 lines
1.8 KiB
GDScript3
|
extends Control
|
||
|
|
class_name DialogicBackgroundMusic
|
||
|
|
|
||
|
|
onready var _track1 := $Track1
|
||
|
|
onready var _track2 := $Track2
|
||
|
|
|
||
|
|
var current_path = ""
|
||
|
|
var current_track = null
|
||
|
|
|
||
|
|
func _ready():
|
||
|
|
$Tween.connect("tween_completed", self, "_on_Tween_tween_completed")
|
||
|
|
|
||
|
|
func crossfade_to(path: String, audio_bus:String, volume:float, fade_length: float) -> void:
|
||
|
|
# find a better solution for this
|
||
|
|
if _track1.playing and _track2.playing:
|
||
|
|
return
|
||
|
|
|
||
|
|
var stream: AudioStream = load(path)
|
||
|
|
var fade_out_track = _track1
|
||
|
|
var fade_in_track = _track2
|
||
|
|
|
||
|
|
if _track2.playing:
|
||
|
|
fade_out_track = _track2
|
||
|
|
fade_in_track = _track1
|
||
|
|
|
||
|
|
# setup the new track
|
||
|
|
fade_in_track.stream = stream
|
||
|
|
fade_in_track.bus = audio_bus
|
||
|
|
fade_in_track.volume_db = -60
|
||
|
|
|
||
|
|
|
||
|
|
$Tween.interpolate_property(fade_out_track, "volume_db", null, -60, fade_length, Tween.TRANS_EXPO)
|
||
|
|
$Tween.interpolate_property(fade_in_track, "volume_db", -60, volume, fade_length, Tween.TRANS_EXPO)
|
||
|
|
$Tween.start()
|
||
|
|
|
||
|
|
# in case the audio is already playing we will attempt a fade into the new one from the current position
|
||
|
|
if current_path == path:
|
||
|
|
fade_in_track.play(fade_out_track.get_playback_position())
|
||
|
|
# else just play it from the beginning
|
||
|
|
else:
|
||
|
|
fade_in_track.play()
|
||
|
|
current_track = fade_in_track
|
||
|
|
|
||
|
|
current_path = path
|
||
|
|
|
||
|
|
func fade_out(fade_length:float = 1) -> void:
|
||
|
|
current_path = ""
|
||
|
|
current_track = null
|
||
|
|
$Tween.interpolate_property(_track1, "volume_db", null, -60, fade_length, Tween.TRANS_EXPO)
|
||
|
|
$Tween.interpolate_property(_track2, "volume_db", null, -60, fade_length, Tween.TRANS_EXPO)
|
||
|
|
$Tween.start()
|
||
|
|
|
||
|
|
func _on_Tween_tween_completed(object, key):
|
||
|
|
# if the stream was faded out
|
||
|
|
if object.volume_db == -60:
|
||
|
|
object.playing = false
|
||
|
|
object.stream = null
|
||
|
|
|
||
|
|
func get_current_info():
|
||
|
|
if current_track != null:
|
||
|
|
return {"file":current_path, "volume": current_track.volume_db, "audio_bus": current_track.bus}
|
||
|
|
return null
|