@tool
class_name MixedAudioStream extends AudioStream

enum TransIn {
	HARD,
	FROM_START,
	SOFT
}

enum TransOut {
	HARD,
	TO_END,
	SOFT
}

enum Loop {
	HARD_IN_OUT,
	HARD_IN_TO_END,
	HARD_IN_SOFT_END,
	HARD_OUT
}

enum Jump {
	HARD,
	SOFT
}

@export var tracks: Array[AudioTrack]:
	set(dict):
		tracks = dict
@export var transitions: Array[FillerTrack]

var _playback: AudioStreamPlaybackPolyphonic

func is_meta_stream():
	return true

func is_monophonic():
	return false

func initialize_mix(from_position: float, playback: AudioStreamPlaybackPolyphonic):
	_playback = playback
	
func get_stream_by_id(id: int) -> AudioStream:
	return tracks[id].audio

func fadeout(stream_id: int, delay: float):
	var tween: Tween
	tween = _playback.pla