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extends Node
signal song_paused(paused : bool)
signal song_started(track_id : int)
## Only triggers when song naturally ends
signal song_finished(track_id : int)
signal song_scrubbed(percentage : float, seconds : float)
# REQUIREMENTS
# * SS-67
@export_dir var music_directory : String
@export var first_song_name : String
@export var _audio_stream_player : AudioStreamPlayer
var _selected_track := 0
var _available_songs : Array[SongInfo] = []
var _auto_play_next_song : bool = true
var playlist: Array[int] = []
var playlist_index:int = 0
var preferred_playlist_len: int = 7
var last_played: int = -1
## True if music player should be visible.
## Used to keep keep consistency between scene changes
var is_music_player_visible : bool = true
var _has_startup_happened : bool = false
func get_all_song_names() -> PackedStringArray:
var songNames : PackedStringArray = []
for si : SongInfo in _available_songs:
songNames.append(si.song_name)
return songNames
func get_all_song_paths() -> PackedStringArray:
var songPaths : PackedStringArray = []
for si : SongInfo in _available_songs:
songPaths.append(si.song_path)
return songPaths
func get_current_song_index() -> int:
return _selected_track
func get_current_song_name() -> String:
return _available_songs[_selected_track].song_name
func scrub_song_by_percentage(percentage: float) -> void:
var percentInSeconds : float = (percentage / 100.0) * _audio_stream_player.stream.get_length()
_audio_stream_player.play(percentInSeconds)
song_scrubbed.emit(percentage, percentInSeconds)
func get_current_song_progress_percentage() -> float:
return 100 * (_audio_stream_player.get_playback_position() / _audio_stream_player.stream.get_length())
func is_paused() -> bool:
return _audio_stream_player.stream_paused
func set_paused(paused : bool) -> void:
_audio_stream_player.stream_paused = paused
song_paused.emit(paused)
func toggle_play_pause() -> void:
set_paused(not is_paused())
func start_current_song() -> void:
_audio_stream_player.stream = _available_songs[_selected_track].song_stream
_audio_stream_player.play()
song_started.emit(_selected_track)
# REQUIREMENTS
# * SS-70
func start_song_by_index(id: int) -> void:
_selected_track = id
start_current_song()
# REQUIREMENTS
# * SS-69
func select_next_song() -> void:
#_selected_track = (_selected_track + 1) % len(_available_songs)
if playlist_index >= preferred_playlist_len or playlist_index >= len(playlist):
generate_playlist()
playlist_index = 0
_selected_track = playlist[playlist_index]
playlist_index += 1
last_played = playlist_index
start_current_song()
func select_previous_song() -> void:
_selected_track = (len(_available_songs) - 1) if (_selected_track == 0) else (_selected_track - 1)
start_current_song()
func setup_compat_song(file_name) -> void:
var song = SongInfo.new()
var stream = SoundSingleton.get_song(file_name)
var metadata = MusicMetadata.new()
metadata.set_from_stream(stream)
var title = metadata.title
if title == "":
#use the file name without the extension if there's no metadata
title = file_name.split(".")[0]
song.init_stream(file_name,title,stream)
_available_songs.append(song)
func add_compat_songs() -> void:
for file_name : String in SoundSingleton.song_list:
setup_compat_song(file_name)
func add_ootb_music() -> void:
var dir := DirAccess.open(music_directory)
for fname : String in dir.get_files():
if fname.ends_with(".import"):
fname = fname.get_basename()
if fname.get_basename() == first_song_name:
_selected_track = _available_songs.size()
var song = SongInfo.new()
song.init_file_path(music_directory, fname)
_available_songs.append(song)
func generate_playlist() -> void:
var song_names = MusicConductor.get_all_song_paths()
var possible_indices = range(len(song_names)-1)
var title_index = song_names.find(SoundSingleton.title_theme)
possible_indices.remove_at(title_index)
var actual_playlist_len = min(preferred_playlist_len,len(possible_indices))
#if the playlist size is too large or small, make it the same size as what we
#need to support
if len(playlist) != actual_playlist_len:
playlist.resize(actual_playlist_len)
playlist.fill(0)
#The song we just played can be in the playlist, just not the first one
if last_played != -1:
possible_indices.remove_at(last_played)
#essentially shuffle-bag randomness, picking from a list of song indices
for i in range(actual_playlist_len):
var ind = randi_range(0,len(possible_indices)-1)
#add back the last song we just played as an option
if i==2:
possible_indices.append(last_played)
playlist[i] = possible_indices[ind]
possible_indices.remove_at(ind)
# REQUIREMENTS
# * SND-2, SND-3
func _ready() -> void:
add_ootb_music()
#don't start the current song for compat mode, do that from
#GameStart so we can wait until the music is loaded
func set_startup_music(play : bool) -> void:
if not _has_startup_happened:
_has_startup_happened = true
set_paused(not play)
func _on_audio_stream_player_finished() -> void:
song_finished.emit(_selected_track)
if _auto_play_next_song:
select_next_song()
start_current_song()
|
zaaarf