I have googled a bunch on how to fix this problem, but I'm kind of a beginner and none of the articles were related to python arcade, so I couldn't figure it out.
I'm trying to play background music in my game and I tried the python arcade Background Music example, but upon trying to get the position the example throws an error at me, saying: TypeError: get_stream_position() takes 1 positional argument but 2 were given. Has some update messed up some code or something?
Heres the code I think is relevant to the problem:
def __init__(self, width, height, title):
super().__init__(width, height, title)
arcade.set_background_color(arcade.color.WHITE)
self.music_list = []
self.current_song_index = 0
self.current_player = None
self.music = None
def advance_song(self):
self.current_song_index += 1
if self.current_song_index >= len(self.music_list):
self.current_song_index = 0
print(f"Advancing song to {self.current_song_index}.")
def play_song(self):
if self.music:
self.music.stop()
print(f"Playing {self.music_list[self.current_song_index]}")
self.music = arcade.Sound(self.music_list[self.current_song_index], streaming=True)
self.current_player = self.music.play(MUSIC_VOLUME)
time.sleep(0.03)
def setup(self):
self.music_list = [":resources:music/funkyrobot.mp3", ":resources:music/1918.mp3"]
self.current_song_index = 0
self.play_song()
def on_update(self, dt):
position = self.music.get_stream_position(self.current_player)
if position == 0.0:
self.advance_song()
self.play_song()
Here's the full error:
Playing :resources:music/funkyrobot.mp3
Traceback (most recent call last):
File "c:/Users/[name]/Documents/Projects/background_music.py", line 77, in <module>
main()
File "c:/Users/[name]/Documents/Projects/background_music.py", line 74, in main
arcade.run()
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\arcade\window_commands.py", line 236, in run
pyglet.app.run()
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\app\__init__.py", line 107, in run
event_loop.run()
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\app\base.py", line 167, in run
timeout = self.idle()
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\app\base.py", line 237, in idle
redraw_all = self.clock.call_scheduled_functions(dt)
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\clock.py", line 292, in call_scheduled_functions
item.func(now - item.last_ts, *item.args, **item.kwargs)
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\arcade\application.py", line 213, in _dispatch_updates
self.dispatch_event('on_update', delta_time)
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\window\__init__.py", line 1333, in dispatch_event
if EventDispatcher.dispatch_event(self, *args) != False:
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\event.py", line 422, in dispatch_event
self._raise_dispatch_exception(event_type, args, getattr(self, event_type), exception)
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\event.py", line 476, in _raise_dispatch_exception
raise exception
File "C:\Users\[name]\AppData\Local\Programs\Python\Python38\lib\site-packages\pyglet\event.py", line 415, in dispatch_event
if getattr(self, event_type)(*args):
File "c:/Users/[name]/Documents/Projects/background_music.py", line 65, in on_update
position = self.music.get_stream_position(self.current_player)
TypeError: get_stream_position() takes 1 positional argument but 2 were given
TL;DR: Example I wanted to use as reference doesn't function - TypeError: get_stream_position() takes 1 positional argument but 2 were given.
Seems, that you're using old Arcade version. You have two options:
pip install arcade --upgradeself.music.get_stream_position()Here is the working example for old Arcade version:
import arcade
import time
SCREEN_WIDTH = 600
SCREEN_HEIGHT = 300
SCREEN_TITLE = "Starting Template Simple"
MUSIC_VOLUME = 0.5
class MyGame(arcade.Window):
""" Main application class. """
def __init__(self, width, height, title):
super().__init__(width, height, title)
arcade.set_background_color(arcade.color.WHITE)
# Variables used to manage our music. See setup() for giving them
# values.
self.music_list = []
self.current_song_index = 0
self.current_player = None
self.music = None
def advance_song(self):
""" Advance our pointer to the next song. This does NOT start the song. """
self.current_song_index += 1
if self.current_song_index >= len(self.music_list):
self.current_song_index = 0
print(f"Advancing song to {self.current_song_index}.")
def play_song(self):
""" Play the song. """
# Stop what is currently playing.
if self.music:
self.music.stop()
# Play the next song
print(f"Playing {self.music_list[self.current_song_index]}")
self.music = arcade.Sound(self.music_list[self.current_song_index], streaming=True)
self.current_player = self.music.play(MUSIC_VOLUME)
# This is a quick delay. If we don't do this, our elapsed time is 0.0
# and on_update will think the music is over and advance us to the next
# song before starting this one.
time.sleep(0.03)
def setup(self):
""" Set up the game here. Call this function to restart the game. """
# List of music
self.music_list = [":resources:music/funkyrobot.mp3", ":resources:music/1918.mp3"]
# Array index of what to play
self.current_song_index = 0
# Play the song
self.play_song()
def on_draw(self):
""" Render the screen. """
arcade.start_render()
position = self.music.get_stream_position()
length = self.music.get_length()
size = 20
margin = size * .5
# Print time elapsed and total
y = SCREEN_HEIGHT - (size + margin)
text = f"{int(position) // 60}:{int(position) % 60:02} of {int(length) // 60}:{int(length) % 60:02}"
arcade.draw_text(text, 0, y, arcade.csscolor.BLACK, size)
# Print current song
y -= size + margin
text = f"Currently playing: {self.music_list[self.current_song_index]}"
arcade.draw_text(text, 0, y, arcade.csscolor.BLACK, size)
def on_update(self, dt):
position = self.music.get_stream_position()
# The position pointer is reset to 0 right after we finish the song.
# This makes it very difficult to figure out if we just started playing
# or if we are doing playing.
if position == 0.0:
self.advance_song()
self.play_song()
def main():
""" Main method """
window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
window.setup()
arcade.run()
if __name__ == "__main__":
main()