[solved] Code to exit the loop after defined time

mukeshmakwana

Hi, I recently started using OpenSesame. I am using OpenSesame 2.94

I am trying to design a simple experiment where a sound clip plays for certain duration (say 10 sec) and while the sound is being played participants are suppose to see a series of visual stimuli.

I tried using the sampler and it plays the clip, and i present the visual stimuli using a loop but i want the loop to break as soon as the sound clip stops..Can anyone suggest me how to break the loop based on specified time using inline script ?

Josh

Hi,

You can keep track of time, while being in a loop.

The way to do that, is to first indicate a start time right before you enter the loop, by means of start_time = self.time().
Of course you also need to know the duration of your sound stimulus. Let's call the duration duration. Your loop would look something like this:

   end_loop = False
   duration = 3000
   start_time = self.time()

   while end_loop == False:
          current_time = self.time() - start_time
          if current_time >= duration:
                 end_loop=True

Does this make sense?

Cheers,

Josh

mukeshmakwana

Thanks a lot Josh !

GuidoCor

Also you can use the sampler function "is_playing".

This is an example of and old experiment that used that : ) Hope It will help to you!

audio = self.get("audio")
my_canvas.image(exp.get_file(imagen), y = 325)

my_sampler = sampler(exp, exp.get_file(audio))
my_sampler.play()

# this will display the canvas until the audio stops 
#  you can put extra conditions to break  
while my_sampler.is_playing() == True:
    my_canvas.show()