Parallel loops

Comments

• eduard

  February 2017

  Hi Flippy,

  I don't know what your Python skills are, but I would solve this in inline_scripts accessing the sound and canvas functions directly. However, you can also consider trying to implement it with co-routines. They were designed to allow for parallel things to happen. I've never used them, so I can't help you much there. Sorry.

  Btw. Based on your description, you don't necessarily need parallelism. The tricky bit is to initialise the sketchpad and sounds at the right moment, which requires you have to access to the presentation at any time, but not necessarily access to both at the same time. ( At least I believe so).

  eduard

  Eduard

  
• Flippy

  February 2017

  Hi eduard,
  thank you for your help. I'm a total beginner in Python and OpenSesame. Can you show me how accessing the sound and canvas functions in parallel would look like in an inline_script?
  Would be helpful for me
• eduard

  February 2017

  Hey,

  To get started, you can check out the examples in the links that I provided. If I have some time later this week, I'll try to fix a little script for you.

  Eduard

  
• Flippy

  February 2017 edited February 2017

  I need some more help with my script.
  The two functions picture_show and sound_play should run in parallel.
  When I call both functions individually everything works fine.
  The problem appears when I try to call the functions in threads. The keylog implemented in the sound_play function isn't working properly anymore. How I said, when I call just the sound_play function, all works fine.
  Do you have any idea why it isn't working with multithreading?

  Here is my code:

  def sound_play():
  
      j=1
  
      while j<9:
          #Abspielen des Sounds
          sound = "0" + str(j) + "_Set1_einfach_3.5sec.wav"       #Erzeugen des jeweiligen Soundnamens
          src = pool[sound]       #Auslesen des Pfades der aktuellen Sound-Datei 
          my_sampler = sampler(src, volume=1)             #Erstellung des Samplers mit dem Pfad src
          #my_sampler.block = True
          my_sampler.play()       #Abspielen des Sounds
          j=j + 1
          #t1=clock.time()
          clock.sleep(3500)       #Wartezeit 3,5 Sekunden bis Keylog aktiv wird
  
          #Zeitfenster 4 Sekunden für Keylog
          start_time = clock.time()   #aktuelle Laufzeit in Millisekunden     
  
          print("start: " + str(start_time))  #Ausgabe Startzeit
          key_response = keyboard(keylist = ['a'], timeout=4000)  #Erzeugung des Keyloggers
          key_response.flush()
          key, end_time = key_response.get_key()  #Übergabe der aktivierten Taste inkl Zeit des Tastendrucks
  
          #end_time = end_time - 1000     #????? Zeit des Tastendrucks ist eine Sekunde zu lang
          print(key)
          print("end: " + str(end_time))      #Ausgabe der Zeit des Tastendrucks
          var.response = key      #Übergabe an globale Variable
          var.response_time = end_time - start_time   #Antwortzeit ist Differenz aus Zeit des Tastendrucks und Startzeit
          print("response: " + str(var.response_time))        #Ausgabe der Antwortzeit
          diff = 4000 - int(var.response_time)        #Differenz aus Zeitfenster von 4000ms und Antwortzeit
          print("difference: " + str(diff))           #Ausgabe der Differenz
          clock.sleep(diff)               #Warte bis nächaster Sound abgespielt wird
      return
  
  
      #Funktion für Multithreading
  def thread_start():
      #thr1 = threading.Thread(target=picture_show, args=(), kwargs={})       #Erstellung und Zuweisung der Aufgabe "Bilder" für Thread 1
      thr2 = threading.Thread(target=sound_play, args=(), kwargs={})          #Erstellung und Zuweisung der Aufgabe "SOunds" für Thread 2
      #thr1.start() #Starte Thread 1
      thr2.start() #Starte Thread 2
      #thr1.join() #Hinzufügen von Thread 1 zum Mainthread
      thr2.join() #Hinzufügen von Thread 2 zum Mainthread
      return
  
  thread_start()