[open] Canvas timeout with no mouse response

Comments

• sebastiaan

  September 2013 edited 11:47AM

  Hi Allison,

  The error occurs because position is None when a timeout occurs. Therefore, you will get an error if you try something like position[0] after a timeout, even though this works fine after a response has been given, in which case position will be an (x,y) tuple. So you will need to explicitly check whether position is None, and (in your case) break the loop when this happens.

  while True:
      button, position, timestamp = my_mouse.get_click(timeout = 2000)
      if position == None:
          disc_response = 'na'
          break
  

  See also:

  • http://osdoc.cogsci.nl/python/mouse/#mouse.get_click

  However, I don't think you even need a loop in your case, because you check only once for a button press, and then move on. Right? So something like the following structure should do equally well:

  button, position, timestamp = my_mouse.get_click(timeout = 2000)
  if position == None:
      disc_response = 'na'
  else:
      # Process the response here
  

  And finally, don't forget to set the variable disc_response at the end of the script, so it can be logged and will be available elsewhere in the experiment:

  exp.set('disc_response', disc_response)
  

  See also:

  • http://osdoc.cogsci.nl/usage/variables-and-conditional-statements/#gettingandsettingvariablesininline_scriptitems
  • http://osdoc.cogsci.nl/python/experiment/#experiment.set

  Hope this helps!

  Cheers,
  Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• allision

  November 2013 edited 11:47AM

  Thanks for the feedback, Sebastiaan. Here's the code that did the job:

  my_canvas_inter.text('Which one had more dots?', x = x_half, y = y_quarter)
  my_canvas_inter.prepare()
  t = my_canvas_inter.show()
  
  my_mouse = mouse(exp)
  my_mouse.set_visible()
  my_mouse.set_timeout(timeout=5)
  my_mouse.set_pos(pos=(x_half,y_half))
  
  start_time = self.time()
  if my_mouse.flush() == False:
      click = None
  elapsed_time = 0
  while elapsed_time <7000:
      if click == None:
          click, position, timestamp = my_mouse.get_click()
      if click ==1:
          if ((x_eighth) < position[0] < (x_eighth*3)) and ((y_quarter) < position[1] < (y_quarter*3)):
              break
          elif ((x_eighth*5) < position[0] < (x_eighth*7)) and ((y_quarter) < position[1] < (y_quarter*3)):
              break
          else:
              click, position, click_end_time = my_mouse.get_click()
      elapsed_time = self.time() - start_time
  print click, "click"
  if click == None:
      disc_response = 'na'
  if click == 1:
      if ((x_eighth) < position[0] < (x_eighth*3)) and ((y_quarter) < position[1] < (y_quarter*3)):
          disc_response = 'L'
          sel_value = number1
          if number1 > number2:
              trial_acc = 1
          elif number1 < number2:
              trial_acc = 0
          elif number1 == number2:
              trial_acc = 'na'
      elif ((x_eighth*5) < position[0] < (x_eighth*7)) and ((y_quarter) < position[1] < (y_quarter*3)):
          disc_response = 'R'
          sel_value = number2
          if number1 < number2:
              trial_acc = 1
          elif number1 > number2:
              trial_acc = 0
          elif number1 == number2:
              trial_acc = 'na'
  

  Now that I have that figured out, I have another question. I had added a form_multiple_choice item to my experiment. However, the information (i.e., the form title, response variable, button text, question, and response options) in this item is being inexplicably deleted each time I try and open the same saved file. This happens on the same computer I used to save the experiment in the first place. I am using the most recent version of OpenSesame on a Dell running Windows 7. Any insight, or is this just a glitch?

  Thanks!
  Allison
• sebastiaan

  November 2013 edited 11:47AM

  I had added a form_multiple_choice item to my experiment. However, the information (i.e., the form title, response variable, button text, question, and response options) in this item is being inexplicably deleted each time I try and open the same saved file.

  This is indeed a known bug (issue). It has been fixed in the development release, so you could try the latest development snapshot of 2.8.0.

  • http://osdoc.cogsci.nl/getting-opensesame/development-snapshots/

  Alternatively, if you prefer to stick to the stable release, you could download the latest source code from GitHub and replace only the plugins/form_multiple_choice folder in your current installation of OpenSesame.

  • https://github.com/smathot/OpenSesame

  Cheers!
  Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!