wait on a condition

[samsanto]

Hi Jeremy,

I am having difficulty figuring out how to wait() on a specific condition. Basically I have a long audio file playing in my study. At random times, it pauses and the participant has to answer a question in the form of choosing from 3 images in a selector. Then the audio immediately resumes. If they take more than 30 seconds, the audio will resume and no response is recorded. I am having difficulty figuring out the logic to this “wait,” as I want to wait on the selector OR 30 seconds. This is what I have so far, which I feel like is close, but is not working for the 30 seconds part (only the selection):

newTimer("waitSelector", 30000) 
.start()
,
newSelector("images").add( getImage("on"), getImage("mid"), getImage("off"))
.log()
.wait(getTimer("waitSelector").test.running() && !getSelector("images").test.selected())
,

Here’s my demo link if that will help: https://farm.pcibex.net/r/PRLnQL/

Thanks,
Sam

[Jeremy]

Hi Sam,

PennController’s top-down write-and-execute style makes this kind of disjunctive logic a little tricky. In your case, I suggest you just wait for the Timer element, and have the Selector element halt the timer upon selection:

newSelector("images")
  .add( getImage("on"), getImage("mid"), getImage("off"))
  .log()
  .callback( getTimer("waitSelector").stop() )
,
newTimer("waitSelector", 30000) 
  .start()
  .wait()

Also, you cannot use javascript’s ! operator on PennController commands (see this guide). If you want to negate a test, just replace test with testNot

Jeremy

[Author]

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