Drag & drop end trial subject to specific condition

[Michael]

Hi,

• You might want to look at this thread, because this sort of code can fail if the subject moves the mouse quite quickly:

Click and Drag lag

OK, this isn’t a bug per se but the inherent fact that one can move the mouse faster than the screen can update. i.e. what is happening here is that you have relatively small stimuli and a screen that I guess is updating at the typical rate of 60 Hz. So you can detect a click in a stimulus and then move the stimulus to the current mouse position. But on the next screen refresh, the new mouse position can easily have moved beyond the boundaries of the stimulus, so the .isPressedIn() check fails. …

• You will need to implement some sort of “snap to grid” feature, as you can’t rely on the subject being able to exactly drop the stimulus in the precise location you need in order to be able to check in code if it is in the correct place:

Click and drag images to lock in a specified area

It can certainly be done but will be complicated I can give you some general pointers but realistically, this is code that should be developed and tested interactively, rather than something I could just type out in one go. I’d suggest you start by associating each stimulus with its ordinal location, say counting lifting to right from 0 to 19: stimuli = [square0, square1, square2, …] # up to 20, you already have this list # create a dictionary that associates each stimulus with an ordinal #…

• Lastly, it is best to share your code by pasting in the text rather than using screenshots. From a screenshot, a person can’t make small modifications to your code without typing it all out from scratch.

Please surround python code with backticks

When you include python code on this forum please put triple “backticks” like this ``` on the line before and the line after your code. If you’ve done it correctly then your code will appear in a grey box with correct indentation like this (check the preview of your post on the right hand side before posting it) and other people will be better able to work out what might be right/wrong with your code. if myVal==True: break If you’ve already posted something that didn’t follow this rule th…