By kellingwolf00013 - 2/4/2015
Is there a method by which I can move an object slowly across the screen within a trial. I attempted to use an shape element with the position tied to a counter and repeat the call for the element within the stimulusframes argument in the trial. However, it seems to stay where it is.
Thanks,
<block test>
/trials = [1-5= testtrial]
</block>
<trial testtrial>
/ stimulusframes = [1-1000=sequence(erase,blocky)]
/ validresponse = (" ")
/ responsetime = 0
</trial>
<shape blocky>
/ shape = rectangle
/ size = (50,20)
/ color = (0,0,0)
/ position = (expressions.xplus, expressions.yplus)
</shape>
<expressions>
/ xplus = 100-1*round(counter.county/50)
/yplus = 50
</expressions>
<counter county>
/ selectionrate = always
/ items = (1-1000)
/ select = sequence
</counter>
<shape erase>
/ shape = rectangle
/ size = (100%,100%)
/ color = (255,255,255)
/ position = (expressions.xplus, expressions.yplus)
</shape>
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By Dave - 2/4/2015
> Is there a method by which I can move an object slowly across the screen within a trial.
No, there isn't. You either (1) need to set up multiple <shape>s, one for each "step" in the movement sequence, and display them all successively via /stimulustimes, or (2) run a <trial> element displaying a single <shape> & lasting one frame repeatedly in a loop.
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