Mouse Click & Target Task

[Lucas Hutchison]

Currently I am having trouble capturing the x, y coordinates of the
mouse.  I currently have something like this:


dim rtmouse as MouseResponseData

set rtmouse = CMouseResponseData(?not sure what to put in here since
the documentation i found using this had something that gave me errors
at run?)


On Oct 3, 6:03 pm, Paul Groot <pfc.gr... at gmail.com> wrote:
> Hi Lucas,
>
> After capturing a mouse click response you could immediately retrieve
> the mouse position using a few lines of script:
>
> dim ptMouse as Point
> Mouse.GetCursorPos ptMouse.x, ptMouse.y
>
> To determine if this point is inside the drawn circle you could use a
> simple calculation: just calculate the (squared) distance between the
> center of the circle and the hit point:
>
> Const radius = 10
> dim dx as long
> dim dy as long
> dx = ptMouse.x - center.x
> dy = ptMouse.y - center.y
> if (dx*dx + dy*dy)<=radius*radius then
>    ... inside circle
> else
>   ... outside circle
> end if
>
> I'm not using a square root because it is computationally intensive
> and not required because the comparison also holds for squared values.
>
> cheers
> paul
>
> 2011/10/3 Lucas Hutchison <lahut... at mtu.edu>:
>
> > I am working on a small experiment where I would like the following:
>
> > -Target (20 x 20 pixel red circle) appears at a random location on the
> > screen
> > -when the target is presented, the participant must click the target
> > -once the participant clicks, the next randomly located target will
> > appear (and the prior target is removed), and the process repeats for
> > n number of trials needed
>
> > I am able to display the targets at random locations, but I am unsure
> > of how to record the X and Y positions of the click and how to compare
> > those to the actual X and Y positions of the target to determine
> > accuracy.  I would like to record both the response time and the click
> > accuracy.
>
> > I have been trying to find resources online and in the help
> > documentation, but much of the online code is older than my version
> > and some of the methods/ objects they use have been renamed.
>
> > I am using E-Prime version 2.0.8.74
>
> > Thanks for the help!
>
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