using joystick input for version 1.1

[mary]

OK that helps a lot.  We won't be using the joystick like a mouse
though--we don't want a cursor on the screen and I eventually want to
just get the angle of the joystick as my output (or radians or
whatever is easiest... this is a navigational type of experiment so
we're treating the joystick as if they were pointing to a location
with it), as opposed to the position on the screen (as the
participants won't see any cursors at all).

I guess if there's no function like that then I can put in a cursor
and just calculate the angle from the center of the screen or
something, but that might just be a little more confusing for the
subjects.

Thanks!
Mary

On Sep 22, 2:49 pm, Matt Lenhart <mplenh... at gmail.com> wrote:
> Hi Mary,
>
> Since all joystick responses must be collected via InLine script in E-
> Prime 2.0, you can log whatever data you need manually. So, for
> example, say you want to present a word, and then have the subject
> move the joystick and press the 1 button to submit their response. You
> would create a TextDisplay object with a 0 Duration (no input masks),
> and then place an InLine object immediately after. Inside the InLine
> you would use script similar to the following:
>
> Dim ptCursor As Point
>
> Do
> Loop Until Joystick.Buttons And ebJoystickButton1
>
> c.SetAttrib "JoystickRTTime", Clock.Read
> c.Setattrib "JoystickRT", Clock.Read - TextDisplay1.OnsetTime
>
> Joystick.GetCursorPos ptCursor.x, ptCursor.y
>
> c.SetAttrib "JoystickX", ptCursor.x
> c.SetAttrib "JoystickY", ptCursor.y
>
> This script assumes that the TextDisplay object is named TextDisplay1.
> This script will loop continuously until a response is detected. It
> will then log the Clock.Read value (i.e., current time) and calculate
> the RT based on the current time and the onset time of the
> TextDisplay1 object. It will then get the cursor position and log the
> X and Y values.
>
> You can log additional information if necessary using the c.SetAttrib
> command. I would recommend looking at the Mouse device topic in the E-
> Basic Help (accessed via the Help menu in E-Studio) for a good idea of
> the properties that can be logged from the Joystick device (they are
> virtually identical).
>
> Please let me know if you have any further questions.
>
> - Matt
>
> On Sep 19, 4:45 pm, mary <maryesm... at gmail.com> wrote:
>
> > Thanks so much!  We got the Eprime 2.0 Standard version, so what are
> > the steps for using the joystick as input in the inline script?  I
> > already added the joystick as an input device for the Experiment
> > Object as you suggested.
>
> > Also, what kind of information should I expect to receive from a
> > joystick?  Would it be possible to just get input when the person
> > presses a button after they adjust the joystick to a particular angle?
>
> > Thanks,
> > Mary
>
> > On Sep 4, 12:42 pm, Matt Lenhart <mplenh... at gmail.com> wrote:
>
> > > Mary,
>
> > > Depending on which version of E-Prime 2.0 you ordered (i.e., Standard
> > > or Professional), the Joystick will operate a bit differently. In both
> > > versions, you will add the Joystick device via the Experiment object's
> > > Property Pages. That is, you will double-click the Experiment object
> > > at the top of the Structure window, navigate to the Devices tab, click
> > > Add, and add the Joystick.
>
> > > In E-Prime 2.0 Professional, you can then add the Joystick as an input
> > > mask in the same manner as any other response device. In E-Prime 2.0,
> > > response collection must be handled in InLine script (which we can
> > > assist you with if necessary).
>
> > > - Matt
> > > PST Technical Consultanthttp://www.pstnet.com/
>
> > > On Sep 4, 12:17 pm, mary <maryesm... at gmail.com> wrote:
>
> > > > Thanks so much for your help--we're ordering Eprime 2.0 so for future
> > > > reference, how would you make the joystick as input for eprime?
>
> > > > Thanks,
> > > > Mary
>
> > > > On Sep 3, 3:58 pm, Matt Lenhart <mplenh... at gmail.com> wrote:
>
> > > > > Hi Mary,
>
> > > > > E-Prime v1.x is capable of recording responses from a joystick, but
> > > > > only the buttons will be recognized as input. The current version is
> > > > > not capable of reading the joystick position along an x/y axis. This
> > > > > only applies to joysticks that connect through the parallel or game
> > > > > ports.
>
> > > > > Joystick support for buttons, sliders, POV controls, and x-y-z
> > > > > position, is available in E-Prime 2.0. Please seehttp://pstnet.com/products/e-prime/faq/efaq2.htmformoreinformation
> > > > > on upgrading.
>
> > > > > Please let me know if you have any further questions.
>
> > > > > - Matt
> > > > > PST Technical Consultanthttp://www.pstnet.com/
>
> > > > > On Sep 3, 1:54 pm, David McFarlane <mcfar... at msu.edu> wrote:
>
> > > > > > Mary,
>
> > > > > > > We're doing an experiment that we need joystick input to get resulting
> > > > > > > angles in degrees as our output--is this possible in Eprime version
> > > > > > > 1.1?  Would a joystick be able to give that kind of output?
>
> > > > > > I have never used a joystick in EP, so I hope someone else will weigh in
> > > > > >   here.  But if the joystick gives you xy coordinates, and if you have
> > > > > > the xy coordinate of the joystick center, then you should be able to get
> > > > > > angles in degrees just with a bit of trigonometry in an inline script.
>
> > > > > > -- David McFarlane, Professional Faultfinder
>
>
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