WorldViz User Forum - Simple Joystick Question

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Simple Joystick Question

Hi all,

I have a question concerning the joystick buttons which is probably rather easy to be answered: How can I make my script to wait for the user to press one of the two buttons of a connected joystick.

My guess was:

Code:

import viz

import vizjoy

import viztask



viz.go()



joystick = vizjoy.add()



def WaitForButtonPress():

        yield viztask.waitButtonDown(None)

        print "Done."

        viz.quit()

        

viztask.schedule( WaitForButtonPress() )

It works fine if one replaces the "Button" by "Key" in the yield-expression, so I would have expected it to run for the joystick buttons as well. However, it does not, so what works?

The viztask.waitButtonDown command waits for a GUI button object to be pressed. To wait for a joystick button press in your task function you can create a custom condition. The task function in the following example waits for either buttons 1 or 2 to be pressed before it continues:

Code:

import viz

import viztask

import vizjoy



viz.go()

joystick = vizjoy.add()



def buttonTask():

        

        d = viz.Data()

        waitButton1 = waitJoyButtonDown(joystick,1)

        waitButton2 = waitJoyButtonDown(joystick,2)

        

        yield viztask.waitAny([waitButton1,waitButton2],d)

        

        if d.condition is waitButton1:

                print 'button 1 was pressed'

        else:

                print 'button 2 was pressed'

                

        viz.quit()        



class waitJoyButtonDown( viztask.Condition ):

    def __init__( self, joy, button ):

        self._joy = joy

        self._button = button

   

    def update( self ):

        return self._joy.isButtonDown(self._button)



viztask.schedule( buttonTask() )

Hi Jeff,

thanks for the clarification on the viztask.waitButtonDown command and also for your code which works fine for me! :)