using i900 joystick in a taskFunction

[krimble]

Hi,

What I'm trying to do is, using the buttons on the joystick to scale my virtual world. I'm using a task know, but it seems that the event doesn't get triggered when using "viz.SENSOR_UP_EVENT". If I use "viztask.waitSensorDown" then I don't know what to put in it as a button. I've tried the state things from the manual "joystickSensor.get()[7]" but it doesn't give me the actual pressed button wich I have to put in, right?

def scaleOnSensorEvent() :
	dataObject = viz.Data
	sensorData = joystickSensor.get()

	while True :
		yield viztask.waitEvent(viz.SENSOR_UP_EVENT, dataObject) 
#		yield viztask.waitSensorDown(joystickSensor, button??, dataObject)
		print "something"

if viz.get(viz.TRACKER):

	headSensor = viz.add('intersense.dls')
	viz.tracker()
	headSensor.reset()

	joystickSensor = viz.add('intersense.dls')
	viz.tracker()
	joystickSensor.reset()

viztask.schedule(scaleOnSensorEvent)

thanks for your help

[farshizzo]

The intersense.dls plugin does not generate sensor up/down events. You need to manually check the button state by examining the value at index 7 of the data array. The documentation for the intersense plugin has sample code showing how to check for the button state of the joystick.

[krimble]

Thank you,
I've used a timer now, and it works. It would be handy though to be able to use a task with the IS-900 joystick (wand). The use of tasks makes it a whole lot easier, great concept!

[farshizzo]

You can create your own custom task conditions. For example, here are two conditions that wait for an IS900 button to be pressed or released:

class waitIS900Down( viztask.Condition ):
    def __init__( self, sensor, button ):
        self._sensor = sensor
        self._button = button
   
    def update( self ):
        return int(self._sensor.getData()[7]) & self._button

class waitIS900Up( viztask.Condition ):
    def __init__( self, sensor, button ):
        self._sensor = sensor
        self._button = button
   
    def update( self ):
        return (int(self._sensor.getData()[7]) & self._button) == 0

Here is code that shows how to use it:

.
.
.
yield waitIS900Down(isense,1)
print 'Button 1 pressed'
yield waitIS900Up(isense,1)
print 'Button 1 released'
.
.
.