WorldViz User Forum - Distance or position based event?

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Distance or position based event?

We're trying to play a sound when the viewpoint reaches a certain point in the virtual environment. Do we have to register a custom event to do this? Is there a way to use a loop without freezing the program?

It seems like you simply want to run some code every frame. In that case you can register a timer function, which will be called every frame. Here is an example that plays a sound when the Z position of the view passes 3 meters:

Code:

import viz

viz.go()



viz.add('tut_ground.wrl')



def CheckView():

        """Plays a sound when Z position of view is greater than 3"""

        x,y,z = viz.MainView.getPosition()

        if z > 3:

                # Play sound and unregister timer function

                viz.playsound('elaugh1.wav')

                return vizact.EventRemove

vizact.ontimer(0,CheckView)