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  #1  
Old 01-12-2010, 12:58 PM
starbug starbug is offline
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Join Date: Dec 2009
Posts: 5
exiting a yield statement

Hello there,

I have a question regarding exiting a yield statement, after a certain time elapsed. I am changing a global variable according to a keypress (using yield viztask.waitKeyDown) within a function, if that keypress should not happen, I want to exit the yield statement after a certain time interval. And continue the protocol with the unchanged global variable.
I might be wrong using yield, and there is some other way (I read about python threading?Running a timer parallel to yield?), could you point me to some example code? I couldn't find this scenario in the tutorial.
Thank you.



Code:
Step=1
Motion = 15
def control():
	global Motion
	..... #dosomething with Motion
	for i in range(1,x)
		d = viz.Data()
		yield viztask.waitKeyDown(['y','n'],d) #or, if no key was pressed, after 2 sec exit yield
		if d.key == 'y':
			Motion = Motion - Step
		elif d.key == 'n':
			Motion = Motion + Step
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  #2  
Old 01-12-2010, 02:19 PM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
Have a look at the viztask.waitAny condition. I believe the example on that page does exactly what you want.
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  #3  
Old 01-12-2010, 03:16 PM
starbug starbug is offline
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Join Date: Dec 2009
Posts: 5
Thank you! that I must have overlooked!
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