deletion while moving...

Igor Couto igor at pixelmedia.com.au
Wed Dec 17 18:14:25 CST 2003


Hi all,

I have a button that has a rather long script, which includes things 
like getting the button to move to different places in the card. This 
script is recursive: when it gets to the end, it calls itself again. I 
guess, a very simple example that illustrates roughly what is happening 
would be something like this:

on mouseUp
	move me relative 300,0 in 15 seconds
	move me relative -300,0 in 15 seconds
	send "mouseUp" to me in 1 tick
end mouseUp

The problem is that I also have to delete this object at certain times. 
Hmmm, not as simple as it may look... If I try to delete a button while 
it's moving, it tells me that I can't do that, because the object is 
locked (I guess because its script is executing). So I guess all I need 
to do is halt the script...

The first thing I tried was to place a 'flag' in the button (as a 
custom property), that would advise the object when NOT to loop  - and 
then, to delete itself:

on mouseUp
	if not(the cStopMoving of me) then move me relative 300,0 in 15 seconds
	if not(the cStopMoving of me) then move me relative -300,0 in 15 
seconds
	if (the cStopMoving of me) then
		send "delete me" to me in 10 ticks
	else
		send "mouseUp" to me in 1 tick
	end if
end mouseUp

This approach had 2 problems: first, it didn't work (the button would 
not delete itself in the end). Second, it meant that even after the 
flag was set, I still had to WAIT until the movement was finished (15 
seconds!) until the deletion was attempted.

So, I started trying to use a second button - a 'delete' button - to 
try and STOP the movement of the first 'animated' button, and then do 
the deletion on-the-spot.

The script in the first button now goes:

on mouseUp
	move me relative 300,0 in 15 seconds
	if not(the cStopMoving of me) then move me relative -300,0 in 15 
seconds
	if not(the cStopMoving of me) then send "mouseUp" to me in 1 tick
end mouseUp

The script in the 'delete' button goes:

on mouseUp
	set the cStopMoving of button "animatedBtn" to true
	stop moving button "animatedBtn"
	delete button "animatedBtn"
end mouseUp

Hmmm, better results: now, the animated button DOES STOP moving 
immediately, however, still NO DELETION!

Perhaps I need to give some time for the script of the 'animated' 
button to do all its flag-checking, and run its course, before I try to 
delete it - my thinking here is that I might be trying to delete the 
button while it's locked because its script has not yet finished 
executing. Ok, so I changed the 'delete' button script to:

on mouseUp
	set the cStopMoving of button "animatedBtn" to true
	stop moving button "animatedBtn"
	put "delete" && the long id of button "animatedBtn" into lMessage
	send lMessage to this stack in 1 second -- should be plenty of time!
end mouseUp	

Guess what?: it still DOES NOT DELETE!!!

What gives?

I feel like I'm overseeing something basic...

Any help GREATLY appreciated!

Cheers,

Igor de Oliveira Couto
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