Exit Repeat

[Mark Smith]

In fact, I tested this, and it works. Though it'd still be cleaner,  
somehow, to be able to test for the exit condition within the loop.

Mark

On 20 Mar 2006, at 01:08, Geoff Canyon wrote:

> Close, but I don't think this will work. The exit to top in the  
> escapeKey handler will exit that handler, not the  
> handlerWithRepeatIMightWantToInterrupt. Instead, set a custom  
> property in the escapeKey handler, then check that property in your  
> handlerWithRepeatIMightWantToInterrupt handler and exit there if it  
> is set. My previous example did something like this with a local  
> variable, but a custom property would work as well.
>
> gc
>
> On Mar 19, 2006, at 2:51 PM, Mark Smith wrote:
>
>> 'wait 0 ticks with messages' was the thing - thanks!
>>
>> So a general (stack-wide) approach might be to use a custom prop  
>> in the stack:
>>
>> in a control, card or stack:
>> on handlerWithRepeatIMightWantToInterrupt
>>   set the canInterrupt of this stack to true
>>   repeat forever
>>     wait 0 ticks with messages
>>     doRepeatStuff
>>   end repeat
>>   set the canInterrupt of this stack to false
>>   otherStuff
>> end handlerWithRepeatIMightWantToInterrupt
>>
>> then in the stack script
>>
>> on escapeKey
>>   if the canInterrupt of me then
>>     set the canInterrupt of me to false
>>     exit to top
>>   end if
>> end escapeKey
>>
>>
>> Mark
>>
>> On 19 Mar 2006, at 22:24, Geoff Canyon wrote:
>>
>>>
>>> On Mar 19, 2006, at 12:04 PM, Mark Smith wrote:
>>>
>>>> Andre, the trouble is that in the case of interrupting a repeat  
>>>> loop, you can't test for whether the escape key is down like you  
>>>> can with control/option/command.
>>>>
>>>> So use control/option/command, of course :)
>>>> But the escape key would be more natural...
>>>
>>> This works:
>>>
>>> local sGetOut
>>>
>>> on mouseUp
>>>   put empty
>>>   put false into sGetOut
>>>   repeat 20000
>>>     wait 0 ticks with messages
>>>     if sGetOut then exit to top
>>>   end repeat
>>>   put "completed"
>>> end mouseUp
>>>
>>> on escapeKey
>>>   put true into sGetOut
>>> end escapeKey
>>>
>>> Note that the escapeKey message is delivered to the focused  
>>> control, so you can't put it in a button and expect it to work  
>>> reliably. Put the above in the card script, then click anywhere  
>>> in the card. Some time later "completed" will show in the message  
>>> box. Then click the card again and then press the escape key. You  
>>> won't get the "completed" text.
>>>
>>> gc
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