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ShifatT

Thu Feb 28, 2013 5:37 pm


Can't click GUI Buttons if a loop is running - Traffic Light System

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What I am doing:
I am trying to make a Traffic Light System for class. 

Problem : 
When a loop is running, I cannot click any buttons until the loop ends. 
Eg: If I start Auto-Mode, I cannot click any buttons until the for-loop ends.

What I did: 
Remove the loop - Which defeated the purpose of some of the features of the program

Code: Attatched

Turing Version : 
4.1.2, 4.0.5 at School.[/u]


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Tony

Thu Feb 28, 2013 6:35 pm


RE:Can\'t click GUI Buttons if a loop is running - Traffic Light System

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programs are linear and do one thing at a time. If the program is busy spending time inside of for-loop, it will not get to the code that handles the buttons (or anything else) for a while.

The solution -- don't block on long running loops.


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ShifatT

Thu Feb 28, 2013 7:58 pm


Re: RE:Can\'t click GUI Buttons if a loop is running - Traffic Light System

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programs are linear and do one thing at a time. If the program is busy spending time inside of for-loop, it will not get to the code that handles the buttons (or anything else) for a while.

The solution -- don't block on long running loops.

So I just leave it as it is?


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Tony

Thu Feb 28, 2013 9:22 pm


RE:Can\'t click GUI Buttons if a loop is running - Traffic Light System

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If you understand what's going on and that is acceptable to you.

Basically in a scenario such as
[code]
loop
  do_a
end loop

loop
  do_b
end loop
[/code]

B has to wait for A to completely finish. An alternative is to design your code to be along the lines of
[code]
loop
  do_a
  do_b
end loop
[/code]

This way A and B alternate taking steps, and both get to make some progress, without waiting for the other for too long.