How to switch scripts on and off

[jbgeluid]

Is there a way to switch scripts on and off with buttons? I did read the manual...

[brianc]

You could create a variable called run_script or something, and start those scripts with:

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if(!run_script) return;

Then just set run_script to 1 when you want it to run, and 0 otherwise.

[jbgeluid]

brianc,

thanks for your reply, but can you be more specific? I'm a beginner, sorry..

[Macciza]

Hi
Brianc has shown a way for scripts to only run if the run_script variable is set - say by a switch
This lets you have a script for say an object that will only run when the flag is set - say by using a Switch or set from another script

If you mean run a script in response to a switch set the script up to execute On Expression and Switch.x (or whatever) to use your switch to run it . .
Cheers
MM

[brianc]

brianc,

thanks for your reply, but can you be more specific? I'm a beginner, sorry..

Sure, here's an example template that (I hope) demonstrates how this can be done.

[Phil999]

excellent. So simple.

Now, what if you don't have a switch as 'trigger', but a Knob object? A Fader object has a 'touch'-variable z, but the Knob object not. Is it possible to fake a z variable with a Knob object? For example, when Knob.x increases or decreases? How to you express that? Or is there a simpler method?

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if (Knob.x ++) return;
if (Knob.x --) return;

The code is wrong, but you probably understand what it should do. If Knob.x changes, return (don't continue with the script). If Knob.x remains the same, continue with the script.

[brianc]

Now, what if you don't have a switch as 'trigger', but a Knob object? A Fader object has a 'touch'-variable z, but the Knob object not. Is it possible to fake a z variable with a Knob object? For example, when Knob.x increases or decreases? How to you express that? Or is there a simpler method?

It's a little ugly, but I guess my approach would be to have a script that runs whenever Knob.x changes that updates a variable that stores the time at which the value was last changed. So something like:

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last_change = time;

Then in the script that was dependent on that knob activity, you could put something like:

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if(time - Knob.last_change > 2) return;

Which will disable that script if the knob hasn't been changed in the last 2 seconds. With a really small threshold, you can have this be sensitive to within a few milliseconds.

[Phil999]

good idea. I tried it out, it doesn't work yet, but using a variable, and an expression-x-script for the 'trigger'-knob is a good method.

I also tried a variable (touch) and two scripts (touch_on, touch_off), but this also didn't work yet.

It shouldn't be too difficult, I'll get it soon I guess. Thank you for your help, very appreciated.

[jbgeluid]

Thanks Brianc and Phil999 for your input! This realy helps.

Jurgen

[Phil999]

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if(time - Knob.last_change > 2) return;

Which will disable that script if the knob hasn't been changed in the last 2 seconds. With a really small threshold, you can have this be sensitive to within a few milliseconds.

I want to disable the script when the knob changes, so it's

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if(time - Knob.last_change < 2) return;

That is working. Very nice.

Unfortunately, the script I want to prevent being executed does receive MIDI and moves the 'trigger'-knob - I'm running again in a feedback loop, something I wanted to prevent in the first place. My fault, I didn't expect that. I have to rethink this matter ...

Thanks again, your method is working.

My problem is described here:
http://liine.net/forum/viewtopic.php?f=25&t=1732