Also check out the cpuHogTicks. Reda more in the online help
John
> -----Oprindelig meddelelse-----
> Fra: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]På vegne
> af James Newton
> Sendt: 2. november 2000 10:53
> Til: [EMAIL PROTECTED]
> Emne: Re: <lingo-l> Timing and Sound
>
>
> Matt Lester <[EMAIL PROTECTED]>
> > I'm looking for some feedback on the 'most' accurate & consistant
> > method of playing a click sound at a set tempo for a metronome style
> > application.
> > I've ... had the most success with the milliseconds. If anyone has
> > any ideas of the best way to do this that would be great.
>
> Hi Matt,
>
> All methods are likely to break down if there is any other activity on
> your computer. Director regularly gives control back to the
> System, and
> the System may be irregular about how long it takes to return control.
> This means that, from time to time, you will experience a
> longer-than-usual pause. This is true even with Director 8's timeOut
> objects.
>
> (An extreme example occurred to me yesterday : at precisely
> midnight, a
> dialog box opened asking me to register a program that I had installed
> two weeks ago. My Director movie was interrupted until I had
> dismissed
> the dialog).
>
> To ensure a strict beat, you might want to use a tight repeat loop.
> This will prevent any other activity from occurring (except from an
> occasional check from Director that you have not pressed the Control-.
> key combination which halts playback).
>
> Normally, using a tight repeat loop is not good practice. In
> this case
> it might be unavoidable. The rest of your movie should be designed to
> be compatible with this. In particular, the movie will
> receive no frame
> events (stepFrame, prepareFrame, enterFrame, exitFrame) while the
> metronome is running.
>
> If you need animation, this should be controlled from within
> the repeat
> loop itself. The more animation you require, the less
> regular your beat
> is likely to be, since you will be re-introducing other activity.
> However, you will be able to control exactly what other
> activity occurs,
> and so you should be able to ensure that this activity is completed
> before the next click is due.
>
> I include a first draft approach below. I have not used the D8 sound
> Lingo, since you do not mention whether you are using D7 or D8.
>
> Cheers,
>
> James
>
> --------------------------------------------------------------
> ----------
>
> global gNextClick
> global gClickDelay
>
> on startMovie
> gNextClick = the milliseconds
> gClickDelay = 200 -- 300 beats per minute
> end
>
> on startMetronome
> repeat while TRUE
> if the mouseDown then exit
> timeElapsed = the milliseconds - gNextClick
> if timeElapsed > 0 then
> gNextClick = gNextClick + gClickDelay
> puppetSound 1, "Click"
> end if
> end repeat
> end startMetronome
>
>
>
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>
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