[directmusic] Re: directmusic Digest V1 #43
- From: "Andrew Clark" <andrewclarkis@xxxxxxxxxxx>
- To: directmusic@xxxxxxxxxxxxx
- Date: Fri, 11 Oct 2002 10:53:14 -0400
Don't know about VB, but in C++ sending a DMUS_CURVE_PMSG on the appropriate
PChannel for controller 7 (volume) or 11 (expression) works great for fades
of various durations and styles (linear, log, exp). Wicked bonus features:
1) you can set a DMUS_CURVE_START_FROM_CURRENT flag that automatically sets
the start value to whatever the current level is, 2) you can use the
wMergeIndex for additive control changes (i.e. wMergeIndex 0 is the overall
band part level, wMergeIndex 1 is the fader level, wMergeIndes 2 is an
amplitude LFO, wMergeIndex 3 is linked to a game parameter... mmm).
Love that DirectMusic!
Andrew
>From: FreeLists Mailing List Manager <ecartis@xxxxxxxxxxxxx>
>Reply-To: directmusic@xxxxxxxxxxxxx
>To: directmusic digest users <ecartis@xxxxxxxxxxxxx>
>Subject: directmusic Digest V1 #43
>Date: Fri, 11 Oct 2002 02:04:39 -0500 (EST)
>
>directmusic Digest Thu, 10 Oct 2002 Volume: 01 Issue: 043
>
>In This Issue:
> [directmusic] Re: Fade out and stop
>
>----------------------------------------------------------------------
>
>From: "Ciaran Walsh" <ciaran@xxxxxxxxxxxxxx>
>Subject: [directmusic] Re: Fade out and stop
>Date: Thu, 10 Oct 2002 12:54:19 +0100
>
>
>I posted this back in June in response to another question on the subject -
>the script example is roughly what you need I think and is pretty
>thorough...
>
> >>
>
>For POW (PC and Xbox) I needed to use a lot of fades in and out for
>conversations, cut
>scenes etc, many of them events that were skippable. This meant I had the
>problem of a fade in being triggered when a fade out was still playing,
>causing an unpleasant stuttering as the volume controllers clashed. The
>system I devised to solve this was very similar to what Bjorn has done in
>his script but on a slightly larger scale as it's designed to accomodate
>lots of different circumstances.
>
>Basically I created what I call my FadeManager script which uses a set of
>timer segments, variables and routine calls to keep track of the fades,
>queue up any new fades triggered during existing fades and ensure there are
>no clashes. Other than having a built in means of cutting off fades while
>they're playing (any chance of this MS people?) it's the best way I could
>think of. Here's a bit of sample script:
>
>note: another script sets FType and calls FadeManager
>
>Dim FType ' Fade Type, in this case Fade In, Fade Out Short or
>Fade Out
>Long
>Dim FT ' true or false - whether a Fade Timer is currently playing
>Dim FWaiting ' true or false - whether there is a fade in the queue
>Dim FadeVol ' result of GetMasterVolume, used in FadeManager
>routine to
>establish Fade state
>
>sub StartFT
> if FType = 1 then
> SetMasterVolume 0, 1500
> FadeTimer2.play IsSecondary ' segment with call to FTOff
> after 1500ms
>(clocktime)
> FT = 1 ' a Fade Timer is playing
> elseif FType = 2 then
> SetMasterVolume -9600, 1500
> FadeTimer2.play IsSecondary
> FT = 1
> elseif FType = 3 then
> SetMasterVolume -9600, 3000 ' segment with call to FTOff
> after 3000ms
>(clocktime)
> FadeTimer1.play IsSecondary
> FT = 1
> end if
>end sub
>
>sub FTOff
> FT = 0 ' Fade Timer has finished
> if FWaiting = 1 then ' if there's something in the
> queue
> StartFT ' start next Fade Timer
> FWaiting = 0
> end if
>end sub
>
>sub FadeManager
> FadeVol = GetMasterVolume ' what is current Volume
> if FadeVol = 0 then
> if FType = 1 then
> FT = 0 ' if the last fade was a Fade
> In it's finished
> end if
> elseif FadeVol = -9600 then
> if FType > 1 then
> FT = 0 ' if the last fade was a Fade
> Out it's finished
> end if
> end if
> if FT = 1 then ' fade must be in progress
> FWaiting = 1 ' queue the new fade
> elseif FT = 0 then ' fade must not be in progress
> StartFT ' start the new fade now
> end if
>end sub
>
>I've tried very hard to break this and it always seems to work! Pretty
>good
>example of the kind of control you can have with scripting I reckon....
>
>Cheers,
>Ciaran
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