QT time tracking

[sean]

Hi all,
I'm trying to execute various commands based on the time of a QT movie. The
owner wants to stay away from cuepoints and I wanted to stay away from a
massive "if then" mess. The following works, but I see potential problems,
especially if other processor intensive items are being executed at the same
time. I don't like the fact it gets called so often. Any thoughts, insights,
suggestions appreciated.
Thanks,
Sean

--on QT sprite
property my, pTimeList

on beginSprite me
my=sprite(me.spriteNum)
pTimeList=[99:"nothing", 200:"nothing", 300:"beep"]
timeOut("timer").new(1, #getTime, me)
end

on getTime me
if my.movieRate=1 then
ct = my.movieTime
t = getaProp(pTimeList, ct)
if t<> void then
do t
end if
end if
end

on endSprite me
timeout("timer").forget()
end

[JB]

The biggest problem is expecting an exact movietime match while
monitoring a value incrementing 1000 times a second, odds are the exact
times in pTimeList=[99:"nothing", 200:"nothing", 300:"beep"]
will be missed. Actually only movitimes a multiple of 1000/ the
movierate will be encountered.

IF the movie is guranteed to play in a linear fashion only the next
value in a sorted list must be watched for.

You can also do the periodic movietime chacks at the director score
frame rate ( a reasonable interval) with a score or sprite script.



-- try this untested modified script's approach


--on QT sprite
property my, pTimeList, nextTimeEntry -- added

on beginSprite me
my=sprite(me.spriteNum)
pTimeList=[99:"nothing", 200:"nothing", 300:"beep"]
nextTimeEntry = 1 -- added look for first list entry
end

on prepareFrame -- of director score



on getTime me
if my.movieRate=1 and nextTimeEntry then
ct = my.movieTime
if ct >= getPropAt(pTimeList, nextTimeEntry) then -- at time
do getProp(pTimeList, getPropAt(pTimeList, nextTimeEntry))
-- increment time pointer
if nextTimeEntry < count(pTimeList) then
nextTimeEntry = nextTimeEntry + 1
else
nextTimeEntry = 0 -- turn it off
end if
end if
end if
end

[sean]

Brilliant. Thanks JB.
Much cleaner.

"JB" <lingoguy@sbcglobal.net> wrote in message
news:lingoguy-7E5741.20420701122003@forums.macromedia.com...

> The biggest problem is expecting an exact movietime match while
> monitoring a value incrementing 1000 times a second, odds are the exact
> times in pTimeList=[99:"nothing", 200:"nothing", 300:"beep"]
> will be missed. Actually only movitimes a multiple of 1000/ the
> movierate will be encountered.
>
> IF the movie is guranteed to play in a linear fashion only the next
> value in a sorted list must be watched for.
>
> You can also do the periodic movietime chacks at the director score
> frame rate ( a reasonable interval) with a score or sprite script.
>
>
>
> -- try this untested modified script's approach
>
>
> --on QT sprite
> property my, pTimeList, nextTimeEntry -- added
>
> on beginSprite me
> my=sprite(me.spriteNum)
> pTimeList=[99:"nothing", 200:"nothing", 300:"beep"]
> nextTimeEntry = 1 -- added look for first list entry
> end
>
> on prepareFrame -- of director score
>
>
>
> on getTime me
> if my.movieRate=1 and nextTimeEntry then
> ct = my.movieTime
> if ct >= getPropAt(pTimeList, nextTimeEntry) then -- at time
> do getProp(pTimeList, getPropAt(pTimeList, nextTimeEntry))
> -- increment time pointer
> if nextTimeEntry < count(pTimeList) then
> nextTimeEntry = nextTimeEntry + 1
> else
> nextTimeEntry = 0 -- turn it off
> end if
> end if
> end if
> end