At 10:04 AM -0500 1/15/01, Roy Pardi wrote:
>Does anyone understand the different results returned by "number of
>member" as shown below?
>
>put the number of member "SliderParent" --in castLib 5
>-- 327750
>
>put the number of member "DriveManagerParent" in castLib 1
>-- 2
>
>There are not 327, 750 cast members in this movie-
>--
>
Because "the number of member" always returns a unique identifier
that represents both the castlib the member is in, and the membernum
within the castlib.
Each castlib can contain 65536 member. For backwards compatibility
reasons with D4 (remember "Shared.cst"), the first castlib (internal)
is considered castlib #0, while the second castlib is considered
castlib #2.
Here's an algorithm that explains it (my guess):
on CalculateNumberOfMember memberNum, castlibNum
if castlibNum = 1 then
multiplier = 0
else
multiplier = castlibNum
end
numberOfMember = (multiplier * 65536) + memberNum
return numberOfMember
end
I use "the number of member" very often when I want to find the
number of successive members in a castlib. For example, let's say
that I impose an order where I always have an up button, followed by
a down button, followed by a gray button. Then to set this up in a
behavior, I would do something like this:
property pnmUp -- property which is the number of member of the up button
property pnmDown
property pnmRoll
property spriteNum
on beginSprite me
pnmUp = the number of the member of sprite spriteNum
pnmDown = pnmUp + 1
pnmRoll = pnmUp + 2
end
Then I can ups pnmUp, pnmDown, and pnmRoll easily and be sure that
they are refer to the proper cast members.
Irv
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