At 9:08 AM -0400 10/18/01, Genevieve Young wrote:
>May I ask:
>
>a. how long  a sprite is in the score is  dependant  on the application.
>For educational applications,  usually how many frames are used:
>5? 10? When does one use the default 28?

I don't know if there is a "usual" length.
I have left my default at 28, but that's my choice.

>b. Is there a limit to the length of the score used?
>i.e. does one design into 1000's of frames? Or would the designer 
>bring into play things like MIAWs?
>
>Thanks,
>Genevieve

Scores can be virtually unlimited in size, but there is 2 issues to 
be aware of when considering whether or not to not make them large 
(in the thousands).

1. Wide score sprites (wider than 1000 frames or so) can be difficult 
to reposition in the score.  One workaround is to shrink them (using 
the sprite tab of the PI), then move them, then grow them again.  As 
this is an authoring-only performance problem that doesn't comes up 
too often, considering fixing it has been on the back burner for a 
while.

2. The appearance of the first frame of a Shockwave movie can be 
appreciably slowed down by large scores (thousands of frames and 
sprites).
   Since all score data must fully downloaded before a movie can start 
to run, if there are thousands of frames and/or hundreds of sprites 
per frame, this can cause a significant delay at the beginning of a 
Shockwave movie (there are Tech Notes at MACR about available 
workarounds).
   Note: all scripts and fonts must be fully downloaded prior to 
startup too, so many of these can also contribute to slower Shockwave 
startup.
Projectors are not effected by these particular startup issues.

hth

-Buzz

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