At 11:28 -0500 03/31/2002, Colin Holgate wrote:
[another]
>>I can visualise the 'on prepareFrame' handler listed in the
>>'Outdated Lingo' section of the next release of Director.
>>Either that, or the 'Utterly Pointless, Just There To Annoy You
>>Lingo' section.
>
>You're wrong about this. Prepareframe was one of the most useful
>improvements in Director 6.
No kidding. It's a terrific way to set the stage (as it were) before
anything draws at all. And it's a great place to do housekeeping that
causes other sprites to change their positions before the frame is
drawn -- as with shooting games, for instance. If you have a "bullet"
you can do something like this:
on prepareFrame me
sprite(me.spriteNum).loc = sprite(me.spriteNum).loc + 2
END prepareFrame
...and do this with the target:
on enterFrame me
if intersect ( sprite(me.spriteNum).rect, sprite(bullet).rect )...
... bla bla bla
END enterFrame
I believe the utility speaks for itself. You get *three* possible
chances to update the frame status of a sprite on *every* screen
refresh (prepareFrame, enterFrame, exitFrame) instead of just one or
two.
--
Warren Ockrassa | http://www.nightwares.com/
Director help | Free files | Sample chapters | Freelance | Consulting
Author | Director 8.5 Shockwave Studio: A Beginner's Guide
Published by Osborne/McGraw-Hill
http://www.osborne.com/indexes/beginners_guides.shtml
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