On 9/28/10 2:25 PM, Glen Pike wrote:
Keith Peter's "Making Things Move" book is really good. Jobe Makar's
Flash MX Game Programming Demystified explained the basic concepts
nicely too.
I'm reading Keith Peter's book now. So far, very relevant - thanks!
There are lots of tutorials online, so I would Google "as3 physics
collisions" or similar. For other optimisations - it's possibly not
worth updating stuff that's not on stage until you put it back - is
that possible?
What I was talking about wasn't necessarily adding and removing things
from the stage, but adding and removing them from the GPU. You can add
stuff to the stage without too many hiccups (in software) - but if you
set the cacheAsBitmap and cacheAsBitmapMatrix properties (or update or
remove something with those set), you cause the player to generate and
upload (or destroy) a texture to the GPU - this has a noticeable impact
on performance (at least as far as I can tell so far - the biggest
impact out of most things).
That's why I was saying I'd like to control that part of it myself - I
don't know if the available physics libraries have been re-crafted for
mobile/GPU yet.
Kevin N.
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