Re: [Gnash-dev] Re: gotoAndPlay bug in Gnash

[Martin Guy]

> > >We worked at the definition of an algorithm for resetting the DisplayList
> > >on jump-backs: http://www.gnashdev.org/wiki/index.php/TimelineControl

!

> > >Can you confirm the efectiveness of the the model described under the
> > >DisplayList_reconstruction section ?

I can't understand it, so I don't know. Good article however, I am just lazy.
I would imagine it boils down to recording all object events and
motions in a reversible manner. That, and a little rewinding of any
soundtracks playing.

In the case of an interactive movie, it in interesting to consider
what it means to rewind it or jump forward, since we cannot really
afford to record the entire state of the actionscript machine in a
reversible fashion.
I suggest we take the "forward" and "back" browser button
functionality as a model: rewind the video and sound in time, and on
go-back-forward? what?
Or is rewinding irreversible?

An alternative may be to checkpoint the video objects' state every
second or whatever,

Is that the sort of thing you meant?

  M