This workaround solves audio/video sync issues that used to appear frequently in many animations, e.g. when Adibou kicks the ball in the garden.
Those animations easily get out of sync when the timing is done by hotspots::evaluate, which sometimes does not call animate() as often as needed for good sync (mouse events processing, in particular, can delay the call).
The original game seems to use also some kind of frame skipping to address this problem.
In SSCI, VMD is drawn by a standard CelObjMem wrapped by a
ScreenItem, giving the location of the bitmap memory to the
decoder. The decoder already supports this, but the API was
previously hidden behind the AdvancedVMDDecoder wrapper
(which is more convenient to use than the VMDDecoder class).
After discussing with DrMcCoy, we felt this the best way to proceed. A wrapper class that implements AdvancedVideoDecoder is still around for use in SCI.
This is a workaround for how Lost in Time behaves in combination
with changes I made to the DataIO code for running Urban Runner
on low-memory devices.
Urban Runner's intro are far to big to have them copied into
memory for these devices, so I made the DataIO code return a
SafeSeekableSubReadStream into the opened archive stream instead.
Unfortunately, Lost in Time might not close a video file when it
closes the data file which it was originally in, especially when
loading a saved game. Since the video player needs to be able to
gaplessly continue a video and there does not, by itself, close
the video if not requested by the scripts, this leads to reading
out of an already closed stream in certain cases.
So, to worka round this issues, the video player tries to reopen
each currently opened video after a data archive was closed, to
make sure that that video is still available. If not, the video
is closed.
Simon Delamarre
Eugene Sandulenko
Colin Snover
Bastien Bouclet
Matthew Hoops
Johannes Schickel
Sven Hesse
strangerke
Ori Avtalion
Max Horn