🚀 go-pugleaf

Date Entered: 12-14-92 13:48
BA>        In 256-color mode it doesn't seem like you have any room for
  >page flipping. Are the pictures loaded in a virtual page? Did they use
  >mode-x/y? Or are they just damn fast with their graphics routines?
  >        I assume these animations are stored as seperate pictures.

I don't know about DA, but AA only saves what has changed each frame.  So
If I draw a 320x200 face, I have 64000 bytes for the first frame, and if
the next 10 frames only have mouth movement, then only the mouth movement
is saved (maybe 1000 bytes for each).  AA will REP SCAS the previous
frame to the current frame looking for changes, then it REPNE SCAS
to see how long the change lasts.  Now all it does is save that change.
And continues it's search for changes in the rest of the screen, and then
goes on to the next and repeats.  Run length encoding is performed on the
portion that has changed to surpress repeated bytes and draw them fast.
.----------------------------------------------------.
| Colin Buckley                                      |
| Toronto, Ontario, Canada                           |
| InterNet: colin.buckley@rose.com                   |
|                                                    |
| So Eager to Play, So Relunctant to Admit it...     |
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