[Scummvm-tracker] [ScummVM :: Bugs] #13065: SCUMM: Incorrect screen shaking

[ScummVM :: Bugs]

#13065: SCUMM: Incorrect screen shaking
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Reporter:  eriktorbjorn  |       Owner:  (none)
    Type:  defect        |      Status:  new
Priority:  normal        |   Component:  Engine: SCUMM
 Version:                |  Resolution:
Keywords:                |        Game:
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Comment (by athrxx):

 Also interesting that we multiply the line offsets in shake_positions with
 2. The original has the same offsets, but multiplies them with 80. Reason
 is that the vram is accessed in dwords when writing these offsets into the
 crt control register. So a multiplication with 80 is exactly one line, not
 two. Also, apparently it has been misunderstood that these offsets will
 move the screen up and not down.

 I'll check a bit more whether I understand the timing issue...
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Ticket URL: <https://bugs.scummvm.org/ticket/13065#comment:1>
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