[Scummvm-tracker] [ScummVM :: Bugs] #12065: PETKA: glitching animations (original game bug)

[ScummVM :: Bugs]

#12065: PETKA: glitching animations (original game bug)
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Reporter:  Tkachov  |      Owner:  (none)
    Type:  defect   |     Status:  new
Priority:  low      |  Component:  Engine: Petka
 Version:           |   Keywords:  glitch, animations
    Game:  Petka 1  |
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 This is a bug from original game, but it can be observed in ScummVM too.

 Video demonstration: https://youtu.be/JXAlL_QkzJQ

 A zoomed in image:
 [[Image(https://media.discordapp.net/attachments/581224061091446795/800325503319408650/unknown.png,
 480px)]]

 My guess is that this is related to dirty rects. The bug doesn't happen in
 a lot of places, but is pretty consistent (if it happens — it happens).
 Maybe that's because two animations overlay each other?

 Attachments:
 ||= attachment:petka1.s04 =|| ScummVM save file on the shown screen ||
 ||= attachment:save13.dat =|| Original game save file ||

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 ScummVM 2.3.0git11899-g3fb4d67b4e (Jan 16 2021 05:21:57)
 Windows 10 version 20H2 64-bit
 Petka 1.0.0.1 aka Red Comrades 1

 To reproduce:
 - load the save file;
 - wait a couple of seconds;
 - ''<you could see the second head above the girl at the bar>''.
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Ticket URL: <https://bugs.scummvm.org/ticket/12065>
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