[Scummvm-tracker] [ScummVM :: Bugs] #12363: MYST3: Manually overwriting Autosave file disables autosaving.

[ScummVM :: Bugs]

#12363: MYST3: Manually overwriting Autosave file disables autosaving.
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Reporter:  macca8         |      Owner:  (none)
    Type:  defect         |     Status:  new
Priority:  high           |  Component:  Engine: Myst3
 Version:                 |   Keywords:
    Game:  Myst 3: Exile  |
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 The Myst3 save system, supported by its own save dialog and dedicated
 prompt-to-save feature, has always allowed the option of manually
 overwriting the Autosave file when prompted by the game, in addition to
 maintaining support for scheduled autosaving.

 However, commit
 [https://github.com/residualvm/residualvm/commit/b333691cc2] - Implement
 the new autosave system - changed the way in which the Autosave file was
 being monitored in Myst3, by adding an isAutosave flag to every save
 file’s metadata. Previously, the file’s identity was established
 exclusively by testing its name.

 The value of this flag is implemented by adding an isAutosave parameter to
 the Myst3Engine’s saveGameState(), which is passed directly to
 GameState::Save() for updating the file’s metadata.

 The issue here is that the Autosave file’s isAutosave flag is changed to
 false when the user initiates a manual overwrite of the file, because all
 manual saves (including to autosave) are passed an isAutosave parameter of
 false.

 For scheduled autosaves, the autosave system determines the status of the
 file occupying the designated autosave slot by checking the value of its
 isAutosave flag, and only falls back to a name test if the flag hasn’t
 been set (refer SaveStateDescriptor::isAutosave() in
 /engines/savestate.cpp).

 This test currently fails if the user has initiated a manual overwrite of
 the Autosave file, because the autosave system incorrectly assumes that
 the autosave slot is occupied by a user created save file, which prevents
 the scheduled autosave from occurring.

 What’s needed is an appropriate name test to be included in
 /engines/myst3/myst3.cpp/Myst3Engine::saveGameState(desc, thumbnail,
 isAutosave) to reset the isAutosave variable to true, before it’s passed
 on to _state->save().

 I’d suggest something similar to the following (it’s only needed if the
 parameter is false), placing it immediately after the removal of any
 suffix from saveName (line 1594)...

 if !isAutosave && saveName.equalsIgnoreCase(_(“Autosave”)) {
         isAutosave = true;
 }


 With regard to the name test comparison, I’m not sure if case is an issue
 or not, because all save names (including AUTOSAVE) appear in uppercase in
 the Myst3 Save dialog, and all save file names (except Autosave.m3s) are
 also in uppercase.

 Current daily build: 2.3.0git14891-gb5804e1257 (Apr 3 2021)
 Platform: macOS (10.6.8 & 10.11.6)
 Game Version: 4-CD English
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Ticket URL: <https://bugs.scummvm.org/ticket/12363>
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