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Fix f8b1e30: Fix recent savegames may have incorrect EngineFlags saved. (#13745)

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Detect and update engines saved with invalid EngineFlags.
This commit is contained in:
Peter Nelson
2025-03-05 17:58:03 +00:00
committed by GitHub
parent 0ade7638df
commit 6d631d7a13
1 changed files with 12 additions and 0 deletions
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12
src/saveload/afterload.cpp
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@@ -3344,6 +3344,18 @@ bool AfterLoadGame()
}
}
if (!IsSavegameVersionBefore(SLV_INCREASE_HOUSE_LIMIT) && IsSavegameVersionBeforeOrAt(SLV_SCRIPT_SAVE_INSTANCES)) {
/* Between these two versions (actually from f8b1e303 to 77236258) EngineFlags had an off-by-one. Depending
* on when the save was started, this may or may not affect existing engines. Here we try to detect invalid flags
* and reset them to what they should be. */
for (Engine *e : Engine::Iterate()) {
if (e->flags.Test(EngineFlag::Available)) continue;
if (e->flags.Test(EngineFlag{2}) || (e->flags.Test(EngineFlag::ExclusivePreview) && e->preview_asked.None())) {
e->flags = EngineFlags(e->flags.base() >> 1U);
}
}
}
for (Company *c : Company::Iterate()) {
UpdateCompanyLiveries(c);
}