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If a song has any time signatures defined, but doesn't include for for beat 0, add one.

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(Fixes a crash that can occur with some songs if functions like TimingData::NoteRowToMeasureAndBeat are called for rows that don't have a time signature defined)
This commit is contained in:
Michael Votaw
2023-12-19 16:20:51 -06:00
committed by teejusb
parent 5aed630a41
commit eeb2528612
1 changed files with 15 additions and 1 deletions
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src/NotesLoaderSM.cpp
+15 -1
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@@ -772,6 +772,7 @@ void SMLoader::ProcessDelays( TimingData &out, const RString line, const int row
void SMLoader::ProcessTimeSignatures( TimingData &out, const RString line, const int rowsPerBeat )
{
std::vector<RString> vs1;
std::vector<TimeSignatureSegment> segments;
split( line, ",", vs1 );
for (RString const &s1 : vs1)
@@ -818,8 +819,21 @@ void SMLoader::ProcessTimeSignatures( TimingData &out, const RString line, const
fBeat, iDenominator );
continue;
}
segments.push_back( TimeSignatureSegment(BeatToNoteRow(fBeat), iNumerator, iDenominator) );
}
// If there are any time signatures defined, but there isn't one
// for the very first beat of the song, then add one.
// Without it, calls to functions like TimingData::NoteRowToMeasureAndBeat
// can fail for charts that are otherwise valid.
if ( segments.size() > 0 && segments[0].GetRow() > 0 )
{
out.AddSegment( TimeSignatureSegment(0, 4, 4) );
}
out.AddSegment( TimeSignatureSegment(BeatToNoteRow(fBeat), iNumerator, iDenominator) );
for( TimeSignatureSegment segment: segments )
{
out.AddSegment( segment );
}
}