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track to the beginning of freeze seconds

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higher precision
This commit is contained in:
Glenn Maynard
2003-02-09 03:32:04 +00:00
parent fbf9d0c9c1
commit fb3bb1003a
1 changed files with 12 additions and 2 deletions
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stepmania/src/Song.cpp
+12 -2
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@@ -207,10 +207,20 @@ float Song::GetElapsedTimeFromBeat( float fBeat ) const
float fBeatOut, fBPSOut; float fBeatOut, fBPSOut;
bool bFreezeOut; bool bFreezeOut;
while( fSecondsToMove > 0.1f ) /* 0.001 gives higher precision and *takes about 7 more iterations than
* 0.100. A 90-second song took about 9 iterations; now it takes about
* 16. -glenn */
while( fSecondsToMove > 0.001f )
{ {
GetBeatAndBPSFromElapsedTime( fElapsedTimeBestGuess, fBeatOut, fBPSOut, bFreezeOut ); GetBeatAndBPSFromElapsedTime( fElapsedTimeBestGuess, fBeatOut, fBPSOut, bFreezeOut );
if( fBeatOut > fBeat ) /* If this is an exact match, we're done. However, if we're on a
* freeze segment, keep moving backwards until we're off it, so we
* return the time associated with the beginning of the freeze segment
* and not some random place in its middle. */
if( fBeatOut == fBeat && !bFreezeOut)
break;
if( fBeatOut >= fBeat )
fElapsedTimeBestGuess -= fSecondsToMove; fElapsedTimeBestGuess -= fSecondsToMove;
else else
fElapsedTimeBestGuess += fSecondsToMove; fElapsedTimeBestGuess += fSecondsToMove;