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reduce ROWS_PER_BEAT; we're not actually using it for BPM values right now, and it's causing some problems with BeatToNoteRow on large values

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Glenn Maynard
2005-01-28 04:58:27 +00:00
parent 2f747b53c2
commit b61a030ce0
1 changed files with 13 additions and 4 deletions
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stepmania/src/NoteTypes.h
+13 -4
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@@ -139,10 +139,8 @@ extern TapNote TAP_ADDITION_MINE;
const int MAX_NOTE_TRACKS = 16;
/* This is a divisor for our "fixed-point" time/beat representation. It must be evenly divisible
* by 2, 3, and 4, to exactly represent 8th, 12th and 16th notes. It must be divisible by 1000, to
* exactly represent 0.001. It must leave enough precision before the decimal place to store
* numbers into the tens of thousands, so we don't have any attainable maximum tap note row. */
const int ROWS_PER_BEAT = 48*1000;
* by 2, 3, and 4, to exactly represent 8th, 12th and 16th notes. */
const int ROWS_PER_BEAT = 48;
const int BEATS_PER_MEASURE = 4;
const int ROWS_PER_MEASURE = ROWS_PER_BEAT * BEATS_PER_MEASURE;
@@ -176,6 +174,17 @@ NoteType BeatToNoteType( float fBeat );
bool IsNoteOfType( int row, NoteType t );
CString NoteTypeToString( NoteType nt );
/* This is more accurate: by computing the integer and fractional parts separately, we
* can avoid storing very large numbers in a float and possibly losing precision. It's
* slower; use this once less stuff uses BeatToNoteRow. */
/*
inline int BeatToNoteRow( float fBeatNum )
{
float fraction = fBeatNum - truncf(fBeatNum);
int integer = int(fBeatNum) * ROWS_PER_BEAT;
return integer + lrintf(fraction * ROWS_PER_BEAT);
}
*/
inline int BeatToNoteRow( float fBeatNum ) { return lrintf( fBeatNum * ROWS_PER_BEAT ); } // round
inline int BeatToNoteRowNotRounded( float fBeatNum ) { return (int)( fBeatNum * ROWS_PER_BEAT ); }
inline float NoteRowToBeat( int iRow ) { return iRow / (float)ROWS_PER_BEAT; }