Glenn Maynard
52731adc29
go back to storing BPM as a float, until I'm sure it won't cause precision problems
97 lines
3.7 KiB
C++
97 lines
3.7 KiB
C++
/* TimingData - Holds data for translating beats<->seconds. */
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#ifndef TIMING_DATA_H
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#define TIMING_DATA_H
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#include "NoteTypes.h"
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struct BPMSegment
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{
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BPMSegment() { m_iStartIndex = -1; m_fBPS = -1; }
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BPMSegment( int s, float b ) { m_iStartIndex = s; m_fBPS = b/60.0f; }
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int m_iStartIndex;
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float m_fBPS;
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void SetBPM( float f );
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float GetBPM() const;
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};
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struct StopSegment
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{
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StopSegment() { m_fStopSeconds = -1; m_iStartRow = -1; }
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StopSegment( int s, float f ) { m_iStartRow = s; m_fStopSeconds = f; }
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int m_iStartRow;
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float m_fStopSeconds;
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};
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class TimingData
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{
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public:
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TimingData();
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void GetActualBPM( float &fMinBPMOut, float &fMaxBPMOut ) const;
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float GetBPMAtBeat( float fBeat ) const;
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void SetBPMAtBeat( float fBeat, float fBPM );
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void SetStopAtBeat( float fBeat, float fSeconds );
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void MultiplyBPMInBeatRange( int iStartIndex, int iEndIndex, float fFactor );
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void AddBPMSegment( const BPMSegment &seg );
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void AddStopSegment( const StopSegment &seg );
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BPMSegment& GetBPMSegmentAtBeat( float fBeat );
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void GetBeatAndBPSFromElapsedTime( float fElapsedTime, float &fBeatOut, float &fBPSOut, bool &bFreezeOut ) const;
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float GetBeatFromElapsedTime( float fElapsedTime ) const // shortcut for places that care only about the beat
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{
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float fBeat, fThrowAway;
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bool bThrowAway;
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GetBeatAndBPSFromElapsedTime( fElapsedTime, fBeat, fThrowAway, bThrowAway );
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return fBeat;
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}
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float GetElapsedTimeFromBeat( float fBeat ) const;
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bool HasBpmChangesOrStops() const;
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// used for editor fix - expand/contract needs to move BPMSegments
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// and StopSegments that land during/after the edited range.
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// in addition, we need to be able to shift them otherwise as well
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// (for example, adding/removing rows should move all following
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// segments as necessary)
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// NOTE: How do we want to handle deleting rows that have a BPM change
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// or a stop? I'd like to think we should move them to the first row
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// of the range that was deleted (say if rows 1680-1728 are deleted, and
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// a BPM change or a stop occurs at row 1704, we'll move it to row
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// 1680).
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void ScaleRegion( float fScale = 1, int iStartRow = 0, int iEndRow = MAX_NOTE_ROW );
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void ShiftRows( int iStartRow, int iRowsToShift );
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CString m_sFile; // informational only
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vector<BPMSegment> m_BPMSegments; // this must be sorted before gameplay
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vector<StopSegment> m_StopSegments; // this must be sorted before gameplay
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float m_fBeat0OffsetInSeconds;
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};
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#endif
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/*
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* (c) 2001-2004 Chris Danford, Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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