void SongPosition::UpdateSongPosition( float fPositionSeconds, const TimingData &timing, const RageTimer ×tamp )
{
if( !timestamp.IsZero() )
m_LastBeatUpdate = timestamp;
else
m_LastBeatUpdate.Touch();
TimingData::GetBeatArgs beat_info;
beat_info.elapsed_time= fPositionSeconds;
timing.GetBeatAndBPSFromElapsedTime(beat_info);
m_fSongBeat= beat_info.beat;
m_fCurBPS= beat_info.bps_out;
m_bFreeze= beat_info.freeze_out;
m_bDelay= beat_info.delay_out;
m_iWarpBeginRow= beat_info.warp_begin_out;
m_fWarpDestination= beat_info.warp_dest_out;
// "Crash reason : -243478.890625 -48695.773438"
// The question is why is -2000 used as the limit? -aj
ASSERT_M( m_fSongBeat > -2000, ssprintf("Song beat %f at %f seconds is less than -2000!", m_fSongBeat, fPositionSeconds) );
m_fMusicSeconds = fPositionSeconds;
m_fLightSongBeat = timing.GetBeatFromElapsedTime( fPositionSeconds + g_fLightsAheadSeconds );
m_fSongBeatNoOffset = timing.GetBeatFromElapsedTimeNoOffset( fPositionSeconds );
m_fMusicSecondsVisible = fPositionSeconds - g_fVisualDelaySeconds.Get();
beat_info.elapsed_time= m_fMusicSecondsVisible;
timing.GetBeatAndBPSFromElapsedTime(beat_info);
m_fSongBeatVisible= beat_info.beat;
}
void run()
{
#define CHECK(call, exp) \
{ \
float ret = call; \
if( call != exp ) { \
LOG->Warn( "Line %i: Got %f, expected %f", __LINE__, ret, exp); \
return; \
} \
}
TimingData test;
test.AddBPMSegment( BPMSegment(0, 60) );
/* First, trivial sanity checks. */
CHECK( test.GetBeatFromElapsedTime(60), 60.0f );
CHECK( test.GetElapsedTimeFromBeat(60), 60.0f );
/* The first BPM segment extends backwards in time. */
CHECK( test.GetBeatFromElapsedTime(-60), -60.0f );
CHECK( test.GetElapsedTimeFromBeat(-60), -60.0f );
CHECK( test.GetBeatFromElapsedTime(100000), 100000.0f );
CHECK( test.GetElapsedTimeFromBeat(100000), 100000.0f );
CHECK( test.GetBeatFromElapsedTime(-100000), -100000.0f );
CHECK( test.GetElapsedTimeFromBeat(-100000), -100000.0f );
CHECK( test.GetBPMAtBeat(0), 60.0f );
CHECK( test.GetBPMAtBeat(100000), 60.0f );
CHECK( test.GetBPMAtBeat(-100000), 60.0f );
/* 120BPM at beat 10: */
test.AddBPMSegment( BPMSegment(10, 120) );
CHECK( test.GetBPMAtBeat(9.99), 60.0f );
CHECK( test.GetBPMAtBeat(10), 120.0f );
CHECK( test.GetBeatFromElapsedTime(9), 9.0f );
CHECK( test.GetBeatFromElapsedTime(10), 10.0f );
CHECK( test.GetBeatFromElapsedTime(10.5), 11.0f );
CHECK( test.GetElapsedTimeFromBeat(9), 9.0f );
CHECK( test.GetElapsedTimeFromBeat(10), 10.0f );
CHECK( test.GetElapsedTimeFromBeat(11), 10.5f );
/* Add a 5-second stop at beat 10. */
test.AddStopSegment( StopSegment(10, 5) );
/* The stop shouldn't affect GetBPMAtBeat at all. */
CHECK( test.GetBPMAtBeat(9.99), 60.0f );
CHECK( test.GetBPMAtBeat(10), 120.0f );
CHECK( test.GetBeatFromElapsedTime(9), 9.0f );
CHECK( test.GetBeatFromElapsedTime(10), 10.0f );
CHECK( test.GetBeatFromElapsedTime(12), 10.0f );
CHECK( test.GetBeatFromElapsedTime(14), 10.0f );
CHECK( test.GetBeatFromElapsedTime(15), 10.0f );
CHECK( test.GetBeatFromElapsedTime(15.5), 11.0f );
CHECK( test.GetElapsedTimeFromBeat(9), 9.0f );
CHECK( test.GetElapsedTimeFromBeat(10), 10.0f );
CHECK( test.GetElapsedTimeFromBeat(11), 15.5f );
/* Add a 2-second stop at beat 5 and a 5-second stop at beat 15. */
test.m_StopSegments.clear();
test.AddStopSegment( StopSegment(5, 2) );
test.AddStopSegment( StopSegment(15, 5) );
CHECK( test.GetBPMAtBeat(9.99), 60.0f );
CHECK( test.GetBPMAtBeat(10), 120.0f );
CHECK( test.GetBeatFromElapsedTime(1), 1.0f );
CHECK( test.GetBeatFromElapsedTime(2), 2.0f );
CHECK( test.GetBeatFromElapsedTime(5), 5.0f ); // stopped
CHECK( test.GetBeatFromElapsedTime(6), 5.0f ); // stopped
CHECK( test.GetBeatFromElapsedTime(7), 5.0f ); // stop finished
CHECK( test.GetBeatFromElapsedTime(8), 6.0f );
CHECK( test.GetBeatFromElapsedTime(12), 10.0f ); // bpm changes to 120
CHECK( test.GetBeatFromElapsedTime(13), 12.0f );
CHECK( test.GetBeatFromElapsedTime(14), 14.0f );
CHECK( test.GetBeatFromElapsedTime(14.5f), 15.0f ); // stopped
CHECK( test.GetBeatFromElapsedTime(15), 15.0f ); // stopped
CHECK( test.GetBeatFromElapsedTime(17), 15.0f ); // stopped
CHECK( test.GetBeatFromElapsedTime(19.5f), 15.0f ); // stop finished
CHECK( test.GetBeatFromElapsedTime(20), 16.0f );
CHECK( test.GetElapsedTimeFromBeat(1), 1.0f );
CHECK( test.GetElapsedTimeFromBeat(2), 2.0f );
CHECK( test.GetElapsedTimeFromBeat(5), 5.0f ); // stopped
CHECK( test.GetElapsedTimeFromBeat(6), 8.0f );
CHECK( test.GetElapsedTimeFromBeat(10), 12.0f ); // bpm changes to 120
CHECK( test.GetElapsedTimeFromBeat(12), 13.0f );
CHECK( test.GetElapsedTimeFromBeat(14), 14.0f );
CHECK( test.GetElapsedTimeFromBeat(15.0f), 14.5f ); // stopped
CHECK( test.GetElapsedTimeFromBeat(16), 20.0f );
RageTimer foobar;
/* We can look up the time of any given beat, then look up the beat of that
* time and get the original value. (We can't do this in reverse; the beat
* doesn't move during stop segments.) */
int q = 0;
for( float f = -10; f < 250; f += 0.002 )
{
++q;
// const float t = test.GetElapsedTimeFromBeat( f );
const float b = test.GetBeatFromElapsedTime( f );
/* b == f */
// if( fabsf(b-f) > 0.001 )
// {
// LOG->Warn( "%f != %f", b, f );
// return;
// }
}
LOG->Trace("... %i in %f", q, foobar.GetDeltaTime());
TimingData test2;
test2.AddBPMSegment( BPMSegment(0, 60) );
test2.AddStopSegment( StopSegment(0, 1) );
CHECK( test2.GetBeatFromElapsedTime(-1), -1.0f );
CHECK( test2.GetBeatFromElapsedTime(0), 0.0f );
CHECK( test2.GetBeatFromElapsedTime(1), 0.0f );
CHECK( test2.GetBeatFromElapsedTime(2), 1.0f );
CHECK( test2.GetElapsedTimeFromBeat(-1), -1.0f );
CHECK( test2.GetElapsedTimeFromBeat(0), 0.0f );
CHECK( test2.GetElapsedTimeFromBeat(1), 2.0f );
CHECK( test2.GetElapsedTimeFromBeat(2), 3.0f );
}