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(mostly) Fix arrow stuttering from repeated positions from audio drivers.

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As far as I could tell, this fixed any issues I was having with PulseAudio,
it should also fix up DSound on Windows although I've yet to test that.
This commit is contained in:
Colby Klein
2012-12-17 16:43:31 -08:00
parent d72bf7ecbb
commit bfba3a6fe8
2 changed files with 21 additions and 1 deletions
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src/GameState.cpp
+17 -1
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@@ -912,6 +912,8 @@ const float GameState::MUSIC_SECONDS_INVALID = -5000.0f;
void GameState::ResetMusicStatistics()
{
m_Position.Reset();
m_LastPositionTimer.Touch();
m_LastPositionSeconds = 0.0f;
Actor::SetBGMTime( 0, 0, 0, 0 );
@@ -960,7 +962,21 @@ void GameState::ResetStageStatistics()
void GameState::UpdateSongPosition( float fPositionSeconds, const TimingData &timing, const RageTimer &timestamp, bool bUpdatePlayers )
{
/* It's not uncommon to get a lot of duplicated positions from the sound
* driver, like so: 13.120953,13.130975,13.130975,13.130975,13.140998,...
* This causes visual stuttering of the arrows. To compensate, keep a
* RageTimer since the last change. */
if (fPositionSeconds == m_LastPositionSeconds)
fPositionSeconds += m_LastPositionTimer.Ago();
else
{
//LOG->Info("Time difference: %+f",
// m_LastPositionTimer.Ago() - (fPositionSeconds - m_LastPositionSeconds)
//);
m_LastPositionTimer.Touch();
m_LastPositionSeconds = fPositionSeconds;
}
m_Position.UpdateSongPosition( fPositionSeconds, timing, timestamp );
if( bUpdatePlayers )