Take care of one of AJ's TODOs.

Docs/Changelog_sm-ssc.txt

@@ -22,6 +22,7 @@ sm-ssc v1.2.1 | 2011011?
   default is 50, as it was before. [Wolfman2000]
 * [Player] Allow the default attack times for both random and mine attacks
   to be changed. [Wolfman2000]
+* [NoteField] Allow for adjustable fade fail time (for AJ). [Wolfman2000]
 
 20110112
 --------

Themes/_fallback/metrics.ini

@@ -873,6 +873,7 @@ ShowBoard=false
 ShowBeatBars=false
 #
 FadeBeforeTargetsPercent=0
+FadeFailTime=1.5
 #
 BarMeasureAlpha=1
 Bar4thAlpha=1

src/NoteField.cpp

@@ -27,6 +27,7 @@ static ThemeMetric<float> BAR_MEASURE_ALPHA( "NoteField", "BarMeasureAlpha" );
 static ThemeMetric<float> BAR_4TH_ALPHA( "NoteField", "Bar4thAlpha" );
 static ThemeMetric<float> BAR_8TH_ALPHA( "NoteField", "Bar8thAlpha" );
 static ThemeMetric<float> BAR_16TH_ALPHA( "NoteField", "Bar16thAlpha" );
+static ThemeMetric<float> FADE_FAIL_TIME( "NoteField", "FadeFailTime" );
 
 static RString RoutineNoteSkinName( size_t i ) { return ssprintf("RoutineNoteSkinP%i",int(i+1)); }
 static ThemeMetric1D<RString> ROUTINE_NOTESKIN( "NoteField", RoutineNoteSkinName, NUM_PLAYERS );
@@ -264,9 +265,8 @@ void NoteField::Update( float fDeltaTime )
 	cur->m_ReceptorArrowRow.Update( fDeltaTime );
 	cur->m_GhostArrowRow.Update( fDeltaTime );
 
-	// TODO: make fade time of 1.5 seconds metricable instead? -aj
 	if( m_fPercentFadeToFail >= 0 )
-		m_fPercentFadeToFail = min( m_fPercentFadeToFail + fDeltaTime/1.5f, 1 );	// take 1.5 seconds to totally fade
+		m_fPercentFadeToFail = min( m_fPercentFadeToFail + fDeltaTime/FADE_FAIL_TIME, 1 );
 
 	// Update fade to failed
 	m_pCurDisplay->m_ReceptorArrowRow.SetFadeToFailPercent( m_fPercentFadeToFail );