Move lyric display into an actor

Use Commands for tween in/out; queue a whole lyric line at
once (simpler)

stepmania/src/LyricDisplay.cpp

@@ -0,0 +1,83 @@
+#include "global.h"
+#include "LyricDisplay.h"
+
+#include "GameState.h"
+#include "ThemeManager.h"
+
+#define IN_COMMAND		THEME->GetMetric("LyricDisplay","InCommand")
+#define OUT_COMMAND		THEME->GetMetric("LyricDisplay","OutCommand")
+
+float g_TweenInTime, g_TweenOutTime;
+
+LyricDisplay::LyricDisplay()
+{
+	// We need to use the Color Tag that's in m_pCurSong->m_LyricSegments[?].m_sColor
+	// But since the value there is in Hex, need to convert to RageColor I guess.
+	// Until that gets done, this will default to white (&HFFFFFF)
+
+	m_textLyrics.LoadFromFont( THEME->GetPathTo("Fonts","normal") );
+	m_textLyrics.SetDiffuse( RageColor(1,1,1,1) );
+	this->AddChild(&m_textLyrics);
+
+	Init();
+}
+
+void LyricDisplay::Init()
+{
+	m_textLyrics.SetText("");
+	m_iCurLyricNumber = 0;
+
+	/* Update global cache: */
+	g_TweenInTime = Actor::GetCommandLength(IN_COMMAND);
+	g_TweenOutTime = Actor::GetCommandLength(OUT_COMMAND);
+}
+
+void LyricDisplay::Update( float fDeltaTime )
+{
+	ActorFrame::Update( fDeltaTime );
+
+	// Make sure we don't go over the array's boundry
+	if( m_iCurLyricNumber >= GAMESTATE->m_pCurSong->m_LyricSegments.size() )
+		return;
+
+	Song *song = GAMESTATE->m_pCurSong;
+	const float fStartTime = (song->m_LyricSegments[m_iCurLyricNumber].m_fStartTime) - g_TweenInTime;
+
+	if(GAMESTATE->m_fMusicSeconds < fStartTime)
+		return;
+
+	const float MaxDisplayTime = 10;
+
+	float fShowLength = MaxDisplayTime;
+
+	if(m_iCurLyricNumber+1 < GAMESTATE->m_pCurSong->m_LyricSegments.size())
+	{
+		/* Clamp this lyric to the beginning of the next. */
+		const float Distance = 
+			song->m_LyricSegments[m_iCurLyricNumber+1].m_fStartTime -
+			song->m_LyricSegments[m_iCurLyricNumber].m_fStartTime;
+		const float TweenBufferTime = g_TweenInTime + g_TweenOutTime;
+
+		fShowLength = min(fShowLength, Distance - TweenBufferTime);
+	}
+
+	m_textLyrics.SetText( GAMESTATE->m_pCurSong->m_LyricSegments[m_iCurLyricNumber].m_sLyric );
+	// m_textLyrics.SetDiffuse(COLOR);
+
+	m_textLyrics.StopTweening();
+	m_textLyrics.Command(IN_COMMAND);
+	m_textLyrics.BeginTweening( fShowLength ); /* sleep */
+	m_textLyrics.Command(OUT_COMMAND);
+
+	m_iCurLyricNumber++;
+
+		/*I figure for longer lines of text, the Lyric display object should
+			be scaled down, if needed, by the .ScaleTo() function. But somehow
+			it jus ain't working for me at all.. anyone able to do this
+			properly?? We prolly should also add detection of where to put
+			the Lyric object, if the arrows are on reverse? Jus an idea, 
+			but it kinda defeats the purpose of the Lyric object X/Y being a
+			theme element :)
+	*/
+}
+

stepmania/src/LyricDisplay.h

@@ -0,0 +1,21 @@
+#ifndef LYRIC_DISPLAY_H
+#define LYRIC_DISPLAY_H
+
+#include "ActorFrame.h"
+#include "Song.h"
+#include "BitmapText.h"
+
+class LyricDisplay: public ActorFrame {
+public:
+	LyricDisplay();
+	void Update(float fDeltaTime);
+	
+	/* Call when song changes: */
+	void Init();
+
+private:
+	BitmapText m_textLyrics;
+	unsigned m_iCurLyricNumber;
+};
+
+#endif