itgmania212121/stepmania/src/MusicWheel.cpp

#include "stdafx.h"
/*
-----------------------------------------------------------------------------
 Class: MusicWheel

 Desc: See header.

 Copyright (c) 2001-2002 by the person(s) listed below.  All rights reserved.
	Chris Danford
-----------------------------------------------------------------------------
*/

#include "MusicWheel.h"
#include "RageUtil.h"
#include "SongManager.h"
#include "GameManager.h"
#include "ThemeManager.h"
#include "RageMusic.h"
#include "ScreenManager.h"	// for sending SM_PlayMusicSample
#include "RageLog.h"
#include "GameConstantsAndTypes.h"



const float SWITCH_MUSIC_TIME	=	0.3f;

const float SORT_ICON_ON_SCREEN_X	=	-140;
const float SORT_ICON_ON_SCREEN_Y	=	-180;

const float SORT_ICON_OFF_SCREEN_X	=	SORT_ICON_ON_SCREEN_X;
const float SORT_ICON_OFF_SCREEN_Y	=	SORT_ICON_ON_SCREEN_Y - 64;


const float SCORE_X				=	58;
const float SCORE_Y[NUM_PLAYERS] = { -40, 40 };

const float SCROLLBAR_X			=	150;

D3DXCOLOR COLOR_SECTION_TEXT = D3DXCOLOR(1,1,0.3f,1);


D3DXCOLOR SECTION_COLORS[] = { 
	D3DXCOLOR( 0.9f, 0.0f, 0.2f, 1 ),	// red
	D3DXCOLOR( 0.6f, 0.0f, 0.4f, 1 ),	// pink
	D3DXCOLOR( 0.2f, 0.1f, 0.3f, 1 ),	// purple
	D3DXCOLOR( 0.0f, 0.4f, 0.8f, 1 ),	// sky blue
	D3DXCOLOR( 0.0f, 0.6f, 0.6f, 1 ),	// sea green
	D3DXCOLOR( 0.0f, 0.6f, 0.2f, 1 ),	// green
	D3DXCOLOR( 0.8f, 0.6f, 0.0f, 1 ),	// orange
};
const int NUM_SECTION_COLORS = sizeof(SECTION_COLORS)/sizeof(D3DXCOLOR);

inline D3DXCOLOR GetNextSectionColor()
{
	static int i=0;
	i = i % NUM_SECTION_COLORS;
	return SECTION_COLORS[i++];
}



WheelItemData::WheelItemData()
{
	m_pSong = NULL;
	m_MusicStatusDisplayType = TYPE_NONE;
}

void WheelItemData::Load( WheelItemType wit, Song* pSong, const CString &sSectionName, const D3DXCOLOR color )
{
	m_WheelItemType = wit;
	m_pSong = pSong;
	m_sSectionName = sSectionName;
	m_color = color;
}

WheelItemDisplay::WheelItemDisplay()
{
	m_MusicStatusDisplay.SetXY( -136, 0 );
	
	m_TextBanner.SetHorizAlign( align_left );
	m_TextBanner.SetXY( -30, 0 );

	m_sprSongBar.Load( THEME->GetPathTo(GRAPHIC_SELECT_MUSIC_SONG_BAR) );
	m_sprSongBar.SetXY( 0, 0 );

	m_sprSectionBar.Load( THEME->GetPathTo(GRAPHIC_SELECT_MUSIC_SECTION_BAR) );
	m_sprSectionBar.SetXY( 0, 0 );

	m_textSectionName.Load( THEME->GetPathTo(FONT_HEADER1) );
	m_textSectionName.TurnShadowOff();
	m_textSectionName.SetHorizAlign( align_left );
	m_textSectionName.SetVertAlign( align_middle );
	m_textSectionName.SetXY( m_sprSectionBar.GetX() - m_sprSectionBar.GetUnzoomedWidth()/2 + 30, 0 );
	m_textSectionName.SetZoom( 1.0f );



	m_textRoulette.Load( THEME->GetPathTo(FONT_TEXT_BANNER) );
	m_textRoulette.TurnShadowOff();
	m_textRoulette.SetText( "ROULETTE" );
	m_textRoulette.TurnRainbowOn();
	m_textRoulette.SetZoom( 1.3f );
	m_textRoulette.SetHorizAlign( align_left );
	m_textRoulette.SetXY( -120, 0 );

	for( int p=0; p<NUM_PLAYERS; p++ )
	{
		m_GradeDisplay[p].Load( THEME->GetPathTo(GRAPHIC_SELECT_MUSIC_SMALL_GRADES) );
		m_GradeDisplay[p].SetZoom( 1.0f );
		m_GradeDisplay[p].SetXY( 90.0f + p*30.0f, 0 );
	}
}


void WheelItemDisplay::LoadFromWheelItemData( WheelItemData* pWID )
{
	ASSERT( pWID != NULL );
	
	
	// copy all data items
	m_WheelItemType = pWID->m_WheelItemType;
	m_sSectionName	= pWID->m_sSectionName;
	m_pSong			= pWID->m_pSong;
	m_color			= pWID->m_color;
	m_MusicStatusDisplayType = pWID->m_MusicStatusDisplayType;


	// init type specific stuff
	switch( pWID->m_WheelItemType )
	{

	case TYPE_SECTION:
		{
		CString sDisplayName = SONGMAN->ShortenGroupName(m_sSectionName);
		m_textSectionName.SetZoom( 1 );
		m_textSectionName.SetText( sDisplayName );
		m_textSectionName.SetDiffuseColor( m_color );
		m_textSectionName.TurnRainbowOff();

		float fSourcePixelWidth = (float)m_textSectionName.GetWidestLineWidthInSourcePixels();
		float fMaxTextWidth = 200;
		if( fSourcePixelWidth > fMaxTextWidth  )
			m_textSectionName.SetZoomX( fMaxTextWidth / fSourcePixelWidth );
		}
		break;
	case TYPE_SONG:
		{
		m_TextBanner.LoadFromSong( m_pSong );
		D3DXCOLOR color = m_color;
		color.r += 0.15f;
		color.g += 0.15f;
		color.b += 0.15f;
		m_TextBanner.SetDiffuseColor( color );
		m_MusicStatusDisplay.SetType( m_MusicStatusDisplayType );
		RefreshGrades();
		}
		break;
	case TYPE_ROULETTE:
		{
		}
		break;
	default:
		ASSERT( false );	// invalid type
	}
}

void WheelItemDisplay::RefreshGrades()
{
	for( int p=0; p<NUM_PLAYERS; p++ )
	{
		if( !GAMEMAN->IsPlayerEnabled( (PlayerNumber)p ) )
		{
			m_GradeDisplay[p].SetDiffuseColor( D3DXCOLOR(1,1,1,0) );
			continue;
		}

		const DifficultyClass dc = PREFSMAN->m_PreferredDifficultyClass[p];
		if( m_pSong )	// this is a song display
		{
			const Grade grade = m_pSong->GetGradeForDifficultyClass( GAMEMAN->GetCurrentStyleDef()->m_NotesType, dc );
			m_GradeDisplay[p].SetGrade( grade );
			m_GradeDisplay[p].SetDiffuseColor( PlayerToColor((PlayerNumber)p) );
		}
		else	// this is a section display
		{
			m_GradeDisplay[p].SetGrade( GRADE_NO_DATA );
		}
	}
}

void WheelItemDisplay::Update( float fDeltaTime )
{
	switch( m_WheelItemType )
	{
	case TYPE_SECTION:
		m_sprSectionBar.Update( fDeltaTime );
		m_textSectionName.Update( fDeltaTime );
		break;
	case TYPE_ROULETTE:
		m_sprSectionBar.Update( fDeltaTime );
		m_textRoulette.Update( fDeltaTime );
		break;
	case TYPE_SONG:
		m_sprSongBar.Update( fDeltaTime );
		m_MusicStatusDisplay.Update( fDeltaTime );
		m_TextBanner.Update( fDeltaTime );
		for( int p=0; p<NUM_PLAYERS; p++ )
			m_GradeDisplay[p].Update( fDeltaTime );
		break;
	}
}

void WheelItemDisplay::DrawPrimitives()
{
	switch( m_WheelItemType )
	{
	case TYPE_SECTION:
		m_sprSectionBar.Draw();
		m_textSectionName.Draw();
		break;
	case TYPE_ROULETTE:
		m_sprSectionBar.Draw();
		m_textRoulette.Draw();
		break;
	case TYPE_SONG:
		m_sprSongBar.Draw();
		m_MusicStatusDisplay.Draw();
		m_TextBanner.Draw();
		for( int p=0; p<NUM_PLAYERS; p++ )
			m_GradeDisplay[p].Draw();
		break;
	}
}



MusicWheel::MusicWheel() 
{ 
	LOG->WriteLine( "MusicWheel::MusicWheel()" );

	for( int p=0; p<NUM_PLAYERS; p++ )
	{
		m_sprHighScoreFrame[p].Load( THEME->GetPathTo(GRAPHIC_SELECT_MUSIC_SCORE_FRAME) );
		m_sprHighScoreFrame[p].SetXY( SCORE_X, SCORE_Y[p] );
		this->AddActor( &m_sprHighScoreFrame[p] );

		m_HighScore[p].SetXY( SCORE_X, SCORE_Y[p]*0.97f );
		m_HighScore[p].SetZoom( 0.6f );
		this->AddActor( &m_HighScore[p] );
	}
	
	m_sprHighScoreFrame[1].SetZoomY( -1 );	// flip vertically


	m_sprSelectionOverlay.Load( THEME->GetPathTo(GRAPHIC_SELECT_MUSIC_SONG_HIGHLIGHT) );
	m_sprSelectionOverlay.SetXY( 0, 0 );
	m_sprSelectionOverlay.SetDiffuseColor( D3DXCOLOR(1,1,1,1) );
	m_sprSelectionOverlay.SetEffectGlowing( 1.0f, D3DXCOLOR(1,1,1,0.4f), D3DXCOLOR(1,1,1,1) );
	this->AddActor( &m_sprSelectionOverlay );

	m_MusicSortDisplay.SetXY( SORT_ICON_ON_SCREEN_X, SORT_ICON_ON_SCREEN_Y );
	m_MusicSortDisplay.SetEffectGlowing( 1.0f );
	this->AddActor( &m_MusicSortDisplay );

	m_ScrollBar.SetX( SCROLLBAR_X ); 
	this->AddActor( &m_ScrollBar );
	

	m_soundChangeMusic.Load( THEME->GetPathTo(SOUND_SWITCH_MUSIC), 10 );
	m_soundChangeSort.Load( THEME->GetPathTo(SOUND_SWITCH_SORT) );
	m_soundExpand.Load( THEME->GetPathTo(SOUND_EXPAND) );


	// init m_mapGroupNameToBannerColor

	CArray<Song*, Song*> arraySongs;
	arraySongs.Copy( SONGMAN->m_pSongs );
	SortSongPointerArrayByGroup( arraySongs );
	


	m_SortOrder = PREFSMAN->m_SongSortOrder;
	m_MusicSortDisplay.Set( m_SortOrder );
	m_MusicSortDisplay.SetXY( SORT_ICON_ON_SCREEN_X, SORT_ICON_ON_SCREEN_Y );


	m_sExpandedSectionName = "";

	m_iSelection = 0;

	
	m_WheelState = STATE_IDLE;
	m_fTimeLeftInState = FADE_TIME;
	m_fPositionOffsetFromSelection = 0;


	// build all of the wheel item datas
	for( int so=0; so<NUM_SORT_ORDERS; so++ )
		BuildWheelItemDatas( m_WheelItemDatas[so], SongSortOrder(so) );

	// select a song if none are selected
	if( SONGMAN->m_pCurSong == NULL && 	// if there is no currently selected song
		SONGMAN->m_pSongs.GetSize() > 0 )		// and there is at least one song
	{
		CArray<Song*, Song*> arraySongs;
		SONGMAN->GetSongsInGroup( SONGMAN->m_sPreferredGroup, arraySongs );
	
		if( arraySongs.GetSize() > 0 )
			SONGMAN->m_pCurSong = arraySongs[0];	// select the first song
	}


	if( SONGMAN->m_pCurSong != NULL )
	{
		// find the previously selected song (if any)
		for( int i=0; i<GetCurWheelItemDatas().GetSize(); i++ )
		{
			if( GetCurWheelItemDatas()[i].m_pSong == SONGMAN->m_pCurSong )
			{
				m_iSelection = i;		// select it
				m_sExpandedSectionName = GetCurWheelItemDatas()[m_iSelection].m_sSectionName;	// make its group the currently expanded group
				break;
			}
		}
	}

	// rebuild the WheelItems that appear on screen
	RebuildWheelItemDisplays();

}

MusicWheel::~MusicWheel()
{
	PREFSMAN->m_SongSortOrder = m_SortOrder;
}

void MusicWheel::BuildWheelItemDatas( CArray<WheelItemData, WheelItemData&> &arrayWheelItemDatas, SongSortOrder so )
{
	int i;

	///////////////////////////////////
	// Make an array of Song*, then sort them
	///////////////////////////////////
	CArray<Song*, Song*> arraySongs;
	
	// copy only song that have at least one Notes for the current GameMode
	for( i=0; i<SONGMAN->m_pSongs.GetSize(); i++ )
	{
		Song* pSong = SONGMAN->m_pSongs[i];

		CArray<Notes*, Notes*> arraySteps;
		pSong->GetNotesThatMatch( GAMEMAN->GetCurrentStyleDef()->m_NotesType, arraySteps );

		if( arraySteps.GetSize() > 0 )
			arraySongs.Add( pSong );
	}


	// sort the SONGMAN
	switch( so )
	{
	case SORT_GROUP:
		SortSongPointerArrayByGroup( arraySongs );
		break;
	case SORT_TITLE:
		SortSongPointerArrayByTitle( arraySongs );
		break;
	case SORT_BPM:
		SortSongPointerArrayByBPM( arraySongs );
		break;
//	case SORT_ARTIST:
//		SortSongPointerArrayByArtist( arraySongs );
//		break;
	case SORT_MOST_PLAYED:
		SortSongPointerArrayByMostPlayed( arraySongs );
		break;
	default:
		ASSERT( false );	// unhandled SORT_ORDER
	}



	///////////////////////////////////
	// Build an array of WheelItemDatas from the sorted list of Song*
	///////////////////////////////////
	arrayWheelItemDatas.RemoveAll();	// clear out the previous wheel items...

	// ...and load new ones

	bool bUseSections;
	switch( so )
	{
	case SORT_MOST_PLAYED:	bUseSections = false;	break;
	case SORT_BPM:			bUseSections = false;	break;
	case SORT_GROUP:		bUseSections = SONGMAN->m_sPreferredGroup != "ALL MUSIC";	break;
	case SORT_TITLE:		bUseSections = true;	break;
	default:		ASSERT( false );
	}

	if( bUseSections )
	{
		// make WheelItemDatas with sections
		arrayWheelItemDatas.SetSize( arraySongs.GetSize()*2 );	// make sure we have enough room for all music and section items

		CString sLastSection = "";
		D3DXCOLOR colorSection;
		int iCurWheelItem = 0;
		for( int i=0; i< arraySongs.GetSize(); i++ )
		{
			Song* pSong = arraySongs[i];
			CString sThisSection = GetSectionNameFromSongAndSort( pSong, so );
			int iSectionColorIndex = 0;
			if( sThisSection != sLastSection )	// new section, make a section item
			{
				WheelItemData &WID = arrayWheelItemDatas[iCurWheelItem++];
				colorSection = (so==SORT_TITLE) ? SONGMAN->GetGroupColor(pSong->GetGroupName()) : SECTION_COLORS[iSectionColorIndex];
				iSectionColorIndex = (iSectionColorIndex+1) % NUM_SECTION_COLORS;
				WID.Load( TYPE_SECTION, NULL, sThisSection, colorSection );
				sLastSection = sThisSection;
			}

			WheelItemData &WID = arrayWheelItemDatas[iCurWheelItem++];
			WID.Load( TYPE_SONG, pSong, sThisSection, SONGMAN->GetGroupColor(pSong->GetGroupName()) );
		}
		arrayWheelItemDatas.SetSize( iCurWheelItem );	// make sure we have enough room for all music and section items	
	}
	else
	{
		arrayWheelItemDatas.SetSize( arraySongs.GetSize() );
		{
			for( int i=0; i<arraySongs.GetSize(); i++ )
			{
				Song* pSong = arraySongs[i];
				WheelItemData &WID = arrayWheelItemDatas[i];
				WID.Load( TYPE_SONG, pSong, "", SONGMAN->GetGroupColor(pSong->GetGroupName()) );
			}
		}
	}

	// init crowns
	for( i=0; i<arrayWheelItemDatas.GetSize(); i++ )
	{
		Song* pSong = arrayWheelItemDatas[i].m_pSong;
		if( pSong != NULL )
		{
			arrayWheelItemDatas[i].m_MusicStatusDisplayType = (pSong->GetNumTimesPlayed()==0) ? TYPE_NEW : TYPE_NONE;
		}		
	}

	if( so == SORT_MOST_PLAYED )
	{
		// init crown icons 
		for( int i=0; i<arrayWheelItemDatas.GetSize() && i<3; i++ )
		{
			arrayWheelItemDatas[i].m_MusicStatusDisplayType = MusicStatusDisplayType(TYPE_CROWN1 + i);
		}
	}



	if( arrayWheelItemDatas.GetSize() == 0 )
	{
		arrayWheelItemDatas.SetSize( 1 );
		arrayWheelItemDatas[0].Load( TYPE_SECTION, NULL, "NO SONGS", D3DXCOLOR(1,0,0,1) );
	}
	else
	{
		arrayWheelItemDatas.SetSize( arrayWheelItemDatas.GetSize()+1 );
		arrayWheelItemDatas[arrayWheelItemDatas.GetSize()-1].Load( TYPE_ROULETTE, NULL, "", D3DXCOLOR(1,0,0,1) );
	}
}

void MusicWheel::SwitchSortOrder()
{
	
}

float MusicWheel::GetBannerY( float fPosOffsetsFromMiddle )
{
	return (float)roundf( fPosOffsetsFromMiddle*44 );
}

float MusicWheel::GetBannerBrightness( float fPosOffsetsFromMiddle )
{
	//return 1 - fabsf(fPosOffsetsFromMiddle)*0.11f;
	return 1;
}

float MusicWheel::GetBannerAlpha( float fPosOffsetsFromMiddle )
{
	/*
	if( m_WheelState == STATE_FLYING_OFF_BEFORE_NEXT_SORT 
	 || m_WheelState == STATE_TWEENING_OFF_SCREEN  )
	{
		return m_fTimeLeftInState / FADE_TIME;
	}
	else if( m_WheelState == STATE_FLYING_ON_AFTER_NEXT_SORT
		  || m_WheelState == STATE_TWEENING_ON_SCREEN )
	{
		return 1 - (m_fTimeLeftInState / FADE_TIME);
	}
	else if( m_WheelState == STATE_WAITING_OFF_SCREEN )
	{
		return 0;
	}
	else
	{
		return 1;
	}
	*/
	return 1;
}

float MusicWheel::GetBannerX( float fPosOffsetsFromMiddle )
{	
	float fX = (1-cosf((fPosOffsetsFromMiddle)/3))*95.0f;
	
	float fPercentOffScreen = 0;
	switch( m_WheelState )
	{
	case STATE_FLYING_OFF_BEFORE_NEXT_SORT:
	case STATE_TWEENING_OFF_SCREEN:
		fPercentOffScreen = 1 - (m_fTimeLeftInState / FADE_TIME);
		break;
	case STATE_FLYING_ON_AFTER_NEXT_SORT:
	case STATE_TWEENING_ON_SCREEN:
		fPercentOffScreen = m_fTimeLeftInState / FADE_TIME;
		break;
	default:
		fPercentOffScreen = 1;
		break;
	}

	switch( m_WheelState )
	{
	case STATE_FLYING_OFF_BEFORE_NEXT_SORT:
	case STATE_TWEENING_OFF_SCREEN:
	case STATE_FLYING_ON_AFTER_NEXT_SORT:
	case STATE_TWEENING_ON_SCREEN:
		{
		/*
		float fDistFromCenter = fabsf( fPosOffsetsFromMiddle );
		float fPercentOffScreen = 1- (m_fTimeLeftInState / FADE_TIME);
		float fXLogicalOffset = max( 0, fPercentOffScreen - 1 + (fDistFromCenter+3)/6 );
		fXLogicalOffset = powf( fXLogicalOffset, 1.7f );	// accelerate 
		float fXPixelOffset = fXLogicalOffset * 600;
		fX += fXPixelOffset;
		*/
		const float fShift = fPosOffsetsFromMiddle/NUM_WHEEL_ITEMS_TO_DRAW - 0.5f;	// this is always < 0
		const float fXTween = fShift * 800 + fPercentOffScreen * 1200;
		fX = max( fX, fXTween );
		}
		break;
	}

	return (float)roundf( fX );
}

void MusicWheel::RebuildWheelItemDisplays()
{
	// rewind to first index that will be displayed;
	int iIndex = m_iSelection;
	if( m_iSelection > GetCurWheelItemDatas().GetSize()-1 )
		m_iSelection = 0;

	for( int i=0; i<NUM_WHEEL_ITEMS_TO_DRAW/2; i++ )
	{
		do
		{
			iIndex--;
			if( iIndex < 0 )
				iIndex = GetCurWheelItemDatas().GetSize()-1;
		} 
		while( GetCurWheelItemDatas()[iIndex].m_WheelItemType == TYPE_SONG 
			&& GetCurWheelItemDatas()[iIndex].m_sSectionName != ""
			&& GetCurWheelItemDatas()[iIndex].m_sSectionName != m_sExpandedSectionName );
	}

	// iIndex is now the index of the lowest WheelItem to draw
	for( i=0; i<NUM_WHEEL_ITEMS_TO_DRAW; i++ )
	{
		WheelItemData&    data    = GetCurWheelItemDatas()[iIndex];
		WheelItemDisplay& display = m_WheelItemDisplays[i];

		display.LoadFromWheelItemData( &data );

		// increment iIndex
		do
		{
			iIndex++;
			if( iIndex > GetCurWheelItemDatas().GetSize()-1 )
				iIndex = 0;
		} 
		while( GetCurWheelItemDatas()[iIndex].m_WheelItemType == TYPE_SONG 
			&& GetCurWheelItemDatas()[iIndex].m_sSectionName != ""
			&& GetCurWheelItemDatas()[iIndex].m_sSectionName != m_sExpandedSectionName );
	}

}

void MusicWheel::NotesChanged( PlayerNumber pn )	// update grade graphics and top score
{
	DifficultyClass dc = PREFSMAN->m_PreferredDifficultyClass[pn];
	Song* pSong = SONGMAN->m_pCurSong;
	Notes* m_pNotes = SONGMAN->m_pCurNotes[pn];
	
	if( m_pNotes )
		m_HighScore[pn].SetScore( (float)m_pNotes->m_iTopScore );

	for( int i=0; i<NUM_WHEEL_ITEMS_TO_DRAW; i++ )
	{
		WheelItemDisplay& display = m_WheelItemDisplays[i];
		display.RefreshGrades();
	}
}



void MusicWheel::DrawPrimitives()
{
	for( int i=0; i<NUM_WHEEL_ITEMS_TO_DRAW; i++ )
	{
		WheelItemDisplay& display = m_WheelItemDisplays[i];

		float fThisBannerPositionOffsetFromSelection = i - NUM_WHEEL_ITEMS_TO_DRAW/2 + m_fPositionOffsetFromSelection;

		float fY = GetBannerY( fThisBannerPositionOffsetFromSelection );
		if( fY < -SCREEN_HEIGHT/2  ||  fY > SCREEN_HEIGHT/2 )
			continue; // skip

		float fX = GetBannerX( fThisBannerPositionOffsetFromSelection );
		display.SetXY( fX, fY );

		float fBrightness = GetBannerBrightness( m_fPositionOffsetFromSelection );
		float fAlpha = GetBannerAlpha( m_fPositionOffsetFromSelection );

		display.SetDiffuseColor( D3DXCOLOR(fBrightness, fBrightness, fBrightness, fAlpha) );
		display.Draw();
	}


	ActorFrame::DrawPrimitives();
}

void MusicWheel::Update( float fDeltaTime )
{
	ActorFrame::Update( fDeltaTime );


	for( int i=0; i<NUM_WHEEL_ITEMS_TO_DRAW; i++ )
	{
		WheelItemDisplay& display = m_WheelItemDisplays[i];

		display.Update( fDeltaTime );
	}

	float fScrollPercentage = (m_iSelection-m_fPositionOffsetFromSelection) / (float)GetCurWheelItemDatas().GetSize();
	m_ScrollBar.SetPercentage( fScrollPercentage );


	// update wheel state
	m_fTimeLeftInState -= fDeltaTime;
	if( m_fTimeLeftInState <= 0 )	// time to go to a new state
	{
		switch( m_WheelState )
		{
		case STATE_SWITCHING_MUSIC:
			m_WheelState = STATE_IDLE;	// now, wait for input
			SCREENMAN->SendMessageToTopScreen( SM_PlaySongSample, 0 );
			break;
		case STATE_FLYING_OFF_BEFORE_NEXT_SORT:
			{
			m_WheelState = STATE_FLYING_ON_AFTER_NEXT_SORT;
			m_fTimeLeftInState = FADE_TIME;

			Song* pPrevSelectedSong = GetCurWheelItemDatas()[m_iSelection].m_pSong;
			CString sPrevSelectedSection = GetCurWheelItemDatas()[m_iSelection].m_sSectionName;

			// change the sort order
			m_SortOrder = SongSortOrder(m_SortOrder+1);
			if( m_SortOrder > NUM_SORT_ORDERS-1 )
				m_SortOrder = (SongSortOrder)0;
			m_sExpandedSectionName = GetSectionNameFromSongAndSort( pPrevSelectedSong, m_SortOrder );
			//RebuildWheelItems();

			m_MusicSortDisplay.Set( m_SortOrder );
			m_MusicSortDisplay.BeginTweening( FADE_TIME, TWEEN_BIAS_BEGIN );
			m_MusicSortDisplay.SetTweenXY( SORT_ICON_ON_SCREEN_X, SORT_ICON_ON_SCREEN_Y );


			m_iSelection = 0;

			if( pPrevSelectedSong != NULL )		// the previous selected item was a song
			{
				// find the previously selected song, and select it
				for( i=0; i<GetCurWheelItemDatas().GetSize(); i++ )
				{
					if( GetCurWheelItemDatas()[i].m_pSong == pPrevSelectedSong )
					{
						m_iSelection = i;
						break;
					}
				}
			}
			else	// the previously selected item was a section
			{
				// find the previously selected song, and select it
				for( i=0; i<GetCurWheelItemDatas().GetSize(); i++ )
				{
					if( GetCurWheelItemDatas()[i].m_sSectionName == sPrevSelectedSection )
					{
						m_iSelection = i;
						break;
					}
				}
			}

			RebuildWheelItemDisplays();

			}
			break;
		case STATE_FLYING_ON_AFTER_NEXT_SORT:
			SCREENMAN->SendMessageToTopScreen( SM_PlaySongSample, 0 );
			m_WheelState = STATE_IDLE;	// now, wait for input
			break;
		case STATE_TWEENING_ON_SCREEN:
			SCREENMAN->SendMessageToTopScreen( SM_PlaySongSample, 0 );
			m_WheelState = STATE_IDLE;
			m_fTimeLeftInState = 0;
			break;
		case STATE_TWEENING_OFF_SCREEN:
			m_WheelState = STATE_WAITING_OFF_SCREEN;
			m_fTimeLeftInState = 0;
			break;
		case STATE_IDLE:
			m_fTimeLeftInState = 0;
			break;
		}
	}

	// "rotate" wheel toward selected song

	if( fabsf(m_fPositionOffsetFromSelection) < 0.02f )
		m_fPositionOffsetFromSelection = 0;
	else
	{
		m_fPositionOffsetFromSelection -= fDeltaTime * m_fPositionOffsetFromSelection*4;	// linear
		float fSign = m_fPositionOffsetFromSelection / fabsf(m_fPositionOffsetFromSelection);
		m_fPositionOffsetFromSelection -= fDeltaTime * fSign;	// constant
	}
}


void MusicWheel::PrevMusic()
{
	switch( m_WheelState )
	{
	case STATE_IDLE:
	case STATE_SWITCHING_MUSIC:
		break;	// fall through
	default:
		return;	// don't fall through
	}

	MUSIC->Stop();

	// decrement m_iSelection
	do
	{
		m_iSelection--;
		if( m_iSelection < 0 )
			m_iSelection = GetCurWheelItemDatas().GetSize()-1;
	} 
	while( GetCurWheelItemDatas()[m_iSelection].m_WheelItemType == TYPE_SONG 
		&& GetCurWheelItemDatas()[m_iSelection].m_sSectionName != ""
		&& GetCurWheelItemDatas()[m_iSelection].m_sSectionName != m_sExpandedSectionName );

	RebuildWheelItemDisplays();

	m_fPositionOffsetFromSelection -= 1;

	m_WheelState = STATE_SWITCHING_MUSIC;
	m_fTimeLeftInState = SWITCH_MUSIC_TIME;
	m_soundChangeMusic.Play();
}

void MusicWheel::NextMusic()
{
	switch( m_WheelState )
	{
	case STATE_IDLE:
	case STATE_SWITCHING_MUSIC:
		break;	// fall through
	default:
		return;	// don't continue
	}

	MUSIC->Stop();

	// increment m_iSelection
	do
	{
		m_iSelection++;
		if( m_iSelection > GetCurWheelItemDatas().GetSize()-1 )
			m_iSelection = 0;
	} 
	while( GetCurWheelItemDatas()[m_iSelection].m_WheelItemType == TYPE_SONG 
		&& GetCurWheelItemDatas()[m_iSelection].m_sSectionName != ""
		&& GetCurWheelItemDatas()[m_iSelection].m_sSectionName != m_sExpandedSectionName );

	RebuildWheelItemDisplays();

	m_fPositionOffsetFromSelection += 1;

	m_WheelState = STATE_SWITCHING_MUSIC;
	m_fTimeLeftInState = SWITCH_MUSIC_TIME;
	m_soundChangeMusic.Play();
}

void MusicWheel::PrevSort()
{
	NextSort();
}

void MusicWheel::NextSort()
{
	switch( m_WheelState )
	{
	case STATE_IDLE:
	case STATE_SWITCHING_MUSIC:
	case STATE_FLYING_ON_AFTER_NEXT_SORT:
		break;	// fall through
	default:
		return;	// don't continue
	}

	MUSIC->Stop();

	m_soundChangeSort.Play();
	m_MusicSortDisplay.BeginTweening( FADE_TIME, TWEEN_BIAS_END );
	m_MusicSortDisplay.SetTweenXY( SORT_ICON_OFF_SCREEN_X, SORT_ICON_OFF_SCREEN_Y );

	m_WheelState = STATE_FLYING_OFF_BEFORE_NEXT_SORT;
	m_fTimeLeftInState = FADE_TIME;
}

bool MusicWheel::Select()
{
	switch( GetCurWheelItemDatas()[m_iSelection].m_WheelItemType )
	{
	case TYPE_SECTION:
		{
		CString sThisItemSectionName = GetCurWheelItemDatas()[m_iSelection].m_sSectionName;
		if( m_sExpandedSectionName == sThisItemSectionName )	// already expanded
			m_sExpandedSectionName = "";		// collapse it
		else				// already collapsed
			m_sExpandedSectionName = sThisItemSectionName;	// expand it

	
		RebuildWheelItemDisplays();


		m_soundExpand.Play();


		m_iSelection = 0;	// reset in case we can't find the last selected song
		// find the section header and select it
		for( int i=0; i<GetCurWheelItemDatas().GetSize(); i++ )
		{
			if( GetCurWheelItemDatas()[i].m_WheelItemType == TYPE_SECTION  
				&&  GetCurWheelItemDatas()[i].m_sSectionName == sThisItemSectionName )
			{
				m_iSelection = i;
				break;
			}
		}

		}
		return false;
	case TYPE_ROULETTE:
		return false;

	case TYPE_SONG:
	default:
		
		return true;
	}
}

void MusicWheel::TweenOnScreen() 
{
	m_WheelState = STATE_TWEENING_ON_SCREEN;
	m_fTimeLeftInState = FADE_TIME; 

	float fOriginalZoomY;
	fOriginalZoomY = m_sprSelectionOverlay.GetZoomY();
	m_sprSelectionOverlay.SetZoomY( 0 );
	m_sprSelectionOverlay.BeginTweening( FADE_TIME );
	m_sprSelectionOverlay.SetTweenZoomY( fOriginalZoomY );

}
						   
						   
void MusicWheel::TweenOffScreen()
{
	m_WheelState = STATE_TWEENING_OFF_SCREEN;
	m_fTimeLeftInState = FADE_TIME;

	m_sprSelectionOverlay.BeginTweening( FADE_TIME );
	m_sprSelectionOverlay.SetTweenZoomY( 0 );

	m_MusicSortDisplay.BeginTweening( FADE_TIME, TWEEN_BIAS_END );
	m_MusicSortDisplay.SetTweenXY( SORT_ICON_OFF_SCREEN_X, SORT_ICON_OFF_SCREEN_Y );
}