#include "global.h"
#include "GameCommand.h"
#include "RageUtil.h"
#include "RageLog.h"
#include "GameManager.h"
#include "GameState.h"
#include "RageDisplay.h"
#include "AnnouncerManager.h"
#include "ProfileManager.h"
#include "StepMania.h"
#include "ScreenManager.h"
#include "SongManager.h"
#include "PrefsManager.h"
#include "arch/ArchHooks/ArchHooks.h"
#include "MemoryCardManager.h"
#include "song.h"
#include "Game.h"
#include "Style.h"
#include "Foreach.h"
#include "Command.h"
#include "arch/Dialog/Dialog.h"
#include "Bookkeeper.h"
#include "UnlockSystem.h"
#include "GameSoundManager.h"
#include "ThemeManager.h"
#include "PlayerState.h"

void GameCommand::Init()
{
	m_sName = "";
	m_bInvalid = true;
	m_iIndex = -1;
	m_pGame = NULL;
	m_pStyle = NULL;
	m_pm = PLAY_MODE_INVALID;
	m_dc = DIFFICULTY_INVALID;
	m_CourseDifficulty = DIFFICULTY_INVALID;
	m_sModifiers = "";
	m_sAnnouncer = "";
	m_sScreen = "";
	m_pSong = NULL;
	m_pSteps = NULL;
	m_pCourse = NULL;
	m_pTrail = NULL;
	m_pCharacter = NULL;
	m_SortOrder = SORT_INVALID;
	m_iUnlockIndex = -1;
	m_sSoundPath = "";
	m_vsScreensToPrepare.clear();
	m_bDeletePreparedScreens = false;

	m_bClearBookkeepingData = false;
	m_bClearMachineStats = false;
	m_bTransferStatsFromMachine = false;
	m_bTransferStatsToMachine = false;
	m_bInsertCredit = false;
	m_bResetToFactoryDefaults = false;
	m_bStopMusic = false;
	m_bApplyDefaultOptions = false;
}

bool CompareSongOptions( const SongOptions &so1, const SongOptions &so2 );

bool GameCommand::DescribesCurrentModeForAllPlayers() const
{
	FOREACH_HumanPlayer( pn )
		if( !DescribesCurrentMode(pn) )
			return false;

	return true;
}

bool GameCommand::DescribesCurrentMode( PlayerNumber pn ) const
{
	if( m_pGame != NULL && m_pGame != GAMESTATE->m_pCurGame )
		return false;
	if( m_pm != PLAY_MODE_INVALID && GAMESTATE->m_PlayMode != m_pm )
		return false;
	if( m_pStyle && GAMESTATE->m_pCurStyle != m_pStyle )
		return false;
	// HACK: don't compare m_dc if m_pSteps is set.  This causes problems 
	// in ScreenSelectOptionsMaster::ImportOptions if m_PreferredDifficulty 
	// doesn't match the difficulty of m_pCurSteps.
	if( m_pSteps == NULL  &&  m_dc != DIFFICULTY_INVALID )
	{
		// Why is this checking for all players?
		FOREACH_PlayerNumber( pn )
			if( GAMESTATE->IsHumanPlayer(pn) && GAMESTATE->m_PreferredDifficulty[pn] != m_dc )
				return false;
	}
		
	if( m_sAnnouncer != "" && m_sAnnouncer != ANNOUNCER->GetCurAnnouncerName() )
		return false;

	if( m_sModifiers != "" )
	{
		/* Apply modifiers. */
		PlayerOptions po = GAMESTATE->m_pPlayerState[pn]->m_PlayerOptions;
		SongOptions so = GAMESTATE->m_SongOptions;
		po.FromString( m_sModifiers );
		so.FromString( m_sModifiers );

		if( po != GAMESTATE->m_pPlayerState[pn]->m_PlayerOptions )
			return false;
		if( so != GAMESTATE->m_SongOptions )
			return false;
	}

	if( m_pSong && GAMESTATE->m_pCurSong != m_pSong )
		return false;
	if( m_pSteps && GAMESTATE->m_pCurSteps[pn] != m_pSteps )
		return false;
	if( m_pCharacter && GAMESTATE->m_pCurCharacters[pn] != m_pCharacter )
		return false;
	if( m_pTrail && GAMESTATE->m_pCurTrail[pn] != m_pTrail )
		return false;
	if( m_SortOrder != SORT_INVALID && GAMESTATE->m_SortOrder != m_SortOrder )
		return false;

	return true;
}

void GameCommand::Load( int iIndex, const Commands& cmds )
{
	m_iIndex = iIndex;

	m_bInvalid = false;

	CString sSteps;

	FOREACH_CONST( Command, cmds.v, command )
	{
		CString sName = command->GetName();
		if( sName.empty() )
			continue;
		
		CString sValue;
		for( unsigned i = 1; i < command->m_vsArgs.size(); ++i )
		{
			if( i > 1 )
				sValue += ",";
			sValue += (CString) command->GetArg(i);
		}

		if( sName == "game" )
		{
			const Game* pGame = GAMEMAN->StringToGameType( sValue );
			if( pGame != NULL )
				m_pGame = pGame;
			else
				m_bInvalid |= true;
		}

		else if( sName == "style" )
		{
			const Style* style = GAMEMAN->GameAndStringToStyle( GAMESTATE->m_pCurGame, sValue );
			if( style )
				m_pStyle = style;
			else
				m_bInvalid |= true;
		}

		else if( sName == "playmode" )
		{
			PlayMode pm = StringToPlayMode( sValue );
			if( pm != PLAY_MODE_INVALID )
				m_pm = pm;
			else
				m_bInvalid |= true;
		}

		else if( sName == "difficulty" )
		{
			Difficulty dc = StringToDifficulty( sValue );
			if( dc != DIFFICULTY_INVALID )
				m_dc = dc;
			else
				m_bInvalid |= true;
		}

		else if( sName == "announcer" )
		{
			m_sAnnouncer = sValue;
		}
		
		else if( sName == "name" )
		{
			m_sName = sValue;
		}

		else if( sName == "mod" )
		{
			if( m_sModifiers != "" )
				m_sModifiers += ",";
			m_sModifiers += sValue;
		}
		
		else if( sName == "song" )
		{
			m_pSong = SONGMAN->FindSong( sValue );
			if( m_pSong == NULL )
			{
				m_sInvalidReason = ssprintf( "Song \"%s\" not found", sValue.c_str() );
				m_bInvalid |= true;
			}
		}

		else if( sName == "steps" )
		{
			/* Save the name of the steps, and set this later, since we want to process
			 * any "song" and "style" commands first. */
			sSteps = sValue;
		}

		else if( sName == "course" )
		{
			m_pCourse = SONGMAN->FindCourse( sValue );
			if( m_pCourse == NULL )
			{
				m_sInvalidReason = ssprintf( "Course \"%s\" not found", sValue.c_str() );
				m_bInvalid |= true;
			}
		}
		
		else if( sName == "screen" )
		{
			m_sScreen = sValue;
		}
		
		else if( sName == "setenv" )
		{
			if( command->m_vsArgs.size() == 3 )
				m_SetEnv[ command->m_vsArgs[1] ] = command->m_vsArgs[2];
		}
		
		else if( sName == "songgroup" )
		{
			m_sSongGroup = sValue;
		}

		else if( sName == "sort" )
		{
			m_SortOrder = StringToSortOrder( sValue );
			if( m_SortOrder == SORT_INVALID )
			{
				m_sInvalidReason = ssprintf( "SortOrder \"%s\" is not valid.", sValue.c_str() );
				m_bInvalid |= true;
			}
		}
		
		else if( sName == "unlock" )
		{
			m_iUnlockIndex = atoi( sValue );
		}
		
		else if( sName == "sound" )
		{
			m_sSoundPath = sValue;
		}

		else if( sName == "preparescreen" )
		{
			m_vsScreensToPrepare.push_back( sValue );
		}
		
		else if( sName == "deletepreparedscreens" )
		{
			m_bDeletePreparedScreens = true;
		}
		
		else if( sName == "clearbookkeepingdata" )
		{
			m_bClearBookkeepingData = true;
		}
		else if( sName == "clearmachinestats" )
		{
			m_bClearMachineStats = true;
		}
		else if( sName == "transferstatsfrommachine" )
		{
			m_bTransferStatsFromMachine = true;
		}
		else if( sName == "transferstatstomachine" )
		{
			m_bTransferStatsToMachine = true;
		}
		else if( sName == "insertcredit" )
		{
			m_bInsertCredit = true;
		}
		else if( sName == "resettofactorydefaults" )
		{
			m_bResetToFactoryDefaults = true;
		}
		else if( sName == "stopmusic" )
		{
			m_bStopMusic = true;
		}
		else if( sName == "applydefaultoptions" )
		{
			m_bApplyDefaultOptions = true;
		}

		else
		{
			CString sWarning = ssprintf( "Command '%s' is not valid.", command->GetOriginalCommandString().c_str() );
			LOG->Warn( sWarning );
			Dialog::OK( sWarning, "INVALID_GAME_COMMAND" );
		}
	}

	if( !m_bInvalid && sSteps != "" )
	{
		Song *pSong = (m_pSong != NULL)? m_pSong:GAMESTATE->m_pCurSong;
		const Style *style = m_pStyle ? m_pStyle : GAMESTATE->m_pCurStyle;
		if( pSong == NULL || style == NULL )
			RageException::Throw( "Must set Song and Style to set Steps" );

		Difficulty dc = StringToDifficulty( sSteps );
		if( dc != DIFFICULTY_EDIT )
			m_pSteps = pSong->GetStepsByDifficulty( m_pStyle->m_StepsType, dc );
		else
			m_pSteps = pSong->GetStepsByDescription( m_pStyle->m_StepsType, sSteps );
		if( m_pSteps == NULL )
		{
			m_sInvalidReason = "steps not found";
			m_bInvalid |= true;
		}
	}
}

int GetNumCreditsPaid()
{
	int iNumCreditsPaid = GAMESTATE->GetNumSidesJoined();

	// players other than the first joined for free
	if( PREFSMAN->GetPremium() == PREMIUM_JOINT )
		iNumCreditsPaid = min( iNumCreditsPaid, 1 );

	return iNumCreditsPaid;
}


int GetCreditsRequiredToPlayStyle( const Style *style )
{
	if( PREFSMAN->GetPremium() == PREMIUM_JOINT )
		return 1;

	switch( style->m_StyleType )
	{
	case ONE_PLAYER_ONE_SIDE:
		return 1;
	case TWO_PLAYERS_TWO_SIDES:
		return 2;
	case ONE_PLAYER_TWO_SIDES:
		return (PREFSMAN->GetPremium() == PREMIUM_DOUBLES) ? 1 : 2;
	default:
		ASSERT(0);
		return 1;
	}
}

static bool AreStyleAndPlayModeCompatible( const Style *style, PlayMode pm )
{
	if( style == NULL || pm == PLAY_MODE_INVALID )
		return true;

	switch( pm )
	{
	case PLAY_MODE_BATTLE:
	case PLAY_MODE_RAVE:
		// Can't play rave if there isn't enough room for two players.
		// This is correct for dance (ie, no rave for solo and doubles),
		// and should be okay for pump .. not sure about other game types.
		// Techno Motion scales down versus arrows, though, so allow this.
		if( style->m_iColsPerPlayer >= 6 && CString(GAMESTATE->m_pCurGame->m_szName) != "techno" )
			return false;
		
		/* Don't allow battle modes if the style takes both sides. */
		if( style->m_StyleType==ONE_PLAYER_TWO_SIDES )
			return false;
	}

	return true;
}

bool GameCommand::IsPlayable( CString *why ) const
{
	if( m_bInvalid )
	{
		if( why )
			*why = m_sInvalidReason;
		return false;
	}

	if ( m_pStyle )
	{
		int iCredits = GAMESTATE->m_iCoins / PREFSMAN->m_iCoinsPerCredit;
		const int iNumCreditsPaid = GetNumCreditsPaid();
		const int iNumCreditsRequired = GetCreditsRequiredToPlayStyle(m_pStyle);
		
		switch( PREFSMAN->GetCoinMode() )
		{
		case COIN_HOME:
		case COIN_FREE:
			iCredits = NUM_PLAYERS; /* not iNumCreditsPaid */
		}
		
		/* With PREFSMAN->m_bDelayedCreditsReconcile disabled, enough credits must be
		 * paid.  (This means that enough sides must be joined.)  Enabled, simply having
		 * enough credits lying in the machine is sufficient; we'll deduct the extra in
		 * Apply(). */
		int iNumCreditsAvailable = iNumCreditsPaid;
		if( PREFSMAN->m_bDelayedCreditsReconcile )
			iNumCreditsAvailable += iCredits;

		if( iNumCreditsAvailable < iNumCreditsRequired )
		{
			if( why )
				*why = ssprintf( "need %i credits, have %i", iNumCreditsRequired, iNumCreditsAvailable );
			return false;
		}

		/* If you've paid too much already, don't allow the mode.  (If we allow this,
		 * the credits will be "refunded" in Apply(), but that's confusing.) */
		/* Do allow the mode if they've already joined in more credits than 
		 * are required.  Otherwise, people who put in two credits to play 
		 * doubles on a doubles-premium machiune will get locked out.
		 * the refund logic isn't that awkward because you never see the 
		 * credits number jump up - the credits display is hidden if both 
		 * sides are joined. -Chris */
		//if( PREFSMAN->m_iCoinMode == COIN_PAY && iNumCreditsPaid > iNumCreditsRequired )
		//{
		//	if( why )
		//		*why = ssprintf( "too many credits paid (%i > %i)", iNumCreditsPaid, iNumCreditsRequired );
		//	return false;
		//}

		/* If both sides are joined, disallow singles modes, since easy to select them
		 * accidentally, instead of versus mode. */
		if( m_pStyle->m_StyleType == ONE_PLAYER_ONE_SIDE &&
			GAMESTATE->GetNumSidesJoined() > 1 )
		{
			if( why )
				*why = "too many players joined for ONE_PLAYER_ONE_CREDIT";
			return false;
		}
	}

	/* Don't allow a PlayMode that's incompatible with our current Style (if set),
	 * and vice versa. */
	if( m_pm != PLAY_MODE_INVALID || m_pStyle != NULL )
	{
		const PlayMode pm = (m_pm != PLAY_MODE_INVALID) ? m_pm : GAMESTATE->m_PlayMode;
		const Style *style = (m_pStyle != NULL)? m_pStyle: GAMESTATE->m_pCurStyle;
		if( !AreStyleAndPlayModeCompatible( style, pm ) )
		{
			if( why )
				*why = ssprintf("mode %s is incompatible with style %s",
					PlayModeToString(pm).c_str(), style->m_szName );

			return false;
		}
	}

	if( !m_sScreen.CompareNoCase("ScreenEditCoursesMenu") )
	{
		vector<Course*> vCourses;
		SONGMAN->GetAllCourses( vCourses, false );

		if( vCourses.size() == 0 )
		{
			if( why )
				*why = "No courses are installed";
			return false;
		}
	}

	if( !m_sScreen.CompareNoCase("ScreenJukeboxMenu") ||
		!m_sScreen.CompareNoCase("ScreenEditMenu") ||
		!m_sScreen.CompareNoCase("ScreenEditCoursesMenu") )
	{
		if( SONGMAN->GetNumSongs() == 0 )
		{
			if( why )
				*why = "No songs are installed";
			return false;
		}
	}

	return true;
}

void GameCommand::ApplyToAllPlayers() const
{
	vector<PlayerNumber> vpns;

	FOREACH_HumanPlayer( pn )
		vpns.push_back( pn );

	Apply( vpns );
}

void GameCommand::Apply( PlayerNumber pn ) const
{
	if( !GAMESTATE->IsHumanPlayer(pn) )
		return;

	vector<PlayerNumber> vpns;
	vpns.push_back( pn );
	Apply( vpns );
}

void GameCommand::Apply( const vector<PlayerNumber> &vpns ) const
{
	const PlayMode OldPlayMode = GAMESTATE->m_PlayMode;

	if( m_pGame != NULL )
		GAMESTATE->m_pCurGame = m_pGame;
	if( m_pm != PLAY_MODE_INVALID )
		GAMESTATE->m_PlayMode = m_pm;

	if( m_pStyle != NULL )
	{
		GAMESTATE->m_pCurStyle = m_pStyle;

		// It's possible to choose a style that didn't have enough 
		// players joined.  If enough players aren't joined, then 
		// we need to subtract credits for the sides that will be
		// joined as a result of applying this option.
		if( PREFSMAN->m_CoinMode == COIN_PAY )
		{
			int iNumCreditsRequired = GetCreditsRequiredToPlayStyle(m_pStyle);
			int iNumCreditsPaid = GetNumCreditsPaid();
			int iNumCreditsOwed = iNumCreditsRequired - iNumCreditsPaid;
			GAMESTATE->m_iCoins -= iNumCreditsOwed * PREFSMAN->m_iCoinsPerCredit;
			LOG->Trace( "Deducted %i coins, %i remaining",
					iNumCreditsOwed * PREFSMAN->m_iCoinsPerCredit, GAMESTATE->m_iCoins );
		}


		// If only one side is joined and we picked a style
		// that requires both sides, join the other side.
		switch( m_pStyle->m_StyleType )
		{
		case ONE_PLAYER_ONE_SIDE:
			break;
		case TWO_PLAYERS_TWO_SIDES:
		case ONE_PLAYER_TWO_SIDES:
			{
				FOREACH_PlayerNumber( p )
					GAMESTATE->m_bSideIsJoined[p] = true;
			}
			break;
		default:
			ASSERT(0);
		}
	}
	if( m_dc != DIFFICULTY_INVALID  )
		FOREACH_CONST( PlayerNumber, vpns, pn )
			GAMESTATE->ChangePreferredDifficulty( *pn, m_dc );
	if( m_sAnnouncer != "" )
		ANNOUNCER->SwitchAnnouncer( m_sAnnouncer );
	if( m_sModifiers != "" )
		FOREACH_CONST( PlayerNumber, vpns, pn )
			GAMESTATE->ApplyModifiers( *pn, m_sModifiers );
	if( m_sScreen != "" )
		SCREENMAN->SetNewScreen( m_sScreen );
	if( m_pSong )
	{
		GAMESTATE->m_pCurSong = m_pSong;
		GAMESTATE->m_pPreferredSong = m_pSong;
	}
	if( m_pSteps )
		FOREACH_CONST( PlayerNumber, vpns, pn )
			GAMESTATE->m_pCurSteps[*pn] = m_pSteps;
	if( m_pCourse )
	{
		GAMESTATE->m_pCurCourse = m_pCourse;
		GAMESTATE->m_pPreferredCourse = m_pCourse;
	}
	if( m_pTrail )
		FOREACH_CONST( PlayerNumber, vpns, pn )
			GAMESTATE->m_pCurTrail[*pn] = m_pTrail;
	if( m_CourseDifficulty != DIFFICULTY_INVALID )
		FOREACH_CONST( PlayerNumber, vpns, pn )
			GAMESTATE->ChangePreferredCourseDifficulty( *pn, m_CourseDifficulty );
	if( m_pCharacter )
		FOREACH_CONST( PlayerNumber, vpns, pn )
			GAMESTATE->m_pCurCharacters[*pn] = m_pCharacter;
	for( map<CString,CString>::const_iterator i = m_SetEnv.begin(); i != m_SetEnv.end(); i++ )
		GAMESTATE->m_mapEnv[ i->first ] = i->second;
	if( !m_sSongGroup.empty() )
		GAMESTATE->m_sPreferredSongGroup = m_sSongGroup;
	if( m_SortOrder != SORT_INVALID )
		GAMESTATE->m_SortOrder = m_SortOrder;
	if( m_iUnlockIndex != -1 )
		UNLOCKMAN->UnlockCode( m_iUnlockIndex );
	if( m_sSoundPath != "" )
		SOUND->PlayOnce( THEME->GetPathToS( m_sSoundPath ) );

	/* If we're going to stop music, do so before preparing new screens, so we don't
	 * stop music between preparing screens and loading screens. */
	if( m_bStopMusic )
		SOUND->StopMusic();

	FOREACH_CONST( CString, m_vsScreensToPrepare, s )
		SCREENMAN->PrepareScreen( *s );
	if( m_bDeletePreparedScreens )
		SCREENMAN->DeletePreparedScreens();

	if( m_bClearBookkeepingData )
	{
		BOOKKEEPER->ClearAll();
		BOOKKEEPER->WriteToDisk();
		SCREENMAN->SystemMessage( "Bookkeeping data cleared." );
	}
	if( m_bClearMachineStats )
	{
		Profile* pProfile = PROFILEMAN->GetMachineProfile();
		// don't reset the Guid
		CString sGuid = pProfile->m_sGuid;
		pProfile->InitAll();
		pProfile->m_sGuid = sGuid;
		PROFILEMAN->SaveMachineProfile();
		SCREENMAN->SystemMessage( "Machine stats cleared." );
	}
	if( m_bTransferStatsFromMachine )
	{
		bool bTriedToSave = false;
		FOREACH_PlayerNumber( pn )
		{
			if( MEMCARDMAN->GetCardState(pn) != MEMORY_CARD_STATE_READY )
				continue;	// skip

			MEMCARDMAN->MountUsedCard(pn);

			bTriedToSave = true;

			CString sDir = MEM_CARD_MOUNT_POINT[pn];
			sDir += "MachineProfile/";

			bool bSaved = PROFILEMAN->GetMachineProfile()->SaveAllToDir( sDir, PREFSMAN->m_bSignProfileData );

			MEMCARDMAN->UnmountCard(pn);

			if( bSaved )
				SCREENMAN->SystemMessage( ssprintf("Machine stats saved to P%d card.",pn+1) );
			else
				SCREENMAN->SystemMessage( ssprintf("Error saving machine stats to P%d card.",pn+1) );
			break;
		}

		if( !bTriedToSave )
			SCREENMAN->SystemMessage( "Stats not saved - No memory cards ready." );

		MEMCARDMAN->FlushAndReset();
	}
	if( m_bTransferStatsToMachine )
	{
		bool bTriedToLoad = false;
		FOREACH_PlayerNumber( pn )
		{
			if( MEMCARDMAN->GetCardState(pn) != MEMORY_CARD_STATE_READY )
				continue;	// skip

			MEMCARDMAN->MountUsedCard(pn);

			bTriedToLoad = true;

			CString sDir = MEM_CARD_MOUNT_POINT[pn];
			sDir += "MachineProfile/";

			Profile backup = *PROFILEMAN->GetMachineProfile();

			Profile::LoadResult lr = PROFILEMAN->GetMachineProfile()->LoadAllFromDir( sDir, PREFSMAN->m_bSignProfileData );
			switch( lr )
			{
			case Profile::success:
				SCREENMAN->SystemMessage( ssprintf("Machine stats loaded from P%d card.",pn+1) );
				break;
			case Profile::failed_no_profile:
				SCREENMAN->SystemMessage( ssprintf("There is no profile on P%d card.",pn+1) );
				*PROFILEMAN->GetMachineProfile() = backup;
				break;
			case Profile::failed_tampered:
				SCREENMAN->SystemMessage( ssprintf("The profile on P%d card contains corrupt or tampered data.",pn+1) );
				*PROFILEMAN->GetMachineProfile() = backup;
				break;
			default:
				ASSERT(0);
			}

			MEMCARDMAN->UnmountCard(pn);
			break;
		}

		if( !bTriedToLoad )
			SCREENMAN->SystemMessage( "Stats not loaded - No memory cards ready." );

		MEMCARDMAN->FlushAndReset();
	}
	if( m_bInsertCredit )
	{
		InsertCredit();
	}
	if( m_bResetToFactoryDefaults )
	{
		PREFSMAN->ResetToFactoryDefaults();
		SCREENMAN->SystemMessage( "All options reset to factory defaults." );
	}
	if( m_bApplyDefaultOptions )
	{
		FOREACH_PlayerNumber( p )
			GAMESTATE->m_pPlayerState[p]->m_PlayerOptions.FromString( PREFSMAN->m_sDefaultModifiers );
		GAMESTATE->m_SongOptions.FromString( PREFSMAN->m_sDefaultModifiers );
	}

	// HACK:  Set life type to BATTERY just once here so it happens once and 
	// we don't override the user's changes if they back out.
	if( GAMESTATE->m_PlayMode == PLAY_MODE_ONI && GAMESTATE->m_PlayMode != OldPlayMode )
		GAMESTATE->m_SongOptions.m_LifeType = SongOptions::LIFE_BATTERY;
}

bool GameCommand::IsZero() const
{
	if( m_pGame != NULL ||
		m_pm != PLAY_MODE_INVALID ||
		m_pStyle != NULL ||
		m_dc != DIFFICULTY_INVALID ||
		m_sAnnouncer != "" ||
		m_sModifiers != "" ||
		m_pSong != NULL || 
		m_pSteps != NULL || 
		m_pCourse != NULL || 
		m_pTrail != NULL || 
		m_pCharacter != NULL || 
		m_CourseDifficulty != DIFFICULTY_INVALID ||
		m_SortOrder != SORT_INVALID
		)
		return false;

	return true;
}

/*
 * (c) 2001-2004 Chris Danford, Glenn Maynard
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, provided that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the Software and that both the above copyright notice(s) and this
 * permission notice appear in supporting documentation.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
 * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
 * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
 * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */