support setting perspective in DefaultModifiers pref

stepmania/src/GameState.cpp

@@ -274,9 +274,7 @@ bool GameState::IsPlayable( const ModeChoice& mc )
 
 bool GameState::IsPlayerEnabled( PlayerNumber pn )
 {
-	// In battle and rave, all players are present.  Non-human players are CPU controlled.
+	// In rave, all players are present.  Non-human players are CPU controlled.
-	if( m_PlayMode == PLAY_MODE_BATTLE )
-		return true;
 	if( m_PlayMode == PLAY_MODE_RAVE )
 		return true;
 	

stepmania/src/NoteFieldPositioning.cpp

@@ -228,3 +228,12 @@ void NoteFieldPositioning::GetNamesForCurrentGame(vector<CString> &IDs)
 		IDs.push_back(Modes[i].m_Name);
 	}
 }
+
+bool NoteFieldPositioning::IsValidModeForAnyStyle(CString mode) const
+{
+	for(unsigned i = 0; i < Modes.size(); ++i)
+		if(Modes[i].m_Name.CompareNoCase(mode)==0)
+			return true;
+
+	return false;
+}

stepmania/src/NoteFieldPositioning.h

@@ -55,7 +55,8 @@ public:
 	void Load(PlayerNumber pn);
 
 	void GetNamesForCurrentGame(vector<CString> &IDs);
-	bool IsValidModeForCurrentGame(CString mode) const { return GetID(mode) != -1; }
+	bool IsValidModeForCurrentStyle(CString mode) const;
+	bool IsValidModeForAnyStyle(CString mode) const;
 
 private:
 	CString m_Filename;

stepmania/src/PlayerOptions.cpp

@@ -203,7 +203,7 @@ void PlayerOptions::FromString( CString sOptions )
 		else if( sBit == "timingassist")m_bTimingAssist = true;
 		else if( sBit == "incoming" )	m_fPerspectiveTilt = -1;
 		else if( sBit == "space" )		m_fPerspectiveTilt = +1;
-		else if( GAMESTATE->m_pPosition->IsValidModeForCurrentGame(sBit) )
+		else if( GAMESTATE->m_pPosition->IsValidModeForAnyStyle(sBit) )
 			m_sPositioning = sBit;
 		else if( NOTESKIN->DoesNoteSkinExist(sBit) )
 			m_sNoteSkin = sBit;