Added new unlock system, disabled by default

stepmania/src/UnlockSystem.h

@@ -0,0 +1,37 @@
+#ifndef UNLOCK_SYSTEM_H
+#define UNLOCK_SYSTEM_H
+/*
+-----------------------------------------------------------------------------
+ Class: UnlockSystem
+
+ Desc: See header.
+
+ Copyright (c) 2001-2003 by the person(s) listed below.  All rights reserved.
+	Kevin Slaughter
+-----------------------------------------------------------------------------
+*/
+struct SongEntry
+{
+	float	m_fDancePointsRequired;	// Ammount of Dance Points needed to unlock this song
+	CString m_sSongName;	/* Name of the song in the DWI/SM file itself.. This allows
+								for a lot easier compatibility since a lot of people's 
+								song folders are named differantly, song names tend to
+								be the same in the file.*/
+};
+
+
+
+class UnlockSystem
+{
+	public:
+		UnlockSystem();
+		float NumPointsUntilNextUnlock();
+		bool SongIsLocked( CString sSongName );
+		bool LoadFromDATFile( CString sPath );
+		bool	m_bAllSongsAreUnlocked;	// Quick way to check if all songs are unlocked
+		vector<SongEntry>		m_SongEntries;	// All locked songs are stored here
+	
+	private:
+		void SortSongEntriesArray();
+};
+#endif