More Direct Move syntax preparation. If the global variable is not recommended (it will be needed in KSFLoader::LoadFromKSFFile), please advise or make the recommende fixes.

stepmania/src/NotesLoaderKSF.cpp

@@ -10,6 +10,11 @@
 #include "song.h"
 #include "Steps.h"
 
+/* Global variables aren't the best way to go about this, but this 
+ * will be required to start implementing the Direct Move syntax. */
+
+bool KIUComplient;
+
 #if 0
 void KSFLoader::RemoveHoles( NoteData &out, const Song &song )
 {
@@ -159,6 +164,8 @@ bool KSFLoader::LoadFromKSFFile( const RString &sPath, Steps &out, const Song &s
 	for( int t=0; t<13; t++ )
 		iHoldStartRow[t] = -1;
 
+//	LOG->Trace("Getting steps from %s now: 500", sPath.c_str());
+
 	for( unsigned r=0; r<asRows.size(); r++ )
 	{
 		RString& sRowString = asRows[r];
@@ -292,6 +299,9 @@ bool KSFLoader::LoadGlobalData( const RString &sPath, Song &out )
 		RageException::Throw( "Error opening file \"%s\": %s", sPath.c_str(), msd.GetError().c_str() );
 
 	float SMGap1 = 0, SMGap2 = 0, BPM1 = -1, BPMPos2 = -1, BPM2 = -1, BPMPos3 = -1, BPM3 = -1;
+	KIUComplient = false;
+
+//	LOG->Trace("Getting tags for %s now: 300", sPath.c_str());
 	
 	for( unsigned i=0; i < msd.GetNumValues(); i++ )
 	{
@@ -307,13 +317,25 @@ bool KSFLoader::LoadGlobalData( const RString &sPath, Song &out )
 			out.AddBPMSegment( BPMSegment(0, BPM1) );
 		}
 		else if( 0==stricmp(sValueName,"BPM2") )
+		{
+			KIUComplient = true;
 			BPM2 = StringToFloat( sParams[1] );
+		}
 		else if( 0==stricmp(sValueName,"BPM3") )
+		{
+			KIUComplient = true;
 			BPM3 = StringToFloat( sParams[1] );
+		}
 		else if( 0==stricmp(sValueName,"BUNKI") )
+		{
+			KIUComplient = true;
 			BPMPos2 = StringToFloat( sParams[1] ) / 100.0f;
+		}
 		else if( 0==stricmp(sValueName,"BUNKI2") )
+		{
+			KIUComplient = true;
 			BPMPos3 = StringToFloat( sParams[1] ) / 100.0f;
+		}
 		else if( 0==stricmp(sValueName,"STARTTIME") )
 		{
 			SMGap1 = -StringToFloat( sParams[1] )/100;
@@ -321,25 +343,35 @@ bool KSFLoader::LoadGlobalData( const RString &sPath, Song &out )
 		}
 		// This is currently required for more accurate BPM changes.  
 		else if( 0==stricmp(sValueName,"STARTTIME2") )
+		{
+			KIUComplient = true;
 			SMGap2 = -StringToFloat( sParams[1] )/100;
+		}
+		else if ( 0==stricmp(sValueName,"STARTTIME3") )
+		{
+			// STARTTIME3 only ensures this is a KIU complient simfile.
+			KIUComplient = true;
+		}
 		else if( 0==stricmp(sValueName,"TICKCOUNT") ||
 			 0==stricmp(sValueName,"STEP") ||
-			 0==stricmp(sValueName,"DIFFICULTY") ||
+			 0==stricmp(sValueName,"DIFFICULTY"))
-			 0==stricmp(sValueName,"STARTTIME3") )
 		{
 			/* TICKCOUNT, STEP, and DIFFICULTY are handled in LoadFromKSFFile.
-			 * STARTTIME3 is expected but unnecessary. Do not warn. */
+			 * Do not warn for them. */
 			continue;
 		}
 		else
 			LOG->Trace( "Unexpected value named '%s'", sValueName.c_str() );
 	}
 
-	/* At this time, only KSF files that use the traditional syntax can be 
+	/* The KIU BPM syntax puts all of its changes at the top, making it easier
-	 * converted, and even then, not all of them will work smoothly.  The 
+	 * and faster to get the right data.  Otherwise, we've got one of two situations:
-	 * formulas are more accurate at this point, however.  As soon as support 
+	 * a KSF file with no BPM changes whatsoever, or a KSF file with Direct Move
-	 * for the other Pump simulators is supported (mostly Direct Move), this 
+	 * syntax.  Unfortunately, they will require a further scan in order to determine
-	 * section will be expanded. */
+	 * whether or not there are changes, or even stops, within the file.  That will be
+	 * implemented later. */
+	if (KIUComplient)
+	{
 		if( BPM2 > 0 && BPMPos2 > 0 )
 		{
 			const float BeatsPerSecond = BPM1 / 60.0f;
@@ -352,11 +384,13 @@ bool KSFLoader::LoadGlobalData( const RString &sPath, Song &out )
 		if( BPM3 > 0 && BPMPos3 > 0 )
 		{
 			const float BeatsPerSecond = BPM2 / 60.0f;
+			//The line below isn't perfect, but works better than previous versions.
 			const float beat = (BPMPos3 + SMGap2) * BeatsPerSecond;
 			LOG->Trace( "BPM %f, BPS %f, BPMPos3 %f, beat %f",
 			    BPM2, BeatsPerSecond, BPMPos3, beat );
 			out.AddBPMSegment( BPMSegment(BeatToNoteRow(beat), BPM3) );
 		}
+	}	
 
 	/* Try to fill in missing bits of information from the pathname. */
 	{