RageException is a very low-level helper (usable by any code). Eliminate

StepMania.cpp dependency.

stepmania/src/RageException.cpp

@@ -2,7 +2,6 @@
 #include "RageException.h"
 #include "RageUtil.h"
 #include "RageLog.h"
-#include "StepMania.h"
 
 #include <cstdarg>
 
@@ -10,6 +9,12 @@
 #include <windows.h>
 #endif
 
+static void (*g_CleanupHandler)( const RString &sError ) = NULL;
+void RageException::SetCleanupHandler( void (*pHandler)(const RString &sError) )
+{
+	g_CleanupHandler = pHandler;
+}
+
 /* This is no longer actually implemented by throwing an exception, but it acts
  * the same way to code in practice. */
 void RageException::Throw(const char *fmt, ...)
@@ -42,7 +47,10 @@ void RageException::Throw(const char *fmt, ...)
 		DebugBreak();
 #endif
 
-	StepMania::HandleException( error );
+	if( g_CleanupHandler != NULL )
+		g_CleanupHandler( error );
+
+	exit(1);
 }
 
 /*

stepmania/src/RageException.h

@@ -1,4 +1,4 @@
-/* RageException - Class for thowing fatal errors. */
+/* RageException - Class for throwing fatal errors. */
 
 #ifndef RAGE_EXCEPTION_H
 #define RAGE_EXCEPTION_H
@@ -6,6 +6,7 @@
 namespace RageException
 {
 	void NORETURN Throw(const char *fmt, ...);
+	void SetCleanupHandler( void (*pHandler)(const RString &sError) );
 };
 
 #endif

stepmania/src/StepMania.cpp

@@ -270,9 +270,7 @@ void ShutdownGame()
 	SAFE_DELETE( HOOKS );
 }
 
-/* Cleanly shut down, show a dialog and exit the game.  We don't go back
- * up the call stack, to avoid having to use exceptions. */
-void NORETURN StepMania::HandleException( RString error )
+static void HandleException( const RString &sError )
 {
 	if( g_bAutoRestart )
 		HOOKS->RestartProgram();
@@ -281,9 +279,7 @@ void NORETURN StepMania::HandleException( RString error )
 	ShutdownGame();
 
 	/* Throw up a pretty error dialog. */
-	Dialog::Error( error );
-
-	exit(1);
+	Dialog::Error( sError );
 }
 	
 void StepMania::ResetGame()
@@ -896,6 +892,7 @@ int main(int argc, char* argv[])
 #endif
 	
 	RageThreadRegister thread( "Main thread" );
+	RageException::SetCleanupHandler( HandleException );
 	
 	SetCommandlineArguments( argc, argv );
 

stepmania/src/StepMania.h

@@ -14,7 +14,6 @@ int main( int argc, char* argv[] );
 namespace StepMania
 {
 	void ApplyGraphicOptions();
-	void NORETURN HandleException( CString error );
 	void ResetGame();
 	void ChangeCurrentGame( const Game* g );