From d10c1b08adbc28dec1fc14bf49c1ae22ce9bffcd Mon Sep 17 00:00:00 2001
From: Glenn Maynard <gmaynard@users.sourceforge.net>
Date: Mon, 31 Oct 2005 01:26:24 +0000
Subject: [PATCH] Avoid calling GetSongsValidForRandom for static courses.

---
 stepmania/src/Course.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/stepmania/src/Course.cpp b/stepmania/src/Course.cpp
index e01ef01b9e..ca42895de8 100644
--- a/stepmania/src/Course.cpp
+++ b/stepmania/src/Course.cpp
@@ -563,7 +563,7 @@ bool Course::GetTrailUnsorted( StepsType st, CourseDifficulty cd, Trail &trail )
 	bool bCourseDifficultyIsSignificant = (cd == DIFFICULTY_MEDIUM);
 
 	vector<Song*> vpAllPossibleSongs;
-	GetSongsValidForRandom( vpAllPossibleSongs );
+	bool bHaveAllSongs = false; // true if vpAllPossibleSongs has been generated
 
 	// Resolve each entry to a Song and Steps.
 	FOREACH_CONST( CourseEntry, entries, e )
@@ -589,6 +589,13 @@ bool Course::GetTrailUnsorted( StepsType st, CourseDifficulty cd, Trail &trail )
 		}
 		else
 		{
+			/* Generate vpAllPossibleSongs, if we havn't yet. */
+			if( !bHaveAllSongs )
+			{
+				GetSongsValidForRandom( vpAllPossibleSongs );
+				bHaveAllSongs = true;
+			}
+
 			// copy over any songs that match our group filter, if one is set, and match our
 			// steps filter.
 			vector<Song*> vpPossibleSongs;