fixed fadeOutMusic in transitions

svn-id: r30465

1 files changed, 16 insertions, 0 deletions

diff --git a/engines/scumm/imuse_digi/dimuse_track.cpp b/engines/scumm/imuse_digi/dimuse_track.cpp
index b2037d83fc..e049b09427 100644
--- a/engines/scumm/imuse_digi/dimuse_track.cpp
+++ b/engines/scumm/imuse_digi/dimuse_track.cpp
@@ -280,6 +280,22 @@ void IMuseDigital::fadeOutMusic(int fadeDelay) {
 	}
 }
 
+void IMuseDigital::updateMusicFadeTrack(int fadeDelay) {
+	Common::StackLock lock(_mutex, "IMuseDigital::updateMusicFadeTrack()");
+	debug(5, "IMuseDigital::updateMusicFadeTrack");
+
+	for (int l = MAX_DIGITAL_TRACKS; l < MAX_DIGITAL_TRACKS + MAX_DIGITAL_FADETRACKS; l++) {
+		Track *track = _track[l];
+		if (track->used && !track->toBeRemoved && (track->volGroupId == IMUSE_VOLGRP_MUSIC)) {
+			track->volFadeDelay = fadeDelay;
+			track->volFadeDest = 0;
+			track->volFadeStep = (track->volFadeDest - track->vol) * 60 * (1000 / _callbackFps) / (1000 * fadeDelay);
+			track->volFadeUsed = true;
+		}
+	}
+}
+
+
 IMuseDigital::Track *IMuseDigital::cloneToFadeOutTrack(Track *track, int fadeDelay) {
 	assert(track);
 	Track *fadeTrack = 0;