T7G: Fix bug #2831041 by implementing opcode responsible for starting music partway through a video

svn-id: r43068

1 files changed, 13 insertions, 1 deletions

diff --git a/engines/groovie/music.cpp b/engines/groovie/music.cpp
index 1a1de92156..797290a6f3 100644
--- a/engines/groovie/music.cpp
+++ b/engines/groovie/music.cpp
@@ -35,7 +35,7 @@ namespace Groovie {
 
 MusicPlayer::MusicPlayer(GroovieEngine *vm) :
 	_vm(vm), _isPlaying(false), _backgroundFileRef(0), _gameVolume(100),
-	_prevCDtrack(0) {
+	_prevCDtrack(0), _backgroundDelay(0) {
 }
 
 void MusicPlayer::playSong(uint32 fileref) {
@@ -56,6 +56,18 @@ void MusicPlayer::setBackgroundSong(uint32 fileref) {
 	_backgroundFileRef = fileref;
 }
 
+void MusicPlayer::frameTick() {
+	if (_backgroundDelay > 0) {
+		_backgroundDelay--;
+		if (_backgroundDelay == 0)
+			playSong(_backgroundFileRef);
+	}
+}
+
+void MusicPlayer::setBackgroundDelay(uint16 delay) {
+	_backgroundDelay = delay;
+}
+
 void MusicPlayer::playCD(uint8 track) {
 	int startms = 0;