From 40566820a71adb63d34a7831c85efacc430f3481 Mon Sep 17 00:00:00 2001
From: Colin Snover
Date: Fri, 9 Jun 2017 21:42:15 -0500
Subject: SCI: Return the original master sound volume when mute is on

---
 engines/sci/sound/music.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'engines/sci')

diff --git a/engines/sci/sound/music.cpp b/engines/sci/sound/music.cpp
index ca5644d90b..987983a7f9 100644
--- a/engines/sci/sound/music.cpp
+++ b/engines/sci/sound/music.cpp
@@ -739,6 +739,14 @@ void SciMusic::soundToggle(MusicEntry *pSnd, bool pause) {
 }
 
 uint16 SciMusic::soundGetMasterVolume() {
+	if (ConfMan.getBool("mute")) {
+		// When a game is muted, the master volume is set to zero so that
+		// mute applies to external MIDI devices, but this should not be
+		// communicated to the game as it will cause the UI to be drawn with
+		// the wrong (zero) volume for music
+		return (ConfMan.getInt("music_volume") + 1) * MUSIC_MASTERVOLUME_MAX / Audio::Mixer::kMaxMixerVolume;
+	}
+
 	return _masterVolume;
 }
 
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