SCI: Sync in-game speech/subtitle options with the ones from the ScummVM GUI.

- Obtain speech/subtitle options from the ScummVM GUI and set them in CD games.
- Also, set simultaneous speech and subtitles in games that support them
(currently SQ4 CD and Freddy Pharkas CD). There is no GUI option for setting
simultaneous speech and subtitles in Freddy Pharkas CD, so this is the only
current way of achieving this (unless the text speed slider inside the Freddy
Pharkas options window is repurposed - but that will require extensive changes)

svn-id: r55005

3 files changed, 43 insertions, 1 deletions

diff --git a/engines/sci/engine/vm.cpp b/engines/sci/engine/vm.cpp
index 8398b7d8c2..958fcdf34f 100644
--- a/engines/sci/engine/vm.cpp
+++ b/engines/sci/engine/vm.cpp
@@ -286,6 +286,13 @@ static void validate_write_var(reg_t *r, reg_t *stack_base, int type, int max, i
 			value.segment = 0;
 
 		r[index] = value;
+
+		// If the game is trying to change its speech/subtitle settings, apply the ScummVM audio
+		// options first, if they haven't been applied yet
+		if (type == VAR_GLOBAL && index == 90 && !g_sci->getEngineState()->_syncedAudioOptions) {
+			g_sci->syncIngameAudioOptions();
+			g_sci->getEngineState()->_syncedAudioOptions = true;
+		}
 	}
 }
 
diff --git a/engines/sci/sci.cpp b/engines/sci/sci.cpp
index 43422b4ede..3e96ecc8f2 100644
--- a/engines/sci/sci.cpp
+++ b/engines/sci/sci.cpp
@@ -252,6 +252,7 @@ Common::Error SciEngine::run() {
 	_soundCmd = new SoundCommandParser(_resMan, segMan, _kernel, _audio, _features->detectDoSoundType());
 
 	syncSoundSettings();
+	syncIngameAudioOptions();
 
 	// Initialize all graphics related subsystems
 	initGraphics();
@@ -662,11 +663,15 @@ void SciEngine::runGame() {
 	if (DebugMan.isDebugChannelEnabled(kDebugLevelOnStartup))
 		_console->attach();
 
+	g_sci->getEngineState()->_syncedAudioOptions = false;
+
 	do {
 		_gamestate->_executionStackPosChanged = false;
 		run_vm(_gamestate);
 		exitGame();
 
+		g_sci->getEngineState()->_syncedAudioOptions = true;
+
 		if (_gamestate->abortScriptProcessing == kAbortRestartGame) {
 			_gamestate->_segMan->resetSegMan();
 			initGame();
@@ -683,6 +688,9 @@ void SciEngine::runGame() {
 			patchGameSaveRestore(_gamestate->_segMan);
 			_gamestate->shrinkStackToBase();
 			_gamestate->abortScriptProcessing = kAbortNone;
+
+			syncSoundSettings();
+			syncIngameAudioOptions();
 		} else {
 			break;	// exit loop
 		}
@@ -807,4 +815,31 @@ void SciEngine::syncSoundSettings() {
 	}
 }
 
+void SciEngine::syncIngameAudioOptions() {
+	// Now, sync the in-game speech/subtitles settings for CD games
+	if (isCD()) {
+		bool subtitlesOn = ConfMan.getBool("subtitles");
+		bool speechOn = !ConfMan.getBool("speech_mute");
+
+		if (subtitlesOn && !speechOn) {
+			_gamestate->variables[VAR_GLOBAL][90] = make_reg(0, 1);	// subtitles
+		} else if (!subtitlesOn && speechOn) {
+			_gamestate->variables[VAR_GLOBAL][90] = make_reg(0, 2);	// speech
+		} else if (subtitlesOn && speechOn) {
+			// Is it a game that supports simultaneous speech and subtitles?
+			if (getGameId() == GID_SQ4 
+				|| getGameId() == GID_FREDDYPHARKAS
+				// TODO: The following need script patches for simultaneous speech and subtitles
+				//|| getGameId() == GID_KQ6
+				//|| getGameId() == GID_LB2
+				) {
+				_gamestate->variables[VAR_GLOBAL][90] = make_reg(0, 3);	// speech + subtitles
+			} else {
+				// Game does not support speech and subtitles, set it to speech
+				_gamestate->variables[VAR_GLOBAL][90] = make_reg(0, 2);	// speech
+			}
+		}
+	}
+}
+
 } // End of namespace Sci
diff --git a/engines/sci/sci.h b/engines/sci/sci.h
index 716419d103..91ab491945 100644
--- a/engines/sci/sci.h
+++ b/engines/sci/sci.h
@@ -206,7 +206,6 @@ enum kLanguage {
 	K_LANG_PORTUGUESE = 351
 };
 
-
 class SciEngine : public Engine {
 	friend class Console;
 public:
@@ -224,6 +223,7 @@ public:
 	bool canLoadGameStateCurrently();
 	bool canSaveGameStateCurrently();
 	void syncSoundSettings();
+	void syncIngameAudioOptions();
 
 	const SciGameId &getGameId() const { return _gameId; }
 	const char *getGameIdStr() const;