Implement scummvm.ini flag features for AGI engine

svn-id: r41252

3 files changed, 60 insertions, 2 deletions

diff --git a/engines/agi/agi.cpp b/engines/agi/agi.cpp
index dc4764ba23..26e51f334f 100644
--- a/engines/agi/agi.cpp
+++ b/engines/agi/agi.cpp
@@ -627,6 +627,8 @@ AgiButtonStyle::AgiButtonStyle(Common::RenderMode renderMode) {
 
 AgiBase::AgiBase(OSystem *syst, const AGIGameDescription *gameDesc) : Engine(syst), _gameDescription(gameDesc) {
 	_noSaveLoadAllowed = false;
+
+	initFeatures();
 }
 
 AgiEngine::AgiEngine(OSystem *syst, const AGIGameDescription *gameDesc) : AgiBase(syst, gameDesc) {
@@ -642,6 +644,8 @@ AgiEngine::AgiEngine(OSystem *syst, const AGIGameDescription *gameDesc) : AgiBas
 		if (!scumm_stricmp(g->gameid, gameid))
 			_gameId = g->id;
 
+	parseFeatures();
+
 	_rnd = new Common::RandomSource();
 	syst->getEventManager()->registerRandomSource(*_rnd, "agi");
 
@@ -838,4 +842,45 @@ void AgiEngine::syncSoundSettings() {
 	_mixer->setVolumeForSoundType(Audio::Mixer::kSpeechSoundType, soundVolumeSpeech);
 }
 
+void AgiEngine::parseFeatures(void) {
+	if (!ConfMan.hasKey("features"))
+		return;
+
+	char *features = strdup(ConfMan.get("features").c_str());
+	const char *feature[100];
+	int numFeatures = 0;
+
+	char *tok = strtok(features, " ");
+	if (tok) {
+		do {
+			feature[numFeatures++] = tok;
+		} while ((tok = strtok(NULL, " ")) != NULL);
+	} else {
+		feature[numFeatures++] = features;
+	}
+
+	const struct Flags {
+		const char *name;
+		uint32 flag;
+	} flags[] = {
+		{ "agimouse", GF_AGIMOUSE },
+		{ "agds", GF_AGDS },
+		{ "agi256", GF_AGI256 },
+		{ "agi256-2", GF_AGI256_2 },
+		{ "agipal", GF_AGIPAL },
+		{ 0, 0 }
+	};
+
+	for (int i = 0; i < numFeatures; i++) {
+		for (const Flags *flag = flags; flag->name; flag++) {
+			if (!scumm_stricmp(feature[i], flag->name)) {
+				debug(0, "Added feature: %s", flag->name);
+
+				setFeature(flag->flag);
+				break;
+			}
+		}
+	}
+}
+
 } // End of namespace Agi
diff --git a/engines/agi/agi.h b/engines/agi/agi.h
index 255733ede8..962c75431e 100644
--- a/engines/agi/agi.h
+++ b/engines/agi/agi.h
@@ -750,6 +750,9 @@ public:
 	void flipflag(int);
 
 	const AGIGameDescription *_gameDescription;
+
+	uint32 _gameFeatures;
+
 	uint32 getGameID() const;
 	uint32 getFeatures() const;
 	uint16 getVersion() const;
@@ -757,6 +760,8 @@ public:
 	Common::Language getLanguage() const;
 	Common::Platform getPlatform() const;
 	const char *getGameMD5() const;
+	void initFeatures(void);
+	void setFeature(uint32 feature);
 
 	Common::Error loadGameState(int slot);
 	Common::Error saveGameState(int slot, const char *desc);
@@ -796,7 +801,7 @@ private:
 	int checkCollision(VtEntry *v);
 	int checkPosition(VtEntry *v);
 
-	uint32 matchVersion(uint32 crc);
+	void parseFeatures(void);
 
 	int _firstSlot;
 
diff --git a/engines/agi/detection.cpp b/engines/agi/detection.cpp
index 63557712b0..b730b825f6 100644
--- a/engines/agi/detection.cpp
+++ b/engines/agi/detection.cpp
@@ -51,7 +51,7 @@ uint32 AgiBase::getGameID() const {
 }
 
 uint32 AgiBase::getFeatures() const {
-	return _gameDescription->features;
+	return _gameFeatures;
 }
 
 Common::Platform AgiBase::getPlatform() const {
@@ -74,6 +74,14 @@ const char *AgiBase::getGameMD5() const {
 	return _gameDescription->desc.filesDescriptions[0].md5;
 }
 
+void AgiBase::initFeatures(void) {
+	_gameFeatures = _gameDescription->features;
+}
+
+void AgiBase::setFeature(uint32 feature) {
+	_gameFeatures |= feature;
+}
+
 }
 
 static const PlainGameDescriptor agiGames[] = {