Defined some MetaEngineFeatures for the engines, the launcher uses these features to allow/disallow loading and deleting saves

svn-id: r33909

13 files changed, 100 insertions, 14 deletions

diff --git a/engines/agi/detection.cpp b/engines/agi/detection.cpp
index 8ddeae1b17..5427879f20 100644
--- a/engines/agi/detection.cpp
+++ b/engines/agi/detection.cpp
@@ -2122,11 +2122,21 @@ public:
 		return "Sierra AGI Engine (C) Sierra On-Line Software";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
+	
 	const Common::ADGameDescription *fallbackDetect(const FSList *fslist) const;
 };
 
+bool AgiMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
+
 bool AgiMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const Agi::AGIGameDescription *gd = (const Agi::AGIGameDescription *)desc;
 	bool res = true;
diff --git a/engines/cine/detection.cpp b/engines/cine/detection.cpp
index 1dc6f89c49..28a8404d28 100644
--- a/engines/cine/detection.cpp
+++ b/engines/cine/detection.cpp
@@ -533,9 +533,16 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool CineMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad);
+}
+
 bool CineMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const Cine::CINEGameDescription *gd = (const Cine::CINEGameDescription *)desc;
 	if (gd) {
diff --git a/engines/kyra/detection.cpp b/engines/kyra/detection.cpp
index f8aa44be63..5ed556cc27 100644
--- a/engines/kyra/detection.cpp
+++ b/engines/kyra/detection.cpp
@@ -931,11 +931,18 @@ public:
 		return "The Legend of Kyrandia (C) Westwood Studios";
 	}
 
-	bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
-
-	SaveStateList listSaves(const char *target) const;
+	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
+	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool KyraMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 bool KyraMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const KYRAGameDescription *gd = (const KYRAGameDescription *)desc;
 	bool res = true;
diff --git a/engines/lure/detection.cpp b/engines/lure/detection.cpp
index 8ed2e62760..dc23e4ad89 100644
--- a/engines/lure/detection.cpp
+++ b/engines/lure/detection.cpp
@@ -185,10 +185,18 @@ public:
 		return "Lure of the Temptress (C) Revolution";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool LureMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 bool LureMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const Lure::LureGameDescription *gd = (const Lure::LureGameDescription *)desc;
 	if (gd) {
diff --git a/engines/metaengine.h b/engines/metaengine.h
index 0d8a4a15c9..15024ff661 100644
--- a/engines/metaengine.h
+++ b/engines/metaengine.h
@@ -126,7 +126,7 @@ public:
 	/**
 	 * Determine whether the engine supports the specified feature
 	 */	
-	virtual bool hasFeature(MetaEngineFeature f) { return false; };
+	virtual bool hasFeature(MetaEngineFeature f) const { return false; };
 
 	//@}
 };
diff --git a/engines/parallaction/detection.cpp b/engines/parallaction/detection.cpp
index 531bd8ee16..a65fc05b95 100644
--- a/engines/parallaction/detection.cpp
+++ b/engines/parallaction/detection.cpp
@@ -243,10 +243,18 @@ public:
 		return "Nippon Safes Inc. (C) Dynabyte";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool ParallactionMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 bool ParallactionMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const Parallaction::PARALLACTIONGameDescription *gd = (const Parallaction::PARALLACTIONGameDescription *)desc;
 	bool res = true;
diff --git a/engines/queen/queen.cpp b/engines/queen/queen.cpp
index 593597ce12..801a1c630a 100644
--- a/engines/queen/queen.cpp
+++ b/engines/queen/queen.cpp
@@ -60,6 +60,7 @@ public:
 	virtual const char *getName() const;
 	virtual const char *getCopyright() const;
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual GameList getSupportedGames() const;
 	virtual GameDescriptor findGame(const char *gameid) const;
 	virtual GameList detectGames(const FSList &fslist) const;
@@ -76,6 +77,13 @@ const char *QueenMetaEngine::getCopyright() const {
 	return "Flight of the Amazon Queen (C) John Passfield and Steve Stamatiadis";
 }
 
+bool QueenMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 GameList QueenMetaEngine::getSupportedGames() const {
 	GameList games;
 	games.push_back(queenGameDescriptor);
diff --git a/engines/saga/detection.cpp b/engines/saga/detection.cpp
index 3ed3882b06..16ac3d7fb4 100644
--- a/engines/saga/detection.cpp
+++ b/engines/saga/detection.cpp
@@ -147,10 +147,18 @@ public:
 		return "Inherit the Earth (C) Wyrmkeep Entertainment";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool SagaMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 bool SagaMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const Saga::SAGAGameDescription *gd = (const Saga::SAGAGameDescription *)desc;
 	if (gd) {
diff --git a/engines/scumm/detection.cpp b/engines/scumm/detection.cpp
index 716a456c90..8d93b04a14 100644
--- a/engines/scumm/detection.cpp
+++ b/engines/scumm/detection.cpp
@@ -674,16 +674,23 @@ public:
 	virtual const char *getName() const;
 	virtual const char *getCopyright() const;
 
+	virtual bool hasFeature(MetaEngineFeature f) const;	
 	virtual GameList getSupportedGames() const;
 	virtual GameDescriptor findGame(const char *gameid) const;
 	virtual GameList detectGames(const FSList &fslist) const;
-	virtual bool hasFeature(MetaEngineFeature f);
-
+	
 	virtual PluginError createInstance(OSystem *syst, Engine **engine) const;
 
 	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool ScummMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 GameList ScummMetaEngine::getSupportedGames() const {
 	return GameList(gameDescriptions);
 }
@@ -692,13 +699,6 @@ GameDescriptor ScummMetaEngine::findGame(const char *gameid) const {
 	return Common::AdvancedDetector::findGameID(gameid, gameDescriptions, obsoleteGameIDsTable);
 }
 
-bool ScummMetaEngine::hasFeature(MetaEngineFeature f) {
-	return
-		(f == kSupportsListSaves) ||
-		(f == kSupportsDirectLoad) ||
-		(f == kSupportsDeleteSave);
-}
-
 GameList ScummMetaEngine::detectGames(const FSList &fslist) const {
 	GameList detectedGames;
 	Common::List<DetectorResult> results;
diff --git a/engines/sky/sky.cpp b/engines/sky/sky.cpp
index bcdc9f5130..88f7f93d75 100644
--- a/engines/sky/sky.cpp
+++ b/engines/sky/sky.cpp
@@ -110,9 +110,10 @@ public:
 	virtual const char *getName() const;
 	virtual const char *getCopyright() const;
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual GameList getSupportedGames() const;
 	virtual GameDescriptor findGame(const char *gameid) const;
-	virtual GameList detectGames(const FSList &fslist) const;
+	virtual GameList detectGames(const FSList &fslist) const;	
 
 	virtual PluginError createInstance(OSystem *syst, Engine **engine) const;
 
@@ -127,6 +128,12 @@ const char *SkyMetaEngine::getCopyright() const {
 	return "Beneath a Steel Sky (C) Revolution";
 }
 
+bool SkyMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad);
+}
+
 GameList SkyMetaEngine::getSupportedGames() const {
 	GameList games;
 	games.push_back(skySetting);
diff --git a/engines/sword1/sword1.cpp b/engines/sword1/sword1.cpp
index 8bfb5d8698..de346a42dc 100644
--- a/engines/sword1/sword1.cpp
+++ b/engines/sword1/sword1.cpp
@@ -95,6 +95,7 @@ public:
 		return "Broken Sword Games (C) Revolution";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual GameList getSupportedGames() const;
 	virtual GameDescriptor findGame(const char *gameid) const;
 	virtual GameList detectGames(const FSList &fslist) const;
@@ -103,6 +104,12 @@ public:
 	virtual PluginError createInstance(OSystem *syst, Engine **engine) const;
 };
 
+bool SwordMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad);
+}
+
 GameList SwordMetaEngine::getSupportedGames() const {
 	GameList games;
 	games.push_back(sword1FullSettings);
diff --git a/engines/sword2/sword2.cpp b/engines/sword2/sword2.cpp
index 3b6f51050b..110d881c1d 100644
--- a/engines/sword2/sword2.cpp
+++ b/engines/sword2/sword2.cpp
@@ -80,6 +80,7 @@ public:
 		return "Broken Sword Games (C) Revolution";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual GameList getSupportedGames() const;
 	virtual GameDescriptor findGame(const char *gameid) const;
 	virtual GameList detectGames(const FSList &fslist) const;
@@ -88,6 +89,13 @@ public:
 	virtual PluginError createInstance(OSystem *syst, Engine **engine) const;
 };
 
+bool Sword2MetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 GameList Sword2MetaEngine::getSupportedGames() const {
 	const Sword2::GameSettings *g = Sword2::sword2_settings;
 	GameList games;
diff --git a/engines/touche/detection.cpp b/engines/touche/detection.cpp
index 63d2a3a078..c4c428ba8d 100644
--- a/engines/touche/detection.cpp
+++ b/engines/touche/detection.cpp
@@ -136,10 +136,18 @@ public:
 		return "Touche: The Adventures of the 5th Musketeer (C) Clipper Software";
 	}
 
+	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 };
 
+bool ToucheMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves) ||
+		(f == kSupportsDirectLoad) ||
+		(f == kSupportsDeleteSave);
+}
+
 bool ToucheMetaEngine::createInstance(OSystem *syst, Engine **engine, const Common::ADGameDescription *desc) const {
 	const Common::ADGameDescription *gd = desc;
 	if (gd) {