Initial commit

engines/mutationofjb/metaengine.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mutationofjb/mutationofjb.h"
+
+#include "common/config-manager.h"
+#include "common/system.h"
+#include "common/savefile.h"
+#include "common/serializer.h"
+
+#include "engines/advancedDetector.h"
+
+class MutationOfJBMetaEngine : public AdvancedMetaEngine<ADGameDescription> {
+public:
+	const char *getName() const override {
+		return "mutationofjb";
+	}
+
+	Common::Error createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const override {
+		*engine = new MutationOfJB::MutationOfJBEngine(syst, desc);
+		return Common::kNoError;
+	}
+
+	bool hasFeature(MetaEngineFeature f) const override {
+		if (f == kSupportsListSaves || f == kSimpleSavesNames || f == kSupportsLoadingDuringStartup) {
+			return true;
+		}
+
+		return false;
+	}
+
+	int getMaximumSaveSlot() const override {
+		return 999;
+	}
+
+	SaveStateList listSaves(const char *target) const override {
+		Common::SaveFileManager *const saveFileMan = g_system->getSavefileManager();
+		Common::StringArray filenames;
+		Common::String pattern = target;
+		pattern += ".###";
+
+		filenames = saveFileMan->listSavefiles(pattern);
+
+		SaveStateList saveList;
+		int slotNo = 0;
+		for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
+			// Obtain the last 3 digits of the filename, since they correspond to the save slot
+			slotNo = atoi(file->c_str() + file->size() - 3);
+
+			Common::InSaveFile *const in = saveFileMan->openForLoading(*file);
+			if (in) {
+				Common::Serializer sz(in, nullptr);
+
+				MutationOfJB::SaveHeader saveHdr;
+				if (saveHdr.sync(sz)) {
+					saveList.push_back(SaveStateDescriptor(this, slotNo, saveHdr._description));
+				}
+			}
+		}
+		return saveList;
+	}
+};
+
+#if PLUGIN_ENABLED_DYNAMIC(MUTATIONOFJB)
+	REGISTER_PLUGIN_DYNAMIC(MUTATIONOFJB, PLUGIN_TYPE_ENGINE, MutationOfJBMetaEngine);
+#else
+	REGISTER_PLUGIN_STATIC(MUTATIONOFJB, PLUGIN_TYPE_ENGINE, MutationOfJBMetaEngine);
+#endif