Initial commit

engines/kingdom/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 "base/plugins.h"
+
+#include "common/savefile.h"
+#include "engines/advancedDetector.h"
+#include "common/file.h"
+
+#include "kingdom/kingdom.h"
+
+#define MAX_SAVES 99
+
+namespace Kingdom {
+
+const char *KingdomGame::getGameId() const { return _gameDescription->gameId; }
+Common::Platform KingdomGame::getPlatform() const { return _gameDescription->platform; }
+
+} // End of namespace Kingdom
+
+
+class KingdomMetaEngine : public AdvancedMetaEngine<ADGameDescription> {
+public:
+	const char *getName() const override {
+		return "kingdom";
+	}
+
+	bool hasFeature(MetaEngineFeature f) const override;
+	Common::Error createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const override;
+
+	int getMaximumSaveSlot() const override;
+	SaveStateList listSaves(const char *target) const override;
+	bool removeSaveState(const char *target, int slot) const override;
+	SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const override;
+};
+
+bool KingdomMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+	    (f == kSupportsListSaves) ||
+	    (f == kSupportsLoadingDuringStartup) ||
+	    (f == kSupportsDeleteSave) ||
+	    (f == kSavesSupportMetaInfo) ||
+	    (f == kSavesSupportThumbnail) ||
+	    (f == kSimpleSavesNames) ||
+	    (f == kSavesSupportCreationDate);
+}
+
+Common::Error KingdomMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
+	*engine = new Kingdom::KingdomGame(syst, desc);
+	return Common::kNoError;
+}
+
+int KingdomMetaEngine::getMaximumSaveSlot() const {
+	return MAX_SAVES;
+}
+
+SaveStateList KingdomMetaEngine::listSaves(const char *target) const {
+	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
+	Common::String saveDesc;
+	Common::String pattern = Common::String::format("%s.0##", target);
+	Common::StringArray filenames = saveFileMan->listSavefiles(pattern);
+
+	Kingdom::KingdomSavegameHeader header;
+
+	SaveStateList saveList;
+	for (const auto &filename : filenames) {
+		const char *ext = strrchr(filename.c_str(), '.');
+		int slot = ext ? atoi(ext + 1) : -1;
+
+		if (slot >= 0 && slot < MAX_SAVES) {
+			Common::InSaveFile *in = g_system->getSavefileManager()->openForLoading(filename);
+
+			if (in) {
+				if (Kingdom::KingdomGame::readSavegameHeader(in, header)) {
+					saveList.push_back(SaveStateDescriptor(this, slot, header._saveName));
+
+					header._thumbnail->free();
+					delete header._thumbnail;
+				}
+
+				delete in;
+			}
+		}
+	}
+
+	// Sort saves based on slot number.
+	Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
+	return saveList;
+}
+
+bool KingdomMetaEngine::removeSaveState(const char *target, int slot) const {
+	Common::String filename = Common::String::format("%s.%03d", target, slot);
+	return g_system->getSavefileManager()->removeSavefile(filename);
+}
+
+SaveStateDescriptor KingdomMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
+	Common::String filename = Common::String::format("%s.%03d", target, slot);
+	Common::InSaveFile *f = g_system->getSavefileManager()->openForLoading(filename);
+
+	if (f) {
+		Kingdom::KingdomSavegameHeader header;
+		Kingdom::KingdomGame::readSavegameHeader(f, header);
+		delete f;
+
+		// Create the return descriptor
+		SaveStateDescriptor desc(this, slot, header._saveName);
+		desc.setThumbnail(header._thumbnail);
+		desc.setSaveDate(header._year, header._month, header._day);
+		desc.setSaveTime(header._hour, header._minute);
+
+		return desc;
+	}
+
+	return SaveStateDescriptor();
+}
+
+#if PLUGIN_ENABLED_DYNAMIC(KINGDOM)
+	REGISTER_PLUGIN_DYNAMIC(KINGDOM, PLUGIN_TYPE_ENGINE, KingdomMetaEngine);
+#else
+	REGISTER_PLUGIN_STATIC(KINGDOM, PLUGIN_TYPE_ENGINE, KingdomMetaEngine);
+#endif