Initial commit

engines/pegasus/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 "engines/advancedDetector.h"
+#include "common/config-manager.h"
+#include "common/file.h"
+#include "common/savefile.h"
+
+#include "pegasus/pegasus.h"
+#include "pegasus/detection.h"
+
+namespace Pegasus {
+
+bool PegasusEngine::hasFeature(EngineFeature f) const {
+	return
+		(f == kSupportsReturnToLauncher)
+		|| (f == kSupportsLoadingDuringRuntime)
+		|| (f == kSupportsSavingDuringRuntime);
+}
+
+bool PegasusEngine::isDemo() const {
+	return (_gameDescription->desc.flags & ADGF_DEMO) != 0;
+}
+
+bool PegasusEngine::isDVD() const {
+	return (_gameDescription->desc.flags & ADGF_DVD) != 0;
+}
+
+bool PegasusEngine::isDVDDemo() const {
+	return isDemo() && isDVD();
+}
+
+bool PegasusEngine::isOldDemo() const {
+	return isDemo() && !isDVD();
+}
+
+bool PegasusEngine::isWindows() const {
+	return _gameDescription->desc.platform == Common::kPlatformWindows;
+}
+
+bool PegasusEngine::isLinux() const {
+	return _gameDescription->desc.platform == Common::kPlatformLinux;
+}
+
+} // End of namespace Pegasus
+
+class PegasusMetaEngine : public AdvancedMetaEngine<Pegasus::PegasusGameDescription> {
+public:
+	const char *getName() const override {
+		return "pegasus";
+	}
+
+	bool hasFeature(MetaEngineFeature f) const override;
+	Common::Error createInstance(OSystem *syst, Engine **engine, const Pegasus::PegasusGameDescription *desc) const override;
+
+	SaveStateList listSaves(const char *target) const override;
+	int getMaximumSaveSlot() const override { return 999; }
+	bool removeSaveState(const char *target, int slot) const override;
+	Common::KeymapArray initKeymaps(const char *target) const override;
+	Common::String getSavegameFile(int saveGameIdx, const char *target) const override {
+		if (saveGameIdx == kSavegameFilePattern)
+			return Common::String::format("pegasus-*.sav");
+		Common::StringArray fileNames = Pegasus::PegasusEngine::listSaveFiles();
+		if (saveGameIdx < (int)fileNames.size())
+			return fileNames[saveGameIdx];
+		if (fileNames.empty())
+			return Common::String("pegasus-1.sav");
+		Common::String name = fileNames.back();
+		name.insertString("_last", name.size() - 4);
+		return name;
+	}
+};
+
+bool PegasusMetaEngine::hasFeature(MetaEngineFeature f) const {
+	return
+		(f == kSupportsListSaves)
+		|| (f == kSupportsLoadingDuringStartup)
+		|| (f == kSupportsDeleteSave);
+}
+
+SaveStateList PegasusMetaEngine::listSaves(const char *target) const {
+	// The original had no pattern, so the user must rename theirs
+	// Note that we ignore the target because saves are compatible between
+	// all versions
+	Common::StringArray fileNames = Pegasus::PegasusEngine::listSaveFiles();
+
+	SaveStateList saveList;
+	for (uint32 i = 0; i < fileNames.size(); i++) {
+		// Isolate the description from the file name
+		Common::String desc = fileNames[i].c_str() + 8;
+		for (int j = 0; j < 4; j++)
+			desc.deleteLastChar();
+
+		saveList.push_back(SaveStateDescriptor(this, i, desc));
+	}
+
+	return saveList;
+}
+
+bool PegasusMetaEngine::removeSaveState(const char *target, int slot) const {
+	// See listSaves() for info on the pattern
+	Common::StringArray fileNames = Pegasus::PegasusEngine::listSaveFiles();
+	return g_system->getSavefileManager()->removeSavefile(fileNames[slot].c_str());
+}
+
+Common::KeymapArray PegasusMetaEngine::initKeymaps(const char *target) const {
+	return Pegasus::PegasusEngine::initKeymaps();
+}
+
+Common::Error PegasusMetaEngine::createInstance(OSystem *syst, Engine **engine, const Pegasus::PegasusGameDescription *desc) const {
+	*engine = new Pegasus::PegasusEngine(syst,desc);
+	return Common::kNoError;
+}
+
+#if PLUGIN_ENABLED_DYNAMIC(PEGASUS)
+	REGISTER_PLUGIN_DYNAMIC(PEGASUS, PLUGIN_TYPE_ENGINE, PegasusMetaEngine);
+#else
+	REGISTER_PLUGIN_STATIC(PEGASUS, PLUGIN_TYPE_ENGINE, PegasusMetaEngine);
+#endif