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engines/m4/metaengine.h

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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/>.
+ *
+ */
+
+#ifndef M4_METAENGINE_H
+#define M4_METAENGINE_H
+
+#include "graphics/surface.h"
+#include "engines/advancedDetector.h"
+
+#include "engines/m4/detection.h"
+
+class M4MetaEngine : public AdvancedMetaEngine<M4::M4GameDescription> {
+private:
+	Common::InSaveFile *getOriginalSave(const Common::String &saveName) const;
+
+public:
+	Graphics::Surface *_thumbnail = nullptr;
+
+public:
+	~M4MetaEngine() override {}
+
+	const char *getName() const override;
+
+	Common::Error createInstance(OSystem *syst, Engine **engine, const M4::M4GameDescription *desc) const override;
+
+	/**
+	 * Determine whether the engine supports the specified MetaEngine feature.
+	 *
+	 * Used by e.g. the launcher to determine whether to enable the Load button.
+	 */
+	bool hasFeature(MetaEngineFeature f) const override;
+
+	const ADExtraGuiOptionsMap *getAdvancedExtraGuiOptions() const override;
+
+	SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const override;
+
+	/**
+	 * Convert the current screen contents to a thumbnail. Can be overriden by individual
+	 * engine meta engines to provide their own thumb, such as hiding any on-screen save
+	 * dialog so that it won't appear in the thumbnail.
+	 */
+	void getSavegameThumbnail(Graphics::Surface &thumb) override;
+};
+
+#endif // M4_METAENGINE_H