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diff --git a/engines/mads/game_data.h b/engines/mads/game_data.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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef MADS_GAME_DATA_H
+#define MADS_GAME_DATA_H
+
+#include "common/scummsys.h"
+#include "common/array.h"
+#include "mads/resources.h"
+
+namespace MADS {
+
+class MADSEngine;
+class Game;
+
+class VisitedScenes : public SynchronizedList {
+public:
+	/**
+	 * Stores true when a previously visited scene is revisited
+	 */
+	bool _sceneRevisited;
+
+	/**
+	 * Returns true if a given Scene Id exists in the listed of previously visited scenes.
+	 */
+	bool exists(int sceneId);
+
+	/**
+	 * Adds a scene Id to the list of previously visited scenes, if it doesn't already exist
+	 */
+	void add(int sceneId);
+
+	/**
+	 * Synchronizes the list
+	 */
+	void synchronize(Common::Serializer &s, int sceneId);
+};
+
+class SectionHandler {
+protected:
+	MADSEngine *_vm;
+public:
+	SectionHandler(MADSEngine *vm) : _vm(vm) {}
+	virtual ~SectionHandler() {}
+
+	virtual void preLoadSection() = 0;
+	virtual void sectionPtr2() = 0;
+	virtual void postLoadSection() = 0;
+	virtual void step() {}
+};
+
+} // End of namespace MADS
+
+#endif /* MADS_GAME_DATA_H */