1 files changed, 66 insertions, 0 deletions
diff --git a/engines/mads/game_data.cpp b/engines/mads/game_data.cpp
new file mode 100644
index 0000000000..70e9e6c30b
--- /dev/null
+++ b/engines/mads/game_data.cpp
@@ -0,0 +1,66 @@
+/* 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.
+ *
+ */
+
+#include "common/scummsys.h"
+#include "mads/mads.h"
+#include "mads/game.h"
+#include "mads/nebular/game_nebular.h"
+#include "mads/screen.h"
+#include "mads/msurface.h"
+#include "mads/resources.h"
+
+namespace MADS {
+
+void VisitedScenes::add(int sceneId) {
+	_sceneRevisited = exists(sceneId);
+
+	if (!_sceneRevisited)
+		push_back(sceneId);
+}
+
+bool VisitedScenes::exists(int sceneId) {
+	for (uint i = 0; i < size(); ++i) {
+		if ((*this)[i] == sceneId)
+			return true;
+	}
+
+	return false;
+}
+
+void VisitedScenes::synchronize(Common::Serializer &s, int sceneId) {
+	SynchronizedList::synchronize(s);
+	s.syncAsByte(_sceneRevisited);
+
+	// If the scene hasn't been visited yet, remove it from the visited
+	// scenes list. It'll be readded to the list in add() above, from
+	// Game::sectionLoop()
+	if (s.isLoading() && !_sceneRevisited) {
+		for (uint i = 0; i < size(); ++i) {
+			if ((*this)[i] == sceneId) {
+				remove_at(i);
+				return;
+			}
+		}
+	}
+}
+
+} // End of namespace MADS