1 files changed, 44 insertions, 0 deletions
diff --git a/ksokoban/MapDelta.h b/ksokoban/MapDelta.h
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+++ b/ksokoban/MapDelta.h
@@ -0,0 +1,44 @@
+/*
+ *  ksokoban - a Sokoban game for KDE
+ *  Copyright (C) 1998  Anders Widell  <d95-awi@nada.kth.se>
+ *
+ *  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 MAPDELTA_H
+#define MAPDELTA_H
+
+#include <assert.h>
+
+#include "Map.h"
+
+class MapDelta : private Map {
+public:
+  MapDelta (Map *m);
+
+  void start ();
+  void end ();
+
+  bool hasChanged (int x, int y) {
+    assert (ended_);
+    return map (x, y) == 1;
+  }
+
+private:
+  Map      *source_;
+  bool      ended_;
+};
+
+#endif  /* MAPDELTA_H */