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diff --git a/gui/animation/Animation.h b/gui/animation/Animation.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.
+ *
+ */
+
+// Based on code by omergilad.
+
+#ifndef GUI_ANIMATION_ANIMATION_H
+#define GUI_ANIMATION_ANIMATION_H
+
+#include "gui/animation/Interpolator.h"
+
+namespace GUI {
+
+class Drawable;
+
+class Animation {
+public:
+	Animation();
+	virtual ~Animation() = 0;
+
+	virtual void update(Drawable *drawable, long currentTime);
+
+	/**
+	 * Set start time in millis
+	 */
+	virtual void start(long currentTime);
+
+	/**
+	 * Set duration in millis
+	 */
+	virtual void setDuration(long duration);
+
+	virtual bool isFinished() const;
+
+	bool isFinishOnEnd() const;
+
+	void setFinishOnEnd(bool finishOnEnd);
+
+	InterpolatorPtr getInterpolator() const;
+	void setInterpolator(InterpolatorPtr interpolator);
+
+protected:
+	void finishAnimation();
+
+	virtual void updateInternal(Drawable *drawable, float interpolation);
+
+	long _startTime;
+	long _duration;
+	bool _finished;
+	bool _finishOnEnd;
+	InterpolatorPtr _interpolator;
+};
+
+typedef Common::SharedPtr<Animation> AnimationPtr;
+
+} // End of namespace GUI
+
+#endif /* GUI_ANIMATION_ANIMATION_H */