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diff --git a/source/gameengine/GameLogic/SCA_IActuator.h b/source/gameengine/GameLogic/SCA_IActuator.h
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+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+#ifndef __KX_IACTUATOR
+#define __KX_IACTUATOR
+
+#include "SCA_ILogicBrick.h"
+#include <vector>
+
+class SCA_IActuator : public SCA_ILogicBrick
+{
+protected:
+	std::vector<CValue*> m_events;
+	void RemoveAllEvents();
+
+public:
+	/**
+	 * This class also inherits the default copy constructors
+	 */
+
+	SCA_IActuator(SCA_IObject* gameobj,
+				  PyTypeObject* T =&Type); 
+
+	/**
+	 * Update(...)
+	 * Update the actuator based upon the events received since 
+	 * the last call to Update, the current time and deltatime the
+	 * time elapsed in this frame ?
+	 * It is the responsibility of concrete Actuators to clear
+	 * their event's. This is usually done in the Update() method via 
+	 * a call to RemoveAllEvents()
+	 */
+
+
+	virtual bool Update(double curtime,
+						double deltatime);
+
+	/** 
+	 * Add an event to an actuator.
+	 */ 
+	void AddEvent(CValue* event);
+	virtual void ProcessReplica();
+
+	/** 
+	 * Return true iff all the current events 
+	 * are negative. The definition of negative event is
+	 * not immediately clear. But usually refers to key-up events
+	 * or events where no action is required.
+	 */
+	bool IsNegativeEvent() const;
+	virtual ~SCA_IActuator();
+};
+#endif //__KX_IACTUATOR