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/**
* $Id$
*
* ***** BEGIN GPL 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.
*
* 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 LICENSE BLOCK *****
*/
#ifndef __KX_IACTUATOR
#define __KX_IACTUATOR
#include "SCA_ILogicBrick.h"
#include <vector>
class SCA_IActuator : public SCA_ILogicBrick
{
friend class SCA_LogicManager;
protected:
int m_links; // number of active links to controllers
// when 0, the actuator is automatically stopped
std::vector<CValue*> m_events;
void RemoveAllEvents();
public:
/**
* This class also inherits the default copy constructors
*/
SCA_IActuator(SCA_IObject* gameobj,
PyTypeObject* T =&Type);
/**
* UnlinkObject(...)
* Certain actuator use gameobject pointers (like TractTo actuator)
* This function can be called when an object is removed to make
* sure that the actuator will not use it anymore.
*/
virtual bool UnlinkObject(SCA_IObject* clientobj) { return false; }
/**
* 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, bool frame);
virtual bool Update();
/**
* 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();
void ClrLink() { m_links=0; }
void IncLink() { m_links++; }
void DecLink();
bool IsNoLink() const { return !m_links; }
};
#endif //__KX_IACTUATOR
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