CTransformChangeDetector.h

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//    Copyright (C) 2006-2013 Dylan Blair
//
//    email: dblair@alumni.cs.utexas.edu
//
//    This library is free software; you can redistribute it and/or
//    modify it under the terms of the GNU Lesser General Public
//    License as published by the Free Software Foundation; either
//    version 2.1 of the License, or (at your option) any later version.
//
//    This library 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
//    Lesser General Public License for more details.
//
//    You should have received a copy of the GNU Lesser General Public
//    License along with this library; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef CTRANSFORM_CHANGE_DETECTOR_H
#define CTRANSFORM_CHANGE_DETECTOR_H

#include "ITransformChangeListener.h"
#include "CUpdater.h"

namespace OpenSkyNet {
    namespace Core {
        class CORE_DLL TransformChangeDetector : public Updater {
            std::map<Object*, std::list<TransformChangeListener*> > _objToListeners;
        protected:
            virtual bool addObject(Object* obj_, Updater::OBJECT_PRIORITY prio_=OBJ_1, bool isOneShot_=false);
            virtual bool removeObject(Object* obj_);
        public:
            struct TransformInfo : public Updater::UpdateInfo {
                Math::Point<> _prevPos;
                Math::Matrix3x3 _prevRot;

                TransformInfo(Updater::OBJECT_PRIORITY prio_=Updater::OBJ_DISABLED, bool isOneShot_=false) : Updater::UpdateInfo(prio_,isOneShot_) {}
            };

            TransformChangeDetector() : Updater(Updater::TRANSFORM_CHANGE_DETECTOR, "TRANSFORM_CHANGE_DETECTOR", Updater::UPD_1, 0.0f) {}

            virtual bool update(float dt_);

            bool registerListener(Object* obj_, TransformChangeListener* listener_);
            bool unregisterListener(Object* obj_, TransformChangeListener* listener_);
        };
    }
}

#endif //CTRANSFORM_CHANGE_DETECTOR_H