ITrackable.h

#ifndef _TRACKABLE_H
#define _TRACKABLE_H

class ITrackable
{
    protected:

        std::list<ITrackable*> m_Trackers; // objects that are tracking us
        //std::list<ITrackable*> m_Track; // objects that we're tracking

    public:

        ITrackable() {}
        virtual ~ITrackable() {
            // notify trackers of deletion
            //foreach(ITrackable* t, m_Trackers)
            //    t->removeTracker(t);
        }

        void addTracker(ITrackable* t) {
            m_Trackers.push_back(t);
        }
        
        void clearTrackers() {
            m_Trackers.clear();    
        }
        
        void removeTracker(ITrackable* t) {
            for(std::list<ITrackable*>::iterator itr = m_Trackers.begin();
                itr != m_Trackers.end();
                ++itr)
            {
                if(*itr == t) {
                    m_Trackers.erase(itr);
                    break;
                }
            }
            //_onRemoveTracker();
        }

        //virtual void _onRemoveTracker(ITrackable* t) = 0;
};

#endif