source: code/branches/physics/src/ogreode/OgreOdeMaintainedList.h @ 1989

/*!
 * <File comment goes here!!>
 * 
 * Copyright (c) 2005 by <your name/ organization here>
 */
#ifndef _OGREODEMAINTAINEDLIST_H_
#define _OGREODEMAINTAINEDLIST_H_

#include "OgreOdePreReqs.h"

/*!
 * \brief
 * Write brief comment for OgreOde here.
 * 
 * Write detailed description for OgreOde here.
 * 
 * \remarks
 * Write remarks for OgreOde here.
 * 
 * \see
 * Separate items with the '|' character.
 */
namespace OgreOde
{

        /** Convenience class to make it easy to step through all MaintainedItem in a MaintainedList.
        */
        template <class T>
        class _OgreOdeExport MaintainedItemIterator
        {

        public:
                typedef std::deque<T*> MaintainedItemList;
                typedef std::map<size_t,T*> MaintainedItemMap;


        protected:
                typename MaintainedItemList::iterator mPos;
                typename MaintainedItemList::iterator mStart;
                typename MaintainedItemList::iterator mEnd;


        public:
                /// constructor, only available for MaintainedList::getIterator
                MaintainedItemIterator(typename MaintainedItemList::iterator start, typename MaintainedItemList::iterator end)
                {
                        mStart = mPos = start;
                        mEnd = end;
                }
                // Returns true when at the end of the MaintainedItem list
                inline bool end(void) const 
                {
                        return (mPos == mEnd);
                }
                /** Returns a pointer to the next MaintainedItem, and moves the iterator on by 1 element. */
                inline T* getNext(void)
                {
                        return static_cast<T*>(*mPos++);
                }
        };

        template <class T>
        class _OgreOdeExport MaintainedList
        {
        public:
                typedef std::deque<T*>                          MaintainedItemList;
                typedef std::map<size_t,T*>     MaintainedItemMap;

        public:
                MaintainedList(){};
                ~MaintainedList(){};

                void registerItem(T* ptr)       
                {
                        assert(ptr->getID());
                        _map[ptr->getID()] = ptr;
                        _list.push_back (ptr);
                }

                T* findItem(size_t id)
                {
                        assert (_map.find(id) != _map.end());
                        return _map[id];
                }

                void unregisterItem(size_t id)
                {
                        assert (_map.find(id) != _map.end());
                        T* m = _map[id];
                        _map.erase(id);

                        typename MaintainedItemList::iterator i = std::find(_list.begin (), 
                                _list.end (), 
                                m);
                        if(i != _list.end())
                        {
                                assert(*i == m);
                                _list.erase(i);
                        }
                }

                void setDebug(const bool debug)
                {
                        typename MaintainedItemList::iterator i = _list.begin();
                        typename MaintainedItemList::iterator end = _list.end();
                        for(;i != end;++i)
                        {
                                (*i)->setDebug(debug);
                        }
        }

        void setDebugContact(const bool debug)
        {
            typename MaintainedItemList::iterator i = _list.begin();
            typename MaintainedItemList::iterator end = _list.end();
            for(;i != end;++i)
            {
                (*i)->setDebugContact(debug);
            }
        }

        void updateDebugContact()
        {
            std::for_each(_list.begin (), 
                _list.end (),  
                std::mem_fun(&T::updateDebugContact));
        }



                void synchronise()
                {
                        std::for_each(_list.begin (), 
                                _list.end (),  
                                std::mem_fun(&T::synchronise));
                }

                void updateDrawState()
                {
                        std::for_each(_list.begin (), 
                                _list.end (),  
                                std::mem_fun(&T::updateDrawState));
                }
                void updatePreviousState()
                {
                        std::for_each(_list.begin (), 
                                _list.end (),  
                                std::mem_fun(&T::updatePreviousState));
                }

                void updateCurrentState()
                {
                        std::for_each(_list.begin (), 
                                _list.end (),  
                                std::mem_fun(&T::updateCurrentState));
                }

                void interpolateDrawState(const Ogre::Real alpha)
                {
                        typename MaintainedItemList::iterator i = _list.begin();
                        typename MaintainedItemList::iterator end = _list.end();
                        for(;i != end;++i)
                        {
                                (*i)->interpolateDrawState(alpha);
                        }
                }

                void notify(Body* body)
                {
                        typename MaintainedItemList::iterator i = _list.begin();
                        typename MaintainedItemList::iterator end = _list.end();
                        for(;i != end;++i)
                        {
                                (*i)->notify(body);
                        }
                }

                MaintainedItemIterator<T> getIterator(void)
                {
                        return MaintainedItemIterator<T>(_list.begin(), _list.end());
                }

        protected:

                MaintainedItemMap  _map;
                MaintainedItemList _list;
        };

}

#endif