src/framework/GameSystem/GridReference.h

   1 /*
   2  * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef _GRIDREFERENCE_H
  20 #define _GRIDREFERENCE_H
  21
  22 #include "Utilities/LinkedReference/Reference.h"
  23
  24 template<class OBJECT>
  25 class GridRefManager;
  26
  27 template<class OBJECT>
  28 class MANGOS_DLL_SPEC GridReference : public Reference<GridRefManager<OBJECT>, OBJECT>
  29 {
  30     protected:
  31         void targetObjectBuildLink()
  32         {
  33             // called from link()
  34             this->getTarget()->insertFirst(this);
  35             this->getTarget()->incSize();
  36         }
  37         void targetObjectDestroyLink()
  38         {
  39             // called from unlink()
  40             if(this->isValid()) this->getTarget()->decSize();
  41         }
  42         void sourceObjectDestroyLink()
  43         {
  44             // called from invalidate()
  45             this->getTarget()->decSize();
  46         }
  47     public:
  48         GridReference() : Reference<GridRefManager<OBJECT>, OBJECT>() {}
  49         ~GridReference() { this->unlink(); }
  50         GridReference *next() { return (GridReference*)Reference<GridRefManager<OBJECT>, OBJECT>::next(); }
  51 };
  52 #endif