src/framework/GameSystem/GridReference.h

   1 /*
   2  * Copyright (C) 2005-2013 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> class GridRefManager;
  25
  26 template<class OBJECT>
  27 class MANGOS_DLL_SPEC GridReference : public Reference<GridRefManager<OBJECT>, OBJECT>
  28 {
  29     protected:
  30
  31         void targetObjectBuildLink() override
  32         {
  33             // called from link()
  34             this->getTarget()->insertFirst(this);
  35             this->getTarget()->incSize();
  36         }
  37
  38         void targetObjectDestroyLink() override
  39         {
  40             // called from unlink()
  41             if (this->isValid())
  42                 this->getTarget()->decSize();
  43         }
  44
  45         void sourceObjectDestroyLink() override
  46         {
  47             // called from invalidate()
  48             this->getTarget()->decSize();
  49         }
  50
  51     public:
  52
  53         GridReference()
  54             : Reference<GridRefManager<OBJECT>, OBJECT>()
  55         {
  56         }
  57
  58         ~GridReference()
  59         {
  60             this->unlink();
  61         }
  62
  63         GridReference* next()
  64         {
  65             return (GridReference*)Reference<GridRefManager<OBJECT>, OBJECT>::next();
  66         }
  67 };
  68
  69 #endif