Imported MaNGOS revision 6767 from http://mangos.svn.sourceforge.net/svnroot/mangos/trunk/

src/framework/GameSystem/GridReference.h

@@ -0,0 +1,52 @@
+/* 
+ * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _GRIDREFERENCE_H
+#define _GRIDREFERENCE_H
+
+#include "Utilities/LinkedReference/Reference.h"
+
+template<class OBJECT>
+class GridRefManager;
+
+template<class OBJECT>
+class MANGOS_DLL_SPEC GridReference : public Reference<GridRefManager<OBJECT>, OBJECT>
+{
+    protected:
+        void targetObjectBuildLink()
+        {
+            // called from link()
+            this->getTarget()->insertFirst(this);
+            this->getTarget()->incSize();
+        }
+        void targetObjectDestroyLink()
+        {
+            // called from unlink()
+            if(this->isValid()) this->getTarget()->decSize();
+        }
+        void sourceObjectDestroyLink()
+        {
+            // called from invalidate()
+            this->getTarget()->decSize();
+        }
+    public:
+        GridReference() : Reference<GridRefManager<OBJECT>, OBJECT>() {}
+        ~GridReference() { this->unlink(); }
+        GridReference *next() { return (GridReference*)Reference<GridRefManager<OBJECT>, OBJECT>::next(); }
+};
+#endif