Implement instance script for Zul'Farrak and prevent Gahz'Rilla from being summoned multiple times.

--HG--
branch : trunk

src/scripts/CMakeLists.txt

@@ -282,6 +282,7 @@ SET(scripts_STAT_SRCS
    kalimdor/wailing_caverns/instance_wailing_caverns.cpp
    kalimdor/wailing_caverns/wailing_caverns.cpp
    kalimdor/zulfarrak/zulfarrak.cpp
+   kalimdor/zulfarrak/instance_zulfarrak.cpp
    kalimdor/ashenvale.cpp
    kalimdor/azshara.cpp
    kalimdor/azuremyst_isle.cpp

src/scripts/kalimdor/zulfarrak/instance_zulfarrak.cpp

@@ -0,0 +1,58 @@
+ /*
+ * Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
+ *
+ * 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
+ */
+ 
+#include "ScriptedPch.h"
+
+#define NPC_GAHZRILLA 7273
+
+struct instance_zulfarrak : public ScriptedInstance
+{
+    instance_zulfarrak(Map* pMap) : ScriptedInstance(pMap) {Initialize();}
+
+    uint32 GahzRillaEncounter;
+
+    void Initialize()
+    {
+        GahzRillaEncounter = NOT_STARTED;
+    }
+
+    void OnCreatureCreate(Creature* pCreature, bool add)
+    {
+        if (pCreature->GetEntry() == NPC_GAHZRILLA)
+        {
+            if (GahzRillaEncounter >= IN_PROGRESS)
+                pCreature->DisappearAndDie();
+            else
+                GahzRillaEncounter = IN_PROGRESS;
+        }
+    }
+};
+ 
+InstanceData* GetInstanceData_instance_zulfarrak(Map* pMap)
+{
+    return new instance_zulfarrak(pMap);
+}
+
+void AddSC_instance_zulfarrak()
+{
+    Script *newscript;
+    newscript = new Script;
+    newscript->Name = "instance_zulfarrak";
+    newscript->GetInstanceData = &GetInstanceData_instance_zulfarrak;
+    newscript->RegisterSelf();
+}