[7776] Completed implementation of CMSG_SPELLCLICK

For vehicles, you have to add the correct SPELL_AURA_CONTROL_VEHICLE spells to
npc_spellclick_spells, otherwise you won't be able to use them

src/game/ObjectMgr.cpp

@@ -5909,6 +5909,76 @@ void ObjectMgr::LoadPointsOfInterest()
     sLog.outString(">> Loaded %u Points of Interest definitions", count);
 }
 
+void ObjectMgr::LoadNPCSpellClickSpells()
+{
+    uint32 count = 0;
+
+    mSpellClickInfoMap.clear();
+
+    QueryResult *result = WorldDatabase.Query("SELECT npc_entry, spell_id, quest_id, cast_flags FROM npc_spellclick_spells");
+
+    if(!result)
+    {
+        barGoLink bar(1);
+
+        bar.step();
+
+        sLog.outString();
+        sLog.outErrorDb(">> Loaded 0 spellclick spells. DB table `npc_spellclick_spells` is empty.");
+        return;
+    }
+
+    barGoLink bar(result->GetRowCount());
+
+    do
+    {
+        Field *fields = result->Fetch();
+        bar.step();
+
+        uint32 npc_entry = fields[0].GetUInt32();
+        CreatureInfo const* cInfo = GetCreatureTemplate(npc_entry);
+        if (!cInfo)
+        {
+            sLog.outErrorDb("Table npc_spellclick_spells references unknown creature_template %u. Skipping entry.", npc_entry);
+            continue;
+        }
+
+        uint32 spellid = fields[1].GetUInt32();
+        SpellEntry const *spellinfo = sSpellStore.LookupEntry(spellid);
+        if (!spellinfo)
+        {
+            sLog.outErrorDb("Table npc_spellclick_spells references unknown spellid %u. Skipping entry.", spellid);
+            continue;
+        }
+
+        uint32 quest = fields[2].GetUInt32();
+
+        // quest might be 0 to enable spellclick independent of any quest
+        if (quest)
+        {
+            if(mQuestTemplates.find(quest) == mQuestTemplates.end())
+            {
+                sLog.outErrorDb("Table npc_spellclick_spells references unknown quest %u. Skipping entry.", spellid);
+                continue;
+            }
+
+        }
+
+        uint8 castFlags = fields[3].GetUInt8();
+        SpellClickInfo info;
+        info.spellId = spellid;
+        info.questId = quest;
+        info.castFlags = castFlags;
+        mSpellClickInfoMap.insert(SpellClickInfoMap::value_type(npc_entry, info));
+        ++count;
+    } while (result->NextRow());
+
+    delete result;
+
+    sLog.outString();
+    sLog.outString(">> Loaded %u spellclick definitions", count);
+}
+
 void ObjectMgr::LoadWeatherZoneChances()
 {
     uint32 count = 0;