Scripts/Ulduar: Make XT-002 and Ignis enter evade mode if pulled out from their fight areas.

Also implement a default case for EnterEvadeIfOutOfCombatArea.

src/server/game/AI/ScriptedAI/ScriptedCreature.cpp

@@ -454,9 +454,11 @@ bool ScriptedAI::EnterEvadeIfOutOfCombatArea(uint32 const diff)
             if (x > 3218.86f && x < 3275.69f && y < 572.40f && y > 484.68f)
                 return false;
             break;
-        default:
-            sLog->outError("TSCR: EnterEvadeIfOutOfCombatArea used for creature entry %u, but does not have any definition.", me->GetEntry());
-            return false;
+        default: // For most of creatures that certain area is their home area.
+            sLog->outDetail("TSCR: EnterEvadeIfOutOfCombatArea used for creature entry %u, but does not have any definition. Using the default one.", me->GetEntry());
+            uint32 homeAreaId = me->GetMap()->GetAreaId(me->GetHomePosition().GetPositionX(), me->GetHomePosition().GetPositionY(), me->GetHomePosition().GetPositionZ());
+            if(me->GetAreaId() == homeAreaId)
+                return false;
     }
 
     EnterEvadeMode();

src/server/scripts/Northrend/Ulduar/ulduar/boss_ignis.cpp

@@ -273,6 +273,8 @@ class boss_ignis : public CreatureScript
                 }
 
                 DoMeleeAttackIfReady();
+
+                EnterEvadeIfOutOfCombatArea(diff);
             }
 
         private:

src/server/scripts/Northrend/Ulduar/ulduar/boss_xt002.cpp

@@ -306,6 +306,8 @@ class boss_xt002 : public CreatureScript
 
                 if (_phase == 1)
                     DoMeleeAttackIfReady();
+
+                EnterEvadeIfOutOfCombatArea(diff);
             }
 
             void PassengerBoarded(Unit* who, int8 /*seatId*/, bool apply)