Core/Vehicles:

* Added generic solution for vehicle accessories not relying on AI calls
* Only accessories marked as minion will be respawned when the vehicle enters evade mode
* Notify the summoner's AI when vehicle accessory fails to install and despawns

src/server/scripts/Northrend/CrusadersColiseum/TrialOfTheChampion/boss_grand_champions.cpp

@@ -172,9 +172,6 @@ public:
             uiChargeTimer = 5000;
             uiShieldBreakerTimer = 8000;
             uiBuffTimer = urand(30000,60000);
-
-            if (me->GetVehicleKit())
-                me->GetVehicleKit()->Reset();
         }
 
         void SetData(uint32 uiType, uint32 /*uiData*/)

src/server/scripts/Northrend/FrozenHalls/PitOfSaron/boss_krickandick.cpp

@@ -162,8 +162,6 @@ class boss_ick : public CreatureScript
 
             void EnterCombat(Unit * /*who*/)
             {
-                _vehicle->InstallAllAccessories();
-
                 if (Creature* krick = GetKrick())
                     DoScriptText(SAY_KRICK_AGGRO, krick);
 

src/server/scripts/Northrend/FrozenHalls/PitOfSaron/boss_scourgelord_tyrannus.cpp

@@ -301,7 +301,7 @@ class boss_rimefang : public CreatureScript
 
             void JustReachedHome()
             {
-                _vehicle->InstallAllAccessories();
+                _vehicle->InstallAllAccessories(false);
             }
 
             void DoAction(const int32 actionId)

src/server/scripts/Northrend/Nexus/EyeOfEternity/boss_malygos.cpp

@@ -874,12 +874,6 @@ public:
             instance = creature->GetInstanceScript();
         }
 
-        void Reset()
-        {
-            if (Vehicle* veh = me->GetVehicleKit())
-                veh->Reset();
-        }
-
         void PassengerBoarded(Unit* unit, int8 seat, bool apply)
         {
             if (apply)

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

@@ -221,7 +221,8 @@ class boss_flame_leviathan : public CreatureScript
             void InitializeAI()
             {
                 ASSERT(vehicle);
-                Reset();
+                if (!me->isDead())
+                    Reset();
                 ActiveTowersCount = 4;
                 Shutdown = 0;
                 ActiveTowers = false;
@@ -255,12 +256,6 @@ class boss_flame_leviathan : public CreatureScript
                 _Reset();
                 Shutdown = 0;
                 me->SetReactState(REACT_DEFENSIVE);
-                if (me->GetVehicleKit())
-                {
-                    me->GetVehicleKit()->Reset();
-                    if (me->GetVehicleKit()->GetPassenger(SEAT_CANNON))
-                        me->CastSpell(me->GetVehicleKit()->GetPassenger(SEAT_CANNON),AURA_STEALTH_DETECTION,false);
-                }
             }
 
             void EnterCombat(Unit* /*who*/)
@@ -344,7 +339,7 @@ class boss_flame_leviathan : public CreatureScript
             void SpellHit(Unit* /*caster*/, SpellEntry* const spell)
             {
                 if (spell->Id == SPELL_START_THE_ENGINE)
-                    vehicle->InstallAllAccessories();
+                    vehicle->InstallAllAccessories(false);
 
                 if (spell->Id == SPELL_ELECTROSHOCK)
                     me->InterruptSpell(CURRENT_CHANNELED_SPELL);
@@ -594,12 +589,6 @@ class boss_flame_leviathan_seat : public CreatureScript
             InstanceScript* instance;
             Vehicle* vehicle;
 
-            void Reset()
-            {
-                if (me->GetVehicleKit())
-                    me->GetVehicleKit()->Reset();
-            }
-
             void PassengerBoarded(Unit* who, int8 seatId, bool apply)
             {
                 if (!me->GetVehicle())
@@ -662,6 +651,7 @@ class boss_flame_leviathan_defense_cannon : public CreatureScript
             void Reset ()
             {
                 NapalmTimer = 5000;
+                DoCast(me, AURA_STEALTH_DETECTION);
             }
 
             void UpdateAI(uint32 const diff)