fix(Scripts/Northrend): improve EoE encounter visuals

Update and fix teleport visual spell

Set Npc flags of Hover Disk

Author: sogladev

data/sql/updates/pending_db_world/rev_1774496999317065090.sql

@@ -0,0 +1,6 @@
+--
+-- npcflag +SPELLCLICK
+-- unit_flag -NON_ATTACKABLE, +NOT_SELECTABLE
+UPDATE `creature_template` SET `faction` = 14, `npcflag` = `npcflag` | 16777216, `unit_flags` = (`unit_flags` & (~2)) | 33554432 WHERE (`entry` IN (30248, 31749));
+DELETE FROM `npc_spellclick_spells` WHERE `npc_entry` = 31749;
+INSERT INTO `npc_spellclick_spells` (`npc_entry`, `spell_id`, `cast_flags`, `user_type`) VALUES(31749, 61421, 0, 0);

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

@@ -887,7 +887,10 @@ struct npc_nexus_lord : public ScriptedAI
     {
         me->SetReactState(REACT_PASSIVE);
         timer = 0;
-        me->CastSpell(me, SPELL_TELEPORT_VISUAL, true);
+        ScheduleUniqueTimedEvent(0s, [&]
+        {
+            DoCastSelf(SPELL_TELEPORT_VISUAL, true);
+        }, EVENT_TELEPORT_VISUAL);
     }
 
     uint16 timer;
@@ -952,7 +955,10 @@ struct npc_scion_of_eternity : public ScriptedAI
     npc_scion_of_eternity(Creature* creature) : ScriptedAI(creature)
     {
         me->SetReactState(REACT_PASSIVE);
-        me->CastSpell(me, SPELL_TELEPORT_VISUAL, true);
+        ScheduleUniqueTimedEvent(0s, [&]
+        {
+            DoCastSelf(SPELL_TELEPORT_VISUAL, true);
+        }, EVENT_TELEPORT_VISUAL);
         ScheduleTimedEvent(20s, 25s, [&]
         {
             GuidVector guids;
@@ -994,6 +1000,7 @@ struct npc_hover_disk : public VehicleAI
     npc_hover_disk(Creature* creature) : VehicleAI(creature)
     {
         events.Reset();
+        me->SetAnimTier(AnimTier::Fly);
     }
 
     EventMap events;
@@ -1003,6 +1010,7 @@ struct npc_hover_disk : public VehicleAI
         events.Reset();
         if (!who)
             return;
+
         if (apply)
         {
             if (who->IsPlayer())
@@ -1032,6 +1040,9 @@ struct npc_hover_disk : public VehicleAI
             me->DisableSpline();
             me->SetCanFly(false);
             me->GetMotionMaster()->MoveLand(0, me->GetPositionX(), me->GetPositionY(), 267.24f, 10.0f);
+            me->SetImmuneToNPC(true);
+            me->RemoveUnitFlag(UNIT_FLAG_NOT_SELECTABLE);
+            me->SetFaction(FACTION_FRIENDLY);
 
             if (who->IsPlayer())
             {
@@ -1150,7 +1161,10 @@ struct npc_alexstrasza : public ScriptedAI
 
 struct npc_eoe_wyrmrest_skytalon : public VehicleAI
 {
-    npc_eoe_wyrmrest_skytalon(Creature* creature) : VehicleAI(creature) { }
+    npc_eoe_wyrmrest_skytalon(Creature* creature) : VehicleAI(creature)
+    {
+        me->SetAnimTier(AnimTier::Fly);
+    }
 
     void IsSummonedBy(WorldObject* summoner) override
     {

src/server/scripts/Northrend/Nexus/EyeOfEternity/eye_of_eternity.h

@@ -73,7 +73,7 @@ enum eSpells
     SPELL_POWER_SPARK_GROUND_BUFF       = 55852,
     SPELL_POWER_SPARK_MALYGOS_BUFF      = 56152,
 
-    SPELL_TELEPORT_VISUAL               = 52096,
+    SPELL_TELEPORT_VISUAL               = 41232,
 
     SPELL_SCION_ARCANE_BARRAGE          = 56397,
     SPELL_ARCANE_SHOCK                  = 57058,