fix(Scripts/BlackTemple): Shade of Akama should despawn on evade and Akama despawns before dying (#19894)

* fix(Scripts/BlackTemple): Shade of Akama should despawn on evade and Akama despawns before dying

* Create rev_1725714358950337100.sql

* Update boss_shade_of_akama.cpp

data/sql/updates/pending_db_world/rev_1725714358950337100.sql

@@ -0,0 +1,2 @@
+--
+UPDATE `creature_template` SET `flags_extra` = `flags_extra` |2147483648 WHERE `entry` = 22841;

src/server/scripts/Outland/BlackTemple/boss_shade_of_akama.cpp

@@ -220,6 +220,7 @@ struct npc_akama_shade : public ScriptedAI
         DoCastSelf(SPELL_STEALTH, true);
         me->SetWalk(true);
         _sayLowHealth = false;
+        _died = false;
         scheduler.CancelAll();
     }
 
@@ -232,14 +233,14 @@ struct npc_akama_shade : public ScriptedAI
             case POINT_ENGAGE:
                 me->SetHomePosition(me->GetPosition());
                 me->SetFaction(FACTION_ENGAGE);
-                DoCast(me, SPELL_AKAMA_SOUL_CHANNEL, true);
+                DoCastSelf(SPELL_AKAMA_SOUL_CHANNEL, true);
                 break;
             case POINT_OUTRO:
                 DoCastSelf(SPELL_AKAMA_SOUL_RETRIEVE, true);
                 ScheduleUniqueTimedEvent(15600ms, [&]
                 {
-                        Talk(SAY_BROKEN_FREE_0);
+                    Talk(SAY_BROKEN_FREE_0);
-                        me->SummonCreatureGroup(SUMMON_GROUP_BROKENS);
+                    me->SummonCreatureGroup(SUMMON_GROUP_BROKENS);
                 }, 1);
                 ScheduleUniqueTimedEvent(26550ms, [&]
                 {
@@ -275,6 +276,19 @@ struct npc_akama_shade : public ScriptedAI
             _sayLowHealth = true;
             Talk(SAY_LOW_HEALTH);
         }
+        else if (damage >= me->GetHealth() && !_died)
+        {
+            damage = me->GetHealth() - 1;
+            Talk(SAY_DEATH);
+            if (Creature* shade = instance->GetCreature(DATA_SHADE_OF_AKAMA))
+            {
+                shade->SetHomePosition(shade->GetHomePosition());
+                shade->AI()->EnterEvadeMode();
+            }
+
+            me->DespawnOrUnsummon();
+            ScriptedAI::EnterEvadeMode(EvadeReason::EVADE_REASON_OTHER);
+        }
     }
 
     void DoAction(int32 param) override
@@ -298,18 +312,6 @@ struct npc_akama_shade : public ScriptedAI
 
     void EnterEvadeMode(EvadeReason /*why*/) override { }
 
-    void JustDied(Unit* /*killer*/) override
-    {
-        Talk(SAY_DEATH);
-        if (Creature* shade = instance->GetCreature(DATA_SHADE_OF_AKAMA))
-        {
-            shade->SetHomePosition(shade->GetHomePosition());
-            shade->AI()->EnterEvadeMode();
-        }
-
-        me->DespawnOrUnsummon();
-    }
-
     void JustEngagedWith(Unit* /*who*/) override
     {
         ScheduleTimedEvent(2s, [&]
@@ -338,6 +340,7 @@ struct npc_akama_shade : public ScriptedAI
 
     private:
         bool _sayLowHealth;
+        bool _died;
 };
 
 struct npc_creature_generator_akama : public ScriptedAI
@@ -445,27 +448,18 @@ private:
 
 struct npc_ashtongue_sorcerer : public NullCreatureAI
 {
-    npc_ashtongue_sorcerer(Creature* creature) : NullCreatureAI(creature)
+    npc_ashtongue_sorcerer(Creature* creature) : NullCreatureAI(creature) { }
-    {
-        instance = creature->GetInstanceScript();
-    }
 
     void MovementInform(uint32 type, uint32 point) override
     {
         if (type == POINT_MOTION_TYPE && point == POINT_ENGAGE)
             me->CastSpell(me, SPELL_SHADE_SOUL_CHANNEL, true);
     }
-
-private:
-    InstanceScript* instance;
 };
 
 struct npc_ashtongue_channeler : public NullCreatureAI
 {
-    npc_ashtongue_channeler(Creature* creature) : NullCreatureAI(creature)
+    npc_ashtongue_channeler(Creature* creature) : NullCreatureAI(creature) { }
-    {
-        instance = creature->GetInstanceScript();
-    }
 
     void Reset() override
     {
@@ -484,7 +478,6 @@ struct npc_ashtongue_channeler : public NullCreatureAI
     }
 
 private:
-    InstanceScript* instance;
     TaskScheduler scheduler;
 };