feat(Core/Unit): Implement DoCastRandomTarget() helper (#8876)

src/server/game/AI/CoreAI/UnitAI.cpp

@@ -205,6 +205,19 @@ void UnitAI::DoCastAOE(uint32 spellId, bool triggered)
     me->CastSpell((Unit*)nullptr, spellId, triggered);
 }
 
+void UnitAI::DoCastRandomTarget(uint32 spellId, uint32 threatTablePosition, float dist, bool playerOnly, bool triggered)
+{
+    if (!triggered && me->HasUnitState(UNIT_STATE_CASTING))
+    {
+        return;
+    }
+
+    if (Unit* target = SelectTarget(SELECT_TARGET_RANDOM, threatTablePosition, dist, playerOnly))
+    {
+        me->CastSpell(target, spellId, triggered);
+    }
+}
+
 #define UPDATE_TARGET(a) {if (AIInfo->target<a) AIInfo->target=a;}
 
 void UnitAI::FillAISpellInfo()

src/server/game/AI/CoreAI/UnitAI.h

@@ -300,6 +300,7 @@ public:
     void DoCastToAllHostilePlayers(uint32 spellid, bool triggered = false);
     void DoCastVictim(uint32 spellId, bool triggered = false);
     void DoCastAOE(uint32 spellId, bool triggered = false);
+    void DoCastRandomTarget(uint32 spellId, uint32 threatTablePosition = 0, float dist = 0.0f, bool playerOnly = true, bool triggered = false);
 
     float DoGetSpellMaxRange(uint32 spellId, bool positive = false);
 

src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_the_beast.cpp

@@ -201,10 +201,7 @@ public:
                         events.ScheduleEvent(EVENT_FLAME_BREAK, 10 * IN_MILLISECONDS);
                         break;
                     case EVENT_IMMOLATE:
-                        if (Unit* target = SelectTarget(SELECT_TARGET_RANDOM, 0, 100, true))
+                        DoCastRandomTarget(SPELL_IMMOLATE, 0, 100.0f);
-                        {
-                            DoCast(target, SPELL_IMMOLATE);
-                        }
                         events.ScheduleEvent(EVENT_IMMOLATE, 8 * IN_MILLISECONDS);
                         break;
                     case EVENT_TERRIFYING_ROAR: