Pet/Guardian AI hook re-organizing (#19824)

* Pet/Guardian AI hook re-organizing:
- Adjust OwnerAttacked/OwnerAttackedBy hooks on CreatureAI to fire for all owned units, not just player pets. This should allow guardians to more reliably recognize valid targets.
- Kill off the AttackedBy hook. While it was defined in CreatureAI.h as virtual, it was only ever invoked for player pets in specific situations. This makes it classic developer bait.
  - Adjust PetAI to use DamageTaken instead of AttackedBy.
  - Adjust behavior of AttackStart on PetAI to compensate.

(cherry picked from commit 1660bb7d27d6f42b49012a6b57e3c2b2eab20fd3)

1 files changed, 5 insertions, 3 deletions

diff --git a/src/server/game/Spells/Spell.cpp b/src/server/game/Spells/Spell.cpp
index f0e999141f1..94d1b67a895 100644
--- a/src/server/game/Spells/Spell.cpp
+++ b/src/server/game/Spells/Spell.cpp
@@ -3170,9 +3170,11 @@ void Spell::_cast(bool skipCheck)
         // Let any pets know we've attacked something. Check DmgClass for harmful spells only
         // This prevents spells such as Hunter's Mark from triggering pet attack
         if (this->GetSpellInfo()->DmgClass != SPELL_DAMAGE_CLASS_NONE)
-            if (Pet* playerPet = playerCaster->GetPet())
-                if (playerPet->IsAlive() && playerPet->isControlled() && (m_targets.GetTargetMask() & TARGET_FLAG_UNIT))
-                    playerPet->AI()->OwnerAttacked(m_targets.GetUnitTarget());
+            if (Unit* unitTarget = m_targets.GetUnitTarget())
+                for (Unit* controlled : playerCaster->m_Controlled)
+                    if (Creature* cControlled = controlled->ToCreature())
+                        if (cControlled->IsAIEnabled)
+                            cControlled->AI()->OwnerAttacked(unitTarget);
     }
 
     SetExecutedCurrently(true);