Core/Units: Allow autoattack if channelling with SPELL_ATTR5_ALLOW_ACTIONS_DURING_CHANNEL

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

@@ -61,7 +61,11 @@ void UnitAI::AttackStartCaster(Unit* victim, float dist)
 void UnitAI::DoMeleeAttackIfReady()
 {
     if (me->HasUnitState(UNIT_STATE_CASTING))
-        return;
+    {
+        Spell* channeledSpell = me->GetCurrentSpell(CURRENT_CHANNELED_SPELL);
+        if (!channeledSpell || !channeledSpell->GetSpellInfo()->HasAttribute(SPELL_ATTR5_ALLOW_ACTIONS_DURING_CHANNEL))
+            return;
+    }
 
     Unit* victim = me->GetVictim();
 

src/server/game/Entities/Unit/Unit.cpp

@@ -1943,6 +1943,13 @@ void Unit::AttackerStateUpdate(Unit* victim, WeaponAttackType attType, bool extr
     if (HasUnitState(UNIT_STATE_CANNOT_AUTOATTACK) || HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_PACIFIED))
         return;
 
+    if (HasUnitState(UNIT_STATE_CASTING))
+    {
+        Spell* channeledSpell = GetCurrentSpell(CURRENT_CHANNELED_SPELL);
+        if (!channeledSpell || !channeledSpell->GetSpellInfo()->HasAttribute(SPELL_ATTR5_ALLOW_ACTIONS_DURING_CHANNEL))
+            return;
+    }
+
     if (!victim->IsAlive())
         return;
 

src/server/game/Entities/Unit/Unit.h

@@ -262,7 +262,7 @@ enum UnitState : uint32
     UNIT_STATE_CONTROLLED          = UNIT_STATE_CONFUSED | UNIT_STATE_STUNNED | UNIT_STATE_FLEEING,
     UNIT_STATE_CANT_CLIENT_CONTROL = UNIT_STATE_CHARMED | UNIT_STATE_FLEEING | UNIT_STATE_CONFUSED | UNIT_STATE_POSSESSED,
     UNIT_STATE_LOST_CONTROL        = UNIT_STATE_CONTROLLED | UNIT_STATE_POSSESSED | UNIT_STATE_JUMPING | UNIT_STATE_CHARGING,
-    UNIT_STATE_CANNOT_AUTOATTACK   = UNIT_STATE_CONTROLLED | UNIT_STATE_CHARGING | UNIT_STATE_CASTING,
+    UNIT_STATE_CANNOT_AUTOATTACK   = UNIT_STATE_CONTROLLED | UNIT_STATE_CHARGING,
     UNIT_STATE_SIGHTLESS           = UNIT_STATE_LOST_CONTROL | UNIT_STATE_EVADE,
     UNIT_STATE_CANNOT_TURN         = UNIT_STATE_LOST_CONTROL | UNIT_STATE_ROTATING | UNIT_STATE_FOCUSING,
     UNIT_STATE_NOT_MOVE            = UNIT_STATE_ROOT | UNIT_STATE_STUNNED | UNIT_STATE_DIED | UNIT_STATE_DISTRACTED,