Core/Creatures: Allow disabling melee attacks for all creatures, not just the ones using SAI

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

@@ -60,7 +60,7 @@ void UnitAI::AttackStartCaster(Unit* victim, float dist)
 
 void UnitAI::DoMeleeAttackIfReady()
 {
-    if (me->HasUnitState(UNIT_STATE_CASTING))
+    if (me->HasUnitState(UNIT_STATE_CASTING) || (me->IsCreature() && !me->ToCreature()->CanMelee()))
         return;
 
     Unit* victim = me->GetVictim();

src/server/game/AI/SmartScripts/SmartAI.cpp

@@ -33,7 +33,7 @@
 
 SmartAI::SmartAI(Creature* creature, uint32 scriptId) : CreatureAI(creature, scriptId), _charmed(false), _followCreditType(0), _followArrivedTimer(0), _followCredit(0), _followArrivedEntry(0), _followDistance(0.f), _followAngle(0.f),
     _escortState(SMART_ESCORT_NONE), _escortNPCFlags(0), _escortInvokerCheckTimer(1000), _currentWaypointNode(0), _waypointReached(false), _waypointPauseTimer(0), _waypointPauseForced(false), _repeatWaypointPath(false),
-    _OOCReached(false), _waypointPathEnded(false), _run(true), _evadeDisabled(false), _canAutoAttack(true), _canCombatMove(true), _invincibilityHPLevel(0), _despawnTime(0), _despawnState(0), _vehicleConditionsTimer(0),
+    _OOCReached(false), _waypointPathEnded(false), _run(true), _evadeDisabled(false), _canCombatMove(true), _invincibilityHPLevel(0), _despawnTime(0), _despawnState(0), _vehicleConditionsTimer(0),
     _gossipReturn(false), _escortQuestId(0)
 {
     _vehicleConditions = sConditionMgr->HasConditionsForNotGroupedEntry(CONDITION_SOURCE_TYPE_CREATURE_TEMPLATE_VEHICLE, creature->GetEntry());
@@ -309,8 +309,7 @@ void SmartAI::UpdateAI(uint32 diff)
     if (!hasVictim)
         return;
 
-    if (_canAutoAttack)
-        DoMeleeAttackIfReady();
+    DoMeleeAttackIfReady();
 }
 
 bool SmartAI::IsEscortInvokerInRange()
@@ -594,11 +593,11 @@ void SmartAI::AttackStart(Unit* who)
     if (!IsAIControlled())
     {
         if (who)
-            me->Attack(who, _canAutoAttack);
+            me->Attack(who, true);
         return;
     }
 
-    if (who && me->Attack(who, _canAutoAttack))
+    if (who && me->Attack(who, true))
     {
         me->GetMotionMaster()->Clear(MOTION_PRIORITY_NORMAL);
         me->PauseMovement();

src/server/game/AI/SmartScripts/SmartAI.h

@@ -68,12 +68,8 @@ class TC_GAME_API SmartAI : public CreatureAI
         {
             _escortState &= ~escortState;
         }
-        void SetAutoAttack(bool on)
-        {
-            _canAutoAttack = on;
-        }
         void SetCombatMove(bool on, bool stopMoving = false);
-        bool CanCombatMove()
+        bool CanCombatMove() const
         {
             return _canCombatMove;
         }
@@ -268,7 +264,6 @@ class TC_GAME_API SmartAI : public CreatureAI
 
         bool _run;
         bool _evadeDisabled;
-        bool _canAutoAttack;
         bool _canCombatMove;
         uint32 _invincibilityHPLevel;
 

src/server/game/AI/SmartScripts/SmartScript.cpp

@@ -743,10 +743,7 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
         }
         case SMART_ACTION_AUTO_ATTACK:
         {
-            if (!IsSmart())
-                break;
-
-            ENSURE_AI(SmartAI, me->AI())->SetAutoAttack(e.action.autoAttack.attack != 0);
+            me->SetCanMelee(e.action.autoAttack.attack != 0);
             TC_LOG_DEBUG("scripts.ai", "SmartScript::ProcessAction:: SMART_ACTION_AUTO_ATTACK: Creature: {} bool on = {}",
                 me->GetGUID().ToString(), e.action.autoAttack.attack);
             break;

src/server/game/Entities/Creature/Creature.h

@@ -184,6 +184,8 @@ class TC_GAME_API Creature : public Unit, public GridObject<Creature>, public Ma
 
         SpellSchoolMask GetMeleeDamageSchoolMask(WeaponAttackType /*attackType*/ = BASE_ATTACK) const override { return m_meleeDamageSchoolMask; }
         void SetMeleeDamageSchool(SpellSchools school) { m_meleeDamageSchoolMask = SpellSchoolMask(1 << school); }
+        bool CanMelee() const { return !_staticFlags.HasFlag(CREATURE_STATIC_FLAG_NO_MELEE); }
+        void SetCanMelee(bool canMelee) { _staticFlags.ApplyFlag(CREATURE_STATIC_FLAG_NO_MELEE, !canMelee); }
 
         bool HasSpell(uint32 spellID) const override;
 

src/server/game/Entities/Creature/CreatureData.h

@@ -55,7 +55,7 @@ enum CreatureStaticFlags
     CREATURE_STATIC_FLAG_COMBAT_PING                       = 0x00020000,
     CREATURE_STATIC_FLAG_AQUATIC                           = 0x00040000, // aka Water Only, creature_template_movement.Ground = 0
     CREATURE_STATIC_FLAG_AMPHIBIOUS                        = 0x00080000, // creature_template_movement.Swim = 1
-    CREATURE_STATIC_FLAG_NO_MELEE_FLEE                     = 0x00100000, // Prevents melee(does not prevent chasing, does not make creature passive). Not sure what 'Flee' means but another flag is named NO_MELEE_APPROACH
+    CREATURE_STATIC_FLAG_NO_MELEE                          = 0x00100000, // "No Melee (Flee)" Prevents melee(does not prevent chasing, does not make creature passive). Not sure what 'Flee' means but another flag is named NO_MELEE_APPROACH
     CREATURE_STATIC_FLAG_VISIBLE_TO_GHOSTS                 = 0x00200000, // CREATURE_TYPE_FLAG_VISIBLE_TO_GHOSTS
     CREATURE_STATIC_FLAG_PVP_ENABLING                      = 0x00400000, // Old UNIT_FLAG_PVP_ENABLING, now UNIT_BYTES_2_OFFSET_PVP_FLAG from UNIT_FIELD_BYTES_2
     CREATURE_STATIC_FLAG_DO_NOT_PLAY_WOUND_ANIM            = 0x00800000, // CREATURE_TYPE_FLAG_DO_NOT_PLAY_WOUND_ANIM

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

@@ -5550,8 +5550,14 @@ bool Unit::Attack(Unit* victim, bool meleeAttack)
 
     Creature* creature = ToCreature();
     // creatures cannot attack while evading
-    if (creature && creature->IsInEvadeMode())
-        return false;
+    if (creature)
+    {
+        if (creature->IsInEvadeMode())
+            return false;
+
+        if (!creature->CanMelee())
+            meleeAttack = false;
+    }
 
     // nobody can attack GM in GM-mode
     if (victim->GetTypeId() == TYPEID_PLAYER)