Revert "[3.3.5][master] Core/Movement: Smooth movement #13467 (#18020)"

This reverts commit 05fb27dae4e8af859e01e5b9e52b082cba217657.

(cherrypicked from a3c6880579f3326088ecbe5b8c08c4b75ed91a59)

5 files changed, 228 insertions, 203 deletions

diff --git a/src/server/game/AI/SmartScripts/SmartAI.cpp b/src/server/game/AI/SmartScripts/SmartAI.cpp
index 96ed78b08de..254f1316204 100644
--- a/src/server/game/AI/SmartScripts/SmartAI.cpp
+++ b/src/server/game/AI/SmartScripts/SmartAI.cpp
@@ -26,31 +26,33 @@
 #include "PetDefines.h"
 #include "Player.h"
 #include "ScriptMgr.h"
-#include "WaypointMovementGenerator.h"
 
 SmartAI::SmartAI(Creature* c) : CreatureAI(c)
 {
     mIsCharmed = false;
     // copy script to local (protection for table reload)
 
+    mWayPoints = nullptr;
     mEscortState = SMART_ESCORT_NONE;
     mCurrentWPID = 0;//first wp id is 1 !!
     mWPReached = false;
     mWPPauseTimer = 0;
-    mOOCReached = false;
-    mEscortNPCFlags = 0;
+    mLastWP = nullptr;
 
     mCanRepeatPath = false;
 
-    // Spawn in run mode
-    mRun = true;
-    m_Ended = false;
+    // spawn in run mode
+    me->SetWalk(false);
+    mRun = false;
     mEvadeDisabled = false;
 
+    mLastOOCPos = me->GetPosition();
+
     mCanAutoAttack = true;
     mCanCombatMove = true;
 
     mForcedPaused = false;
+    mLastWPIDReached = 0;
 
     mEscortQuestID = 0;
 
@@ -70,10 +72,6 @@ SmartAI::SmartAI(Creature* c) : CreatureAI(c)
     mJustReset = false;
 }
 
-SmartAI::~SmartAI()
-{
-}
-
 bool SmartAI::IsAIControlled() const
 {
     return !mIsCharmed;
@@ -97,79 +95,63 @@ void SmartAI::UpdateDespawn(const uint32 diff)
     } else mDespawnTime -= diff;
 }
 
-void SmartAI::StartPath(bool run, uint32 path, bool repeat, Unit* invoker)
+WayPoint* SmartAI::GetNextWayPoint()
+{
+    if (!mWayPoints || mWayPoints->empty())
+        return nullptr;
+
+    mCurrentWPID++;
+    WPPath::const_iterator itr = mWayPoints->find(mCurrentWPID);
+    if (itr != mWayPoints->end())
+    {
+        mLastWP = (*itr).second;
+        if (mLastWP->id != mCurrentWPID)
+        {
+            TC_LOG_ERROR("misc", "SmartAI::GetNextWayPoint: Got not expected waypoint id %u, expected %u", mLastWP->id, mCurrentWPID);
+        }
+        return (*itr).second;
+    }
+    return nullptr;
+}
+
+void SmartAI::StartPath(bool run, uint32 path, bool repeat, Unit* /*invoker*/)
 {
     if (me->IsInCombat())// no wp movement in combat
     {
         TC_LOG_ERROR("misc", "SmartAI::StartPath: Creature entry %u wanted to start waypoint movement while in combat, ignoring.", me->GetEntry());
         return;
     }
-
     if (HasEscortState(SMART_ESCORT_ESCORTING))
         StopPath();
-
-    SetRun(run);
-
     if (path)
         if (!LoadPath(path))
             return;
-
-    if (_path.nodes.empty())
+    if (!mWayPoints || mWayPoints->empty())
         return;
 
-    mCurrentWPID = 1;
-    m_Ended = false;
-
-    // Do not use AddEscortState, removing everything from previous cycle
-    mEscortState = SMART_ESCORT_ESCORTING;
+    AddEscortState(SMART_ESCORT_ESCORTING);
     mCanRepeatPath = repeat;
 
-    if (invoker && invoker->GetTypeId() == TYPEID_PLAYER)
+    SetRun(run);
+
+    if (WayPoint* wp = GetNextWayPoint())
     {
-        mEscortNPCFlags = me->m_unitData->NpcFlags[0];
-        me->SetNpcFlags(UNIT_NPC_FLAG_NONE);
+        mLastOOCPos = me->GetPosition();
+        me->GetMotionMaster()->MovePoint(wp->id, wp->x, wp->y, wp->z);
+        GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_START, nullptr, wp->id, GetScript()->GetPathId());
     }
-
-    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_START, nullptr, mCurrentWPID, GetScript()->GetPathId());
-
-    me->GetMotionMaster()->MovePath(_path, mCanRepeatPath);
 }
 
 bool SmartAI::LoadPath(uint32 entry)
 {
     if (HasEscortState(SMART_ESCORT_ESCORTING))
         return false;
-
-    WPPath const* path = sSmartWaypointMgr->GetPath(entry);
-    if (!path || path->empty())
+    mWayPoints = sSmartWaypointMgr->GetPath(entry);
+    if (!mWayPoints)
     {
         GetScript()->SetPathId(0);
         return false;
     }
-
-    for (WayPoint const &waypoint : *path)
-    {
-        float x = waypoint.x;
-        float y = waypoint.y;
-        float z = waypoint.z;
-
-        Trinity::NormalizeMapCoord(x);
-        Trinity::NormalizeMapCoord(y);
-
-        WaypointNode wp;
-        wp.id = waypoint.id;
-        wp.x = x;
-        wp.y = y;
-        wp.z = z;
-        wp.orientation = 0.f;
-        wp.moveType = mRun ? WAYPOINT_MOVE_TYPE_RUN : WAYPOINT_MOVE_TYPE_WALK;
-        wp.delay = 0;
-        wp.eventId = 0;
-        wp.eventChance = 100;
-
-        _path.nodes.push_back(std::move(wp));
-    }
-
     GetScript()->SetPathId(entry);
     return true;
 }
@@ -178,22 +160,22 @@ void SmartAI::PausePath(uint32 delay, bool forced)
 {
     if (!HasEscortState(SMART_ESCORT_ESCORTING))
         return;
-
     if (HasEscortState(SMART_ESCORT_PAUSED))
     {
-        TC_LOG_ERROR("misc", "SmartAI::PausePath: Creature entry %u wanted to pause waypoint (current waypoint: %u) movement while already paused, ignoring.", me->GetEntry(), mCurrentWPID);
+        TC_LOG_ERROR("misc", "SmartAI::PausePath: Creature entry %u wanted to pause waypoint movement while already paused, ignoring.", me->GetEntry());
         return;
     }
-
+    mForcedPaused = forced;
+    mLastOOCPos = me->GetPosition();
     AddEscortState(SMART_ESCORT_PAUSED);
     mWPPauseTimer = delay;
-    if (forced && !mWPReached)
+    if (forced)
     {
-        mForcedPaused = forced;
         SetRun(mRun);
-        me->StopMoving();
+        me->StopMoving();//force stop
+        me->GetMotionMaster()->MoveIdle();//force stop
     }
-    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_PAUSED, nullptr, mCurrentWPID, GetScript()->GetPathId());
+    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_PAUSED, nullptr, mLastWP->id, GetScript()->GetPathId());
 }
 
 void SmartAI::StopPath(uint32 DespawnTime, uint32 quest, bool fail)
@@ -203,28 +185,33 @@ void SmartAI::StopPath(uint32 DespawnTime, uint32 quest, bool fail)
 
     if (quest)
         mEscortQuestID = quest;
+    SetDespawnTime(DespawnTime);
+    //mDespawnTime = DespawnTime;
 
-    if (mDespawnState != 2)
-        SetDespawnTime(DespawnTime);
-
-    me->StopMoving();
-    me->GetMotionMaster()->MovementExpired(false);
+    mLastOOCPos = me->GetPosition();
+    me->StopMoving();//force stop
     me->GetMotionMaster()->MoveIdle();
-    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_STOPPED, nullptr, mCurrentWPID, GetScript()->GetPathId());
+    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_STOPPED, nullptr, mLastWP->id, GetScript()->GetPathId());
     EndPath(fail);
 }
 
 void SmartAI::EndPath(bool fail)
 {
+    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_ENDED, nullptr, mLastWP->id, GetScript()->GetPathId());
+
     RemoveEscortState(SMART_ESCORT_ESCORTING | SMART_ESCORT_PAUSED | SMART_ESCORT_RETURNING);
-    _path.nodes.clear();
+    mWayPoints = nullptr;
+    mCurrentWPID = 0;
     mWPPauseTimer = 0;
+    mLastWP = nullptr;
 
-    if (mEscortNPCFlags)
+    if (mCanRepeatPath)
     {
-        me->SetNpcFlags(NPCFlags(mEscortNPCFlags));
-        mEscortNPCFlags = 0;
+        if (IsAIControlled())
+            StartPath(mRun, GetScript()->GetPathId(), true);
     }
+    else
+        GetScript()->SetPathId(0);
 
     ObjectList* targets = GetScript()->GetTargetList(SMART_ESCORT_TARGETS);
     if (targets && mEscortQuestID)
@@ -268,36 +255,15 @@ void SmartAI::EndPath(bool fail)
             }
         }
     }
-
-    // End Path events should be only processed if it was SUCCESSFUL stop or stop called by SMART_ACTION_WAYPOINT_STOP
-    if (fail)
-        return;
-
-    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_ENDED, nullptr, mCurrentWPID, GetScript()->GetPathId());
-
-    if (mCanRepeatPath)
-    {
-        if (IsAIControlled())
-            StartPath(mRun, GetScript()->GetPathId(), mCanRepeatPath);
-    }
-    else
-        GetScript()->SetPathId(0);
-
     if (mDespawnState == 1)
         StartDespawn();
 }
 
 void SmartAI::ResumePath()
 {
-    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_RESUMED, NULL, mCurrentWPID, GetScript()->GetPathId());
-    RemoveEscortState(SMART_ESCORT_PAUSED);
-    mForcedPaused = false;
-    mWPReached = false;
-    mWPPauseTimer = 0;
     SetRun(mRun);
-
-    if (WaypointMovementGenerator<Creature>* move = dynamic_cast<WaypointMovementGenerator<Creature>*>(me->GetMotionMaster()->top()))
-        move->GetTrackerTimer().Reset(1);
+    if (mLastWP)
+        me->GetMotionMaster()->MovePoint(mLastWP->id, mLastWP->x, mLastWP->y, mLastWP->z);
 }
 
 void SmartAI::ReturnToLastOOCPos()
@@ -305,61 +271,69 @@ void SmartAI::ReturnToLastOOCPos()
     if (!IsAIControlled())
         return;
 
-    me->SetWalk(false);
-    float x, y, z, o;
-    me->GetHomePosition(x, y, z, o);
-    me->GetMotionMaster()->MovePoint(SMART_ESCORT_LAST_OOC_POINT, x, y, z);
+    SetRun(mRun);
+    me->GetMotionMaster()->MovePoint(SMART_ESCORT_LAST_OOC_POINT, mLastOOCPos);
 }
 
 void SmartAI::UpdatePath(const uint32 diff)
 {
     if (!HasEscortState(SMART_ESCORT_ESCORTING))
         return;
-
     if (mEscortInvokerCheckTimer < diff)
     {
         if (!IsEscortInvokerInRange())
         {
-            StopPath(0, mEscortQuestID, true);
-
-            // allow to properly hook out of range despawn action, which in most cases should perform the same operation as dying
-            GetScript()->ProcessEventsFor(SMART_EVENT_DEATH, me);
-            me->DespawnOrUnsummon(1);
-            return;
+            StopPath(mDespawnTime, mEscortQuestID, true);
         }
         mEscortInvokerCheckTimer = 1000;
-    }
-    else
-        mEscortInvokerCheckTimer -= diff;
-
+    } else mEscortInvokerCheckTimer -= diff;
     // handle pause
     if (HasEscortState(SMART_ESCORT_PAUSED))
     {
-        if (mWPPauseTimer <= diff)
+        if (mWPPauseTimer < diff)
         {
-            if (!me->IsInCombat() && !HasEscortState(SMART_ESCORT_RETURNING) && (mWPReached || mForcedPaused))
+            if (!me->IsInCombat() && !HasEscortState(SMART_ESCORT_RETURNING) && (mWPReached || mLastWPIDReached == SMART_ESCORT_LAST_OOC_POINT || mForcedPaused))
             {
-                ResumePath();
+                GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_RESUMED, nullptr, mLastWP->id, GetScript()->GetPathId());
+                RemoveEscortState(SMART_ESCORT_PAUSED);
+                if (mForcedPaused)// if paused between 2 wps resend movement
+                {
+                    ResumePath();
+                    mWPReached = false;
+                    mForcedPaused = false;
+                }
+                if (mLastWPIDReached == SMART_ESCORT_LAST_OOC_POINT)
+                    mWPReached = true;
             }
-        }
-        else
+            mWPPauseTimer = 0;
+        } else {
             mWPPauseTimer -= diff;
+        }
     }
-    else if (m_Ended) // end path
-    {
-        m_Ended = false;
-        StopPath();
-        return;
-    }
-
     if (HasEscortState(SMART_ESCORT_RETURNING))
     {
-        if (mOOCReached)//reached OOC WP
+        if (mWPReached)//reached OOC WP
         {
-            mOOCReached = false;
             RemoveEscortState(SMART_ESCORT_RETURNING);
             if (!HasEscortState(SMART_ESCORT_PAUSED))
                 ResumePath();
+            mWPReached = false;
+        }
+    }
+    if ((!me->HasReactState(REACT_PASSIVE) && me->IsInCombat()) || HasEscortState(SMART_ESCORT_PAUSED | SMART_ESCORT_RETURNING))
+        return;
+    // handle next wp
+    if (mWPReached)//reached WP
+    {
+        mWPReached = false;
+        if (mCurrentWPID == GetWPCount())
+        {
+            EndPath();
+        }
+        else if (WayPoint* wp = GetNextWayPoint())
+        {
+            SetRun(mRun);
+            me->GetMotionMaster()->MovePoint(wp->id, wp->x, wp->y, wp->z);
         }
     }
 }
@@ -435,44 +409,22 @@ bool SmartAI::IsEscortInvokerInRange()
 
 void SmartAI::MovepointReached(uint32 id)
 {
-    // override the id, path can be resumed any time and counter will reset
-    // mCurrentWPID holds proper id
-
-    // both point movement and escort generator can enter this function
-    if (id == SMART_ESCORT_LAST_OOC_POINT)
-    {
-        mOOCReached = true;
-        return;
-    }
-
-    mCurrentWPID = id + 1; // in SmartAI increase by 1
+    if (id != SMART_ESCORT_LAST_OOC_POINT && mLastWPIDReached != id)
+        GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_REACHED, nullptr, id);
 
+    mLastWPIDReached = id;
     mWPReached = true;
-    GetScript()->ProcessEventsFor(SMART_EVENT_WAYPOINT_REACHED, nullptr, mCurrentWPID, GetScript()->GetPathId());
-
-    if (HasEscortState(SMART_ESCORT_PAUSED))
-        me->StopMoving();
-    else if (HasEscortState(SMART_ESCORT_ESCORTING) && me->GetMotionMaster()->GetCurrentMovementGeneratorType() == WAYPOINT_MOTION_TYPE)
-    {
-        mWPReached = false;
-        if (mCurrentWPID == _path.nodes.size())
-            m_Ended = true;
-        else
-            SetRun(mRun);
-    }
 }
 
 void SmartAI::MovementInform(uint32 MovementType, uint32 Data)
 {
-    if (MovementType == POINT_MOTION_TYPE && Data == SMART_ESCORT_LAST_OOC_POINT)
+    if ((MovementType == POINT_MOTION_TYPE && Data == SMART_ESCORT_LAST_OOC_POINT) || MovementType == FOLLOW_MOTION_TYPE)
         me->ClearUnitState(UNIT_STATE_EVADE);
 
     GetScript()->ProcessEventsFor(SMART_EVENT_MOVEMENTINFORM, nullptr, MovementType, Data);
-    if (!HasEscortState(SMART_ESCORT_ESCORTING))
+    if (MovementType != POINT_MOTION_TYPE || !HasEscortState(SMART_ESCORT_ESCORTING))
         return;
-
-    if (MovementType == WAYPOINT_MOTION_TYPE || (MovementType == POINT_MOTION_TYPE && Data == SMART_ESCORT_LAST_OOC_POINT))
-        MovepointReached(Data);
+    MovepointReached(Data);
 }
 
 void SmartAI::EnterEvadeMode(EvadeReason /*why*/)
@@ -500,7 +452,6 @@ void SmartAI::EnterEvadeMode(EvadeReason /*why*/)
         me->GetMotionMaster()->MoveFollow(target, mFollowDist, mFollowAngle);
         // evade is not cleared in MoveFollow, so we can't keep it
         me->ClearUnitState(UNIT_STATE_EVADE);
-        GetScript()->OnReset();
     }
     else if (Unit* owner = me->GetCharmerOrOwner())
     {
@@ -510,8 +461,8 @@ void SmartAI::EnterEvadeMode(EvadeReason /*why*/)
     else
         me->GetMotionMaster()->MoveTargetedHome();
 
-    if (!me->HasUnitState(UNIT_STATE_EVADE))
-        GetScript()->OnReset();
+    if (!HasEscortState(SMART_ESCORT_ESCORTING)) //dont mess up escort movement after combat
+        SetRun(mRun);
 }
 
 void SmartAI::MoveInLineOfSight(Unit* who)
@@ -624,13 +575,24 @@ void SmartAI::EnterCombat(Unit* enemy)
         me->InterruptNonMeleeSpells(false); // must be before ProcessEvents
 
     GetScript()->ProcessEventsFor(SMART_EVENT_AGGRO, enemy);
+
+    if (!IsAIControlled())
+        return;
+    mLastOOCPos = me->GetPosition();
+    SetRun(mRun);
+    if (me->GetMotionMaster()->GetMotionSlotType(MOTION_SLOT_ACTIVE) == POINT_MOTION_TYPE)
+        me->GetMotionMaster()->MovementExpired();
 }
 
 void SmartAI::JustDied(Unit* killer)
 {
     GetScript()->ProcessEventsFor(SMART_EVENT_DEATH, killer);
     if (HasEscortState(SMART_ESCORT_ESCORTING))
+    {
         EndPath(true);
+        me->StopMoving();//force stop
+        me->GetMotionMaster()->MoveIdle();
+    }
 }
 
 void SmartAI::KilledUnit(Unit* victim)
@@ -645,26 +607,10 @@ void SmartAI::JustSummoned(Creature* creature)
 
 void SmartAI::AttackStart(Unit* who)
 {
-    // dont allow charmed npcs to act on their own
-    if (me->HasUnitFlag(UNIT_FLAG_PLAYER_CONTROLLED))
-    {
-        if (who && mCanAutoAttack)
-            me->Attack(who, true);
-        return;
-    }
-
     if (who && me->Attack(who, me->IsWithinMeleeRange(who)))
     {
         if (mCanCombatMove)
-        {
-            SetRun(mRun);
-
-            MovementGeneratorType type = me->GetMotionMaster()->GetMotionSlotType(MOTION_SLOT_ACTIVE);
-            if (type == WAYPOINT_MOTION_TYPE || type == POINT_MOTION_TYPE)
-                me->StopMoving();
-
             me->GetMotionMaster()->MoveChase(who);
-        }
     }
 }
 
@@ -832,7 +778,6 @@ void SmartAI::SetCombatMove(bool on)
 {
     if (mCanCombatMove == on)
         return;
-
     mCanCombatMove = on;
     if (!IsAIControlled())
         return;
@@ -849,9 +794,12 @@ void SmartAI::SetCombatMove(bool on)
         }
         else
         {
+            if (me->HasUnitState(UNIT_STATE_CONFUSED_MOVE | UNIT_STATE_FLEEING_MOVE))
+                return;
+
+            me->GetMotionMaster()->MovementExpired();
+            me->GetMotionMaster()->Clear(true);
             me->StopMoving();
-            if (me->GetMotionMaster()->GetCurrentMovementGeneratorType() == CHASE_MOTION_TYPE)
-                me->GetMotionMaster()->Clear(false);
             me->GetMotionMaster()->MoveIdle();
         }
     }
diff --git a/src/server/game/AI/SmartScripts/SmartAI.h b/src/server/game/AI/SmartScripts/SmartAI.h
index e0843048280..0fd453c787b 100644
--- a/src/server/game/AI/SmartScripts/SmartAI.h
+++ b/src/server/game/AI/SmartScripts/SmartAI.h
@@ -23,7 +23,8 @@
 #include "GameObjectAI.h"
 #include "Position.h"
 #include "SmartScript.h"
-#include "WaypointDefines.h"
+
+struct WayPoint;
 
 enum SmartEscortState
 {
@@ -42,7 +43,7 @@ enum SmartEscortVars
 class TC_GAME_API SmartAI : public CreatureAI
 {
     public:
-        ~SmartAI();
+        ~SmartAI(){ }
         explicit SmartAI(Creature* c);
 
         // Check whether we are currently permitted to make the creature take action
@@ -55,6 +56,7 @@ class TC_GAME_API SmartAI : public CreatureAI
         void StopPath(uint32 DespawnTime = 0, uint32 quest = 0, bool fail = false);
         void EndPath(bool fail = false);
         void ResumePath();
+        WayPoint* GetNextWayPoint();
         bool HasEscortState(uint32 uiEscortState) const { return (mEscortState & uiEscortState) != 0; }
         void AddEscortState(uint32 uiEscortState) { mEscortState |= uiEscortState; }
         void RemoveEscortState(uint32 uiEscortState) { mEscortState &= ~uiEscortState; }
@@ -207,13 +209,15 @@ class TC_GAME_API SmartAI : public CreatureAI
         void ReturnToLastOOCPos();
         void UpdatePath(const uint32 diff);
         SmartScript mScript;
+        WPPath* mWayPoints;
         uint32 mEscortState;
         uint32 mCurrentWPID;
+        uint32 mLastWPIDReached;
         bool mWPReached;
-        bool mOOCReached;
-        bool m_Ended;
         uint32 mWPPauseTimer;
-        uint32 mEscortNPCFlags;
+        WayPoint* mLastWP;
+        Position mLastOOCPos;//set on enter combat
+        uint32 GetWPCount() const { return mWayPoints ? uint32(mWayPoints->size()) : 0; }
         bool mCanRepeatPath;
         bool mRun;
         bool mEvadeDisabled;
@@ -223,7 +227,6 @@ class TC_GAME_API SmartAI : public CreatureAI
         uint32 mInvincibilityHpLevel;
         bool AssistPlayerInCombatAgainst(Unit* who);
 
-        WaypointPath _path;
         uint32 mDespawnTime;
         uint32 mRespawnTime;
         uint32 mDespawnState;
diff --git a/src/server/game/AI/SmartScripts/SmartScript.cpp b/src/server/game/AI/SmartScripts/SmartScript.cpp
index d22aae3ae0f..62d6ff2f881 100644
--- a/src/server/game/AI/SmartScripts/SmartScript.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScript.cpp
@@ -2533,6 +2533,64 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
             sGameEventMgr->StartEvent(eventId, true);
             break;
         }
+        case SMART_ACTION_START_CLOSEST_WAYPOINT:
+        {
+            uint32 waypoints[SMART_ACTION_PARAM_COUNT];
+            waypoints[0] = e.action.closestWaypointFromList.wp1;
+            waypoints[1] = e.action.closestWaypointFromList.wp2;
+            waypoints[2] = e.action.closestWaypointFromList.wp3;
+            waypoints[3] = e.action.closestWaypointFromList.wp4;
+            waypoints[4] = e.action.closestWaypointFromList.wp5;
+            waypoints[5] = e.action.closestWaypointFromList.wp6;
+            float distanceToClosest = std::numeric_limits<float>::max();
+            WayPoint* closestWp = nullptr;
+
+            ObjectList* targets = GetTargets(e, unit);
+            if (targets)
+            {
+                for (ObjectList::iterator itr = targets->begin(); itr != targets->end(); ++itr)
+                {
+                    if (Creature* target = (*itr)->ToCreature())
+                    {
+                        if (IsSmart(target))
+                        {
+                            for (uint8 i = 0; i < SMART_ACTION_PARAM_COUNT; i++)
+                            {
+                                if (!waypoints[i])
+                                    continue;
+
+                                WPPath* path = sSmartWaypointMgr->GetPath(waypoints[i]);
+
+                                if (!path || path->empty())
+                                    continue;
+
+                                WPPath::const_iterator itrWp = path->find(0);
+
+                                if (itrWp != path->end())
+                                {
+                                    if (WayPoint* wp = itrWp->second)
+                                    {
+                                        float distToThisPath = target->GetDistance(wp->x, wp->y, wp->z);
+
+                                        if (distToThisPath < distanceToClosest)
+                                        {
+                                            distanceToClosest = distToThisPath;
+                                            closestWp = wp;
+                                        }
+                                    }
+                                }
+                            }
+
+                            if (closestWp)
+                                CAST_AI(SmartAI, target->AI())->StartPath(false, closestWp->id, true);
+                        }
+                    }
+                }
+
+                delete targets;
+            }
+            break;
+        }
         case SMART_ACTION_RANDOM_SOUND:
         {
             std::vector<uint32> sounds;
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp b/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
index 3be794278bc..39e5759e3a7 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
@@ -41,6 +41,14 @@ void SmartWaypointMgr::LoadFromDB()
 {
     uint32 oldMSTime = getMSTime();
 
+    for (std::unordered_map<uint32, WPPath*>::iterator itr = waypoint_map.begin(); itr != waypoint_map.end(); ++itr)
+    {
+        for (WPPath::iterator pathItr = itr->second->begin(); pathItr != itr->second->end(); ++pathItr)
+            delete pathItr->second;
+
+        delete itr->second;
+    }
+
     waypoint_map.clear();
 
     WorldDatabasePreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_SEL_SMARTAI_WP);
@@ -68,10 +76,9 @@ void SmartWaypointMgr::LoadFromDB()
         y = fields[3].GetFloat();
         z = fields[4].GetFloat();
 
-        WPPath& path = waypoint_map[entry];
-
         if (last_entry != entry)
         {
+            waypoint_map[entry] = new WPPath();
             last_id = 1;
             count++;
         }
@@ -80,14 +87,7 @@ void SmartWaypointMgr::LoadFromDB()
             TC_LOG_ERROR("sql.sql", "SmartWaypointMgr::LoadFromDB: Path entry %u, unexpected point id %u, expected %u.", entry, id, last_id);
 
         last_id++;
-
-        WayPoint point;
-        point.id = id;
-        point.x = x;
-        point.y = y;
-        point.z = z;
-
-        path.push_back(std::move(point));
+        (*waypoint_map[entry])[id] = new WayPoint(id, x, y, z);
 
         last_entry = entry;
         total++;
@@ -97,6 +97,17 @@ void SmartWaypointMgr::LoadFromDB()
     TC_LOG_INFO("server.loading", ">> Loaded %u SmartAI waypoint paths (total %u waypoints) in %u ms", count, total, GetMSTimeDiffToNow(oldMSTime));
 }
 
+SmartWaypointMgr::~SmartWaypointMgr()
+{
+    for (std::unordered_map<uint32, WPPath*>::iterator itr = waypoint_map.begin(); itr != waypoint_map.end(); ++itr)
+    {
+        for (WPPath::iterator pathItr = itr->second->begin(); pathItr != itr->second->end(); ++pathItr)
+            delete pathItr->second;
+
+        delete itr->second;
+    }
+}
+
 SmartAIMgr* SmartAIMgr::instance()
 {
     static SmartAIMgr instance;
@@ -1240,8 +1251,7 @@ bool SmartAIMgr::IsEventValid(SmartScriptHolder& e)
             break;
         case SMART_ACTION_WP_START:
             {
-                WPPath const* path = sSmartWaypointMgr->GetPath(e.action.wpStart.pathID);
-                if (!path || path->empty())
+                if (!sSmartWaypointMgr->GetPath(e.action.wpStart.pathID))
                 {
                     TC_LOG_ERROR("sql.sql", "SmartAIMgr: Creature " SI64FMTD " Event %u Action %u uses non-existent WaypointPath id %u, skipped.", e.entryOrGuid, e.event_id, e.GetActionType(), e.action.wpStart.pathID);
                     return false;
@@ -1403,6 +1413,7 @@ bool SmartAIMgr::IsEventValid(SmartScriptHolder& e)
 
             break;
         }
+        case SMART_ACTION_START_CLOSEST_WAYPOINT:
         case SMART_ACTION_FOLLOW:
         case SMART_ACTION_SET_ORIENTATION:
         case SMART_ACTION_STORE_TARGET_LIST:
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.h b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
index cd8c6e6392a..8ced59ccc65 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.h
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
@@ -29,7 +29,13 @@ enum SpellEffIndex : uint8;
 
 struct WayPoint
 {
-    WayPoint() : id(0), x(0.0f), y(0.0f), z(0.0f) { }
+    WayPoint(uint32 _id, float _x, float _y, float _z)
+    {
+        id = _id;
+        x = _x;
+        y = _y;
+        z = _z;
+    }
 
     uint32 id;
     float x;
@@ -558,7 +564,7 @@ enum SMART_ACTION
     SMART_ACTION_REMOVE_POWER                       = 110,    // PowerType, newPower
     SMART_ACTION_GAME_EVENT_STOP                    = 111,    // GameEventId
     SMART_ACTION_GAME_EVENT_START                   = 112,    // GameEventId
-    // Not used                                     = 113,
+    SMART_ACTION_START_CLOSEST_WAYPOINT             = 113,    // wp1, wp2, wp3, wp4, wp5, wp6, wp7
     SMART_ACTION_MOVE_OFFSET                        = 114,
     SMART_ACTION_RANDOM_SOUND                       = 115,    // soundId1, soundId2, soundId3, soundId4, soundId5, onlySelf
     SMART_ACTION_SET_CORPSE_DELAY                   = 116,    // timer
@@ -1463,7 +1469,7 @@ struct SmartScriptHolder
     operator bool() const { return entryOrGuid != 0; }
 };
 
-typedef std::vector<WayPoint> WPPath;
+typedef std::unordered_map<uint32, WayPoint*> WPPath;
 
 typedef std::list<WorldObject*> ObjectList;
 
@@ -1495,23 +1501,22 @@ class TC_GAME_API SmartWaypointMgr
 {
     private:
         SmartWaypointMgr() { }
-        ~SmartWaypointMgr() { }
+        ~SmartWaypointMgr();
 
     public:
         static SmartWaypointMgr* instance();
 
         void LoadFromDB();
 
-        WPPath const* GetPath(uint32 id)
+        WPPath* GetPath(uint32 id)
         {
-            auto itr = waypoint_map.find(id);
-            if (itr != waypoint_map.end())
-                return &itr->second;
-            return nullptr;
+            if (waypoint_map.find(id) != waypoint_map.end())
+                return waypoint_map[id];
+            else return nullptr;
         }
 
     private:
-        std::unordered_map<uint32, WPPath> waypoint_map;
+        std::unordered_map<uint32, WPPath*> waypoint_map;
 };
 
 // all events for a single entry