Core/Movement: Use SetWalk(true/false) instead of AddUnit/RemoveUnit.

src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/hyjalAI.cpp

@@ -492,7 +492,7 @@ void hyjalAI::SummonCreature(uint32 entry, float Base[4][3])
         // Increment Enemy Count to be used in World States and instance script
         ++EnemyCount;
 
-        creature->RemoveUnitMovementFlag(MOVEMENTFLAG_WALKING);
+        creature->SetWalk(false);
         creature->setActive(true);
         switch (entry)
         {
@@ -1014,7 +1014,7 @@ void hyjalAI::WaypointReached(uint32 i)
                 if ((*itr) && (*itr)->isAlive() && (*itr) != me && (*itr)->GetEntry() != JAINA)
                 {
                     if (!(*itr)->IsWithinDist(me, 60))
-                        (*itr)->RemoveUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                        (*itr)->SetWalk(false);
                     float x, y, z;
                     (*itr)->SetDefaultMovementType(IDLE_MOTION_TYPE);
                     (*itr)->GetMotionMaster()->Initialize();

src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/culling_of_stratholme.cpp

@@ -591,11 +591,11 @@ public:
                         }
                         //After waypoint 0
                         case 1:
-                            me->RemoveUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                            me->SetWalk(false);
                             if (Unit* pUther = me->SummonCreature(NPC_UTHER, 1794.357f, 1272.183f, 140.558f, 1.37f, TEMPSUMMON_DEAD_DESPAWN, 180000))
                             {
                                 uiUtherGUID = pUther->GetGUID();
-                                pUther->RemoveUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                                pUther->SetWalk(false);
                                 pUther->GetMotionMaster()->MovePoint(0, 1897.018f, 1287.487f, 143.481f);
                                 pUther->SetTarget(me->GetGUID());
                                 me->SetTarget(uiUtherGUID);
@@ -680,7 +680,7 @@ public:
                         case 17:
                             if (Creature* pUther = Unit::GetCreature(*me, uiUtherGUID))
                             {
-                                pUther->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                                pUther->SetWalk(true);
                                 pUther->GetMotionMaster()->MovePoint(0, 1794.357f, 1272.183f, 140.558f);
                             }
                             JumpToNextStep(1000);
@@ -689,7 +689,7 @@ public:
                             if (Creature* pJaina = Unit::GetCreature(*me, uiJainaGUID))
                             {
                                 me->SetTarget(uiJainaGUID);
-                                pJaina->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                                pJaina->SetWalk(true);
                                 pJaina->GetMotionMaster()->MovePoint(0, 1794.357f, 1272.183f, 140.558f);
                             }
                             JumpToNextStep(1000);
@@ -755,7 +755,7 @@ public:
                             if (Creature* pCityman = Unit::GetCreature(*me, uiCitymenGUID[0]))
                             {
                                 pCityman->SetTarget(me->GetGUID());
-                                pCityman->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                                pCityman->SetWalk(true);
                                 pCityman->GetMotionMaster()->MovePoint(0, 2088.625f, 1279.191f, 140.743f);
                             }
                             JumpToNextStep(2000);
@@ -929,7 +929,7 @@ public:
                                 if (Unit* pBoss = me->SummonCreature(uiBossID, 2232.19f, 1331.933f, 126.662f, 3.15f, TEMPSUMMON_TIMED_OR_DEAD_DESPAWN, 900000))
                                 {
                                     uiBossGUID = pBoss->GetGUID();
-                                    pBoss->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                                    pBoss->SetWalk(true);
                                     pBoss->GetMotionMaster()->MovePoint(0, 2194.110f, 1332.00f, 130.00f);
                                 }
                             }

src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/old_hillsbrad.cpp

@@ -401,7 +401,7 @@ public:
                     SetRun();
                     break;
                 case 91:
-                    me->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                    me->SetWalk(true);
                     SetRun(false);
                     break;
                 case 93:

src/server/scripts/Kalimdor/ZulFarrak/instance_zulfarrak.cpp

@@ -301,7 +301,7 @@ public:
            {
                if (npc->isAlive())
                {
-                    npc->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                    npc->SetWalk(true);
                     npc->GetMotionMaster()->MovePoint(1, x, y, z);
                     npc->SetHomePosition(x, y, z, o);
                }

src/server/scripts/Kalimdor/ZulFarrak/zulfarrak.cpp

@@ -204,7 +204,7 @@ void initBlyCrewMember(InstanceScript* instance, uint32 entry, float x, float y,
    if (Creature* crew = instance->instance->GetCreature(instance->GetData64(entry)))
    {
         crew->SetReactState(REACT_AGGRESSIVE);
-        crew->AddUnitMovementFlag(MOVEMENTFLAG_WALKING);
+        crew->SetWalk(true);
         crew->SetHomePosition(x, y, z, 0);
         crew->GetMotionMaster()->MovePoint(1, x, y, z);
         crew->setFaction(FACTION_FREED);

src/server/scripts/Kalimdor/dustwallow_marsh.cpp

@@ -640,7 +640,7 @@ public:
             case 37:
                 DoScriptText(SAY_QUEST_COMPLETE, me, player);
                 me->SetSpeed(MOVE_RUN, 1.2f, true);
-                me->RemoveUnitMovementFlag(MOVEMENTFLAG_WALKING);
+                me->SetWalk(false);
                 if (player && player->GetQuestStatus(QUEST_STINKYS_ESCAPE_H))
                     player->GroupEventHappens(QUEST_STINKYS_ESCAPE_H, me);
                 if (player && player->GetQuestStatus(QUEST_STINKYS_ESCAPE_A))