Core/Movement: converted SMSG_MOVE_KNOCK_BACK to packet class

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

@@ -41,6 +41,7 @@
 #include "LootMgr.h"
 #include "MotionMaster.h"
 #include "MovementGenerator.h"
+#include "MovementPackets.h"
 #include "MovementPacketBuilder.h"
 #include "MovementStructures.h"
 #include "MoveSpline.h"
@@ -12739,38 +12740,13 @@ void Unit::UpdateObjectVisibility(bool forced)
 
 void Unit::SendMoveKnockBack(Player* player, float speedXY, float speedZ, float vcos, float vsin)
 {
-    ObjectGuid guid = GetGUID();
-    WorldPacket data(SMSG_MOVE_KNOCK_BACK, (1+8+4+4+4+4+4));
-    data.WriteBit(guid[0]);
-    data.WriteBit(guid[3]);
-    data.WriteBit(guid[6]);
-    data.WriteBit(guid[7]);
-    data.WriteBit(guid[2]);
-    data.WriteBit(guid[5]);
-    data.WriteBit(guid[1]);
-    data.WriteBit(guid[4]);
-
-    data.WriteByteSeq(guid[1]);
-
-    data << float(vsin);
-    data << uint32(0);
-
-    data.WriteByteSeq(guid[6]);
-    data.WriteByteSeq(guid[7]);
-
-    data << float(speedXY);
-
-    data.WriteByteSeq(guid[4]);
-    data.WriteByteSeq(guid[5]);
-    data.WriteByteSeq(guid[3]);
-
-    data << float(speedZ);
-    data << float(vcos);
-
-    data.WriteByteSeq(guid[2]);
-    data.WriteByteSeq(guid[0]);
-
-    player->SendDirectMessage(&data);
+    WorldPackets::Movement::MoveKnockBack moveKnockBack;
+    moveKnockBack.MoverGUID = GetGUID();
+    moveKnockBack.SequenceIndex = m_movementCounter++;
+    moveKnockBack.Speeds.HorzSpeed = speedXY;
+    moveKnockBack.Speeds.VertSpeed = speedZ;
+    moveKnockBack.Direction = Position(vcos, vsin);
+    player->SendDirectMessage(moveKnockBack.Write());
 }
 
 void Unit::KnockbackFrom(float x, float y, float speedXY, float speedZ)