Entities/Unit: Fix speed update packets if player is being moved by something else.

Closes #17184
Closes #17254

(cherry picked from commit 19fa504ff5a51ded47f516640fc57deb6793547a)

2 files changed, 19 insertions, 4 deletions

diff --git a/src/server/game/Entities/Unit/Unit.cpp b/src/server/game/Entities/Unit/Unit.cpp
index 4328af96d90..c53389d89a2 100644
--- a/src/server/game/Entities/Unit/Unit.cpp
+++ b/src/server/game/Entities/Unit/Unit.cpp
@@ -10024,20 +10024,20 @@ void Unit::SetSpeedRate(UnitMoveType mtype, float rate)
                 pet->SetSpeedRate(mtype, m_speed_rate[mtype]);
     }
 
-    if (GetTypeId() == TYPEID_PLAYER && ToPlayer()->m_mover->GetTypeId() == TYPEID_PLAYER)
+    if (Player* playerMover = GetPlayerMover()) // unit controlled by a player.
     {
         // Send notification to self
         WorldPackets::Movement::MoveSetSpeed selfpacket(moveTypeToOpcode[mtype][1]);
         selfpacket.MoverGUID = GetGUID();
         selfpacket.SequenceIndex = m_movementCounter++;
         selfpacket.Speed = GetSpeed(mtype);
-        ToPlayer()->GetSession()->SendPacket(selfpacket.Write());
+        playerMover->GetSession()->SendPacket(selfpacket.Write());
 
         // Send notification to other players
         WorldPackets::Movement::MoveUpdateSpeed packet(moveTypeToOpcode[mtype][2]);
         packet.movementInfo = &m_movementInfo;
         packet.Speed = GetSpeed(mtype);
-        SendMessageToSet(packet.Write(), false);
+        playerMover->SendMessageToSet(packet.Write(), false);
     }
     else
     {
@@ -11610,6 +11610,20 @@ void CharmInfo::SetSpellAutocast(SpellInfo const* spellInfo, bool state)
     }
 }
 
+Unit* Unit::GetMover() const
+{
+    if (Player const* player = ToPlayer())
+        return player->m_mover;
+    return nullptr;
+}
+
+Player* Unit::GetPlayerMover() const
+{
+    if (Unit* mover = GetMover())
+        return mover->ToPlayer();
+    return nullptr;
+}
+
 bool Unit::isFrozen() const
 {
     return HasAuraState(AURA_STATE_FROZEN);
diff --git a/src/server/game/Entities/Unit/Unit.h b/src/server/game/Entities/Unit/Unit.h
index 415c46afa5d..3a7d25c9ef5 100644
--- a/src/server/game/Entities/Unit/Unit.h
+++ b/src/server/game/Entities/Unit/Unit.h
@@ -1751,7 +1751,8 @@ class TC_GAME_API Unit : public WorldObject
         CharmInfo* InitCharmInfo();
         void DeleteCharmInfo();
         void UpdateCharmAI();
-        //Player* GetMoverSource() const;
+        Unit* GetMover() const;
+        Player* GetPlayerMover() const;
         Player* m_movedPlayer;
         SharedVisionList const& GetSharedVisionList() { return m_sharedVision; }
         void AddPlayerToVision(Player* player);