Core/Vehicle: Change vehicle accessories' phase according to the player on the vehicle (#23646)

* Core/Vehicle: Change vehicle accessories' phase according to the player on the vehicle

* Get the root vehicle to set the phase to all accessories.
Attempt to get the accessories to stay mounted on the vehicle.

* Fix the accessories to stay mounted on the vehicle

2 files changed, 19 insertions, 0 deletions

diff --git a/src/server/game/Entities/Creature/Creature.cpp b/src/server/game/Entities/Creature/Creature.cpp
index 096aea99f24..28d6f010e20 100644
--- a/src/server/game/Entities/Creature/Creature.cpp
+++ b/src/server/game/Entities/Creature/Creature.cpp
@@ -629,6 +629,24 @@ bool Creature::UpdateEntry(uint32 entry, CreatureData const* data /*= nullptr*/,
     return true;
 }
 
+void Creature::SetPhaseMask(uint32 newPhaseMask, bool update)
+{
+    if (newPhaseMask == GetPhaseMask())
+        return;
+
+    Unit::SetPhaseMask(newPhaseMask, false);
+
+    if (Vehicle* vehicle = GetVehicleKit())
+    {
+        for (auto seat = vehicle->Seats.begin(); seat != vehicle->Seats.end(); seat++)
+            if (Unit* passenger = ObjectAccessor::GetUnit(*this, seat->second.Passenger.Guid))
+                passenger->SetPhaseMask(newPhaseMask, update);
+    }
+
+    if (update)
+        UpdateObjectVisibility();
+}
+
 void Creature::Update(uint32 diff)
 {
     if (IsAIEnabled() && m_triggerJustAppeared && m_deathState != DEAD)
diff --git a/src/server/game/Entities/Creature/Creature.h b/src/server/game/Entities/Creature/Creature.h
index ed4b8fce669..db770589659 100644
--- a/src/server/game/Entities/Creature/Creature.h
+++ b/src/server/game/Entities/Creature/Creature.h
@@ -162,6 +162,7 @@ class TC_GAME_API Creature : public Unit, public GridObject<Creature>, public Ma
         bool HasSpell(uint32 spellID) const override;
 
         bool UpdateEntry(uint32 entry, CreatureData const* data = nullptr, bool updateLevel = true);
+        void SetPhaseMask(uint32 newPhaseMask, bool update) override;// overwrite Unit::SetPhaseMask
 
         bool UpdateStats(Stats stat) override;
         bool UpdateAllStats() override;