Core/PacketIO: Handle CMSG_REQUEST_PET_INFO, so pet/vehicle/charm/possess bar shows after a client /reload (#7)

* Core/PacketIO: Handle CMSG_REQUEST_PET_INFO, so pet/vehicle/charm/possess bar shows after a client /reload

* Core/Handlers: added additional checks for PetSpellInitialize() call in HandleRequestPetInfoOpcode and apply codestyle standards

src/server/game/Handlers/MiscHandler.cpp

@@ -1482,14 +1482,6 @@ void WorldSession::HandleMoveSetCanFlyAckOpcode(WorldPacket& recvData)
     _player->m_unitMovedByMe->m_movementInfo.flags = movementInfo.GetMovementFlags();
 }
 
-void WorldSession::HandleRequestPetInfoOpcode(WorldPacket& /*recvData */)
-{
-    /*
-        TC_LOG_DEBUG("network", "WORLD: CMSG_REQUEST_PET_INFO");
-        recvData.hexlike();
-    */
-}
-
 void WorldSession::HandleSetTaxiBenchmarkOpcode(WorldPacket& recvData)
 {
     TC_LOG_DEBUG("network", "WORLD: CMSG_SET_TAXI_BENCHMARK_MODE");

src/server/game/Handlers/PetHandler.cpp

@@ -972,3 +972,27 @@ void WorldSession::SendPetAdded(int32 petSlot, int32 petNumber, int32 creatureID
 
     SendPacket(&data);
 }
+
+void WorldSession::HandleRequestPetInfoOpcode(WorldPacket& /*recvData*/)
+{
+    /* Handle the packet CMSG_REQUEST_PET_INFO - Send when player has a pet, and does /reload
+     * From: https://github.com/TrinityCore/TrinityCore/commit/6ebe1afeeccb847702c12e522bddaa7b5694dc38#comments
+     * This packet is also sent when
+     *     You're controlling a vehicle (Player::VehicleSpellInitialize)
+     *     You have a unit charmed (Player::CharmSpellInitialize)
+     *     You're possessing a unit (Player::PossessSpellInitialize)
+     */
+
+    if (_player->GetPet() && _player->CanControlPet())
+        _player->PetSpellInitialize();
+
+    if (Unit* charm = _player->GetCharm())
+    {
+        if (charm->HasUnitState(UNIT_STATE_POSSESSED))
+            _player->PossessSpellInitialize();
+        else if (charm->HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_PLAYER_CONTROLLED))
+            _player->VehicleSpellInitialize();
+        else
+            _player->CharmSpellInitialize();
+    }
+}