*More work on vehicle.

--HG--
branch : trunk

src/game/MovementHandler.cpp

@@ -500,11 +500,13 @@ void WorldSession::HandleChangeSeatsOnControlledVehicle(WorldPacket &recv_data)
     if(seat == GetPlayer()->GetTransSeat())
         return;
 
-    if(Vehicle *vehicle = GetPlayer()->m_Vehicle)
+    if(GetPlayer()->m_Vehicle)
     {
-        if(vehicle->HasEmptySeat(seat))
+        if(Vehicle *vehicle = GetPlayer()->m_Vehicle->HasEmptySeat(seat))
         {
-            vehicle->RemovePassenger(GetPlayer());
+            GetPlayer()->m_Vehicle->RemovePassenger(GetPlayer());
+            //If the player is going to a turret, the vehicle should be changed
+            GetPlayer()->m_Vehicle = vehicle;
             if(!vehicle->AddPassenger(GetPlayer(), seat))
             {
                 assert(false);

src/game/Vehicle.cpp

@@ -60,7 +60,15 @@ void Vehicle::RemoveFromWorld()
 void Vehicle::setDeathState(DeathState s)                       // overwrite virtual Creature::setDeathState and Unit::setDeathState
 {
     if(s == JUST_DIED)
+    {
+        for(SeatMap::iterator itr = m_Seats.begin(); itr != m_Seats.end(); ++itr)
+        {
+            if(Unit *passenger = itr->second.passenger)
+                if(passenger->GetTypeId() == TYPEID_UNIT && ((Creature*)passenger)->isVehicle())
+                    ((Vehicle*)passenger)->setDeathState(s);
+        }
         RemoveAllPassengers();
+    }
     Creature::setDeathState(s);
 }
 
@@ -100,9 +108,11 @@ bool Vehicle::Create(uint32 guidlow, Map *map, uint32 phaseMask, uint32 Entry, u
 void Vehicle::RemoveAllPassengers()
 {
     for(SeatMap::iterator itr = m_Seats.begin(); itr != m_Seats.end(); ++itr)
-        if(itr->second.passenger)
+        if(Unit *passenger = itr->second.passenger)
         {
-            itr->second.passenger->ExitVehicle();
+            if(passenger->GetTypeId() == TYPEID_UNIT && ((Creature*)passenger)->isVehicle())
+                ((Vehicle*)passenger)->RemoveAllPassengers();
+            passenger->ExitVehicle();
             assert(!itr->second.passenger);
         }
 }
@@ -132,6 +142,21 @@ void Vehicle::SetVehicleId(uint32 id)
     assert(!m_Seats.empty());
 }
 
+Vehicle* Vehicle::HasEmptySeat(int8 seatNum) const
+{
+    SeatMap::const_iterator seat = m_Seats.find(seatNum);
+    //No such seat
+    if(seat == m_Seats.end()) return NULL;
+    //Not occupied
+    if(!seat->second.passenger) return (Vehicle*)this;
+    //Check if turret is empty
+    if(seat->second.passenger->GetTypeId() == TYPEID_UNIT
+        && ((Creature*)seat->second.passenger)->isVehicle())
+        return ((Vehicle*)seat->second.passenger)->HasEmptySeat(seatNum);
+    //Occupied
+    return NULL;
+}
+
 bool Vehicle::AddPassenger(Unit *unit, int8 seatNum)
 {
     if(unit->m_Vehicle != this)
@@ -236,6 +261,12 @@ void Vehicle::RemovePassenger(Unit *unit)
 
 void Vehicle::Dismiss()
 {
+    for(SeatMap::iterator itr = m_Seats.begin(); itr != m_Seats.end(); ++itr)
+    {
+        if(Unit *passenger = itr->second.passenger)
+            if(passenger->GetTypeId() == TYPEID_UNIT && ((Creature*)passenger)->isVehicle())
+                ((Vehicle*)passenger)->Dismiss();
+    }
     RemoveAllPassengers();
     SendObjectDeSpawnAnim(GetGUID());
     CombatStop();

src/game/Vehicle.h

@@ -52,12 +52,7 @@ class Vehicle : public Creature
         VehicleEntry const *GetVehicleInfo() { return m_vehicleInfo; }
         void SetVehicleId(uint32 vehicleid);
 
-        bool HasEmptySeat(int8 seatNum) const
-        {
-            SeatMap::const_iterator seat = m_Seats.find(seatNum);
-            if(seat == m_Seats.end()) return false;
-            return !seat->second.passenger;
-        }
+        Vehicle* HasEmptySeat(int8 seatNum) const;
         bool AddPassenger(Unit *passenger, int8 seatNum = -1);
         void RemovePassenger(Unit *passenger);
         void Dismiss();