*Add some vehicle ai functions.

--HG--
branch : trunk

src/game/CreatureAI.h

@@ -159,6 +159,9 @@ class TRINITY_DLL_SPEC CreatureAI : public UnitAI
 
         void SetGazeOn(Unit *target);
 
+        virtual void PassengerBoarded(Unit *who, int8 seatId) {}
+        virtual void PassengerLeft(Unit *who, int8 seatId) {}
+
     protected:
         bool _EnterEvadeMode();
 };

src/game/Unit.cpp

@@ -14555,12 +14555,18 @@ void Unit::EnterVehicle(Vehicle *vehicle, int8 seatId)
         if(m_Vehicle == vehicle)
         {
             if(seatId >= 0)
+            {
+                sLog.outDebug("EnterVehicle: %u leave vehicle %u seat %d and enter %d.", GetEntry(), m_Vehicle->GetEntry(), GetTransSeat(), seatId);
                 ChangeSeat(seatId);
+            }
             return;
         }
         else
+        {
+            sLog.outDebug("EnterVehicle: %u exit %u and enter %u.", GetEntry(), m_Vehicle->GetEntry(), vehicle->GetEntry());
             ExitVehicle();
         }
+    }
 
     if(GetTypeId() == TYPEID_PLAYER)
     {

src/game/Vehicle.cpp

@@ -300,7 +300,7 @@ bool Vehicle::AddPassenger(Unit *unit, int8 seatId)
         assert(!seat->second.passenger);
     }
 
-    sLog.outDebug("Unit %s enter vehicle entry %u id %u dbguid %u", unit->GetName(), GetEntry(), m_vehicleInfo->m_ID, GetDBTableGUIDLow());
+    sLog.outDebug("Unit %s enter vehicle entry %u id %u dbguid %u seat %d", unit->GetName(), GetEntry(), m_vehicleInfo->m_ID, GetDBTableGUIDLow(), (int32)seat->first);
 
     seat->second.passenger = unit;
     if(seat->second.seatInfo->IsUsable())
@@ -335,6 +335,9 @@ bool Vehicle::AddPassenger(Unit *unit, int8 seatId)
         GetMap()->CreatureRelocation(this, GetPositionX(), GetPositionY(), GetPositionZ(), GetOrientation());
     }
 
+    if(AI())
+        AI()->PassengerBoarded(unit, seat->first);
+
     //if(unit->GetTypeId() == TYPEID_PLAYER)
     //    ((Player*)unit)->SendTeleportAckMsg();
     //unit->SendMovementFlagUpdate();
@@ -372,6 +375,9 @@ void Vehicle::RemovePassenger(Unit *unit)
     if(unit->GetTypeId() == TYPEID_PLAYER && seat->first == 0 && seat->second.seatInfo->m_flags & 0x800)
         RemoveCharmedBy(unit);
 
+    if(AI())
+        AI()->PassengerLeft(unit, seat->first);
+
     // only for flyable vehicles?
     //CastSpell(this, 45472, true);                           // Parachute
 }

src/game/Vehicle.h

@@ -57,6 +57,7 @@ class TRINITY_DLL_SPEC Vehicle : public Creature
         int8 GetNextEmptySeat(int8 seatId, bool next) const;
         bool AddPassenger(Unit *passenger, int8 seatId = -1);
         void RemovePassenger(Unit *passenger);
+        void RemoveAllPassengers();
         void InstallAllAccessories();
         void Dismiss();
 
@@ -67,7 +68,6 @@ class TRINITY_DLL_SPEC Vehicle : public Creature
         VehicleEntry const *m_vehicleInfo;
         uint32 m_usableSeatNum;
 
-        void RemoveAllPassengers();
         void InstallAccessory(uint32 entry, int8 seatId);
 
     private: