*Make sure the a player can only have one viewpoint.

--HG--
branch : trunk

src/game/Player.cpp

@@ -1901,10 +1901,10 @@ void Player::RemoveFromWorld()
 
     if(m_uint32Values)
     {
-        if(GetUInt64Value(PLAYER_FARSIGHT))
+        if(WorldObject *viewpoint = GetViewpoint())
         {
-            sLog.outCrash("Player %s has viewpoint when removed from world", GetName());
+            sLog.outCrash("Player %s has viewpoint %u %u when removed from world", GetName(), viewpoint->GetEntry(), viewpoint->GetTypeId());
-            CreateViewpoint(NULL);
+            SetViewpoint(viewpoint, false);
         }
     }
 }
@@ -20088,16 +20088,33 @@ void Player::StopCastingBindSight()
     }
 }
 
-void Player::CreateViewpoint(WorldObject* target)
+void Player::SetViewpoint(WorldObject* target, bool apply)
 {
-    if(!target || target == this) // remove viewpoint
+    if(apply)
+    {
+        sLog.outDebug("Player::CreateViewpoint: Player %s create seer %u (TypeId: %u).", GetName(), target->GetEntry(), target->GetTypeId());
+
+        if(!AddUInt64Value(PLAYER_FARSIGHT, target->GetGUID()))
+        {
+            sLog.outCrash("Player::CreateViewpoint: Player %s cannot add new viewpoint!", GetName());
+            return;
+        }
+
+        if(target->isType(TYPEMASK_UNIT))
+            ((Unit*)target)->AddPlayerToVision(this);
+    }
+    else
     {
         sLog.outDebug("Player::CreateViewpoint: Player %s remove seer", GetName());
 
-        if(WorldObject *viewpoint = GetViewpoint())
+        if(!RemoveUInt64Value(PLAYER_FARSIGHT, target->GetGUID()))
-            if(viewpoint->isType(TYPEMASK_UNIT))
+        {
-                ((Unit*)viewpoint)->RemovePlayerFromVision(this);
+            sLog.outCrash("Player::CreateViewpoint: Player %s cannot remove current viewpoint!", GetName());
-        SetUInt64Value(PLAYER_FARSIGHT, 0);
+            return;
+        }
+
+        if(target->isType(TYPEMASK_UNIT))
+            ((Unit*)target)->RemovePlayerFromVision(this);
 
         //must immediately set seer back otherwise may crash
         m_seer = this;
@@ -20105,20 +20122,6 @@ void Player::CreateViewpoint(WorldObject* target)
         //WorldPacket data(SMSG_CLEAR_FAR_SIGHT_IMMEDIATE, 0);
         //GetSession()->SendPacket(&data);
     }
-    else
-    {
-        sLog.outDebug("Player::CreateViewpoint: Player %s create seer %u (TypeId: %u).", GetName(), target->GetEntry(), target->GetTypeId());
-
-        StopCastingBindSight();
-        if(!AddUInt64Value(PLAYER_FARSIGHT, target->GetGUID()))
-        {
-            sLog.outError("Player::CreateViewpoint: Player %s cannot remove current viewpoint!", GetName());
-            return;
-        }
-
-        if(target->isType(TYPEMASK_UNIT))
-            ((Unit*)target)->AddPlayerToVision(this);
-    }
 }
 
 WorldObject* Player::GetViewpoint() const
@@ -20224,7 +20227,8 @@ void Player::EnterVehicle(Vehicle *vehicle)
 
     StopCastingCharm();
     StopCastingBindSight();
-    SetCharm(vehicle, true);                                      // charm
+    SetCharm(vehicle, true);
+    SetViewpoint(vehicle, true);
     SetMover(vehicle);
 
     SetClientControl(vehicle, 1);                           // redirect controls to vehicle
@@ -20264,6 +20268,7 @@ void Player::ExitVehicle(Vehicle *vehicle)
     vehicle->setFaction((GetTeam() == ALLIANCE) ? vehicle->GetCreatureInfo()->faction_A : vehicle->GetCreatureInfo()->faction_H);
 
     SetCharm(vehicle, false);
+    SetViewpoint(vehicle, false);
     SetMover(this);
 
     SetClientControl(vehicle, 0);

src/game/Player.h

@@ -1982,9 +1982,9 @@ class TRINITY_DLL_SPEC Player : public Unit
         void EnterVehicle(Vehicle *vehicle);
         void ExitVehicle(Vehicle *vehicle);
 
-        void SetMover(Unit* target) { CreateViewpoint(target); m_mover = target; }
+        void SetMover(Unit* target) { m_mover = target; }
         void SetSeer(WorldObject *target) { m_seer = target; }
-        void CreateViewpoint(WorldObject *target);
+        void SetViewpoint(WorldObject *target, bool apply);
         WorldObject* GetViewpoint() const;
         void StopCastingCharm();
         void StopCastingBindSight();

src/game/SpellAuras.cpp

@@ -2048,10 +2048,15 @@ void Aura::HandleAuraDummy(bool apply, bool Real)
     // AT REMOVE
     else
     {
-        if( m_target->GetTypeId() == TYPEID_PLAYER && GetSpellProto()->Effect[0]==72 )
+        if(GetSpellProto()->Effect[0]==72 )
         {
             // spells with SpellEffect=72 and aura=4: 6196, 6197, 21171, 21425
-            ((Player*)m_target)->CreateViewpoint(NULL);
+            if(DynamicObject* dynObj = m_target->GetDynObject(GetId(), 0))
+            {
+                if(m_target->GetTypeId() == TYPEID_PLAYER)
+                    ((Player*)m_target)->SetViewpoint(dynObj, false);
+                m_target->RemoveDynObject(GetId());
+            }
             return;
         }
 
@@ -3007,7 +3012,7 @@ void Aura::HandleBindSight(bool apply, bool Real)
     if(!caster || caster->GetTypeId() != TYPEID_PLAYER)
         return;
 
-    ((Player*)caster)->CreateViewpoint(apply ? m_target : NULL);
+    ((Player*)caster)->SetViewpoint(m_target, apply);
 }
 
 void Aura::HandleFarSight(bool apply, bool Real)

src/game/SpellEffects.cpp

@@ -3620,7 +3620,7 @@ void Spell::EffectAddFarsight(uint32 i)
     dynObj->GetMap()->Add(dynObj); //grid will also be loaded
 
     // Need to update visibility of object for client to accept farsight guid
-    ((Player*)m_caster)->CreateViewpoint(dynObj);
+    ((Player*)m_caster)->SetViewpoint(dynObj, true);
     //((Player*)m_caster)->UpdateVisibilityOf(dynObj);
 }
 

src/game/Unit.cpp

@@ -13141,6 +13141,7 @@ void Unit::SetCharmedOrPossessedBy(Unit* charmer, bool possess)
         SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_UNK_24);
         ((Player*)charmer)->SetClientControl(this, 1);
         ((Player*)charmer)->SetMover(this);
+        ((Player*)charmer)->SetViewpoint(this, true);
         charmer->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_MOVE);
     }
     // Charm demon
@@ -13223,6 +13224,7 @@ void Unit::RemoveCharmedOrPossessedBy(Unit *charmer)
     {
         ((Player*)charmer)->SetClientControl(charmer, 1);
         ((Player*)charmer)->SetMover(charmer);
+        ((Player*)charmer)->SetViewpoint(this, false);
         charmer->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISABLE_MOVE);
     }
     // restore UNIT_FIELD_BYTES_0