*Fix a typo that makes players can see invisible units.

*Update farsight target code. Only change seer when receive client request.

--HG--
branch : trunk

src/game/MiscHandler.cpp

@@ -1435,16 +1435,18 @@ void WorldSession::HandleFarSightOpcode( WorldPacket & recv_data )
     uint8 apply;
     recv_data >> apply;
 
-
     switch(apply)
     {
         case 0:
-            _player->SetSeer(_player);
             sLog.outDebug("Player %u set vision to self", _player->GetGUIDLow());
+            _player->SetSeer(_player);
             break;
         case 1:
-            _player->SetSeer(_player->GetFarsightTarget());
             sLog.outDebug("Added FarSight " I64FMT " to player %u", _player->GetFarSightGUID(), _player->GetGUIDLow());
+            if(WorldObject *target = _player->GetFarsightTarget())
+                _player->SetSeer(target);
+            else
+                sLog.outError("Player %s requests non-existing seer", _player->GetName());
             break;
         default:
             sLog.outDebug("Unhandled mode in CMSG_FAR_SIGHT: %u", apply);

src/game/Player.cpp

@@ -18566,7 +18566,7 @@ void Player::ReportedAfkBy(Player* reporter)
 bool Player::canSeeOrDetect(Unit const* u, bool detect, bool inVisibleList, bool is3dDistance) const
 {
     // Always can see self
-    if (m_mover == this)
+    if (m_mover == u)
         return true;
 
     // phased visibility (both must phased in same way)
@@ -20181,34 +20181,25 @@ void Player::StopCastingBindSight()
     }
 }
 
-void Player::SetSeer(WorldObject* target)
+void Player::CreateSeer(WorldObject* target)
 {
-    if(target == m_seer)
-        return;
-
-    sLog.outDebug("Player::SetSeer: Player %s set object %u (TypeId: %u) as seer.", GetName(), target->GetEntry(), target->GetTypeId());
-
-    if(target == this)
+    if(!target || target == this) // remove seer
     {
-        if(GetFarSightGUID())
-        {
-            SetFarSightGUID(0);
-            WorldPacket data(SMSG_CLEAR_FAR_SIGHT_IMMEDIATE, 0);
-            GetSession()->SendPacket(&data);
-        }
-
-        if(m_seer->isType(TYPEMASK_UNIT))
+        sLog.outDebug("Player::CreateSeer: Player %s remove seer", GetName());
+        SetUInt64Value(PLAYER_FARSIGHT, 0);
+        //WorldPacket data(SMSG_CLEAR_FAR_SIGHT_IMMEDIATE, 0);
+        //GetSession()->SendPacket(&data);
+        if(m_seer != this && m_seer->isType(TYPEMASK_UNIT))
             ((Unit*)m_seer)->RemovePlayerFromVision(this);
     }
-    else if(target->isType(TYPEMASK_SEER))
+    else
     {
+        sLog.outDebug("Player::CreateSeer: Player %s create seer %u (TypeId: %u).", GetName(), target->GetEntry(), target->GetTypeId());
         StopCastingBindSight();
-        SetFarSightGUID(target->GetGUID());
-
+        SetUInt64Value(PLAYER_FARSIGHT, target->GetGUID());
         if(target->isType(TYPEMASK_UNIT))
             ((Unit*)target)->AddPlayerToVision(this);
     }
-    m_seer = target;
 }
 
 bool Player::CanUseBattleGroundObject()

src/game/Player.h

@@ -2053,12 +2053,12 @@ class TRINITY_DLL_SPEC Player : public Unit
         void EnterVehicle(Vehicle *vehicle);
         void ExitVehicle(Vehicle *vehicle);
 
-        void SetMover(Unit* target) { SetSeer(target); m_mover = target; }
-        void SetSeer(WorldObject *target);
+        void SetMover(Unit* target) { CreateSeer(target); m_mover = target; }
+        void CreateSeer(WorldObject *target);
+        void SetSeer(WorldObject *target) { m_seer = target; }
         void StopCastingCharm() { Uncharm(); }
         void StopCastingBindSight();
         uint64 GetFarSightGUID() const { return GetUInt64Value(PLAYER_FARSIGHT); }
-        void SetFarSightGUID(uint64 guid) { SetUInt64Value(PLAYER_FARSIGHT, guid); }
         WorldObject* GetFarsightTarget() const;
         // Controls if vision is currently on farsight object, updated in FAR_SIGHT opcode
         void SetFarsightVision(bool apply) { m_farsightVision = apply; }

src/game/SpellAuras.cpp

@@ -1982,7 +1982,7 @@ void Aura::HandleAuraDummy(bool apply, bool Real)
         if( m_target->GetTypeId() == TYPEID_PLAYER && GetSpellProto()->Effect[0]==72 )
         {
             // spells with SpellEffect=72 and aura=4: 6196, 6197, 21171, 21425
-            ((Player*)m_target)->SetSeer(m_target);
+            ((Player*)m_target)->CreateSeer(NULL);
             return;
         }
 
@@ -2907,17 +2907,12 @@ void Aura::HandleBindSight(bool apply, bool Real)
     if(!caster || caster->GetTypeId() != TYPEID_PLAYER)
         return;
 
-    ((Player*)caster)->SetSeer(apply ? m_target : caster);
+    ((Player*)caster)->CreateSeer(apply ? m_target : NULL);
 }
 
 void Aura::HandleFarSight(bool apply, bool Real)
 {
     //Handled by client
-    /*Unit* caster = GetCaster();
-    if(!caster || caster->GetTypeId() != TYPEID_PLAYER)
-        return;
-
-    ((Player*)caster)->SetFarSightGUID(apply ? m_target->GetGUID() : 0);*/
 }
 
 void Aura::HandleAuraTrackCreatures(bool apply, bool Real)

src/game/SpellEffects.cpp

@@ -3704,7 +3704,7 @@ 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)->SetSeer(dynObj);
+    ((Player*)m_caster)->CreateSeer(dynObj);
     //((Player*)m_caster)->UpdateVisibilityOf(dynObj);
 }