Core:

- Redesigned stealth and invisibility handling
  - Implemented the handling of multiple stealth types
- Implemented fake inebriation
- The message deliverer no longer sends packets from a non-visible source
  - The server won't send that much garbage which just takes bandwith
  - It won't be possible to use cheats to detect invisible objects
- Removed a lot of checks for the Z-coord
  - Fixes visibility problems happening while flying
- Limited the grid activation range of creatures to use less resources
- Implemented Shroud of Death
- Implemented increased visibility range for active objects
- Removed visibility check at spellhit (only sanctuary effects should prevent it)
(And a lot of other changes...)

Closes issue 4208
Closes issue 3049
Closes issue 2097
Closes issue 2198
Closes issue 2384
Closes issue 2197
Closes issue 2319

--HG--
branch : trunk

src/server/game/Entities/Pet/Pet.cpp

@@ -506,7 +506,7 @@ void Pet::Update(uint32 diff)
         {
             // unsummon pet that lost owner
             Player* owner = GetOwner();
-            if (!owner || (!IsWithinDistInMap(owner, GetMap()->GetVisibilityDistance()) && !isPossessed()) || (isControlled() && !owner->GetPetGUID()))
+            if (!owner || (!IsWithinDistInMap(owner, GetMap()->GetVisibilityRange()) && !isPossessed()) || (isControlled() && !owner->GetPetGUID()))
             //if (!owner || (!IsWithinDistInMap(owner, GetMap()->GetVisibilityDistance()) && (owner->GetCharmGUID() && (owner->GetCharmGUID() != GetGUID()))) || (isControlled() && !owner->GetPetGUID()))
             {
                 Remove(PET_SAVE_NOT_IN_SLOT, true);