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/AI/CoreAI/GuardAI.cpp

@@ -125,7 +125,7 @@ void GuardAI::UpdateAI(const uint32 /*diff*/)
 bool GuardAI::IsVisible(Unit *pl) const
 {
     return me->IsWithinDist(pl,sWorld.getFloatConfig(CONFIG_SIGHT_GUARDER))
-        && pl->isVisibleForOrDetect(me,true);
+        && me->canSeeOrDetect(pl);
 }
 
 void GuardAI::JustDied(Unit *killer)

src/server/game/AI/CoreAI/TotemAI.cpp

@@ -77,7 +77,7 @@ TotemAI::UpdateAI(const uint32 /*diff*/)
     // Search victim if no, not attackable, or out of range, or friendly (possible in case duel end)
     if (!victim ||
         !victim->isTargetableForAttack() || !me->IsWithinDistInMap(victim, max_range) ||
-        me->IsFriendlyTo(victim) || !victim->isVisibleForOrDetect(me,false))
+        me->IsFriendlyTo(victim) || !me->canSeeOrDetect(victim))
     {
         victim = NULL;
         Trinity::NearestAttackableUnitInObjectRangeCheck u_check(me, me, max_range);