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
2026-06-21 07:11:59 -04:00 · 2010-11-13 17:18:09 +01:00
parent 995408f0a9
commit bf888285aa
36 changed files with 780 additions and 791 deletions
@@ -1223,7 +1223,10 @@ WorldObject::WorldObject(): WorldLocation(),
 m_isWorldObject(false), m_name(""), m_isActive(false), m_zoneScript(NULL),
 m_transport(NULL), m_currMap(NULL), m_InstanceId(0),
 m_phaseMask(PHASEMASK_NORMAL), m_notifyflags(0), m_executed_notifies(0)
-{}
+{
+    m_serverSideVisibility.SetValue(SERVERSIDE_VISIBILITY_GHOST, GHOST_VISIBILITY_ALIVE | GHOST_VISIBILITY_GHOST);
+    m_serverSideVisibilityDetect.SetValue(SERVERSIDE_VISIBILITY_GHOST, GHOST_VISIBILITY_ALIVE);
+}

 void WorldObject::SetWorldObject(bool on)
 {
@@ -1608,6 +1611,239 @@ void WorldObject::MonsterWhisper(const char* text, uint64 receiver, bool IsBossW
    player->GetSession()->SendPacket(&data);
 }

+bool WorldObject::isValid() const
+{
+    if (!IsInWorld())
+        return false;
+
+    return true;
+}
+
+float WorldObject::GetGridActivationRange() const
+{
+    if (ToPlayer())
+        return GetMap()->GetVisibilityRange();
+    else if (ToCreature())
+        return ToCreature()->m_SightDistance;
+    else
+        return 0.0f;
+}
+
+float WorldObject::GetVisibilityRange() const
+{
+    if (isActiveObject() && !ToPlayer())
+        return MAX_VISIBILITY_DISTANCE;
+    else
+        return GetMap()->GetVisibilityRange();
+}
+
+float WorldObject::GetSightRange(const WorldObject* target) const
+{
+    if (ToUnit())
+    {
+        if (ToPlayer())
+        {
+            if (target && target->isActiveObject())
+                return MAX_VISIBILITY_DISTANCE;
+            else
+                return GetMap()->GetVisibilityRange();
+        }
+        else if (ToCreature())
+            return ToCreature()->m_SightDistance;
+        else
+            return SIGHT_RANGE_UNIT;
+    }
+
+    return 0.0f;
+}
+
+bool WorldObject::canSeeOrDetect(WorldObject const* obj, bool ignoreStealth, bool distanceCheck) const
+{
+    if (this == obj)
+        return true;
+
+    if (!obj->isValid())
+        return false;
+
+    if (GetMap() != obj->GetMap())
+        return false;
+
+    if (!InSamePhase(obj))
+        return false;
+
+    if (obj->isAlwaysVisibleFor(this))
+        return true;
+
+    if (canSeeAlways(obj))
+        return true;
+
+    bool corpseCheck = false;
+    bool corpseVisibility = false;
+    if (distanceCheck)
+    {
+        if (const Player* thisPlayer = ToPlayer())
+        {
+            if (thisPlayer->isDead() && thisPlayer->GetHealth() > 0 && // Cheap way to check for ghost state
+                !(obj->m_serverSideVisibility.GetValue(SERVERSIDE_VISIBILITY_GHOST) & m_serverSideVisibility.GetValue(SERVERSIDE_VISIBILITY_GHOST) & GHOST_VISIBILITY_GHOST))
+            {
+                if (Corpse* corpse = thisPlayer->GetCorpse())
+                {
+                    corpseCheck = true;
+                    if (corpse->IsWithinDist(thisPlayer, GetSightRange(obj), false))
+                        if (corpse->IsWithinDist(obj, GetSightRange(obj), false))
+                            corpseVisibility = true;
+                }
+            }
+        }
+
+        if (!corpseCheck && !IsWithinDist(obj, GetSightRange(obj), false))
+            return false;
+    }
+
+    // GM visibility off or hidden NPC
+    if (!obj->m_serverSideVisibility.GetValue(SERVERSIDE_VISIBILITY_GM))
+    {
+        // Stop checking other things for GMs
+        if (m_serverSideVisibilityDetect.GetValue(SERVERSIDE_VISIBILITY_GM))
+            return true;
+    }
+    else
+        return m_serverSideVisibilityDetect.GetValue(SERVERSIDE_VISIBILITY_GM) >= obj->m_serverSideVisibility.GetValue(SERVERSIDE_VISIBILITY_GM);
+
+    // Ghost players, Spirit Healers, and some other NPCs
+    if (!corpseVisibility && !(obj->m_serverSideVisibility.GetValue(SERVERSIDE_VISIBILITY_GHOST) & m_serverSideVisibilityDetect.GetValue(SERVERSIDE_VISIBILITY_GHOST)))
+    {
+        // Alive players can see dead players in some cases, but other objects can't do that
+        if (const Player* thisPlayer = ToPlayer())
+        {
+            if (const Player* objPlayer = obj->ToPlayer())
+            {
+                if (thisPlayer->GetTeam() != objPlayer->GetTeam() || !thisPlayer->IsGroupVisibleFor(objPlayer))
+                    return false;
+            }
+            else
+                return false;
+        }
+        else
+            return false;
+    }
+
+    if (!obj->isVisibleForInState(this))
+        return false;
+
+    if (!canDetect(obj, ignoreStealth))
+        return false;
+
+    return true;
+}
+
+bool WorldObject::canDetect(WorldObject const* obj, bool ignoreStealth) const
+{
+    const WorldObject* seer = this;
+
+    // Pets don't have detection, they use the detection of their masters
+    if (const Unit* thisUnit = ToUnit())
+        if (Unit* controller = thisUnit->GetCharmerOrOwner())
+            seer = controller;
+
+    if (obj->isAlwaysDetectableFor(seer))
+        return true;
+
+    if (!seer->canDetectInvisibilityOf(obj))
+        return false;
+
+    if (!ignoreStealth && !seer->canDetectStealthOf(obj))
+        return false;
+
+    return true;
+}
+
+bool WorldObject::canDetectInvisibilityOf(WorldObject const* obj) const
+{
+    uint32 mask = obj->m_invisibility.GetFlags() & m_invisibilityDetect.GetFlags();
+
+    // Check for not detected types
+    if (mask != obj->m_invisibility.GetFlags())
+        return false;
+
+    // It isn't possible in invisibility to detect something that can't detect the invisible object
+    // (it's at least true for spell: 66)
+    // It seems like that only Units are affected by this check (couldn't see arena doors with preparation invisibility)
+    if (obj->ToUnit())
+        if ((m_invisibility.GetFlags() & obj->m_invisibilityDetect.GetFlags()) != m_invisibility.GetFlags())
+            return false;
+
+    for (uint32 i = 0; i < TOTAL_INVISIBILITY_TYPES; ++i)
+    {
+        if (!(mask & (1 << i)))
+            continue;
+
+        int32 objInvisibilityValue = obj->m_invisibility.GetValue(InvisibilityType(i));
+        int32 ownInvisibilityDetectValue = m_invisibilityDetect.GetValue(InvisibilityType(i));
+
+        // Too low value to detect
+        if (ownInvisibilityDetectValue < objInvisibilityValue)
+            return false;
+    }
+
+    return true;
+}
+
+bool WorldObject::canDetectStealthOf(WorldObject const* obj) const
+{
+    // Combat reach is the minimal distance (both in front and behind),
+    //   and it is also used in the range calculation.
+    // One stealth point increases the visibility range by 0.3 yard.
+
+    if (!obj->m_stealth.GetFlags())
+        return true;
+
+    float distance = GetExactDist(obj);
+    float combatReach = 0.0f;
+
+    if (isType(TYPEMASK_UNIT))
+        combatReach = ((Unit*)this)->GetCombatReach();
+
+    if (distance < combatReach)
+        return true;
+
+    if (!HasInArc(M_PI, obj))
+        return false;
+
+    for (uint32 i = 0; i < TOTAL_STEALTH_TYPES; ++i)
+    {
+        if (!(obj->m_stealth.GetFlags() & (1 << i)))
+            continue;
+
+        if (isType(TYPEMASK_UNIT))
+            if (((Unit*)this)->HasAuraTypeWithMiscvalue(SPELL_AURA_DETECT_STEALTH, i))
+                return true;
+
+        // Starting points
+        int32 detectionValue = 30;
+
+        // Level difference: 5 point / level, starting from level 1.
+        // There may be spells for this and the starting points too, but
+        //   not in the DBCs of the client.
+        detectionValue += int32(getLevelForTarget(obj) - 1) * 5;
+
+        // Apply modifiers
+        detectionValue += m_stealthDetect.GetValue(StealthType(i));
+        detectionValue -= obj->m_stealth.GetValue(StealthType(i));
+
+        // Calculate max distance
+        float visibilityRange = float(detectionValue) * 0.3f + combatReach;
+
+        if (visibilityRange > MAX_PLAYER_STEALTH_DETECT_RANGE)
+            visibilityRange = MAX_PLAYER_STEALTH_DETECT_RANGE;
+
+        if (distance > visibilityRange)
+            return false;
+    }
+
+    return true;
+}
+
 void WorldObject::SendPlaySound(uint32 Sound, bool OnlySelf)
 {
    WorldPacket data(SMSG_PLAY_SOUND, 4);
@@ -1754,12 +1990,6 @@ void Unit::BuildHeartBeatMsg(WorldPacket *data) const
    BuildMovementPacket(data);
 }

-void WorldObject::SendMessageToSet(WorldPacket *data, bool /*fake*/)
-{
-    Trinity::MessageDistDeliverer notifier(this, data, GetMap()->GetVisibilityDistance());
-    VisitNearbyWorldObject(GetMap()->GetVisibilityDistance(), notifier);
-}
-
 void WorldObject::SendMessageToSetInRange(WorldPacket *data, float dist, bool /*bToSelf*/)
 {
    Trinity::MessageDistDeliverer notifier(this, data, dist);
@@ -1768,8 +1998,8 @@ void WorldObject::SendMessageToSetInRange(WorldPacket *data, float dist, bool /*

 void WorldObject::SendMessageToSet(WorldPacket *data, Player const* skipped_rcvr)
 {
-    Trinity::MessageDistDeliverer notifier(this, data, GetMap()->GetVisibilityDistance(), false, skipped_rcvr);
-    VisitNearbyWorldObject(GetMap()->GetVisibilityDistance(), notifier);
+    Trinity::MessageDistDeliverer notifier(this, data, GetVisibilityRange(), false, skipped_rcvr);
+    VisitNearbyWorldObject(GetVisibilityRange(), notifier);
 }

 void WorldObject::SendObjectDeSpawnAnim(uint64 guid)
@@ -2434,9 +2664,9 @@ void WorldObject::DestroyForNearbyPlayers()
        return;

    std::list<Player*> targets;
-    Trinity::AnyPlayerInObjectRangeCheck check(this, GetMap()->GetVisibilityDistance());
+    Trinity::AnyPlayerInObjectRangeCheck check(this, GetVisibilityRange());
    Trinity::PlayerListSearcher<Trinity::AnyPlayerInObjectRangeCheck> searcher(this, targets, check);
-    VisitNearbyWorldObject(GetMap()->GetVisibilityDistance(), searcher);
+    VisitNearbyWorldObject(GetVisibilityRange(), searcher);
    for (std::list<Player*>::const_iterator iter = targets.begin(); iter != targets.end(); ++iter)
    {
        Player *plr = (*iter);
@@ -2459,7 +2689,7 @@ void WorldObject::UpdateObjectVisibility(bool /*forced*/)
 {
    //updates object's visibility for nearby players
    Trinity::VisibleChangesNotifier notifier(*this);
-    VisitNearbyWorldObject(GetMap()->GetVisibilityDistance(), notifier);
+    VisitNearbyWorldObject(GetVisibilityRange(), notifier);
 }

 struct WorldObjectChangeAccumulator
@@ -2531,7 +2761,7 @@ void WorldObject::BuildUpdate(UpdateDataMapType& data_map)
    TypeContainerVisitor<WorldObjectChangeAccumulator, WorldTypeMapContainer > player_notifier(notifier);
    Map& map = *GetMap();
    //we must build packets for all visible players
-    cell.Visit(p, player_notifier, map, *this, map.GetVisibilityDistance());
+    cell.Visit(p, player_notifier, map, *this, GetVisibilityRange());

    ClearUpdateMask(false);
 }