*Implement m_AurasUpdateIterator. [8329] Author: VladimirMangos

--HG--
branch : trunk

src/game/SpellAuras.cpp

@@ -354,7 +354,7 @@ pAuraHandler AuraHandler[TOTAL_AURAS]=
 Aura::Aura(SpellEntry const* spellproto, uint32 effMask, int32 *currentBasePoints, Unit *target, WorldObject *source, Unit *caster, Item* castItem) :
 m_caster_guid(0), m_castItemGuid(castItem?castItem->GetGUID():0), m_target(target),
 m_timeCla(0), m_removeMode(AURA_REMOVE_BY_DEFAULT), m_AuraDRGroup(DIMINISHING_NONE),
-m_auraSlot(MAX_AURAS), m_auraLevel(1), m_procCharges(0), m_stackAmount(1), m_updated(false), m_isRemoved(false)
+m_auraSlot(MAX_AURAS), m_auraLevel(1), m_procCharges(0), m_stackAmount(1), m_isRemoved(false)
 {
     assert(target);
 

src/game/SpellAuras.h

@@ -102,9 +102,7 @@ class TRINITY_DLL_SPEC Aura
         bool IsDeathPersistent() const { return m_isDeathPersist; }
         bool IsRemovedOnShapeLost() const { return m_isRemovedOnShapeLost; }
         bool CanBeSaved() const;
-        bool IsUpdated() const { return m_updated; }
         bool IsRemoved() const { return m_isRemoved; }
-        void SetUpdated(bool val) { m_updated = val; }
 
         bool IsPersistent() const;
         bool IsAreaAura() const;
@@ -163,7 +161,6 @@ class TRINITY_DLL_SPEC Aura
         bool m_positive:1;
         bool m_permanent:1;
         bool m_isRemoved:1;
-        bool m_updated:1;                                   // Prevent remove aura by stack if set
         bool m_isSingleTargetAura:1;                        // true if it's a single target spell and registered at caster - can change at spell steal for example
 
         bool IsVisible() const;

src/game/Unit.cpp

@@ -117,6 +117,7 @@ Unit::Unit()
     //m_removeAuraTimer = 4;
     //tmpAura = NULL;
 
+    m_AurasUpdateIterator = m_Auras.end();
     m_Visibility = VISIBILITY_ON;
 
     m_interruptMask = 0;
@@ -3358,36 +3359,16 @@ void Unit::_UpdateSpells( uint32 time )
         }
     }
 
-    // TODO: Find a better way to prevent crash when multiple auras are removed.
-    for (AuraMap::iterator i = m_Auras.begin(); i != m_Auras.end(); ++i)
-        i->second->SetUpdated(false);
-
-    for(AuraMap::iterator i = m_Auras.begin(); i != m_Auras.end();)
+    // update auras
+    // m_AurasUpdateIterator can be updated in inderect called code at aura remove to skip next planned to update but removed auras
+    for (m_AurasUpdateIterator = m_Auras.begin(); m_AurasUpdateIterator != m_Auras.end();)
     {
-        Aura *aur = i->second;
-
-        // prevent double update
-        if(aur->IsUpdated())
-        {
-            ++i;
-            continue;
-        }
-
-        aur->SetUpdated(true);
-
-        m_removedAurasCount = 0;
-        aur->Update( time );
-
-        // several auras can be deleted due to update
-        if(m_removedAurasCount)
-        {
-            m_removedAurasCount = 0;
-            i = m_Auras.begin();
-        }
-        else
-            ++i;
+        Aura* i_aura = m_AurasUpdateIterator->second;
+        ++m_AurasUpdateIterator;                            // need shift to next for allow update if need into aura update
+        i_aura->Update(time);
     }
 
+    // remove expired auras
     for(AuraMap::iterator i = m_Auras.begin(); i != m_Auras.end();)
     {
         if(i->second->IsExpired())
@@ -4262,10 +4243,15 @@ void Unit::RemoveAura(AuraMap::iterator &i, AuraRemoveMode mode)
 {
     Aura* Aur = i->second;
 
+    // if unit currently update aura list then make safe update iterator shift to next
+    if (m_AurasUpdateIterator == i)
+        ++m_AurasUpdateIterator;
+
     // some ShapeshiftBoosts at remove trigger removing other auras including parent Shapeshift aura
     // remove aura from list before to prevent deleting it before
     m_Auras.erase(i);
-    m_removedAurasCount += 1;
+
+    ++m_removedAurasCount;
 
     Aur->UnregisterSingleCastAura();
 

src/game/Unit.h

@@ -1846,6 +1846,7 @@ class TRINITY_DLL_SPEC Unit : public WorldObject
         DeathState m_deathState;
 
         AuraMap m_Auras;
+        AuraMap::iterator m_AurasUpdateIterator;
         uint32 m_removedAurasCount;
         int32 m_procDeep;