*Fix a bug that creature ignore LOS in assistance case.

--HG--
branch : trunk

src/game/Creature.cpp

@@ -1646,15 +1646,17 @@ bool Creature::IsWithinSightDist(Unit const* u) const
     return IsWithinDistInMap(u, sWorld.getConfig(CONFIG_SIGHT_MONSTER));
 }
 
-bool Creature::canStartAttack(Unit const* who) const
+bool Creature::canStartAttack(Unit const* who, bool force) const
 {
-    if(isCivilian() || IsNeutralToAll()
+    if(isCivilian()
         || !who->isInAccessiblePlaceFor(this)
-        || !canFly() && GetDistanceZ(who) > CREATURE_Z_ATTACK_RANGE
-        || !IsWithinDistInMap(who, GetAttackDistance(who)))
+        || !canFly() && GetDistanceZ(who) > CREATURE_Z_ATTACK_RANGE)
         return false;
 
-    if(!canAttack(who, false))
+    if(!force && (IsNeutralToAll() || !IsWithinDistInMap(who, GetAttackDistance(who))))
+        return false;
+
+    if(!canAttack(who, force))
         return false;
 
     return IsWithinLOSInMap(who);

src/game/Creature.h

@@ -643,7 +643,7 @@ class TRINITY_DLL_SPEC Creature : public Unit
 
         bool canSeeOrDetect(Unit const* u, bool detect, bool inVisibleList = false, bool is3dDistance = true) const;
         bool IsWithinSightDist(Unit const* u) const;
-        bool canStartAttack(Unit const* u) const;
+        bool canStartAttack(Unit const* u, bool force) const;
         float GetAttackDistance(Unit const* pl) const;
 
         Unit* SelectNearestTarget(float dist = 0) const;

src/game/CreatureAI.cpp

@@ -100,11 +100,11 @@ void CreatureAI::MoveInLineOfSight(Unit *who)
     if(me->getVictim())
         return;
 
-    if(me->canStartAttack(who))
+    if(me->canStartAttack(who, false))
         AttackStart(who);
     else if(who->getVictim() && me->IsFriendlyTo(who)
         && me->IsWithinDistInMap(who, sWorld.getConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS))
-        && me->canAttack(who->getVictim()))
+        && me->canStartAttack(who->getVictim(), true))
         AttackStart(who->getVictim());
 }
 

src/game/CreatureEventAI.cpp

@@ -957,11 +957,12 @@ void CreatureEventAI::MoveInLineOfSight(Unit *who)
         }
     }
 
-    //if (m_creature->isCivilian() && m_creature->IsNeutralToAll())
-    //    return;
-
-    if(me->canStartAttack(who))
+    if(me->canStartAttack(who, false))
         AttackStart(who);
+    else if(who->getVictim() && me->IsFriendlyTo(who)
+        && me->IsWithinDistInMap(who, sWorld.getConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS))
+        && me->canStartAttack(who->getVictim(), true))
+        AttackStart(who->getVictim());
 }
 
 void CreatureEventAI::SpellHit(Unit* pUnit, const SpellEntry* pSpell)

src/game/GridNotifiers.h

@@ -997,7 +997,7 @@ namespace Trinity
                 }
                 else
                 {
-                    if(!m_creature->canStartAttack(u))
+                    if(!m_creature->canStartAttack(u, false))
                         return false;
                 }