Add HealReceived event for Creature AI to be used in scripts

--HG--
branch : trunk

src/server/game/AI/CreatureAI.h

@@ -103,6 +103,9 @@ class CreatureAI : public UnitAI
         // for attack reaction use AttackedBy called for not DOT damage in Unit::DealDamage also
         virtual void DamageTaken(Unit * /*done_by*/, uint32 & /*damage*/) {}
 
+        // Called when the creature receives heal
+        virtual void HealReceived(Unit* /*done_by*/, uint32& /*addhealth*/) {}
+
         // Called when the creature is killed
         virtual void JustDied(Unit *) {}
 

src/server/game/AI/EventAI/CreatureEventAI.h

@@ -608,6 +608,7 @@ class CreatureEventAI : public CreatureAI
         void MoveInLineOfSight(Unit *who);
         void SpellHit(Unit* pUnit, const SpellEntry* pSpell);
         void DamageTaken(Unit* done_by, uint32& damage);
+        void HealReceived(Unit* /*done_by*/, uint32& /*addhealth*/) {}
         void UpdateAI(const uint32 diff);
         void ReceiveEmote(Player* pPlayer, uint32 text_emote);
         static int Permissible(const Creature *);

src/server/game/Entities/Unit/Unit.cpp

@@ -9912,6 +9912,9 @@ int32 Unit::DealHeal(Unit *pVictim, uint32 addhealth)
 {
     int32 gain = 0;
 
+    if (pVictim->GetTypeId() == TYPEID_UNIT && pVictim->ToCreature()->IsAIEnabled)
+        pVictim->ToCreature()->AI()->HealReceived(this, addhealth);
+
     if (addhealth)
         gain = pVictim->ModifyHealth(int32(addhealth));