Implement script hooks: OnDamge, OnHeal

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

@@ -568,6 +568,9 @@ uint32 Unit::DealDamage(Unit* victim, uint32 damage, CleanDamage const* cleanDam
     if (IsAIEnabled)
         GetAI()->DamageDealt(victim, damage, damagetype);
 
+    // Hook for OnDamage Event
+    sScriptMgr->OnDamage(this, victim, damage);
+
     if (victim->GetTypeId() == TYPEID_PLAYER && this != victim)
     {
         // Signal to pets that their owner was attacked
@@ -9588,6 +9591,9 @@ int32 Unit::DealHeal(Unit* victim, uint32 addhealth)
     if (addhealth)
         gain = victim->ModifyHealth(int32(addhealth));
 
+    // Hook for OnHeal Event
+    sScriptMgr->OnHeal(this, victim, gain);
+
     Unit* unit = this;
 
     if (GetTypeId() == TYPEID_UNIT && ToCreature()->IsTotem())

src/server/game/Scripting/ScriptMgr.cpp

@@ -1363,6 +1363,16 @@ void ScriptMgr::OnGroupDisband(Group* group)
 }
 
 // Unit
+void ScriptMgr::OnHeal(Unit* healer, Unit* reciever, uint32 gain)
+{
+    FOREACH_SCRIPT(UnitScript)->OnHeal(healer, reciever, uint32 gain);
+}
+
+void ScriptMgr::OnDamage(Unit* attacker, Unit* victim, uint32 damage)
+{
+    FOREACH_SCRIPT(UnitScript)->OnDamage(attacker, victim, uint32 damage);
+}
+
 void ScriptMgr::ModifyPeriodicDamageAurasTick(Unit* target, Unit* attacker, uint32& damage)
 {
     FOREACH_SCRIPT(UnitScript)->ModifyPeriodicDamageAurasTick(target, attacker, damage);

src/server/game/Scripting/ScriptMgr.h

@@ -396,6 +396,12 @@ class UnitScript : public ScriptObject
         UnitScript(const char* name, bool addToScripts = true);
 
     public:
+        // Called when a unit deals damage to another unit
+        virtual void OnHeal(Unit* /*healer*/, Unit* /*reciever*/, uint32 /*gain*/) { }
+
+        // Called when a unit deals damage to another unit
+        virtual void OnDamage(Unit* /*attacker*/, Unit* /*victim*/, uint32 /*damage*/) { }
+
         // Called when DoT's Tick Damage is being Dealt
         virtual void ModifyPeriodicDamageAurasTick(Unit* /*target*/, Unit* /*attacker*/, uint32& /*damage*/) { }
 
@@ -1054,6 +1060,8 @@ class ScriptMgr
 
     public: /* UnitScript */
 
+        void OnHeal(Unit* healer, Unit* reciever, uint32 gain);
+        void OnDamage(Unit* attacker, Unit* victim, uint32 damage);
         void ModifyPeriodicDamageAurasTick(Unit* target, Unit* attacker, uint32& damage);
         void ModifyMeleeDamage(Unit* target, Unit* attacker, uint32& damage);
         void ModifySpellDamageTaken(Unit* target, Unit* attacker, int32& damage);