feat(Core/Scripting): Add several UnitHooks (#12365)

src/server/game/AI/CreatureAI.cpp

@@ -25,6 +25,7 @@
 #include "MapReference.h"
 #include "Player.h"
 #include "Vehicle.h"
+#include "ScriptMgr.h"
 #include "Language.h"
 
 class PhasedRespawn : public BasicEvent
@@ -226,6 +227,8 @@ void CreatureAI::EnterEvadeMode(EvadeReason why)
         me->DespawnOnEvade();
         me->m_Events.AddEvent(new PhasedRespawn(*me), me->m_Events.CalculateTime(20000));
     }
+
+    sScriptMgr->OnUnitEnterEvadeMode(me, why);
 }
 
 /*void CreatureAI::AttackedBy(Unit* attacker)

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

@@ -13187,6 +13187,8 @@ void Unit::SetInCombatState(bool PvP, Unit* enemy, uint32 duration)
 
             if (creature->GetFormation())
                 creature->GetFormation()->MemberEngagingTarget(creature, enemy);
+
+            sScriptMgr->OnUnitEnterCombat(creature, enemy);
         }
 
         creature->RefreshSwimmingFlag();
@@ -17498,6 +17500,7 @@ void Unit::Kill(Unit* killer, Unit* victim, bool durabilityLoss, WeaponAttackTyp
         if (CreatureAI* ai = creature->AI())
         {
             ai->JustDied(killer);
+            sScriptMgr->OnUnitDeath(creature, killer);
         }
 
         if (TempSummon* summon = creature->ToTempSummon())

src/server/game/Scripting/ScriptDefines/UnitScript.cpp

@@ -218,3 +218,27 @@ void ScriptMgr::OnDisplayIdChange(Unit* unit, uint32 displayId)
         script->OnDisplayIdChange(unit, displayId);
     });
 }
+
+void ScriptMgr::OnUnitEnterEvadeMode(Unit* unit, uint8 evadeReason)
+{
+    ExecuteScript<UnitScript>([&](UnitScript* script)
+    {
+        script->OnUnitEnterEvadeMode(unit, evadeReason);
+    });
+}
+
+void ScriptMgr::OnUnitEnterCombat(Unit* unit, Unit* victim)
+{
+    ExecuteScript<UnitScript>([&](UnitScript* script)
+    {
+        script->OnUnitEnterCombat(unit, victim);
+    });
+}
+
+void ScriptMgr::OnUnitDeath(Unit* unit, Unit* killer)
+{
+    ExecuteScript<UnitScript>([&](UnitScript* script)
+    {
+        script->OnUnitDeath(unit, killer);
+    });
+}

src/server/game/Scripting/ScriptMgr.h

@@ -461,6 +461,10 @@ public:
     virtual void OnUnitUpdate(Unit* /*unit*/, uint32 /*diff*/) { }
 
     virtual void OnDisplayIdChange(Unit* /*unit*/, uint32 /*displayId*/) { }
+
+    virtual void OnUnitEnterEvadeMode(Unit* /*unit*/, uint8 /*evadeReason*/) { }
+    virtual void OnUnitEnterCombat(Unit* /*unit*/, Unit* /*victim*/) { }
+    virtual void OnUnitDeath(Unit* /*unit*/, Unit* /*killer*/) { }
 };
 
 class MovementHandlerScript : public ScriptObject
@@ -2403,6 +2407,9 @@ public: /* UnitScript */
     bool OnBuildValuesUpdate(Unit const* unit, uint8 updateType, ByteBuffer& fieldBuffer, Player* target, uint16 index);
     void OnUnitUpdate(Unit* unit, uint32 diff);
     void OnDisplayIdChange(Unit* unit, uint32 displayId);
+    void OnUnitEnterEvadeMode(Unit* unit, uint8 why);
+    void OnUnitEnterCombat(Unit* unit, Unit* victim);
+    void OnUnitDeath(Unit* unit, Unit* killer);
 
 public: /* MovementHandlerScript */
     void OnPlayerMove(Player* player, MovementInfo movementInfo, uint32 opcode);