Implement option to use delay in ForcedDespawn for creature, allow use delayed forced despawn also in EAI, by NoFantasy.

--HG--
branch : trunk

src/game/Creature.cpp

@@ -137,6 +137,12 @@ CreatureBaseStats const* CreatureBaseStats::GetBaseStats(uint32 level, uint8 uni
     return objmgr.GetCreatureBaseStats(level, unitClass);
 }
 
+bool ForcedDespawnDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
+{
+    m_owner.ForcedDespawn();
+    return true;
+}
+
 Creature::Creature() :
 Unit(),
 lootForPickPocketed(false), lootForBody(false), m_groupLootTimer(0), lootingGroupLeaderGUID(0),
@@ -1586,9 +1592,19 @@ void Creature::Respawn(bool force)
     SetToNotify();
 }
 
-void Creature::ForcedDespawn()
+void Creature::ForcedDespawn(uint32 timeMSToDespawn)
 {
+    if (timeMSToDespawn)
+    {
+        ForcedDespawnDelayEvent *pEvent = new ForcedDespawnDelayEvent(*this);
+
+        m_Events.AddEvent(pEvent, m_Events.CalculateTime(timeMSToDespawn));
+        return;
+    }
+
+    if (isAlive())
         setDeathState(JUST_DIED);
+
     RemoveCorpse();
     SetHealth(0);                                           // just for nice GM-mode view
 }

src/game/Creature.h

@@ -589,7 +589,7 @@ class TRINITY_DLL_SPEC Creature : public Unit, public GridObject<Creature>
         void RemoveCorpse();
         bool isDeadByDefault() const { return m_isDeadByDefault; };
 
-        void ForcedDespawn();
+        void ForcedDespawn(uint32 timeMSToDespawn = 0);
 
         time_t const& GetRespawnTime() const { return m_respawnTime; }
         time_t GetRespawnTimeEx() const;
@@ -710,6 +710,7 @@ class TRINITY_DLL_SPEC Creature : public Unit, public GridObject<Creature>
         CreatureData const* m_creatureData;
 
         uint16 m_LootMode;                                  // bitmask, default DEFAULT_LOOT_MODE, determines what loot will be lootable
+
     private:
         //WaypointMovementGenerator vars
         uint32 m_waypointID;
@@ -734,4 +735,14 @@ class AssistDelayEvent : public BasicEvent
         Unit&             m_owner;
 };
 
+class ForcedDespawnDelayEvent : public BasicEvent
+{
+    public:
+        ForcedDespawnDelayEvent(Creature& owner) : BasicEvent(), m_owner(owner) { }
+        bool Execute(uint64 e_time, uint32 p_time);
+
+    private:
+        Creature& m_owner;
+};
+
 #endif

src/game/CreatureEventAI.cpp

@@ -801,7 +801,7 @@ void CreatureEventAI::ProcessAction(CreatureEventAI_Action const& action, uint32
         }
         case ACTION_T_FORCE_DESPAWN:
         {
-            m_creature->ForcedDespawn();
+            m_creature->ForcedDespawn(action.forced_despawn.msDelay);
             break;
         }
         case ACTION_T_SET_INVINCIBILITY_HP_LEVEL:

src/game/CreatureEventAI.h

@@ -387,6 +387,11 @@ struct CreatureEventAI_Action
         {
             uint32 sheath;
         } set_sheath;
+        // ACTION_T_FORCE_DESPAWN                           = 41
+        struct
+        {
+            uint32 msDelay;
+        } forced_despawn;
         // ACTION_T_SET_INVINCIBILITY_HP_LEVEL              = 42
         struct
         {