[9120] Implement option to use delay in ForcedDespawn for creature

Signed-off-by: NoFantasy <nofantasy@nf.no>

src/game/Creature.cpp

@@ -105,6 +105,12 @@ bool AssistDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
     return true;
 }
 
+bool ForcedDespawnDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
+{
+    m_owner.ForcedDespawn();
+    return true;
+}
+
 Creature::Creature() :
 Unit(), i_AI(NULL),
 lootForPickPocketed(false), lootForBody(false), m_groupLootTimer(0), lootingGroupLeaderGUID(0),
@@ -1294,9 +1300,19 @@ void Creature::Respawn()
     }
 }
 
-void Creature::ForcedDespawn()
+void Creature::ForcedDespawn(uint32 timeMSToDespawn)
 {
-    setDeathState(JUST_DIED);
+    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

@@ -538,7 +538,7 @@ class MANGOS_DLL_SPEC Creature : public Unit
         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;
@@ -660,4 +660,14 @@ 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/shared/revision_nr.h

@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "9119"
+ #define REVISION_NR "9120"
 #endif // __REVISION_NR_H__