fix(Core/Pool): Fix degradation of pools over time (#19750)

src/server/game/Pools/PoolMgr.cpp

@@ -330,7 +330,7 @@ void PoolGroup<T>::SpawnObject(ActivePoolData& spawns, uint32 limit, uint32 trig
 
                 // Triggering object is marked as spawned at this time and can be also rolled (respawn case)
                 // so this need explicit check for this case
-                if (roll < 0 && (/*obj.guid == triggerFrom ||*/ !spawns.IsActiveObject<T>(obj.guid)))
+                if (roll < 0 && (obj.guid == triggerFrom || !spawns.IsActiveObject<T>(obj.guid)))
                 {
                     rolledObjects.push_back(obj);
                     break;
@@ -340,9 +340,9 @@ void PoolGroup<T>::SpawnObject(ActivePoolData& spawns, uint32 limit, uint32 trig
 
         if (!EqualChanced.empty() && rolledObjects.empty())
         {
-            std::copy_if(EqualChanced.begin(), EqualChanced.end(), std::back_inserter(rolledObjects), [/*triggerFrom, */&spawns](PoolObject const& object)
+            std::copy_if(EqualChanced.begin(), EqualChanced.end(), std::back_inserter(rolledObjects), [triggerFrom, &spawns](PoolObject const& object)
             {
-                 return /*object.guid == triggerFrom ||*/ !spawns.IsActiveObject<T>(object.guid);
+                 return object.guid == triggerFrom || !spawns.IsActiveObject<T>(object.guid);
             });
 
             Acore::Containers::RandomResize(rolledObjects, count);
@@ -527,16 +527,18 @@ void PoolGroup<Quest>::SpawnObject(ActivePoolData& spawns, uint32 limit, uint32
 
 // Method that does the respawn job on the specified creature
 template <>
-void PoolGroup<Creature>::ReSpawn1Object(PoolObject* /*obj*/)
+void PoolGroup<Creature>::ReSpawn1Object(PoolObject* obj)
 {
-    // Creature is still on map, nothing to do
+    Despawn1Object(obj->guid);
+    Spawn1Object(obj);
 }
 
 // Method that does the respawn job on the specified gameobject
 template <>
-void PoolGroup<GameObject>::ReSpawn1Object(PoolObject* /*obj*/)
+void PoolGroup<GameObject>::ReSpawn1Object(PoolObject* obj)
 {
-    // Gameobject is still on map, nothing to do
+    Despawn1Object(obj->guid);
+    Spawn1Object(obj);
 }
 
 // Nothing to do for a child Pool