Core/Combat: add new getter to count Players in the threatlist

Author: ccrs

src/server/game/Combat/ThreatManager.cpp

@@ -281,6 +281,17 @@ size_t ThreatManager::GetThreatListSize() const
     return _sortedThreatList->size();
 }
 
+uint32 ThreatManager::GetThreatListPlayerCount(bool includeOffline/* = false*/) const
+{
+    if (includeOffline)
+        return uint32(_sortedThreatList->size());
+    uint32 returnValue = 0;
+    for (ThreatReference const* ref : *_sortedThreatList)
+        if (ref->IsAvailable() && ref->GetOwner()->GetTypeId() == TYPEID_PLAYER)
+            ++returnValue;
+    return returnValue;
+}
+
 Trinity::IteratorPair<ThreatManager::ThreatListIterator, std::nullptr_t> ThreatManager::GetUnsortedThreatList() const
 {
     auto itr = _myThreatListEntries.begin();

src/server/game/Combat/ThreatManager.h

@@ -116,6 +116,7 @@ class TC_GAME_API ThreatManager
         // returns ThreatReference amount if a ref exists, 0.0f otherwise
         float GetThreat(Unit const* who, bool includeOffline = false) const;
         size_t GetThreatListSize() const;
+        uint32 GetThreatListPlayerCount(bool includeOffline = false) const;
         // fastest of the three threat list getters - gets the threat list in "arbitrary" order
         // iterators will invalidate on adding/removing entries from the threat list; slightly less finicky than GetSorted.
         Trinity::IteratorPair<ThreatListIterator, std::nullptr_t> GetUnsortedThreatList() const;