From ffd85f9139119ec56a8a6f3add4ef4c0f047b838 Mon Sep 17 00:00:00 2001
From: Giacomo Pozzoni <giacomopoz@gmail.com>
Date: Thu, 6 Aug 2020 12:58:39 +0000
Subject: Scripts/Comamnds: Improve ".debug objectcount" command (#25208)

* Scripts/Comamnds: Improve ".debug objectcount" command

Include the top 5 most common creatures in the map

* Use C++ features to copy data

* Fix build warnings

* Update src/server/scripts/Commands/cs_debug.cpp

Co-authored-by: Shauren <shauren.trinity@gmail.com>

* Update src/server/scripts/Commands/cs_debug.cpp

Co-authored-by: Shauren <shauren.trinity@gmail.com>

* Update src/server/scripts/Commands/cs_debug.cpp

Co-authored-by: Shauren <shauren.trinity@gmail.com>

* Move CreatureCountWorker out of function and use template for unhandled cases

* Code cleanup

Co-authored-by: Shauren <shauren.trinity@gmail.com>
(cherry picked from commit bd5e832a648aadf1d1be94f913ea00b67398f249)
---
 src/server/scripts/Commands/cs_debug.cpp | 45 ++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

(limited to 'src/server/scripts/Commands')

diff --git a/src/server/scripts/Commands/cs_debug.cpp b/src/server/scripts/Commands/cs_debug.cpp
index 86400739bc7..7f1dc590e4c 100644
--- a/src/server/scripts/Commands/cs_debug.cpp
+++ b/src/server/scripts/Commands/cs_debug.cpp
@@ -1867,12 +1867,57 @@ public:
         return true;
     }
 
+    class CreatureCountWorker
+    {
+    public:
+        CreatureCountWorker() { }
+
+        void Visit(std::unordered_map<ObjectGuid, Creature*>& creatureMap)
+        {
+            for (auto const& p : creatureMap)
+            {
+                uint32& count = creatureIds[p.second->GetEntry()];
+                ++count;
+            }
+        }
+
+        template<class T>
+        void Visit(std::unordered_map<ObjectGuid, T*>&) { }
+
+        std::vector<std::pair<uint32, uint32>> GetTopCreatureCount(uint32 count)
+        {
+            auto comp = [](std::pair<uint32, uint32> const& a, std::pair<uint32, uint32> const& b)
+            {
+                return a.second > b.second;
+            };
+            std::set<std::pair<uint32, uint32>, decltype(comp)> set(creatureIds.begin(), creatureIds.end(), comp);
+
+            count = std::min(count, uint32(set.size()));
+            std::vector<std::pair<uint32, uint32>> result(count);
+            std::copy_n(set.begin(), count, result.begin());
+
+            return result;
+        }
+
+    private:
+        std::unordered_map<uint32, uint32> creatureIds;
+    };
+
     static void HandleDebugObjectCountMap(ChatHandler* handler, Map* map)
     {
         handler->PSendSysMessage("Map Id: %u Name: '%s' Instance Id: %u Creatures: " UI64FMTD " GameObjects: " UI64FMTD,
             map->GetId(), map->GetMapName(), map->GetInstanceId(),
             uint64(map->GetObjectsStore().Size<Creature>()),
             uint64(map->GetObjectsStore().Size<GameObject>()));
+
+        CreatureCountWorker worker;
+        TypeContainerVisitor<CreatureCountWorker, MapStoredObjectTypesContainer> visitor(worker);
+        visitor.Visit(map->GetObjectsStore());
+
+        handler->PSendSysMessage("Top Creatures count:");
+
+        for (auto&& p : worker.GetTopCreatureCount(5))
+            handler->PSendSysMessage("Entry: %u Count: %u", p.first, p.second);
     }
 
     static bool HandleDebugDummyCommand(ChatHandler* handler, CommandArgs* /*args*/)
-- 
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