feat(Core/BGQueue): rework queue announce (#6114)

src/server/game/Battlegrounds/BattlegroundSpamProtect.cpp

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
+ * Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
+ */
+
+#include "BattlegroundSpamProtect.h"
+#include "Battleground.h"
+#include "ObjectGuid.h"
+#include "Player.h"
+#include "World.h"
+
+namespace
+{
+    std::unordered_map<ObjectGuid /*player guid*/, uint32 /*time*/> _players;
+
+    void AddTime(ObjectGuid guid)
+    {
+        _players.insert_or_assign(guid, sWorld->GetGameTime());
+    }
+
+    uint32 GetTime(ObjectGuid guid)
+    {
+        auto const& itr = _players.find(guid);
+        if (itr != _players.end())
+        {
+            return itr->second;
+        }
+
+        return 0;
+    }
+
+    bool IsCorrectDelay(ObjectGuid guid)
+    {
+        // Skip if spam time < 30 secs (default)
+        return sWorld->GetGameTime() - GetTime(guid) >= sWorld->getIntConfig(CONFIG_BATTLEGROUND_QUEUE_ANNOUNCER_SPAM_DELAY);
+    }
+}
+
+BGSpamProtect* BGSpamProtect::instance()
+{
+    static BGSpamProtect instance;
+    return &instance;
+}
+
+bool BGSpamProtect::CanAnnounce(Player* player, Battleground* bg, uint32 minLevel, uint32 queueTotal)
+{
+    ObjectGuid guid = player->GetGUID();
+
+    // Check prev time
+    if (!IsCorrectDelay(guid))
+    {
+        return false;
+    }
+
+    if (bg)
+    {
+        // When limited, it announces only if there are at least CONFIG_BATTLEGROUND_QUEUE_ANNOUNCER_LIMIT_MIN_PLAYERS in queue
+        auto limitQueueMinLevel = sWorld->getIntConfig(CONFIG_BATTLEGROUND_QUEUE_ANNOUNCER_LIMIT_MIN_LEVEL);
+        if (limitQueueMinLevel && minLevel >= limitQueueMinLevel)
+        {
+            // limit only RBG for 80, WSG for lower levels
+            auto bgTypeToLimit = minLevel == 80 ? BATTLEGROUND_RB : BATTLEGROUND_WS;
+
+            if (bg->GetBgTypeID() == bgTypeToLimit && queueTotal < sWorld->getIntConfig(CONFIG_BATTLEGROUND_QUEUE_ANNOUNCER_LIMIT_MIN_PLAYERS))
+            {
+                return false;
+            }
+        }
+    }
+
+    AddTime(guid);
+    return true;
+}