From e1598fa1d64b46fc53607182898fae2da172957b Mon Sep 17 00:00:00 2001
From: AlιAѕѕaѕѕιN <AilSynthax@gmail.com>
Date: Wed, 28 Aug 2019 10:33:41 +0430
Subject: [3.3.5] Fix spell_area not checking for zoneID for quests (#23719)

* Fix spell_area not checking for zoneID for quests

* Addendum to bdffe0a4a641414fe26c9b75b00f8e70ff0f1cb8

* Fix spell_area handle same spell with the same quests

Also fix not checking for quest_end at all.

* Addendum to 2d6b0545e3762b3a25005726d4093cf4a7945a8d

* Better commenting for 7a50189de3104f000d8b31fa6c415bb69cf1a3e7

* Addendum to 2d6b0545e3762b3a25005726d4093cf4a7945a8d

(cherry picked from commit 92d83c3c2eaba3f5b58dc98472318872f3a54706)
---
 src/server/game/Entities/Player/Player.cpp | 45 ++++++++++++++++++++++++------
 1 file changed, 37 insertions(+), 8 deletions(-)

(limited to 'src/server/game/Entities/Player')

diff --git a/src/server/game/Entities/Player/Player.cpp b/src/server/game/Entities/Player/Player.cpp
index c53bb8a693c..23f919da9c0 100644
--- a/src/server/game/Entities/Player/Player.cpp
+++ b/src/server/game/Entities/Player/Player.cpp
@@ -16535,21 +16535,50 @@ void Player::RemoveRewardedQuest(uint32 questId, bool update /*= true*/)
 
 void Player::SendQuestUpdate(uint32 questId)
 {
-    uint32 zone = 0, area = 0;
-    GetZoneAndAreaId(zone, area);
-
-    SpellAreaForQuestAreaMapBounds saBounds = sSpellMgr->GetSpellAreaForQuestAreaMapBounds(area, questId);
+    SpellAreaForQuestMapBounds saBounds = sSpellMgr->GetSpellAreaForQuestMapBounds(questId);
 
     if (saBounds.first != saBounds.second)
     {
-        for (SpellAreaForQuestAreaMap::const_iterator itr = saBounds.first; itr != saBounds.second; ++itr)
+        std::set<uint32> aurasToRemove, aurasToCast;
+        uint32 zone = 0, area = 0;
+        GetZoneAndAreaId(zone, area);
+
+        for (SpellAreaForQuestMap::const_iterator itr = saBounds.first; itr != saBounds.second; ++itr)
         {
             if (itr->second->flags & SPELL_AREA_FLAG_AUTOREMOVE && !itr->second->IsFitToRequirements(this, zone, area))
-                RemoveAurasDueToSpell(itr->second->spellId);
+                aurasToRemove.insert(itr->second->spellId);
             else if (itr->second->flags & SPELL_AREA_FLAG_AUTOCAST && !(itr->second->flags & SPELL_AREA_FLAG_IGNORE_AUTOCAST_ON_QUEST_STATUS_CHANGE))
-                if (!HasAura(itr->second->spellId))
-                    CastSpell(this, itr->second->spellId, true);
+                aurasToCast.insert(itr->second->spellId);
+        }
+
+        // Auras matching the requirements will be inside the aurasToCast container.
+        // Auras not matching the requirements may prevent using auras matching the requirements.
+        // aurasToCast will erase conflicting auras in aurasToRemove container to handle spells used by multiple quests.
+
+        for (auto itr = aurasToRemove.begin(); itr != aurasToRemove.end();)
+        {
+            bool auraRemoved = false;
+
+            for (const auto i : aurasToCast)
+            {
+                if (*itr == i)
+                {
+                    itr = aurasToRemove.erase(itr);
+                    auraRemoved = true;
+                    break;
+                }
+            }
+
+            if (!auraRemoved)
+                ++itr;
         }
+
+        for (auto spellId : aurasToCast)
+            if (!HasAura(spellId))
+                CastSpell(this, spellId, true);
+
+        for (auto spellId : aurasToRemove)
+            RemoveAurasDueToSpell(spellId);
     }
 
     UpdateVisibleGameobjectsOrSpellClicks();
-- 
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