fix(Core): fix instance portal not resurrecting when corpse is not spawned (#6106)

src/server/game/Entities/Player/Player.cpp

@@ -5484,6 +5484,18 @@ Corpse* Player::CreateCorpse()
     return corpse;
 }
 
+void Player::RemoveCorpse()
+{
+    if (GetCorpse())
+    {
+        GetCorpse()->RemoveFromWorld();
+    }
+
+    SQLTransaction trans = CharacterDatabase.BeginTransaction();
+    Corpse::DeleteFromDB(GetGUID(), trans);
+    CharacterDatabase.CommitTransaction(trans);
+}
+
 void Player::SpawnCorpseBones(bool triggerSave /*= true*/)
 {
     _corpseLocation.WorldRelocate();

src/server/game/Entities/Player/Player.h

@@ -2030,6 +2030,7 @@ public:
     [[nodiscard]] Corpse* GetCorpse() const;
     void SpawnCorpseBones(bool triggerSave = true);
     Corpse* CreateCorpse();
+    void RemoveCorpse();
     void KillPlayer();
     static void OfflineResurrect(ObjectGuid const guid, SQLTransaction& trans);
     bool HasCorpse() const { return _corpseLocation.GetMapId() != MAPID_INVALID; }

src/server/game/Handlers/MovementHandler.cpp

@@ -190,6 +190,17 @@ void WorldSession::HandleMoveWorldportAck()
         }
     }
 
+    if (!corpse && mEntry->IsDungeon())
+    {
+        // resurrect character upon entering instance when the corpse is not available anymore
+        if (GetPlayer()->GetCorpseLocation().GetMapId() == mEntry->MapID)
+        {
+            GetPlayer()->ResurrectPlayer(0.5f, false);
+            GetPlayer()->RemoveCorpse();
+        }
+    }
+
+
     bool allowMount = !mEntry->IsDungeon() || mEntry->IsBattlegroundOrArena();
     if (mInstance)
     {