Core/Housing: activate Start Tutorial opcode at runtime

src/server/scripts/Custom/custom_playerscript.cpp

@@ -1,14 +1,43 @@
 /*
  * Copyright (C) WowCommunity Project
  *
- * This SourceCode is NOT free a software. Please hold everything Private
+ * This SourceCode is NOT a free software. Please hold everything Private
  * and read our Terms
  */
 
-#include "Player.h"
-
+#include "HousingTutorialPackets.h"
+#include "HousingTutorialSession.h"
+#include "Opcodes.h"
+#include "WorldPacket.h"
+#include "WorldSession.h"
+#include <utility>
 
+namespace
+{
+    void HandleHousingStartTutorialDirect(WorldSession* session, WorldPacket& rawPacket)
+    {
+        WorldPackets::Housing::HousingSvcsStartTutorial packet(std::move(rawPacket));
+        Housing::HandleStartTutorial(session, packet);
+    }
+}
 
 void AddCustom_playerscript()
 {
+    // The 12.1 Housing opcode is present in the client/core opcode table but is
+    // still marked STATUS_UNHANDLED there. Install the already implemented
+    // tutorial handler after OpcodeTable::Initialize() has completed.
+    //
+    // This keeps the compatibility change isolated from the generated/native
+    // opcode list while allowing the retail client button to reach the server.
+    if (!opcodeTable.IsValid(CMSG_HOUSING_SVCS_START_TUTORIAL))
+        return;
+
+    ClientOpcodeHandler* handler = const_cast<ClientOpcodeHandler*>(
+        opcodeTable[CMSG_HOUSING_SVCS_START_TUTORIAL]);
+    if (!handler)
+        return;
+
+    handler->Status = STATUS_LOGGEDIN;
+    handler->Call = &HandleHousingStartTutorialDirect;
+    handler->ProcessingPlace = PROCESS_THREADUNSAFE;
 }