重构网络管理，优化房间状态显示逻辑，添加断开连接功能，确保资源正确释放

online_game_tool.cpp

@@ -208,20 +208,11 @@ int main()
         if ((steamManager.isHost() || steamManager.isConnected()) && roomManager.getCurrentLobby().IsValid())
         {
             ImGui::Begin("房间状态");
-            if (!steamManager.isHost())
-            {
-                ImGui::Text("与主机延迟: %d ms", steamManager.getHostPing());
-            }
-            ImGui::Separator();
             ImGui::Text("用户列表:");
-            int columnCount = steamManager.isHost() ? 2 : 1;
-            if (ImGui::BeginTable("UserTable", columnCount, ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg))
+            if (ImGui::BeginTable("UserTable", 2, ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg))
             {
                 ImGui::TableSetupColumn("名称");
-                if (steamManager.isHost())
-                {
-                    ImGui::TableSetupColumn("延迟 (ms)");
-                }
+                ImGui::TableSetupColumn("延迟 (ms)");
                 ImGui::TableHeadersRow();
                 {
                     std::vector<CSteamID> members = roomManager.getLobbyMembers();
@@ -232,17 +223,17 @@ int main()
                         ImGui::TableNextColumn();
                         const char *name = SteamFriends()->GetFriendPersonaName(memberID);
                         ImGui::Text("%s", name);
-                        if (steamManager.isHost())
+                        ImGui::TableNextColumn();
+                        if (memberID == mySteamID)
                         {
-                            ImGui::TableNextColumn();
-                            if (memberID == mySteamID)
-                            {
-                                ImGui::Text("-");
-                            }
-                            else
+                            ImGui::Text("-");
+                        }
+                        else
+                        {
+                            int ping = 0;
+                            if (steamManager.isHost())
                             {
                                 // Find connection for this member
-                                int ping = 0;
                                 std::lock_guard<std::mutex> lockConn(connectionsMutex);
                                 for (const auto &conn : steamManager.getConnections())
                                 {
@@ -256,8 +247,13 @@ int main()
                                         }
                                     }
                                 }
-                                ImGui::Text("%d", ping);
                             }
+                            else
+                            {
+                                // Client shows ping to host
+                                ping = steamManager.getHostPing();
+                            }
+                            ImGui::Text("%d", ping);
                         }
                     }
                 }

steam/steam_networking_manager.cpp

@@ -129,6 +129,40 @@ bool SteamNetworkingManager::joinHost(uint64 hostID)
     }
 }
 
+void SteamNetworkingManager::disconnect()
+{
+    std::lock_guard<std::mutex> lock(connectionsMutex);
+    
+    // Close client connection
+    if (g_hConnection != k_HSteamNetConnection_Invalid)
+    {
+        m_pInterface->CloseConnection(g_hConnection, 0, nullptr, false);
+        g_hConnection = k_HSteamNetConnection_Invalid;
+    }
+    
+    // Close all host connections
+    for (auto conn : connections)
+    {
+        m_pInterface->CloseConnection(conn, 0, nullptr, false);
+    }
+    connections.clear();
+    
+    // Close listen socket
+    if (hListenSock != k_HSteamListenSocket_Invalid)
+    {
+        m_pInterface->CloseListenSocket(hListenSock);
+        hListenSock = k_HSteamListenSocket_Invalid;
+    }
+    
+    // Reset state
+    g_isHost = false;
+    g_isClient = false;
+    g_isConnected = false;
+    hostPing_ = 0;
+    
+    std::cout << "Disconnected from network" << std::endl;
+}
+
 void SteamNetworkingManager::setMessageHandlerDependencies(boost::asio::io_context &io_context, std::unique_ptr<TCPServer> &server, int &localPort)
 {
     io_context_ = &io_context;