Merge pull request #3588 from Aestek/feature/improve-netplay-dialog

Improve netplay UX

Source/Core/DolphinWX/NetPlay/NetPlaySetupFrame.cpp

@@ -43,10 +43,11 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
     : wxFrame(parent, wxID_ANY, _("Dolphin NetPlay Setup")), m_game_list(game_list)
 {
   IniFile inifile;
-  inifile.Load(File::GetUserPath(D_CONFIG_IDX) + "Dolphin.ini");
+  inifile.Load(File::GetUserPath(F_DOLPHINCONFIG_IDX));
   IniFile::Section& netplay_section = *inifile.GetOrCreateSection("NetPlay");
 
   wxPanel* const panel = new wxPanel(this);
+  panel->Bind(wxEVT_CHAR_HOOK, &NetPlaySetupFrame::OnKeyDown, this);
 
   // top row
   wxBoxSizer* const trav_szr = new wxBoxSizer(wxHORIZONTAL);
@@ -57,7 +58,7 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
         panel, wxID_ANY, _("Connection Type:"), wxDefaultPosition, wxSize(100, -1));
 
     m_direct_traversal = new wxChoice(panel, wxID_ANY, wxDefaultPosition, wxSize(150, -1));
-    m_direct_traversal->Bind(wxEVT_CHOICE, &NetPlaySetupFrame::OnChoice, this);
+    m_direct_traversal->Bind(wxEVT_CHOICE, &NetPlaySetupFrame::OnDirectTraversalChoice, this);
     m_direct_traversal->Append(_("Direct Connection"));
     m_direct_traversal->Append(_("Traversal Server"));
 
@@ -90,11 +91,11 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
     netplay_section.Get("TraversalChoice", &travChoice, "direct");
     if (travChoice == "traversal")
     {
-      m_direct_traversal->Select(1);
+      m_direct_traversal->Select(TRAVERSAL_CHOICE);
     }
     else
     {
-      m_direct_traversal->Select(0);
+      m_direct_traversal->Select(DIRECT_CHOICE);
     }
 
     std::string centralPort;
@@ -106,19 +107,26 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
                                                             centralServer + ":" + centralPort);
   }
   // tabs
-  wxNotebook* const notebook = new wxNotebook(panel, wxID_ANY);
-  wxPanel* const connect_tab = new wxPanel(notebook, wxID_ANY);
-  notebook->AddPage(connect_tab, _("Connect"));
-  wxPanel* const host_tab = new wxPanel(notebook, wxID_ANY);
-  notebook->AddPage(host_tab, _("Host"));
+  m_notebook = new wxNotebook(panel, wxID_ANY);
+  wxPanel* const connect_tab = new wxPanel(m_notebook, wxID_ANY);
+  m_notebook->AddPage(connect_tab, _("Connect"));
+  wxPanel* const host_tab = new wxPanel(m_notebook, wxID_ANY);
+  m_notebook->AddPage(host_tab, _("Host"));
 
   // connect tab
   {
     m_ip_lbl = new wxStaticText(connect_tab, wxID_ANY, _("Host Code :"));
 
-    std::string address;
-    netplay_section.Get("HostCode", &address, "00000000");
-    m_connect_ip_text = new wxTextCtrl(connect_tab, wxID_ANY, StrToWxStr(address));
+    std::string last_hash_code;
+    netplay_section.Get("HostCode", &last_hash_code, "00000000");
+    std::string last_ip_address;
+    netplay_section.Get("Address", &last_ip_address, "127.0.0.1");
+    m_connect_ip_text = new wxTextCtrl(connect_tab, wxID_ANY, StrToWxStr(last_ip_address));
+    m_connect_hashcode_text = new wxTextCtrl(connect_tab, wxID_ANY, StrToWxStr(last_hash_code));
+
+    // Will be overridden by OnDirectTraversalChoice, but is necessary
+    // so that both inputs do not take up space
+    m_connect_hashcode_text->Hide();
 
     m_client_port_lbl = new wxStaticText(connect_tab, wxID_ANY, _("Port :"));
 
@@ -144,7 +152,8 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
 
     top_szr->Add(m_ip_lbl, 0, wxALIGN_CENTER_VERTICAL | wxRIGHT, 5);
     top_szr->Add(m_connect_ip_text, 3);
-    top_szr->Add(m_client_port_lbl, 0, wxALIGN_CENTER_VERTICAL | wxRIGHT | wxLEFT, 5);
+    top_szr->Add(m_connect_hashcode_text, 3);
+    top_szr->Add(m_client_port_lbl, 0, wxCENTER | wxRIGHT | wxLEFT, 5);
     top_szr->Add(m_connect_port_text, 1);
 
     wxBoxSizer* const con_szr = new wxBoxSizer(wxVERTICAL);
@@ -190,6 +199,10 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
 
     NetPlayDialog::FillWithGameNames(m_game_lbox, *game_list);
 
+    std::string last_hosted_game;
+    if (netplay_section.Get("SelectedHostGame", &last_hosted_game, ""))
+      m_game_lbox->SetStringSelection(last_hosted_game);
+
     wxBoxSizer* const top_szr = new wxBoxSizer(wxHORIZONTAL);
     top_szr->Add(m_host_port_lbl, 0, wxCENTER | wxRIGHT, 5);
     top_szr->Add(m_host_port_text, 0);
@@ -221,11 +234,14 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
   main_szr->Add(trav_szr, 0, wxALL | wxALIGN_LEFT, 5);
   main_szr->Add(nick_szr, 0, wxALL | wxALIGN_LEFT, 5);
   main_szr->Add(m_traversal_lbl, 0, wxALL | wxALIGN_LEFT, 5);
-  main_szr->Add(notebook, 1, wxLEFT | wxRIGHT | wxEXPAND, 5);
+  main_szr->Add(m_notebook, 1, wxLEFT | wxRIGHT | wxEXPAND, 5);
   main_szr->Add(quit_btn, 0, wxALL | wxALIGN_RIGHT, 5);
 
   panel->SetSizerAndFit(main_szr);
 
+  // Handle focus on tab changes
+  panel->Bind(wxEVT_NOTEBOOK_PAGE_CHANGED, &NetPlaySetupFrame::OnTabChanged, this);
+
   // wxBoxSizer* const diag_szr = new wxBoxSizer(wxVERTICAL);
   // diag_szr->Add(panel, 1, wxEXPAND);
   // SetSizerAndFit(diag_szr);
@@ -237,37 +253,35 @@ NetPlaySetupFrame::NetPlaySetupFrame(wxWindow* const parent, const CGameListCtrl
 
   //  Needs to be done last or it set up the spacing on the page correctly
   wxCommandEvent ev;
-  OnChoice(ev);
+  OnDirectTraversalChoice(ev);
 }
 
 NetPlaySetupFrame::~NetPlaySetupFrame()
 {
   IniFile inifile;
-  const std::string dolphin_ini = File::GetUserPath(D_CONFIG_IDX) + "Dolphin.ini";
+  const std::string dolphin_ini = File::GetUserPath(F_DOLPHINCONFIG_IDX);
   inifile.Load(dolphin_ini);
   IniFile::Section& netplay_section = *inifile.GetOrCreateSection("NetPlay");
 
-  std::string travChoice = "traversal";
-  if (m_direct_traversal->GetSelection() == 1)
-  {
-    netplay_section.Set("TraversalChoice", travChoice);
-  }
-  else
+  std::string travChoice;
+  switch (m_direct_traversal->GetSelection())
   {
+  case TRAVERSAL_CHOICE:
+    travChoice = "traversal";
+    break;
+  case DIRECT_CHOICE:
     travChoice = "direct";
-    netplay_section.Set("TraversalChoice", travChoice);
+    break;
   }
 
+  netplay_section.Set("TraversalChoice", travChoice);
   netplay_section.Set("Nickname", WxStrToStr(m_nickname_text->GetValue()));
 
-  if (m_direct_traversal->GetCurrentSelection() == 0)
-  {
+  if (m_direct_traversal->GetCurrentSelection() == DIRECT_CHOICE)
     netplay_section.Set("Address", WxStrToStr(m_connect_ip_text->GetValue()));
-  }
   else
-  {
-    netplay_section.Set("HostCode", WxStrToStr(m_connect_ip_text->GetValue()));
-  }
+    netplay_section.Set("HostCode", WxStrToStr(m_connect_hashcode_text->GetValue()));
+
   netplay_section.Set("ConnectPort", WxStrToStr(m_connect_port_text->GetValue()));
   netplay_section.Set("HostPort", WxStrToStr(m_host_port_text->GetValue()));
   netplay_section.Set("ListenPort", m_traversal_listen_port_enabled->IsChecked() ?
@@ -283,21 +297,19 @@ void NetPlaySetupFrame::MakeNetPlayDiag(int port, const std::string& game, bool
   NetPlayDialog*& npd = NetPlayDialog::GetInstance();
   NetPlayClient*& netplay_client = NetPlayDialog::GetNetPlayClient();
 
+  bool trav = !is_hosting && m_direct_traversal->GetCurrentSelection() == TRAVERSAL_CHOICE;
+
   std::string ip;
   npd = new NetPlayDialog(m_parent, m_game_list, game, is_hosting);
   if (is_hosting)
     ip = "127.0.0.1";
+  else if (trav)
+    ip = WxStrToStr(m_connect_hashcode_text->GetValue());
   else
     ip = WxStrToStr(m_connect_ip_text->GetValue());
 
-  bool trav;
-  if (!is_hosting && m_direct_traversal->GetCurrentSelection() == 1)
-    trav = true;
-  else
-    trav = false;
-
   IniFile inifile;
-  inifile.Load(File::GetUserPath(D_CONFIG_IDX) + "Dolphin.ini");
+  inifile.Load(File::GetUserPath(F_DOLPHINCONFIG_IDX));
   IniFile::Section& netplay_section = *inifile.GetOrCreateSection("NetPlay");
 
   std::string centralPortString;
@@ -323,6 +335,16 @@ void NetPlaySetupFrame::MakeNetPlayDiag(int port, const std::string& game, bool
 
 void NetPlaySetupFrame::OnHost(wxCommandEvent&)
 {
+  DoHost();
+}
+
+void NetPlaySetupFrame::DoHost()
+{
+  IniFile ini_file;
+  const std::string dolphin_ini = File::GetUserPath(F_DOLPHINCONFIG_IDX);
+  ini_file.Load(dolphin_ini);
+  IniFile::Section& netplay_section = *ini_file.GetOrCreateSection("NetPlay");
+
   NetPlayDialog*& npd = NetPlayDialog::GetInstance();
   NetPlayServer*& netplay_server = NetPlayDialog::GetNetPlayServer();
 
@@ -342,7 +364,7 @@ void NetPlaySetupFrame::OnHost(wxCommandEvent&)
 
   bool trav;
   unsigned long listen_port = 0;
-  if (m_direct_traversal->GetCurrentSelection() == 1)
+  if (m_direct_traversal->GetCurrentSelection() == TRAVERSAL_CHOICE)
   {
     trav = true;
     listen_port =
@@ -354,10 +376,6 @@ void NetPlaySetupFrame::OnHost(wxCommandEvent&)
     m_host_port_text->GetValue().ToULong(&listen_port);
   }
 
-  IniFile inifile;
-  inifile.Load(File::GetUserPath(D_CONFIG_IDX) + "Dolphin.ini");
-  IniFile::Section& netplay_section = *inifile.GetOrCreateSection("NetPlay");
-
   std::string centralPortString;
   GetTraversalPort(netplay_section, &centralPortString);
   unsigned long int centralPort;
@@ -377,6 +395,9 @@ void NetPlaySetupFrame::OnHost(wxCommandEvent&)
 #endif
     MakeNetPlayDiag(netplay_server->GetPort(), game, true);
     netplay_server->SetNetPlayUI(NetPlayDialog::GetInstance());
+
+    netplay_section.Set("SelectedHostGame", game);
+    ini_file.Save(dolphin_ini);
   }
   else
   {
@@ -390,6 +411,11 @@ void NetPlaySetupFrame::OnHost(wxCommandEvent&)
 }
 
 void NetPlaySetupFrame::OnJoin(wxCommandEvent&)
+{
+  DoJoin();
+}
+
+void NetPlaySetupFrame::DoJoin()
 {
   NetPlayDialog*& npd = NetPlayDialog::GetInstance();
   if (npd)
@@ -406,7 +432,7 @@ void NetPlaySetupFrame::OnJoin(wxCommandEvent&)
 void NetPlaySetupFrame::OnResetTraversal(wxCommandEvent& event)
 {
   IniFile inifile;
-  const std::string dolphin_ini = File::GetUserPath(D_CONFIG_IDX) + "Dolphin.ini";
+  const std::string dolphin_ini = File::GetUserPath(F_DOLPHINCONFIG_IDX);
   inifile.Load(dolphin_ini);
   IniFile::Section& netplay_section = *inifile.GetOrCreateSection("NetPlay");
   netplay_section.Set("TraversalServer", (std::string) "stun.dolphin-emu.org");
@@ -421,26 +447,23 @@ void NetPlaySetupFrame::OnTraversalListenPortChanged(wxCommandEvent& event)
   m_traversal_listen_port->Enable(m_traversal_listen_port_enabled->IsChecked());
 }
 
-void NetPlaySetupFrame::OnChoice(wxCommandEvent& event)
+void NetPlaySetupFrame::OnDirectTraversalChoice(wxCommandEvent& event)
 {
   int sel = m_direct_traversal->GetSelection();
   IniFile inifile;
-  inifile.Load(File::GetUserPath(D_CONFIG_IDX) + "Dolphin.ini");
+  inifile.Load(File::GetUserPath(F_DOLPHINCONFIG_IDX));
   IniFile::Section& netplay_section = *inifile.GetOrCreateSection("NetPlay");
 
-  if (sel == 1)
+  if (sel == TRAVERSAL_CHOICE)
   {
     m_traversal_lbl->Show();
     m_trav_reset_btn->Show();
+    m_connect_hashcode_text->Show();
+    m_connect_ip_text->Hide();
     // Traversal
     // client tab
     {
       m_ip_lbl->SetLabelText("Host Code: ");
-
-      std::string address;
-      netplay_section.Get("HostCode", &address, "00000000");
-      m_connect_ip_text->SetLabelText(address);
-
       m_client_port_lbl->Hide();
       m_connect_port_text->Hide();
     }
@@ -460,6 +483,8 @@ void NetPlaySetupFrame::OnChoice(wxCommandEvent& event)
   {
     m_traversal_lbl->Hide();
     m_trav_reset_btn->Hide();
+    m_connect_hashcode_text->Hide();
+    m_connect_ip_text->Show();
     // Direct
     // Client tab
     {
@@ -482,6 +507,65 @@ void NetPlaySetupFrame::OnChoice(wxCommandEvent& event)
     m_upnp_chk->Show();
 #endif
   }
+  m_connect_ip_text->GetParent()->Layout();
+  DispatchFocus();
+}
+
+void NetPlaySetupFrame::OnKeyDown(wxKeyEvent& event)
+{
+  // Let the event propagate
+  event.Skip();
+
+  if (event.GetKeyCode() != wxKeyCode::WXK_RETURN)
+    return;
+
+  int current_tab = m_notebook->GetSelection();
+
+  switch (current_tab)
+  {
+  case CONNECT_TAB:
+    DoJoin();
+    break;
+  case HOST_TAB:
+    DoHost();
+    break;
+  }
+}
+
+void NetPlaySetupFrame::OnTabChanged(wxCommandEvent& event)
+{
+  // Propagate event
+  event.Skip();
+
+  // Delaying action so the first tab order element doesn't override the focus
+  m_notebook->Bind(wxEVT_IDLE, &NetPlaySetupFrame::OnAfterTabChange, this);
+}
+
+void NetPlaySetupFrame::OnAfterTabChange(wxIdleEvent&)
+{
+  // Unbinding so we don't hog the idle event
+  m_notebook->Unbind(wxEVT_IDLE, &NetPlaySetupFrame::OnAfterTabChange, this);
+
+  DispatchFocus();
+}
+
+void NetPlaySetupFrame::DispatchFocus()
+{
+  int current_tab = m_notebook->GetSelection();
+
+  switch (current_tab)
+  {
+  case CONNECT_TAB:
+    if (m_direct_traversal->GetCurrentSelection() == TRAVERSAL_CHOICE)
+      m_connect_hashcode_text->SetFocus();
+    else
+      m_connect_ip_text->SetFocus();
+    break;
+
+  case HOST_TAB:
+    m_game_lbox->SetFocus();
+    break;
+  }
 }
 
 void NetPlaySetupFrame::OnQuit(wxCommandEvent&)

Source/Core/DolphinWX/NetPlay/NetPlaySetupFrame.h

@@ -23,12 +23,24 @@ public:
   ~NetPlaySetupFrame();
 
 private:
+  static constexpr int CONNECT_TAB = 0;
+  static constexpr int HOST_TAB = 1;
+
+  static constexpr int DIRECT_CHOICE = 0;
+  static constexpr int TRAVERSAL_CHOICE = 1;
+
   void OnJoin(wxCommandEvent& event);
   void OnHost(wxCommandEvent& event);
+  void DoJoin();
+  void DoHost();
   void OnQuit(wxCommandEvent& event);
-  void OnChoice(wxCommandEvent& event);
+  void OnDirectTraversalChoice(wxCommandEvent& event);
   void OnResetTraversal(wxCommandEvent& event);
   void OnTraversalListenPortChanged(wxCommandEvent& event);
+  void OnKeyDown(wxKeyEvent& event);
+  void OnTabChanged(wxCommandEvent& event);
+  void OnAfterTabChange(wxIdleEvent& event);
+  void DispatchFocus();
 
   void MakeNetPlayDiag(int port, const std::string& game, bool is_hosting);
 
@@ -39,11 +51,13 @@ private:
   wxTextCtrl* m_host_port_text;
   wxTextCtrl* m_connect_port_text;
   wxTextCtrl* m_connect_ip_text;
+  wxTextCtrl* m_connect_hashcode_text;
   wxChoice* m_direct_traversal;
   wxStaticText* m_traversal_lbl;
   wxButton* m_trav_reset_btn;
   wxCheckBox* m_traversal_listen_port_enabled;
   wxSpinCtrl* m_traversal_listen_port;
+  wxNotebook* m_notebook;
 
   wxListBox* m_game_lbox;
 #ifdef USE_UPNP

Source/Core/DolphinWX/NetPlay/NetWindow.cpp

@@ -12,6 +12,7 @@
 #include <wx/checkbox.h>
 #include <wx/choice.h>
 #include <wx/clipbrd.h>
+#include <wx/colour.h>
 #include <wx/dialog.h>
 #include <wx/frame.h>
 #include <wx/listbox.h>
@@ -48,29 +49,13 @@
 #include "DolphinWX/WxUtils.h"
 #include "MD5Dialog.h"
 
+#include "VideoCommon/OnScreenDisplay.h"
+#include "VideoCommon/VideoConfig.h"
+
 NetPlayServer* NetPlayDialog::netplay_server = nullptr;
 NetPlayClient* NetPlayDialog::netplay_client = nullptr;
 NetPlayDialog* NetPlayDialog::npd = nullptr;
 
-static wxString FailureReasonStringForHostLabel(int reason)
-{
-  switch (reason)
-  {
-  case TraversalClient::BadHost:
-    return _("(Error: Bad host)");
-  case TraversalClient::VersionTooOld:
-    return _("(Error: Dolphin too old)");
-  case TraversalClient::ServerForgotAboutUs:
-    return _("(Error: Disconnected)");
-  case TraversalClient::SocketSendError:
-    return _("(Error: Socket)");
-  case TraversalClient::ResendTimeout:
-    return _("(Error: Timeout)");
-  default:
-    return _("(Error: Unknown)");
-  }
-}
-
 static std::string BuildGameName(const GameListItem& game)
 {
   // Lang needs to be consistent
@@ -280,13 +265,13 @@ NetPlayDialog::~NetPlayDialog()
 
 void NetPlayDialog::OnChat(wxCommandEvent&)
 {
-  wxString text = m_chat_msg_text->GetValue();
+  std::string text = WxStrToStr(m_chat_msg_text->GetValue());
 
   if (!text.empty())
   {
-    netplay_client->SendChatMessage(WxStrToStr(text));
-    m_chat_text->AppendText(text.Prepend(" >> ").Append('\n'));
+    netplay_client->SendChatMessage(text);
     m_chat_msg_text->Clear();
+    AddChatMessage(ChatMessageType::UserOut, text);
   }
 }
 
@@ -406,11 +391,46 @@ void NetPlayDialog::OnAdjustBuffer(wxCommandEvent& event)
 {
   const int val = ((wxSpinCtrl*)event.GetEventObject())->GetValue();
   netplay_server->AdjustPadBufferSize(val);
+}
 
-  std::ostringstream ss;
-  ss << "< Pad Buffer: " << val << " >";
-  netplay_client->SendChatMessage(ss.str());
-  m_chat_text->AppendText(StrToWxStr(ss.str()).Append('\n'));
+void NetPlayDialog::OnPadBufferChanged(u32 buffer)
+{
+  m_pad_buffer = buffer;
+  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_PAD_BUFFER_CHANGE);
+  GetEventHandler()->AddPendingEvent(evt);
+}
+
+void NetPlayDialog::OnDesync(u32 frame, const std::string& player)
+{
+  m_desync_frame = frame;
+  m_desync_player = player;
+  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_DESYNC);
+  GetEventHandler()->AddPendingEvent(evt);
+}
+
+void NetPlayDialog::OnConnectionLost()
+{
+  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_CONNECTION_LOST);
+  GetEventHandler()->AddPendingEvent(evt);
+}
+
+void NetPlayDialog::OnTraversalError(int error)
+{
+  switch (error)
+  {
+  case TraversalClient::BadHost:
+    PanicAlertT("Couldn't look up central server");
+    break;
+  case TraversalClient::VersionTooOld:
+    PanicAlertT("Dolphin is too old for traversal server");
+    break;
+  case TraversalClient::ServerForgotAboutUs:
+  case TraversalClient::SocketSendError:
+  case TraversalClient::ResendTimeout:
+    wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_TRAVERSAL_CONNECTION_ERROR);
+    GetEventHandler()->AddPendingEvent(evt);
+    break;
+  }
 }
 
 void NetPlayDialog::OnQuit(wxCommandEvent&)
@@ -477,17 +497,16 @@ void NetPlayDialog::OnThread(wxThreadEvent& event)
   case NP_GUI_EVT_START_GAME:
     // client start game :/
     {
-      std::string game = FindCurrentGame();
-      if (game.empty())
-        WxUtils::ShowErrorDialog(_("Game not found!"));
-      else
-        netplay_client->StartGame(game);
+      netplay_client->StartGame(FindCurrentGame());
+      std::string msg = "Starting game";
+      AddChatMessage(ChatMessageType::Info, msg);
     }
     break;
   case NP_GUI_EVT_STOP_GAME:
     // client stop game
     {
-      netplay_client->StopGame();
+      std::string msg = "Stopping game";
+      AddChatMessage(ChatMessageType::Info, msg);
     }
     break;
   case NP_GUI_EVT_DISPLAY_MD5_DIALOG:
@@ -515,6 +534,42 @@ void NetPlayDialog::OnThread(wxThreadEvent& event)
     m_MD5_dialog->SetResult(payload.first, payload.second);
   }
   break;
+  case NP_GUI_EVT_PAD_BUFFER_CHANGE:
+  {
+    std::string msg = StringFromFormat("Pad buffer: %d", m_pad_buffer);
+
+    if (g_ActiveConfig.bShowNetPlayMessages)
+    {
+      OSD::AddTypedMessage(OSD::MessageType::NetPlayBuffer, msg, OSD::Duration::NORMAL);
+    }
+
+    AddChatMessage(ChatMessageType::Info, msg);
+  }
+  break;
+  case NP_GUI_EVT_DESYNC:
+  {
+    std::string msg = "Possible desync detected from player " + m_desync_player + " on frame " +
+                      std::to_string(m_desync_frame);
+
+    AddChatMessage(ChatMessageType::Error, msg);
+
+    if (g_ActiveConfig.bShowNetPlayMessages)
+    {
+      OSD::AddMessage(msg, OSD::Duration::VERY_LONG, OSD::Color::RED);
+    }
+  }
+  break;
+  case NP_GUI_EVT_CONNECTION_LOST:
+  {
+    std::string msg = "Lost connection to server";
+    AddChatMessage(ChatMessageType::Error, msg);
+  }
+  break;
+  case NP_GUI_EVT_TRAVERSAL_CONNECTION_ERROR:
+  {
+    std::string msg = "Traversal server connection error";
+    AddChatMessage(ChatMessageType::Error, msg);
+  }
   }
 
   // chat messages
@@ -522,8 +577,12 @@ void NetPlayDialog::OnThread(wxThreadEvent& event)
   {
     std::string s;
     chat_msgs.Pop(s);
-    // PanicAlert("message: %s", s.c_str());
-    m_chat_text->AppendText(StrToWxStr(s).Append('\n'));
+    AddChatMessage(ChatMessageType::UserIn, s);
+
+    if (g_ActiveConfig.bShowNetPlayMessages)
+    {
+      OSD::AddMessage(s, OSD::Duration::NORMAL, OSD::Color::GREEN);
+    }
   }
 }
 
@@ -690,7 +749,7 @@ void NetPlayDialog::UpdateHostLabel()
       break;
     case TraversalClient::Failure:
       m_host_label->SetForegroundColour(*wxBLACK);
-      m_host_label->SetLabel(FailureReasonStringForHostLabel(g_TraversalClient->m_FailureReason));
+      m_host_label->SetLabel("...");
       m_host_copy_btn->SetLabel(_("Retry"));
       m_host_copy_btn->Enable();
       m_host_copy_btn_is_retry = true;
@@ -724,3 +783,36 @@ void NetPlayDialog::UpdateHostLabel()
     }
   }
 }
+
+void NetPlayDialog::AddChatMessage(ChatMessageType type, const std::string& msg)
+{
+  wxColour colour = *wxBLACK;
+  std::string printed_msg = msg;
+
+  switch (type)
+  {
+  case ChatMessageType::Info:
+    colour = wxColour(0, 150, 150);  // cyan
+    break;
+
+  case ChatMessageType::Error:
+    colour = *wxRED;
+    break;
+
+  case ChatMessageType::UserIn:
+    colour = wxColour(0, 150, 0);  // green
+    printed_msg = "▶ " + msg;
+    break;
+
+  case ChatMessageType::UserOut:
+    colour = wxColour(100, 100, 100);  // grey
+    printed_msg = "◀ " + msg;
+    break;
+  }
+
+  if (type == ChatMessageType::Info || type == ChatMessageType::Error)
+    printed_msg = "― " + msg + " ―";
+
+  m_chat_text->SetDefaultStyle(wxTextAttr(colour));
+  m_chat_text->AppendText(StrToWxStr(printed_msg + "\n"));
+}

Source/Core/DolphinWX/NetPlay/NetWindow.h

@@ -31,6 +31,10 @@ enum
   NP_GUI_EVT_DISPLAY_MD5_DIALOG,
   NP_GUI_EVT_MD5_PROGRESS,
   NP_GUI_EVT_MD5_RESULT,
+  NP_GUI_EVT_PAD_BUFFER_CHANGE,
+  NP_GUI_EVT_DESYNC,
+  NP_GUI_EVT_CONNECTION_LOST,
+  NP_GUI_EVT_TRAVERSAL_CONNECTION_ERROR,
 };
 
 enum
@@ -38,6 +42,18 @@ enum
   INITIAL_PAD_BUFFER_SIZE = 5
 };
 
+enum class ChatMessageType
+{
+  // Info messages logged to chat
+  Info,
+  // Error messages logged to chat
+  Error,
+  // Incoming user chat messages
+  UserIn,
+  // Outcoming user chat messages
+  UserOut,
+};
+
 // IDs are UI-dependent here
 enum class MD5Target
 {
@@ -72,6 +88,10 @@ public:
   void OnMsgChangeGame(const std::string& filename) override;
   void OnMsgStartGame() override;
   void OnMsgStopGame() override;
+  void OnPadBufferChanged(u32 buffer) override;
+  void OnDesync(u32 frame, const std::string& player) override;
+  void OnConnectionLost() override;
+  void OnTraversalError(int error) override;
 
   static NetPlayDialog*& GetInstance() { return npd; }
   static NetPlayClient*& GetNetPlayClient() { return netplay_client; }
@@ -92,7 +112,8 @@ private:
   void OnPlayerSelect(wxCommandEvent& event);
   void GetNetSettings(NetSettings& settings);
   std::string FindCurrentGame();
-  std::string FindGame(const std::string& game) override;
+  std::string FindGame(const std::string& game);
+  void AddChatMessage(ChatMessageType type, const std::string& msg);
 
   void OnCopyIP(wxCommandEvent&);
   void OnChoice(wxCommandEvent& event);
@@ -116,6 +137,9 @@ private:
   MD5Dialog* m_MD5_dialog = nullptr;
   bool m_host_copy_btn_is_retry;
   bool m_is_hosting;
+  u32 m_pad_buffer;
+  u32 m_desync_frame;
+  std::string m_desync_player;
 
   std::vector<int> m_playerids;
 

Source/Core/DolphinWX/VideoConfigDiag.cpp

@@ -201,13 +201,20 @@ static wxString disable_fog_desc =
                 "detail.\nDisabling fog will break some games which rely on proper fog "
                 "emulation.\n\nIf unsure, leave this unchecked.");
 static wxString show_fps_desc =
-    wxTRANSLATE("Show the number of frames rendered per second as a measure of emulation "
-                "speed.\n\nIf unsure, leave this unchecked.");
-static wxString log_render_time_to_file_desc = wxTRANSLATE(
-    "Log the render time of every frame to User/Logs/render_time.txt. Use this feature when you "
-    "want to measure the performance of Dolphin.\n\nIf unsure, leave this unchecked.");
+    wxTRANSLATE("Show the number of frames rendered per second as a measure of "
+                "emulation speed.\n\nIf unsure, leave this unchecked.");
+static wxString show_netplay_ping_desc =
+    wxTRANSLATE("Show the players' maximum Ping while playing on "
+                "NetPlay.\n\nIf unsure, leave this unchecked.");
+static wxString log_render_time_to_file_desc =
+    wxTRANSLATE("Log the render time of every frame to User/Logs/render_time.txt. Use this "
+                "feature when you want to measure the performance of Dolphin.\n\nIf "
+                "unsure, leave this unchecked.");
 static wxString show_stats_desc =
     wxTRANSLATE("Show various rendering statistics.\n\nIf unsure, leave this unchecked.");
+static wxString show_netplay_messages_desc =
+    wxTRANSLATE("When playing on NetPlay, show chat messages, buffer changes and "
+                "desync alerts.\n\nIf unsure, leave this unchecked.");
 static wxString texfmt_desc =
     wxTRANSLATE("Modify textures to show the format they're encoded in. Needs an emulation reset "
                 "in most cases.\n\nIf unsure, leave this unchecked.");
@@ -442,12 +449,18 @@ VideoConfigDiag::VideoConfigDiag(wxWindow* parent, const std::string& title)
       {
         szr_other->Add(CreateCheckBox(page_general, _("Show FPS"), wxGetTranslation(show_fps_desc),
                                       vconfig.bShowFPS));
+        szr_other->Add(CreateCheckBox(page_general, _("Show NetPlay Ping"),
+                                      wxGetTranslation(show_netplay_ping_desc),
+                                      vconfig.bShowNetPlayPing));
         szr_other->Add(CreateCheckBox(page_general, _("Log Render Time to File"),
                                       wxGetTranslation(log_render_time_to_file_desc),
                                       vconfig.bLogRenderTimeToFile));
         szr_other->Add(CreateCheckBox(page_general, _("Auto adjust Window Size"),
                                       wxGetTranslation(auto_window_size_desc),
                                       SConfig::GetInstance().bRenderWindowAutoSize));
+        szr_other->Add(CreateCheckBox(page_general, _("Show NetPlay Messages"),
+                                      wxGetTranslation(show_netplay_messages_desc),
+                                      vconfig.bShowNetPlayMessages));
         szr_other->Add(CreateCheckBox(page_general, _("Keep Window on Top"),
                                       wxGetTranslation(keep_window_on_top_desc),
                                       SConfig::GetInstance().bKeepWindowOnTop));