Network-related confirmation dialogs on startup

src/supertux/gameconfig.cpp

@@ -34,6 +34,7 @@
 #endif
 
 Config::Config() :
+  m_initial(true),
   profile(1),
   fullscreen_size(0, 0),
   fullscreen_refresh_rate(0),
@@ -340,6 +341,8 @@ Config::load()
       }
     }
   }
+
+  m_initial = false;
 }
 
 void

src/supertux/gameconfig.hpp

@@ -34,6 +34,12 @@ class Config final
   void load();
   void save();
 
+  bool is_initial() const { return m_initial; }
+
+private:
+  bool m_initial;
+
+public:
   int profile;
 
   /** the width/height to be used to display the game in fullscreen */

src/supertux/menu/main_menu.cpp

@@ -22,6 +22,7 @@
 #include "gui/menu_item.hpp"
 #include "gui/menu_manager.hpp"
 #include "supertux/fadetoblack.hpp"
+#include "supertux/gameconfig.hpp"
 #include "supertux/globals.hpp"
 #include "supertux/level.hpp"
 #include "supertux/level_parser.hpp"
@@ -68,6 +69,24 @@ MainMenu::MainMenu()
 #endif
 
   on_window_resize();
+
+#ifndef __EMSCRIPTEN__
+  // Show network-related confirmation dialogs on first startup
+  if (g_config->is_initial())
+  {
+    Dialog::show_confirmation(_("Would you allow SuperTux to connect to the Internet?\n\nThis enables additional features, such as the in-game add-on catalog."),
+      []()
+      {
+        g_config->disable_network = false;
+
+        Dialog::show_confirmation(_("Would you allow SuperTux to check for new releases on startup?\n\nYou will be notified if any are found."),
+          []()
+          {
+            g_config->do_release_check = true;
+          });
+      }, true);
+  }
+#endif
 }
 
 void