Add comments to states.

source/appstates/ExtrasMenuState.cpp

@@ -33,6 +33,8 @@ namespace
 // Definition at bottom.
 static void finish_reinitialization();
 
+//                      ---- Construction ----
+
 ExtrasMenuState::ExtrasMenuState()
     : m_renderTarget(sdl::TextureManager::load(SECONDARY_TARGET, 1080, 555, SDL_TEXTUREACCESS_TARGET))
     , m_controlGuide(ui::ControlGuide::create(strings::get_by_name(strings::names::CONTROL_GUIDES, 5)))
@@ -40,6 +42,8 @@ ExtrasMenuState::ExtrasMenuState()
     ExtrasMenuState::initialize_menu();
 }
 
+//                      ---- Public functions ----
+
 void ExtrasMenuState::update()
 {
     const bool hasFocus = BaseState::has_focus();
@@ -77,6 +81,8 @@ void ExtrasMenuState::render()
     m_controlGuide->render(sdl::Texture::Null, hasFocus);
 }
 
+//                      ---- Private functions ----
+
 void ExtrasMenuState::initialize_menu()
 {
     if (!m_extrasMenu) { m_extrasMenu = ui::Menu::create(32, 10, 1000, 23, 555); }