fix episode field in game list command

src/CommandFormats.hh

@@ -552,12 +552,18 @@ struct S_GameMenuEntryT {
   // - On BB, 0x40/0x41 mean Episodes 1/2 as on GC, and 0x43 means Episode 4.
   uint8_t episode = 0;
   // Flags:
+  // 01 = Send name? (client sends the name field in the 10 command if this
+  //      item is chosen, but it's blank)
   // 02 = Locked (lock icon appears in menu; player is prompted for password if
   //      they choose this game)
   // 04 = In battle (Episode 3; a sword icon appears in menu)
   // 04 = Disabled (BB; used for solo games)
   // 10 = Is battle mode
   // 20 = Is challenge mode
+  // 40 = Is v2 only (DCv2/PC); name renders in orange
+  // 40 = Is Episode 1 (V3/BB)
+  // 80 = Is Episode 2 (V3/BB)
+  // C0 = Is Episode 4 (BB)
   uint8_t flags = 0;
 } __packed__;
 using S_GameMenuEntry_PC_BB_08 = S_GameMenuEntryT<TextEncoding::UTF16>;

src/SendCommands.cc

@@ -1461,7 +1461,7 @@ void send_game_menu_t(
     auto& e = entries.emplace_back();
     e.menu_id = MenuID::GAME;
     e.game_id = l->lobby_id;
-    e.difficulty_tag = (l->is_ep3() ? 0x0A : (l->difficulty + 0x22));
+    e.difficulty_tag = (is_ep3(c->version()) ? 0x0A : (l->difficulty + 0x22));
     e.num_players = l->count_clients();
     if (is_dc(c->version())) {
       e.episode = l->version_is_allowed(Version::DC_V1) ? 1 : 0;
@@ -1490,6 +1490,10 @@ void send_game_menu_t(
         default:
           throw logic_error("invalid game mode");
       }
+      // On v2, render name in orange if v1 is not allowed
+      if (is_v2(c->version()) && !l->version_is_allowed(Version::DC_V1)) {
+        e.flags |= 0x40;
+      }
       // On BB, gray out games that can't be joined
       if ((c->version() == Version::BB_V4) && (l->join_error_for_client(c, nullptr) != Lobby::JoinError::ALLOWED)) {
         e.flags |= 0x04;