document some ep3 tournament command fields

src/CommandFormats.hh

@@ -2318,7 +2318,26 @@ struct S_TournamentList_GC_Ep3_E0 {
   struct Entry {
     le_uint32_t menu_id = 0;
     le_uint32_t item_id = 0;
-    parray<uint8_t, 4> unknown_a1;
+    uint8_t unknown_a1;
+    uint8_t locked; // If nonzero, the lock icon appears in the menu
+    // Values for the state field:
+    // 00 = Preparing
+    // 01 = 1st Round
+    // 02 = 2nd Round
+    // 03 = 3rd Round
+    // 04 = Semifinals
+    // 05 = Entries no longer accepted
+    // 06 = Finals
+    // 07 = Preparing for Battle
+    // 08 = Battle in progress
+    // 09 = Preparing to view Battle
+    // 0A = Viewing a Battle
+    // Values beyond 0A don't appear to cause problems, but cause strings to
+    // appear that are obviously not intended to appear in the tournament list,
+    // like "View the board" and "Board: Write". (In fact, some of the strings
+    // listed above may be unintended for this menu as well.)
+    uint8_t state;
+    uint8_t unknown_a2;
     le_uint32_t start_time = 0; // In seconds since Unix epoch
     ptext<char, 0x20> name;
     le_uint16_t num_teams = 0;
@@ -2370,7 +2389,18 @@ struct S_TournamentEntryList_GC_Ep3_E2 {
   struct Entry {
     le_uint32_t menu_id = 0;
     le_uint32_t item_id = 0;
-    parray<uint8_t, 4> unknown_a1;
+    uint8_t unknown_a1;
+    // If locked is nonzero, a lock icon appears next to this team and the
+    // player is prompted for a password if they select this team.
+    uint8_t locked;
+    // State values:
+    // 00 = empty (team_name is ignored; entry is selectable)
+    // 01 = present, joinable (team_name renders in white)
+    // 02 = present, finalized (team_name renders in yellow)
+    // If state is any other value, the entry renders as if its state were 02,
+    // but cannot be selected at all (the menu cursor simply skips over it).
+    uint8_t state;
+    uint8_t unknown_a2;
     ptext<char, 0x20> team_name;
   } __packed__;
   parray<Entry, 0x20> entries;

src/ReceiveCommands.cc

@@ -908,7 +908,7 @@ static void on_ep3_server_data_request(shared_ptr<ServerState> s, shared_ptr<Cli
     uint16_t, uint32_t, const string& data) { // CA
   auto l = s->find_lobby(c->lobby_id);
   if (!l || !(l->flags & Lobby::Flag::EPISODE_3_ONLY) || !l->is_game()) {
-    throw runtime_error("Episode 3 server data request sent in lobby or non-Episode 3 game");
+    throw runtime_error("Episode 3 server data request sent outside of Episode 3 game");
   }
 
   const auto& header = check_size_t<G_CardServerDataCommandHeader>(