fix spectator list in game details display

TODO.md

@@ -23,9 +23,7 @@
 
 - Make disconnecting during a tournament match cause you to forfeit the match
 - Enforce tournament deck restrictions (e.g. rank checks, No Assist option) when populating COMs at tournament start time
-- Spectator teams
-    - Spectator teams sometimes stop receiving commands during live battles?
-    - It may be possible to send spectators back to the waiting room after a non-tournament battle by sending 6xB4x05 with environment 0x19, then 6xB4x3B again; try this
+- It may be possible to send spectators back to the waiting room after a non-tournament battle by sending 6xB4x05 with environment 0x19, then 6xB4x3B again; try this
 - Add support for recording battles on the proxy server (both in primary and spectator teams)
 
 ## PSOBB

src/CommandFormats.hh

@@ -2829,9 +2829,10 @@ struct S_GameInformation_GC_Ep3_E1 {
     ptext<char, 0x20> description; // Usually something like "FOmarl CLv30 J"
   } __packed__;
   /* 0024 */ parray<PlayerEntry, 4> player_entries;
-  /* 00E4 */ parray<uint8_t, 0x20> unknown_a3;
+  /* 00E4 */ ptext<char, 0x20> map_name;
   /* 0104 */ Episode3::Rules rules;
   /* 0118 */ parray<PlayerEntry, 8> spectator_entries;
+  /* 0298 */
 } __packed__;
 
 // E1 (S->C): Team and key config missing? (BB)
@@ -2922,9 +2923,9 @@ struct S_TournamentEntryList_GC_Ep3_E2 {
 
 struct S_TournamentGameDetails_GC_Ep3_E3 {
   // These fields are used only if the Rules pane is shown
-  /* 0004/032C */ ptext<char, 0x20> name;
-  /* 0024/034C */ ptext<char, 0x20> map_name;
-  /* 0044/036C */ Episode3::Rules rules;
+  /* 0004 */ ptext<char, 0x20> name;
+  /* 0024 */ ptext<char, 0x20> map_name;
+  /* 0044 */ Episode3::Rules rules;
 
   // This field is used only if the bracket pane is shown
   struct BracketEntry {
@@ -2933,7 +2934,7 @@ struct S_TournamentGameDetails_GC_Ep3_E3 {
     ptext<char, 0x18> team_name;
     parray<uint8_t, 8> unused;
   } __packed__;
-  /* 0058/0380 */ parray<BracketEntry, 0x20> bracket_entries;
+  /* 0058 */ parray<BracketEntry, 0x20> bracket_entries;
 
   // This field is used only if the Opponents pane is shown. If players_per_team
   // is 2, all fields are shown; if player_per_team is 1, team_name and
@@ -2946,13 +2947,14 @@ struct S_TournamentGameDetails_GC_Ep3_E3 {
     ptext<char, 0x10> team_name;
     parray<PlayerEntry, 2> players;
   } __packed__;
-  /* 04D8/0800 */ parray<TeamEntry, 2> team_entries;
+  /* 04D8 */ parray<TeamEntry, 2> team_entries;
 
-  /* 05B8/08E0 */ le_uint16_t num_bracket_entries = 0;
-  /* 05BA/08E2 */ le_uint16_t players_per_team = 0;
-  /* 05BC/08E4 */ le_uint16_t unknown_a4 = 0;
-  /* 05BE/08E6 */ le_uint16_t num_spectators = 0;
-  /* 05C0/08E8 */ parray<PlayerEntry, 8> spectator_entries;
+  /* 05B8 */ le_uint16_t num_bracket_entries = 0;
+  /* 05BA */ le_uint16_t players_per_team = 0;
+  /* 05BC */ le_uint16_t unknown_a4 = 0;
+  /* 05BE */ le_uint16_t num_spectators = 0;
+  /* 05C0 */ parray<PlayerEntry, 8> spectator_entries;
+  /* 0740 */
 } __packed__;
 
 // E3 (C->S): Player preview request (BB)

src/SendCommands.cc

@@ -2486,9 +2486,6 @@ void send_ep3_game_details(shared_ptr<Client> c, shared_ptr<Lobby> l) {
 
     uint8_t flag;
     if (l != primary_lobby) {
-      // TODO: This doesn't work (nothing shows up), but it appears to be a
-      // client bug? There doesn't appear to be a count field in the command
-      // anywhere...?
       size_t num_spectators = 0;
       for (auto spec_c : l->clients) {
         if (spec_c) {
@@ -2497,6 +2494,16 @@ void send_ep3_game_details(shared_ptr<Client> c, shared_ptr<Lobby> l) {
           entry.description = ep3_description_for_client(spec_c);
         }
       }
+
+      // There is a client bug that causes the spectators list to always be
+      // empty when sent with E1, because there's no way for E1 to set the
+      // spectator count in the info window object. To account for this, we send
+      // a mostly-blank E3 to set the spectator count, followed by an E1 with
+      // the correct data.
+      S_TournamentGameDetails_GC_Ep3_E3 cmd_E3;
+      cmd_E3.num_spectators = num_spectators;
+      send_command_t(c, 0xE3, 0x04, cmd_E3);
+
       flag = 0x04;
 
     } else if (primary_lobby &&