Fix BB EP4 solo quest unlocks

Fix BB EP4 solo quest unlocks and ship-state marking

src/Client.cc

@@ -405,6 +405,13 @@ bool Client::can_see_quest(
   if (!q->has_version_any_language(this->version())) {
     return false;
   }
+  if ((this->version() == Version::BB_V4) &&
+      game &&
+      (game->mode == GameMode::SOLO) &&
+      (game->episode == Episode::EP4) &&
+      (q->meta.episode == Episode::EP4)) {
+    return true;
+  }
   return this->evaluate_quest_availability_expression(
       q->meta.available_expression, game, event, difficulty, num_players, v1_present);
 }
@@ -422,6 +429,13 @@ bool Client::can_play_quest(
   if ((q->meta.max_players > 0) && (num_players > q->meta.max_players)) {
     return false;
   }
+  if ((this->version() == Version::BB_V4) &&
+      game &&
+      (game->mode == GameMode::SOLO) &&
+      (game->episode == Episode::EP4) &&
+      (q->meta.episode == Episode::EP4)) {
+    return true;
+  }
   return this->evaluate_quest_availability_expression(
       q->meta.enabled_expression, game, event, difficulty, num_players, v1_present);
 }

src/ReceiveCommands.cc

@@ -4409,6 +4409,13 @@ static asio::awaitable<void> on_E5_BB(shared_ptr<Client> c, Channel::Message& ms
         }
         c->log.info_f("Marked BB character as Test: {}", c->character_filename());
       }
+      if (!enforce_bb_test_ship_lock(c, s->enable_test_mode)) {
+        c->unload_character(false);
+        should_send_approve = false;
+      } else if (!enforce_bb_hardcore_ship_lock(c, s->enable_hardcore_mode)) {
+        c->unload_character(false);
+        should_send_approve = false;
+      }
     } catch (const exception& e) {
       send_message_box(c, std::format("$C6New character could not be created:\n{}", e.what()));
       should_send_approve = false;
@@ -5338,6 +5345,16 @@ shared_ptr<Lobby> create_game_generic(
     creator_c->set_flag(Client::Flag::SHOULD_SEND_ARTIFICIAL_FLAG_STATE);
   }
 
+  if ((creator_c->version() == Version::BB_V4) &&
+      (game->mode == GameMode::SOLO) &&
+      (game->episode == Episode::EP4)) {
+    for (uint16_t flag : {0x0046, 0x0047, 0x0048, 0x02BD, 0x02BE, 0x02BF, 0x02C0, 0x02C1}) {
+      game->log.info_f("Unlocking BB Episode IV solo area flag {:04X}", flag);
+      game->quest_flag_values->set(game->difficulty, flag);
+    }
+    creator_c->set_flag(Client::Flag::SHOULD_SEND_ARTIFICIAL_FLAG_STATE);
+  }
+
   game->switch_flags = make_unique<SwitchFlags>();
 
   return game;