add UnlockAllAreas config option

src/ReceiveCommands.cc

@@ -4322,6 +4322,40 @@ shared_ptr<Lobby> create_game_generic(
     game->quest_flag_values = make_unique<QuestFlags>();
     game->quest_flags_known = make_unique<QuestFlags>();
   }
+
+  if (s->unlock_all_areas) {
+    static const vector<uint16_t> flags_ep1_v123 = {0x0017, 0x0020, 0x002A};
+    static const vector<uint16_t> flags_ep1_v4 = {0x01F9, 0x0201, 0x0207};
+    static const vector<uint16_t> flags_ep2_v123 = {0x004C, 0x004F, 0x0052};
+    static const vector<uint16_t> flags_ep2_v4 = {0x021B, 0x0225, 0x022F};
+    static const vector<uint16_t> flags_ep4_v4 = {0x02BD, 0x02BE, 0x02BF, 0x02C0, 0x02C1};
+
+    const vector<uint16_t>* flags_to_enable;
+    switch (game->episode) {
+      case Episode::EP1:
+        flags_to_enable = is_v4(game->base_version) ? &flags_ep1_v4 : &flags_ep1_v123;
+        break;
+      case Episode::EP2:
+        flags_to_enable = is_v4(game->base_version) ? &flags_ep2_v4 : &flags_ep2_v123;
+        break;
+      case Episode::EP4:
+        flags_to_enable = &flags_ep1_v4;
+        break;
+      default:
+        flags_to_enable = nullptr;
+    }
+
+    if (flags_to_enable) {
+      for (uint16_t flag_num : *flags_to_enable) {
+        game->quest_flag_values->set(game->difficulty, flag_num);
+        if (game->quest_flags_known) {
+          game->quest_flags_known->set(game->difficulty, flag_num);
+        }
+      }
+      c->config.set_flag(Client::Flag::SHOULD_SEND_ARTIFICIAL_FLAG_STATE);
+    }
+  }
+
   game->switch_flags = make_unique<SwitchFlags>();
 
   return game;

src/ServerState.cc

@@ -890,6 +890,7 @@ void ServerState::load_config_early() {
   this->allow_dc_pc_games = this->config_json->get_bool("AllowDCPCGames", true);
   this->allow_gc_xb_games = this->config_json->get_bool("AllowGCXBGames", true);
   this->enable_chat_commands = this->config_json->get_bool("EnableChatCommands", true);
+  this->unlock_all_areas = this->config_json->get_bool("UnlockAllAreas", false);
 
   this->version_name_colors.reset();
   try {

src/ServerState.hh

@@ -91,6 +91,7 @@ struct ServerState : public std::enable_shared_from_this<ServerState> {
   bool allow_dc_pc_games = true;
   bool allow_gc_xb_games = true;
   bool enable_chat_commands = true;
+  bool unlock_all_areas = false;
   std::unique_ptr<std::array<uint32_t, NUM_NON_PATCH_VERSIONS>> version_name_colors;
   uint8_t allowed_drop_modes_v1_v2_normal = 0x1F;
   uint8_t allowed_drop_modes_v1_v2_battle = 0x07;

system/config.example.json

@@ -957,6 +957,12 @@
   //       available on the proxy server.
   "CheatModeBehavior": "OnByDefault",
 
+  // Whether to unlock all areas by default in Ep1/2/4 games. If this is on,
+  // the Ragol warp in Pioneer 2 will allow access to all base areas (Forest 1,
+  // Cave 1, Mine 1, and Ruins 1 in Episode 1, for example) even if the player
+  // who created the game does not yet have access to those areas.
+  "UnlockAllAreas": false,
+
   // Whether to enable rare drop notifications by default. Players can toggle
   // this behavior for themselves with the $itemnotifs command.
   "RareNotificationsEnabledByDefaultV1V2": false,

tests/config.json

@@ -30,6 +30,7 @@
   "DefaultDropModeV4Battle": "SERVER_SHARED",
   "DefaultDropModeV4Challenge": "SERVER_SHARED",
   "CheatModeBehavior": "OnByDefault",
+  "UnlockAllAreas": false,
   "RareNotificationsEnabledByDefault": false,
 
   "LocalAddress": "en0",