Codechange: split off the settings table and all the callbacks from the main settings handling logic

src/settings_table.h

@@ -0,0 +1,38 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file settings_table.h Definition of the configuration tables of the settings.
+ */
+
+#ifndef SETTINGS_TABLE_H
+#define SETTINGS_TABLE_H
+
+#include <array>
+#include "settings_internal.h"
+
+typedef span<const SettingVariant> SettingTable;
+
+extern SettingTable _settings;
+extern SettingTable _network_settings;
+extern SettingTable _network_private_settings;
+extern SettingTable _network_secrets_settings;
+
+extern SettingTable _company_settings;
+extern SettingTable _currency_settings;
+extern SettingTable _gameopt_settings;
+extern SettingTable _misc_settings;
+extern SettingTable _window_settings;
+#if defined(_WIN32) && !defined(DEDICATED)
+extern SettingTable _win32_settings;
+#endif /* _WIN32 */
+
+static const uint GAME_DIFFICULTY_NUM = 18;
+extern const std::array<std::string, GAME_DIFFICULTY_NUM> _old_diff_settings;
+extern uint16 _old_diff_custom[GAME_DIFFICULTY_NUM];
+
+#endif /* SETTINGS_TABLE_H */