Moved advanced prefs manager out of game_launcher

It didn't really make much sense to keep it here. The manager singleton is now local to its implementation
and initialized in game_config_manager::init_game_config like the credits data.

src/game_config_manager.cpp

@@ -31,6 +31,7 @@
 #include "language.hpp"
 #include "log.hpp"
 #include "picture.hpp"
+#include "preferences/advanced.hpp"
 #include "preferences/general.hpp"
 #include "scripting/game_lua_kernel.hpp"
 #include "serialization/schema_validator.hpp"
@@ -107,6 +108,9 @@ bool game_config_manager::init_game_config(FORCE_RELOAD_CONFIG force_reload)
 	hotkey::load_hotkeys(game_config(), true);
 	preferences::load_hotkeys();
 
+	// TODO: consider making this part of preferences::manager in some fashion
+	preferences::init_advanced_manager(game_config());
+
 	::init_textdomains(game_config());
 	about::set_about(game_config());
 	ai::configuration::init(game_config());

src/game_launcher.cpp

@@ -43,7 +43,6 @@
 #include "language.hpp"                      // for language_def, etc
 #include "log.hpp"                           // for LOG_STREAM, logger, general, etc
 #include "map/exception.hpp"
-#include "preferences/advanced.hpp" // for advanced_manager
 #include "preferences/credentials.hpp"
 #include "preferences/display.hpp"
 #include "preferences/general.hpp" // for disable_preferences_save, etc
@@ -104,7 +103,6 @@ game_launcher::game_launcher(const commandline_options& cmdline_opts)
 	, video_(new CVideo())
 	, font_manager_()
 	, prefs_manager_()
-	, advanced_prefs_manager_()
 	, image_manager_()
 	, main_event_context_()
 	, hotkey_manager_()
@@ -431,11 +429,6 @@ bool game_launcher::init_lua_script()
 	return !error;
 }
 
-void game_launcher::init_advanced_prefs_manager()
-{
-	advanced_prefs_manager_ = std::make_unique<preferences::advanced_manager>(game_config_manager::get()->game_config());
-}
-
 void game_launcher::set_test(const std::string& id)
 {
 	state_.clear();

src/game_launcher.hpp

@@ -33,8 +33,6 @@ class commandline_options;
 class config;
 class CVideo;
 
-namespace preferences { class advanced_manager; }
-
 struct jump_to_campaign_info
 {
 	/** Whether the game should immediately start a campaign. */
@@ -81,7 +79,6 @@ class game_launcher
 	bool init_video();
 	bool init_language();
 	bool init_lua_script();
-	void init_advanced_prefs_manager();
 
 	bool play_test();
 	bool play_screenshot_mode();
@@ -136,7 +133,6 @@ class game_launcher
 
 	font::manager font_manager_;
 	const preferences::manager prefs_manager_;
-	std::unique_ptr<preferences::advanced_manager> advanced_prefs_manager_;
 	const image::manager image_manager_;
 	const events::event_context main_event_context_;
 	const hotkey::manager hotkey_manager_;

src/preferences/advanced.cpp

@@ -24,13 +24,11 @@ static lg::log_domain advanced_preferences("advanced_preferences");
 
 namespace preferences
 {
-static advanced_manager* singleton = nullptr;
+static std::unique_ptr<preferences::advanced_manager> singleton = nullptr;
 
 advanced_manager::advanced_manager(const game_config_view& gc)
 	: prefs()
 {
-	singleton = this;
-
 	for(const config& pref : gc.child_range("advanced_preference")) {
 		try {
 			prefs.emplace_back(pref);
@@ -46,7 +44,6 @@ advanced_manager::advanced_manager(const game_config_view& gc)
 
 advanced_manager::~advanced_manager()
 {
-	singleton = nullptr;
 }
 
 advanced_manager::option::option(const config& pref)
@@ -71,6 +68,11 @@ advanced_manager::option::option(const config& pref)
 	}
 }
 
+void init_advanced_manager(const game_config_view& gc)
+{
+	singleton = std::make_unique<advanced_manager>(gc);
+}
+
 const advanced_pref_list& get_advanced_preferences()
 {
 	assert(singleton && "Advanced preference manager singleton is null!");

src/preferences/advanced.hpp

@@ -27,7 +27,7 @@ namespace preferences
 class advanced_manager
 {
 public:
-	advanced_manager(const game_config_view& gc);
+	explicit advanced_manager(const game_config_view& gc);
 
 	~advanced_manager();
 
@@ -62,6 +62,9 @@ class advanced_manager
 	std::vector<option> prefs;
 };
 
+/** Initializes the manager singleton. */
+void init_advanced_manager(const game_config_view& gc);
+
 using advanced_pref_list = std::vector<advanced_manager::option>;
 
 /** Gets a list of the available advanced preferences. */

src/wesnoth.cpp

@@ -795,8 +795,6 @@ static int do_gameloop(const std::vector<std::string>& args)
 
 	LOG_CONFIG << "time elapsed: " << (SDL_GetTicks() - start_ticks) << " ms\n";
 
-	game->init_advanced_prefs_manager();
-
 	plugins_manager plugins_man(new application_lua_kernel);
 
 	const plugins_context::reg_vec callbacks {