Game specific configs (#3376)

* poc

* Set up variable game specific variable copies

* Set up getters to return the game specific option if it exists

* Avoid exceptions if a value isn't in the config

* Make sure the custom configs folder exists

* Update + review comments + rewrite

* The loathsome clang-formatter

* Specify which getter/setter is used everywhere

src/common/config.h

@@ -16,7 +16,7 @@ struct GameInstallDir {
 
 enum HideCursorState : int { Never, Idle, Always };
 
-void load(const std::filesystem::path& path);
+void load(const std::filesystem::path& path, bool is_game_specific = false);
 void save(const std::filesystem::path& path);
 
 int getVolumeSlider();

src/common/path_util.cpp

@@ -137,6 +137,7 @@ static auto UserPaths = [] {
     create_path(PathType::PatchesDir, user_dir / PATCHES_DIR);
     create_path(PathType::MetaDataDir, user_dir / METADATA_DIR);
     create_path(PathType::CustomTrophy, user_dir / CUSTOM_TROPHY);
+    create_path(PathType::CustomConfigs, user_dir / CUSTOM_CONFIGS);
 
     std::ofstream notice_file(user_dir / CUSTOM_TROPHY / "Notice.txt");
     if (notice_file.is_open()) {

src/common/path_util.h

@@ -27,6 +27,7 @@ enum class PathType {
     PatchesDir,     // Where patches are stored.
     MetaDataDir,    // Where game metadata (e.g. trophies and menu backgrounds) is stored.
     CustomTrophy,   // Where custom files for trophies are stored.
+    CustomConfigs,  // Where custom files for different games are stored.
 };
 
 constexpr auto PORTABLE_DIR = "user";
@@ -44,6 +45,7 @@ constexpr auto CHEATS_DIR = "cheats";
 constexpr auto PATCHES_DIR = "patches";
 constexpr auto METADATA_DIR = "game_data";
 constexpr auto CUSTOM_TROPHY = "custom_trophy";
+constexpr auto CUSTOM_CONFIGS = "custom_configs";
 
 // Filenames
 constexpr auto LOG_FILE = "shad_log.txt";

src/emulator.cpp

@@ -114,6 +114,9 @@ void Emulator::Run(std::filesystem::path file, const std::vector<std::string> ar
         }
     }
 
+    Config::load(Common::FS::GetUserPath(Common::FS::PathType::CustomConfigs) / (id + ".toml"),
+                 true);
+
     // Initialize logging as soon as possible
     if (!id.empty() && Config::getSeparateLogFilesEnabled()) {
         Common::Log::Initialize(id + ".log");