System: Add option to use per-game memory cards with game title as filename

src/core/settings.cpp

@@ -383,9 +383,10 @@ const char* Settings::GetControllerTypeDisplayName(ControllerType type)
   return s_controller_display_names[static_cast<int>(type)];
 }
 
-static std::array<const char*, 3> s_memory_card_type_names = {{"None", "Shared", "PerGame"}};
+static std::array<const char*, 4> s_memory_card_type_names = {{"None", "Shared", "PerGame", "PerGameTitle"}};
-static std::array<const char*, 3> s_memory_card_type_display_names = {
+static std::array<const char*, 4> s_memory_card_type_display_names = {{"No Memory Card", "Shared Between All Games",
-  {"No Memory Card", "Shared Between All Games", "Separate Card Per Game"}};
+                                                                       "Separate Card Per Game (Game Code)",
+                                                                       "Seperate Card Per Game (Game Title)"}};
 
 std::optional<MemoryCardType> Settings::ParseMemoryCardTypeName(const char* str)
 {

src/core/system.cpp

@@ -823,6 +823,23 @@ void System::UpdateMemoryCards()
       }
       break;
 
+      case MemoryCardType::PerGameTitle:
+      {
+        if (m_running_game_title.empty())
+        {
+          m_host_interface->AddFormattedOSDMessage(5.0f,
+                                                   "Per-game memory card cannot be used for slot %u as the running "
+                                                   "game has no title. Using shared card instead.",
+                                                   i + 1u);
+          card = MemoryCard::Open(this, m_host_interface->GetSharedMemoryCardPath(i));
+        }
+        else
+        {
+          card = MemoryCard::Open(this, m_host_interface->GetGameMemoryCardPath(m_running_game_title.c_str(), i));
+        }
+      }
+      break;
+
       case MemoryCardType::Shared:
       {
         if (settings.memory_card_paths[i].empty())

src/core/types.h

@@ -96,6 +96,7 @@ enum class MemoryCardType
   None,
   Shared,
   PerGame,
+  PerGameTitle,
   Count
 };