Split MemoryCard and PadDevice (now Controller)

src/core/controller.cpp

@@ -0,0 +1,38 @@
+#include "controller.h"
+#include "common/state_wrapper.h"
+#include "digital_controller.h"
+
+Controller::Controller() = default;
+
+Controller::~Controller() = default;
+
+void Controller::Reset() {}
+
+bool Controller::DoState(StateWrapper& sw)
+{
+  return !sw.HasError();
+}
+
+void Controller::ResetTransferState() {}
+
+bool Controller::Transfer(const u8 data_in, u8* data_out)
+{
+  *data_out = 0xFF;
+  return false;
+}
+
+std::shared_ptr<Controller> Controller::Create(std::string_view type_name)
+{
+  if (type_name == "DigitalController")
+    return DigitalController::Create();
+
+  return {};
+}
+
+std::optional<s32> Controller::GetButtonCodeByName(std::string_view type_name, std::string_view button_name)
+{
+  if (type_name == "DigitalController")
+    return DigitalController::GetButtonCodeByName(button_name);
+
+  return {};
+}