Controller: Add a set-button interface in base class

src/core/controller.cpp

@@ -21,6 +21,8 @@ bool Controller::Transfer(const u8 data_in, u8* data_out)
   return false;
 }
 
+void Controller::SetButtonState(s32 button_code, bool pressed) {}
+
 std::shared_ptr<Controller> Controller::Create(std::string_view type_name)
 {
   if (type_name == "DigitalController")

src/core/controller.h

@@ -20,6 +20,9 @@ public:
   // Returns the value of ACK, as well as filling out_data.
   virtual bool Transfer(const u8 data_in, u8* data_out);
 
+  /// Changes the specified button state.
+  virtual void SetButtonState(s32 button_code, bool pressed);
+
   /// Creates a new controller of the specified type.
   static std::shared_ptr<Controller> Create(std::string_view type_name);
 

src/core/digital_controller.cpp

@@ -14,6 +14,14 @@ void DigitalController::SetButtonState(Button button, bool pressed)
     m_button_state |= u16(1) << static_cast<u8>(button);
 }
 
+void DigitalController::SetButtonState(s32 button_code, bool pressed)
+{
+  if (button_code < 0 || button_code >= static_cast<s32>(Button::Count))
+    return;
+
+  SetButtonState(static_cast<Button>(button_code), pressed);
+}
+
 void DigitalController::ResetTransferState()
 {
   m_transfer_state = TransferState::Idle;

src/core/digital_controller.h

@@ -24,7 +24,8 @@ public:
     Triangle = 12,
     Circle = 13,
     Cross = 14,
-    Square = 15
+    Square = 15,
+    Count
   };
 
   DigitalController();
@@ -34,6 +35,7 @@ public:
   static std::optional<s32> GetButtonCodeByName(std::string_view button_name);
 
   void SetButtonState(Button button, bool pressed);
+  void SetButtonState(s32 button_code, bool pressed);
 
   void ResetTransferState() override;
   bool Transfer(const u8 data_in, u8* data_out) override;