Wiimote: Separate the Wiimote index in the Input system from the index of the Wiimote in the emulated system.

Source/Core/Core/HW/WiimoteCommon/WiimoteHid.h

@@ -30,6 +30,9 @@ public:
   virtual void EventLinked() = 0;
   virtual void EventUnlinked() = 0;
 
+  virtual u8 GetWiimoteDeviceIndex() const = 0;
+  virtual void SetWiimoteDeviceIndex(u8 index) = 0;
+
   // Called every ~200hz after HID channels are established.
   virtual void Update() = 0;
 

Source/Core/Core/HW/WiimoteEmu/WiimoteEmu.cpp

@@ -209,7 +209,7 @@ void Wiimote::Reset()
   m_imu_cursor_state = {};
 }
 
-Wiimote::Wiimote(const unsigned int index) : m_index(index)
+Wiimote::Wiimote(const unsigned int index) : m_index(index), m_bt_device_index(index)
 {
   // Buttons
   groups.emplace_back(m_buttons = new ControllerEmu::Buttons(_trans("Buttons")));
@@ -489,6 +489,16 @@ DesiredWiimoteState Wiimote::BuildDesiredWiimoteState()
   return wiimote_state;
 }
 
+u8 Wiimote::GetWiimoteDeviceIndex() const
+{
+  return m_bt_device_index;
+}
+
+void Wiimote::SetWiimoteDeviceIndex(u8 index)
+{
+  m_bt_device_index = index;
+}
+
 // This is called every ::Wiimote::UPDATE_FREQ (200hz)
 void Wiimote::Update()
 {
@@ -551,7 +561,8 @@ void Wiimote::SendDataReport(const DesiredWiimoteState& target_state)
   DataReportBuilder rpt_builder(m_reporting_mode);
 
   if (Movie::IsPlayingInput() &&
-      Movie::PlayWiimote(m_index, rpt_builder, m_active_extension, GetExtensionEncryptionKey()))
+      Movie::PlayWiimote(m_bt_device_index, rpt_builder, m_active_extension,
+                         GetExtensionEncryptionKey()))
   {
     // Update buttons in status struct from movie:
     rpt_builder.GetCoreData(&m_status.buttons);
@@ -619,7 +630,8 @@ void Wiimote::SendDataReport(const DesiredWiimoteState& target_state)
       }
     }
 
-    Movie::CallWiiInputManip(rpt_builder, m_index, m_active_extension, GetExtensionEncryptionKey());
+    Movie::CallWiiInputManip(rpt_builder, m_bt_device_index, m_active_extension,
+                             GetExtensionEncryptionKey());
   }
 
   if (NetPlay::IsNetPlayRunning())
@@ -631,7 +643,8 @@ void Wiimote::SendDataReport(const DesiredWiimoteState& target_state)
     rpt_builder.GetCoreData(&m_status.buttons);
   }
 
-  Movie::CheckWiimoteStatus(m_index, rpt_builder, m_active_extension, GetExtensionEncryptionKey());
+  Movie::CheckWiimoteStatus(m_bt_device_index, rpt_builder, m_active_extension,
+                            GetExtensionEncryptionKey());
 
   // Send the report:
   InterruptDataInputCallback(rpt_builder.GetDataPtr(), rpt_builder.GetDataSize());

Source/Core/Core/HW/WiimoteEmu/WiimoteEmu.h

@@ -129,6 +129,9 @@ public:
   ControllerEmu::ControlGroup* GetTaTaConGroup(TaTaConGroup group) const;
   ControllerEmu::ControlGroup* GetShinkansenGroup(ShinkansenGroup group) const;
 
+  u8 GetWiimoteDeviceIndex() const override;
+  void SetWiimoteDeviceIndex(u8 index) override;
+
   void Update() override;
   void EventLinked() override;
   void EventUnlinked() override;
@@ -281,9 +284,15 @@ private:
 
   ExtensionPort m_extension_port{&m_i2c_bus};
 
-  // Wiimote index, 0-3
+  // Wiimote index, 0-3.
+  // Can also be 4 for Balance Board.
+  // This is used to look up the user button config.
   const u8 m_index;
 
+  // The Bluetooth 'slot' this device is connected to.
+  // This is usually the same as m_index, but can differ during Netplay.
+  u8 m_bt_device_index;
+
   WiimoteCommon::InputReportID m_reporting_mode;
   bool m_reporting_continuous;
 

Source/Core/Core/HW/WiimoteReal/WiimoteReal.cpp

@@ -450,6 +450,16 @@ Report& Wiimote::ProcessReadQueue(bool repeat_last_data_report)
   return m_last_input_report;
 }
 
+u8 Wiimote::GetWiimoteDeviceIndex() const
+{
+  return m_bt_device_index;
+}
+
+void Wiimote::SetWiimoteDeviceIndex(u8 index)
+{
+  m_bt_device_index = index;
+}
+
 void Wiimote::Update()
 {
   // Wii remotes send input at 200hz once a Wii enables "sniff mode" on the connection.

Source/Core/Core/HW/WiimoteReal/WiimoteReal.h

@@ -62,6 +62,10 @@ public:
   bool IsBalanceBoard();
 
   void InterruptDataOutput(const u8* data, const u32 size) override;
+
+  u8 GetWiimoteDeviceIndex() const override;
+  void SetWiimoteDeviceIndex(u8 index) override;
+
   void Update() override;
   void EventLinked() override;
   void EventUnlinked() override;
@@ -98,6 +102,8 @@ protected:
   // This is not enabled on all platforms as connecting a Wiimote can be a pain on some platforms.
   bool m_really_disconnect = false;
 
+  u8 m_bt_device_index = 0;
+
 private:
   void Read();
   bool Write();

Source/Core/Core/IOS/USB/Bluetooth/BTEmu.cpp

@@ -58,7 +58,7 @@ BluetoothEmuDevice::BluetoothEmuDevice(Kernel& ios, const std::string& device_na
     DEBUG_LOG_FMT(IOS_WIIMOTE, "Wii Remote {} BT ID {:x},{:x},{:x},{:x},{:x},{:x}", i, tmp_bd[0],
                   tmp_bd[1], tmp_bd[2], tmp_bd[3], tmp_bd[4], tmp_bd[5]);
 
-    m_wiimotes.emplace_back(std::make_unique<WiimoteDevice>(this, i, tmp_bd));
+    m_wiimotes.emplace_back(std::make_unique<WiimoteDevice>(this, tmp_bd, i));
   }
 
   bt_dinf.num_registered = MAX_BBMOTES;

Source/Core/Core/IOS/USB/Bluetooth/WiimoteDevice.cpp

@@ -54,24 +54,28 @@ private:
 
 constexpr int CONNECTION_MESSAGE_TIME = 3000;
 
-WiimoteDevice::WiimoteDevice(BluetoothEmuDevice* host, int number, bdaddr_t bd)
+WiimoteDevice::WiimoteDevice(BluetoothEmuDevice* host, bdaddr_t bd, unsigned int hid_source_number)
     : m_host(host), m_bd(bd),
-      m_name(number == WIIMOTE_BALANCE_BOARD ? "Nintendo RVL-WBC-01" : "Nintendo RVL-CNT-01")
+      m_name(GetNumber() == WIIMOTE_BALANCE_BOARD ? "Nintendo RVL-WBC-01" : "Nintendo RVL-CNT-01")
 
 {
-  INFO_LOG_FMT(IOS_WIIMOTE, "Wiimote: #{} Constructed", number);
+  INFO_LOG_FMT(IOS_WIIMOTE, "Wiimote: #{} Constructed", GetNumber());
 
-  m_link_key.fill(0xa0 + number);
+  m_link_key.fill(0xa0 + GetNumber());
   m_class = {0x00, 0x04, 0x48};
   m_features = {0xBC, 0x02, 0x04, 0x38, 0x08, 0x00, 0x00, 0x00};
   m_lmp_version = 0x2;
   m_lmp_subversion = 0x229;
 
-  const auto hid_source = WiimoteCommon::GetHIDWiimoteSource(GetNumber());
+  const auto hid_source = WiimoteCommon::GetHIDWiimoteSource(hid_source_number);
 
-  // UGLY: This prevents an OSD message in SetSource -> Activate.
   if (hid_source)
+  {
+    hid_source->SetWiimoteDeviceIndex(GetNumber());
+
+    // UGLY: This prevents an OSD message in SetSource -> Activate.
     SetBasebandState(BasebandState::RequestConnection);
+  }
 
   SetSource(hid_source);
 }

Source/Core/Core/IOS/USB/Bluetooth/WiimoteDevice.h

@@ -24,7 +24,7 @@ public:
   using FeaturesType = std::array<u8, HCI_FEATURES_SIZE>;
   using LinkKeyType = std::array<u8, HCI_KEY_SIZE>;
 
-  WiimoteDevice(BluetoothEmuDevice* host, int number, bdaddr_t bd);
+  WiimoteDevice(BluetoothEmuDevice* host, bdaddr_t bd, unsigned int hid_source_number);
   ~WiimoteDevice();
 
   WiimoteDevice(const WiimoteDevice&) = delete;