UI: Massive revamp, new features and improvements

src/core/guncon.h

@@ -0,0 +1,68 @@
+#pragma once
+#include "controller.h"
+#include <memory>
+#include <optional>
+#include <string_view>
+
+class GunCon final : public Controller
+{
+public:
+  enum class Button : u8
+  {
+    Trigger = 0,
+    A = 1,
+    B = 2,
+    ShootOffscreen = 3,
+    Count
+  };
+
+  static const Controller::ControllerInfo INFO;
+
+  GunCon(u32 index);
+  ~GunCon() override;
+
+  static std::unique_ptr<GunCon> Create(u32 index);
+
+  ControllerType GetType() const override;
+
+  void Reset() override;
+  bool DoState(StateWrapper& sw, bool apply_input_state) override;
+  
+  void LoadSettings(SettingsInterface& si, const char* section) override;
+  bool GetSoftwareCursor(const Common::RGBA8Image** image, float* image_scale, bool* relative_mode) override;
+
+  float GetBindState(u32 index) const override;
+  void SetBindState(u32 index, float value) override;
+
+  void ResetTransferState() override;
+  bool Transfer(const u8 data_in, u8* data_out) override;
+
+private:
+  void UpdatePosition();
+
+  enum class TransferState : u8
+  {
+    Idle,
+    Ready,
+    IDMSB,
+    ButtonsLSB,
+    ButtonsMSB,
+    XLSB,
+    XMSB,
+    YLSB,
+    YMSB
+  };
+
+  Common::RGBA8Image m_crosshair_image;
+  std::string m_crosshair_image_path;
+  float m_crosshair_image_scale = 1.0f;
+  float m_x_scale = 1.0f;
+
+  // buttons are active low
+  u16 m_button_state = UINT16_C(0xFFFF);
+  u16 m_position_x = 0;
+  u16 m_position_y = 0;
+  bool m_shoot_offscreen = false;
+
+  TransferState m_transfer_state = TransferState::Idle;
+};