Support adding advanced joypad features

Author: Nintorch

core/input/input.cpp

@@ -986,6 +986,15 @@ void Input::set_joy_axis(int p_device, JoyAxis p_axis, float p_value) {
 	_joy_axis[c] = p_value;
 }
 
+void Input::set_joy_features(int p_device, JoypadFeatures *p_features) {
+	Joypad *joypad = joy_names.getptr(p_device);
+	if (!joypad) {
+		return;
+	}
+	joypad->features = p_features;
+	_update_joypad_features(p_device);
+}
+
 void Input::start_joy_vibration(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration) {
 	_THREAD_SAFE_METHOD_
 	if (p_weak_magnitude < 0.f || p_weak_magnitude > 1.f || p_strong_magnitude < 0.f || p_strong_magnitude > 1.f) {
@@ -1478,6 +1487,15 @@ void Input::_update_action_cache(const StringName &p_action_name, ActionState &r
 	}
 }
 
+void Input::_update_joypad_features(int p_device) {
+	Joypad *joypad = joy_names.getptr(p_device);
+	if (!joypad || joypad->features == nullptr) {
+		return;
+	}
+	// Do something based on the features. For example, we can save the information about
+	// the joypad having motion sensors, LED light, etc.
+}
+
 Input::JoyEvent Input::_get_mapped_button_event(const JoyDeviceMapping &mapping, JoyButton p_button) {
 	JoyEvent event;
 

core/input/input.h

@@ -79,6 +79,15 @@ class Input : public Object {
 		CURSOR_MAX
 	};
 
+	class JoypadFeatures {
+	public:
+		virtual ~JoypadFeatures() {}
+
+		// None at the moment, but later we can add new features like:
+		// virtual bool has_joy_accelerometer() const { return false; }
+		// virtual bool set_joy_accelerometer_enabled(bool p_enable) { return false; }
+	};
+
 	static constexpr int32_t JOYPADS_MAX = 16;
 
 	typedef void (*EventDispatchFunc)(const Ref<InputEvent> &p_event);
@@ -174,6 +183,7 @@ class Input : public Object {
 		int mapping = -1;
 		int hat_current = 0;
 		Dictionary info;
+		Input::JoypadFeatures *features = nullptr;
 	};
 
 	VelocityTrack mouse_velocity_track;
@@ -253,6 +263,7 @@ class Input : public Object {
 	void _button_event(int p_device, JoyButton p_index, bool p_pressed);
 	void _axis_event(int p_device, JoyAxis p_axis, float p_value);
 	void _update_action_cache(const StringName &p_action_name, ActionState &r_action_state);
+	void _update_joypad_features(int p_device);
 
 	void _parse_input_event_impl(const Ref<InputEvent> &p_event, bool p_is_emulated);
 
@@ -346,6 +357,8 @@ class Input : public Object {
 	void set_gyroscope(const Vector3 &p_gyroscope);
 	void set_joy_axis(int p_device, JoyAxis p_axis, float p_value);
 
+	void set_joy_features(int p_device, JoypadFeatures *p_features);
+
 	void start_joy_vibration(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration = 0);
 	void stop_joy_vibration(int p_device);
 	void vibrate_handheld(int p_duration_ms = 500, float p_amplitude = -1.0);

drivers/sdl/SCsub

@@ -178,6 +178,7 @@ if env["builtin_sdl"]:
             "joystick/windows/SDL_xinputjoystick.c",
             "thread/generic/SDL_syscond.c",
             "thread/generic/SDL_sysrwlock.c",
+            "sensor/windows/SDL_windowssensor.c",
             "thread/windows/SDL_syscond_cv.c",
             "thread/windows/SDL_sysmutex.c",
             "thread/windows/SDL_sysrwlock_srw.c",

drivers/sdl/SDL_build_config_private.h

@@ -47,7 +47,6 @@
 #define SDL_DIALOG_DISABLED 1
 #define SDL_FILESYSTEM_DUMMY 1
 #define SDL_FSOPS_DUMMY 1
-#define SDL_SENSOR_DISABLED 1
 #define SDL_GPU_DISABLED 1
 #define SDL_RENDER_DISABLED 1
 #define SDL_POWER_DISABLED 1
@@ -73,6 +72,7 @@
 #define SDL_THREAD_GENERIC_RWLOCK_SUFFIX 1
 #define SDL_THREAD_WINDOWS 1
 #define SDL_TIMER_WINDOWS 1
+#define SDL_SENSOR_WINDOWS 1
 
 // Linux defines
 #elif defined(SDL_PLATFORM_LINUX)
@@ -113,6 +113,7 @@
 #define SDL_HAPTIC_LINUX 1
 #define SDL_TIMER_UNIX 1
 #define SDL_JOYSTICK_LINUX 1
+#define SDL_JOYSTICK_HIDAPI 1
 #define SDL_INPUT_LINUXEV 1
 #define SDL_THREAD_PTHREAD 1
 
@@ -126,8 +127,10 @@
 #define SDL_HAPTIC_IOKIT 1
 #define SDL_JOYSTICK_IOKIT 1
 #define SDL_JOYSTICK_MFI 1
+#define SDL_JOYSTICK_HIDAPI 1
 #define SDL_TIMER_UNIX 1
 #define SDL_THREAD_PTHREAD 1
+#define SDL_THREAD_PTHREAD_RECURSIVE_MUTEX 1
 
 // Other platforms are not supported (for now)
 #else

drivers/sdl/joypad_sdl.cpp

@@ -208,6 +208,8 @@ void JoypadSDL::process_events() {
 						device_name,
 						joypads[joy_id].guid,
 						joypad_info);
+
+				Input::get_singleton()->set_joy_features(joy_id, &joypads[joy_id]);
 			}
 			// An event for an attached joypad
 		} else if (sdl_event.type >= SDL_EVENT_JOYSTICK_AXIS_MOTION && sdl_event.type < SDL_EVENT_FINGER_DOWN && sdl_instance_id_to_joypad_id.has(sdl_event.jdevice.which)) {
@@ -299,4 +301,12 @@ void JoypadSDL::close_joypad(int p_pad_idx) {
 	}
 }
 
+SDL_Joystick *JoypadSDL::Joypad::get_sdl_joystick() const {
+	return SDL_GetJoystickFromID(sdl_instance_idx);
+}
+
+SDL_Gamepad *JoypadSDL::Joypad::get_sdl_gamepad() const {
+	return SDL_GetGamepadFromID(sdl_instance_idx);
+}
+
 #endif // SDL_ENABLED

drivers/sdl/joypad_sdl.h

@@ -35,6 +35,8 @@
 
 typedef uint32_t SDL_JoystickID;
 typedef struct HWND__ *HWND;
+typedef struct SDL_Joystick SDL_Joystick;
+typedef struct SDL_Gamepad SDL_Gamepad;
 
 class JoypadSDL {
 public:
@@ -50,14 +52,18 @@ class JoypadSDL {
 	void process_events();
 
 private:
-	struct Joypad {
+	class Joypad : public Input::JoypadFeatures {
+	public:
 		bool attached = false;
 		StringName guid;
 
 		SDL_JoystickID sdl_instance_idx;
 
 		bool supports_force_feedback = false;
 		uint64_t ff_effect_timestamp = 0;
+
+		SDL_Joystick *get_sdl_joystick() const;
+		SDL_Gamepad *get_sdl_gamepad() const;
 	};
 
 	static JoypadSDL *singleton;