--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDL3/SDL_sensor.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,321 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ * # CategorySensor
+ *
+ * SDL sensor management.
+ *
+ * These APIs grant access to gyros and accelerometers on various platforms.
+ *
+ * In order to use these functions, SDL_Init() must have been called with the
+ * SDL_INIT_SENSOR flag. This causes SDL to scan the system for sensors, and
+ * load appropriate drivers.
+ */
+
+#ifndef SDL_sensor_h_
+#define SDL_sensor_h_
+
+#include <SDL3/SDL_stdinc.h>
+#include <SDL3/SDL_error.h>
+#include <SDL3/SDL_properties.h>
+
+#include <SDL3/SDL_begin_code.h>
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+/**
+ * The opaque structure used to identify an opened SDL sensor.
+ *
+ * \since This struct is available since SDL 3.2.0.
+ */
+typedef struct SDL_Sensor SDL_Sensor;
+
+/**
+ * This is a unique ID for a sensor for the time it is connected to the
+ * system, and is never reused for the lifetime of the application.
+ *
+ * The value 0 is an invalid ID.
+ *
+ * \since This datatype is available since SDL 3.2.0.
+ */
+typedef Uint32 SDL_SensorID;
+
+/**
+ * A constant to represent standard gravity for accelerometer sensors.
+ *
+ * The accelerometer returns the current acceleration in SI meters per second
+ * squared. This measurement includes the force of gravity, so a device at
+ * rest will have an value of SDL_STANDARD_GRAVITY away from the center of the
+ * earth, which is a positive Y value.
+ *
+ * \since This macro is available since SDL 3.2.0.
+ */
+#define SDL_STANDARD_GRAVITY    9.80665f
+
+/**
+ * The different sensors defined by SDL.
+ *
+ * Additional sensors may be available, using platform dependent semantics.
+ *
+ * Here are the additional Android sensors:
+ *
+ * https://developer.android.com/reference/android/hardware/SensorEvent.html#values
+ *
+ * Accelerometer sensor notes:
+ *
+ * The accelerometer returns the current acceleration in SI meters per second
+ * squared. This measurement includes the force of gravity, so a device at
+ * rest will have an value of SDL_STANDARD_GRAVITY away from the center of the
+ * earth, which is a positive Y value.
+ *
+ * - `values[0]`: Acceleration on the x axis
+ * - `values[1]`: Acceleration on the y axis
+ * - `values[2]`: Acceleration on the z axis
+ *
+ * For phones and tablets held in natural orientation and game controllers
+ * held in front of you, the axes are defined as follows:
+ *
+ * - -X ... +X : left ... right
+ * - -Y ... +Y : bottom ... top
+ * - -Z ... +Z : farther ... closer
+ *
+ * The accelerometer axis data is not changed when the device is rotated.
+ *
+ * Gyroscope sensor notes:
+ *
+ * The gyroscope returns the current rate of rotation in radians per second.
+ * The rotation is positive in the counter-clockwise direction. That is, an
+ * observer looking from a positive location on one of the axes would see
+ * positive rotation on that axis when it appeared to be rotating
+ * counter-clockwise.
+ *
+ * - `values[0]`: Angular speed around the x axis (pitch)
+ * - `values[1]`: Angular speed around the y axis (yaw)
+ * - `values[2]`: Angular speed around the z axis (roll)
+ *
+ * For phones and tablets held in natural orientation and game controllers
+ * held in front of you, the axes are defined as follows:
+ *
+ * - -X ... +X : left ... right
+ * - -Y ... +Y : bottom ... top
+ * - -Z ... +Z : farther ... closer
+ *
+ * The gyroscope axis data is not changed when the device is rotated.
+ *
+ * \since This enum is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetCurrentDisplayOrientation
+ */
+typedef enum SDL_SensorType
+{
+    SDL_SENSOR_INVALID = -1,    /**< Returned for an invalid sensor */
+    SDL_SENSOR_UNKNOWN,         /**< Unknown sensor type */
+    SDL_SENSOR_ACCEL,           /**< Accelerometer */
+    SDL_SENSOR_GYRO,            /**< Gyroscope */
+    SDL_SENSOR_ACCEL_L,         /**< Accelerometer for left Joy-Con controller and Wii nunchuk */
+    SDL_SENSOR_GYRO_L,          /**< Gyroscope for left Joy-Con controller */
+    SDL_SENSOR_ACCEL_R,         /**< Accelerometer for right Joy-Con controller */
+    SDL_SENSOR_GYRO_R,          /**< Gyroscope for right Joy-Con controller */
+    SDL_SENSOR_COUNT
+} SDL_SensorType;
+
+
+/* Function prototypes */
+
+/**
+ * Get a list of currently connected sensors.
+ *
+ * \param count a pointer filled in with the number of sensors returned, may
+ *              be NULL.
+ * \returns a 0 terminated array of sensor instance IDs or NULL on failure;
+ *          call SDL_GetError() for more information. This should be freed
+ *          with SDL_free() when it is no longer needed.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_SensorID * SDLCALL SDL_GetSensors(int *count);
+
+/**
+ * Get the implementation dependent name of a sensor.
+ *
+ * This can be called before any sensors are opened.
+ *
+ * \param instance_id the sensor instance ID.
+ * \returns the sensor name, or NULL if `instance_id` is not valid.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC const char * SDLCALL SDL_GetSensorNameForID(SDL_SensorID instance_id);
+
+/**
+ * Get the type of a sensor.
+ *
+ * This can be called before any sensors are opened.
+ *
+ * \param instance_id the sensor instance ID.
+ * \returns the SDL_SensorType, or `SDL_SENSOR_INVALID` if `instance_id` is
+ *          not valid.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_SensorType SDLCALL SDL_GetSensorTypeForID(SDL_SensorID instance_id);
+
+/**
+ * Get the platform dependent type of a sensor.
+ *
+ * This can be called before any sensors are opened.
+ *
+ * \param instance_id the sensor instance ID.
+ * \returns the sensor platform dependent type, or -1 if `instance_id` is not
+ *          valid.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_GetSensorNonPortableTypeForID(SDL_SensorID instance_id);
+
+/**
+ * Open a sensor for use.
+ *
+ * \param instance_id the sensor instance ID.
+ * \returns an SDL_Sensor object or NULL on failure; call SDL_GetError() for
+ *          more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_Sensor * SDLCALL SDL_OpenSensor(SDL_SensorID instance_id);
+
+/**
+ * Return the SDL_Sensor associated with an instance ID.
+ *
+ * \param instance_id the sensor instance ID.
+ * \returns an SDL_Sensor object or NULL on failure; call SDL_GetError() for
+ *          more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_Sensor * SDLCALL SDL_GetSensorFromID(SDL_SensorID instance_id);
+
+/**
+ * Get the properties associated with a sensor.
+ *
+ * \param sensor the SDL_Sensor object.
+ * \returns a valid property ID on success or 0 on failure; call
+ *          SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_PropertiesID SDLCALL SDL_GetSensorProperties(SDL_Sensor *sensor);
+
+/**
+ * Get the implementation dependent name of a sensor.
+ *
+ * \param sensor the SDL_Sensor object.
+ * \returns the sensor name or NULL on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC const char * SDLCALL SDL_GetSensorName(SDL_Sensor *sensor);
+
+/**
+ * Get the type of a sensor.
+ *
+ * \param sensor the SDL_Sensor object to inspect.
+ * \returns the SDL_SensorType type, or `SDL_SENSOR_INVALID` if `sensor` is
+ *          NULL.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_SensorType SDLCALL SDL_GetSensorType(SDL_Sensor *sensor);
+
+/**
+ * Get the platform dependent type of a sensor.
+ *
+ * \param sensor the SDL_Sensor object to inspect.
+ * \returns the sensor platform dependent type, or -1 if `sensor` is NULL.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_GetSensorNonPortableType(SDL_Sensor *sensor);
+
+/**
+ * Get the instance ID of a sensor.
+ *
+ * \param sensor the SDL_Sensor object to inspect.
+ * \returns the sensor instance ID, or 0 on failure; call SDL_GetError() for
+ *          more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_SensorID SDLCALL SDL_GetSensorID(SDL_Sensor *sensor);
+
+/**
+ * Get the current state of an opened sensor.
+ *
+ * The number of values and interpretation of the data is sensor dependent.
+ *
+ * \param sensor the SDL_Sensor object to query.
+ * \param data a pointer filled with the current sensor state.
+ * \param num_values the number of values to write to data.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetSensorData(SDL_Sensor *sensor, float *data, int num_values);
+
+/**
+ * Close a sensor previously opened with SDL_OpenSensor().
+ *
+ * \param sensor the SDL_Sensor object to close.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC void SDLCALL SDL_CloseSensor(SDL_Sensor *sensor);
+
+/**
+ * Update the current state of the open sensors.
+ *
+ * This is called automatically by the event loop if sensor events are
+ * enabled.
+ *
+ * This needs to be called from the thread that initialized the sensor
+ * subsystem.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC void SDLCALL SDL_UpdateSensors(void);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+#include <SDL3/SDL_close_code.h>
+
+#endif /* SDL_sensor_h_ */