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Added API for sensors on game controllers

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Added support for the PS4 controller gyro and accelerometer on iOS and HIDAPI drivers

Also fixed an issue with the accelerometer on iOS having inverted axes
This commit is contained in:
Sam Lantinga 2020-11-17 10:30:20 -08:00
parent b79e1baa36
commit fcb21aa883
33 changed files with 810 additions and 118 deletions
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105
src/joystick/SDL_gamecontroller.c
View file

@ -2059,6 +2059,111 @@ SDL_GameControllerGetTouchpadFinger(SDL_GameController *gamecontroller, int touc
}
}
/**
* Return whether a game controller has a particular sensor.
*/
SDL_bool
SDL_GameControllerHasSensor(SDL_GameController *gamecontroller, SDL_SensorType type)
{
SDL_Joystick *joystick = SDL_GameControllerGetJoystick(gamecontroller);
int i;
if (joystick) {
for (i = 0; i < joystick->nsensors; ++i) {
if (joystick->sensors[i].type == type) {
return SDL_TRUE;
}
}
}
return SDL_FALSE;
}
/*
* Set whether data reporting for a game controller sensor is enabled
*/
int SDL_GameControllerSetSensorEnabled(SDL_GameController *gamecontroller, SDL_SensorType type, SDL_bool enabled)
{
SDL_Joystick *joystick = SDL_GameControllerGetJoystick(gamecontroller);
int i;
if (!joystick) {
return SDL_InvalidParamError("gamecontroller");
}
for (i = 0; i < joystick->nsensors; ++i) {
SDL_JoystickSensorInfo *sensor = &joystick->sensors[i];
if (sensor->type == type) {
if (sensor->enabled == enabled) {
return 0;
}
if (enabled) {
if (joystick->nsensors_enabled == 0) {
if (joystick->driver->SetSensorsEnabled(joystick, SDL_TRUE) < 0) {
return -1;
}
}
++joystick->nsensors_enabled;
} else {
if (joystick->nsensors_enabled == 1) {
if (joystick->driver->SetSensorsEnabled(joystick, SDL_FALSE) < 0) {
return -1;
}
}
--joystick->nsensors_enabled;
}
sensor->enabled = enabled;
return 0;
}
}
return SDL_Unsupported();
}
/*
* Query whether sensor data reporting is enabled for a game controller
*/
SDL_bool SDL_GameControllerIsSensorEnabled(SDL_GameController *gamecontroller, SDL_SensorType type)
{
SDL_Joystick *joystick = SDL_GameControllerGetJoystick(gamecontroller);
int i;
if (joystick) {
for (i = 0; i < joystick->nsensors; ++i) {
if (joystick->sensors[i].type == type) {
return joystick->sensors[i].enabled;
}
}
}
return SDL_FALSE;
}
/*
* Get the current state of a game controller sensor.
*/
int
SDL_GameControllerGetSensorData(SDL_GameController *gamecontroller, SDL_SensorType type, float *data, int num_values)
{
SDL_Joystick *joystick = SDL_GameControllerGetJoystick(gamecontroller);
int i;
if (!joystick) {
return SDL_InvalidParamError("gamecontroller");
}
for (i = 0; i < joystick->nsensors; ++i) {
SDL_JoystickSensorInfo *sensor = &joystick->sensors[i];
if (sensor->type == type) {
num_values = SDL_min(num_values, SDL_arraysize(sensor->data));
SDL_memcpy(data, sensor->data, num_values*sizeof(*data));
return 0;
}
}
return SDL_Unsupported();
}
const char *
SDL_GameControllerName(SDL_GameController *gamecontroller)
{