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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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69
test/testgamecontroller.c
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@@ -98,26 +98,48 @@ LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent)
}
static void
UpdateWindowTitle()
InitGameController()
{
const char *name = SDL_GameControllerName(gamecontroller);
const char *serial = SDL_GameControllerGetSerial(gamecontroller);
const char *basetitle = "Game Controller Test: ";
const size_t titlelen = SDL_strlen(basetitle) + SDL_strlen(name) + (serial ? 3 + SDL_strlen(serial) : 0) + 1;
char *title = (char *)SDL_malloc(titlelen);
retval = SDL_FALSE;
done = SDL_FALSE;
SDL_Log("Opened game controller %s\n", name);
if (title) {
SDL_snprintf(title, titlelen, "%s%s", basetitle, name);
if (serial) {
SDL_strlcat(title, " (", titlelen);
SDL_strlcat(title, serial, titlelen);
SDL_strlcat(title, ")", titlelen);
if (SDL_GameControllerHasSensor(gamecontroller, SDL_SENSOR_ACCEL)) {
SDL_Log("Enabling accelerometer\n");
SDL_GameControllerSetSensorEnabled(gamecontroller, SDL_SENSOR_ACCEL, SDL_TRUE);
}
if (SDL_GameControllerHasSensor(gamecontroller, SDL_SENSOR_GYRO)) {
SDL_Log("Enabling gyro\n");
SDL_GameControllerSetSensorEnabled(gamecontroller, SDL_SENSOR_GYRO, SDL_TRUE);
}
}
static void
UpdateWindowTitle()
{
if (gamecontroller) {
const char *name = SDL_GameControllerName(gamecontroller);
const char *serial = SDL_GameControllerGetSerial(gamecontroller);
const char *basetitle = "Game Controller Test: ";
const size_t titlelen = SDL_strlen(basetitle) + SDL_strlen(name) + (serial ? 3 + SDL_strlen(serial) : 0) + 1;
char *title = (char *)SDL_malloc(titlelen);
retval = SDL_FALSE;
done = SDL_FALSE;
if (title) {
SDL_snprintf(title, titlelen, "%s%s", basetitle, name);
if (serial) {
SDL_strlcat(title, " (", titlelen);
SDL_strlcat(title, serial, titlelen);
SDL_strlcat(title, ")", titlelen);
}
SDL_SetWindowTitle(window, title);
SDL_free(title);
}
SDL_SetWindowTitle(window, title);
SDL_free(title);
} else {
SDL_SetWindowTitle(window, "Waiting for controller...");
}
}
@@ -146,10 +168,11 @@ loop(void *arg)
if (!gamecontroller) {
gamecontroller = SDL_GameControllerOpen(event.cdevice.which);
if (gamecontroller) {
UpdateWindowTitle();
InitGameController();
} else {
SDL_Log("Couldn't open controller: %s\n", SDL_GetError());
}
UpdateWindowTitle();
}
break;
@@ -159,8 +182,9 @@ loop(void *arg)
SDL_GameControllerClose(gamecontroller);
gamecontroller = SDL_GameControllerOpen(0);
if (gamecontroller) {
UpdateWindowTitle();
InitGameController();
}
UpdateWindowTitle();
}
break;
@@ -178,6 +202,15 @@ loop(void *arg)
event.ctouchpad.pressure);
break;
case SDL_CONTROLLERSENSORUPDATE:
SDL_Log("Controller sensor %s: %.2f, %.2f, %.2f\n",
event.csensor.sensor == SDL_SENSOR_ACCEL ? "accelerometer" :
event.csensor.sensor == SDL_SENSOR_GYRO ? "gyro" : "unknown",
event.csensor.data[0],
event.csensor.data[1],
event.csensor.data[2]);
break;
case SDL_CONTROLLERAXISMOTION:
SDL_Log("Controller axis %s changed to %d\n", SDL_GameControllerGetStringForAxis((SDL_GameControllerAxis)event.caxis.axis), event.caxis.value);
break;
@@ -414,6 +447,8 @@ main(int argc, char *argv[])
/* !!! FIXME: */
/*SDL_RenderSetLogicalSize(screen, background->w, background->h);*/
UpdateWindowTitle();
/* Loop, getting controller events! */
#ifdef __EMSCRIPTEN__
emscripten_set_main_loop_arg(loop, NULL, 0, 1);