static bool rwebpad_joypad_init(void *data)
{
int supported = emscripten_get_num_gamepads();
(void)data;
if (supported == EMSCRIPTEN_RESULT_NOT_SUPPORTED)
return false;
if (!g_rwebpad_initialized)
{
EMSCRIPTEN_RESULT r;
g_rwebpad_initialized = true;
/* callbacks needs to be registered for gamepads to connect */
r = emscripten_set_gamepadconnected_callback(NULL, false,
rwebpad_gamepad_cb);
if (r != EMSCRIPTEN_RESULT_SUCCESS)
{
RARCH_ERR(
"[EMSCRIPTEN/PAD] failed to create connect callback: %d\n", r);
}
r = emscripten_set_gamepaddisconnected_callback(NULL, false,
rwebpad_gamepad_cb);
if (r != EMSCRIPTEN_RESULT_SUCCESS)
{
RARCH_ERR(
"[EMSCRIPTEN/PAD] failed to create disconnect callback: %d\n", r);
}
}
return true;
}
/* Function to scan the system for joysticks.
* It should return 0, or -1 on an unrecoverable fatal error.
*/
int
SDL_SYS_JoystickInit(void)
{
int retval, i, numjs;
EmscriptenGamepadEvent gamepadState;
numjoysticks = 0;
numjs = emscripten_get_num_gamepads();
/* Check if gamepad is supported by browser */
if (numjs == EMSCRIPTEN_RESULT_NOT_SUPPORTED) {
return SDL_SetError("Gamepads not supported");
}
/* handle already connected gamepads */
if (numjs > 0) {
for(i = 0; i < numjs; i++) {
retval = emscripten_get_gamepad_status(i, &gamepadState);
if (retval == EMSCRIPTEN_RESULT_SUCCESS) {
Emscripten_JoyStickConnected(EMSCRIPTEN_EVENT_GAMEPADCONNECTED,
&gamepadState,
NULL);
}
}
}
retval = emscripten_set_gamepadconnected_callback(NULL,
0,
Emscripten_JoyStickConnected);
if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
SDL_SYS_JoystickQuit();
return SDL_SetError("Could not set gamepad connect callback");
}
retval = emscripten_set_gamepaddisconnected_callback(NULL,
0,
Emscripten_JoyStickDisconnected);
if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
SDL_SYS_JoystickQuit();
return SDL_SetError("Could not set gamepad disconnect callback");
}
return 0;
}
/* Function to perform any system-specific joystick related cleanup */
void
SDL_SYS_JoystickQuit(void)
{
SDL_joylist_item *item = NULL;
SDL_joylist_item *next = NULL;
for (item = SDL_joylist; item; item = next) {
next = item->next;
SDL_free(item->mapping);
SDL_free(item->name);
SDL_free(item);
}
SDL_joylist = SDL_joylist_tail = NULL;
numjoysticks = 0;
instance_counter = 0;
emscripten_set_gamepadconnected_callback(NULL, 0, NULL);
emscripten_set_gamepaddisconnected_callback(NULL, 0, NULL);
}