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;
}
bool Input::update()
{
m_uLastInput = m_uCurrentInput;
if (false == m_bJoystickAttached)
{
int iGamePads = emscripten_get_num_gamepads();
Log::instance()->logMessage("Gamepads %d", iGamePads);
if (iGamePads > 0)
{
m_bJoystickAttached = true;
}
}
return true;
}
void FHTML5InputInterface::SendControllerEvents()
{
#if PLATFORM_HTML5_BROWSER
// game pads can only be polled.
static int PrevNumGamepads = 0;
static bool GamepadSupported = true;
const double CurrentTime = FPlatformTime::Seconds();
if (GamepadSupported)
{
int NumGamepads = emscripten_get_num_gamepads();
if (NumGamepads != PrevNumGamepads)
{
if (NumGamepads == EMSCRIPTEN_RESULT_NOT_SUPPORTED)
{
GamepadSupported = false;
return;
}
}
for(int CurrentGamePad = 0; CurrentGamePad < NumGamepads && CurrentGamePad < 5; ++CurrentGamePad) // max 5 game pads.
{
EmscriptenGamepadEvent GamePadEvent;
int Failed = emscripten_get_gamepad_status(CurrentGamePad, &GamePadEvent);
if (!Failed)
{
check(CurrentGamePad == GamePadEvent.index);
for(int CurrentAxis = 0; CurrentAxis < GamePadEvent.numAxes; ++CurrentAxis)
{
if (GamePadEvent.axis[CurrentAxis] != PrevGamePadState[CurrentGamePad].axis[CurrentAxis])
{
MessageHandler->OnControllerAnalog(AxisMapping[CurrentAxis],CurrentGamePad, Reversed[CurrentAxis]*GamePadEvent.axis[CurrentAxis]);
}
}
// edge trigger.
for(int CurrentButton = 0; CurrentButton < GamePadEvent.numButtons; ++CurrentButton)
{
// trigger for digital buttons.
if ( GamePadEvent.digitalButton[CurrentButton] != PrevGamePadState[CurrentGamePad].digitalButton[CurrentButton] )
{
bool Triggered = GamePadEvent.digitalButton[CurrentButton] != 0;
if ( Triggered )
{
MessageHandler->OnControllerButtonPressed(ButtonMapping[CurrentButton],CurrentGamePad, false);
LastPressedTime[CurrentGamePad][CurrentButton] = CurrentTime;
}
else
{
MessageHandler->OnControllerButtonReleased(ButtonMapping[CurrentButton],CurrentGamePad, false);
}
}
}
// repeat trigger.
const float RepeatDelta = 0.2f;
for(int CurrentButton = 0; CurrentButton < GamePadEvent.numButtons; ++CurrentButton)
{
if ( GamePadEvent.digitalButton[CurrentButton] )
{
if (CurrentTime - LastPressedTime[CurrentGamePad][CurrentButton] > RepeatDelta)
{
MessageHandler->OnControllerButtonPressed(ButtonMapping[CurrentButton],CurrentGamePad, true);
LastPressedTime[CurrentGamePad][CurrentButton] = CurrentTime;
}
}
}
PrevGamePadState[CurrentGamePad] = GamePadEvent;
}
}
}
#endif
}
static void rwebpad_joypad_poll(void)
{
/* this call makes emscripten poll gamepad state */
(void)emscripten_get_num_gamepads();
}
