Fixes#17004
Currently the keydown and keyup messages are handled with method like this:
if ((source & InputDevice.SOURCE_JOYSTICK) == InputDevice.SOURCE_JOYSTICK
|| (source & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD
|| (source & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD) {
// joystick input
}
else
{
// keyboard input
}
The constant for SOURCE_DPAD is 513
10 0000 0001
and the constant for SOURCE_KEYBOARD is 257
1 0000 0001
However, rather confusingly, for many keyboards the source sent by android is 769
11 0000 0001
Thus the keyboard is passing the check as being a DPAD and being processed as a joystick rather than keyboard. This PR handles the specific case of 769, allowing input from physical keyboards.