Generate ball motion on an opened virtual joystick.
Please note that values set here will not be applied until the next call to
SDL_UpdateJoysticks, which can either be called directly, or can be called
indirectly through various other SDL APIs, including, but not limited to
the following: SDL_PollEvent, SDL_PumpEvents, SDL_WaitEventTimeout,
SDL_WaitEvent.
Generate ball motion on an opened virtual joystick.
Please note that values set here will not be applied until the next call to SDL_UpdateJoysticks, which can either be called directly, or can be called indirectly through various other SDL APIs, including, but not limited to the following: SDL_PollEvent, SDL_PumpEvents, SDL_WaitEventTimeout, SDL_WaitEvent.