NAME

SDL_SetJoystickVirtualBall - Generate ball motion on an opened virtual joystick.

SYNOPSIS

#include <SDL3/SDL_joystick.h>

bool SDL_SetJoystickVirtualBall(SDL_Joystick *joystick, int ball, Sint16 xrel, Sint16 yrel);

DESCRIPTION

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.

FUNCTION PARAMETERS

joystick

the virtual joystick on which to set state.

ball

the index of the ball on the virtual joystick to update.

xrel

the relative motion on the X axis.

yrel

the relative motion on the Y axis.

RETURN VALUE

Returns true on success or false on failure; call SDL_GetError() for more information.

THREAD SAFETY

It is safe to call this function from any thread.

AVAILABILITY

This function is available since SDL 3.2.0.

SEE ALSO

SDL_SetJoystickVirtualAxis(3), SDL_SetJoystickVirtualButton(3), SDL_SetJoystickVirtualHat(3), SDL_SetJoystickVirtualTouchpad(3), SDL_SetJoystickVirtualSensorData(3)