directionalUp method
Implementation
void directionalUp(int pointer) {
if (pointer == _pointerDragging) {
_dragging = false;
_dragPosition = _backgroundRect?.center;
_controller.onJoystickChangeDirectional(
JoystickDirectionalEvent(
directional: JoystickMoveDirectional.IDLE,
intensity: 0.0,
radAngle: 0.0,
),
);
}
}