move method

void move(
  1. double dx,
  2. double dy
)

Implementation

void move(double dx, double dy) {
  _visible = true;
  _position = Offset(
    (_position.dx + dx * sensitivity).clamp(0, _screenSize.width),
    (_position.dy + dy * sensitivity).clamp(0, _screenSize.height),
  );
  notifyListeners();
}