update method

@override void update()

Implementation

@override
void update() {
  position = Offset(
    position.dx + cos(direction) * speedX,
    position.dy + sin(direction) * speedY,
  );
  rotation += rotationSpeed;

  // Reset if particle goes out of bounds
  if (position.dx < 0 ||
      position.dx > screenSize.width ||
      position.dy > screenSize.height) {
    reset();
  }
}