recCir method

Implementation

static bool recCir(Entity rectangle, Entity circle) {
  if (!CollisionChecker.rectangles(rectangle, circle)) {
    return false;
  }

  double r = (circle.width / 2);
  double x = circle.x + r;
  double y = circle.y + r;

  // This will return false when the circle is outside the corner of the rectangle

  // Upper left
  if (x < rectangle.x && y < rectangle.y) {
    if ((r < sqrt(pow(x - rectangle.x, 2) + pow(y - rectangle.y, 2)))) {
      return false;
    }
  }

  // Upper right
  if (x > rectangle.x + rectangle.width && y < rectangle.y) {
    if ((r < sqrt(pow(x - (rectangle.x + rectangle.width), 2) + pow(y - rectangle.y, 2)))) {
      return false;
    }
  }

  // Lower left
  if (x < rectangle.x && y > rectangle.y + rectangle.height) {
    if ((r < sqrt(pow(x - rectangle.x, 2) + pow(y - (rectangle.y + rectangle.height), 2)))) {
      return false;
    }
  }

  // Lower right
  if (x > rectangle.x + rectangle.width && y > rectangle.y + rectangle.height) {
    // Radius is greater than the distance to the corner
    if ((r < sqrt(pow(x - (rectangle.x + rectangle.width), 2) + pow(y - (rectangle.y + rectangle.height), 2)))) {
      return false;
    }
  }
  return true;
}