class Position
{
  float x, y;
  
  Position() {}
  Position(float $x, float $y)
  {
    x = $x; y = $y;
  }
  Position(Position p)
  {
    x = p.x; y = p.y;
  }
  
  void set(float $x, float $y)
  {
    x = $x; y = $y;
  }
  void set(Position p)
  {
    x = p.x; y = p.y;
  }
  
  boolean on_screen()
  {
    return (x >= 0 && y >= 0 && x <= width && y <= height);
  }
  
  boolean btwn(Position p1, Position p2) 
  {
    return x_btwn(p1.x, p2.x) && y_btwn(p1.y, p2.y);
  }
  boolean x_btwn(float $1, float $2)
  {
    if ($1 > $2) {
      return (x < $1 && x > $2);
    } else {
      return (x > $1 && x < $2);
    }
  }
  boolean y_btwn(float $1, float $2)
  {
    if ($1 > $2) {
      return (y < $1 && y > $2);
    } else {
      return (y > $1 && y < $2);
    }
  }
}

float dist(Position $1, Position $2)
{
  return dist($1.x, $1.y, $2.x, $2.y);
}