from math import sqrt, pi

class Rocket:
    # Rocket simulates a rocket ship for a game,
    # or a physics simulation.
    
    def __init__(self, x=0, y=0):  # Changed to __init__
        # Each rocket has an (x,y) position.
        self.x = x
        self.y = y
        
    def move_rocket(self, x_increment=0, y_increment=1):
        # Move the rocket according to the parameters given.
        # Default behavior is to move the rocket up one unit.
        self.x += x_increment
        self.y += y_increment
        
    def get_distance(self, other_rocket):
        # Calculates the distance from this rocket to another rocket,
        # and returns that value.
        distance = sqrt((self.x - other_rocket.x) ** 2 + (self.y - other_rocket.y) ** 2)  # Fixed exponentiation operator
        return distance
    
    def __str__(self):  # Changed to __str__
        return f"A Rocket positioned at ({self.x},{self.y})"

    def __repr__(self):  # Changed to __repr__
        return f"Rocket({self.x},{self.y})"
    
class Shuttle(Rocket):
    # Shuttle simulates a space shuttle, which is really just a reusable rocket.
    
    def __init__(self, x=0, y=0, flights_completed=0):  # Changed to __init__
        super().__init__(x, y)  # Corrected to call the superclass constructor
        self.flights_completed = flights_completed

class CircleRocket(Rocket):
    def __init__(self, x=0, y=0, radius=1):  # Changed to __init__
        super().__init__(x, y)  # Corrected to call the superclass constructor
        self.radius = radius 
    
    def get_area(self):
        return pi * self.radius ** 2

    def get_circumference(self):
        return 2 * pi * self.radius
    
    def __str__(self):  # Changed to __str__
        return f"A CircleRocket positioned at ({self.x},{self.y}) with radius {self.radius}"

    def __repr__(self):  # Changed to __repr__
        return f"CircleRocket({self.x},{self.y}, {self.radius})"
