asteroid.py

import pygame
import random
from circleshape import CircleShape
from constants import ASTEROID_MIN_RADIUS


class Asteroid(CircleShape):
    def __init__(self, x, y, radius):
        super().__init__(x, y, radius)
    
    def draw(self, screen):
        pygame.draw.circle(screen,"White",self.position, self.radius, width=2)

    def update(self, dt):
        self.position += self.velocity * dt

    def split(self):
        self.kill()
        if self.radius <= ASTEROID_MIN_RADIUS:
            return
    
        angle = random.uniform(20, 50)
        vector_one = self.velocity.rotate(angle)
        vector_two = self.velocity.rotate(-angle)
        new_radius = self.radius - ASTEROID_MIN_RADIUS
        new_asteroid_one = Asteroid(self.position.x, self.position.y, new_radius)
        new_asteroid_one.velocity = vector_one * 1.2
        new_asteroid_two = Asteroid(self.position.x, self.position.y, new_radius)
        new_asteroid_two.velocity = vector_two * 1.2