fixed colision crash

circleshape.py

@@ -15,10 +15,7 @@ class CircleShape(pygame.sprite.Sprite):
 
     def is_colided(self,other_circle):
         distance = self.position.distance_to(other_circle.position)
-        if other_circle.radius + self.radius <= distance:
-            return True
-        else:
-            return False
+        return distance <= other_circle.radius + self.radius
 
     def draw(self, screen):
         # sub-classes must override

main.py

@@ -1,4 +1,5 @@
 import pygame
+import sys
 from constants import *
 from player import Player
 from asteroidfield import AsteroidField
@@ -48,9 +49,9 @@ def main():
         for updatable in updatables:
             updatable.update(dt)
         for asteroid in asteroids:
-            if asteroid.is_colided(p1):
+            if p1.is_colided(asteroid):
                 print("Game Over!")
-                return
+                sys.exit()
         
         pygame.display.flip()
         tick = clock.tick(60)