the game is gamin

main.py

@@ -1,8 +1,13 @@
 # this allows us to use code from
 # the open-source pygame library
 # throughout this file
+import sys
 import pygame
 from constants import *
+from player import *
+from asteroid import *
+from asteroidfield import *
+from shot import *
 
 def main():
     print("Starting Asteroids!")
@@ -13,13 +18,47 @@ def main():
     #set screen resolution
     screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
 
+    clock = pygame.time.Clock()
+    dt = 0
+
+    #groups 
+    updatable = pygame.sprite.Group()
+    drawable = pygame.sprite.Group()
+    asteroids = pygame.sprite.Group()
+    shots = pygame.sprite.Group()
+
+    Player.containers = (updatable, drawable)
+    Asteroid.containers = (updatable, drawable, asteroids)
+    AsteroidField.containers = (updatable)
+    Shot.containers = (updatable, drawable, shots)
+
+    player = Player(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2)
+    asteroidfield = AsteroidField()
+
     while True:
         for event in pygame.event.get():
             if event.type == pygame.QUIT:
                  return
+        
+        updatable.update(dt)
+
+        for a in asteroids:
+            if a.colission(player):
+                print("Game Over!")
+                sys.exit()
+            for s in shots:
+                if a.colission(s):
+                    a.split()
+                    s.kill()
 
         screen.fill((0,0,0))
+
+        for d in drawable:
+            d.draw(screen)
+
+
         pygame.display.flip()
+        dt = clock.tick(60) / 1000
 
 if __name__ == "__main__":
     main()