added shooting

main.py

@@ -4,6 +4,7 @@ from constants import *
 from player import Player
 from asteroidfield import AsteroidField
 from asteroid import Asteroid
+from shot import Shot 
 
 def main():
 
@@ -22,6 +23,7 @@ def main():
     drawables = pygame.sprite.Group()
     updatables = pygame.sprite.Group()
     asteroids = pygame.sprite.Group()
+    shots = pygame.sprite.Group()
 
     # Set the containers of the astroids
     Asteroid.containers = (asteroids,drawables,updatables)
@@ -35,6 +37,7 @@ def main():
     # Set the position of the player
     p1 = Player(SCREEN_WIDTH/2,SCREEN_HEIGHT/2)
     
+    Shot.containers = (shots,drawables,updatables)
     while True:
         # if event is quit then kill the game
         for event in pygame.event.get():