save project

my_game.py

@@ -84,13 +84,14 @@ while True:
         time = 0
         time = 0
         num = random.randint(0,50)
         num = random.randint(0,50)
         if num > 20:
         if num > 20:
-            block = Block(bush,cacti,stone)
-            block_list.add(block)
+            aa=Block(bush,cacti,stone)
+            block_list.add(aa)
     for sprite in block_list:
     for sprite in block_list:
         sprite.rect.x -= 8
         sprite.rect.x -= 8
-        screen.blit(sprite.image, (sprite.rect.x, sprite.rect.y))
-        if sprite.rect.x < 0-sprite.rect.width:
+        screen.blit(sprite.image, (sprite.rect.x, sprite.rect.y)) 
+        if sprite.rect.x <= 0-sprite.rect.width:
             sprite.kill()
             sprite.kill()
+
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()
     FPS.tick(60)
     FPS.tick(60)
\ No newline at end of file