save project

snake.py

@@ -64,12 +64,14 @@ while True:
         a_x = randint(0,21)*30
         a_y = randint(0,15)*30
         position.insert(0,last)
-        screen.blit(body,last)
         score += 1
+        screen.blit(body,last)
+        
     screen.blit(food,(a_x,a_y))
     for i in range(len(position)-1):
         if (x,y) == position[i]:
             exit()
-    
+    if x < 0 or x > 630 and y < 0 or y > 450:
+        exit()
     pygame.display.update()
     FPS.tick(3)
\ No newline at end of file