save project

snake.py

@@ -59,13 +59,16 @@ while True:
         mun2=random.randint(1,16)
         apple_x=mun1
         apple_y=mun2
+        score+=10
     else:
         position.pop(0)
+    if x<0 or x>630 or y<0 or y>450:
+        exit()
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
-    info="Score"+str(score)
+    info="Score:"+str(score)
     text=my_font.render(info,True,(0,0,0))
     screen.blit(text,(540,10))
     # 将贪吃蛇的身体画上去