save project

snake.py

@@ -59,8 +59,11 @@ while True:
         num2 =random.randint(1,16)
         num2 =random.randint(1,16)
         apple_x = num1*30-30
         apple_x = num1*30-30
         apple_y = num2*30-30
         apple_y = num2*30-30
+        score+=10
     else:
     else:
         position.pop(0)
         position.pop(0)
+if x<0 or x>630 or y<0 or y>450:
+    exit()
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去