save project

snake.py

@@ -62,6 +62,8 @@ while True:
         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
@@ -69,7 +71,7 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
-
+    for i in range(100):
     # 将果实画上去
         screen.blit(food, (apple_x, apple_y))
     info = "Score:"+ str(score)