save project

snake.py

@@ -63,9 +63,12 @@ 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=score+10
 
 
     else:
     else:
         position.pop(0)
         position.pop(0)
+    if x<0 or x >660 or y<0 or y >480:
+        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