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snake.py

@@ -60,13 +60,10 @@ while True:
         num2 = random.randint(1, 16)
         apple_x = num1 * 30 - 30
         apple_y = num2 * 30 - 30
-        score += 10
     else:
         position.pop(0)
     # 将背景图画上去
-    if x < 0 or x > 630 or y < 0 or y > 450:
-        exit() 
-    screen.blit(background, (0, 0) )
+    screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
     # 将贪吃蛇的身体画上去