auto save

snake.py

@@ -52,7 +52,13 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
+    if x == apple_x and y == apple_y:
+        num1 = random.randint(1.22)
+        num2 = random.randint(1,16)
+        apple_x = 30*num1-30
+        apple_y = 30*num2-30
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -63,6 +69,7 @@ while True:
 
     # 将果实画上去
     screen.blit(food, (360, 300))
+    screen.blit(food,(apple_x,apple_y))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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