auto save

snake.py

@@ -54,9 +54,12 @@ while True:
     else:
         y += 30
     position.append((x, y))
-        if x==apple_x and y==apple_y:
-        apple_x = random.randint(0，660)
-        apple_y = random.randint(0，480)
+    if x==apple_x and y==apple_y:
+        apple_x = random.randint(1，22)
+        apple_y = random.randint(1，16)
+        apple_x = num1 * 30 - 30
+        apple_y = num2 *30 - 30
+    else:
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))