auto save

snake.py

@@ -56,8 +56,11 @@ while True:
         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)
+        num1 = random.randint(1, 22)
+        num2 = 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))
@@ -71,34 +74,3 @@ while True:
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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