save project

snake.py

@@ -53,6 +53,7 @@ while True:
         y += 30
     position.append((x, y))
     position.pop(0)
+    if x == apple_x and apple_y 
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -63,6 +64,7 @@ while True:
 
     # 将果实画上去
     screen.blit(food, (360, 300))
+
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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