# 获取按键状态

    keys = pygame.key.get_pressed()

    if keys[pygame.K_LEFT]:

        print("按了左方向键")

        if marioX - marioWalkStep <= 0:

            marioWalkStep = marioX

        if (marioX - marioWalkStep <= pipeX + pipeWidth and pipeX + pipeWidth <= marioX

                and marioY + marioHeight >= pipeY and marioY <= pipeY + pipeHeight):

            marioWalkStep = marioX - (pipeX + pipeWidth)

        marioX = marioX - marioWalkStep

    if keys[pygame.K_RIGHT]:

        print("按了右方向键")

        if marioX + marioWidth + marioWalkStep >= WIDTH:

            marioWalkStep = WIDTH - (marioX + marioWidth)

            print("marioWalkStep1=" + str(marioWalkStep))

        if (marioX + marioWidth + marioWalkStep >= pipeX and marioX + marioWidth <= pipeX

                and marioY + marioHeight >= pipeY and marioY <= pipeY + pipeHeight):

            marioWalkStep = pipeX - (marioX + marioWidth)

            print("marioWalkStep2=" + str(marioWalkStep))

        marioX = marioX + marioWalkStep