public void onClick()
    {
        HandleUsrScissors usrScissors = GameObject.Find("usr_scissors").GetComponent <HandleUsrScissors>();
        HandleUsrRock     usrRock     = GameObject.Find("usr_rock").GetComponent <HandleUsrRock>();
        HandleUsrPaper    usrPaper    = GameObject.Find("usr_paper").GetComponent <HandleUsrPaper>();

        usrScissors.move_to();
        usrRock.move_to();
        usrPaper.move_to();

        transform.position = new Vector3(25f, 25f, 0f);
    }
    public void play_game(string usr_fist = "Scissors")
    {
        HandleUsrScissors   usrScissors   = GameObject.Find("usr_scissors").GetComponent <HandleUsrScissors>();
        HandleUsrRock       usrRock       = GameObject.Find("usr_rock").GetComponent <HandleUsrRock>();
        HandleUsrPaper      usrPaper      = GameObject.Find("usr_paper").GetComponent <HandleUsrPaper>();
        HandleRobotScissors robotScissors = GameObject.Find("robot_scissors").GetComponent <HandleRobotScissors>();
        HandleRobotRock     robotRock     = GameObject.Find("robot_rock").GetComponent <HandleRobotRock>();
        HandleRobotPaper    robotPaper    = GameObject.Find("robot_paper").GetComponent <HandleRobotPaper>();

        int robot_fist_code, usr_fist_code = 0;

        switch (usr_fist)
        {
        case "Scissors":
            usr_fist_code = 1;
            usr_fist_history.Add(1);
            usrRock.init();
            usrPaper.init();
            usrScissors.move_to(0f, -1.5f);
            break;

        case "Rock":
            usr_fist_code = 2;
            usr_fist_history.Add(0);
            usrPaper.init();
            usrScissors.init();
            usrRock.move_to(0f, -2f);
            break;

        case "Paper":
            usr_fist_code = 3;
            usr_fist_history.Add(2);
            usrRock.init();
            usrScissors.init();
            usrPaper.move_to(0f, -2.2f);
            break;
        }

        robot_fist_code = getRobotFistCode();
        switch (robot_fist_code)
        {
        case 1:
            robotScissors.move_to();
            robotScissors.setRigidbodyWakeUp(true);
            break;

        case  2:
        case -1:
            robotRock.move_to();
            robotRock.setRigidbodyWakeUp(true);
            break;

        case 3:
            robotPaper.move_to();
            robotPaper.setRigidbodyWakeUp(true);
            break;
        }

        // ====Fist Code====
        // code 1: Scissors
        // code 2: Rock
        // code 3: Paper
        // =================

        int tmp = usr_fist_code - robot_fist_code;

        if (tmp == 1 || tmp == -2)
        {
            usr_score++; updateScoreBoard(); Mibo.startTTS("恭喜你贏了,耶"); Mibo.motionPlay("666_SP_HorizontalBar");
        }
        else if (tmp == 0)
        {
            Mibo.startTTS("平手,看來我們不相上下呢");                // DRAW
        }
        else
        {
            robot_score++; updateScoreBoard(); Mibo.startTTS("唉呀,你輸了,加把勁"); Mibo.motionPlay("666_PE_Phubbing");
        }
    }