public void ChangeMoveMode()                     //切换行走或奔跑模式
    {
        float midSpeed = (runSpeed + walkSpeed) / 2; //平均速度

        if (moveSpeed < midSpeed)
        {
            moveSpeed = runSpeed;
        }
        else
        {
            moveSpeed = walkSpeed;
        }
        ChangeMoveButton.Switch();//切换技能图标
    }