function scr_mouse_tile_rotation_step()
{
    if (__init == 0)
    {
        x += __positionx[__currentposition];
        __movedx += __positionx[__currentposition];
        y += __positiony[__currentposition];
        __movedy += __positiony[__currentposition];
        __nextposition = __currentposition;
        __init = 1;
    }
    if (__con == 0)
    {
        if (__move != 0)
        {
            __nextposition = __currentposition + __move;
            if (__nextposition < 0)
                __nextposition = __positionmax;
            if (__nextposition > __positionmax)
                __nextposition = 0;
        }
        if (__nextposition != __currentposition)
        {
            __curmovedx = __movedx;
            __curmovedy = __movedy;
            __nextmovedx = __positionx[__nextposition];
            __nextmovedy = __positiony[__nextposition];
            __movetimer = 0;
            __con = 1;
        }
    }
    if (__con == 1)
    {
        __movetimer++;
        x += ((__nextmovedx - __movedx) / __positionframes);
        y += ((__nextmovedy - __movedy) / __positionframes);
        if (__movetimer >= __positionframes)
        {
            __movetimer = 0;
            __con = 0;
            __movedx = __positionx[__nextposition];
            __movedy = __positiony[__nextposition];
            __currentposition = __nextposition;
        }
    }
}