if (myinteract == 0)
{
    if (direction >= 225 && direction < 315)
    {
        facing = 0;
        sprite_index = dsprite;
    }
    if (direction >= 315 || direction < 45)
    {
        facing = 1;
        sprite_index = rsprite;
    }
    if (direction >= 45 && direction < 135)
    {
        facing = 2;
        sprite_index = usprite;
    }
    if (direction >= 135 && direction < 225)
    {
        facing = 3;
        sprite_index = lsprite;
    }
}
if (myinteract == (1 + argument0))
{
    if (facing == 0)
        sprite_index = dtsprite;
    if (facing == 1)
        sprite_index = rtsprite;
    if (facing == 2)
        sprite_index = utsprite;
    if (facing == 3)
        sprite_index = ltsprite;
}