function scr_fusuma_mask()
{
    if (other.y == y && far_background == other.far_background)
    {
        mask = other;
        other.fusuma[other.count] = id;
        other.count++;
        if (other.depth > depth && !far_background)
            other.depth = depth - 1;
        if (object_index == obj_plat_fusumawall)
            other.mask_height = max(other.mask_height, image_yscale * 20);
    }
    else
    {
        var _found = false;
        with (obj_fusuma_mask)
        {
            if (other.y == y && far_background == other.far_background)
            {
                other.mask = self;
                fusuma[count] = other;
                count++;
                if (depth > other.depth && !far_background)
                    depth = other.depth - 1;
                _found = true;
                if (other.object_index == obj_plat_fusumawall)
                    mask_height = max(mask_height, other.image_yscale * 20);
                break;
            }
        }
        if (!_found)
        {
            var _mask = instance_create(0, y, obj_fusuma_mask);
            mask = _mask;
            if (far_background)
                _mask.depth = 15775099;
            else
                _mask.depth = depth - 1;
            _mask.fusuma[0] = id;
            _mask.far_background = far_background;
            _mask.count++;
            _mask.image_yscale = 2;
            _mask.image_xscale = 2;
            _mask.mask_height = _mask.sprite_height;
            _mask.first = false;
            _found = true;
            if (object_index == obj_plat_fusumawall)
                _mask.mask_height = max(_mask.mask_height, image_yscale * 20);
        }
    }
}