Function can_dig_down_stair

plugins/dig-now.cpp:268–281

}

static bool can_dig_down_stair(df::tiletype tt) {
    df::tiletype_shape shape = tileShape(tt);
    return shape == df::tiletype_shape::BOULDER ||
        shape == df::tiletype_shape::BROOK_BED ||
        shape == df::tiletype_shape::BROOK_TOP ||
        shape == df::tiletype_shape::FLOOR ||
        shape == df::tiletype_shape::FORTIFICATION ||
        shape == df::tiletype_shape::PEBBLES ||
        shape == df::tiletype_shape::RAMP ||
        shape == df::tiletype_shape::SAPLING ||
        shape == df::tiletype_shape::SHRUB ||
        shape == df::tiletype_shape::TWIG ||
        shape == df::tiletype_shape::WALL;
}

static bool can_dig_up_down_stair(df::tiletype tt) {
    df::tiletype_shape shape = tileShape(tt);