Function clearTargetArea

plugins/siege-engine.cpp:533–542

}

static void clearTargetArea(df::building_siegeenginest *bld)
{
    CHECK_NULL_POINTER(bld);

    if (auto engine = find_engine(bld))
        engine->target = coord_range();

    auto key = stl_sprintf("siege-engine/target/%d", bld->id);
    World::DeletePersistentData(World::GetPersistentData(key));
}

static bool setTargetArea(df::building_siegeenginest *bld, df::coord target_min, df::coord target_max)
{