Method canMelt

library/modules/Items.cpp:1989–2024

When called with game_ui = true, this is equivalent to Bay12's itemst::meltable() (i.e., returning true if and only if the item has a "designate for melting" button in game)

/// When called with game_ui = true, this is equivalent to Bay12's itemst::meltable()
/// (i.e., returning true if and only if the item has a "designate for melting" button in game)
bool Items::canMelt(df::item *item, bool game_ui) {
    CHECK_NULL_POINTER(item);
    MaterialInfo mat(item);
    if (mat.getCraftClass() != craft_material_class::Metal)
        return false;

    if (!usesStandardMaterial(item->getType()))
        return false;

    if (item->flags.bits.artifact)
        return false;
    // Ignore checks below when asked to behave like itemst::meltable()
    if (game_ui)
        return true;

    if (item->getType() == item_type::BAR)
        return false;

    // Do not melt nonempty containers and items in unit inventories
    for (auto gref : item->general_refs) {
        switch (gref->getType())
        {   using namespace df::enums::general_ref_type;
            case CONTAINS_ITEM:
            case UNIT_HOLDER:
            case CONTAINS_UNIT:
                return false;
            case CONTAINED_IN_ITEM:
                if (auto cont = gref->getItem(); getGeneralRef(cont, UNIT_HOLDER))
                    return false;
                break;
            default:
                break;
        }
    }
    return true;
}

bool Items::markForMelting(df::item *item) {
    CHECK_NULL_POINTER(item);