Method empty

plugins/tiletypes.cpp:269–275

    }

    bool empty()
    {
        return shape == -1 && material == -1 && special == -1 && variant == -1
            && dig == -1 && hidden == -1 && light == -1 && subterranean == -1
            && skyview == -1 && aquifer == -1 && autocorrect == 0
            && stone_material == -1;
    }

    inline bool matches(const df::tiletype source,
                        const df::tile_designation des,