Method removeAreaAquifer

library/modules/Maps.cpp:1487–1524

}

int Maps::removeAreaAquifer(df::coord pos1, df::coord pos2, std::function<bool(df::coord, df::map_block *)> filter) {
    int totalAffectedCount = 0;
    cuboid bounds(pos1, pos2);

    // Loop through the affected blocks
    bounds.forBlock([&](df::map_block *block, cuboid intersect) {
        int blockAffectedCount = 0;
        int aquiferCount = 0;
        cuboid block_bounds(block);

        // Loop through all tiles in the block
        block_bounds.forCoord([&](df::coord pos) {
            auto &des = block->designation[pos.x&15][pos.y&15];
            if (des.bits.water_table) {
                if (intersect.containsPos(pos) && filter(pos, block)) {
                    blockAffectedCount++;
                    des.bits.water_table = false;
                    block->occupancy[pos.x&15][pos.y&15].bits.heavy_aquifer = false;
                }
                else
                    aquiferCount++;
            }

            return true; // Keep iterating tiles
        });

        // If none of the block's tiles are now aquifers, update the block
        if (aquiferCount == 0) {
            block->flags.bits.has_aquifer = false;
            block->flags.bits.check_aquifer = false;
        }
        totalAffectedCount += blockAffectedCount;

        return true; // Keep iterating blocks
    });

    return totalAffectedCount;
}