Function fix_tile

plugins/fix-occupancy.cpp:222–269

}

static void fix_tile(color_ostream &out, df::coord pos, bool dry_run) {
    auto occ = Maps::getTileOccupancy(pos);
    auto block = Maps::getTileBlock(pos);
    if (!occ || !block) {
        WARN(log,out).print("invalid tile: ({}, {}, {})\n", pos.x, pos.y, pos.z);
        return;
    }

    Expected expected;

    // building occupancy (scan all buildings since we can't depend on Buildings::findAtTile)
    size_t num_buildings = 0;
    for (auto bld : world->buildings.all) {
        if (Buildings::containsTile(bld, pos)) {
            ++num_buildings;
            scan_building(out, bld, expected);
        }
    }

    // unit occupancy (make sure we pick up wagons that might be overlapping the tile)
    vector<df::unit *> units;
    Units::getUnitsInBox(units, pos.x-1, pos.y-1, pos.z, pos.x+1, pos.y+1, pos.z);
    size_t num_units = units.size();
    for (auto unit : units)
        scan_unit(unit, expected);

    // check/fix order of map block item vector
    normalize_item_vector(out, block, dry_run);

    // scan for items at that position in the map block
    // this won't catch issues with items that are members of an incorrect map block. use fix_map for that.
    size_t num_items = 0;
    for (auto item_id : block->items) {
        if (auto item = df::item::find(item_id)) {
            ++num_items;
            scan_item(item, expected);
        }
    }

    // check/fix occupancy
    auto expected_occ = expected.occ(pos);
    auto expected_bld = expected.bld(pos);
    if (expected_bld && expected_occ)
        reconcile_map_tile(out, *expected_bld, *expected_occ, block->occupancy[pos.x&15][pos.y&15], dry_run, pos.x, pos.y, pos.z);

    INFO(log,out).print("verified {} building(s), {} unit(s), {} item(s), 1 map block(s), and 1 map tile(s)\n",
        num_buildings, num_units, num_items);
}

static void reconcile_block_items(color_ostream &out, std::set<int32_t> * expected_items, df::map_block * block, bool dry_run) {
    vector<int32_t> & block_items = block->items;