Function insertElementRoad

src/OpenLoco/src/Map/TileManager.cpp:313–356

0x0046166C

    // 0x0046166C
    RoadElement* insertElementRoad(const Pos2& pos, uint8_t baseZ, uint8_t occupiedQuads)
    {
        checkFreeElementsAndReorganise();

        auto [source, dest] = insertElementPrepareDest(toTileSpace(pos));
        if (source == nullptr)
        {
            return nullptr;
        }

        bool lastFound = false;
        auto isRoadStation = [](const TileElement* source, SmallZ baseZ) {
            if (baseZ != source->baseZ())
            {
                return false;
            }
            auto* srcStation = source->as<StationElement>();
            if (srcStation == nullptr)
            {
                return false;
            }
            return srcStation->stationType() == StationType::roadStation;
        };

        // Copy all of the elements that are underneath the new tile (or till end)
        while (baseZ >= source->baseZ() && !isRoadStation(source, baseZ))
        {
            *dest = *source;
            source->setBaseZ(0xFFU);
            source++;
            if (dest->isLast())
            {
                // The new element will become the last
                // so we are clearing the flag
                dest->setLastFlag(false);
                dest++;
                lastFound = true;
                break;
            }
            dest++;
        }

        return insertElementEnd(ElementType::road, baseZ, occupiedQuads, source, dest, lastFound)->as<RoadElement>();
    }

    // 0x00461578
    TileElement* insertElementAfterNoReorg(TileElement* after, ElementType type, const Pos2& pos, uint8_t baseZ, uint8_t occupiedQuads)