Function FootpathReconnectQueueToPath

src/openrct2/world/Footpath.cpp:402–443

* Attempt to connect a newly disconnected queue tile to the specified path tile */

     * Attempt to connect a newly disconnected queue tile to the specified path tile
     */
    static bool FootpathReconnectQueueToPath(
        const CoordsXY& footpathPos, TileElement* tileElement, int32_t action, int32_t direction)
    {
        if (((tileElement->asPath()->GetEdges() & (1 << direction)) == 0) ^ (action < 0))
            return false;

        auto targetQueuePos = footpathPos + CoordsDirectionDelta[direction];

        if (action < 0)
        {
            if (WallInTheWay({ footpathPos, tileElement->getBaseZ(), tileElement->getClearanceZ() }, direction))
                return false;

            if (WallInTheWay(
                    { targetQueuePos, tileElement->getBaseZ(), tileElement->getClearanceZ() }, DirectionReverse(direction)))
                return false;
        }

        int32_t z = tileElement->getBaseZ();
        TileElement* targetFootpathElement = FootpathGetElement({ targetQueuePos, z - kLandHeightStep, z }, direction);
        if (targetFootpathElement != nullptr && !targetFootpathElement->asPath()->IsQueue())
        {
            auto targetQueueElement = targetFootpathElement->asPath();
            tileElement->asPath()->SetSlopeDirection(0);
            if (action > 0)
            {
                tileElement->asPath()->SetEdges(tileElement->asPath()->GetEdges() & ~(1 << direction));
                targetQueueElement->SetEdges(targetQueueElement->GetEdges() & ~(1 << (DirectionReverse(direction) & 3)));
                if (action >= 2)
                    tileElement->asPath()->SetSlopeDirection(direction);
            }
            else if (action < 0)
            {
                tileElement->asPath()->SetEdges(tileElement->asPath()->GetEdges() | (1 << direction));
                targetQueueElement->SetEdges(targetQueueElement->GetEdges() | (1 << (DirectionReverse(direction) & 3)));
            }
            if (action != 0)
                MapInvalidateTileFull(targetQueuePos);
            return true;
        }
        return false;
    }

    static bool FootpathDisconnectQueueFromPath(const CoordsXY& footpathPos, TileElement* tileElement, int32_t action)
    {