Method AddTileInternal

Source/Engine/Navigation/NavMeshRuntime.cpp:648–699

}

void NavMeshRuntime::AddTileInternal(NavMesh* navMesh, NavMeshTileData& tileData)
{
    // Check if that tile has been added to navmesh
    NavMeshTile* tile = nullptr;
    const auto tileRef = _navMesh->getTileRefAt(tileData.PosX, tileData.PosY, tileData.Layer);
    if (tileRef)
    {
        // Remove any existing tile at that location
        if (dtStatusFailed(_navMesh->removeTile(tileRef, nullptr, nullptr)))
        {
            LOG(Warning, "Failed to remove tile from navmesh {0}", Properties.Name);
        }

        // Reuse tile data container
        for (int32 i = 0; i < _tiles.Count(); i++)
        {
            auto& e = _tiles[i];
            if (e.X == tileData.PosX && e.Y == tileData.PosY && e.Layer == tileData.Layer)
            {
                tile = &e;
                break;
            }
        }
    }
    if (!tile)
    {
        // Add tile
        tile = &_tiles.AddOne();
    }

    // Copy tile properties
    tile->NavMesh = navMesh;
    tile->X = tileData.PosX;
    tile->Y = tileData.PosY;
    tile->Layer = tileData.Layer;
#if USE_DATA_LINK
	tile->Data.Link(tileData.Data);
#else
    tile->Data.Copy(tileData.Data);
#endif

    // Add tile to navmesh
    GET_NAV_TILE_DATA(*tile);
    const auto result = _navMesh->addTile(data, dataSize, flags, 0, nullptr);
    if (dtStatusFailed(result))
    {
        LOG(Warning, "Could not add tile ({2}x{3}, layer {4}) to navmesh {0} (error: {1})", Properties.Name, result & ~DT_FAILURE, tileData.PosX, tileData.PosY, tileData.Layer);
#if USE_NAV_MESH_ALLOC
        dtFree(data);
#endif
    }
}