anchor.diff:          NodeXY{ChildPath} := ChildNode.Path;
           if (Path >= NodeXY{ChildPath}) then goto nextchild_continue;
   
  -        // new Params
  +        // new parameters
           ChildNode.NodeInfo := ParentBits;
           ChildXY{ChildSortValue} := ChildNode.SortValue;
           ChildNode.Path := Path;
  
positive.code: {$endif}
  
  procedure TTileMap.UpdateCellMasks(const ChangedArea: TRect);
  const
    NOT_TOP_MASK = not (_0 or _1 or _2);
    NOT_RIGHT_MASK = not (_2 or _3 or _4);
    NOT_BOTTOM_MASK = not (_4 or _5 or _6);
    NOT_LEFT_MASK = not (_6 or _7 or _0);
    ROUND_MASKS: array[0..3] of Integer = (NOT_TOP_MASK, NOT_RIGHT_MASK, NOT_BOTTOM_MASK, NOT_LEFT_MASK);
  var
    AWidth, AHeight: Integer;
    X, Left, Top, Right, Bottom: Integer;
    Rounded: Boolean;
    CellOffsets: PCPFOffsets;
    Cell: PCPFNode;
    FlagHexagonal: Integer;
    CellLineOffset: NativeUInt;
  
    i, j: Integer;
  begin
    AWidth := Self.Width;
    AHeight := Self.Height;
  
negative.code:   FActualInfo.FinishPoint.Y := -1;
    FActualInfo.Weights.Count := 255;
  
    // internal buffers
    FActualInfo.Starts.Buffer.Initialize(Self);
    FActualInfo.Excludes.Buffer.Initialize(Self);
  