原来的代码全部删除，进行了深层次重构，得其意而忘其言。得意之处有二：
1.关于显示
以 StoneSize 属性为依托，在 set 中加了一句：Width = Height = m_StoneSize * 19；以此来控制棋盘大小。所有的对象在 Init（） 方法中创建，而具体的渲染在 Redraw（） 方法中完成。这种创建与重绘相分开的办法，使调整大小时进行重绘更简单易行。这两个方法的代码如下：
1 void Init() 2 { 3 // 线 4 for (int i = 0; i < 19; i++) { 5 m_LinesH[i] = new Line(); 6 m_LinesH[i].Stroke = Brushes.Black; 7 m_Canvas.Children.Add(m_LinesH[i]); 8 9 m_LinesV[i] = new Line();10 m_LinesV[i].Stroke = Brushes.Black;11 m_Canvas.Children.Add(m_LinesV[i]);12 }13 14 // 星15 for (int j = 0; j < 3; j++) {16 for (int i = 0; i < 3; i++) {17 m_Stars[i, j] = new Ellipse();18 m_Stars[i, j].Fill = Brushes.Black;19 m_Canvas.Children.Add(m_Stars[i, j]);20 }21 }22 23 for (int i = 0; i < 19; i++) {24 for (int j = 0; j < 19; j++) {25 m_Stones[i, j] = new Ellipse();26 m_Stones[i, j].Visibility = Visibility.Hidden;27 m_Canvas.Children.Add(m_Stones[i, j]);28 29 m_Numbers[i, j] = new TextBlock();30 m_Numbers[i, j].Background = Brushes.Transparent;31 m_Numbers[i, j].Visibility = Visibility.Hidden;32 m_Canvas.Children.Add(m_Numbers[i, j]);33 34 m_Steps[i, j] = new Step();35 m_Steps[i, j].Row = i;36 m_Steps[i, j].Col = j;37 m_EmptySteps.Add(m_Steps[i, j]);38 m_AllSteps.Add(m_Steps[i, j]);39 }40 }41 42 // 当前标志43 m_CurrentRect.Visibility = System.Windows.Visibility.Hidden;44 m_CurrentRect.Fill = Brushes.Red;45 m_Canvas.Children.Add(m_CurrentRect);46 47 for (int i = 0; i < 19; i++) {48 for (int j = 0; j < 19; j++) {49 Rectangle rect = new Rectangle();50 rect.Visibility = System.Windows.Visibility.Hidden;51 m_EmptyRects[i, j] = rect;52 m_Canvas.Children.Add(m_EmptyRects[i,j]);53 54 }55 }56 }
1 public void Redraw() 2 { 3 // 画线 4 for (int i = 0; i < 19; i++) { 5 Line l = m_LinesH[i]; 6 int y = i * StoneSize + StoneSize / 2; 7 l.X1 = StoneSize / 2; 8 l.Y1 = y; 9 l.X2 = 19 * StoneSize - StoneSize / 2; 10 l.Y2 = y; 11 12 l = m_LinesV[i]; 13 int x = i * StoneSize + StoneSize / 2; 14 l.X1 = x; 15 l.Y1 = StoneSize / 2; 16 l.X2 = x; 17 l.Y2 = 19 * StoneSize - StoneSize / 2; 18 } 19 20 // 画星 21 for (int j = 0; j < 3; j++) { 22 for (int i = 0; i < 3; i++) { 23 Ellipse e = m_Stars[i, j]; 24 e.Width = e.Height = StoneSize / 3; 25 double left = 4 * StoneSize + j * 6 * StoneSize - StoneSize / 2 - e.Width / 2; 26 double top = 4 * StoneSize + i * 6 * StoneSize - StoneSize / 2 - e.Height / 2; 27 Canvas.SetLeft(e, left); 28 Canvas.SetTop(e, top); 29 } 30 } 31 32 // Stones and Numbers 33 for (int i = 0; i < 19; i++) { 34 for (int j = 0; j < 19; j++) { 35 var stone = m_Stones[i, j]; 36 stone.Width = stone.Height = StoneSize; 37 Canvas.SetLeft(stone, j * StoneSize); 38 Canvas.SetTop(stone, i * StoneSize); 39 40 ShowNumber(i, j, m_Steps[i, j].StepCount); 41 } 42 } 43 44 // 点目标志 45 if (IsShowMesh) 46 for (int i = 0; i < 19; i++) { 47 for (int j = 0; j < 19; j++) { 48 var rect = m_EmptyRects[i, j]; 49 rect.Width = rect.Height = m_CurrentRect.Width; 50 double offset = (StoneSize - rect.Width) / 2.0; 51 Canvas.SetLeft(rect, j * StoneSize + offset); 52 Canvas.SetTop(rect, i * StoneSize + offset); 53 } 54 } 55 } 56 57 public bool NextOne(int row, int col) 58 { 59 if (m_Steps[row, col].StoneColor != StoneColor.Empty) 60 return false; 61 if (m_BanOnce.Row == row && m_BanOnce.Col == col) { 62 return false; 63 } 64 m_BanOnce.Row = m_BanOnce.Col = -1; 65 66 DrawStep(row, col); 67 bool isBlack; 68 if (m_Steps[row, col].StoneColor == StoneColor.Black) { 69 m_BlackSteps.Add(m_Steps[row, col]); 70 isBlack = true; 71 } else { 72 m_WhiteSteps.Add(m_Steps[row, col]); 73 isBlack = false; 74 } 75 m_EmptySteps.Remove(m_Steps[row, col]); 76 77 UpdateBlackBlocks(); 78 UpdateWhiteBlocks(); 79 if (isBlack) { 80 if (!UpdateDeadBlocks(m_WhiteBlocks)) 81 UpdateDeadBlocks(m_BlackBlocks); 82 } else { 83 if (!UpdateDeadBlocks(m_BlackBlocks)) 84 UpdateDeadBlocks(m_WhiteBlocks); 85 } 86 87 MoveCurrentRect(); 88 89 m_StepCount++; 90 91 StoneColor selfColor = isBlack ? StoneColor.Black : StoneColor.White; 92 bool isKillSelf = m_DeadBlocks.ContainsKey(m_StepCount - 1) 93 && m_DeadBlocks[m_StepCount - 1].Steps.Count == 1 94 && m_DeadBlocks[m_StepCount - 1].Steps[0].StoneColor == selfColor; 95 if (isKillSelf) { 96 m_DeadBlocks.Remove(m_StepCount - 1); 97 BackOne(); 98 return false; 99 }100 101 return true;102 }
2.关于提子
以 LinkSteps（）方法为依托，提子不再是上下左右一通乱吃了，而是采用集合的办法，只需看看一块棋有没有气即可。其代码如下：
1 // + 2 // + + + 与 step 相连的棋子，包含自身 3 // + 根据 color 参数决定是所有，同色，黑色，白色，还是空色。 4 List<Step> LinkSteps(Step step, StoneColor color = StoneColor.Empty) 5 { 6 List<Step> links = new List<Step>(); 7 for (int i = -1; i < 2; i++) { 8 for (int j = -1; j < 2; j++) { 9 if (i == j || i == -j) {10 continue;11 }12 if (InRange(step.Row + i, step.Col + j)) {13 links.Add(m_Steps[step.Row + i, step.Col + j]);14 }15 }16 }17 links.Add(step);18 if (color == StoneColor.All) {19 return links;20 } else {21 links.RemoveAll(l => l.StoneColor != color);22 return links;23 }24 }
当然，关于劫争，关于悔棋，非深入代码，不能明白。但 LinkSteps（）是构成集合的基础。从集合的观点，研究围棋，相信比其他方法更为可行。