象棋游戏编程——画棋盘

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最近一段时间开始玩象棋，虽然棋艺不精，确也乐在其中。作为象棋初学者，很多高手对我都是避而远之，在我的威逼利诱之下，才跟我对战一二。后来有位朋友推荐我玩单机版的象棋游戏，在佩服其算法精湛的同时，也出现了不少问题。比如说，和电脑对战的时候，我明明士可以退回去吃他的車，可我的士却不听使唤。类似情况还有很多，这使我萌发了自己写一款象棋游戏的想法。

主功能界面已划分完成，昨天写了一段代码画棋盘（也是象棋里面所说的九宫格）。画棋盘虽然是个不起眼的小功能，但是棋盘上论输赢，画棋盘也是非常重要的。

public void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
     {
            Graphics g=e.Graphics;
            int startLeft,startTop;
            if(this.displaySize==15)
            {
                startLeft=48;startTop=32;//标准屏幕
            }
            else
            {
                startLeft=60;startTop=35;//宽屏
            }
            int Index=0; //记录点的索引            
            width=panel1.Width;
            height=panel1.Height;
            width=width/9;  height=height/10;  //确定每个方格的宽和高
            width-=4; height-=3;            
            Pen pen1=new Pen(Color.DarkBlue,3);    
            Pen pen2=new Pen(Color.Black,2);
            int startX=startLeft,startY=startTop;
            for(int i=0;i<2;i++)
            {
                for(int j=0;j<4;j++)
                {
                    for(int k=0;k<8;k++)
                    {//以下括号内所有语句为画一行方格                        
                        g.DrawRectangle(pen1,startX,startY,width,height);                        
                        point[Index]=new Point(startX,startY);
                        Index++;
                        startX+=width;
                    }                    
                    point[Index]=new Point(point[Index-1].X+width,point[Index-1].Y);
                    Index++;
                    
                    startY+=height;  //往下移动动坐标,画下一行方格
                    startX=startLeft;
                }                
                //记录上面往下的九个点
                for(int ii=Index-9,j=0;j<9;ii++,j++)
                {                    
                    point[Index]=new Point(point[ii].X,point[ii].Y+height);
                    Index++;
                }
                int paoX,paoY;  //声明画炮点的坐标
                int x,y,temp;   //画将/帅的辅助变量
                if(i==0)
                {
                    paoX=startLeft+width;
                    paoY=startTop+2*height;                            
                    x=startLeft+3*width;
                    y=startTop+2*height;
                    temp=0;                    
                }
                else
                {
                    paoX=startLeft+width;
                    paoY=startTop+7*height+height/2;                    
                    x=startLeft+3*width;
                    y=startLeft+9*height+2;
                    temp=7*height+height/2+2;
                }                
                
                //画横向的两个炮的图案
                DrawAllSitePoint(sender,e,paoX,paoY,width);        
                paoX=startLeft+7*width;
                DrawAllSitePoint(sender,e,paoX,paoY,width);    
                
                //画将/帅的皇宫        
                float[] dashValues={3,1,3,1,3,1};
                pen2.DashPattern=dashValues;
                g.DrawLine(pen2,x,startTop+temp,x+2*width,y);
                x=startLeft+5*width;
                g.DrawLine(pen2,x,startTop+temp,x-2*width,y);

                //画中间的楚河汉界                
                Font font=new Font("华文行楷", 42F, ((System.Drawing.FontStyle)((System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic))), System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));                                
                Brush brush=new SolidBrush(Color.Purple);
                PointF tempPoint=new PointF(startLeft,startTop+4*height+10);
                string tempStr;
                if(this.displaySize==15)
                {
                    tempStr="  楚   河       汉   界     "; /************适于标准屏幕**************/
                }
                else
                {
                    tempStr="      楚    河           汉    界     ";   /************适于宽屏**************/
                    tempPoint.Y=tempPoint.Y+8;
                }
                g.DrawString(tempStr,font,brush,tempPoint);

                startX=startLeft;
                startY=startTop+5*height+height/2;    //移动坐标,画下方旗盘            
            }            
            for(int i=29;i<=33;i+=2)
                DrawAllSitePoint(sender,e,this.point[i].X,this.point[i].Y,width);
            for(int i=56;i<=60;i+=2)
                DrawAllSitePoint(sender,e,this.point[i].X,this.point[i].Y,width);
            this.DrawLeftHalfSitePoint(sender,e,this.point[27].X,this.point[27].Y,width);
            this.DrawRightHalfSitePoint(sender,e,this.point[35].X,this.point[35].Y,width);
            this.DrawLeftHalfSitePoint(sender,e,this.point[54].X,this.point[54].Y,width);
            this.DrawRightHalfSitePoint(sender,e,this.point[62].X,this.point[62].Y,width);

            pen1.Dispose();
            g.Dispose();    
            MyInitializeComponent();
    }

下面是棋盘运行效果：