import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class wuziqi extends JFrame implements MouseListener,WindowListener,ActionListener
{
	static final int width=19,height=19,p=1020;
	int board[][]=new int[19][19];
	boolean ptable[][][]=new boolean[width][height][p],ctable[][][]=new boolean[width][height][p];
	int cgrades[][]=new int[width][height],pgrades[][]=new int[width][height],cgrade,pgrade;
	int win[][]=new int[2][p];
	int pcount,ccount;
	boolean player,computer,start,over,pwin,cwin,tie;
	int i,j,k,m,n,count;
	int mat,nat,mde,nde;
	String str;
	
	private Dialog dialog;
	private Label dlable;
	private Label tishi;
	static final int fwidth=600,fheight=660;
	int fstart,fend;
	Button button=new Button("重新開局");
	
	public wuziqi()
	{
		super("五子棋");
		pcount=0;
		ccount=0;
		computer=false;
		start=true;
		player=false;
		over=false;
		pwin=false;
		cwin=false;
		tie=false;
		for(i=0;i<width;i++)
		{
			for(j=0;j<height;j++)
			{
				board[i][j]=2;
			}
		}
		count=0;
		for(i=0;i<19;i++)
		{
			for(j=0;j<15;j++)
			{
				for(k=0;k<5;k++)
				{
					ptable[j+k][i][count]=true;
					ctable[j+k][i][count]=true;
				}
				count++;
			}
		}
		for(i=0;i<19;i++)
		{
			for(j=0;j<15;j++)
			{
				for(k=0;k<5;k++)
				{
					ptable[i][j+k][count]=true;
					ctable[i][j+k][count]=true;
				}
				count++;
			}
		}
		for(i=0;i<15;i++)
		{
			for(j=0;j<15;j++)
			{
				for(k=0;k<5;k++)
				{
					ptable[j+k][i+k][count]=true;
					ctable[j+k][i+k][count]=true;
				}
				count++;
			}
		}
		for(i=0;i<15;i++)
		{
			for(j=18;j>=4;j--)
			{
				for(k=0;k<5;k++)
				{
					ptable[j-k][i+k][count]=true;
					ctable[j-k][i+k][count]=true;
				}
				count++;
			}
		}
		if((int)(Math.random()*100)%2==1)
		{
			computer=true;
		}
		else
		{
			player=true;
		}
		count=0;
		for(i=0;i<2;i++)
		{
			for(j=0;j<1020;j++)
			{
				win[i][j]=0;
			}
		}
		
		
		this.setSize(600,660);
		this.setLocation(100,100);
		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
		this.setLayout(new FlowLayout());
		this.setResizable(false);
		this.addMouseListener(this);
		
		dialog=new Dialog(this,"提示",true);
		dialog.setSize(240,80);
		dialog.setLocation(300,50);
		dlable=new Label("",Label.CENTER);
		dialog.add(dlable);
		dialog.addWindowListener(this);
		
		tishi=new Label("",Label.CENTER);
		this.add(tishi);
		tishi.setSize(60,35);
		tishi.setLocation(0,0);
		this.add(button);
		button.setLocation(0,0);
		button.addActionListener(this);
		this.setVisible(true);
	}
	
	public void comturn()
	{
		cgrade=-1;
		pgrade=-1;
		for(i=0;i<width;i++)
		{
			for(j=0;j<height;j++)
			{
				pgrades[i][j]=0;
				if(board[i][j]==2)
				{
					for(k=0;k<p;k++)
					{
						if(ptable[i][j][k])
						{
							switch(win[0][k])
							{
								case 1:
									pgrades[i][j]+=5;
									break;
								case 2:
									pgrades[i][j]+=500;
									break;
								case 3:
									pgrades[i][j]+=5000;
									break;
								case 4:
									pgrades[i][j]+=50000;
									break;
							}
						}
					}
				}
			}
		}
		for(i=0;i<width;i++)
		{
			for(j=0;j<height;j++)
			{
				cgrades[i][j]=0;
				if(board[i][j]==2)
				{
					for(k=0;k<p;k++)
					{
						if(ctable[i][j][k])
						{
							switch(win[1][k])
							{
								case 1:
									cgrades[i][j]+=5;
									break;
								case 2:
									cgrades[i][j]+=500;
									break;
								case 3:
									cgrades[i][j]+=5000;
									break;
								case 4:
									cgrades[i][j]+=50000;
									break;
							}
						}
					}
				}
			}
		}
		if(start)
		{
			if(board[9][9]==2)
			{
				m=9;
				n=9;
			}
			else
			{
				m=8;
				n=10;
			}
			start=false;
		}
		else
		{
			
			for(i=0;i<width;i++)
			{
				for(j=0;j<height;j++)
				{
					if(board[i][j]==2)
					{
						if(cgrades[i][j]>=cgrade)
						{
							cgrade=cgrades[i][j];
							mat=i;
							nat=j;
						}
						if(pgrades[i][j]>pgrade)
						{
							pgrade=pgrades[i][j];
							mde=i;
							nde=j;
						}
					}
				}
			}
			if(cgrade>pgrade)
			{
				m=mat;
				n=nat;
			}
			else
			{
				m=mde;
				n=nde;
			}
		}
		cgrade=0;
		pgrade=0;
		board[m][n]=1;
		ccount++;
		if(ccount+pcount==361)
		{
			tie=true;
			over=true;
		}
		for(i=0;i<p;i++)
		{
			if(ctable[m][n][i] && win[1][i]!=7)
			{
				win[1][i]++;
			}
			if(ptable[m][n][i])
			{
				ptable[m][n][i]=false;
				win[0][i]=7;
			}
		}
		player=true;
		computer=false;
	}
	
	public void paint(Graphics g)
	{
		super.paint(g);
		g.setColor(new Color(150,100,0));
		g.fillRect(0,0,fwidth,fheight);
		g.setColor(Color.black);
		fstart=30;
		fend=600-30;
		int i,j;
		for(i=fstart;i<=fend;i+=30)
		{
			g.drawLine(fstart,i+30,fend,i+30);
		}
		fstart=30;
		fend=600-30;
		for(i=fstart;i<=fend;i+=30)
		{
			g.drawLine(i,fstart+30,i,fend+30);
		}
		if(!over)
		{
			if(computer)
			{
				tishi.setText("電腦下子");
				comturn();
			}
			for(i=0;i<=1;i++)
			{
				for(j=0;j<p;j++)
				{
					if(win[i][j]==5)
					{
						if(i==0)
						{
							pwin=true;
							over=true;
							break;
						}
						else
						{
							cwin=true;
							over=true;
							break;
						}	
					}
					
				}
				if(over)
				{
					break;
				}
			}
			tishi.setText("該你下了");
		}
		for(i=0;i<width;i++)
		{
			for(j=0;j<height;j++)
			{
				if(board[i][j]==0)
				{
					g.setColor(Color.white);
					g.fillOval(i*30+23,j*30+53,14,14);
				}
				else
				{
					if(board[i][j]==1)
					{
						g.setColor(Color.black);
						g.fillOval(i*30+23,j*30+53,14,14);
					}
					
				}
			}
		}
		if(pwin)
		{
			over=true;
			dlable.setText("白子勝利");
			dialog.setVisible(true);
		}
			
		if(cwin)
		{
			over=true;
			dlable.setText("黑子勝利");
			dialog.setVisible(true);
		}
			
		if(tie)
		{
			over=true;
			dlable.setText("和局");
			dialog.setVisible(true);
		}
		
	}
	public void mouseClicked(MouseEvent e)
	{
		int m=(e.getX()-15)/30,n=(e.getY()-45)/30;
		if(!over)
			if(player)
			{
				if(board[m][n]==2)
				{
					board[m][n]=0;
					
					pcount++;
					if(ccount+pcount==361)
					{
						tie=true;
						over=true;
					}
					for(i=0;i<p;i++)
					{
						if(ptable[m][n][i] && win[0][i]!=7)
						{
							win[0][i]++;
							if(ctable[m][n][i])
							{
								ctable[m][n][i]=false;
								win[1][i]=7;
							}
						}
					}
					player=false;
					computer=true;
				}
				repaint();
			}
	}
	public void mouseEntered(MouseEvent e)
	{
	}
	public void mousePressed(MouseEvent e)
	{
	}
	public void mouseReleased(MouseEvent e)
	{
	}
	public void mouseExited(MouseEvent e)
	{
	}
	
	public void windowClosing(WindowEvent e)
	{
		if(e.getSource()==dialog)
		{
			dialog.setVisible(false);
		}
		else
		{
			System.exit(0);
		}
	}
	public void windowOpened(WindowEvent e)
	{
	}
	public void windowActivated(WindowEvent e)
	{
		repaint();
	}
	public void windowDeactivated(WindowEvent e)
	{
	}
	public void windowClosed(WindowEvent e)
	{
		repaint();
	}
	public void windowIconified(WindowEvent e)
	{
	}
	public void windowDeiconified(WindowEvent e)
	{
	}
	public void actionPerformed(ActionEvent e)
	{
		reset();
	}
	public void reset()
	{
		pcount=0;
		ccount=0;
		computer=false;
		start=true;
		player=false;
		over=false;
		pwin=false;
		cwin=false;
		tie=false;
		for(i=0;i<width;i++)
		{
			for(j=0;j<height;j++)
			{
				board[i][j]=2;
			}
		}
		count=0;
		for(i=0;i<19;i++)
		{
			for(j=0;j<15;j++)
			{
				for(k=0;k<5;k++)
				{
					ptable[j+k][i][count]=true;
					ctable[j+k][i][count]=true;
				}
				count++;
			}
		}
		for(i=0;i<19;i++)
		{
			for(j=0;j<15;j++)
			{
				for(k=0;k<5;k++)
				{
					ptable[i][j+k][count]=true;
					ctable[i][j+k][count]=true;
				}
				count++;
			}
		}
		for(i=0;i<15;i++)
		{
			for(j=0;j<15;j++)
			{
				for(k=0;k<5;k++)
				{
					ptable[j+k][i+k][count]=true;
					ctable[j+k][i+k][count]=true;
				}
				count++;
			}
		}
		for(i=0;i<15;i++)
		{
			for(j=18;j>=4;j--)
			{
				for(k=0;k<5;k++)
				{
					ptable[j-k][i+k][count]=true;
					ctable[j-k][i+k][count]=true;
				}
				count++;
			}
		}
		if((int)(Math.random()*100)%2==1)
		{
			computer=true;
		}
		else
		{
			player=true;
		}
		count=0;
		for(i=0;i<2;i++)
		{
			for(j=0;j<1020;j++)
			{
				win[i][j]=0;
			}
		}
		repaint();
	}
	public static void main(String args[])
    {
    	wuziqi wzqf=new wuziqi();
    }
}