//wuziqi.java


import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import java.awt.Color;

public class wuziqi extends Applet implements ActionListener,MouseListener,MouseMotionListener,ItemListener
{
 int color_Qizi=0;//旗子的顏色標(biāo)識(shí) 0:白子 1:黑子
 int intGame_Start=0;//游戲開始標(biāo)志 0未開始 1游戲中
 int intGame_Body[][]=new int[16][16];  //設(shè)置棋盤棋子狀態(tài) 0 無子 1 白子 2 黑子

 Button b1=new Button("游戲開始");
 Button b2=new Button("重置游戲");
 Label lblWin=new Label(" ");
 Checkbox ckbHB[]=new Checkbox[2];
 CheckboxGroup ckgHB=new CheckboxGroup();
 public void init()
 {
  setLayout(null);

  addMouseListener(this);
  add(b1);
  b1.setBounds(330,50,80,30);
  b1.addActionListener(this);
  add(b2);
  b2.setBounds(330,90,80,30);
  b2.addActionListener(this);
  ckbHB[0]=new Checkbox("白子先",ckgHB,false);
  ckbHB[0].setBounds(320,20,60,30);
  ckbHB[1]=new Checkbox("黑子先",ckgHB,false);
  ckbHB[1].setBounds(380,20,60,30);
  add(ckbHB[0]);
  add(ckbHB[1]);
  ckbHB[0].addItemListener(this);
  ckbHB[1].addItemListener(this);
  add(lblWin);
  lblWin.setBounds(330,130,80,30);

  Game_start_csh();
 }

 public void itemStateChanged(ItemEvent e)
 {
  if (ckbHB[0].getState())  //選擇黑子先還是白子先
  {
   color_Qizi=0;
  }
  else
  {
   color_Qizi=1;
  }  
 }

 public void actionPerformed(ActionEvent e)
 {
  Graphics g=getGraphics();
  if (e.getSource()==b1)
  {
   Game_start();
  }
  else
  {
   Game_re();
  }
 }

 public void mousePressed(MouseEvent e){}

 public void mouseClicked(MouseEvent e)
 {
  Graphics g=getGraphics();
  int x1,y1;
  x1=e.getX();
  y1=e.getY();
  if (e.getX()<20 || e.getX()>300 || e.getY()<20 || e.getY()>300)
  {
   return;
  }
  
  if (x1%20>10)
  {
   x1+=20;
  }

  if(y1%20>10)
  {
   y1+=20;
  }

  x1=x1/20*20;
  y1=y1/20*20;
  set_Qizi(x1,y1);

 }

 public void mouseEntered(MouseEvent e){}
 public void mouseExited(MouseEvent e){}
 public void mouseReleased(MouseEvent e){}
 public void mouseDragged(MouseEvent e){}
 public void mouseMoved(MouseEvent e){}

 public void paint(Graphics g)
 {
  draw_qipan(g);
 }

 public void set_Qizi(int x,int y)  //落子
 {
  if (intGame_Start==0) //判斷游戲未開始
  {
   return;
  }

  if (intGame_Body[x/20][y/20]!=0)
  {
   return;
  }
  Graphics g=getGraphics();

  if (color_Qizi==1)//判斷黑子還是白子
  {
   g.setColor(Color.black);
   color_Qizi=0;
  }
  else
  {
   g.setColor(Color.white);
   color_Qizi=1;
  }

  g.fillOval(x-10,y-10,20,20);

  intGame_Body[x/20][y/20]=color_Qizi+1;

  
  if (Game_win_1(x/20,y/20))  //判斷輸贏
  {
   lblWin.setText(Get_qizi_color(color_Qizi)+"贏了!");
   intGame_Start=0;
  }

  if (Game_win_2(x/20,y/20))  //判斷輸贏
  {
   lblWin.setText(Get_qizi_color(color_Qizi)+"贏了!");
   intGame_Start=0;
  }

  if (Game_win_3(x/20,y/20))  //判斷輸贏
  {
   lblWin.setText(Get_qizi_color(color_Qizi)+"贏了!");
   intGame_Start=0;
  }

  if (Game_win_4(x/20,y/20))  //判斷輸贏
  {
   lblWin.setText(Get_qizi_color(color_Qizi)+"贏了!");
   intGame_Start=0;
  }
 }

 public String Get_qizi_color(int x)
 {
  if (x==0)
  {
   return "黑子";
  }
  else
  {
   return "白子";
  }
 }

 public void draw_qipan(Graphics G)  //畫棋盤 15*15
 {
  G.setColor(Color.lightGray);
  G.fill3DRect(10,10,300,300,true);
  G.setColor(Color.black);
  for(int i=1;i<16;i++)
  {
   G.drawLine(20,20*i,300,20*i);
   G.drawLine(20*i,20,20*i,300);
  }
 }
 
 public void Game_start() //游戲開始
 {
  intGame_Start=1;
  Game_btn_enable(false);
  b2.setEnabled(true);
 }

 public void Game_start_csh() //游戲開始初始化
 {
  intGame_Start=0;
  Game_btn_enable(true);
  b2.setEnabled(false);
  ckbHB[0].setState(true);

  for (int i=0;i<16 ;i++ )
  {
   for (int j=0;j<16 ;j++ )
   {
    intGame_Body[i][j]=0;
   }
  }
  lblWin.setText("");
 }

 public void Game_re() //游戲重新開始
 {
  repaint();
  Game_start_csh();
 }

 public void Game_btn_enable(boolean e)  //設(shè)置組件狀態(tài)
 {
  b1.setEnabled(e);
  b2.setEnabled(e);
  ckbHB[0].setEnabled(e);
  ckbHB[1].setEnabled(e);
 }

 public boolean Game_win_1(int x,int y)  //判斷輸贏 橫
 {
  int x1,y1,t=1;
  x1=x;
  y1=y;

  for (int i=1;i<5 ;i++ )
  {
   if (x1>15)
   {
    break;
   }
   if (intGame_Body[x1+i][y1]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }

  }

  for (int i=1;i<5 ;i++ )
  {
   if (x1<1)
   {
    break;
   }

   if(intGame_Body[x1-i][y1]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }  
  }

  if (t>4)
  {
   return true;
  }
  else
  {
   return false;
  }
 }

 public boolean Game_win_2(int x,int y)  //判斷輸贏 豎
 {
  int x1,y1,t=1;
  x1=x;
  y1=y;

  for (int i=1;i<5 ;i++ )
  {
   if (x1>15)
   {
    break;
   }
   if (intGame_Body[x1][y1+i]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }

  }

  for (int i=1;i<5 ;i++ )
  {
   if (x1<1)
   {
    break;
   }

   if(intGame_Body[x1][y1-i]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }  
  }

  if (t>4)
  {
   return true;
  }
  else
  {
   return false;
  }
 }

 public boolean Game_win_3(int x,int y)  //判斷輸贏 左斜
 {
  int x1,y1,t=1;
  x1=x;
  y1=y;

  for (int i=1;i<5 ;i++ )
  {
   if (x1>15)
   {
    break;
   }
   if (intGame_Body[x1+i][y1-i]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }

  }

  for (int i=1;i<5 ;i++ )
  {
   if (x1<1)
   {
    break;
   }

   if(intGame_Body[x1-i][y1+i]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }  
  }

  if (t>4)
  {
   return true;
  }
  else
  {
   return false;
  }
 }

 public boolean Game_win_4(int x,int y)  //判斷輸贏 左斜
 {
  int x1,y1,t=1;
  x1=x;
  y1=y;

  for (int i=1;i<5 ;i++ )
  {
   if (x1>15)
   {
    break;
   }
   if (intGame_Body[x1+i][y1+i]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }

  }

  for (int i=1;i<5 ;i++ )
  {
   if (x1<1)
   {
    break;
   }

   if(intGame_Body[x1-i][y1-i]==intGame_Body[x][y])
   {
    t+=1;
   }
   else
   {
    break;
   }  
  }

  if (t>4)
  {
   return true;
  }
  else
  {
   return false;
  }
 }
}