package pac;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.TitledBorder;
public class MedleyGame extends JFrame{

 private JPanel centerPanel;// 拼圖按鈕面板
 private JButton emptyButton;// 空白按鈕對(duì)象
 public static void main(String[] args) {
  try {
   MedleyGame frame = new MedleyGame();//創(chuàng)建本類的對(duì)象
   frame.setVisible(true);//設(shè)置窗體為可見
  }catch(Exception e) {
   e.printStackTrace();
  }
 }
 public MedleyGame() {
  super();// 繼承JFrame類的構(gòu)造方法
  setResizable(false);// 設(shè)置窗體大小不可改變
  setTitle("拼圖游戲");// 設(shè)置窗體的標(biāo)題
  setBounds(100, 100, 354, 435);// 設(shè)置窗體的顯示位置及大小
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 設(shè)置關(guān)閉窗體時(shí)退出程序
  final JPanel topPanel = new JPanel();// 創(chuàng)建面板對(duì)象
  topPanel.setBorder(new TitledBorder(null, "", TitledBorder.DEFAULT_JUSTIFICATION,
    TitledBorder.DEFAULT_POSITION, null, null));// 為面板添加邊框
  topPanel.setLayout(new BorderLayout());// 設(shè)置面板采用邊界布局
  getContentPane().add(topPanel,BorderLayout.NORTH);// 將面板添加到窗體頂部
  final JLabel modelLabel = new JLabel();// 創(chuàng)建顯示參考圖片的標(biāo)簽對(duì)象
  modelLabel.setIcon(new ImageIcon("img/model.jpg"));// 設(shè)置標(biāo)簽顯示的參考圖片
  topPanel.add(modelLabel, BorderLayout.WEST);// 將標(biāo)簽添加到面板的左側(cè)
  final JButton startButton = new JButton();// 創(chuàng)建“下一局”按鈕對(duì)象
  startButton.setText("下一局");// 設(shè)置按鈕的標(biāo)簽文本
  startButton.addActionListener(new StartButtonAction());// 為按鈕添加監(jiān)聽器
  topPanel.add(startButton, BorderLayout.CENTER);// 將按鈕添加到面板的中間
  
  centerPanel = new JPanel();// 創(chuàng)建拼圖按鈕面板對(duì)象
  centerPanel.setBorder(new TitledBorder(null, "",
    TitledBorder.DEFAULT_JUSTIFICATION,
    TitledBorder.DEFAULT_POSITION, null, null));// 為面板添加邊框
  centerPanel.setLayout(new GridLayout(0, 3));// 設(shè)置拼圖按鈕面板采用3列的網(wǎng)格布局
  getContentPane().add(centerPanel, BorderLayout.CENTER);// 將面板添加到窗體的中間
  
  String[][] stochasticOrder = reorder();// 獲得網(wǎng)格圖片的隨機(jī)擺放順序
  for (int row = 0; row < 3; row++) {// 遍例行
   for (int col = 0; col < 3; col++) {// 遍例列
    final JButton button = new JButton();// 創(chuàng)建拼圖按鈕對(duì)象
    button.setName(row + "" + col);// 設(shè)置按鈕的名稱
    button.setIcon(new ImageIcon(stochasticOrder[row][col])); // 為拼圖按鈕設(shè)置圖片
    if (stochasticOrder[row][col].equals("img/22.jpg")) // 判斷是否為空白按鈕
     emptyButton = button;
    button.addActionListener(new ImgButtonAction()); // 為拼圖按鈕添加監(jiān)聽器
    centerPanel.add(button);// 將按鈕添加到拼圖按鈕面板中
   }
  }
  //
 }
 private String[][] reorder(){// 用來獲取網(wǎng)格圖片的隨機(jī)擺放順序
  String[][] exactnessOrder = new String[3][3];// 網(wǎng)格圖片的正確擺放順序
  for (int row = 0; row < 3; row++) {// 遍例行
   for (int col = 0; col < 3; col++) {// 遍例列
    exactnessOrder[row][col] = "img/" + row + col + ".jpg";
   }
 }
  String[][] stochasticOrder = new String[3][3];// 網(wǎng)格圖片的隨機(jī)擺放順序
  for (int row = 0; row < 3; row++) {// 遍例行
   for (int col = 0; col < 3; col++) {// 遍例列
    while (stochasticOrder[row][col] == null) { // 隨機(jī)擺放順序的指定網(wǎng)格為空
     int r = (int) (Math.random() * 3);// 取隨機(jī)行
     int c = (int) (Math.random() * 3);// 取隨機(jī)列
     if (exactnessOrder[r][c] != null) { // 正確擺放順序的指定網(wǎng)格不為空
      // 將位于正確擺放順序的指定網(wǎng)格的圖片擺放到位于隨機(jī)擺放順序的指定網(wǎng)格中
      stochasticOrder[row][col] = exactnessOrder[r][c];
      // 將位于正確順序的指定網(wǎng)格設(shè)置為空
      exactnessOrder[r][c] = null;
     }
    }
   }
  }
  return stochasticOrder;
 }
 
 class ImgButtonAction implements ActionListener {// 拼圖按鈕監(jiān)聽器
  public void actionPerformed(ActionEvent e) {
   String emptyName = emptyButton.getName();// 獲得空白按鈕的名稱
   char emptyRow = emptyName.charAt(0);// 獲得空白按鈕所在的行
   char emptyCol = emptyName.charAt(1);// 獲得空白按鈕所在的列
   JButton clickButton = (JButton) e.getSource();// 獲得被點(diǎn)擊按鈕對(duì)象
   String clickName = clickButton.getName();// 獲得被點(diǎn)擊按鈕的名稱
   char clickRow = clickName.charAt(0);// 獲得被點(diǎn)擊按鈕所在的行
   char clickCol = clickName.charAt(1);// 獲得被點(diǎn)擊按鈕所在的列
   // 判斷被點(diǎn)擊按鈕與空白按鈕是否相臨
   if (Math.abs(clickRow - emptyRow) + Math.abs(clickCol - emptyCol) == 1) {
    // 將被點(diǎn)擊按鈕的圖片移動(dòng)到空白按鈕上
    emptyButton.setIcon(clickButton.getIcon());
    // 設(shè)置被點(diǎn)擊的按鈕顯示空白圖片
    clickButton.setIcon(new ImageIcon("img/22.jpg"));
    emptyButton = clickButton;// 將被點(diǎn)擊的按鈕設(shè)置為空白按鈕
   }
  }
 }
 class StartButtonAction implements ActionListener {// 下一局按鈕監(jiān)聽器
  public void actionPerformed(ActionEvent e) {
   String[][] stochasticOrder = reorder();// 獲得網(wǎng)格圖片的隨機(jī)擺放順序
   int i = 0;// 拼圖按鈕在拼圖按鈕面板中的索引
   for (int row = 0; row < 3; row++) {// 遍例行
    for (int col = 0; col < 3; col++) {// 遍例列
     JButton button = (JButton) centerPanel.getComponent(i++); // 獲得位于指定索引的拼圖按鈕
     button.setIcon(new ImageIcon(stochasticOrder[row][col])); // 為拼圖按鈕設(shè)置圖片
     if (stochasticOrder[row][col].equals("img/22.jpg")) // 判斷是否為空白按鈕
      emptyButton = button;
    }
   }
  }
 }
}