JAVA编写的一个俄罗斯方块代码

/** * File: ErsBlocksGame.java * User: Administrator * Date: Jan 15, 2003 * Describe: 俄罗斯方块的 Java 实现 */ import javax.swing.*; import java.awt.*; import java.awt.event.*; /** * 游戏主类，继承自JFrame类，负责游戏的全局控制。 * 内含 * 1, 一个GameCanvas画布类的实例引用， * 2, 一个保存当前活动块(ErsBlock)实例的引用， * 3, 一个保存当前控制面板（ControlPanel）实例的引用; */ public class ErsBlocksGame extends JFrame { /** * 每填满一行计多少分 */ public final static int PER_LINE_SCORE = 100; /** * 积多少分以后能升级 */ public final static int PER_LEVEL_SCORE = PER_LINE_SCORE * 20; /** * 最大级数是10级 */ public final static int MAX_LEVEL = 10; /** * 默认级数是5 */ public final static int DEFAULT_LEVEL = 5; private GameCanvas canvas; private ErsBlock block; private boolean playing = false; private ControlPanel ctrlPanel; private JMenuBar bar = new JMenuBar(); private JMenu mGame = new JMenu("Game"), mControl = new JMenu("Control"), mWindowStyle = new JMenu("WindowStyle"), mInfo = new JMenu("Information"); private JMenuItem miNewGame = new JMenuItem("New Game"), miSetBlockColor = new JMenuItem("Set Block Color ..."), miSetBackColor = new JMenuItem("Set Background Color ..."), miTurnHarder = new JMenuItem("Turn up the level"), miTurnEasier = new JMenuItem("Turn down the level"), miExit = new JMenuItem("Eixt"), miPlay = new JMenuItem("Play"), miPause = new JMenuItem("Pause"), miResume = new JMenuItem("Resume"), miStop = new JMenuItem("Stop"), miAuthor = new JMenuItem("Author : [email protected]"), miSourceInfo = new JMenuItem("You can get the source code / document by email"); private JCheckBoxMenuItem miAsWindows = new JCheckBoxMenuItem("Windows"), miAsMotif = new JCheckBoxMenuItem("Motif"), miAsMetal = new JCheckBoxMenuItem("Metal", true); /** * 主游戏类的构造函数 * @param title String，窗口标题 */ public ErsBlocksGame(String title) { super(title); setSize(315, 392); Dimension scrSize = Toolkit.getDefaultToolkit().getScreenSize(); setLocation((scrSize.width - getSize().width) / 2, (scrSize.height - getSize().height) / 2); createMenu(); Container container = getContentPane(); container.setLayout(new BorderLayout(6, 0)); canvas = new GameCanvas(20, 12); ctrlPanel = new ControlPanel(this); container.add(canvas, BorderLayout.CENTER); container.add(ctrlPanel, BorderLayout.EAST); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) { stopGame(); System.exit(0); } }); addComponentListener(new ComponentAdapter() { public void componentResized(ComponentEvent ce) { canvas.fanning(); } }); show(); canvas.fanning(); } /** * 让游戏“复位” */ public void reset() { ctrlPanel.reset(); canvas.reset(); } /** * 判断游戏是否还在进行 * @return boolean, true-还在运行，false-已经停止 */ public boolean isPlaying() { return playing; } /** * 得到当前活动的块 * @return ErsBlock, 当前活动块的引用 */ public ErsBlock getCurBlock() { return block; } /** * 得到当前画布 * @return GameCanvas, 当前画布的引用 */ public GameCanvas getCanvas() { return canvas; } /** * 开始游戏 */ public void playGame() { play(); ctrlPanel.setPlayButtonEnable(false); miPlay.setEnabled(false); ctrlPanel.requestFocus(); } /** * 游戏暂停 */ public void pauseGame() { if (block != null) block.pauseMove(); ctrlPanel.setPauseButtonLabel(false); miPause.setEnabled(false); miResume.setEnabled(true); } /** * 让暂停中的游戏继续 */ public void resumeGame() { if (block != null) block.resumeMove(); ctrlPanel.setPauseButtonLabel(true); miPause.setEnabled(true); miResume.setEnabled(false); ctrlPanel.requestFocus(); } /** * 用户停止游戏 */ public void stopGame() { playing = false; if (block != null) block.stopMove(); miPlay.setEnabled(true); miPause.setEnabled(true); miResume.setEnabled(false); ctrlPanel.setPlayButtonEnable(true); ctrlPanel.setPauseButtonLabel(true); } /** * 得到当前游戏者设置的游戏难度 * @return int, 游戏难度1－MAX_LEVEL */ public int getLevel() { return ctrlPanel.getLevel(); } /** * 让用户设置游戏难度 * @param level int, 游戏难度1－MAX_LEVEL */ public void setLevel(int level) { if (level < 11 && level > 0) ctrlPanel.setLevel(level); } /** * 得到游戏积分 * @return int, 积分。 */ public int getScore() { if (canvas != null) return canvas.getScore(); return 0; } /** * 得到自上次升级以来的游戏积分，升级以后，此积分清零 * @return int, 积分。 */ public int getScoreForLevelUpdate() { if (canvas != null) return canvas.getScoreForLevelUpdate(); return 0; } /** * 当分数累计到一定的数量时，升一次级 * @return boolean, ture-update successufl, false-update fail */ public boolean levelUpdate() { int curLevel = getLevel(); if (curLevel < MAX_LEVEL) { setLevel(curLevel + 1); canvas.resetScoreForLevelUpdate(); return true; } return false; } /** * 游戏开始 */ private void play() { reset(); playing = true; Thread thread = new Thread(new Game()); thread.start(); } /** * 报告游戏结束了 */ private void reportGameOver() { JOptionPane.showMessageDialog(this, "Game Over!"); } /** * 建立并设置窗口菜单 */ private void createMenu() { bar.add(mGame); bar.add(mControl); bar.add(mWindowStyle); bar.add(mInfo); mGame.add(miNewGame); mGame.addSeparator(); mGame.add(miSetBlockColor); mGame.add(miSetBackColor); mGame.addSeparator(); mGame.add(miTurnHarder); mGame.add(miTurnEasier); mGame.addSeparator(); mGame.add(miExit); mControl.add(miPlay); mControl.add(miPause); mControl.add(miResume); mControl.add(miStop); mWindowStyle.add(miAsWindows); mWindowStyle.add(miAsMotif); mWindowStyle.add(miAsMetal); mInfo.add(miAuthor); mInfo.add(miSourceInfo); setJMenuBar(bar); miPause.setAccelerator( KeyStroke.getKeyStroke(KeyEvent.VK_P, KeyEvent.CTRL_MASK)); miResume.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0)); miNewGame.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { stopGame(); reset(); setLevel(DEFAULT_LEVEL); } }); miSetBlockColor.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { Color newFrontColor = JColorChooser.showDialog(ErsBlocksGame.this, "Set color for block", canvas.getBlockColor()); if (newFrontColor != null) canvas.setBlockColor(newFrontColor); } }); miSetBackColor.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { Color newBackColor = JColorChooser.showDialog(ErsBlocksGame.this, "Set color for block", canvas.getBackgroundColor()); if (newBackColor != null) canvas.setBackgroundColor(newBackColor); } }); miTurnHarder.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { int curLevel = getLevel(); if (curLevel < MAX_LEVEL) setLevel(curLevel + 1); } }); miTurnEasier.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { int curLevel = getLevel(); if (curLevel > 1) setLevel(curLevel - 1); } }); miExit.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { System.exit(0); } }); miPlay.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { playGame