野人与传教士过河问题的实现

/** * File: ErsBlocksGame.java * User: 吴永坚 * Date: 2006.11.8 * Describe: 俄罗斯方块的 Java 实现 */ package Tetris; 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; /** * 默认慢速休息时间是200ms */ public final static int SLOW_SLEEP_TIME = 200; /** * 默认中速休息时间是100ms */ public final static int MIDDLE_SLEEP_TIME = 100; /** * 默认快速休息时间是0ms */ public final static int FAST_SLEEP_TIME = 0; public int delLine1 = 0; public int delLine2 = 0; public int delLine3 = 0; public int delLine4 = 0; public boolean autoPlay = false; private int showSleepTime; private Thread thread; private MyRand myRand = new MyRand(0.2, 0.2, 0.15, 0.15, 0.15, 0.075, 0.075); private GameCanvas canvas; private ErsBlock block; private boolean playing = false; private ControlPanel ctrlPanel; private JMenuBar bar = new JMenuBar(); private JMenu mGame = new JMenu("游戏"), mControl = new JMenu("控制"), mWindowStyle = new JMenu("风格"), mInfo = new JMenu("作者"), mSpeed = new JMenu("演示速度设置"); private JMenuItem miNewGame = new JMenuItem("新游戏"), miSetBlockColor = new JMenuItem("设置方块颜色"), miSetBackColor = new JMenuItem("设置背景颜色"), miTurnHarder = new JMenuItem("增加难度"), miTurnEasier = new JMenuItem("降低难度"), miExit = new JMenuItem("退出"), miHplay = new JMenuItem("人工游戏"), miCplay = new JMenuItem("电脑游戏"), miPause = new JMenuItem("暂停游戏"), miResume = new JMenuItem("恢复游戏"), miStop = new JMenuItem("结束游戏"), miSetFast = new JMenuItem("快速"), miSetMiddle = new JMenuItem("中速"), miSetSlow = new JMenuItem("慢速"), miAuthor = new JMenuItem("关于智能俄罗斯"); private JCheckBoxMenuItem miAsWindows = new JCheckBoxMenuItem("Windows"), miAsMotif = new JCheckBoxMenuItem("Motif"), miAsMetal = new JCheckBoxMenuItem("Metal", true); private ErsSelectOpt selectOpt; /** * 主游戏类的构造函数 * @param title String，窗口标题 */ public ErsBlocksGame(String title) { super(title); delLine1 = 0; delLine2 = 0; delLine3 = 0; delLine4 = 0; autoPlay = false; setSize(315, 400); Dimension scrSize = Toolkit.getDefaultToolkit().getScreenSize(); setLocation((scrSize.width - getSize().width) / 2, (scrSize.height - getSize().height) / 2); createMenu(); Container container = getContentPane(); container.setLayout(new BorderLayout()); //canvas = new GameCanvas(20, 12); canvas = new GameCanvas(20, 10); 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() { delLine1 = 0; delLine2 = 0; delLine3 = 0; delLine4 = 0; showSleepTime = 200; 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; } /** * 电脑开始游戏 */ public void computerPlayGame() { autoPlay = true; computerPlay(); ctrlPanel.setComputerPlayButtonEnabled(false); ctrlPanel.setHumanPlayButtonEnabled(false); miCplay.setEnabled(false); miHplay.setEnabled(false); ctrlPanel.requestFocus(); } /** * 电脑开始游戏 */ public void humanPlayGame() { autoPlay = false; humanPlay(); ctrlPanel.setComputerPlayButtonEnabled(false); ctrlPanel.setHumanPlayButtonEnabled(false); miCplay.setEnabled(false); miHplay.setEnabled(false); ctrlPanel.requestFocus(); } /** * 游戏暂停 */ public void pauseGame() { if (block != null && autoPlay == false){ block.pauseMove(); } else if(block != null && autoPlay == true){ thread.suspend(); } ctrlPanel.setPauseButtonEnabled(false); ctrlPanel.setResumeButtonEnabled(true); miPause.setEnabled(false); miResume.setEnabled(true); } /** * 让暂停中的游戏继续 */ public void resumeGame() { if (block != null && autoPlay == false){ block.resumeMove(); } else if(block != null && autoPlay == true){ thread.resume(); } ctrlPanel.setPauseButtonEnabled(true); ctrlPanel.setResumeButtonEnabled(false); miPause.setEnabled(true); miResume.setEnabled(false); ctrlPanel.requestFocus(); } /** * 用户停止游戏 */ public void stopGame() { playing = false; if (block != null) block.stopMove(); miCplay.setEnabled(true); miHplay.setEnabled(true); miPause.setEnabled(true); miResume.setEnabled(false); ctrlPanel.setComputerPlayButtonEnabled(true); ctrlPanel.setHumanPlayButtonEnabled(true); ctrlPanel.setPauseButtonEnabled(true); ctrlPanel.setResumeButtonEnabled(false); } /** * 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; } /** * 得到消去1行的总数 * @return int, 消去1行的总数。 */ public int getDelLine1() { return delLine1; } /** * 得到消去2行的总数 * @return int, 消去2行的总数。 */ public int getDelLine2() { return delLine2; } /** * 得到消去3行的总数 * @return int, 消去3行的总数。 */ public int getDelLine3() { return delLine3; } /** * 得到消去4行的总数 * @return int, 消去4行的总数。 */ public int getDelLine4() { return delLine4; } /** * 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; } /** * 电脑智能玩游戏开始 */ private void computerPlay() { reset(); playing = true; thread = new Thread(new Game()); thread.start(); } /** * 人工玩游戏开始 */ private void humanPlay() { reset(); playing = true; thread = new Thread(new Game()); thread.start(); } /** * 报告游戏结束了 */ private void reportGameOver() { String msg = "游戏结束\n一共消去行数为: "; msg += String.valu