java小游戏编程

/** * File: ControlPanel.java * User:相思无偿 * Date: 2004.12.3 * Describe: 俄罗斯方块的 Java 实现 */ import javax.swing.*; import javax.swing.border.Border; import javax.swing.border.EtchedBorder; import java.awt.*; import java.awt.event.*; /** * 控制面板类，继承自JPanel. * 上边安放预显窗口、等级、得分、控制按钮 * 主要用来控制游戏进程。 */ class ControlPanel extends JPanel { private JTextField tfLevel = new JTextField( + ErsBlocksGame.DEFAULT_LEVEL), tfScore = new JTextField(0); private JButton btPlay = new JButton(Play), btPause = new JButton(Pause), btStop = new JButton(Stop), btTurnLevelUp = new JButton(Turn hard), btTurnLevelDown = new JButton(Turn easy); private JPanel plTip = new JPanel(new BorderLayout()); private TipPanel plTipBlock = new TipPanel(); private JPanel plInfo = new JPanel(new GridLayout(4, 1)); private JPanel plButton = new JPanel(new GridLayout(5, 1)); private Timer timer; private ErsBlocksGame game; private Border border = new EtchedBorder( EtchedBorder.RAISED, Color.white, new Color(148, 145, 140)); /** * 控制面板类的构造函数 * @param game ErsBlocksGame, ErsBoxesGame类的一个实例引用， * 方便直接控制ErsBoxesGame类的行为。 */ public ControlPanel(final ErsBlocksGame game) { setLayout(new GridLayout(3, 1, 0, 4)); this.game = game; plTip.add(new JLabel(Next block), BorderLayout.NORTH); plTip.add(plTipBlock); plTip.setBorder(border); plInfo.add(new JLabel(Level)); plInfo.add(tfLevel); plInfo.add(new JLabel(Score)); plInfo.add(tfScore); plInfo.setBorder(border); tfLevel.setEditable(false); tfScore.setEditable(false); plButton.add(btPlay); plButton.add(btPause); plButton.add(btStop); plButton.add(btTurnLevelUp); plButton.add(btTurnLevelDown); plButton.setBorder(border); add(plTip); add(plInfo); add(plButton); addKeyListener(new ControlKeyListener()); btPlay.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { game.playGame(); } }); btPause.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { if (btPause.getText().equals(new String(Pause))) { game.pauseGame(); } else { game.resumeGame(); } } }); btStop.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { game.stopGame(); } }); btTurnLevelUp.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { try { int level = Integer.parseInt(tfLevel.getText()); if (level < ErsBlocksGame.MAX_LEVEL) tfLevel.setText( + (level + 1)); } catch (NumberFormatException e) { } requestFocus(); } }); btTurnLevelDown.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { try { int level = Integer.parseInt(tfLevel.getText()); if (level > 1) tfLevel.setText( + (level - 1)); } catch (NumberFormatException e) { } requestFocus(); } }); addComponentListener(new ComponentAdapter() { public void componentResized(ComponentEvent ce) { plTipBlock.fanning(); } }); timer = new Timer(500, new ActionListener() { public void actionPerformed(ActionEvent ae) { tfScore.setText( + game.getScore()); int scoreForLevelUpdate = game.getScoreForLevelUpdate(); if (scoreForLevelUpdate >= ErsBlocksGame.PER_LEVEL_SCORE && scoreForLevelUpdate > 0) game.levelUpdate(); } }); timer.start(); } /** * 设置预显窗口的样式， * @param style int,对应ErsBlock类的STYLES中的28个值 */ public void setTipStyle(int style) { plTipBlock.setStyle(style); } /** * 取得用户设置的游戏等级。 * @return int, 难度等级，1 － ErsBlocksGame.MAX_LEVEL */ public int getLevel() { int level = 0; try { level = Integer.parseInt(tfLevel.getText()); } catch (NumberFormatException e) { } return level; } /** * 让用户修改游戏难度等级。 * @param level 修改后的游戏难度等级 */ public void setLevel(int level) { if (level > 0 && level < 11) tfLevel.setText( + level); } /** * 设置开始按钮的状态。 */ public void setPlayButtonEnable(boolean enable) { btPlay.setEnabled(enable); } public void setPauseButtonLabel(boolean pause) { btPause.setText(pause ? Pause : Continue); } /** * 重置控制面板 */ public void reset() { tfScore.setText(0); plTipBlock.setStyle(0); } /** * 重新计算TipPanel里的boxes[][]里的小框的大小 */ public void fanning() { plTipBlock.fanning(); } /** * 预显窗口的实现细节类 */ private class TipPanel extends JPanel { private Color backColor = Color.darkGray, frontColor = Color.lightGray; private ErsBox[][] boxes = new ErsBox[ErsBlock.BOXES_ROWS][ErsBlock.BOXES_COLS]; private int style, boxWidth, boxHeight; private boolean isTiled = false; /** * 预显窗口类构造函数 */ public TipPanel() { for (int i = 0; i < boxes.length; i++) { for (int j = 0; j < boxes[i].length; j++) boxes[i][j] = new ErsBox(false); } } /** * 预显窗口类构造函数 * @param backColor Color, 窗口的背景色 * @param frontColor Color, 窗口的前景色 */ public TipPanel(Color backColor, Color frontColor) { this(); this.backColor = backColor; this.frontColor = frontColor; } /** * 设置预显窗口的方块样式 * @param style int,对应ErsBlock类的STYLES中的28个值 */ public void setStyle(int style) { this.style = style; repaint(); } /** * 覆盖JComponent类的函数，画组件。 * @param g 图形设备环境 */ public void paintComponent(Graphics g) { super.paintComponent(g); if (!isTiled) fanning(); int key = 0x8000; for (int i = 0; i < boxes.length; i++) { for (int j = 0; j < boxes[i].length; j++) { Color color = (((key & style) != 0) ? frontColor : backColor); g.setColor(color); g.fill3DRect(j * boxWidth, i * boxHeight, boxWidth, boxHeight, true); key >>= 1; } } } /** * 根据窗口的大小，自动调整方格的尺寸 */ public void fanning() { boxWidth = getSize().width / ErsBlock.BOXES_COLS; boxHeight = getSize().height / ErsBlock.BOXES_ROWS; isTiled = true; } } private class ControlKeyListener extends KeyAdapter { public void keyPressed(KeyEvent ke) { if (!game.isPlaying()) return; ErsBlock block = game.getCurBlock(); switch (ke.getKeyCode()) { case KeyEvent.VK_DOWN: block.moveDown(); break; case KeyEvent.VK_LEFT: block.moveLeft(); break; case KeyEvent.VK_RIGHT: block.moveRight(); break; case KeyEvent.VK_UP: block.turnNext(); break; default: break; } } } }