java动画之单缓冲与双缓冲技术

 

这是一个简单的俄罗斯方块游戏,第一个采用JFrame默认的双缓冲,但是在快速重复执行repaint()方法时还是会闪烁,这是由于java绘图帧率 不及屏幕刷新率,所以在第二个程序中使用了双缓冲技术,先将要绘制的图像绘制到Image对象中,然后一次性把这个Image对象通过Paint()方法 绘制到窗口上:

package 俄罗斯方块; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Menu; import java.awt.MenuBar; import java.awt.MenuItem; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JFrame; import javax.swing.JOptionPane; public class JGameFrame_SigalBuffered extends JFrame implements Runnable, ActionListener, KeyListener { private static final long serialVersionUID = 2L; private final int blockSize = 20; // 一个原子方块的边长 private final static int maxBlockRows = 4; // 一个组合形状所占的最大行数 private static int roomCols = 18; // 游戏空间的列数,也就是宽度 private static int roomRows = 25;// 游戏空间的行数,就是高度 private static double randBlock; private static boolean isBlocked = false; // 状态标志,用来标示是否遇到阻碍,从而下降或者停止 private static boolean gameGoing = true;// 标志游戏是否结束 private static byte map[][] = new byte[roomRows + maxBlockRows][roomCols]; private static int easy = 1000;// 四种游戏难度和一个瞬时落下的延时时间 private static int middle = 500; private static int hard = 200; private static int crazy = 100; private static int immediate = 1; private static int difficulse = easy;// 游戏速度 private static int selectDifficult = middle; private static boolean NormalSpeed = true; private static int PlayerScore = 0; static Thread gameThread; public static void main(String[] args) { JGameFrame_SigalBuffered my = new JGameFrame_SigalBuffered(); gameThread = new Thread(my); gameThread.start(); } public JGameFrame_SigalBuffered() { super("俄罗斯方块"); setSize(roomCols * blockSize, (roomRows + 1) * blockSize + 30); setLocationRelativeTo(null); setAlwaysOnTop(true); setDefaultCloseOperation(EXIT_ON_CLOSE); setResizable(false); MenuBar manBar = new MenuBar(); Menu setMenu = new Menu("选项"); MenuItem exit = new MenuItem("exit"); exit.addActionListener(this); MenuItem settingItem = new MenuItem("option"); settingItem.addActionListener(this); setMenu.add(settingItem); setMenu.add(exit); manBar.add(setMenu); setMenuBar(manBar); addKeyListener(this); setVisible(true); } Color live = new Color(37,130,123); Color dead = new Color(171,162,123); Color sColor = new Color(148,56,53,80); @Override public void paint(Graphics g) { super.paint(g); for (int i = 0; i < roomRows; i++) { for (int j = 0; j < roomCols; j++) { if (map[i + maxBlockRows][j] == 1) { g.setColor(live); g.fillRoundRect(j * blockSize, (i + 2) * blockSize + 3, blockSize - 1, blockSize - 1, blockSize / 4, blockSize / 4); g.drawString("" + (i + 1), i, j); } else if (map[i + maxBlockRows][j] == 2) { g.setColor(dead); g.fillRoundRect(j * blockSize, (i + 2) * blockSize + 5, blockSize - 1, blockSize - 1, blockSize / 4, blockSize / 4); } } } g.setColor(sColor); g.setFont(new Font("Jokerman", Font.PLAIN, 60)); g.drawString("Score:"+PlayerScore, getWidth()/2-120, getHeight()/2-40); } private void fastenBlocks() { byte[] blockCont = new byte[roomRows]; int score = 0; for (int i = 0; i < roomRows; i++) { blockCont[i] = 0; for (int j = 0; j < roomCols; j++) { if (map[i + maxBlockRows][j] == 1) { map[i + maxBlockRows][j] = 2; blockCont[i] += 1; } else if (map[i + maxBlockRows][j] == 2) { blockCont[i] += 1; } } } for (int i = 2; i < roomRows; i++) { if (blockCont[i]==roomCols) {//如果第i行满了,则整体下移一行 clearRow(i+maxBlockRows); score++; } } PlayerScore += score*score; repaint(); } private void displayAllElem() { for (int i = 0; i < roomRows; i++) { for (int j = 0; j < roomCols; j++) { System.out.print(map[i+maxBlockRows][j]); } System.out.print('/n'); } } private void clearRow(int i) { System.out.println("The row is full of blocks"+i); displayAllElem(); for (int j = i; j >2 ; j--) { for (int j2 = 0; j2 < roomCols; j2++) { map[j][j2] = map[j-1][j2]; } } System.out.println("The row "+i+" move over!"); displayAllElem(); } private void fallDown() {// 传递给函数的是从0开始的真实行数 isBlocked = false; for (int j = 0; j < maxBlockRows; j++) // 从当前行指针开始依次往上检查4行,如果有阻碍情况置is blocked为true for (int i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1 && map[rowPointer - j + 1][i] == 2) { isBlocked = true; break; } if (isBlocked) { break; } } if (isBlocked == false) {// 如果检查完毕发现没有阻碍,那么把方块下移一行 for (int i = 0; i < maxBlockRows; i++) { for (int j = 0; j < roomCols; j++) { if (map[rowPointer - i][j] == 1) { map[rowPointer - i + 1][j] = 1; map[rowPointer - i][j] = 0; repaint(); } } } } else { if (rowPointer <= maxBlockRows) { loseIs(); } } } private void moveToLeft() { boolean leftBlocked = false; for (int j = 0; j < maxBlockRows; j++) { if (map[rowPointer - j][0] == 1) { leftBlocked = true; break; } else { // 从当前行指针开始依次往上检查4行,如果有阻碍情况置left blocked为true for (int i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1 && map[rowPointer - j][i - 1] == 2) { leftBlocked = true; break; } if (leftBlocked) { break; } } } } if (leftBlocked == false) { for (int i = 0; i < maxBlockRows; i++) { for (int j = 0; j < roomCols; j++) { if (map[rowPointer - i][j] == 1) { map[rowPointer - i][j - 1] = 1; map[rowPointer - i][j] = 0; } } repaint(); } } } private void moveToRight() { boolean rightBlocked = false; for (int j = 0; j < maxBlockRows; j++) { if (map[rowPointer - j][roomCols - 1] == 1) { rightBlocked = true; break; } else { // 从当前行指针开始依次往上检查4行,如果有阻碍情况置right blocked为true for (int i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1 && map[rowPointer - j][i + 1] == 2) { rightBlocked = true; break; } if (rightBlocked) { break; } } } } if (rightBlocked == false) { for (int i = 0; i < maxBlockRows; i++) { for (int j = roomCols - 1; j >= 0; j--) { if (map[rowPointer - i][j] == 1) { map[rowPointer - i][j + 1] = 1; map[rowPointer - i][j] = 0; } } repaint(); } } } private void moveDown() { if (NormalSpeed) { NormalSpeed = false; } else { NormalSpeed = true; } } private void addNewBlock() {// 向room中添加一个新的方块,用随机数生成 randBlock = Math.random() * 6; int center = roomCols / 2; if (randBlock > 5) {// 方块6: 拐弯N型 map[1][center] = map[2][center] = map[2][center - 1] = map[3][center - 1] = 1; } else if (randBlock > 4) {// 方块4: 土字 map[2][center] = map[3][center - 1] = map[3][center] = map[3][center + 1] = 1; } else if (randBlock > 3) {// 方块3: 方块 map[2][center] = map[2][center - 1] = map[3][center] = map[3][center - 1] = 1; } else if (randBlock > 2) {// 方块2: | 长条直杠杠 map[0][center] = map[1][center] = map[2][center] = map[3][center] = 1; } else if (randBlock > 1) {// 方块1: L型 map[1][center] = map[2][center] = map[3][center] = map[3][center + 1] = 1; } else {// 方块0: 拐弯N map[1][center] = map[2][center] = map[2][center + 1] = map[3][center + 1] = 1; } } private void RollUp() { try { if ((int) randBlock == 3) {// 方块3: 方块 return; } else if ((int) randBlock == 2) {// 方块2: | 长条直杠杠 byte[][] clip = new byte[maxBlockRows][maxBlockRows]; byte startCol = 0; for (byte i = 0; i < roomCols; i++) { if (map[rowPointer][i] == 1) { startCol = i; break; } } for (int i = 0; i < maxBlockRows; i++) { for (int i1 = 0; i1 < maxBlockRows; i1++) { if (map[rowPointer - maxBlockRows + 1 + i][i1 + startCol] == 2) { return; } } } // 已经获得当前方块区域的左下角坐标(rowpointer,startcol) if (map[rowPointer][startCol + 1] == 1) {// 如果直杠杠是横的状态 for (int i = 0; i < maxBlockRows; i++) { clip[i][0] = 1; } for (int i = 0; i < maxBlockRows; i++) { for (int i1 = 1; i1 < maxBlockRows; i1++) { clip[i][i1] = 0; } } } else {// 如果直杠杠是竖着的状态 for (int i = 0; i < maxBlockRows; i++) { clip[maxBlockRows - 1][i] = 1;// 把最下面的一行赋1 } for (int i = 1; i < maxBlockRows; i++) { for (int i1 = 0; i1 < maxBlockRows; i1++) { clip[maxBlockRows - i - 1][i1] = 0;// 其余赋0 } } } for (int i = 0; i < maxBlockRows; i++) for (int i1 = 0; i1 < maxBlockRows; i1++) { map[rowPointer - maxBlockRows + 1 + i][startCol + i1] = clip[i][i1]; } repaint(); } else {// 其他所有类型的方块都一样处理就可以,因为他们都是最多占3行3列 byte[][] clip = new byte[maxBlockRows - 1][maxBlockRows - 1]; byte startCol = (byte) roomCols; for (byte j = 0; j < maxBlockRows - 1; j++) for (byte i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1) { startCol = i < startCol ? i : startCol; } } for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { if (map[rowPointer - maxBlockRows + 2 + j][startCol + maxBlockRows - 2 - i] == 2) return; } } // 检测没有阻碍,开始赋给临时数组旋转后的值 for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { clip[maxBlockRows - 2 - j][i] = map[rowPointer - 2 + i][startCol + j]; } } // 开始变化 for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { map[rowPointer - maxBlockRows + 2 + i][startCol + j] = clip[i][j]; } } repaint(); // 将rowPointer归位 for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { if (map[rowPointer - i][startCol + j] != 0) { rowPointer = rowPointer - i; return; } } } } } catch (ArrayIndexOutOfBoundsException e) { System.out.println("由于java强大的数组越界访问检查机制,我可以在这些特殊情况下自动返回了"); return; } } @SuppressWarnings("deprecation") private void loseIs() {// 输了,执行该方法,并对玩家进行一些讽刺~~ System.out.print("You lose!~~~~~~~~"); gameThread.stop(); } static int rowPointer; @Override public void run() { try { addNewBlock(); while (gameGoing) { rowPointer = maxBlockRows - 1; while (rowPointer < roomRows + maxBlockRows - 1) { fallDown(); if (isBlocked) { break; } rowPointer++; repaint(); difficulse = selectDifficult; if (NormalSpeed) { Thread.sleep(difficulse); } else { Thread.sleep(immediate); } } NormalSpeed = true; fastenBlocks(); addNewBlock(); } } catch (InterruptedException e) { e.printStackTrace(); } } private Object[] options = { "hard", "middle", "easy", "crazy" }; @Override public void actionPerformed(ActionEvent e) { // gameGoing = false; if (e.getActionCommand().equals("option")) { int difficuce = JOptionPane.showOptionDialog(null, "option", "choose one", JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[2]); switch (difficuce) { case 0: setDifficulse(hard); break; case 1: setDifficulse(middle); break; case 2: setDifficulse(easy); break; case 3: setDifficulse(crazy); break; default: setDifficulse(middle); break; } } else { if (JOptionPane.showConfirmDialog(rootPane, "exit", "are you sure?", JOptionPane.YES_OPTION) == 0) { System.exit(blockSize); } } // gameGoing = true; } public static void setDifficulse(int difficulse) { selectDifficult = difficulse; } @Override public void keyPressed(KeyEvent e) { // left = 37; up 0= 38; right = 39; down = 40; int keycode = e.getKeyCode(); if (keycode == 37) moveToLeft(); else if (keycode == 38) RollUp(); else if (keycode == 39) moveToRight(); else if (keycode == 40) moveDown(); else { System.out.println("What did you pressed?"); } } @Override public void keyReleased(KeyEvent e) { } @Override public void keyTyped(KeyEvent e) { } } 

 

下面这个是双缓冲的代码:

 

package 俄罗斯方块; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Image; import java.awt.Menu; import java.awt.MenuBar; import java.awt.MenuItem; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JFrame; import javax.swing.JOptionPane; public class JGameFrame_DoubleBuffered extends JFrame implements Runnable, ActionListener, KeyListener { private static final long serialVersionUID = 2L; private final int blockSize = 20; // 一个原子方块的边长 private final static int maxBlockRows = 4; // 一个组合形状所占的最大行数 private static int roomCols = 18; // 游戏空间的列数,也就是宽度 private static int roomRows = 25;// 游戏空间的行数,就是高度 private static double randBlock; private static boolean isBlocked = false; // 状态标志,用来标示是否遇到阻碍,从而下降或者停止 private static boolean gameGoing = true;// 标志游戏是否结束 private static byte map[][] = new byte[roomRows + maxBlockRows][roomCols]; private static int easy = 1000;// 四种游戏难度和一个瞬时落下的延时时间 private static int middle = 500; private static int hard = 200; private static int crazy = 100; private static int immediate = 1; private static int difficulse = easy;// 游戏速度 private static int selectDifficult = middle; private static boolean NormalSpeed = true; private static int PlayerScore = 0; static Thread gameThread; private Image buffImage; private Graphics buffGraphics; public static void main(String[] args) { JGameFrame_DoubleBuffered my = new JGameFrame_DoubleBuffered(); gameThread = new Thread(my); gameThread.start(); } public JGameFrame_DoubleBuffered() { super("俄罗斯方块"); setSize(roomCols * blockSize, (roomRows + 1) * blockSize + 30); setLocationRelativeTo(null); setAlwaysOnTop(true); setDefaultCloseOperation(EXIT_ON_CLOSE); setResizable(false); MenuBar manBar = new MenuBar(); Menu setMenu = new Menu("选项"); MenuItem exit = new MenuItem("exit"); exit.addActionListener(this); MenuItem settingItem = new MenuItem("option"); settingItem.addActionListener(this); setMenu.add(settingItem); setMenu.add(exit); manBar.add(setMenu); setMenuBar(manBar); addKeyListener(this); setVisible(true); } Color live = new Color(37,130,123); Color dead = new Color(171,162,123); Color sColor = new Color(148,56,53,80); @Override public void update(Graphics g) { g.drawImage(buffImage, 0, 0, null); } @Override public void paint(Graphics g) { // TODO Auto-generated method stub update(g); } public void MYpaint() { buffImage = createImage(roomCols * blockSize, (roomRows + 1) * blockSize + 30); buffGraphics = buffImage.getGraphics(); for (int i = 0; i < roomRows; i++) { for (int j = 0; j < roomCols; j++) { if (map[i + maxBlockRows][j] == 1) { buffGraphics.setColor(live); buffGraphics.fillRoundRect(j * blockSize, (i + 2) * blockSize + 3, blockSize - 1, blockSize - 1, blockSize / 4, blockSize / 4); buffGraphics.drawString("" + (i + 1), i, j); } else if (map[i + maxBlockRows][j] == 2) { buffGraphics.setColor(dead); buffGraphics.fillRoundRect(j * blockSize, (i + 2) * blockSize + 5, blockSize - 1, blockSize - 1, blockSize / 4, blockSize / 4); } } } buffGraphics.setColor(sColor); buffGraphics.setFont(new Font("Jokerman", Font.PLAIN, 60)); buffGraphics.drawString("Score:"+PlayerScore, getWidth()/2-120, getHeight()/2-40); } private void fastenBlocks() { byte[] blockCont = new byte[roomRows]; int score = 0; for (int i = 0; i < roomRows; i++) { blockCont[i] = 0; for (int j = 0; j < roomCols; j++) { if (map[i + maxBlockRows][j] == 1) { map[i + maxBlockRows][j] = 2; blockCont[i] += 1; } else if (map[i + maxBlockRows][j] == 2) { blockCont[i] += 1; } } } for (int i = 2; i < roomRows; i++) { if (blockCont[i]==roomCols) {//如果第i行满了,则整体下移一行 clearRow(i+maxBlockRows); score++; } } PlayerScore += score*score; repaint(); } private void clearRow(int i) { System.out.println("The row is full of blocks"+i); for (int j = i; j >2 ; j--) { for (int j2 = 0; j2 < roomCols; j2++) { map[j][j2] = map[j-1][j2]; } } System.out.println("The row "+i+" move over!"); } private void fallDown() {// 传递给函数的是从0开始的真实行数 isBlocked = false; for (int j = 0; j < maxBlockRows; j++) // 从当前行指针开始依次往上检查4行,如果有阻碍情况置is blocked为true for (int i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1 && map[rowPointer - j + 1][i] == 2) { isBlocked = true; break; } if (isBlocked) { break; } } if (isBlocked == false) {// 如果检查完毕发现没有阻碍,那么把方块下移一行 for (int i = 0; i < maxBlockRows; i++) { for (int j = 0; j < roomCols; j++) { if (map[rowPointer - i][j] == 1) { map[rowPointer - i + 1][j] = 1; map[rowPointer - i][j] = 0; repaint(); } } } } else { if (rowPointer <= maxBlockRows) { loseIs(); } } } private void moveToLeft() { boolean leftBlocked = false; for (int j = 0; j < maxBlockRows; j++) { if (map[rowPointer - j][0] == 1) { leftBlocked = true; break; } else { // 从当前行指针开始依次往上检查4行,如果有阻碍情况置left blocked为true for (int i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1 && map[rowPointer - j][i - 1] == 2) { leftBlocked = true; break; } if (leftBlocked) { break; } } } } if (leftBlocked == false) { for (int i = 0; i < maxBlockRows; i++) { for (int j = 0; j < roomCols; j++) { if (map[rowPointer - i][j] == 1) { map[rowPointer - i][j - 1] = 1; map[rowPointer - i][j] = 0; } } repaint(); } } } private void moveToRight() { boolean rightBlocked = false; for (int j = 0; j < maxBlockRows; j++) { if (map[rowPointer - j][roomCols - 1] == 1) { rightBlocked = true; break; } else { // 从当前行指针开始依次往上检查4行,如果有阻碍情况置right blocked为true for (int i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1 && map[rowPointer - j][i + 1] == 2) { rightBlocked = true; break; } if (rightBlocked) { break; } } } } if (rightBlocked == false) { for (int i = 0; i < maxBlockRows; i++) { for (int j = roomCols - 1; j >= 0; j--) { if (map[rowPointer - i][j] == 1) { map[rowPointer - i][j + 1] = 1; map[rowPointer - i][j] = 0; } } repaint(); } } } private void moveDown() { if (NormalSpeed) { NormalSpeed = false; } else { NormalSpeed = true; } } private void addNewBlock() {// 向room中添加一个新的方块,用随机数生成 randBlock = Math.random() * 6; int center = roomCols / 2; if (randBlock > 5) {// 方块6: 拐弯N型 map[1][center] = map[2][center] = map[2][center - 1] = map[3][center - 1] = 1; } else if (randBlock > 4) {// 方块4: 土字 map[2][center] = map[3][center - 1] = map[3][center] = map[3][center + 1] = 1; } else if (randBlock > 3) {// 方块3: 方块 map[2][center] = map[2][center - 1] = map[3][center] = map[3][center - 1] = 1; } else if (randBlock > 2) {// 方块2: | 长条直杠杠 map[0][center] = map[1][center] = map[2][center] = map[3][center] = 1; } else if (randBlock > 1) {// 方块1: L型 map[1][center] = map[2][center] = map[3][center] = map[3][center + 1] = 1; } else {// 方块0: 拐弯N map[1][center] = map[2][center] = map[2][center + 1] = map[3][center + 1] = 1; } } private void RollUp() { try { if ((int) randBlock == 3) {// 方块3: 方块 return; } else if ((int) randBlock == 2) {// 方块2: | 长条直杠杠 byte[][] clip = new byte[maxBlockRows][maxBlockRows]; byte startCol = 0; for (byte i = 0; i < roomCols; i++) { if (map[rowPointer][i] == 1) { startCol = i; break; } } for (int i = 0; i < maxBlockRows; i++) { for (int i1 = 0; i1 < maxBlockRows; i1++) { if (map[rowPointer - maxBlockRows + 1 + i][i1 + startCol] == 2) { return; } } } // 已经获得当前方块区域的左下角坐标(rowpointer,startcol) if (map[rowPointer][startCol + 1] == 1) {// 如果直杠杠是横的状态 for (int i = 0; i < maxBlockRows; i++) { clip[i][0] = 1; } for (int i = 0; i < maxBlockRows; i++) { for (int i1 = 1; i1 < maxBlockRows; i1++) { clip[i][i1] = 0; } } } else {// 如果直杠杠是竖着的状态 for (int i = 0; i < maxBlockRows; i++) { clip[maxBlockRows - 1][i] = 1;// 把最下面的一行赋1 } for (int i = 1; i < maxBlockRows; i++) { for (int i1 = 0; i1 < maxBlockRows; i1++) { clip[maxBlockRows - i - 1][i1] = 0;// 其余赋0 } } } for (int i = 0; i < maxBlockRows; i++) for (int i1 = 0; i1 < maxBlockRows; i1++) { map[rowPointer - maxBlockRows + 1 + i][startCol + i1] = clip[i][i1]; } repaint(); } else {// 其他所有类型的方块都一样处理就可以,因为他们都是最多占3行3列 byte[][] clip = new byte[maxBlockRows - 1][maxBlockRows - 1]; byte startCol = (byte) roomCols; for (byte j = 0; j < maxBlockRows - 1; j++) for (byte i = 0; i < roomCols; i++) { if (map[rowPointer - j][i] == 1) { startCol = i < startCol ? i : startCol; } } for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { if (map[rowPointer - maxBlockRows + 2 + j][startCol + maxBlockRows - 2 - i] == 2) return; } } // 检测没有阻碍,开始赋给临时数组旋转后的值 for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { clip[maxBlockRows - 2 - j][i] = map[rowPointer - 2 + i][startCol + j]; } } // 开始变化 for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { map[rowPointer - maxBlockRows + 2 + i][startCol + j] = clip[i][j]; } } repaint(); // 将rowPointer归位 for (int i = 0; i < maxBlockRows - 1; i++) { for (int j = 0; j < maxBlockRows - 1; j++) { if (map[rowPointer - i][startCol + j] != 0) { rowPointer = rowPointer - i; return; } } } } } catch (ArrayIndexOutOfBoundsException e) { System.out.println("由于java强大的数组越界访问检查机制,我可以在这些特殊情况下自动返回了"); return; } } @SuppressWarnings("deprecation") private void loseIs() {// 输了,执行该方法,并对玩家进行一些讽刺~~ System.out.print("You lose!~~~~~~~~"); gameThread.stop(); } static int rowPointer; @Override public void run() { try { addNewBlock(); while (gameGoing) { rowPointer = maxBlockRows - 1; while (rowPointer < roomRows + maxBlockRows - 1) { fallDown(); if (isBlocked) { break; } rowPointer++; MYpaint(); repaint(); difficulse = selectDifficult; if (NormalSpeed) { Thread.sleep(difficulse); } else { Thread.sleep(immediate); } } NormalSpeed = true; fastenBlocks(); addNewBlock(); } } catch (InterruptedException e) { e.printStackTrace(); } } private Object[] options = { "hard", "middle", "easy", "crazy" }; @Override public void actionPerformed(ActionEvent e) { if (e.getActionCommand().equals("option")) { int difficuce = JOptionPane.showOptionDialog(null, "option", "choose one", JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[2]); switch (difficuce) { case 0: setDifficulse(hard); break; case 1: setDifficulse(middle); break; case 2: setDifficulse(easy); break; case 3: setDifficulse(crazy); break; default: setDifficulse(middle); break; } } else { if (JOptionPane.showConfirmDialog(rootPane, "exit", "are you sure?", JOptionPane.YES_OPTION) == 0) { System.exit(blockSize); } } } public static void setDifficulse(int difficulse) { selectDifficult = difficulse; } @Override public void keyPressed(KeyEvent e) { // left = 37; up 0= 38; right = 39; down = 40; int keycode = e.getKeyCode(); if (keycode == 37) moveToLeft(); else if (keycode == 38) RollUp(); else if (keycode == 39) moveToRight(); else if (keycode == 40) moveDown(); else { System.out.println("What did you pressed?"); } } @Override public void keyReleased(KeyEvent e) { } @Override public void keyTyped(KeyEvent e) { } }

使用双缓冲技术后效果还是非常明显的,绘图是绝不会闪烁而且看起开更流畅了!

但是现在使用还不是很熟练,继续努力!!