大橙子网站建设,新征程启航
为企业提供网站建设、域名注册、服务器等服务
俄罗斯方块——java源代码提供
创新互联自成立以来,一直致力于为企业提供从网站策划、网站设计、成都网站建设、成都网站制作、电子商务、网站推广、网站优化到为企业提供个性化软件开发等基于互联网的全面整合营销服务。公司拥有丰富的网站建设和互联网应用系统开发管理经验、成熟的应用系统解决方案、优秀的网站开发工程师团队及专业的网站设计师团队。
import java.awt.*;
import java.awt.event.*;
//俄罗斯方块类
public class ERS_Block extends Frame{
public static boolean isPlay=false;
public static int level=1,score=0;
public static TextField scoreField,levelField;
public static MyTimer timer;
GameCanvas gameScr;
public static void main(String[] argus){
ERS_Block ers = new ERS_Block("俄罗斯方块游戏 V1.0 Author:Vincent");
WindowListener win_listener = new WinListener();
ers.addWindowListener(win_listener);
}
//俄罗斯方块类的构造方法
ERS_Block(String title){
super(title);
setSize(600,480);
setLayout(new GridLayout(1,2));
gameScr = new GameCanvas();
gameScr.addKeyListener(gameScr);
timer = new MyTimer(gameScr);
timer.setDaemon(true);
timer.start();
timer.suspend();
add(gameScr);
Panel rightScr = new Panel();
rightScr.setLayout(new GridLayout(2,1,0,30));
rightScr.setSize(120,500);
add(rightScr);
//右边信息窗体的布局
MyPanel infoScr = new MyPanel();
infoScr.setLayout(new GridLayout(4,1,0,5));
infoScr.setSize(120,300);
rightScr.add(infoScr);
//定义标签和初始值
Label scorep = new Label("分数:",Label.LEFT);
Label levelp = new Label("级数:",Label.LEFT);
scoreField = new TextField(8);
levelField = new TextField(8);
scoreField.setEditable(false);
levelField.setEditable(false);
infoScr.add(scorep);
infoScr.add(scoreField);
infoScr.add(levelp);
infoScr.add(levelField);
scorep.setSize(new Dimension(20,60));
scoreField.setSize(new Dimension(20,60));
levelp.setSize(new Dimension(20,60));
levelField.setSize(new Dimension(20,60));
scoreField.setText("0");
levelField.setText("1");
//右边控制按钮窗体的布局
MyPanel controlScr = new MyPanel();
controlScr.setLayout(new GridLayout(5,1,0,5));
rightScr.add(controlScr);
//定义按钮play
Button play_b = new Button("开始游戏");
play_b.setSize(new Dimension(50,200));
play_b.addActionListener(new Command(Command.button_play,gameScr));
//定义按钮Level UP
Button level_up_b = new Button("提高级数");
level_up_b.setSize(new Dimension(50,200));
level_up_b.addActionListener(new Command(Command.button_levelup,gameScr));
//定义按钮Level Down
Button level_down_b =new Button("降低级数");
level_down_b.setSize(new Dimension(50,200));
level_down_b.addActionListener(new Command(Command.button_leveldown,gameScr));
//定义按钮Level Pause
Button pause_b =new Button("游戏暂停");
pause_b.setSize(new Dimension(50,200));
pause_b.addActionListener(new Command(Command.button_pause,gameScr));
//定义按钮Quit
Button quit_b = new Button("退出游戏");
quit_b.setSize(new Dimension(50,200));
quit_b.addActionListener(new Command(Command.button_quit,gameScr));
controlScr.add(play_b);
controlScr.add(level_up_b);
controlScr.add(level_down_b);
controlScr.add(pause_b);
controlScr.add(quit_b);
setVisible(true);
gameScr.requestFocus();
}
}
//重写MyPanel类,使Panel的四周留空间
class MyPanel extends Panel{
public Insets getInsets(){
return new Insets(30,50,30,50);
}
}
//游戏画布类
class GameCanvas extends Canvas implements KeyListener{
final int unitSize = 30; //小方块边长
int rowNum; //正方格的行数
int columnNum; //正方格的列数
int maxAllowRowNum; //允许有多少行未削
int blockInitRow; //新出现块的起始行坐标
int blockInitCol; //新出现块的起始列坐标
int [][] scrArr; //屏幕数组
Block b; //对方快的引用
//画布类的构造方法
GameCanvas(){
rowNum = 15;
columnNum = 10;
maxAllowRowNum = rowNum - 2;
b = new Block(this);
blockInitRow = rowNum - 1;
blockInitCol = columnNum/2 - 2;
scrArr = new int [32][32];
}
//初始化屏幕,并将屏幕数组清零的方法
void initScr(){
for(int i=0;irowNum;i++)
for (int j=0; jcolumnNum;j++)
scrArr[j]=0;
b.reset();
repaint();
}
//重新刷新画布方法
public void paint(Graphics g){
for(int i = 0; i rowNum; i++)
for(int j = 0; j columnNum; j++)
drawUnit(i,j,scrArr[j]);
}
//画方块的方法
public void drawUnit(int row,int col,int type){
scrArr[row][col] = type;
Graphics g = getGraphics();
tch(type){ //表示画方快的方法
case 0: g.setColor(Color.black);break; //以背景为颜色画
case 1: g.setColor(Color.blue);break; //画正在下落的方块
case 2: g.setColor(Color.magenta);break; //画已经落下的方法
}
g.fill3DRect(col*unitSize,getSize().height-(row+1)*unitSize,unitSize,unitSize,true);
g.dispose();
}
public Block getBlock(){
return b; //返回block实例的引用
}
//返回屏幕数组中(row,col)位置的属性值
public int getScrArrXY(int row,int col){
if (row 0 || row = rowNum || col 0 || col = columnNum)
return(-1);
else
return(scrArr[row][col]);
}
//返回新块的初始行坐标方法
public int getInitRow(){
return(blockInitRow); //返回新块的初始行坐标
}
//返回新块的初始列坐标方法
public int getInitCol(){
return(blockInitCol); //返回新块的初始列坐标
}
//满行删除方法
void deleteFullLine(){
int full_line_num = 0;
int k = 0;
for (int i=0;irowNum;i++){
boolean isfull = true;
L1:for(int j=0;jcolumnNum;j++)
if(scrArr[j] == 0){
k++;
isfull = false;
break L1;
}
if(isfull) full_line_num++;
if(k!=0 k-1!=i !isfull)
for(int j = 0; j columnNum; j++){
if (scrArr[j] == 0)
drawUnit(k-1,j,0);
else
drawUnit(k-1,j,2);
scrArr[k-1][j] = scrArr[j];
}
}
for(int i = k-1 ;i rowNum; i++){
for(int j = 0; j columnNum; j++){
drawUnit(i,j,0);
scrArr[j]=0;
}
}
ERS_Block.score += full_line_num;
ERS_Block.scoreField.setText(""+ERS_Block.score);
}
//判断游戏是否结束方法
boolean isGameEnd(){
for (int col = 0 ; col columnNum; col ++){
if(scrArr[maxAllowRowNum][col] !=0)
return true;
}
return false;
}
public void keyTyped(KeyEvent e){
}
public void keyReleased(KeyEvent e){
}
//处理键盘输入的方法
public void keyPressed(KeyEvent e){
if(!ERS_Block.isPlay)
return;
tch(e.getKeyCode()){
case KeyEvent.VK_DOWN:b.fallDown();break;
case KeyEvent.VK_LEFT:b.leftMove();break;
case KeyEvent.VK_RIGHT:b.rightMove();break;
case KeyEvent.VK_SPACE:b.leftTurn();break;
}
}
}
//处理控制类
class Command implements ActionListener{
static final int button_play = 1; //给按钮分配编号
static final int button_levelup = 2;
static final int button_leveldown = 3;
static final int button_quit = 4;
static final int button_pause = 5;
static boolean pause_resume = true;
int curButton; //当前按钮
GameCanvas scr;
//控制按钮类的构造方法
Command(int button,GameCanvas scr){
curButton = button;
this.scr=scr;
}
//按钮执行方法
public void actionPerformed (ActionEvent e){
tch(curButton){
case button_play:if(!ERS_Block.isPlay){
scr.initScr();
ERS_Block.isPlay = true;
ERS_Block.score = 0;
ERS_Block.scoreField.setText("0");
ERS_Block.timer.resume();
}
scr.requestFocus();
break;
case button_levelup:if(ERS_Block.level 10){
ERS_Block.level++;
ERS_Block.levelField.setText(""+ERS_Block.level);
ERS_Block.score = 0;
ERS_Block.scoreField.setText(""+ERS_Block.score);
}
scr.requestFocus();
break;
case button_leveldown:if(ERS_Block.level 1){
ERS_Block.level--;
ERS_Block.levelField.setText(""+ERS_Block.level);
ERS_Block.score = 0;
ERS_Block.scoreField.setText(""+ERS_Block.score);
}
scr.requestFocus();
break;
case button_pause:if(pause_resume){
ERS_Block.timer.suspend();
pause_resume = false;
}else{
ERS_Block.timer.resume();
pause_resume = true;
}
scr.requestFocus();
break;
case button_quit:System.exit(0);
}
}
}
//方块类
class Block {
static int[][] pattern = {
{0x0f00,0x4444,0x0f00,0x4444},//用十六进至表示,本行表示长条四种状态
{0x04e0,0x0464,0x00e4,0x04c4},
{0x4620,0x6c00,0x4620,0x6c00},
{0x2640,0xc600,0x2640,0xc600},
{0x6220,0x1700,0x2230,0x0740},
{0x6440,0x0e20,0x44c0,0x8e00},
{0x0660,0x0660,0x0660,0x0660}
};
int blockType; //块的模式号(0-6)
int turnState; //块的翻转状态(0-3)
int blockState; //快的下落状态
int row,col; //块在画布上的坐标
GameCanvas scr;
//块类的构造方法
Block(GameCanvas scr){
this.scr = scr;
blockType = (int)(Math.random() * 1000)%7;
turnState = (int)(Math.random() * 1000)%4;
blockState = 1;
row = scr.getInitRow();
col = scr.getInitCol();
}
//重新初始化块,并显示新块
public void reset(){
blockType = (int)(Math.random() * 1000)%7;
turnState = (int)(Math.random() * 1000)%4;
blockState = 1;
row = scr.getInitRow();
col = scr.getInitCol();
dispBlock(1);
}
//实现“块”翻转的方法
public void leftTurn(){
if(assertValid(blockType,(turnState + 1)%4,row,col)){
dispBlock(0);
turnState = (turnState + 1)%4;
dispBlock(1);
}
}
//实现“块”的左移的方法
public void leftMove(){
if(assertValid(blockType,turnState,row,col-1)){
dispBlock(0);
col--;
dispBlock(1);
}
}
//实现块的右移
public void rightMove(){
if(assertValid(blockType,turnState,row,col+1)){
dispBlock(0);
col++;
dispBlock(1);
}
}
//实现块落下的操作的方法
public boolean fallDown(){
if(blockState == 2)
return(false);
if(assertValid(blockType,turnState,row-1,col)){
dispBlock(0);
row--;
dispBlock(1);
return(true);
}else{
blockState = 2;
dispBlock(2);
return(false);
}
}
//判断是否正确的方法
boolean assertValid(int t,int s,int row,int col){
int k = 0x8000;
for(int i = 0; i 4; i++){
for(int j = 0; j 4; j++){
if((int)(pattern[t][s]k) != 0){
int temp = scr.getScrArrXY(row-i,col+j);
if (temp0||temp==2)
return false;
}
k = k 1;
}
}
return true;
}
//同步显示的方法
public synchronized void dispBlock(int s){
int k = 0x8000;
for (int i = 0; i 4; i++){
for(int j = 0; j 4; j++){
if(((int)pattern[blockType][turnState]k) != 0){
scr.drawUnit(row-i,col+j,s);
}
k=k1;
}
}
}
}
//定时线程
class MyTimer extends Thread{
GameCanvas scr;
public MyTimer(GameCanvas scr){
this.scr = scr;
}
public void run(){
while(true){
try{
sleep((10-ERS_Block.level + 1)*100);
}
catch(InterruptedException e){}
if(!scr.getBlock().fallDown()){
scr.deleteFullLine();
if(scr.isGameEnd()){
ERS_Block.isPlay = false;
suspend();
}else
scr.getBlock().reset();
}
}
}
class WinListener extends WindowAdapter{
public void windowClosing (WindowEvent l){
System.exit(0);
}
}
表1. CheckerDrag.java
// CheckerDrag.javaimport java.awt.*;import java.awt.event.*;public class CheckerDrag extends java.applet.Applet{ // Dimension of checkerboard square. // 棋盘上每个小方格的尺寸 final static int SQUAREDIM = 40; // Dimension of checkerboard -- includes black outline. // 棋盘的尺寸 – 包括黑色的轮廓线 final static int BOARDDIM = 8 * SQUAREDIM + 2; // Dimension of checker -- 3/4 the dimension of a square. // 棋子的尺寸 – 方格尺寸的3/4 final static int CHECKERDIM = 3 * SQUAREDIM / 4; // Square colors are dark green or white. // 方格的颜色为深绿色或者白色 final static Color darkGreen = new Color (0, 128, 0); // Dragging flag -- set to true when user presses mouse button over checker // and cleared to false when user releases mouse button. // 拖动标记 --当用户在棋子上按下鼠标按键时设为true, // 释放鼠标按键时设为false boolean inDrag = false; // Left coordinate of checkerboard's upper-left corner. // 棋盘左上角的左方向坐标 int boardx; // Top coordinate of checkerboard's upper-left corner. //棋盘左上角的上方向坐标 int boardy; // Left coordinate of checker rectangle origin (upper-left corner). // 棋子矩形原点(左上角)的左方向坐标 int ox; // Top coordinate of checker rectangle origin (upper-left corner). // 棋子矩形原点(左上角)的上方向坐标 int oy; // Left displacement between mouse coordinates at time of press and checker // rectangle origin. // 在按键时的鼠标坐标与棋子矩形原点之间的左方向位移 int relx; // Top displacement between mouse coordinates at time of press and checker // rectangle origin. // 在按键时的鼠标坐标与棋子矩形原点之间的上方向位移 int rely; // Width of applet drawing area. // applet绘图区域的宽度 int width; // Height of applet drawing area. // applet绘图区域的高度 int height; // Image buffer. // 图像缓冲 Image imBuffer; // Graphics context associated with image buffer. // 图像缓冲相关联的图形背景 Graphics imG; public void init () { // Obtain the size of the applet's drawing area. // 获取applet绘图区域的尺寸 width = getSize ().width; height = getSize ().height; // Create image buffer. // 创建图像缓冲 imBuffer = createImage (width, height); // Retrieve graphics context associated with image buffer. // 取出图像缓冲相关联的图形背景 imG = imBuffer.getGraphics (); // Initialize checkerboard's origin, so that board is centered. // 初始化棋盘的原点,使棋盘在屏幕上居中 boardx = (width - BOARDDIM) / 2 + 1; boardy = (height - BOARDDIM) / 2 + 1; // Initialize checker's rectangle's starting origin so that checker is // centered in the square located in the top row and second column from // the left. // 初始化棋子矩形的起始原点,使得棋子在第一行左数第二列的方格里居中 ox = boardx + SQUAREDIM + (SQUAREDIM - CHECKERDIM) / 2 + 1; oy = boardy + (SQUAREDIM - CHECKERDIM) / 2 + 1; // Attach a mouse listener to the applet. That listener listens for // mouse-button press and mouse-button release events. // 向applet添加一个用来监听鼠标按键的按下和释放事件的鼠标监听器 addMouseListener (new MouseAdapter () { public void mousePressed (MouseEvent e) { // Obtain mouse coordinates at time of press. // 获取按键时的鼠标坐标 int x = e.getX (); int y = e.getY (); // If mouse is over draggable checker at time // of press (i.e., contains (x, y) returns // true), save distance between current mouse // coordinates and draggable checker origin // (which will always be positive) and set drag // flag to true (to indicate drag in progress). // 在按键时如果鼠标位于可拖动的棋子上方 // (也就是contains (x, y)返回true),则保存当前 // 鼠标坐标与棋子的原点之间的距离(始终为正值)并且 // 将拖动标志设为true(用来表明正处在拖动过程中) if (contains (x, y)) { relx = x - ox; rely = y - oy; inDrag = true; } } boolean contains (int x, int y) { // Calculate center of draggable checker. // 计算棋子的中心位置 int cox = ox + CHECKERDIM / 2; int coy = oy + CHECKERDIM / 2; // Return true if (x, y) locates with bounds // of draggable checker. CHECKERDIM / 2 is the // radius. // 如果(x, y)仍处于棋子范围内则返回true // CHECKERDIM / 2为半径 return (cox - x) * (cox - x) + (coy - y) * (coy - y) CHECKERDIM / 2 * CHECKERDIM / 2; } public void mouseReleased (MouseEvent e) { // When mouse is released, clear inDrag (to // indicate no drag in progress) if inDrag is // already set. // 当鼠标按键被释放时,如果inDrag已经为true, // 则将其置为false(用来表明不在拖动过程中) if (inDrag) inDrag = false; } }); // Attach a mouse motion listener to the applet. That listener listens // for mouse drag events. //向applet添加一个用来监听鼠标拖动事件的鼠标运动监听器 addMouseMotionListener (new MouseMotionAdapter () { public void mouseDragged (MouseEvent e) { if (inDrag) { // Calculate draggable checker's new // origin (the upper-left corner of // the checker rectangle). // 计算棋子新的原点(棋子矩形的左上角) int tmpox = e.getX () - relx; int tmpoy = e.getY () - rely; // If the checker is not being moved // (at least partly) off board, // assign the previously calculated // origin (tmpox, tmpoy) as the // permanent origin (ox, oy), and // redraw the display area (with the // draggable checker at the new // coordinates). // 如果棋子(至少是棋子的一部分)没有被 // 移出棋盘,则将之前计算的原点 // (tmpox, tmpoy)赋值给永久性的原点(ox, oy), // 并且刷新显示区域(此时的棋子已经位于新坐标上) if (tmpox boardx tmpoy boardy tmpox + CHECKERDIM boardx + BOARDDIM tmpoy + CHECKERDIM boardy + BOARDDIM) { ox = tmpox; oy = tmpoy; repaint (); } } } }); } public void paint (Graphics g) { // Paint the checkerboard over which the checker will be dragged. // 在棋子将要被拖动的位置上绘制棋盘 paintCheckerBoard (imG, boardx, boardy); // Paint the checker that will be dragged. // 绘制即将被拖动的棋子 paintChecker (imG, ox, oy); // Draw contents of image buffer. // 绘制图像缓冲的内容 g.drawImage (imBuffer, 0, 0, this); } void paintChecker (Graphics g, int x, int y) { // Set checker shadow color. // 设置棋子阴影的颜色 g.setColor (Color.black); // Paint checker shadow. // 绘制棋子的阴影 g.fillOval (x, y, CHECKERDIM, CHECKERDIM); // Set checker color. // 设置棋子颜色 g.setColor (Color.red); // Paint checker. // 绘制棋子 g.fillOval (x, y, CHECKERDIM - CHECKERDIM / 13, CHECKERDIM - CHECKERDIM / 13); } void paintCheckerBoard (Graphics g, int x, int y) { // Paint checkerboard outline. // 绘制棋盘轮廓线 g.setColor (Color.black); g.drawRect (x, y, 8 * SQUAREDIM + 1, 8 * SQUAREDIM + 1); // Paint checkerboard. // 绘制棋盘 for (int row = 0; row 8; row++) { g.setColor (((row 1) != 0) ? darkGreen : Color.white); for (int col = 0; col 8; col++) { g.fillRect (x + 1 + col * SQUAREDIM, y + 1 + row * SQUAREDIM, SQUAREDIM, SQUAREDIM); g.setColor ((g.getColor () == darkGreen) ? Color.white : darkGreen); } } } // The AWT invokes the update() method in response to the repaint() method // calls that are made as a checker is dragged. The default implementation // of this method, which is inherited from the Container class, clears the // applet's drawing area to the background color prior to calling paint(). // This clearing followed by drawing causes flicker. CheckerDrag overrides // update() to prevent the background from being cleared, which eliminates // the flicker. // AWT调用了update()方法来响应拖动棋子时所调用的repaint()方法。该方法从 // Container类继承的默认实现会在调用paint()之前,将applet的绘图区域清除 // 为背景色,这种绘制之后的清除就导致了闪烁。CheckerDrag重写了update()来 // 防止背景被清除,从而消除了闪烁。 public void update (Graphics g) { paint (g); }}
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.*;
import java.util.*;
class Car{
Image img;
int x, y;
Dimension dim;
Car(Image img){
this.img=img;
}
Car(Image img, int x, int y){
this.img=img; this.x=x; this.y=y;
}
Car(Image img, int x, int y, Dimension dim){
this(img, x, y);
this.dim=dim;
}
void draw(Graphics g, ImageObserver observer){
g.drawImage(img, x, y, observer);
}
int getX(){ return x;}
int getY(){ return y;}
void setX(int x){this.x=x;}
void setY(int y){this.y=y;}
void setLocation(int x, int y){
this.x=x; this.y=y;
}
int getWidth(){ return img.getWidth(null);}
int getHeight(){ return img.getHeight(null);}
Rectangle2D getRectangle(){
return new Rectangle2D.Float(x, y, getWidth(), getHeight());
}
void move(int dx, int dy){
x+=dx;
y+=dy;
if(dim!=null){
if(x0)x=0;
if(x+getWidth()dim.getWidth())
x=(int)dim.getWidth()-getWidth();
}
}
boolean intersects(Car car){
return getRectangle().intersects(car.getRectangle());
}
boolean intersects(int x, int y){
return getRectangle().intersects(x, y, getWidth(), getHeight());
}
}
public class CarRace extends Applet implements KeyListener, Runnable{
Image buff;
Canvas screen;
Graphics2D gs, gb;
Car redCar;
Car[] enemy=new Car[20];
Button bStart;
Thread game;
boolean loop=true;
Dimension dim=new Dimension(200, 300);
int road;
Random rnd=new Random();
public void init(){
prepareResource();
setBackground(Color.blue);
initScreen();
add(screen);
bStart=new Button("霸烙 矫累");
add(bStart);
bStart.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
screen.requestFocus();
if(!game.isAlive())
game.start();
}
});
}
void prepareResource(){
Image imgRed=getImage(getCodeBase(),"images/red_car.gif");
Image imgBlue=getImage(getCodeBase(),"images/blue_car.gif");
Image imgGreen=getImage(getCodeBase(),"images/green_car.gif");
MediaTracker mt=new MediaTracker(this);
try{
mt.addImage(imgRed, 0);
mt.addImage(imgBlue, 1);
mt.addImage(imgGreen, 2);
mt.waitForAll();
}catch(Exception e){}
buff=createImage((int)dim.getWidth(), (int)dim.getHeight());
gb=(Graphics2D)buff.getGraphics();
redCar=new Car(imgRed, 80,250, dim);
for(int i=0;i10;i++){
enemy[i]=new Car(imgBlue, 0, 0);
}
for(int i=10;ienemy.length;i++){
enemy[i]=new Car(imgGreen, 0, 0);
}
for(int i=0;ienemy.length;i++){
setEnemy(i);
}
game=new Thread(this);
}
public void stop(){
loop=false;
}
public void run(){
while(loop){
drawScreen();
try{ Thread.sleep(50);}catch(Exception e){}
}
}
void initScreen(){
screen=new Canvas(){
public void paint(Graphics g){
if(gs==null){
gs=(Graphics2D)screen.getGraphics();
}
drawScreen();
}
};
screen.setSize(dim);
screen.addKeyListener(this);
}
void setEnemy(int en){
int x, y;
next:while(true){
x=rnd.nextInt((int)dim.getWidth()-enemy[en].getWidth());
y=-rnd.nextInt(5000)-200;
for(int j=0;jenemy.length;j++){
if(j!=en enemy[j].intersects(x, y))continue next;
}
enemy[en].setLocation(x, y);
break;
}
}
void check(Car en){
if(redCar.intersects(en)){
if(redCar.getX()en.getX()){
en.move(-20, 0);
redCar.move(20, 0);
}
else{
en.move(20,0);
redCar.move(-20, 0);
}
}
}
synchronized void drawScreen(){
gb.clearRect(0, 0, (int)dim.getWidth(), (int)dim.getHeight());
gb.setPaint(new Color(100, 100, 100));
gb.fillRect(0, 0, (int)dim.getWidth(), (int)dim.getHeight());
drawRoad();
for(int i=0;ienemy.length;i++){
enemy[i].move(0, 15);
enemy[i].draw(gb, screen);
if(enemy[i].getY()dim.getHeight())
setEnemy(i);
check(enemy[i]);
}
redCar.draw(gb, screen);
gs.drawImage(buff, 0,0, screen);
}
void drawRoad(){
road+=80;
gb.setPaint(Color.yellow);
gb.fillRect((int)dim.getWidth()/2, road,10,150);
if(road=dim.getHeight())road=-150;
}
public void keyPressed(KeyEvent ke){
if(ke.getKeyCode()==KeyEvent.VK_LEFT){
redCar.move(-10,0);
}
else if(ke.getKeyCode()==KeyEvent.VK_RIGHT){
redCar.move(10,0);
}
}
public void keyReleased(KeyEvent ke){}
public void keyTyped(KeyEvent ke){}
}
这个是一个典型的Applet,文件名应该是CarRace.java,需要图片作为车子等等,本人也是别人给的,但是还要个.html文件来运行它,代码为:
Applet code="CarRace.class" width=250 height=350
/Applet
请楼主采纳
(1) 编辑Applet 的java源文件 创建文件夹C:\ghq,在该文件夹下建立 HelloWorld.java 文件的源代码如下: import java.awt.*; import java.applet.*; public class HelloWorld extends Applet //继承Applet类,这是Applet Java程序的特点 { public void paint(Graphics g ) { g.drawString("Hello World!",5,35); } } 保存上述程序在C:\ghq\HelloWorld.java文件里。 (2)编译Applet 编译HelloWorld.java源文件可使用如下JDK命令: C:\ghq\javac HelloWorld.javaEnter 注意:如果编写的源程序违反了Java编程语言的语法规则,Java编译器将在屏幕上显示语法错误提示信息。源文件中必须不含任何语法错误,Java编译器才能成功地把源程序转换为appletviewer和浏览器能够执行的字节码程序。 成功地编译Java applet之后生成响应的字节码文件HelloWorld.class的文件。用资源管理器或DIR命令列出目录列表,将会发现目录C:\ghq中多了一个名为HelloWorld.class的文件。 (3)创建HTML文件 在运行创建的HelloWorld.class 之前,还需创建一个HTML文件,appletviewer或浏览器将通过该文件访问创建的Applet。为运行HelloWorld.class, 需要创建包含如下HTML语句的名为HelloWorld.html的文件。 HTML TITLEHelloWorld! Applet/TITLE APPLET CODE="HelloWorld.class" //这里应该是HelloWorld.class WIDTH=200 HEIGHT=100 /APPLET /HTML 本例中,APPLET语句指明该Applet字节码类文件名和以像素为单位的窗口的尺寸。虽然这里HTML文件使用的文件名为HelloWorld.HTML,它对应于HelloWorld.java的名字,但这种对应关系不是必须的,可以用其他的任何名字(比如说Ghq.HTML)命名该HTML文件。但是使文件名保持一种对应关系可给文件的管理带来方便。 (4)执行 HelloWorld.html 如果用appletviewer运行HelloWorld.html,需输入如下的命令行: C:\ghq\appletviewer HelloWorld.htmlENTER 可以看出,该命令启动了appletviewer并指明了HTML文件,该HTML文件中包含对应于HelloWorld 的APPLET语句。 如果用浏览器运行HelloWorld Applet,需在浏览器的地址栏中输入HTML文件URL地址。