⑴ 自己用java写了个弹弹球，本来是可以运行的，但是在游戏过程中，点了一下窗口之后，键盘监听就失灵了。
怀疑出现了 exception 导致监听失效，建议debug调试下，看看是没有监听到还是监听到了，但是过程出错
⑵ java弹球小程序
在java核心技术卷上有源程序
⑶ eclupse多线程,发射弹球遇边界弹回java编程
一，设置一个二维数组，数组的每一行代表一个球
二，小球移动的速度设置一个衰减因子，这样一定次数后会停止
三，小球的碰撞，小球速度改变
⑷ java能做游戏吗
可以的，可以做Java游戏。
【资料】
主要是用Java分支中的J2ME来写，但是J2ME中需要Java的基回础知识 。
现在有答大部分人，都是从零开始学J2ME的，学习J2ME的时候，总是从Java基础开始学习，而且现在讲Java基础的书籍中都是以J2SE来讲基础，这就给学习造成了一些不必要的麻烦，下面将J2ME中用到的和不需要的Java基础知识做一个简单的说明。
J2ME中使用到的Java基础知识：
1、Java语法基础：包括基本数据类型、关键字、运算符等等
2、面向对象的思想：类和对象的概念，继承和多态等等。
3、异常处理
4、多线程
⑸ Java程序解惑，希望大家帮帮忙，打砖块游戏不能用键盘控制。开始和移动都不能。运行是用application吗
import java.applet.Applet;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Event;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class ballApplet extends Applet implements Runnable {
Dimension d;
Font bFont = new Font("Helvetica", Font.BOLD, 24);
Font sFont = new Font("Helvetica", Font.BOLD, 14);
FontMetrics fmSmall, fmBig;
Graphics goff;
Image img;
Thread mThread;
boolean ingame = false;
int ballx, bally, batpos;
int batdpos = 0;
int balldx = 0, balldy = 0, dxval;
int iScroe, ballNum;
boolean[] showbrick;
int brickNumOfLine;
final int bWidth = 5;
final int batW = 20;
final int ballsize = 5;
final int batH = 5;
final int scoreH = 25;
final int brickW = 15;
final int brickH = 8;
final int space = 1;
final int backcol = 0x102040;
final int line = 4;
final int startline = 32;
public void init() {
Graphics g;
d=size();
setBackground(new Color(backcol));
brickNumOfLine = (d.width-2*bWidth)/(brickW +space);
d.width = brickNumOfLine*(brickW+space)+(2*bWidth);
g = getGraphics();
g.setFont(sFont);
fmSmall= g.getFontMetrics();
g.setFont(bFont);
fmBig = g.getFontMetrics();
showbrick = new boolean[brickNumOfLine*line];
this.addKeyListener(new BallGameKeyListener());
GameInit();
}
public void GameInit() {
batpos = (d.width - batW) / 2;
ballx = (d.width - ballsize) / 2;
bally = (d.height - ballsize - scoreH - 2 * bWidth);
iScroe = 0;
ballNum = 3;
dxval = 2;
if (Math.random() < 0.5)
balldx = dxval;
else
balldx = -dxval;
balldy = -dxval;
batdpos = 0;
InitBricks();
}
public void InitBricks() {
int i;
for (i = 0; i < line * brickNumOfLine; i++)
showbrick[i] = true;
}
// public boolean keyDown(Event e, int key) {
// if (ingame) {
// if (key == Event.LEFT)
// batdpos = -4;
// if (key == Event.RIGHT)
// batdpos = 4;
// if (key == Event.ESCAPE)
// ingame = false;
// } else {
// if (key == 's' || key == 'S') {
// ingame = true;
// GameInit();
// }
// }
// return true;
// }
//
// public boolean keyUp(Event e, int key) {
// if (key == Event.LEFT || key == Event.RIGHT)
// batdpos = 0;
// return true;
// }
public void paint(Graphics g) {
if (goff == null && d.width > 0 && d.height > 0) {
img = createImage(d.width, d.height);
goff = img.getGraphics();
}
if (goff == null || img == null)
return;
goff.setColor(new Color(backcol));
goff.fillRect(0, 0, d.width, d.height);
if (ingame)
PlayGame();
else
ShowIntroScreen();
g.drawImage(img, 0, 0, this);
}
public void PlayGame() {
MoveBall();
CheckBat();
CheckBricks();
DrawPlayField();
DrawBricks();
ShowScore();
}
public void ShowIntroScreen() {
MoveBall();
CheckBat();
CheckBricks();
BatDummyMove();
DrawPlayField();
DrawBricks();
ShowScore();
goff.setFont(bFont);
goff.setColor(new Color(96, 128, 255));
String s = "弹球游戏";
goff.drawString(s, (d.width - fmBig.stringWidth(s)) / 2, (d.height
- scoreH - bWidth) / 2 - 20);
goff.setFont(sFont);
goff.setColor(new Color(128, 255, 32));
s = "请按下'S'键开始游戏";
goff.drawString(s, (d.width - fmSmall.stringWidth(s)) / 2, (d.height
- scoreH - bWidth) / 2 + 30);
goff.setColor(new Color(255, 160, 64));
s = "使用方向键控制球拍移动";
goff.drawString(s, (d.width - fmSmall.stringWidth(s)) / 2, (d.height
- scoreH - bWidth) / 2 + 50);
}
public void DrawBricks() {
int i, j;
boolean nobricks = true;
int colorDelta = 255 / (line - 1);
for (j = 0; j < line; j++) {
for (i = 0; i < brickNumOfLine; i++) {
if (showbrick[j * brickNumOfLine + i]) {
nobricks = false;
goff.setColor(new Color(255, j * colorDelta, 255 - j
* colorDelta));
goff.fillRect(bWidth + i * (brickW + space), startline + j
* (brickH + space), brickW, brickH);
}
}
}
if (nobricks) {
InitBricks();
if (ingame)
iScroe += 100;
}
}
public void DrawPlayField() {
goff.setColor(Color.white);
goff.fillRect(0, 0, d.width, bWidth);
goff.fillRect(0, 0, bWidth, d.height);
goff.fillRect(d.width - bWidth, 0, bWidth, d.height);
goff.fillRect(0, d.height - bWidth, d.width, bWidth);
goff.fillRect(batpos, d.height - 2 * bWidth - scoreH, batW, batH);
goff.fillRect(ballx, bally, ballsize, ballsize);
}
public void ShowScore() {
goff.setFont(sFont);
goff.setColor(Color.white);
goff.drawString("得分:" + iScroe, 40, d.height - 10);
String s = "生命:" + ballNum;
goff
.drawString(s, d.width - 40 - fmSmall.stringWidth(s),
d.height - 10);
}
public void MoveBall() {
ballx += balldx;
bally += balldy;
if (bally <= bWidth) {
balldy = -balldy;
bally = bWidth;
}
if (bally >= (d.height - ballsize - scoreH)) {
if (ingame) {
ballNum--;
if (ballNum <= 0)
ingame = false;
}
ballx = batpos + (batW - ballsize) / 2;
bally = startline + line * (brickH + space);
balldy = dxval;
balldx = 0;
}
if (ballx >= (d.width - bWidth - ballsize)) {
balldx = -balldx;
ballx = d.width - bWidth - ballsize;
}
if (ballx <= bWidth) {
balldx = -balldx;
ballx = bWidth;
}
}
public void BatDummyMove() {
if (ballx < (batpos + 2))
batpos -= 3;
else if (ballx > (batpos + batW - 3))
batpos += 3;
}
public void CheckBat() {
batpos += batpos;
if (batpos < bWidth)
batpos = bWidth;
else if (batpos > (d.width - bWidth - batW))
batpos = (d.width - bWidth - batW);
if (bally >= (d.height - scoreH - 2 * bWidth - ballsize)
&& bally < (d.height - scoreH - 2 * bWidth)
&& (ballx + ballsize) >= batpos && ballx <= (batpos + batW)) {
bally = d.height - scoreH - ballsize - bWidth * 2;
balldy = -dxval;
balldx = CheckBatBounce(balldx, ballx - batpos);
}
}
public int CheckBatBounce(int dy, int delta) {
int sign;
int stepsize, i = -ballsize, j = 0;
stepsize = (ballsize + batW) / 8;
if (dy > 0)
sign = 1;
else
sign = -1;
while (i < batW && delta > i) {
i += stepsize;
j++;
}
switch (j) {
case 0:
case 1:
return -4;
case 2:
return -3;
case 7:
return 3;
case 3:
case 6:
return sign * 2;
case 4:
case 5:
return sign * 1;
default:
return 4;
}
}
public void CheckBricks() {
int i, j, x, y;
int xspeed = balldx;
if (xspeed < 0)
xspeed = -xspeed;
int ydir = balldy;
if (bally < (startline - ballsize)
|| bally > (startline + line * (space + brickH)))
return;
for (j = 0; j < line; j++) {
for (i = 0; i < brickNumOfLine; i++) {
if (showbrick[j * brickNumOfLine + i]) {
y = startline + j * (space + brickH);
x = bWidth + i * (space + brickW);
if (bally >= (y - ballsize) && bally < (y + brickH)
&& ballx >= (x - ballsize) && ballx < (x + brickW)) {
showbrick[j * brickNumOfLine + i] = false;
if (ingame)
iScroe += (line - j);
if (ballx >= (x - ballsize)
&& ballx <= (x - ballsize + 3)) {
balldx = -xspeed;
} else if (ballx <= (x + brickW - 1)
&& ballx >= (x + brickW - 4)) {
balldx = xspeed;
}
balldy = -ydir;
}
}
}
}
}
public void run() {
long starttime;
Graphics g = getGraphics();
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
while (true) {
starttime = System.currentTimeMillis();
try {
paint(g);
starttime += 20;
Thread.sleep(Math
.max(0, starttime - System.currentTimeMillis()));
} catch (InterruptedException e) {
break;
}
}
}
public void start() {
if (mThread == null) {
mThread = new Thread(this);
mThread.start();
}
}
public void stop() {
if (mThread != null) {
mThread.stop();
mThread = null;
}
}
public static void main(String[] args) {
Frame frame = new Frame("弹球游戏");
ballApplet app = new ballApplet();
frame.add("Center", app);
frame.setSize(270, 350);
frame.validate();
frame.setVisible(true);
frame.addWindowListener(new WindowControl(app));
app.init();
app.start();
}
class BallGameKeyListener implements KeyListener{
@Override
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
// TODO Auto-generated method stub
if (ingame) {
switch(key){
case KeyEvent.VK_ESCAPE:
ingame = false;
break;
case KeyEvent.VK_RIGHT:
batdpos = 4;
break;
case KeyEvent.VK_LEFT:
batdpos = -4;
break;
}
} else {
if (key == KeyEvent.VK_S) {
ingame = true;
GameInit();
}
}
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT || key == KeyEvent.VK_RIGHT)
batdpos = 0;
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
}
}
class WindowControl extends WindowAdapter {
Applet app;
public WindowControl(Applet app) {
this.app = app;
}
public void WindowClosing(WindowEvent e) {
app.stop();
app.destroy();
System.exit(0);
}
}
给你+了个keyListener 然后按你的理念给你加入了按键判定。按S按键可以开始游戏但方向键不能移动应该是你的方法错误了你自己修改去把懒得看了。。太长了 一般画可以移动的物体是直接按坐标来画然后移动的时候+= 好哦这-= 控制坐标 我发现你的错误是你用batdpos这个变量去控制移动。。但你根本没用这个变量去画图。。所以不能移动。。你自己去改把。。
⑹ java弹球游戏
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class CopyOfBallCrash implements Runnable {
public static void main(final String[] args) {
Thread(new CopyOfBallCrash()).start();
}
private final int width = 400;
private final int height = 700;
private int mouse_X, mouse_Y;
private final BufferedImage offscreen = new BufferedImage(width, height,
BufferedImage.TYPE_4BYTE_ABGR);
private final JPanel panel = new JPanel();
private final Shape ball = new Shape(100, 100, 1, 1, 20);
private final Shape rect = new Shape(0, 100, 20);
public CopyOfBallCrash() {
final JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel.setPreferredSize(new Dimension(width, height));
ball.setBounds(width, height);
rect.setBounds(width, height);
frame.setContentPane(panel);
panel.addMouseMotionListener(new MouseMotionListener() {
@Override
public void mouseDragged(final MouseEvent e) {}
@Override
public void mouseMoved(final MouseEvent e) {
mouse_X = e.getX();
mouse_Y = e.getY();
}
});
frame.pack();
frame.setVisible(true);
}
public void paint(final Graphics g) {
final Graphics2D g2d = offscreen.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.fillRect(0, 0, width, height);
g2d.setColor(Color.blue);
rect.drawRect(g2d, mouse_X);
g2d.setColor(Color.red);
ball.drawOval(g2d, rect);
if (Shape.isLose) g2d.drawString("你输了!!!", 100, 300);
g2d.dispose();
g.drawImage(offscreen, 0, 0, null);
}
@Override
public void run() {
while (true)
paint(panel.getGraphics());
}
}
class Shape {
public int width, height;
public int x, y, vx, vy, r, w, h;
public static boolean isLose;
public Shape(final int x, final int y, final int vx, final int vy, final int r) {
super();
this.x = x;
this.y = y;
this.vx = vx;
this.vy = vy;
this.r = r;
}
public Shape(final int x, final int w, final int h) {
super();
this.x = x;
this.w = w;
this.h = h;
}
public final void setBounds(final int width, final int height) {
this.width = width;
this.height = height;
}
public final void drawOval(final Graphics2D g2d, final Shape shape) {
if (y + h >= height) {
isLose = true;
return;
}
if (x + vx <= 0 || x + vx + w >= width) vx = -vx;
if (y + vy <= 0) vy = -vy;
if (isCrashOutside(shape.x, shape.y, shape.w, shape.h) && y + w >= shape.y)
vy = -vy;
x += vx;
y += vy;
g2d.fillOval(x, y, r, r);
}
public final void drawRect(final Graphics2D g2d, final int mouseX) {
y = height - h;
if (x + w < width && x < mouseX) x++;
if (x > 0 && x > mouseX) x--;
g2d.fillRect(x, y, w, h);
}
public final boolean isCrashOutside(final int x, final int y, final int w,
final int h) {
return (this.x > x ? this.x <= w + x : x <= r + this.x)
&& (this.y > y ? this.y <= h + y : y <= r + this.y);
}
}