java彈球
❶ 急求一個java的躲避彈球小游戲的代碼
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.Timer;
public class PinBall
{
private final int TABLE_WIDTH = 300;//桌面寬度
private final int TABLE_HEIGHT = 400;//桌面高度
private final int RACKET_Y = 340;//球拍的垂直位置
private final int RACKET_HEIGHT = 20;//球拍高度
private final int RACKET_WIDTH = 60;//球拍寬度
private final int BALL_SIZE = 16;//球的大小
private Frame f = new Frame("彈球游戲");//實例化一個窗口
Random rand = new Random();//實例化一個隨機數生成器
private int ySpeed = 10;//小球的縱向運動數度、
private double xyRate = rand.nextDouble() - 0.5;//返回一個-0.5到0.5之間的比率用控制小球運動方向
private int xSpeed = (int)(ySpeed*xyRate*2);//這個橫向速度在-10到10之間，產生左右擺動運動效果
private int ballX = rand.nextInt(200)+20;//小球開始的橫坐標位置，200表示產生0到100之間的隨機數
private int ballY = rand.nextInt(10)+20;//小球開始的縱坐標位置
private int racketX = rand.nextInt(200);//球拍開始時的橫坐標位置
private MyCanvas tableArea = new MyCanvas();//實力化一個畫布工具，集成Canvas類
private String shape = "";//保存需要繪制圖形的字元串屬性
Timer timer;//聲明一個時間變數
private boolean isLose = false;//表示游戲是否結束
public void init()
{
tableArea.setPreferredSize(new Dimension(TABLE_WIDTH,TABLE_HEIGHT));//定義畫布大小
f.add(tableArea);//添加畫布到窗口
KeyAdapter keyProcessor = new KeyAdapter()//實例化一個鍵盤監聽事件適配器
{
public void keyPressed(KeyEvent ke)//重寫適配器裡面的按下某鍵盤方法
{
if(ke.getKeyCode()==KeyEvent.VK_LEFT)//按下鍵盤左鍵時
{
if(racketX > 0)//球拍左邊框不能出畫布的左邊框
racketX -=10;//按一左鍵次向左移動10個像素
}
if(ke.getKeyCode()==KeyEvent.VK_RIGHT)//按下鍵盤右鍵時
{
if(racketX < TABLE_WIDTH - RACKET_WIDTH)//球拍右邊框不能出畫布的右邊框
racketX +=10;//按一次右鍵移動向右移動10個像素
}
}
};
f.addKeyListener(keyProcessor);//給窗口添加鍵盤監聽器
tableArea.addKeyListener(keyProcessor);//給畫布添加鍵盤監聽器
ActionListener taskPerformer = new ActionListener()//這里是實例化了一個監聽介面，這個介面裡面只有一個方法
{
public void actionPerformed(ActionEvent evt)//重寫這個介面裡面的方法，判斷小球的位置
{
if(ballX<=0 || ballX>=TABLE_WIDTH-BALL_SIZE)//保證小球橫向上在畫布之內運動
{
xSpeed = -xSpeed;//觸發反方向運動
}
if(ballY>=RACKET_Y-BALL_SIZE&&(ballX<racketX||ballX>racketX+RACKET_WIDTH))//出了球拍的可擊打范圍
{
timer.stop();//停止對監聽器的觸發
isLose=true;//將標志isLose變數置為true
tableArea.repaint();//調用畫布的重繪方法
}
else if(ballY<=0||(ballY>=RACKET_Y-BALL_SIZE&&ballY>racketX&&ballX<=racketX+RACKET_WIDTH))//小球在球拍之內，而其到達球拍的高度
{
ySpeed=-ySpeed;//上下方向改變，小球反彈
}
ballY+=ySpeed;//小球的坐標在縱向上增加
ballX+=xSpeed;//小球的坐標在橫向上的增加
tableArea.repaint();//調用畫布的重繪方法3
}
};
timer = new Timer(100,taskPerformer);//每隔0.1秒運行一次監聽器
timer.start();//計時器開始運行
f.addWindowListener(new MyListener());//關閉窗口事件
f.pack();//設置窗口最佳大小
f.setVisible(true);//顯示窗口
}
class MyListener extends WindowAdapter//關閉窗口的類
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
public static void main(String[] args)//程序入口
{
new PinBall().init();//調用PinBall類裡面的init()方法
}
class MyCanvas extends Canvas//建一個集成Canvas類的類
{
public void paint(Graphics g)//重寫父類的繪圖方法
{
if(isLose)//如果isLose為真，則在畫布里列印「游戲已結束」
{
g.setColor(new Color(255,0,0));//當前顏色
g.setFont(new Font("黑體",Font.BOLD,30));//字體名稱，樣式，大小
g.drawString("游戲已結束！",50,200);//按坐標繪制文字圖形
}
else//負責
{
g.setColor(new Color(240,240,80));//當前顏色
g.fillOval(ballX,ballY,BALL_SIZE,BALL_SIZE);//填充顏色，根據坐標和長寬填充圓形
g.setColor(new Color(80,80,200));//當前顏色
g.fillRect(racketX,RACKET_Y,RACKET_WIDTH,RACKET_HEIGHT);//填充顏色，根據坐標和長寬填充矩形
}
}
}
}
❷ JAVA如何實現小球的彈性碰撞
我沒用java寫過代碼，所以我只說演算法，代碼你自己翻譯下
按C的語法來：
void xiaoqiu
{
int UB=10,DB=200,LB=10,RB=200; //定義彈球范圍的邊界
int sh=1; //定義橫向步長
int sz=1; //定義縱向步長（兩步長之比決定了反彈的角度）
int x=LB,y=UB; //定義坐標
int i=10000; //循環次數（自己選擇跳出手段）
while(i>0)
{
i--;
x=x+sh;
if(x>=RB||x<=LB) sh=-sh; //碰壁後步長變反
y=y+sz;
if(y>=DB||y<=UB) sz=-sz; //碰壁後步長變反
(顯示代碼)
}
return;
}
總得來說，就是相當於橫向和縱向分別處理移動、反彈的問題，碰壁後步長變為相反數
不懂請追問
❸ eclupse多線程,發射彈球遇邊界彈回java編程
一，設置一個二維數組，數組的每一行代表一個球
二，小球移動的速度設置一個衰減因子，這樣一定次數後會停止
三，小球的碰撞，小球速度改變
❹ java彈球游戲
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) {
new 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("你輸了!!!", 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);
}
}
❺ Java程序解惑，希望大家幫幫忙，打磚塊游戲不能用鍵盤控制。開始和移動都不能。運行是用application嗎
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 = "彈球游戲";
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 = "請按下'S'鍵開始游戲";
goff.drawString(s, (d.width - fmSmall.stringWidth(s)) / 2, (d.height
- scoreH - bWidth) / 2 + 30);
goff.setColor(new Color(255, 160, 64));
s = "使用方向鍵控制球拍移動";
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("彈球游戲");
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);
}
}
給你+了個keyListener 然後按你的理念給你加入了按鍵判定。按S按鍵可以開始游戲但方向鍵不能移動應該是你的方法錯誤了你自己修改去把懶得看了。。太長了 一般畫可以移動的物體是直接按坐標來畫然後移動的時候+= 好哦這-= 控制坐標 我發現你的錯誤是你用batdpos這個變數去控制移動。。但你根本沒用這個變數去畫圖。。所以不能移動。。你自己去改把。。