标签：imageicon keylistener java swing paint
你好我是编程新手,我们有一个项目.我们创建了一个简单的赛车游戏,背景动人,但我坚持我的代码,我不知道该怎么做.游戏开始时我需要一个移动的背景请有人帮助我.我在求T_T
这是我的代码：
public class Game extends JFrame implements KeyListener, ActionListener {
Random s = new Random();
int x = 0, y = 50, a = 0, b = 250, f = 900, a1 = 0, b2 = 350, a2 = 0, b3 = 150;
int Move;
int value;
JLabel spriteLabel1 = new JLabel(new ImageIcon("ss.gif"));
JLabel spriteLabel2 = new JLabel(new ImageIcon("ss.gif"));
JLabel spriteLabel3 = new JLabel(new ImageIcon("ss.gif"));
JLabel spriteLabel4 = new JLabel(new ImageIcon("ss.gif"));
JLabel background = new JLabel(new ImageIcon("geren.png"));
Timer T1 = new Timer(5000, this);
Timer T = new Timer(5, this);
public static void main(String args[]) {
new Game();
}
public Game() {
Container c = getContentPane();
c.setLayout(null);
c.add(spriteLabel1);
c.add(spriteLabel2);
c.add(spriteLabel3);
c.add(spriteLabel4);
c.add(background);
background.setBounds(0, 0, 1024, 768);
addKeyListener(this);
setSize(1000, 750);
setVisible(true);
}
public void paint(Graphics g) {
super.paint(g);
spriteLabel1.setBounds(x, y, 60, 1000);
spriteLabel2.setBounds(a, b, 60, 800);
spriteLabel3.setBounds(a1, b2, 60, 500);
spriteLabel4.setBounds(a2, b3, 60, 650);
}
public void keyPressed(KeyEvent e) {
String k = e.getKeyText(e.getKeyCode());
if (k.equals("D")) {
if (a != f) {
x = x + 15;
spriteLabel1.setIcon(new ImageIcon("ss.gif"));
repaint();
if (x > f) {
x = f;
spriteLabel1.setIcon(new ImageIcon("ss.gif"));
//JOptionPane.showMessageDialog(null,"Congratulations!!
//Sanji wins!","Result",JOptionPane.PLAIN_MESSAGE,
//new ImageIcon("evolve sanji.gif"));
//System.exit(0);
}
repaint();
}
}
T.stop();
}
if(k.equals (
"D"))
{
if (x != f) {
T.start();
Move = 3;
}
}
public void keyReleased(KeyEvent e) {
}
public void keyTyped(KeyEvent e) {
}
public void actionPerformed(ActionEvent e) {
if (Move == 3) {
a = a + (s.nextInt(3));
a = a + value;
if (a > f) {
a = f;
}
spriteLabel2.setIcon(new ImageIcon("ss.gif"));
spriteLabel2.setBounds(a, b, 100, 800);
}
if (a == f) {
if (Move == 3) {
a1 = a1 + (s.nextInt(3));
a1 = a1 + value;
if (a1 > f) {
a1 = f;
}
spriteLabel3.setIcon(new ImageIcon("ss.gif"));
spriteLabel3.setBounds(a1, b2, 100, 500);
}
if (Move == 3) {
a2 = a2 + (s.nextInt(5));
a2 = a2 + value;
if (a2 > f) {
a2 = f;
}
spriteLabel4.setIcon(new ImageIcon("ss.gif"));
spriteLabel4.setBounds(a2, b3, 100, 650);
}
}
}
}
解决方法:
这是扰流板
这是肉
我看到你做错了一些事情：
>不断创建新图像.只需使用相同的图像.
>我会,而不是使用标签,只是在绘画表面上绘制一个Image / BufferedImage.
>忘记两个计时器.你可以用一个到期.这就是你管理国家的方式.
>不要在paint方法中做任何逻辑.在你目前的情况下,因为甚至没有画任何东西,你甚至不需要它.在我的例子中,虽然我画了图像.
>不要在JFrame上绘制并覆盖绘制.改为在JPanel中覆盖paintComponent并将该面板添加到框架中.
>最后,关键成分,使用方法(从Graphics) –
public abstract boolean drawImage(Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
ImageObserver observer)
你可以得到一个更好的解释in this post.基本上,s点是源图像,所以你可以在动画期间移动sx1和sx2,它将移动图像的一部分绘制在d点绘画表面.
如果你不知道如何真正做自定义绘画,我建议你通过Performing Custom Painting
这是完整的例子
(注意我用于背景的图像是2000×350)
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
public class MovingBackgroundDemo {
public MovingBackgroundDemo() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new AnimatingPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private class AnimatingPanel extends JPanel {
private static final int DIM_W = 350;
private static final int DIM_H = 350;
private static final int INCREMENT = 10;
private BufferedImage backgroundImage;
private Image runnerImage;
private int dx1, dy1, dx2, dy2;
private int srcx1, srcy1, srcx2, srcy2;
private int IMAGE_WIDTH;
public AnimatingPanel() {
initImages();
initImagePoints();
Timer timer = new Timer(40, new ActionListener() {
public void actionPerformed(ActionEvent e) {
moveBackground();
repaint();
}
});
timer.start();
FlowLayout layout = (FlowLayout)getLayout();
layout.setHgap(0);
layout.setVgap(0);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.WHITE);
g.fillRect(0, 0, getWidth(), getHeight());
g.drawImage(backgroundImage, dx1, dy1, dx2, dy2, srcx1, srcy1,
srcx2, srcy2, this);
g.drawImage(runnerImage, 0, 0, getWidth(), getHeight(), this);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(350, 350);
}
private void initImagePoints() {
dx1 = 0;
dy1 = 0;
dx2 = DIM_W;
dy2 = DIM_H;
srcx1 = 0;
srcy1 = 0;
srcx2 = DIM_W;
srcy2 = DIM_H;
}
private void initImages() {
try {
runnerImage = new ImageIcon(getClass().getResource("runner.gif")).getImage();
backgroundImage = ImageIO.read(getClass().getResource(
"background.png"));
IMAGE_WIDTH = backgroundImage.getWidth();
System.out.println(IMAGE_WIDTH);
} catch (Exception ex) {
ex.printStackTrace();
}
}
private void moveBackground() {
if (srcx1 > IMAGE_WIDTH) {
srcx1 = 0 - DIM_W;
srcx2 = 0;
} else {
srcx1 += INCREMENT;
srcx2 += INCREMENT;
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new MovingBackgroundDemo();
}
});
}
}
标签：imageicon,keylistener,java,swing,paint 来源： https://codeday.me/bug/20190728/1561951.html
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