你好，我是编程新手，我们有一个项目。我们创建了一个带有移动背景的简单赛车游戏，但我被困在我的代码中，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。我求求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);
}
}
}
}
最佳答案
这里是剧透
这是肉
我看到你做错了几件事:
不断创造新形象。只需使用相同的图像即可。
我会不使用标签，而是将 Image/BufferedImage 绘制到绘画表面上。
忘掉两个计时器吧。你可以用一个。这就是您管理状态的方式。
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。在我的示例中，虽然我确实绘制了图像。
不要在
JFrame上绘制并覆盖paint。在JPanel中覆盖paintComponent并将该面板添加到框架。最后是关键成分，使用方法(来自
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，所以你可以在动画过程中移动sx1和sx2，它会移动部分在绘画表面的d点绘制的图像。
如果你不知道如何真正地定制绘画，我建议你跑遍Performing Custom Painting
这是完整的例子
(注意我用作背景的图像是 2000x350)
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();
}
});
}
}
关于java - 在 Swing 中移动背景图像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24677366/