有一个问题，我在这里使用了这段代码：
我为自己纠正了一点，现在代码如下所示：
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class gamet {
public static void main(String[] args) {
new gamet();
}
public gamet() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedLookAndFeelException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (ClassNotFoundException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new WorldPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class WorldPane extends JPanel {
private static final long serialVersionUID = 1L;
private BufferedImage map;
private BufferedImage party;
private Point viewPort;
private Point partyPoint;
private BufferedImage view;
public WorldPane() {
try {
map = ImageIO.read(new File("C:\\Users\\дНМ\\workspace\\GameK\\image\\Maps.png"));
party = ImageIO.read(new File("C:\\Users\\дНМ\\workspace\\GameK\\image\\Maps.png"));
viewPort = new Point(0, (map.getHeight() / 2) - 100);
partyPoint = new Point(party.getWidth() / 2, (map.getHeight() / 2)); // Virtual Point...
} catch (IOException exp) {
exp.printStackTrace();
}
InputMap im = getInputMap(WHEN_IN_FOCUSED_WINDOW);
ActionMap am = getActionMap();
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0), "goRight");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0), "goLeft");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0), "goUp");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0), "goDown");
am.put("goRight", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
moveParty(10, 0);
}
});
am.put("goLeft", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
moveParty(-10, 0);
}
});
am.put("goUp", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
moveParty(0, -10);
}
});
am.put("goDown", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
moveParty(0, 10);
}
});
}
protected void moveParty(int xDelta, int yDelta) {
partyPoint.x += xDelta;
partyPoint.y += yDelta;
Point view = fromWorld(partyPoint);
if (view.x > getWidth() - (party.getWidth() / 2)) {
viewPort.x += xDelta;
if (viewPort.x + getWidth() > map.getWidth()) {
viewPort.x = map.getWidth() - getWidth();
partyPoint.x = map.getWidth() - (party.getWidth() / 2) - 1;
}
invalidate();
} else if (view.x < party.getWidth() / 2) {
viewPort.x += xDelta;
if (viewPort.x < 0) {
viewPort.x = 0;
partyPoint.x = (party.getWidth() / 2);
}
invalidate();
}
System.out.println(view + "; " + getHeight());
if (view.y > getHeight() - (party.getHeight() / 2)) {
viewPort.y += yDelta;
if (viewPort.y + getHeight() > map.getHeight()) {
viewPort.y = map.getHeight() - getHeight();
partyPoint.y = map.getHeight() - (party.getHeight() / 2) - 1;
}
invalidate();
} else if (view.y < party.getHeight() / 2) {
viewPort.y += yDelta;
if (viewPort.y < 0) {
viewPort.y = 0;
partyPoint.y = (party.getHeight() / 2);
}
invalidate();
}
repaint();
}
@Override
public void invalidate() {
view = null;
super.invalidate();
}
public BufferedImage getView() {
if (view == null && getWidth() > 0 && getHeight() > 0) {
view = map.getSubimage(viewPort.x, viewPort.y, getWidth(), getHeight());
}
return view;
}
@Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
if (map != null) {
g2d.drawImage(getView(), 0, 0, this);
Point real = fromWorld(partyPoint);
int x = real.x - (party.getWidth() / 2);
int y = real.y - (party.getHeight()/ 2);
g2d.drawImage(party, x, y, this);
}
g2d.dispose();
}
protected Point fromWorld(Point wp) {
Point p = new Point();
p.x = wp.x - viewPort.x;
p.y = wp.y - viewPort.y;
return p;
}
}
}
但问题是，当我启动它时，我看到了它：
Exception in thread "AWT-EventQueue-0" java.awt.image.RasterFormatException: (x + width) is outside of Raster
at sun.awt.image.ByteInterleavedRaster.createWritableChild(Unknown Source)
at java.awt.image.BufferedImage.getSubimage(Unknown Source)
at gamet$WorldPane.getView(gamet.java:164)
at gamet$WorldPane.paintComponent(gamet.java:182)
请帮忙解决问题）
我会使用那里的图片，但它们没有衬里（
UPD
缩小了图片的大小，现在我看到了这个错误：
Exception in thread "AWT-EventQueue-0" java.awt.image.RasterFormatException: y lies outside the raster
at sun.awt.image.ByteInterleavedRaster.createWritableChild(Unknown Source)
at java.awt.image.BufferedImage.getSubimage(Unknown Source)
at gamet$WorldPane.getView(gamet.java:164)
at gamet$WorldPane.paintComponent(gamet.java:182)