package clickrpg2;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.*;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.Timer;
public class MainFrame extends javax.swing.JFrame implements ActionListener {
static MainFrame mainFrame = new MainFrame();
static Hero hero = new Hero();
static JLabel fireballButton[] = new JLabel[1000000];
static int fireballTotal = 0;
Timer timer = new Timer(10, this);
public MainFrame() {
addKeyListener(new KeyThing());
addMouseListener(new MouseThing());
initComponents();
}
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/clickrpg2/StickMan1.png"))); // NOI18N
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(1454, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(597, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
public static void main(String args[]) {
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
mainFrame.setVisible(true);
}
});
}
@Override
public void actionPerformed(ActionEvent e) {
int c = 0;
int x = 0;
int y = 0;
int xChar = jLabel1.getX();
int yChar = jLabel1.getY();
while (true) {
x = fireballButton[c].getX();
y = fireballButton[c].getY();
fireballButton[c].setBounds(x + 5, y, 64, 32);
c++;
if (c == fireballTotal) {
break;
}
}
jLabel1.setBounds(xChar,yChar,64,64);
}
class KeyThing extends KeyAdapter {
@Override
public void keyPressed(KeyEvent e) {
int x = jLabel1.getX();
int y = jLabel1.getY();
int speed = hero.getSpeed();
jLabel1.setBounds(x, y, 64, 64);
int keycode = e.getKeyCode();
switch (keycode) {
case KeyEvent.VK_LEFT:
jLabel1.setBounds(x - speed, y, 64, 64);
break;
case KeyEvent.VK_RIGHT:
jLabel1.setBounds(x + speed, y, 64, 64);
break;
case KeyEvent.VK_DOWN:
jLabel1.setBounds(x, y + speed, 64, 64);
break;
case KeyEvent.VK_UP:
jLabel1.setBounds(x, y - speed, 64, 64);
break;
case KeyEvent.VK_SPACE:
x = jLabel1.getX();
y = jLabel1.getY();
fireballButton[fireballTotal] = new JLabel();
fireballButton[fireballTotal].setPreferredSize(new Dimension(x, y));
mainFrame.getContentPane().add(fireballButton[fireballTotal], BorderLayout.CENTER);
ImageIcon label = new ImageIcon("C:\\Users\\Nick\\Documents\\NetBeansProjects\\ClickRPG2\\src\\clickrpg2\\Fireball.png");
fireballButton[fireballTotal].setIcon(label);
mainFrame.setVisible(true);
fireballButton[fireballTotal].setBounds(x, y, 64, 64);
mainFrame.add(fireballButton[fireballTotal]);
fireballTotal++;
timer.start();
if (fireballTotal > 900000) {
fireballTotal = 0;
}
break;
}
}
}
class MouseThing extends MouseAdapter {
@Override
public void mousePressed(MouseEvent e) {
int x = mainFrame.getX();
int y = mainFrame.getY();
fireballButton[fireballTotal] = new JLabel();
ImageIcon label = new ImageIcon("C:\\Users\\Nick\\Documents\\NetBeansProjects\\ClickRPG2\\src\\clickrpg2\\Fireball.png");
fireballButton[fireballTotal].setIcon(label);
fireballButton[fireballTotal].setBounds(x, y, 64, 64);
fireballTotal++;
timer.start();
if (fireballTotal > 900000) {
fireballTotal = 0;
}
}
}
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
// End of variables declaration
}
基本上，我只需要它在我制作火球 jLabel 时不重置 jLabel1。\
有什么建议吗？预先感谢，我是新来的，所以我希望代码块。因为我不知道错误发生在哪里，所以我需要保留大部分代码。抱歉。
最佳答案
好吧，这就是你的问题......
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
您的容器受布局管理器的控制。任何更改任何组件的位置或大小的尝试(通过 setBounds 、 setLocation 和/或 setSize )都将失败，因为布局管理器将放弃这些更改以支持其自己的更改...
当您添加或删除任何组件时，布局管理器会将所有组件更新到它认为应该在的位置。
这行不通，而且是个坏主意。
while (true) {
x = fireballButton[c].getX();
y = fireballButton[c].getY();
fireballButton[c].setBounds(x + 5, y, 64, 32);
c++;
if (c == fireballTotal) {
break;
}
}
任何耗时或阻塞的操作(如循环)都会阻止 EDT 更新图形，基本上意味着您实际上不会看到火球......而且我不敢相信您使用了 Timer有了这个(这将是在正确的方向)并且仍然使用循环......
我的建议...
使用 JLayerPane 反而。这允许您使用绝对定位(尽管如果您确实想要的话，您可以对其应用布局管理器...但它只是 JPanel )
另外，请通读 Concurrency in Swing
使用示例更新
public class TestFireBall {
public static void main(String[] args) {
new TestFireBall();
}
public TestFireBall() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
} catch (UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new FireBallPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class FireBallPane extends JLayeredPane {
private JLabel character;
private List<JLabel> fireBalls;
private ImageIcon icoFireBall;
private Timer timer;
private Timer coolOffTimer;
private int vX = 12;
private boolean coolOff = false;
public FireBallPane() {
fireBalls = new ArrayList<JLabel>(25);
ImageIcon icoCharacter = null;
ImageIcon fireBall = null;
try {
icoCharacter = new ImageIcon(ImageIO.read(getClass().getResource("/BlackMage.png")));
icoFireBall = new ImageIcon(ImageIO.read(getClass().getResource("/FireBall.png")));
} catch (Exception e) {
e.printStackTrace();
}
character = new JLabel(icoCharacter);
add(character);
setFocusable(true);
requestFocusInWindow();
InputMap im = getInputMap(WHEN_IN_FOCUSED_WINDOW);
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0), "fire");
ActionMap am = getActionMap();
am.put("fire", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
if (!coolOff) {
coolOff = true;
JLabel fireBall = createFireBall();
fireBalls.add(fireBall);
if (!timer.isRunning()) {
timer.start();
}
coolOffTimer.restart();
}
}
});
timer = new Timer(125, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (fireBalls.size() > 0) {
JLabel[] balls = fireBalls.toArray(new JLabel[fireBalls.size()]);
for (JLabel fireBall : balls) {
if (fireBall.getParent() == null) {
add(fireBall);
}
Point p = fireBall.getLocation();
p.x += vX;
if (p.x + fireBall.getWidth() >= getWidth()) {
remove(fireBall);
fireBalls.remove(fireBall);
} else {
fireBall.setLocation(p);
}
repaint();
}
} else {
timer.stop();
}
}
});
timer.setRepeats(true);
timer.setCoalesce(true);
coolOffTimer = new Timer(500, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
coolOff = false;
}
});
coolOffTimer.setRepeats(false);
coolOffTimer.setCoalesce(true);
}
protected JLabel createFireBall() {
JLabel fireBall = new JLabel(icoFireBall);
fireBall.setSize(fireBall.getPreferredSize());
int x = character.getX() + character.getWidth();
int y = character.getY() + ((character.getHeight() - fireBall.getHeight()) / 2);
fireBall.setLocation(x, y);
return fireBall;
}
@Override
public void invalidate() {
super.invalidate();
character.setSize(character.getPreferredSize());
int height = getHeight();
int y = (height - character.getHeight()) / 2;
character.setLocation(0, y);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
}
}
关于java - 当我触发火球创建时，它会重置我的角色 JLabel，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13170002/