我对这个面板的最终目的是,我有一个img图标,能够在屏幕上移动,当它们落在我的其中一个当前是什么按钮上时,新的面板打开,你会得到一个迷你游戏,即真/假、迷宫或单词查找。
我现在所在的地方...我做了一个基本的空布局,并将按钮作为占位符,玩家图标将转到该位置以打开下一个面板。
我正在做的工作是在屏幕上放置一个简单的矩形,它将使用箭头键盘侦听器来移动。我在网上看了关于创建这个数据库的教程,并搜索了这个数据库。
我当前的代码仍然显示带有地图img背景的空布局和带有img图标的按钮。它不会显示我的矩形。
是的,我是一名学生,这是一个来自学校的项目,我希望你能给我正确的方向,指导我在这里尝试做的三件主要事情。A.让矩形出现在屏幕上并移动它。B.获取矩形上的图像图标。C.我应该从哪里开始研究,当移动的物体击中某个点时,我想不到如何调出我已经做好的新面板。JLable,Jbutton,Janything。
感谢你们所有人能提供的任何帮助。
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class map extends JPanel implements ActionListener, KeyListener{
Timer t = new Timer(5,this);
int x = 0, y = 0, velX = 0, velY = 0;
JButton mapButton, worldCampusB, universityParkB, fayetteB, erieB, yorkB,
hazeltonB;
JLabel background;
ImageIcon img;
public map(){
t.start();
addKeyListener(this);
setFocusable(true);
setFocusTraversalKeysEnabled(false);
setBackground(new Color(9, 49, 98));
setLayout(new BorderLayout());
ImageIcon oldmain = new ImageIcon("images/oldmain.jpg");
ImageIcon hazelton = new ImageIcon("images/hazelton.jpeg");
ImageIcon york = new ImageIcon("images/york.jpg");
ImageIcon erie = new ImageIcon("images/erie.jpg");
ImageIcon fayette = new ImageIcon("images/fayette.jpg");
ImageIcon worldcampus = new ImageIcon("images/worldcampus.png");
background = new JLabel(new ImageIcon("images/pennmap.jpg"));
add (background);
background.setLayout(null);
mapButton = new JButton("Map Menu: Click to return to main menu.");
mapButton.setBounds(new Rectangle(300,20,300,50));
worldCampusB = new JButton("World Campus");
worldCampusB.setIcon(worldcampus);
universityParkB = new JButton("University Park");
universityParkB.setIcon(oldmain);
fayetteB = new JButton("Fayette");
fayetteB.setIcon(fayette);
erieB = new JButton ("Erie");
erieB.setIcon(erie);
yorkB = new JButton ("York");
yorkB.setIcon(york);
hazeltonB = new JButton ("Hazelton");
hazeltonB.setIcon(hazelton);
background.add(mapButton);
background.add(worldCampusB);
background.add(universityParkB);
background.add(fayetteB);
background.add(erieB);
background.add(yorkB);
background.add(hazeltonB);
//adjusted the button locations on the map - jpk5816
worldCampusB.setBounds(new Rectangle (750,20,195,150));
worldCampusB.setHorizontalTextPosition(JButton.CENTER);
worldCampusB.setVerticalTextPosition(JButton.BOTTOM);
universityParkB.setBounds(new Rectangle(380,250,175,140));
universityParkB.setHorizontalTextPosition(JButton.CENTER);
universityParkB.setVerticalTextPosition(JButton.BOTTOM);
fayetteB.setBounds(new Rectangle(40,445,200,150));
fayetteB.setHorizontalTextPosition(JButton.CENTER);
fayetteB.setVerticalTextPosition(JButton.BOTTOM);
erieB.setBounds(new Rectangle(50,100,175,170));
erieB.setHorizontalTextPosition(JButton.CENTER);
erieB.setVerticalTextPosition(JButton.BOTTOM);
yorkB.setBounds(new Rectangle(625,460,185,130));
yorkB.setHorizontalTextPosition(JButton.CENTER);
yorkB.setVerticalTextPosition(JButton.BOTTOM);
hazeltonB.setBounds(new Rectangle(690,190,170,140));
hazeltonB.setHorizontalTextPosition(JButton.CENTER);
hazeltonB.setVerticalTextPosition(JButton.BOTTOM);
}
public void paintCompent(Graphics g){
super.paintComponent(g);
g.setColor(new Color(9, 49, 98));
g.fillRect(x, y, 50, 30);
}
public void actionPerformed(ActionEvent e){
repaint();
x += velX;
y += velY;
}
public void up(){
velY = -1;
velX = 0;
}
public void down(){
velY = 1;
velX = 0;
}
public void left(){
velX = -1;
velY = 0;
}
public void right(){
velX = 1;
velY = 0;
}
public void keyPressed(KeyEvent e){
int code = e.getKeyCode();
if (code == KeyEvent.VK_UP){
up();
}
if (code == KeyEvent.VK_DOWN){
down();
}
if (code == KeyEvent.VK_LEFT){
left();
}
if (code == KeyEvent.VK_RIGHT){
right();
}
}
public void keyTyped(KeyEvent e){}
public void keyReleased(KeyEvent e){}
}
发布于 2018-08-03 04:03:17
找到了一种绘制图像的方法,对于初学者来说,在另一个答案中并不是奇怪的想法。
in myJPanel
public class myJPanel extends JPanel implements ActionListener {
ImageIcon img; //declare
public myJPanel(){
super();
setBackground(Color.white);
setLayout (new BorderLayout());
credits = new credits();
instructions = new instructions();
characterTheme = new characterTheme();
img = new ImageIcon("images/pennmap.jpg");//grab from images foler.
在map.java中,这就是我想要绘制的img。
public class map extends JPanel {
ImageIcon img;
public map (ImageIcon img){
this.img = img;
Dimension size = new Dimension(getWidth(),getHeight());
setPreferredSize(size);
setMinimumSize(size);
setMaximumSize(size);
setSize(size);
setLayout(null);
}
public void paintComponent(Graphics g){
g.drawImage(img.getImage(), 0, 0, null);
}
还有更多的问题,但似乎没有太多的兴趣,所以我将在这里结束它。因为这是我制作这个游戏的迷你项目的第一个障碍。
发布于 2018-07-29 11:57:48
您的JLabel的ImageIcon将被添加到绘图JPanel、this
或地图JPanel (应该重命名为" map "),因此地图中的任何绘图都不会显示。但是为什么要这样做呢?既然已经覆盖了地图的paintComponent,为什么还要使用带有ImageIcon的JLabel作为背景图像呢?一个更好的解决方案是去掉背景地图,在JLabel的paintComponent方法中简单地绘制该图像,然后绘制矩形。
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(backgroundImg, 0, 0, this); // draw image
g.setColor(new Color(9, 49, 98));
g.fillRect(x, y, 50, 30);
}
// rename this to Map so that it complies with Java standards
public class Map extends JPanel implements ActionListener, KeyListener {
private static String IMAGE_PATH = "images/pennmap.jpg";
// ..... other code here
// JLabel background; // **** get rid of this ****
// ImageIcon img;
private BufferedImage backgroundImg;
// constructor needs to be re-named
public Map(){
backgroundImg = ImageIO.read(new File(IMAGE_PATH)); // read in image. Better to use resources though
// .... code here
// background = new JLabel(new ImageIcon("images/pennmap.jpg")); // again get rid of
// add (background); // get rid of
// .... code here
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(backgroundImg, 0, 0, this); // draw image
g.setColor(new Color(9, 49, 98));
g.fillRect(x, y, 50, 30);
}
// .....
}
https://stackoverflow.com/questions/51577012
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