如何解决我该如何在具有两个不同类别的面板上绘画?
我正在用Java开发一个项目,我必须构建一个Leemings游戏的克隆版本,并且在尝试构建这个世界时遇到问题:
我创建了“ fenetre”类(英语窗口),Leemings类和Carreau类(leemings可以行走的平台)
这是问题所在,我在面板上画了一个旅鼠,我还想画一个平台图,在这里,捕鼠者可以在同一面板上行走,但是我不能在同一面板上画图,所以我只能看到平台,但是我再也看不到它们了。
package lemmingsLight;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseListener;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import java.awt.Color;
public class Fenetre extends JComponent {
public Fenetre() {
// Prepare a panel to display the lemmings
JPanel lemmings = new JPanel();
lemmings.setLayout(new BorderLayout());
lemmings.setBounds(0,500,250);
lemmings.setBackground(Color.WHITE);
add(lemmings);
// Add the lemmings to the panel
Lemmings myTestLemming = new Lemmings();
lemmings.add(myTestLemming,BorderLayout.CENTER);
// Add the plateform to the same panel
Carreau pf = new Carreau();
lemmings.add(pf);
MouseAdapter m = new MyMouse(this);
addMouseListener(new MyMouse(this));
JPanel lave = new JPanel(); //fire -> if the leemings fall the leemings die (or burn)
lave.setBounds(0,250,75);
lave.setBackground(Color.RED);
add(lave);
JPanel panCom = new JPanel(); //Control or command
panCom.setBounds(0,320,200);
panCom.setBackground(Color.GRAY);
add(panCom);
JButton b1 = new JButton("pause");
JButton b2 = new JButton("bloquer");
JButton b3 = new JButton("creuser");
JButton b4 = new JButton("tunnel");
JButton b5 = new JButton("bombe");
JButton b6 = new JButton("escalier");
JButton b7 = new JButton("grimper");
JButton b8 = new JButton("parachute");
b1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
//Lemmings.setState(norMAL);
}
});
panCom.add(b1);
panCom.add(b2);
panCom.add(b3);
panCom.add(b4);
panCom.add(b5);
panCom.add(b6);
panCom.add(b7);
panCom.add(b8);
}
}
“ Carreau”类:
package lemmingsLight;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JComponent;
//Pour l'instant class inutile,on va reflechir de ce qu'on peut faire ce Carreau
public class Carreau extends JComponent{
@Override
public void paint(Graphics g) {
super.paint(g);
g.setColor(Color.BLUE);
g.fillRect(55,200,20);
}
}
和班上的旅鼠:
package lemmingsLight;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JComponent;
public class Lemmings extends JComponent {
private Lemmingsstate state;
public Lemmingsstate getState() {
return state;
}
public void setState(Lemmingsstate state) {
this.state = state;
}
@Override
public void paint(Graphics g) {
super.paint(g);
g.setColor(Color.BLACK);
g.fillRect(45,150,20,20);
}
}
如果要查看Main:
package lemmingsLight;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main{
public static void main(String[] args) {
JFrame frame = new JFrame("LemmingsLight");
Fenetre f = new Fenetre();
f.setBackground(Color.WHITE);
frame.setContentPane(f);
frame.setSize(500,410);
//frame.setSize(f.getSize());
//frame.setResizable(false);
frame.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
package lemmingsLight;
public enum Lemmingsstate { //états des Lemmings
norMAL,BOMBEUR,TUNNELIER,BLOQUEUR,GRIMPEUR,CHARPENTIER,FOREUR,ParaCHUTEUR,GLemmingState() {
}
}
感谢您阅读我的问题
解决方法
您需要一个类来扩展JPanel(fenetre)和对象数组/列表(在您的情况下为Lemmings和Carreau列表),这两个对象都应具有void函数,您可以调用该函数并传递图形,以便:
public class Lemmings{
public void draw(Graphics2D g2d)
{
//draw something here
}
}
然后在画图功能中,只需在数组中的每个对象上调用绘制函数
public class Fenetre extends JPanel{
List<Lemmings> lems = new ArrayList<>(); //add the objects into this one
@Override
public void paint(Graphics g)
{
Graphics2D g2d = (Graphics2D)g;
for(int i = 0; i < lems.size(); i++)
{
lems.get(i).draw(g2d);
}
}
}
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。