我一直在尝试覆盖和使用paint 组件方法而不是paint 方法,因为我已经看到这里的多个问题都建议了它。
我已经查看了很多问题,但我似乎仍然无法让它发挥作用。我正在发布用于渲染屏幕的原始代码。我认为扩展 JFrame 不是正确的方法,相反我需要扩展 JPanel,并从那里使用绘图组件。我有另一个对象,我实际上扩展了 JPanel,并添加了 JFrame(用于渲染)。
这是我用来渲染的对象,顺便说一下,它可以完美地覆盖paint方法。
package render;
import java.util.Arrays;
import javax.swing.*;
import java.awt.*; //Graphics, Graphics2D, Image
import sprites.Picture;
public class Window extends JFrame{
private static final long serialVersionUID = 1L;
public static Picture[] image_list = new Picture[0]; // All the images I want to render
private static String win_title = "Window"; // The name of the window
private static CustomComponents cc = new CustomComponents();
public Window(){
setTitle(win_title); // set my title
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // close when you hit x button
setUndecorated(true); // window has nothing on it
}
// paints all the images in image list according to their priority
public void display(){
add(cc);
CustomComponents.updateImageList(image_list);
pack();
setMinimumSize(getSize());
setLocationRelativeTo(null); // puts the screen in the middle
setResizable(false); // can't resize the window
setVisible(true); // to see the window
}
public double[] getWinSize(){
double[] size = {this.getSize().getWidth(),this.getSize().getWidth()};
return size;
}
public static void endAll(){
for (Picture i:image_list){
i = null;
}
image_list = new Picture[0];
CustomComponents.updateImageList(image_list);
}
// close the window (seen in the game object)
public static void close(){
System.exit(0);
}
// called when adding a new sprite to the image_list array
public static void addPicture(Picture element){
Picture[] result = Arrays.copyOf(image_list, image_list.length +1); // does the same thing as the addObject method in objects
result[image_list.length] = element;
image_list = result;
Arrays.sort(image_list);
CustomComponents.updateImageList(image_list);
}
// updates the screen... Just repaints everything
public void update() {
cc.repaint();
}
}
class CustomComponents extends JComponent {
private static final long serialVersionUID = 1L;
private static Picture[] image_list;
public static void updateImageList(Picture[] image_list){
CustomComponents.image_list = image_list;
}
@Override
public Dimension getMinimumSize() {
return new Dimension(640,360);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(640,360);
}
@Override
public Dimension getMaximumSize() {
return new Dimension(640,360);
}
@Override
public void paintComponent(Graphics graphics) {
super.paintComponent(graphics);
Graphics2D g2d = (Graphics2D) graphics;
for (Picture i:image_list){
if (i.getVisibility()){
g2d.drawImage(i.getPic(), i.getXY()[0], i.getXY()[1], this);
}
}
Toolkit.getDefaultToolkit().sync(); // this is for linux machines
graphics.dispose(); // just good programming practice to collect the garbage
}
}
我会发布实际添加到窗口中的对象,但现在太复杂了,只发生了几件事。在构造函数中,我添加了上面的 JFrame 窗口,然后我使用计时器调用 JFrame 对象的更新方法。
如果你们真的需要代码,我可以发布它,但希望这已经足够了。