我已经开始创建一个简单的Java游戏,目前我已经使用屏幕和基本的Player类创建了游戏窗口。然而,尽管程序没有给我任何错误,但播放器图像不会绘制到屏幕上,所以我不知道从哪里开始调试问题也许有人可以帮我解决?
以下是课程:
import java.awt.*;
import javax.swing.*;
@SuppressWarnings("serial")
public class GameWindow extends JFrame {
public static int windowWidth = 600;
public static int windowHeight = 600;
public static void main(String[] args) {
new GameWindow();
}
public GameWindow() {
this.setSize(windowWidth, windowHeight);
this.setTitle("Berzerk Clone");
this.setVisible(true);
// Defaults the window to be set in the middle of the screen
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GameDrawing drawGame = new GameDrawing();
this.add(drawGame, BorderLayout.CENTER);
}
}
绘图类:
import java.awt.*;
import javax.swing.*;
@SuppressWarnings("serial")
public class GameDrawing extends JComponent {
PlayerHuman p;
public GameDrawing() {
p = new PlayerHuman(300, 300);
}
public void paint(Graphics g) {
super.paint(g);
Graphics2D graphics = (Graphics2D)g;
graphics.setColor(Color.BLACK);
graphics.fillRect(0, 0, GameWindow.windowWidth,GameWindow.windowHeight);
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
graphics.drawImage(p.getPlayerImage(), 300, 300, null);
}
}
玩家类:
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
public class PlayerHuman extends GlobalPosition {
BufferedImage basicPlayer;
public PlayerHuman(int x, int y) {
super(x, y);
try {
basicPlayer = ImageIO.read(new File("Images/Player.png"));
} catch (IOException e) {
e.printStackTrace();
}
}
public void draw(Graphics2D g2d) {
g2d.drawImage(getPlayerImage(), x, y, null);
}
public BufferedImage getPlayerImage() {
return basicPlayer;
}
}
感谢所有帮助。
修改
我的道歉
GlobalPosition Class为玩家提供一个起点:
public class GlobalPosition {
public int x;
public int y;
public GlobalPosition() {
x = y = 0;
}
public GlobalPosition(int _x, int _y) {
x = _x;
y = _y;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public void setX(int newX) {
x = newX;
}
public void setY(int newY) {
y = newY;
}
}
我有一个重新绘制的Game Loop类:
public class GameLoop implements Runnable {
GameWindow gWindow;
public GameLoop(GameWindow newGWindow) {
this.gWindow = newGWindow;
}
@Override
public void run() {
gWindow.repaint();
}
}
答案 0 :(得分:2)
建议:
getClass().getResource("....")
作为网址阅读图片而不是文件。setVisible(true)
,直到 添加所有组件后才能调用paintComponent(Graphics g)
方法,而不是其绘制方法。如,
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.*;
public class ShowImage {
// ******* add the path to the image resource below *****
private static final String IMAGE_RESOURCE_PATH = "";
public static void main(String[] args) {
URL imgUrl = ShowImage.class.getResource(IMAGE_RESOURCE_PATH);
BufferedImage img;
try {
img = ImageIO.read(imgUrl);
if (img == null) {
String message = "Image cannot be found at \""
+ IMAGE_RESOURCE_PATH + "\"";
JOptionPane.showMessageDialog(null, message);
System.exit(-1);
}
Icon icon = new ImageIcon(img);
JOptionPane.showMessageDialog(null, icon);
} catch (IOException e) {
e.printStackTrace();
}
}
}
答案 1 :(得分:0)
原来这是
setVisible(true)
调用导致问题的原因。我把它推到方法中的所有其他调用之下,屏幕和图像出现了。谢谢你的帮助。
修改强>
@Sage这是位置,所以位置正确,但我会开始使用
getClass().getResource(..)
从现在开始的方法。