Question

我首先从我的代码开始，

    package flappyBird;

    import java.awt.Color;
    import java.awt.Font;
    import java.awt.Graphics;
    import java.awt.Image;
    import java.awt.Rectangle;
    import java.awt.Toolkit;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyEvent;
    import java.awt.event.KeyListener;
    import java.awt.event.MouseEvent;
    import java.awt.event.MouseListener;
    import java.awt.image.BufferedImage;
    import java.awt.image.ImageObserver;
    import java.io.File;
    import java.io.IOException;
    import java.net.URL;
    import java.util.ArrayList;
    import java.util.Random;
    import javax.imageio.ImageIO;
    import javax.swing.ImageIcon;

    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.Timer;

    public class FlappyBird extends JPanel implements ActionListener,    MouseListener, KeyListener
 {


public static FlappyBird flappyBird;

public final int WIDTH = 1600, HEIGHT = 800;

public Renderer renderer;

public Rectangle bird;

public ArrayList<Rectangle> columns;

public int ticks, yMotion, score;

public boolean gameOver, started;

public Random rand;

    Image Flappy = Toolkit.getDefaultToolkit().getImage("src/flappybird/flappy.png");
    Image Icon = Toolkit.getDefaultToolkit().getImage("src/flappybird/Icon.png");
    Image Background = Toolkit.getDefaultToolkit().getImage("src/flappybird/background.jpg");
    Image Log = Toolkit.getDefaultToolkit().getImage("src/flappybird/Log.png");
    Image Grass = Toolkit.getDefaultToolkit().getImage("src/flappybird/Grass.png");


public FlappyBird()
{
    JFrame jframe = new JFrame();
    Timer timer = new Timer(20, this);

    renderer = new Renderer();
    rand = new Random(); 

    jframe.add(renderer);
    jframe.setTitle("Missle Launch");
    jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    jframe.setSize(WIDTH, HEIGHT);
    jframe.addMouseListener(this);
    jframe.addKeyListener(this);
    jframe.setResizable(false);
            jframe.setIconImage(Icon);
    jframe.setVisible(true);

    bird = new Rectangle(WIDTH / 2 - 10, HEIGHT / 2 - 10, 54, 54);
    columns = new ArrayList<Rectangle>();

    addColumn(true);
    addColumn(true);
    addColumn(true);
    addColumn(true);

    timer.start();
}

public void addColumn(boolean start)
{
    int space = 250;
    int width = 100;
    int height = 50 + rand.nextInt(300);

    if (start)
    {
        columns.add(new Rectangle(WIDTH + width + columns.size() * 300, HEIGHT - height - 120, width, height));
        columns.add(new Rectangle(WIDTH + width + (columns.size() - 1) * 300, 0, width, HEIGHT - height - space));
    }
    else
    {
        columns.add(new Rectangle(columns.get(columns.size() - 1).x + 600, HEIGHT - height - 120, width, height));
        columns.add(new Rectangle(columns.get(columns.size() - 1).x, 0, width, HEIGHT - height - space));
    }
}

public void paintColumn(Graphics g, Rectangle column)
{
    g.setColor(Color.orange.darker().darker());
    g.drawImage(Log, column.x, column.y, column.width, column.height, null);
}
public void jump()
{
    if (gameOver)
    {
        bird = new Rectangle(WIDTH / 2 - 10, HEIGHT / 2 - 10, 20, 20);
        columns.clear();
        yMotion = 0;
        score = 0;

        addColumn(true);
        addColumn(true);
        addColumn(true);
        addColumn(true);

        gameOver = false;
    }

    if (!started)
    {
        started = true;
    }
    else if (!gameOver)
    {
        if (yMotion > 0)
        {
            yMotion = 0;
        }

        yMotion -= 10;
    }
}


@Override
public void actionPerformed(ActionEvent e)
{
    int speed = 10;

    ticks++;

    if (started)
    {
        for (int i = 0; i < columns.size(); i++)
        {
            Rectangle column = columns.get(i);

            column.x -= speed;
        }

        if (ticks % 2 == 0 && yMotion < 15)
        {
            yMotion += 1.5 ;
        }

        for (int i = 0; i < columns.size(); i++)
        {
            Rectangle column = columns.get(i);

            if (column.x + column.width < 0)
            {
                columns.remove(column);

                if (column.y == 0)
                {
                    addColumn(false);
                }
            }
        }


        bird.y += yMotion;

        for (Rectangle column : columns)
        {
            if (column.y == 0 && bird.x + bird.width / 4 > column.x + column.width / 2 - 10 && bird.x + bird.width / 2 < column.x + column.width / 2 + 10)
            {
                score++;
            }

            if (column.intersects(bird))
            {
                gameOver = true;

                if (bird.x <= column.x)
                {
                    bird.x = column.x - bird.width;
                }
                else
                {
                    if (column.y != 0)
                    {
                        bird.y = column.y - bird.height;
                    }
                    else if (bird.y < column.height)
                    {
                        bird.y = column.height;
                    }
                }
            }
        }

        if (bird.y > HEIGHT - 120 || bird.y < 0)
        {
            gameOver = true;
        }

        if (bird.y + yMotion >= HEIGHT - 120)
        {
            bird.y = HEIGHT - 120 - bird.height;
            gameOver = true;
        }
    }

    renderer.repaint();
}

public void repaint(Graphics g)
{
    g.drawImage(Background, 0, 0, null);

            g.drawImage(Grass, 0, 680, null);

            g.drawImage(Flappy, bird.x, bird.y, null);


    for (Rectangle column : columns)
    {
        paintColumn(g, column);
    }

    g.setFont(new Font("Arial", 1, 100));

    if (!started)
    {
                g.setColor(Color.GREEN.darker());
        g.drawString("Click to start!", 475, HEIGHT / 2 - 50);
    }

    if (gameOver)
    {
                g.setColor(Color.RED.darker());
        g.drawString("Game Over!", 500, HEIGHT / 2 - 50);
                    g.drawString("Your score was: " + String.valueOf(score), WIDTH /2 -430 , 100);
    }

    if (!gameOver && started)
    {
                g.setColor(Color.ORANGE);
        g.drawString(String.valueOf(score), WIDTH / 2 - 25, 100);
    }
}

    public void getScore() {
        String.valueOf(score);
    }

public static void main(String[] args)
{
    flappyBird = new FlappyBird();
}

@Override
public void mouseClicked(MouseEvent e)
{
    jump();
}

@Override
public void keyReleased(KeyEvent e)
{
    if (((e.getKeyCode() == KeyEvent.VK_SPACE) || e.getKeyCode() == KeyEvent.VK_UP))
    {
        jump();
    }
}

@Override
public void mousePressed(MouseEvent e)
{
}

@Override
public void mouseReleased(MouseEvent e)
{
}

@Override
public void mouseEntered(MouseEvent e)
{
}

@Override
public void mouseExited(MouseEvent e)
{
}

@Override
public void keyTyped(KeyEvent e)
{

}

@Override
public void keyPressed(KeyEvent e)
{

}

}

现在，我有我的src包，然后是我的flappyBird包，其中包含我的主类和我的图像文件，当我在编辑图像之前测试游戏时，但是之后图像消失了，有什么想法吗？

Answer 1

编译并打包到ImageIO.read(InputStream)后，您必须查看有关资源的文件。使用FlappyBird.class.getRousourceAsStream(your/package/name/filename.extension)加载图片。要简单地将您的资源作为流来

虽然您的文件是＆＃34;未完成的＆＃34;您可以将它们作为文件提供给它们，因为它们可以被本机文件系统读取。当他们去jar时，文件系统无法获得那些文件（以简单的方式）。

Answer 2

进一步预览后，这是我发现运行图像的代码行：

        String Background = "background.jpg";
        URL imgURL = FlappyBird.class.getResource(Background);
        Toolkit tk = Toolkit.getDefaultToolkit();
        Image bg = tk.getImage(imgURL);

此代码用于替换：

    Image Background = Toolkit.getDefaultToolkit().getImage("src/flappybird/background.jpg");

我为每个人做了同样的事情我希望这可以帮助其他人看同样的问题。

问题重复：在将其构建到.jar文件中之后，如何将存储在主类的同一包中的图像显示出来。通过paintImages（Graphics，g）

我编译jar，netbeans后，我的src中的图像文件没有加载

2 个答案: