JAVA客户端 - 服务器游戏

时间:2013-05-01 11:44:26

标签: java swing client-server

我必须准备一款受此game启发的游戏。当然它应该很简单,但不幸的是它必须使用客户端 - 服务器通信才能让两个玩家一起玩。到目前为止,我准备了纹理,我试图让其中一辆汽车移动。可悲的是,它并不像看起来那么简单。我卡住了,我不能继续......我只想使用四个箭头:UP - 车速加速,DOWN - 车速减慢,左转 - 左转,右转 - 右转。当然如果我们不按下UP按钮或DOWN按钮,汽车应该减速,但更轻微。我求求你的提示!

这是我的代码:

package destructionderby;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

class CRX extends JFrame implements KeyListener
{
   File imageFile2;
   BufferedImage crxModel;
   public int speed;
   int posX, posY;
   JPanel crxPanel;
   public CRX()
    {
        speed = 0;
        posX=562;
        posY = 420;
        crxPanel = new JPanel();
        imageFile2 = new File("crx.png");
        try
        {
            crxModel = ImageIO.read(imageFile2);
        }
        catch (IOException e) 
        {
            System.err.println("File access error");
        }
        addKeyListener(this);
    }
    public void paint(Graphics g) 
    {
        while (true)
        {
            Graphics2D g2d = (Graphics2D) g;
            g2d.drawImage(crxModel, posX+speed, posY, null);
            repaint();
        }
    }

    //-------------------KEY LISTENER--------------------
    public void keyTyped (KeyEvent key)
    {
            if (key.getKeyCode()==38) //38 == UP; 40==DOWN; 37==LEFT; 39==RIGHT
            {
                speed +=10;
            }
            if (key.getKeyCode()==40)
            {
                if (speed >10)
                {
                    speed-=10;
                }
                else speed=0;
            }
    }
    @Override
    public void keyPressed(KeyEvent key)
    {

    }
    @Override
    public void keyReleased(KeyEvent key)
    {

    }
}

class MainWindow extends JFrame
{
    JPanel mainWindow;
    BufferedImage backgroundImage;
    CRX crx;
    MainWindow()
    {
        super("Destruction Derby");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(800,600);
        setResizable(false);
        setVisible(true);
        init();
    }
    void init()
    {
        mainWindow = new JPanel();
        File imageFile= new File("background.png");        
        //:::...ZAŁADOWANIE OBRAZKA TŁA:::...
        try 
        {
            backgroundImage = ImageIO.read(imageFile);
        } 
        catch (IOException e) 
        {
            System.err.println("File access error");
        }
        crx = new CRX();
        paint(getGraphics());
     }

    @Override
    public void paint(Graphics g) 
    {
        Graphics2D g2d = (Graphics2D) g;
        g2d.drawImage(backgroundImage, 0, 0, this);
        crx.paint(getGraphics());
    }
}

public class DestructionDerby 
{    
    public static void main(String[] args) 
    {
        new MainWindow();
    }
}

还有我的NetBeans项目:http://www2.zippyshare.com/v/30402578/file.html

1 个答案:

答案 0 :(得分:3)

  1. JFrame默认情况下永远不会对KeyEvent做出反应,放在那里JPanel

  2. 不要直接对JFrame绘制(),而是使用JPanel

  3. 覆盖JPanel中的paintComponent,将super.paintComponent()添加为第一个代码行(对于paint()相同)

  4. 使用KeyBindings(这里有关于这些键的例子)而不是KeyListener

  5. 为什么有两个JFrame的原因,不要扩展JFrame,创建局部变量

  6. 将图片加载到本地变量