java 游戏编程 (一)

看到最近基于java的游戏文章不少，写一段关于java游戏编程的基本知识。很多内容参考自David Brackeen 个人网址，作为笔记。今日开第一题，日后慢慢更新。有不得当的地方还请多包涵，我会努力改进。
首先说说java游戏编程的基础。 这次总结是基于awt swing java2D这些知识。废话不多说，先来第一部分。
1.全屏图形。
显示的硬件分 显卡和显示器。显卡的内存将存储屏幕上的内容，并且将内存中的内容在显示器上显示。显示器的屏幕用像素表示。一般是800*600/1280*1024之类。
另外还有位深度的概念。比如8，16，24，32位。
8是2的八次方  =216中颜色，以此类推。越小越快。

将显示转换为全屏
Jframe，模拟屏幕或说画布等
DisplayMode，指定显示切换到什么样的分辨率，位深度刷新率。
GraphicsDevice，改变现实方式和检查显示属性靠它。
GraphicsEnvironment，获得GraphicsDevice。
首先来一个屏幕管理类

package com.jsheng.game.util;

import java.awt.DisplayMode;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Window;

import javax.swing.JFrame;

/** function:
 * company: jsheng
 * @author wanghn      [e-mail]
 * describe:
 */
public class MyScreenMgr {
	
	private GraphicsDevice device;
	 
	 public MyScreenMgr() {
	        GraphicsEnvironment environment = GraphicsEnvironment.getLocalGraphicsEnvironment();
	        device = environment.getDefaultScreenDevice();
	    }
	 
	 public void setFullScreen(DisplayMode displayMode,JFrame window){
		        window.setUndecorated(true);
		        window.setResizable(false);

		        device.setFullScreenWindow(window);
		        if (displayMode != null && device.isDisplayChangeSupported())
		        {
		            try {
		                device.setDisplayMode(displayMode);
		            }
		            catch (IllegalArgumentException ex) {
		               //处理
		            }
		        }
		    }
	 
	    public Window getFullScreenWindow() {
	        return device.getFullScreenWindow();
	    }
	    
	    public void reScreen() {
	        Window window = device.getFullScreenWindow();
	        if (window != null) {
	            window.dispose();
	        }
	        device.setFullScreenWindow(null);
	    }
}

接下来是测试

package com.jsheng.game.test1;
import java.awt.*;
import javax.swing.JFrame;

import com.jsheng.game.util.MyScreenMgr;
/** function:
 * company: jsheng
 * @author wanghn      [e-mail]
 */
public class FullScreenTest extends JFrame {

	private static final long serialVersionUID = 1L;


	public static void main(String[] args) {

        DisplayMode displayMode = new DisplayMode(800, 600, 16,
                DisplayMode.REFRESH_RATE_UNKNOWN);
        FullScreenTest test = new FullScreenTest();
        test.run(displayMode);
    }

    public void run(DisplayMode displayMode) {
        setBackground(Color.black);
        setForeground(Color.white);
        setFont(new Font("Dialog", 0, 24));
        MyScreenMgr screen = new MyScreenMgr();
        try {
        	screen.setFullScreen(displayMode, this);
            Thread.sleep(4000);
        }catch (InterruptedException ex) { }
        finally {
            screen.reScreen();
        }
    }


    public void paint(Graphics g) {
    	if(g instanceof Graphics2D){
    		Graphics2D g1 = (Graphics2D) g;
    		g1.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    	}
    	  g.drawString("欢迎访问J盛科技!我的qq6668220", 20, 50);
    }
}

window.setUndecorated(true); 删除边框和标题栏。

g1.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
这两句抗齿边文本，是文本的边缘模糊化，没有齿边。

这样一个全屏幕的demo就出来了。

2.添加图像。

package com.jsheng.game.test1;
import java.awt.*;

import javax.swing.ImageIcon;
import javax.swing.JFrame;

import com.jsheng.game.util.MyScreenMgr;
/** function:
 * company: jsheng
 * @author wanghn      [e-mail]
 */
public class FullScreenTest2 extends JFrame {

	private static final long serialVersionUID = 1L;
	private Image bgImage;
	private Image myImage;
	private Image myImage2;
	private boolean flag;
	
	public static void main(String[] args) {

        DisplayMode displayMode = new DisplayMode(800, 600, 16,
                DisplayMode.REFRESH_RATE_UNKNOWN);
        FullScreenTest2 test = new FullScreenTest2();
        test.run(displayMode);
    }
	public void loadImages() {
        bgImage = loadImage("images/Blue hills.jpg");
        myImage = loadImage("images/a1.jpg");
        myImage2 = loadImage("images/a2.jpg");
        flag = true;
        repaint();
    }
	
    private Image loadImage(String fileName) {
        return new ImageIcon(fileName).getImage();
    }
    public void run(DisplayMode displayMode) {
        setBackground(Color.black);
        setForeground(Color.white);
        setFont(new Font("Dialog", 0, 24));
        MyScreenMgr screen = new MyScreenMgr();
        try {
        	screen.setFullScreen(displayMode, this);
        	loadImages();
            Thread.sleep(4000);
        }catch (InterruptedException ex) { }
        finally {
            screen.reScreen();
        }
    }


    public void paint(Graphics g) {
    	if(g instanceof Graphics2D){
    		Graphics2D g1 = (Graphics2D) g;
    		g1.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    	
    	  
          if (flag) {
              g1.drawImage(bgImage, 0, 0, null);
              g1.drawImage(myImage, 100, 0, null);
              g1.drawImage(myImage2, 305, 0, null);
             
              g1.drawString("欢迎访问J盛科技!我的qq6668220", 200, 500);
          }
          else {
              g.drawString("正在读取图片", 5, 24);
          }
          }
    }
}

评论

1 楼 kinganpo 2011-08-26