Java 3D

Sun, 13 Jan 2013 11:28:25 GMT

Hej alle!

Jeg har lige set en tutorial p� youtube, fordi jeg gerne vil pr�ve at lave et 3D spil eller lignende i Java. Efter at have set videoen igennem virker koden ikke, s� jeg tjekker koden og videoen igen, men det virker stadig ikke... Der skulle gerne poppe en sort firkant op p� sk�rmen, men det sker bare ikke.. Jeg k�rer den her som en java application og ikke som en applet. Modtager ingen Exceptions, og min Thread starter og k�rer rundt, det har jeg tjekket

PS. Sorry for the comments

Component.java

Java kode

 import java.awt.*;
 import javax.swing.*;
 
 import java.applet.*;
 /**
  * Game DotMS
  * @author Jacob Andreas Sneding Rohde
  * @version 1.0
  */
 public class Component extends Applet implements Runnable
 {
     public static final long serialVersionUID = 1L; // Some shit to stop warning for this applet crap
     
     public static boolean isRunning = false;
     
     public static int pixelSize = 4;
     
     public static Dimension size = new Dimension(800, 600);
     public static Dimension pixel = new Dimension( (int) size.getWidth() / pixelSize, (int) size.getHeight() / pixelSize); // Basicly just making a square that's 4 times smaller than the screen
     
     public static Image screen; // this is the image that the user will see.. Basicly just the gameworld
     
     public Component()
     {
         setPreferredSize(size);
     }
     
     public void init() // this is for initializing our shit
     {
         screen = createVolatileImage( (int) pixel.getWidth(), (int) pixel.getHeight() ); // This goes into the graphicscard and sets the size to how many pixels we wanted in our game
     }
     
     public void start() // We only want this method to be run once, and that's when our game has to start, unless we're gonna dublicate the game
     {
         isRunning = true;
         
         new Thread(this).start(); // Makes a thread of this object/class and starts it.. Basicly just starts the damn program aight?
     }
     
     public void stop()
     {
         isRunning = false;
     }
     
     public void tick() // Physics like moving stuff 'n' shit
     {
         
     }
     
     public void render() // Putting the shit to our screen, this method only runs when the program starts
     {
         Graphics g = screen.getGraphics(); // This is giving us the control over the screenimage that's shown on our screen (basicly this is just giving us the power to edit the screenimage), with the g object
         // Note that the screenimage hasn't yet been drawed to the screen, so the user can't see this fucking pic
         
         g.setColor(Color.black);
         g.fillRect(10, 10, 100, 100);
         
         g.dispose(); // Uninitialize g, pretty much g aint dating the screen image no more.. How sad
         g = getGraphics(); // Getting the graphics from the applet, so we now have control over the graphics of the applet
         
         g.drawImage(screen, 0, 0, (int) size.getWidth(), (int) size.getHeight(), null); // Now the user can see the picture..
         
         g.dispose(); // Once again unitializing the g object
     }
     
     public void run()
     {
         while(isRunning) // Is the program running? 
         {            
             try
             {
                 Thread.sleep(5); // Makes the program sleep.. Well yeah, just pause.. For porn. Anyway, this is to comprehend lagg, cause if we made this program update as fast as the computer could.. Damn, we would see some troubles boy
             }
             catch(Exception e)
             {
                 System.out.println("Couldn't make the thread sleep");
             }
         }
     }
     
     public static void main(String args[])
     {
         Component component = new Component();
         
         JFrame frame = new JFrame();
         frame.add(component);
         frame.pack(); // Make sure the components in the JFrame can't get any smaller than they're set to be, even though if the screen is big enough, they can get bigger. 
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setTitle("Rohdes awesome 3D game");
         frame.setLocationRelativeTo(null); // Makes sure the window pops up in the middle of the screen when program is opened
         frame.setVisible(true);
 
         component.init();
         component.start();
         
     }
 }

Hvordan f�r man f�lgende kode til at virke ?

Fri, 16 Mar 2012 09:48:21 GMT

Hej Udviklere,

S� fik jeg l�st mit forrige sp�rgsm�l, med at kompile java source kode direkte til en string. Dette har dog, gjort at jeg er rendt ind i et nyt problem, n�r jeg fors�ger, at k�re det som en java applet. Det virker, fint s� l�nge at det blot er en almindelig application, men s� snart, at jeg skifter til en java applet, returnere dette kode kald null.

Java kode

 ToolProvider.getSystemJavaCompiler();

Jeg var lidt inde i selve ToolProvider klassen, for at se, hvorfor det enligt kan v�re, at den returnere null, n�r man har tilf�jet, alle klasserne fra tools.jar til sin classpath.

Java kode

 package javax.tools;
 
 import java.io.File;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URL;
 import java.net.URLClassLoader;
 
 public class ToolProvider
 {
   public static JavaCompiler getSystemJavaCompiler()
   {
     if (Lazy.compilerClass == null)
       return null;
     try {
       return (JavaCompiler)Lazy.compilerClass.newInstance(); } catch (Throwable localThrowable) {
     }
     return null;
   }
 
   public static ClassLoader getSystemToolClassLoader()
   {
     if (Lazy.compilerClass == null)
       return null;
     return Lazy.compilerClass.getClassLoader();
   }
 
   static class Lazy
   {
     private static final String defaultJavaCompilerName = "com.sun.tools.javac.api.JavacTool";
     private static final String[] defaultToolsLocation = { "lib", "tools.jar" };
     static final Class<? extends JavaCompiler> compilerClass;
 
     private static Class<?> findClass()
       throws MalformedURLException, ClassNotFoundException
     {
       URLClassLoader localURLClassLoader;
       try
       {
         return enableAsserts(Class.forName("com.sun.tools.javac.api.JavacTool", false, null));
       }
       catch (ClassNotFoundException localFile)
       {
         File localFile = new File(System.getProperty("java.home"));
         if (localFile.getName().equalsIgnoreCase("jre"))
           localFile = localFile.getParentFile();
         for (String str : defaultToolsLocation)
           localFile = new File(localFile, str);
         ??? = new URL[] { localFile.toURI().toURL() };
         localURLClassLoader = URLClassLoader.newInstance(???);
         localURLClassLoader.setPackageAssertionStatus("com.sun.tools.javac", true);
       }return (Class<?>)Class.forName("com.sun.tools.javac.api.JavacTool", false, localURLClassLoader);
     }
 
     private static Class<?> enableAsserts(Class<?> paramClass) {
       try {
         ClassLoader localClassLoader = paramClass.getClassLoader();
         if (localClassLoader != null)
           localClassLoader.setPackageAssertionStatus("com.sun.tools.javac", true);
       }
       catch (SecurityException localSecurityException) {
       }
       return paramClass;
     }
 
     static
     {
       Class localClass = null;
       try {
         localClass = findClass().asSubclass(JavaCompiler.class);
       }
       catch (Throwable localThrowable) {
       }
       compilerClass = localClass;
     }
   }
 }

Min filstruktur i min endelige .jar fil jeg deployer ser, s�danne her ud:

navn.jar
- com
- org
- META-INF
- sun
- view (egne klasser)

Er der nogen af jer, der har en id� om hvad man skal g�re for, at f� en javaCompiler inde i java applet ?

PS. Det skal da lige n�vnes, at det er en signeret applet, s� der har f�et granted alle sikkerhedstilladelser.

Udvikleren.dk - Seneste [java-applet] forum tr�de

Java 3D

Hvordan f�r man f�lgende kode til at virke ?