Java-Gaming.org Hi !
Featured games (83)
games approved by the League of Dukes
Games in Showcase (513)
Games in Android Showcase (120)
games submitted by our members
Games in WIP (577)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  BufferStrategy doesn't work in Applet  (Read 1932 times)
0 Members and 1 Guest are viewing this topic.
Offline ra4king

JGO Kernel


Medals: 350
Projects: 3
Exp: 5 years


I'm the King!


« Posted 2011-06-09 02:25:02 »

Ah, it's been a while since I started a new Thread on JGO.
Well here I go:

I've been using JApplet for a long time. Now I decided that Swing isn't really necessary when I want to make a game that takes full control of the entire window so I decided to switch to Applet. However, it is not working! I thought I must have a bug somewhere in my game code that prevents this so instead of debugging my entire game, I made a simple test case:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
import java.applet.Applet;
import java.awt.Canvas;
import java.awt.Graphics2D;
import java.awt.image.BufferStrategy;

public class Test extends Applet implements Runnable {
   private static final long serialVersionUID = -5975037209475083278L;
   
   private Canvas canvas;
   
   public void init() {
      setSize(500,500);
     
      setIgnoreRepaint(true);
     
      canvas = new Canvas();
      add(canvas);
      canvas.createBufferStrategy(2);
   }
   
   public void start() {
      new Thread(this).start();
   }
   
   public void run() {
      BufferStrategy strategy = canvas.getBufferStrategy();
     
      long time = 0;
      int frames = 0;
     
      while(true) {
         if(System.nanoTime() >= time+1e9) {
            System.out.println(frames);
            frames = 0;
            time = System.nanoTime();
         }
         
         frames++;
         
         try {
            do {
               do {
                  Graphics2D g = (Graphics2D)strategy.getDrawGraphics();
                 
                  g.fillRect(50, 50, 100, 100);
                 
                  g.dispose();
               }while(strategy.contentsRestored());
               
               strategy.show();
            }while(strategy.contentsLost());
         }
         catch(Exception exc) {
            exc.printStackTrace();
         }
      }
   }
}


And sure enough! Try it yourself and see. I tested this in the browser and in the applet viewer. Nothing shows up.
I'm on Windows 7 64-bit using the latest and greatest Java 6 Update 26

However, extend JApplet instead of Applet and, voila, it works magnificently Smiley

I'm clueless so any explanations and/or workarounds are appreciated Cheesy

Offline Sinuath

Junior Duke


Medals: 2



« Reply #1 - Posted 2011-06-09 04:51:45 »

I find anything more complex then the Swing timer to be a bit above my head at this point. But this site has been extremely useful to me. If you can't find better advice perhaps the Util timer might be the way to go?

http://zetcode.com/tutorials/javagamestutorial/animation/

I've been reading this Java 1.4 Game Programming book and they state that the Swing library was meant to be a replacement for the AWT library. Now i can't confirm the validity of this claim, but i am curious. Why wouldn't you want to use the Swing Library?


Hey [you][/you], you should totally check out my boring Site ~ http://davediel.com/chris
Offline zoto

Senior Duke


Medals: 4



« Reply #2 - Posted 2011-06-09 05:39:56 »

1  
canvas.setSize(getWidth(), getHeight());
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline ra4king

JGO Kernel


Medals: 350
Projects: 3
Exp: 5 years


I'm the King!


« Reply #3 - Posted 2011-06-09 07:11:54 »

Sinuath, Swing adds extra overhead when I don't want to use it for a game.

zoto, O_O no way! Why did it automatically resize itself in JApplet and not in Applet? Thanks a ton! Smiley

Offline BoBear2681

JGO Coder


Medals: 19



« Reply #4 - Posted 2011-06-10 21:03:30 »

JApplet contains a content pane with a default LayoutManager of BorderLayout.  java.awt.Applet's default layout is FlowLayout.
Offline ra4king

JGO Kernel


Medals: 350
Projects: 3
Exp: 5 years


I'm the King!


« Reply #5 - Posted 2011-06-10 22:02:00 »

Ohh I didn't know Applet's default layout was FlowLayout. Thanks!

Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

Longarmx (52 views)
2014-10-17 03:59:02

Norakomi (43 views)
2014-10-16 15:22:06

Norakomi (33 views)
2014-10-16 15:20:20

lcass (37 views)
2014-10-15 16:18:58

TehJavaDev (68 views)
2014-10-14 00:39:48

TehJavaDev (66 views)
2014-10-14 00:35:47

TehJavaDev (59 views)
2014-10-14 00:32:37

BurntPizza (73 views)
2014-10-11 23:24:42

BurntPizza (45 views)
2014-10-11 23:10:45

BurntPizza (86 views)
2014-10-11 22:30:10
Understanding relations between setOrigin, setScale and setPosition in libGdx
by mbabuskov
2014-10-09 22:35:00

Definite guide to supporting multiple device resolutions on Android (2014)
by mbabuskov
2014-10-02 22:36:02

List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!