Fahad,
You didn't show how/where you are transferring the new position data to the
server? If you are doing this within the Behavior processing loop and you
are using synchronous IO you might be slowing down the whole Behavior
processing... Also make sure you are not opening/closing a new socket
connection everytime you want to transfer data (doh!) as this will be very
slow.
You are going to have to compromise between keeping the two players in synch
(i.e. synchronous updates on every frame would be best) and getting decent
interactive movement (use a low priority thread to periodically synchronize
the positions of the players).
Sincerely,
Daniel Selman
[EMAIL PROTECTED]
http://www.tornadolabs.com
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Fahad Aziz
> Sent: 07 February 2000 12:33
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Hello
>
>
> What you are trying to achieve is that the whole game is actually being
> played at server.
> On the other hand..
> In my way of development.. the great thing is the thin communication. that
> is .. the only 'thing' that will transferred will be some co-ordinates. or
> a vector, of hardly 10-50 bytes.
>
>
> lets get back to the original problem
> i have removed everything from my scene graph. just a box. even then my
> speed of moving that box using keyboard is very slow.
> any suggestion, why?
>
> i am using the following code for keyboard input:
>
>
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>
> Transform3D move = new Transform3D();
>
> public void initialize()
> {
>
> keyboardEvents = new WakeupCriterion[2];
>
> // Only wake up when a key is pressed or released
>
> keyboardEvents[0] = new
> WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
> keyboardEvents[1] = new
> WakeupOnAWTEvent(KeyEvent.KEY_RELEASED);
> keyboardCriterion = new WakeupOr(keyboardEvents);
> wakeupOn (keyboardCriterion);
> }
>
>
> public void processStimulus (Enumeration criteria)
> {
> WakeupCriterion wakeup;
> AWTEvent[] event;
> KeyEvent evt;
>
> do {
> wakeup = (WakeupCriterion) criteria.nextElement();
> if (wakeup instanceof WakeupOnAWTEvent) {
> event =
> ((WakeupOnAWTEvent)wakeup).getAWTEvent();
> for (int i=0; i<event.length; i++) {
> evt = (KeyEvent) event[i];
> if
> (evt.getID()==KeyEvent.KEY_PRESSED) {
> KEY_PRESSED=true;
>
> switch(evt.getKeyCode()) {
>
> case
> KeyEvent.VK_LEFT: // move left
>
> posx=posx-change;
>
> move.set(new Vector3d(posx, posy,0.0f));
>
> transformGroup.setTransform(move);
> break;
>
> case
> KeyEvent.VK_RIGHT: // move right
>
> posx=posx+change;
>
> move.set(new Vector3d(posx, posy,0.0f));
>
> transformGroup.setTransform(move);
> break;
>
> } //end of switch
> } end of processStimulus
>
>
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>
> i just wanted to give u the idea , how inout is taken and how the position
> of a trasnformGroup is changed,
> is there any other more efficient way?
>
> ThanX.
> fahad
>
>
>
>
>
>
>
> Rayan Jreije <[EMAIL PROTECTED]> on 02/07/2000 10:07:32 AM
>
> Please respond to Discussion list for Java 3D API
> <[EMAIL PROTECTED]>
>
> To: [EMAIL PROTECTED]
> cc: (bcc: Fahad Aziz/pk/Netsol)
>
> Subject: Re: [JAVA3D] Hello
>
>
>
>
> Thanks Fahad,
> So you have separate scenegraph for every player?
> And the servlet is used only to exchange positions?
> So as i understand you are "replicating" the geometry among users,
> So I conclude there's no one shared scenegraph on the server.
>
> What do you think about Having only one scenegraph on the server,
> and having different views distributed among different users.
> Meaning that every user will have different Canvas3D, and the connection
> between the main scenegraph and the canvas3D would be through sockets.
>
> Just an idea,What do you think?
> I would apppreciate your opinion.
> Thanks,
> --Rayan Jreije
>
>
>
> -----Original Message-----
> From: Fahad Aziz [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 07, 2000 9:55 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Hello
>
>
> I am using two transform groups, for two players.
> What i require to do is that i move the two transform groups, as the two
> plyers move themselves. i simply use setTransform to perform this job.
>
> What is transferred between different users is the new position of player
> and the position where it hits the ball,
>
> 1. Player 1 forward its position to the servlet.
> 2. Servlet has a socket connection with player 2,
> 3. Servlet forwards this information to Player 2.
> 4. Player 2 Receives the information and updates the postion of the
> player2's transform group.
>
>
> hope the picture is now clear.
>
> fahad
> Lahore, Pakistan
>
>
>
>
>
>
>
>
> Rayan Jreije <[EMAIL PROTECTED]> on 02/07/2000 07:25:48 AM
>
> Please respond to Discussion list for Java 3D API
> <[EMAIL PROTECTED]>
>
> To: [EMAIL PROTECTED]
> cc: (bcc: Fahad Aziz/pk/Netsol)
>
> Subject: Re: [JAVA3D] Hello
>
>
>
>
> Hello Fahad,
> I guess you are experiencing slowliness of your input not because of the
> interface to the keyboard itself, but because you might have a
> large number
> of active Java 3D behaviors at once. I am not sure in this case
> if Keyboard
> buffering might help!
> The solution is to redesign your user interaction in a way that you
> minimize
> the number of active behaviors running at once.
>
> I am also working on a project and i need your assistance in the
> subject of
> Multiplayer.
> You said you are using JServlets +socket communivation to make your
> application multiplayer(distrubited).
> What is your strategy in this issue?
> Are you building one scenegraph for every user?And where is the rendering
> happening?
> Are you rendering your scenegraph on the server and "streaming" the image
> to
> the user?
> Or you are rendering the scenegraph on every user machine?
>
> I would highly appreciate you sending me information or technical papers
> and
> references regarding this issue, because i am at the point to start a 3D
> collaborative application that is very similar to what you have already
> done.
>
> I would be pleased also if i get any feedback from any other
> members of the
> group.
> Sincerely,
> Rayan Jreij
>
>
> -----Original Message-----
> From: Fahad Aziz [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 07, 2000 8:54 AM
> To: [EMAIL PROTECTED]
> Subject: [JAVA3D] Hello
>
>
> Hi.
> I am a student of Bachelors, here at FAST ICS, Lahore-Pakistan
> I am working on a online game called : 3D Online Multiplayer Paranoid"
> I am using Java3D to develop the game and JServlets +Socket Communication
> to provide Multiplayer support
> I have successfuly developed the game. The only problem i am
> facing is the
> performance.
> Java3D is though comparatively slow, but why is the keyboard input takes
> much time.
> I am looking forward for your assistance in this regard.
> I want to implement keyboard-buffering thing, that used to solve
> my problem
> if there is some other way to get good, fast and prompt inputs from
> keyboard, i will highly appreciate.
>
> Thank You
> Fahad
>
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