Crash because of ”number of remaining buffer elements” …?

Troubleshooting General Help
1

Hi!

The game I’m working on always crashes at the same point, when I’m looking at a Spatial.

More I can’t tell about that problem, the game ends and I get that error:



java.lang.IllegalArgumentException: Number of remaining buffer elements is 0, must be at least 1. Because at most 1 elements can be returned, a buffer with at least 1 elements is required, regardless of actual returned element count

at org.lwjgl.BufferChecks.throwBufferSizeException(BufferChecks.java:162)

at org.lwjgl.BufferChecks.checkBufferSize(BufferChecks.java:189)

at org.lwjgl.BufferChecks.checkBuffer(BufferChecks.java:258)

at org.lwjgl.opengl.GL15.glBufferData(GL15.java:155)

at com.jme3.renderer.lwjgl.LwjglRenderer.updateBufferData(LwjglRenderer.java:2054)

at com.jme3.renderer.lwjgl.LwjglRenderer.setVertexAttrib(LwjglRenderer.java:2182)

at com.jme3.renderer.lwjgl.LwjglRenderer.setVertexAttrib(LwjglRenderer.java:2217)

at com.jme3.renderer.lwjgl.LwjglRenderer.renderMeshDefault(LwjglRenderer.java:2422)

at com.jme3.renderer.lwjgl.LwjglRenderer.renderMesh(LwjglRenderer.java:2469)

at com.jme3.material.Material.render(Material.java:1103)

at com.jme3.renderer.RenderManager.renderGeometry(RenderManager.java:658)

at com.jme3.renderer.queue.RenderQueue.renderGeometryList(RenderQueue.java:301)

at com.jme3.renderer.queue.RenderQueue.renderQueue(RenderQueue.java:350)

at com.jme3.renderer.RenderManager.renderViewPortQueues(RenderManager.java:919)

at com.jme3.renderer.RenderManager.flushQueue(RenderManager.java:850)

at com.jme3.renderer.RenderManager.renderViewPort(RenderManager.java:1126)

at com.jme3.renderer.RenderManager.render(RenderManager.java:1174)

at com.jme3.app.SimpleApplication.update(SimpleApplication.java:254)

at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:149)

at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:182)

at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:223)

at java.lang.Thread.run(Thread.java:722)



The Spatial itself seems to be okay, it’s loaded fine and i can see it before the game stops…



It definitely to do with that code snippet:



[java]

if (doorSpatial.getLocalTranslation().distance(cam.getLocation()) < 15 && “Dungeon Entrance”.equals(getPointedTarget())) {

actionText.setText("[E] Open the door");

} else {

actionText.setText("");

}

}

[/java]

The method getPointedTarget():

[java]



CollisionResults results;

Ray ray;

String targetName;

float dist;

Vector3f pt;

Geometry target;



private String getPointedTarget() {

results = new CollisionResults();

ray = new Ray(cam.getLocation(), cam.getDirection());

rootNode.collideWith(ray, results);



for (int i = 1; i < results.size(); i++) {

dist = results.getCollision(i).getDistance();

pt = results.getCollision(i).getContactPoint();

targetName = results.getCollision(i).getGeometry().getName();

}



target = null;



if (results.size() > 0) {

target = results.getClosestCollision().getGeometry();

targetName = target.getName();

System.out.println(targetName);

}



return targetName;

}



[/java]

because when I comment it out, the application runs fine.

Any ideas?

The exception is not pointing at my code directly, what’s going wrong?

2


I got it, it’s just because of the line



[java]actionText.setText("");[/java]



No characters, that caused the error.

changed it to



[java]actionText.setText(" ");[/java]

2 Likes
3

What is actionText?

4

A BitmapText.

It shows the action + the button to interact with sth.

for e.x.: [E] Open the door

5

Hmmm… BitmapText shouldn’t fail with an empty string. May be a bug.



If you can put together a simple test case illustrating the problem then it will help whoever gets time to fix this.

6

I looked into it, I have a fix I’m about to commit…



Here is a test case for the problem. Hold the TAB key to see the text disappear, release to see some text come back.



[java]

/*

  • Copyright © 2009-2010 jMonkeyEngine
  • All rights reserved.

    *
  • Redistribution and use in source and binary forms, with or without
  • modification, are permitted provided that the following conditions are
  • met:

    *
    • Redistributions of source code must retain the above copyright
  • notice, this list of conditions and the following disclaimer.

    *
    • Redistributions in binary form must reproduce the above copyright
  • notice, this list of conditions and the following disclaimer in the
  • documentation and/or other materials provided with the distribution.

    *
    • Neither the name of ‘jMonkeyEngine’ nor the names of its contributors
  • may be used to endorse or promote products derived from this software
  • without specific prior written permission.

    *
  • THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  • "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  • TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  • PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  • CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  • EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  • PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  • PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  • LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  • NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  • SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    /



    package jme3test.gui;



    import com.jme3.app.SimpleApplication;

    import com.jme3.font.BitmapFont;

    import com.jme3.font.BitmapText;

    import com.jme3.font.LineWrapMode;

    import com.jme3.font.Rectangle;

    import com.jme3.input.KeyInput;

    import com.jme3.input.RawInputListener;

    import com.jme3.input.controls.ActionListener;

    import com.jme3.input.controls.KeyTrigger;

    import com.jme3.input.event.    ;



    public class TestBitmapFont extends SimpleApplication {



    private String txtB =

    “ABCDEFGHIKLMNOPQRSTUVWXYZ1234567 890`~!@#$%^&*()-=_+[];’,./{}|:<>?”;



    private BitmapText txt;

    private BitmapText txt2;

    private BitmapText txt3;



    public static void main(String[] args){

    TestBitmapFont app = new TestBitmapFont();

    app.start();

    }



    @Override

    public void simpleInitApp() {

    inputManager.addMapping(“WordWrap”, new KeyTrigger(KeyInput.KEY_TAB));

    inputManager.addListener(keyListener, “WordWrap”);

    inputManager.addRawInputListener(textListener);



    BitmapFont fnt = assetManager.loadFont(“Interface/Fonts/Default.fnt”);

    txt = new BitmapText(fnt, false);

    txt.setBox(new Rectangle(0, 0, settings.getWidth(), settings.getHeight()));

    txt.setSize(fnt.getPreferredSize() * 2f);

    txt.setText(txtB);

    txt.setLocalTranslation(0, txt.getHeight(), 0);

    guiNode.attachChild(txt);



    txt2 = new BitmapText(fnt, false);

    txt2.setSize(fnt.getPreferredSize() * 1.2f);

    txt2.setText(“Text without restriction. nText without restriction. Text without restriction. Text without restriction”);

    txt2.setLocalTranslation(0, txt2.getHeight(), 0);

    guiNode.attachChild(txt2);



    txt3 = new BitmapText(fnt, false);

    txt3.setBox(new Rectangle(0, 0, settings.getWidth(), 0));

    txt3.setText(“Press Tab to toggle word-wrap. type text and enter to input text”);

    txt3.setLocalTranslation(0, settings.getHeight()/2, 0);

    guiNode.attachChild(txt3);

    }



    private ActionListener keyListener = new ActionListener() {

    @Override

    public void onAction(String name, boolean isPressed, float tpf) {

    if(txt.getText().equals("")){

    txt.setText(“Hi”);

    }

    else{

    txt.setText("");

    }

    }

    };



    private RawInputListener textListener = new RawInputListener() {

    private StringBuilder str = new StringBuilder();



    @Override

    public void onMouseMotionEvent(MouseMotionEvent evt) { }



    @Override

    public void onMouseButtonEvent(MouseButtonEvent evt) { }



    @Override

    public void onKeyEvent(KeyInputEvent evt) {

    if (evt.isReleased())

    return;

    if (evt.getKeyChar() == ‘n’ || evt.getKeyChar() == ‘r’) {

    txt3.setText(str.toString());

    str.setLength(0);

    } else {

    str.append(evt.getKeyChar());

    }

    }



    @Override

    public void onJoyButtonEvent(JoyButtonEvent evt) { }



    @Override

    public void onJoyAxisEvent(JoyAxisEvent evt) { }



    @Override

    public void endInput() { }



    @Override

    public void beginInput() { }



    @Override

    public void onTouchEvent(TouchEvent evt) { }

    };



    }

    [/java]
2 Likes
7

ok, the fix is committed in revisions 9389 and 9390.



http://code.google.com/p/jmonkeyengine/source/detail?r=9389

http://code.google.com/p/jmonkeyengine/source/detail?r=9390

1 Like
8

Cool thanks :), I looked at the diffs and I think:



L139 you should get rid of - [java]System.out.println("Creating new StringBlock and Letters"); [/java] in BitmapText.java



L93 - I also agree getting rid of [java]if (arrayBased)[/java] in BitmapTextPage.java :slight_smile:

9
@wezrule said:L139 you should get rid of - [java]System.out.println("Creating new StringBlock and Letters"); [/java] in BitmapText.java


Yeah, thanks.. Already took all the debugging stuff out a little while ago.. r9391 and 9392
10

ah right