Spatial disappears when I move it

[oreganBR]

I’m facing a problem, this time it’s when I’m putting together everything I’ve learned and doing something, but this happened and it’s something that I was not scheduled for.

- YouTube

[jayfella]

We have absolutely no idea unless you post some code

[pspeed]

…especially and including the code that is printing your debugging output.

…because how is it possible that the spatial is moving with the camera when the values of it’s location aren’t changing?

Waaaaaaaaaaaay too much going on that we can’t see.

[oreganBR]

@pspeed

…especially and including the code that is printing your debugging output.

sorry kkkkk.

[Empire_Phoenix]

My wild guess, an NAN in rotation or position

[oreganBR]

Game.zip

[oreganBR]

I do not believe … I do not believe that the problem can be this … in fact, I do not understand very well about the guartary rotation (x and z w).

[pspeed]

Well, you didn’t output the rotation so we don’t know.

You will get more people to help if you find a way to include the relevant bits of code here without making us download and extract a zip. Maybe some folks will have the time but most won’t bother.

[oreganBR]

@pspeed

Well, you didn’t output the rotation so we don’t know.

You will get more people to help if you find a way to include the relevant bits of code here without making us download and extract a zip. Maybe some folks will have the time but most won’t bother.

Thanks for the information … I will make the code available on the forum.

[pspeed]

In case it’s necessary:

How to type code blocks

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[oreganBR]

public void simpleInitApp() { super.flyCam.setEnabled(false); super.flyCam.setMoveSpeed(20); super.setDisplayFps(true); cam.setLocation(new Vector3f(disx, disy + 10, disz - 10)); cam.setRotation(new Quaternion(0.18495204f, -0.0086373165f, 0.0016255928f, 0.9827082f)); nod = (Node) assetManager.loadModel("Models/valet2.j3o"); spt = nod.getChild("2b02f008_obj");

    terr = new TerrainMaker(this);

    DirectionalLight sun = new DirectionalLight();
    sun.setDirection((new Vector3f(-0.5f, -0.5f, -0.5f)).normalizeLocal());
    sun.setColor(ColorRGBA.White);
    rootNode.addLight(sun);
    rootNode.attachChild(spt);
    
    
    
    
    
    
    AnimControl cont=spt.getControl(AnimControl.class);
    deb=new SkeletonDebugger("mixanorig:Hips", cont.getSkeleton());
    Material mat=new Material(
            assetManager,
            "Common/MatDefs/Misc/Unshaded.j3md"
    );
    mat.setColor("Color", ColorRGBA.Blue);
    deb.setMaterial(mat);
    
    rootNode.attachChild(deb);

    
    
    
    
    
    if (!flyCam.isEnabled()) {
        this.initTeclado();
    }
}

public void onAnimCycleDone(AnimControl cont, AnimChannel can, String annome) {
}

public void onAnimChange(AnimControl control, AnimChannel channel, String animName) {
    // sem uso
}

public void initTeclado() {
    inputManager.addMapping("x-", new KeyTrigger(KeyInput.KEY_S));
    inputManager.addMapping("x+", new KeyTrigger(KeyInput.KEY_W));
    inputManager.addMapping("z-", new KeyTrigger(KeyInput.KEY_D));
    inputManager.addMapping("z+", new KeyTrigger(KeyInput.KEY_A));
    inputManager.addMapping("tab", new KeyTrigger(KeyInput.KEY_TAB));
    inputManager.addMapping("o", new KeyTrigger(KeyInput.KEY_O));
    inputManager.addMapping("l", new KeyTrigger(KeyInput.KEY_L));
    inputManager.addMapping("i", new KeyTrigger(KeyInput.KEY_I));
    inputManager.addMapping("k", new KeyTrigger(KeyInput.KEY_K));
    
    
    inputManager.addListener(ac, "x+");
    inputManager.addListener(ac, "x-");
    inputManager.addListener(ac, "z+");
    inputManager.addListener(ac, "z-");
    inputManager.addListener(ac, "tab");
}
private final int velo = 50;
private float disx = 0;
private final float disy = 0;
private float disz = 0;

@Override
public void simpleUpdate(float tpf) {
    System.out.println("|-------------------|");
    System.out.println("locCAMERA"+cam.getLocation());
    System.out.println("rotCAMERA"+cam.getRotation());
    System.out.println("locSPATIAL"+spt.getLocalTranslation());
    System.out.println("|-------------------|");
    if (zma) {
        disx += tpf * velo;
        spt.setLocalTranslation(disx, disy, disz);
        cam.setLocation(new Vector3f(disx-10, disy + 10, disz));
        //spt.setLocalRotation(new Quaternion(0,90,0,1));
        cam.setRotation(Constants.zma);
    }
    if (zme) {
        disx -= tpf * velo;
        spt.setLocalTranslation(disx, disy, disz);
        cam.setLocation(new Vector3f(disx+10, disy + 10, disz));
        //spt.setLocalRotation(new Quaternion(0, 0, 0, 1));
        cam.setRotation(Constants.zme);
    }
    if (xma) {
        disz += tpf * velo;
        spt.setLocalTranslation(disx, disy, disz);
        spt.setLocalRotation(new Quaternion(0, 0, 0, 1));
        deb.setLocalTranslation(disx, disy+3, disz);
        cam.setFrustum(1f, 1000f, -0.6627417f, 0.6627417f, 0.41421357f, -0.41421357f);
        cam.setLocation(new Vector3f(disx + 2.4f, disy + 10, disz - 15));
    }
    if (xme) {
        disz -= tpf * velo;
        spt.setLocalTranslation(disx, disy, disz);
        spt.setLocalRotation(new Quaternion(0, 0, 180, 1));
        deb.setLocalTranslation(disx, disy+3, disz);
        cam.setFrustum(1f, 900f, -0.6627417f, 0.6627417f, 0.41421357f, -0.41421357f);
        cam.setLocation(new Vector3f(disx + 2.4f, disy + 10, disz + 15));
    }
}
boolean xma = false, xme = false, zma = false, zme = false;
private int a=2;
private int b=1;
private ActionListener ac = new ActionListener() {
    @Override
    public void onAction(String name, boolean keyPressed, float tpf) {
        if (!flyCam.isEnabled()) {
            if (name.equals("x+")) {
                xma = keyPressed;
            }
            if (name.equals("x-")) {
                xme = keyPressed;
            }
            if (name.equals("z+")) {
                zma = keyPressed;
            }
            if (name.equals("z-")) {
                zme = keyPressed;
            }
        }
        if (name.equals("tab")) {
            flyCam.setEnabled(true);
        }
    }

};

[Ev1lbl0w]

Why do you call this?

cam.setFrustum(1f, 1000f, -0.6627417f, 0.6627417f, 0.41421357f, -0.41421357f);

[oreganBR]

@Ev1lbl0w

Why do you call this?

cam.setFrustum(1f, 1000f, -0.6627417f, 0.6627417f, 0.41421357f, -0.41421357f);

I was making the camera spin when the character moves, so that the character does not escape the camera. Searching, I noticed that it was better to use this method than setLocalRotation (). But I can test using this method.

[Ev1lbl0w]

So, you need to make your camera look at the character?
Because if yes, there’s an easier way to rotate the Camera rather to creating Quaternions:

cam.lookAt(character.getLocalTranslation(), Vector3f.UP)

Or even better, learn how to use ChaseCamera, a 3rd person camera that, as the name implies, chases a specific spatial.

[oreganBR]

@Ev1lbl0w

So, you need to make your camera look at the character?Because if yes, there’s an easier way to rotate the Camera rather to creating Quaternions:

cam.lookAt(character.getLocalTranslation(), Vector3f.UP)

Or even better, learn how to use ChaseCamera, a 3rd person camera that, as the name implies, chases a specific spatial.

thanks, i whill try.

[danielp]

I’d also suggest printing the position/rotation values for the model as soon as you calculate them - that way you will immediately catch Float.NaN or other suspicious values.

[NemesisMate]

@oreganBR

public void simpleInitApp() { super.flyCam.setEnabled(false); super.flyCam.setMoveSpeed(20); super.setDisplayFps(true); cam.setLocation(new Vector3f(disx, disy + 10, disz - 10)); cam.setRotation(new Quaternion(0.18495204f, -0.0086373165f, 0.0016255928f, 0.9827082f)); nod = (Node) assetManager.loadModel(“Models/valet2.j3o”); spt = nod.getChild(“2b02f008_obj”);

How to type code blocks

Markdown code block : Embed your code in 3 backticks, like this ```<optional language> //your code here ``` If you don’t know how to type a backtick, here are some related links : How to type a backtick on windows For mac users : On qwerty keyboards it’s the key right to the left shift (along with the " key). On azerty keyboards it’s the key over the right shift (along with the £ key). This uses highlight.js, but uses a subset of the supported langages (following code block uses java)…

[oreganBR]

@Ev1lbl0w

So, you need to make your camera look at the character?Because if yes, there’s an easier way to rotate the Camera rather to creating Quaternions:

cam.lookAt(character.getLocalTranslation(), Vector3f.UP)

Or even better, learn how to use ChaseCamera, a 3rd person camera that, as the name implies, chases a specific spatial.

I found this method very interesting but in fact it is not what I plan, but I was happy to know that there is something so easy, this will open up my horizons.

[pspeed]

http://javadoc.jmonkeyengine.org/

jMonkeyEngine Docs

[oreganBR]

I managed to solve … I’ll do a little tutorial about it … maybe it helps those who may have the same doubt, now or in the future …