Hello. I'm too new to even matter 
But here's what I was fiddling with, in HelloIntersection.java
I've a modified sphere that looks like an ellipse of sorts and I surround it with an OrientedBoundingBox and I try to hit it with a bullet (that's all from HelloIntersection).
The problem is that when I hit the OrientedBoundingBox , it doesn't register as a hit, and when I try not to hit that OrientedBoundingBox then it does register a hit(by making the bullet disappear).
Using
bullet.getWorldBound().intersects( target.getWorldBound() )
where target is the ellipse
the bullet has a BoundingSphere
Note that when using BoundingBox or BoundingSphere on the ellipse it works as expected (when hitting the Bounding* one it registers as hit). I will later try CollisionTree thingy because I want the hit to be registered when it hits the ellipse not its bounding volume 
Here are the screenshots and the sourcecode (I tried to strip it from unnecessary code ie. sound, scenemonitor, score stats etc.)
I attached the screenshots, but you can see them only if you're logged in…
one screenshot will show where it will hit and the other one (with many bullets) will show that it didn't hit
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package org.temporary.tests.threeD;
import java.util.Random;
import java.util.logging.Logger;
import com.jme.app.SimpleGame;
import com.jme.bounding.BoundingSphere;
import com.jme.bounding.OrientedBoundingBox;
import com.jme.image.Texture;
import com.jme.input.InputHandler;
import com.jme.input.KeyInput;
import com.jme.input.action.InputAction;
import com.jme.input.action.InputActionEvent;
import com.jme.input.action.KeyInputAction;
import com.jme.math.Quaternion;
import com.jme.math.Vector3f;
import com.jme.renderer.ColorRGBA;
import com.jme.scene.Controller;
import com.jme.scene.Skybox;
import com.jme.scene.Spatial;
import com.jme.scene.Text;
import com.jme.scene.TriMesh;
import com.jme.scene.shape.Sphere;
import com.jme.scene.state.CullState;
import com.jme.scene.state.MaterialState;
import com.jme.util.TextureManager;
import com.jme.util.resource.ResourceLocatorTool;
import com.jme.util.resource.SimpleResourceLocator;
/**
* Started Date: Jul 24, 2004 <br>
* <br>
* Demonstrates intersection testing, sound, and making your own controller.
*
* @author Jack Lindamood
*/
public class OrientedBoundingBoxExampleTest2 extends SimpleGame {
private static final Logger logger = Logger.getLogger( OrientedBoundingBoxExampleTest2.class.getName() );
/** Material for my bullet */
MaterialState bulletMaterial;
/** Target you're trying to hit */
Sphere target;
/** Used to move target location on a hit */
Random r = new Random();
/** A sky box for our scene. */
Skybox skybox;
public static void main( String[] args ) {
OrientedBoundingBoxExampleTest2 app = new OrientedBoundingBoxExampleTest2();
app.setConfigShowMode( ConfigShowMode.ShowIfNoConfig );
app.start();
}
@Override
protected void simpleInitGame() {
display.setVSyncEnabled( true );
/** Create a + for the middle of the screen */
Text cross = Text.createDefaultTextLabel( "Crosshairs", "+" );
// 8 is half the width of a font char
/** Move the + to the middle */
cross.setLocalTranslation( new Vector3f( display.getWidth() / 2f - 8f, display.getHeight() / 2f - 8f, 0 ) );
statNode.attachChild( cross );
target = new Sphere( "my sphere", 15, 15, 1 );
Vector3f trans1 = new Vector3f( 1.5345f, -0.0397f, 0.0f );
target.setLocalTranslation( trans1 );
Quaternion q1 = new Quaternion( 0.1288f, -0.3779f, -0.8533f, 0.3353f );
target.setLocalRotation( q1 );
Vector3f scale1 = new Vector3f( 3.76f, 1.41f, 0.84f );
target.setLocalScale( scale1 );
// BoundingSphere x = new BoundingSphere();
// BoundingVolume y = new BoundingSphere();
// y = x.transform( q1.clone(), trans1.clone(), scale1.clone() );
target.setModelBound( new OrientedBoundingBox() );// BUGGED?
target.updateModelBound();
rootNode.attachChild( target );
/** Create a skybox to surround our world */
this.setupSky();
// Attach the skybox to our root node, and force the rootnode to show
// so that the skybox will always show
rootNode.attachChild( skybox );
rootNode.setCullHint( Spatial.CullHint.Never );
// create an action to shown button activity//copied from TestInputHandler.java
InputAction buttonAction = new InputAction() {
public void performAction( InputActionEvent evt ) {
// String actionString;
if ( evt.getTriggerPressed() ) {
( new FireBullet() ).performAction( evt );
}
}
};
/**
* Set the action called "firebullet", bound to KEY_F, to performAction
* FireBullet
*/
input.addAction( new FireBullet(), "firebullet", KeyInput.KEY_SPACE, false );
input.addAction( new FireBullet(), "firebullet2", KeyInput.KEY_LCONTROL, true );
input.addAction( buttonAction, InputHandler.DEVICE_MOUSE, 0/* left click */, InputHandler.AXIS_NONE, false );
input.addAction( buttonAction, InputHandler.DEVICE_MOUSE, 1/* right click */, InputHandler.AXIS_NONE, true );
/** Make bullet material */
bulletMaterial = display.getRenderer().createMaterialState();
bulletMaterial.setEmissive( ColorRGBA.green.clone() );
/** Make target material */
MaterialState redMaterial = display.getRenderer().createMaterialState();
redMaterial.setDiffuse( ColorRGBA.red.clone() );
target.setRenderState( redMaterial );
}
private void setupSky() {
skybox = new Skybox( "skybox", 200, 200, 200 );
try {
ResourceLocatorTool.addResourceLocator( ResourceLocatorTool.TYPE_TEXTURE, new SimpleResourceLocator(
this.getClass().getResource( "/jmetest/data/texture/" ) ) );
} catch ( Exception e ) {
logger.warning( "Unable to access texture directory." );
e.printStackTrace();
}
skybox.setTexture( Skybox.Face.North, TextureManager.loadTexture( "north.jpg",
Texture.MinificationFilter.Trilinear, Texture.MagnificationFilter.Bilinear ) );
skybox.setTexture( Skybox.Face.West, TextureManager.loadTexture( "west.jpg",
Texture.MinificationFilter.Trilinear, Texture.MagnificationFilter.Bilinear ) );
skybox.setTexture( Skybox.Face.South, TextureManager.loadTexture( "south.jpg",
Texture.MinificationFilter.Trilinear, Texture.MagnificationFilter.Bilinear ) );
skybox.setTexture( Skybox.Face.East, TextureManager.loadTexture( "east.jpg",
Texture.MinificationFilter.Trilinear, Texture.MagnificationFilter.Bilinear ) );
skybox.setTexture( Skybox.Face.Up, TextureManager.loadTexture( "top.jpg", Texture.MinificationFilter.Trilinear,
Texture.MagnificationFilter.Bilinear ) );
skybox.setTexture( Skybox.Face.Down, TextureManager.loadTexture( "bottom.jpg",
Texture.MinificationFilter.Trilinear, Texture.MagnificationFilter.Bilinear ) );
skybox.preloadTextures();
CullState cullState = display.getRenderer().createCullState();
cullState.setCullFace( CullState.Face.None );
cullState.setEnabled( true );
skybox.setRenderState( cullState );
skybox.updateRenderState();
}
class FireBullet extends KeyInputAction {
int numBullets;
@Override
public void performAction( InputActionEvent evt ) {
logger.info( "BANG" );
/** Create bullet */
Sphere bullet = new Sphere( "bullet" + numBullets++, 8, 8, .25f );
bullet.setModelBound( new BoundingSphere() );
bullet.updateModelBound();
/** Move bullet to the camera location */
bullet.setLocalTranslation( new Vector3f( cam.getLocation() ) );
bullet.setRenderState( bulletMaterial );
/**
* Update the new world location for the bullet before I add a
* controller
*/
bullet.updateGeometricState( 0, true );
/**
* Add a movement controller to the bullet going in the camera's
* direction
*/
bullet.addController( new BulletMover( bullet, new Vector3f( cam.getDirection() ) ) );
rootNode.attachChild( bullet );
bullet.updateRenderState();
}
}
class BulletMover extends Controller {
private static final long serialVersionUID = 1L;
/** Bullet that's moving */
TriMesh bullet;
/** Direction of bullet */
Vector3f direction;
/** speed of bullet */
float speed = 10; // if too big,
// it might miss
/** Seconds it will last before going away */
float lifeTime = 50;
BulletMover( TriMesh bullet1, Vector3f direction1 ) {
bullet = bullet1;
direction = direction1;
direction.normalizeLocal();
}
@Override
public void update( float time ) {
// SceneMonitor.getMonitor().updateViewer( 0 );
lifeTime -= time;
/** If life is gone, remove it */
if ( lifeTime < 0 ) {
rootNode.detachChild( bullet );
boolean test1 = bullet.removeController( this );
assert test1;
return;
}
/** Move bullet */
Vector3f bulletPos = bullet.getLocalTranslation();
bulletPos.addLocal( direction.mult( time * speed ) );
bullet.setLocalTranslation( bulletPos );
/** Does the bullet intersect with target? */
if ( bullet.getWorldBound().intersects( target.getWorldBound() ) ) {
logger.info( "OUCH!!!" );
// target.setLocalTranslation( new Vector3f( r.nextFloat() * 10, r.nextFloat() * 10, r.nextFloat() * 10
// ) );
lifeTime = 0;
}
}
}
/**
* Called every frame for updating
*/
@Override
protected void simpleUpdate() {
// Move the skybox into position
skybox.getLocalTranslation().set( cam.getLocation().x, cam.getLocation().y, cam.getLocation().z );
}
}