NavMesh in a custom control

Troubleshooting ai
1

Hey guys,

I want to implement the “NavMesh”-Code into a custom control. But it doesn’t work at all. I always get an error message.

“Exception in Control, scene content is removed” - After that nothing is visible any more. Can someone help me, please.

Here is the code:

public class ElliteControl extends AbstractControl {

private Vector3f targetLocation = new Vector3f(60, 7, -30);
private NavMeshPathfinder navi;
private float speed = 0; // not important
private Waypoint wayPoint;

@Override
protected void controlUpdate(float tpf) {
wayPoint = navi.getNextWaypoint();
if (wayPoint == null) {
    return;
}
Vector3f vector = wayPoint.getPosition().subtract(spatial.getWorldTranslation());
if (!(vector.length() < 1)) {
    spatial.move(vector.normalize().multLocal(tpf));
} else {
    navi.goToNextWaypoint();
}

spatial.rotate(getSpeed() * tpf, 0, 0);
}

@Override
protected void controlRender(RenderManager rm, ViewPort vp) {
}

@Override
public Control cloneForSpatial(Spatial spatial) {
ElliteControl control = new ElliteControl();
control.setTargetLocation(targetLocation);
control.setSpatial(spatial);

Geometry geom = (Geometry) spatial;
Mesh mesh = geom.getMesh();
NavMesh navMesh = new NavMesh(mesh);
navi = new NavMeshPathfinder(navMesh);
navi.setPosition(getTargetLocation());

return control;
}

@Override
public void setSpatial(Spatial spatial) {
if (spatial != null) {
    Geometry geom = (Geometry) spatial.getParent().getChild("Ellite");
    Mesh mesh = geom.getMesh();
    NavMesh navMesh = new NavMesh(mesh);
    navi = new NavMeshPathfinder(navMesh);
    navi.setPosition(getTargetLocation());
}
}

/*	    HERE ARE ALL THE "SET" AND "GET" -METHODS ************/
/*		NOTHING SPECIAL				    */
/**
 * @return the targetLocation
 */
public Vector3f getTargetLocation() {
return targetLocation;
}

/**
 * @param targetLocation the targetLocation to set
 */
public void setTargetLocation(Vector3f targetLocation) {
this.targetLocation = targetLocation;
}

/**
 * @return the speed
 */
public float getSpeed() {
return speed;
}

/**
 * @param speed the speed to set
 */
public void setSpeed(float speed) {
this.speed = speed;
}
}

I hope you can help me, monkeys.

Thank you,

Domenic

2

You’ve left all of the interesting parts out of your exception.

3

There is nothing more to see. Just a very small window with this text.

But thank you, for the answer. Do you need something else to help / support me?