Sample of SiO2 DebugHudState?

User Code & Projects lemur
1

I’ve tried to attach the appstate, but I get

java.lang.NullPointerException
	at com.simsilica.lemur.Label.<init>(Label.java:101)
	at com.simsilica.lemur.Label.<init>(Label.java:78)
	at com.simsilica.state.DebugHudState$DebugView.<init>(DebugHudState.java:247)
	at com.simsilica.state.DebugHudState.createDebugValue(DebugHudState.java:100)
2

You left out important parts of the stack trace (so frustrating) so I have to guess… but it seems like you are calling createDebugValue() with a null name.

“Sample of SiO2 DebugHudState?”

…same as the sample for everything else:

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3

A side note: this code don’t work because Lemur is not initialized. But SiO2 lets the user discover it by himself :stuck_out_tongue:

import com.jme3.app.SimpleApplication;
import com.jme3.app.state.AppState;
import com.simsilica.state.DebugHudState;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
public class HelloJME3 extends SimpleApplication {

    public static void main(String[] args) {
        HelloJME3 app = new HelloJME3(new DebugHudState());
        app.start(); // start the game
    }

    public HelloJME3(AppState... appstates) {
        super(appstates);
    }

    @Override
    public void simpleInitApp() {

    }
}
4

Still didn’t understand what I did wrong:

import com.jme3.app.SimpleApplication;
import com.jme3.app.state.AppState;
import com.simsilica.lemur.GuiGlobals;
import com.simsilica.lemur.core.VersionedHolder;
import com.simsilica.state.DebugHudState;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
public class HelloJME3 extends SimpleApplication {
private VersionedHolder<String> positionDisplay;
    public static void main(String[] args) {
        HelloJME3 app = new HelloJME3();
        app.start(); // start the game
    }

    public HelloJME3(AppState... appstates) {
        super(appstates);
    }

    @Override
    public void simpleInitApp() {
        GuiGlobals.initialize(this);
 
        GuiGlobals globals = GuiGlobals.getInstance();
        DebugHudState debug=new DebugHudState();
        stateManager.attach(debug);
        positionDisplay=debug.createDebugValue("aaa", DebugHudState.Location.Bottom);
        positionDisplay.setObject("aaa");
    }
}

GRAVE: Uncaught exception thrown in Thread[jME3 Main,5,main]
java.lang.NullPointerException
	at com.simsilica.state.DebugHudState.createDebugValue(DebugHudState.java:112)
	at HelloJME3.simpleInitApp(HelloJME3.java:32)
	at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:220)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:130)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:211)
	at java.lang.Thread.run(Thread.java:745)
5

Well, now you are accessing the state before it has been initialized. You should generally do almost nothing in simpleInitApp() because it runs before anything.

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