jMonkeyEngine / jMonkeyEngine/jmonkeyengine

If you do not load default settings the flyCam will be equal null

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Dominant language
Java
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Description

public static void main(String[] args) {
        Battletown app = new Battletown();
        
        AppSettings settings = new AppSettings(false);
        settings.setFullscreen(true);
        
        app.setSettings(settings);
        
        app.setShowSettings(false); //Settings dialog not supported on mac
        app.start();
    }
flyCam.setEnabled(false);
SEVERE: Uncaught exception thrown in Thread[jME3 Headless Main,5,main]
java.lang.NullPointerException: Cannot invoke "com.jme3.input.FlyByCamera.setEnabled(boolean)" because "this.flyCam" is null
	at com.waystudio.Battletown.simpleInitApp(Battletown.java:31)
	at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:240)
	at com.jme3.system.NullContext.initInThread(NullContext.java:102)
	at com.jme3.system.NullContext.run(NullContext.java:146)
	at java.base/java.lang.Thread.run(Thread.java:833)

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Battletown.simpleInitApp() call shown in the report, then read SimpleApplication.initialize() and NullContext.initInThread() around the stack trace. Reproduce the AppSettings(false) setup without loading default settings and verify that calling flyCam.setEnabled(false) no longer causes a NullPointerException.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
game-dev
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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