jMonkeyEngine.org

I’m trying to figure out how to do things after the screen is started, in other words, after the elements are rendered on screen. The ScreenController.onStartScreen() doesn’t do what I’m wanting, it is called before the elements are rendered. I have a progress bar in my screen, and I’m trying to make the progress bar starts after the screen is started, otherwise, the things will be loaded but the progress bar won’t be rendered . Any ideas?

…if you click a button run a void like:…

It’s the problem. The start screen have just a progress bar, no buttons. The progress bar have to be started automatically. Btw, it’s alreay have a load var. It seems be an easy thing, but it’s not. I think it’s almost impossible. The start screen code is this :

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package rhythmgame.nifty.control.screen;

import de.lessvoid.nifty.Nifty;
import de.lessvoid.nifty.screen.Screen;
import rhythmgame.nifty.control.progressbar.ProgressBar;
import rhythmgame.nifty.control.progressbar.ProgressBarControl;

/**
 *
 * @author Glauco Márdano
 */
public class StartScreenControl extends RhythmGameScreenController {

    private ProgressBar loadingBar;
    private boolean load;

    @Override
    public void bind(Nifty nifty, Screen screen) {
        super.bind(nifty, screen);
        loadingBar = screen.findControl("startLoadingBar", ProgressBarControl.class);
    }

    @Override
    public void onStartScreen() {
        super.onStartScreen();
        loadStuffs();
    }

    @Override
    public void loadStuffs() {
        getApp().loadStuffs(loadingBar);
        load = true;
    }

    @Override
    public void update(float tpf) {
        super.update(tpf);
        if (load) {
            goToScreen("mainMenuScreen");
            getNifty().removeScreen("startScreen");
            load = false;
            getStateManager().detach(this);
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<nifty xmlns="http://nifty-gui.sourceforge.net/nifty-1.3.xsd&quot; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance&quot; xsi:schemaLocation="http://nifty-gui.sourceforge.net/nifty-1.3.xsd http://nifty-gui.sourceforge.net/nifty-1.3.xsd"&gt;
  <!-- +++++++++++++++++++++++++++++++++++++++ -->
  <!-- start screen -->
  <!-- +++++++++++++++++++++++++++++++++++++++ -->
    <useStyles filename="Interface/Styles/styles.xml" />
    <useControls filename="nifty-default-controls.xml" />
    <useControls filename="Interface/Controls/controls.xml" />
    <screen id="startScreen" controller="rhythmgame.nifty.control.screen.StartScreenControl">
        <layer id="startLoadingLayer" childLayout="horizontal">
            <panel height="10%"/>
            <panel id = "startLoadingPanel" childLayout="vertical" align="center" valign="center" height="32px" width="80%">
                <control image="Interface/Skins/ProgressBar/inner-orange.png" id="startLoadingBar" name="progressBar" align="center" valign="center" width="100%" height="100%" progress="0f" direction="horizontal" progresstext=""/>
            </panel>
            <panel height="10%"/>
        </layer>
    </screen>
</nifty>

It looks nifty isn’t run in another thread, then if I use wait() it’ll stop both loadStuffs() and the nifty itself, then it will do nothing. The only way to use wait() is calling it in another thread I think, but I don’t wanna to use any threads on this stage. It’s not needed. Also, it’s a poor solution.

I know, I use Timer in-game to synchronize the sound with the move bars, but risking a time is not a good approach. Also, who will garantee that the screen will be started in 1 second ? It might takes more than expected. It might be a solution, but I don’t like it.

Thanks, I really appreciate your help. Good luck too .

your doing your loading and rendering in the same frame, if you wait a frame before doing the loading you should see your Progress bar screen first.

This might help http://jmonkeyengine.org/wiki/doku.php/jme3:advanced:loading_screen

No sucess too. I did it in simpleInitApp():

nifty.gotoScreen("startScreen");
loadStuffs();

But the loadStuffs() method is still being called before the screen is displayed. I tried to go to the start screen in simpleInitApp() method and when the app starts I call loadStuffs() in simpleUpdate() too, but it does the same thing. As I said before, it seems be a easy thing to do, but it isn’t. Anyway, thanks for the helps.

hmmmmmmm. Yeah! The render thread . Then I’ll try to run the loadStuffs in another thread.