[SOLVED] weird libgdx game problem....

wreed12345 · January 11, 2013, 10:53pm

Alright well I just started making a game and I have a problem… I made a mainmenu screen but as I load it the render method does not load and it goes back to the main class to finish there which is confusing…
Check out the code here:
Here is the main class for the game: http://pastebin.com/idQ7Fd0D
and here is the main menu class: http://pastebin.com/wYQZMHna
assets class (i dont really think any one will need this but just in case) http://pastebin.com/JWLJA6Ck

Those classes are pretty short so dont get worried about that. If you look at the source code you will notice I put some println’s in every method to see what gets called. here is the output:
AL lib: MMDevApiMsgProc: Unexpected message: 0 assest pre mainmenuscreenend show resize po
that first “AL lib” comes in red but it works with another game with that error showing up so I dont think thats the problem, but does anyone know what that means? And anyway as you can see the mainmenu screen is getting called to but the render isnt… I based this simple game so far on the superjumper example just to help me get started. Any thoughts are appreciated

namrog84 · January 11, 2013, 11:15pm

Its probably because your class, that is extending Game

is @overriding things that it probably shouldn’t be. Or you aren’t calling super

github.com

libgdx/libgdx/blob/master/gdx/src/com/badlogic/gdx/Game.java

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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package com.badlogic.gdx;

/** <p>
 * An {@link ApplicationListener} that delegates to a {@link Screen}. This allows an application to easily have multiple screens.

This file has been truncated. show original

Examine game, and how setScreen and the current functions behave.
It works a little bit differently then when you use the extend applicationlistener approach.

edit: easy fix
in your “public class SideScroller extends Game”
All those ‘blank @override’ methods you have, just delete them all
keep the onCreate though, and it should all start working.
easy fix #2
add super.____(); for each @overriden area, specifically the render area
super.render(); inside your @override public void render()
The others should be super’d as well, or just removed completely until you have something to add.

In the superJumper example, he did @override the render, but he also called super.render();
super allows the overridden code to still execute, in addition to the code you’ve added.

https://github.com/libgdx/libgdx/blob/master/demos/superjumper/superjumper/src/com/badlogicgames/superjumper/SuperJumper.java

wreed12345 · January 11, 2013, 11:34pm

Thank you ! the super.render() fixed the problem! many thanks!

wreed12345 · January 11, 2013, 11:38pm

Also do you know what this means:
AL lib: MMDevApiMsgProc: Unexpected message: 0
That error always come up now when i run libgdx games…

namrog84 · January 12, 2013, 1:36am

I do not, I haven’t done anything in java in a while now, I hope to be getting back into it.
I think its just part of the libgdx standard output message

Also, it says there are 0 unexpected messages, so that seems like a good thing.
It would be bad to have unexpected messages.
Honestly, I wouldn’t worry about it, especially if everything seems to be working fine.