Hi,
I am trying to save and load a Map, that also holds its own Material.
I get the following Error:
[java]
java.lang.NullPointerException
at com.jme3.texture.Texture.read(Texture.java:593)
at com.jme3.texture.Texture2D.read(Texture2D.java:215)
at com.jme3.export.binary.BinaryImporter.readObject(BinaryImporter.java:341)
at com.jme3.export.binary.BinaryInputCapsule.readSavable(BinaryInputCapsule.java:458)
at com.jme3.material.MatParam.read(MatParam.java:325)
at com.jme3.material.MatParamTexture.read(MatParamTexture.java:62)
at com.jme3.export.binary.BinaryImporter.readObject(BinaryImporter.java:341)
at com.jme3.export.binary.BinaryInputCapsule.resolveIDs(BinaryInputCapsule.java:484)
at com.jme3.export.binary.BinaryInputCapsule.readStringSavableMap(BinaryInputCapsule.java:668)
at com.jme3.material.Material.read(Material.java:1122)
at com.jme3.export.binary.BinaryImporter.readObject(BinaryImporter.java:341)
at com.jme3.export.binary.BinaryInputCapsule.readSavable(BinaryInputCapsule.java:458)
at VoxelFun.TileMap.read(TileMap.java:335)
at com.jme3.export.binary.BinaryImporter.readObject(BinaryImporter.java:341)
at com.jme3.export.binary.BinaryImporter.load(BinaryImporter.java:243)
at com.jme3.export.binary.BinaryImporter.load(BinaryImporter.java:130)
at com.jme3.export.binary.BinaryImporter.load(BinaryImporter.java:271)
at com.jme3.export.binary.BinaryImporter.load(BinaryImporter.java:266)
at VoxelFun.MapAppState.loadMapFile(MapAppState.java:129)
at VoxelFun.MapAppState.loadMap(MapAppState.java:122)
at VoxelFun.MapAppState.onAction(MapAppState.java:108)
at com.jme3.input.InputManager.invokeActions(InputManager.java:168)
at com.jme3.input.InputManager.onKeyEventQueued(InputManager.java:425)
at com.jme3.input.InputManager.processQueue(InputManager.java:799)
at com.jme3.input.InputManager.update(InputManager.java:851)
at com.jme3.app.Application.update(Application.java:598)
at com.jme3.app.SimpleApplication.update(SimpleApplication.java:233)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:149)
at com.jme3.system.lwjgl.LwjglCanvas.runLoop(LwjglCanvas.java:227)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:223)
at java.lang.Thread.run(Thread.java:722)
[/java]
I create the Material like this: ( the image is different version of this one: http://dwarffortresswiki.org/index.php/File:Phoebus_16x16.pn)
[java]
mat = new Material(getAssetManager(), “Common/MatDefs/Misc/Unshaded.j3md”);
mat.setTexture(“ColorMap”,
getAssetManager().loadTexture(“Textures/Phoebus_16x16_TextBackground.png”));
[/java]
and then save and load it here:
[java]
public void write(JmeExporter ex) throws IOException {
OutputCapsule capsule = ex.getCapsule(this);
[…]
capsule.write(MATERIAL, “material”, new Material());
}
public void read(JmeImporter im) throws IOException {
InputCapsule capsule = im.getCapsule(this);
[…]
MATERIAL = (Material) capsule.readSavable(“material”, new Material()); //Line 335
}
[/java]
Can anybody give me some pointers, maybe i am doing something horribly wrong?
The texture doesn’t seem to be available to the assetmanager in the loading call.
The AssetManager was null.
i added
[java]
importer.setAssetManager(app.getAssetManager());
[/java]
to set the AssetManager of the BinaryImporter to my Applications AssetManager and now it all works.
Just another configuration you just have to know you need to do.
@ingorm said:
The AssetManager was null.
i added
[java]
importer.setAssetManager(app.getAssetManager());
[/java]
to set the AssetManager of the BinaryImporter to my Applications AssetManager and now it all works.
Just another configuration you just have to know you need to do.
I think that's because you are using the importer directly so there is more setup involved... versus letting the asset manager load your asset. I think it's not an encouraged way which is why maybe this setup isn't documented that well.
A bit of context: We are building a mapeditor for tilemaps (think Final Fantasy Tactics) with a single mesh, and we wanted to have different “tilesets” aka textures for different maps.
Saving the material with the map was the straightforward way of doing it.
I was fooled by the Save and Load Tutorial as the sample code also features a Material being saved and loaded. I think i’ll put some note there somewhere.
Read that tutorial again, its been corrected and theres no BinaryImporter used.
Ah now i understand.
I overread the part about the userdata and i guess i should have said that i was using the binary importer in the first post 
Learned this one the hard way. Thanks for your time, both of you.