Correct way to export from blender to ogre format?

Question

When I export from blender to ogre using the blender2ogre add-on, I'm not getting anything besides a scene most of the time and when I get a mesh I never get a material. Is there something wrong with my export procedure or what else could I be doing wrong?

Update

I can export the basic cube from blender to ogre but when I download a model and try to export it I don't get the meshes.

Update 2

I tried again and selecting the model in Blender does the difference like the answer here says. I can export an alien and get the mesh and material:

I rename the files:

$ ls workspace/DungeonWorld2/assets/objects/creatures/alien/
Cube.001.mesh          Material.002.material  Material.005.material
Cube.001.mesh.xml      Material.003.material
Cube.001.skeleton.xml  Material.004.material
dev@dev-OptiPlex-745:~$ ls workspace/DungeonWorld2/assets/objects/creatures/alien/
alien.mesh          Material.002.material  Material.005.material
alien.mesh.xml      Material.003.material
alien.skeleton.xml  Material.004.material
dev@dev-OptiPlex-745:~$ 

But how do I actually load the material since the alien now turns up in the game with no material but it does render the mesh:

    Spatial model3 = assetManager
            .loadModel("objects/creatures/alien/alien.mesh.xml");
    model3.scale(0.3f, 0.3f, 0.3f);
    model3.setLocalTranslation(-40.0f, 3.5f, -20.0f);
    rootNode.attachChild(model3);

Answer 1

Ok, as exporting Blender scene and meshes to Ogre using blender2ogre module does works fine for me, I will try to run a very simple test in order to help you point out what is going wrong on your side.

So in order to get something very simple to compare with, I will export the initial Blender scene (the one with the simple cube) without changing anything.

1. If I unselect the cube and export the scene using the Ogre3D blender module (default settings) I get the following file(s):

   • test.scene

2. If I select the cube and export the scene using the Ogre3D blender module (default settings) I get the following file(s):

   • test.scene
   • Cube.mesh
   • Cube.mesh.xml (useful to convert to older Ogre mesh formats)
   • Material.material

The .scene files must be parsed in the code beside the Ogre engine, but the .mesh files can be used directly with or without the .material files.

Obviously, at that point I can see only two reasons to your problem:

• whether you have a problem with the way you select your scene content before exporting
• or with you softs version (Blender 2.6.3 + blender2ogre 0.5.5 doesn't works for me for instance)

This quick test was done under Linux with Blender version 2.6.3 and blender2ogre version 0.5.7-preview

If you can, try to make this simple test, and we will see if we can help you further.