java - LIBGDX 3D not working -


so starting off 3d part of libgdx. downloaded latest nightly build , when followed tutorial got nullpointerexception on line(which mark in code). on line has nullpointer code

modelbatch.render(instance);

all values line there. instance has properties , pretty else in code to. ideas why getting nullpointerexception? in advance.

import com.badlogic.gdx.applicationlistener; import com.badlogic.gdx.gdx; import com.badlogic.gdx.graphics.color; import com.badlogic.gdx.graphics.gl10; import com.badlogic.gdx.graphics.perspectivecamera; import com.badlogic.gdx.graphics.vertexattributes.usage; import com.badlogic.gdx.graphics.g3d.model; import com.badlogic.gdx.graphics.g3d.modelbatch; import com.badlogic.gdx.graphics.g3d.modelinstance; import com.badlogic.gdx.graphics.g3d.materials.colorattribute; import com.badlogic.gdx.graphics.g3d.materials.material; import com.badlogic.gdx.graphics.g3d.utils.modelbuilder;   public class threedtest implements applicationlistener { public perspectivecamera camera; public modelbatch modelbatch; public model model; public modelinstance instance;      @override     public void create() {         camera =  new perspectivecamera(67, gdx.graphics.getwidth(), gdx.graphics.getheight());         camera.position.set(10f, 10f, 10f);         camera.lookat(0, 0, 0);         camera.near = 0.1f;         camera.far = 300f;         camera.update();      modelbuilder modelbuilder = new modelbuilder();     model = modelbuilder.createbox(5f, 5f, 5f,          new material(colorattribute.creatediffuse(color.green)),         usage.position | usage.normal);     instance = new modelinstance(model);     }      @override     public void resize(int width, int height) {      }      @override     public void render() {           gdx.gl.glviewport(0, 0, gdx.graphics.getwidth(), gdx.graphics.getheight());         gdx.gl.glclear(gl10.gl_color_buffer_bit | gl10.gl_depth_buffer_bit);          modelbatch.begin(camera);//begin rendering         modelbatch.render(instance);<--null pointer on line         modelbatch.end();//end rendering     }  @override public void pause() {  }  @override     public void resume() {      }      @override     public void dispose() {         model.dispose();     }

}

looking @ code never construct (and dispose) modelbatch instance. therefor modelbatch null, causing npe got.

add following line in create method:

modelbatch = new modelbatch();

and following line in dispose method:

modelbatch.dispose();

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