Can not move my object (noob)

Troubleshooting General Help
1

I have setup a very primitive scene with a terrain(box) and 2 objects (another box and a sphere)

I am trying to set up some keybindings in order to move my object by it seems as though it ignores my key pressing.

the code follows:



import com.jme.app.SimpleGame;
import com.jme.scene.shape.Sphere;
import com.jme.scene.shape.Box;
import com.jme.math.Vector3f;
import com.jmex.physics.*;
import com.jme.light.PointLight;
import com.jme.scene.state.LightState;
import com.jme.renderer.ColorRGBA;
import com.jmex.physics.effects.Attractor;
import com.jme.bounding.BoundingBox;
import com.jme.bounding.BoundingSphere;
import com.jme.bounding.OrientedBoundingBox;
import com.jme.input.KeyBindingManager;
import com.jme.input.KeyInput;
public class Main extends SimpleGame{
    Box h;
    public static void main (String[] args)
    {
        Main app = new Main();
        app.setDialogBehaviour(SimpleGame.ALWAYS_SHOW_PROPS_DIALOG);
        app.start();
       
    }
     protected void simpleInitGame() {
     PhysicsWorld.create();
     Sphere b=new Sphere("My sphere",15,15,1f);
     b.setModelBound(new BoundingSphere());
     b.updateModelBound();
     b.setSolidColor(ColorRGBA.red);
     rootNode.attachChild(b);
     DynamicPhysicsObject s = new DynamicPhysicsObject(b,.5f);
     PhysicsWorld.getInstance().addObject(s);
     s.setGravityMode(1);
     s.setEnabled(true);
     s.syncWithGraphical();
     h = new Box("mymovingbox",new Vector3f(9, -8, 0), 1f,1f, 1f);
     h.setModelBound(new OrientedBoundingBox());
     h.updateModelBound();
     h.setSolidColor(ColorRGBA.red);
     rootNode.attachChild(h);
     DynamicPhysicsObject d = new DynamicPhysicsObject(h,15f);
     PhysicsWorld.getInstance().addObject(d);
     KeyBindingManager.getKeyBindingManager().set("for",KeyInput.KEY_1);
     KeyBindingManager.getKeyBindingManager().set("left",KeyInput.KEY_2);
     KeyBindingManager.getKeyBindingManager().set("back",KeyInput.KEY_3);
     KeyBindingManager.getKeyBindingManager().set("right",KeyInput.KEY_4);
     rootNode.updateWorldData(1f);
     d.setGravityMode(0);
     d.setEnabled(true);
     d.syncWithGraphical();
     Box c = new Box ("Terrain", new Vector3f (-10, -10, -10), 1000,1, 1000);
     StaticPhysicsObject myTerrain = new StaticPhysicsObject(c);
     c.hasCollision(c, true);
     c.setModelBound(new BoundingBox());
     c.updateModelBound();
     rootNode.attachChild(c);
     PhysicsWorld.getInstance().addObject(myTerrain);
     myTerrain.syncWithGraphical();
     LightState ls=display.getRenderer().createLightState();
     PointLight pl = new PointLight();
     pl.setEnabled(true);
     pl.setAmbient(ColorRGBA.green);
     ls.attach(pl);
     rootNode.setRenderState(ls);
     rootNode.updateWorldBound();
   }
     protected void simpleUpdate() {
     Vector3f v = new Vector3f(h.getLocalTranslation());
     if (KeyBindingManager.getKeyBindingManager().isValidCommand("for", false)) {
     v.x = v.x+.1f;
     h.setLocalTranslation(v);
     }
     if (KeyBindingManager.getKeyBindingManager().isValidCommand("left", false)) {
      v.y = v.y-.1f;
     h.setLocalTranslation(v);
     }
     if (KeyBindingManager.getKeyBindingManager().isValidCommand("back", false)) {
     v.x = v.x-.1f;
     h.setLocalTranslation(v);
        }
     if (KeyBindingManager.getKeyBindingManager().isValidCommand("for", false)) {
     v.y = v.y+.1f;
     h.setLocalTranslation(v);
        }
        PhysicsWorld.getInstance().update(1f);
    }
}



I know that I am missing something here but I cannot figure out exactly what :P

Thank you very much

PS: Irrelevant but I just figure out and would like to be of help to other noobs as me.
I used to get an OPENGLException 1281 with a 3ds model and it was fixed when I changed the textures from tga format to bmp.
I also got texture loading problems when loading 3ds files and having jpg textures so I ust converted them to jpg
2

Don't know about your specific example (don't have physics installed here at the moment), but below is something that should work.

Of course it only moves a bit (with 1 keypress). Change false to true if you want the event to repeat, like this:



if (KeyBindingManager.getKeyBindingManager().isValidCommand("for", true)) {



import com.jme.app.SimpleGame;
import com.jme.input.KeyBindingManager;
import com.jme.input.KeyInput;
import com.jme.math.Vector3f;
import com.jme.scene.shape.Box;

public class TestMove extends SimpleGame {

   public static void main(String[] a) {
      TestMove app = new TestMove();
      app.setDialogBehaviour(SimpleGame.ALWAYS_SHOW_PROPS_DIALOG);
      app.start();
   }

   Box h;
   protected void simpleInitGame() {
      h = new Box("mymovingbox", new Vector3f(9, -8, 0), 1f, 1f, 1f);
      rootNode.attachChild(h);
      KeyBindingManager.getKeyBindingManager().set("for", KeyInput.KEY_F);
   }

   protected void simpleUpdate() {
      if (KeyBindingManager.getKeyBindingManager().isValidCommand("for", false)) {
         System.out.println("F pressed");
         h.getLocalTranslation().x += 0.1f;
      }
   }

}

3

Thanks llama, it was more or less what I was doing.

it was a physics staff I had to resync the movement with the DynamicPhysicsObject that was bound with h.

I just fixed it by

d.synchwithGraphical();



Thanks again for your immediate reply

4

I would like to note here that moving physics objects simply by changing their location is not a very good idea. Consider moving them with forces or even desired velocities (joints) to get better physical effects.