anchor.diff:      } else if (binding.equals("Down")) {
         if (value) { down = true; } else { down = false; }
       } else if (binding.equals("Jump")) {
  -      player.jump();
  +      player.jump(new Vector3f(0,10,0));
       }
     }
   
  
positive.code:     heightmap = new ImageBasedHeightMap(heightMapImage.getImage());
      heightmap.load();
  
      /** 3. We have prepared material and heightmap. 
       * Now we create the actual terrain:
       * 3.1) Create a TerrainQuad and name it "my terrain".
       * 3.2) A good value for terrain tiles is 64x64 -- so we supply 64+1=65.
  
negative.code:     /** Set up Physics */
      bulletAppState = new BulletAppState();
      stateManager.attach(bulletAppState);
      //Uncomment for debugging.
      //bulletAppState.setDebugEnabled(true);
  
      flyCam.setMoveSpeed(100);
      setUpKeys();
  
      /** 1. Create terrain material and load four textures into it. */
      mat_terrain = new Material(assetManager,
              "Common/MatDefs/Terrain/Terrain.j3md");
  
      /** 1.1) Add ALPHA map (for red-blue-green coded splat textures) */
  