bodyBarDef= new BodyDef();
bodyBarDef.type = BodyDef.BodyType.StaticBody;
bodyBarDef.position.set(getX()+getWidth()/2,getY()+getHeight()/2);
crossbarBody = world.createBody(bodyBarDef);
ChainShape shape = new ChainShape();
shape.createChain(new Vector2[]{new Vector2(getX(),getY()), new
Vector2(getX()+getWidth(),getY()), new
Vector2(getX()+getWidth(),getY()+getHeight())});
FixtureDef fdEf = new FixtureDef();
fdEf.shape = shape;
fdEf.density =1f;
fdEf.friction=0;
fdEf.restitution=1f;
crossbarBody.createFixture(fdEf).setUserData(this);