@Override
    protected void processEntities(ImmutableBag<Entity> entities)
    {
        Input input = container.getInput();
        
        if (input.isKeyDown(Input.KEY_LEFT))
        {
            offsetX -= 0.4f * world.getDelta();
        }
        else if (input.isKeyDown(Input.KEY_RIGHT))
        {
            offsetX += 0.4f * world.getDelta();
        }
        
        if (input.isKeyDown(Input.KEY_UP))
        {
            offsetY -= 0.4f * world.getDelta();
        }
        else if (input.isKeyDown(Input.KEY_DOWN))
        {
            offsetY += 0.4f * world.getDelta();
        }
    }