PHP Royal Slider

<?php if(get_field('posts_category') != ""): ?>
<?php $slide_posts = new WP_Query(); ?>
<?php $slide_posts->query('category_name=' . get_field(posts_category) ); ?>
<?php $count = $slide_posts->post_count; ?>
<section>
	<div class="sliderContainer visibleNearby fullWidth clearfix royalSlider-preview">
	<div class="rsHeight">
		<div id="four-up-gallery" class="carousel-gallery royalSlider rsDefault">
				<div class="carouselSlide">	
				
				<?php 
					while ($slide_posts->have_posts()) : $slide_posts->the_post(); 
					if($post->ID != $sticky_1 && $post->ID != $sticky_2 && $post->ID != $sticky_3 && $post->ID != $sticky_4 ):
 					if($i != 0 && $i % 3 == 0) {echo '</div><div class="carouselSlide">';} ///* *****This splits a slide into 2****** */
 				?>
					<div class="third carouselItem">
                    	<?php 
                    		$thumb = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'medium' );
                    		$image = $thumb['0']; 
                    	?>
                    	<a href="<?php echo get_permalink($post->ID); ?>">
                    	<div class="carouselItemContent" style="background-image: url('/wp-content/themes/theme/images/gradient-shadow.png'), url('<?php echo $image; ?>');" >
                    		<h3>
								<?php echo get_the_title($post->ID); ?>
							</h3>
                    	</div>
                    	<div class="shadow">
                    	</div>
                    	</a>
                	</div>
                <?php 
					$i++;
					endif;
					endwhile;
					echo '</div>';
				?>
		</div><!-- four-up-gallery -->
		</div>
	</div>
	
</section>
<?php 
	endif; 
	wp_reset_postdata();
?>

    <script id="addJS">jQuery(document).ready(function($) {
  var si = $('#four-up-gallery').royalSlider({
  	slidesSpacing: 0,
  	sliderDrag: false,
    addActiveClass: true,
    controlNavigation: 'none',
    autoScaleSlider: true, 
    autoScaleSliderWidth: 1000,     
    autoScaleSliderHeight: 168,
    loop: false,
    fadeinLoadedSlide: false,
    globalCaption: true,
    arrowsNav: true,
    arrowsNavAutoHide: false,
    arrowsNavHideOnTouch: true,
    keyboardNavEnabled: false,
    navigateByClick: false
  }).data('royalSlider');

  // link to fifth slide from slider description.
  $('.slide4link').click(function(e) {
    si.goTo(4);
    return false;
  });
	$('.rsNext').click(function() {
    $('.royalSlider').royalSlider('next');
	});
	
	$('.rsPrev').click(function() {
    $('.royalSlider').royalSlider('prev');
	});
	
});
</script>

Hi Thatguy,
what does get_field(posts_category) grab? what field is that?
i have google and haven't found anything. I'm trying to do what you have done display grops of 3 images at once using royal slider.
Thanks

Also what's the value of $sticky_1, 2, etc