code: private void update(CollisionCategory category)
      {
          final CollisionResult result = results.get(category.getName());
  
          if (result != null
              && (result.getX() != null || result.getY() != null)
              && Boolean.TRUE.equals(enabledAxis.get(category.getAxis())))
          {
              onCollided(result, category);
          }
      }
docs: Update the tile collision computation.
  
  @param category The collision category reference.