collides.js

/**
 * Given two item objects with the following shape:
 *
 * {
 *   x: number,
 *   y: number,
 *   width: number,
 *   height: number
 * }
 *
 * where (x, y) denotes the position of the item's top-left corner
 * with respect to the top left area of the screen, and width and 
 * height correspond to the dimensions of the item,
 *
 * Write a function, `collides`, that takes in two items and returns a
 * boolean indicating if the two items overlap.
 */

/**
 * Determine if two items overlap
 * 
 * @param  {Item} l1 
 * @param  {Item} l2
 * @return {boolean}
 */
function collides(l1, l2) {
  // ...
}