Updating foundation-section for async/await

lib/addons/p5.sound.js

@@ -2945,11 +2945,10 @@ function () {
 }();
 /**
  *  loadSound() returns a new p5.SoundFile from a specified
- *  path. If called during preload(), the p5.SoundFile will be ready
- *  to play in time for setup() and draw(). If called outside of
- *  preload, the p5.SoundFile will not be ready immediately, so
- *  loadSound accepts a callback as the second parameter. Using a
- *  <a href="https://github.com/processing/p5.js/wiki/Local-server">
+ *  path. If used with asynchronous setup (via `async`/`await`), the p5.SoundFile 
+ * will be ready to play in time for `setup()` and `draw()`. If called outside of an async context, 
+ * the p5.SoundFile will not be ready immediately, so loadSound accepts a callback as the second
+ *  parameter. Using a <a href="https://github.com/processing/p5.js/wiki/Local-server">
  *  local server</a> is recommended when loading external files.
  *
  *  @method loadSound

src/core/main.js

@@ -14,9 +14,10 @@ import * as constants from './constants';
  * a p5 sketch.  It expects an incoming sketch closure and it can also
  * take an optional node parameter for attaching the generated p5 canvas
  * to a node.  The sketch closure takes the newly created p5 instance as
- * its sole argument and may optionally set <a href="#/p5/preload">preload()</a>,
- * <a href="#/p5/setup">setup()</a>, and/or
- * <a href="#/p5/draw">draw()</a> properties on it for running a sketch.
+ * its sole argument and may optionally set an asynchronous function
+ * using `async/await`, along with the standard <a href="#/p5/setup">setup()</a>,
+ *  and/or <a href="#/p5/setup">setup()</a>, and/or <a href="#/p5/draw">draw()</a>
+ *  properties on it for running a sketch.
  *
  * A p5 sketch can run in "global" or "instance" mode:
  * "global"   - all properties and methods are attached to the window
@@ -465,6 +466,8 @@ for (const k in constants) {
  * <a href="#/p5/draw">draw()</a> begins looping. If the
  * <a href="#/p5/preload">preload()</a> is declared, then `setup()` will
  * run immediately after <a href="#/p5/preload">preload()</a> finishes
+ * 
+ * 
  * loading assets.
  *
  * Note: `setup()` doesn’t have to be declared, but it’s common practice to do so.

src/core/reference.js

@@ -1137,6 +1137,115 @@
  * </div>
  */
 
+
+/**
+ * Asynchronous Asset Loading with Async/Await.
+ *
+ * The keywords `async` and `await` let you write asynchronous code in a more
+ * straightforward, linear style. Instead of nesting callbacks or juggling
+ * multiple promise chains, you can pause execution at `await` while waiting
+ * for a promise to resolve. This makes your code flow more naturally, as if
+ * it were synchronous.
+ *
+ * When you mark a function with the `async` keyword—like `async function setup() {...}`—it
+ * signals that the function contains asynchronous operations and will return a
+ * promise. Any time you use the `await` keyword inside this function, JavaScript
+ * will pause the function’s execution until the awaited promise settles.
+ *
+ * In p5.js, you can use `async/await` to handle media loading functions such as
+ * `loadImage()`, `loadJSON()`, `loadSound()`, and so on. This allows you to:
+ *   - load files in a more readable, top-to-bottom manner
+ *   - decide when the assets are fully available before proceeding
+ *
+ * Nested callbacks require managing additional information and behavior.
+ * Lazy loading of assets with `async/await` can simplify control flow,
+ * but it also requires you to design your sketch around waiting for
+ * each operation to complete.
+ *
+ * Callbacks are still fully supported, so code that passes success / error
+ * functions to loaders like `loadImage()` or `loadJSON()` will behave exactly
+ * as it always has. This compatibility means sketches written with the older
+ * pattern don’t need any changes, and you can freely mix callbacks and
+ * `async/await` in the same project if that suits your workflow.
+ *
+ * In the example below, `setup()` is declared as an async function. We `await`
+ * the completion of both `loadImage()` and `loadJSON()` before calling
+ * `createCanvas()`. Only then does the sketch proceed, guaranteeing the assets
+ * are available for immediate use.
+ *
+ * ```js
+ * let img, data;
+ *
+ * async function setup() {
+ *   // Wait until the image and JSON data have fully loaded.
+ *   img = await loadImage("./my-image.png");
+ *   data = await loadJSON("./my-data.json");
+ *
+ *   // Once the assets are loaded, create the canvas.
+ *   createCanvas(400, 400);
+ * }
+ * ```
+ *
+ * @property async_await
+ * @example
+ * <div>
+ * <code>
+ * // Click and drag the mouse to view the scene from different angles.
+ * 
+ * let shape;
+ *
+ * // Load the file and create a p5.Geometry object.
+ * async function setup() {
+ *   shape = await loadModel('/assets/teapot.obj');
+ *
+ *   createCanvas(100, 100, WEBGL);
+ *
+ *   describe('A white teapot drawn against a gray background.');
+ * }
+ *
+ * function draw() {
+ *   background(200);
+ *
+ *   // Enable orbiting with the mouse.
+ *   orbitControl();
+ *
+ *   // Draw the shape.
+ *   model(shape);
+ * }
+ * </code>
+ * </div>
+ * 
+ * <div>
+ * <code>
+ * let font;
+ *
+ * async function setup() {
+ *   // Load a font for WebGL mode.
+ *   font = await loadFont('assets/inconsolata.otf');
+ *
+ *   createCanvas(100, 100, WEBGL);
+ *
+ *   describe(
+ *     "A gray square. The mouse's x- and y-coordinates are displayed as the user moves the mouse."
+ *   );
+ * }
+ *
+ * function draw() {
+ *   background(200);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER);
+ *   textSize(16);
+ *   textFont(font);
+ *   fill(0);
+ *
+ *   // Display the mouse's coordinates.
+ *   text(`x: ${mouseX} y: ${mouseY}`, 0, 0);
+ * }
+ * </code>
+ * </div>
+ */
+
 /**
  * A list that keeps several pieces of data in order.
  *

src/utilities/time_date.js

@@ -117,11 +117,10 @@ function timeDate(p5, fn){
    *
    * If a sketch has a
    * <a href="#/p5/setup">setup()</a> function, then `millis()` begins tracking
-   * time before the code in <a href="#/p5/setup">setup()</a> runs. If a
-   * sketch includes a <a href="#/p5/preload">preload()</a> function, then
-   * `millis()` begins tracking time as soon as the code in
-   * <a href="#/p5/preload">preload()</a> starts running.
-   *
+   * time before the code in <a href="#/p5/setup">setup()</a> runs.  If a
+   * sketch includes asynchronous loading using `async`/`await`, then
+   * `millis()` begins tracking time as soon as the asynchronous code
+   * starts running.
    * @method millis
    * @return {Number} number of milliseconds since starting the sketch.
    *