CreditsNode

CreditsNode (from scenerystack/joist) is a VBox that renders a fixed, ordered set of credits fields — lead design, software development, team, contributors, quality assurance, graphic arts, sound design, and a final "thanks" note — as the content of the simulation's About dialog. Sim's credits option (a CreditsData object) is what you actually populate; CreditsNode is what turns it into a laid-out Node, built automatically by joist's AboutDialog when credits are present.

import { Sim, onReadyToLaunch } from 'scenerystack/sim';
import type { CreditsData } from 'scenerystack/joist';
import { Property } from 'scenerystack/axon';

const credits: CreditsData = {
  leadDesign: 'Alice Example',
  softwareDevelopment: 'Bob Example, Carol Example',
  team: 'Dan Example (accessibility), Erin Example (physics)',
  qualityAssurance: 'Frank Example',
  thanks: 'Thanks to the Foo Foundation for supporting this project.'
};

onReadyToLaunch( () => {
  const sim = new Sim( new Property( 'My Simulation' ), [ /* screens */ ], { credits } );
  sim.start(); // AboutDialog builds a CreditsNode from `credits` the first time it's opened
} );

You won't typically construct CreditsNode yourself — it's what AboutDialog builds internally from Sim's credits option — but its shape is documented here since CreditsData's fields are exactly what a sim author fills in.

CreditsData

Every field is an optional string; a field only renders a line if it's provided (non-empty):

Field	Rendered as
leadDesign	"Lead Design: ..."
softwareDevelopment	"Software Development: ..."
team	"Team: ..."
contributors	"Contributors: ..."
qualityAssurance	"Quality Assurance: ..."
graphicArts	"Graphic Arts: ..."
soundDesign	"Sound Design: ..."
thanks	Rendered last, under its own "Thanks!" heading, with extra spacing above it if any other field was present

Constructor

new CreditsNode( credits: CreditsData, options: CreditsNodeOptions )

Unlike most Node subclasses, options here is not optional — AboutDialog always passes at least a tandem.

Options

CreditsNodeOptions extends VBoxOptions with:

Option	Default	Effect
titleFont	18px bold PhetFont	Font for the "Credits" heading and the "Thanks!" heading
textFont	16px PhetFont	Font for every credits line

CreditsNode also defaults align: 'left', spacing: 1, and maxWidth: 550 (each line wraps via RichText's lineWrap at that width), and sets children internally.

Voicing and accessible structure come for free

Each credits line is a VoicingRichText/VoicingText, and the "Credits"/"Thanks!" headings are exposed as accessible headings (accessibleHeading) — using CreditsNode (via Sim's credits option) gets you PDOM structure and Voicing support without any extra accessibility work in sim code.