@g20/player/dist/system/index.js

Window Animation Frame Player

/**
* @g20/player 1.0.0-alpha.46
* (c) David Geo Holmes david.geo.holmes@gmail.com
* Released under the MIT License.
*/
System.register(['@g20/reactive'], (function (exports) {
    'use strict';
    var effect;
    return {
        setters: [function (module) {
            effect = module.effect;
        }],
        execute: (function () {

            class Player {
                #board;
                #frameCount;
                /**
                 * The handle of the last frame requested.
                 */
                #handle = null;
                constructor(board, callback) {
                    this.#board = board;
                    this.#frameCount = effect(() => {
                        callback(board.frameCount);
                    });
                }
                dispose() {
                    if (this.#frameCount) {
                        this.#frameCount.dispose();
                    }
                }
                play() {
                    // eslint-disable-next-line @typescript-eslint/no-unused-vars
                    const animate = (timestamp) => {
                        this.#handle = null;
                        this.#board.update();
                        this.#handle = window.requestAnimationFrame(animate);
                    };
                    this.#handle = window.requestAnimationFrame(animate);
                }
                pause() {
                    if (typeof this.#handle === "number") {
                        window.cancelAnimationFrame(this.#handle);
                        this.#handle = null;
                    }
                }
            } exports("Player", Player);

        })
    };
}));
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