@woosh/meep-engine/src/engine/graphics/util/promiseTextureLoaded.js

Pure JavaScript game engine. Fully featured and production ready.

/**
 *
 * @param {Texture} t
 * @returns {Promise<Texture>}
 */
function promiseTextureLoaded(t) {
    return new Promise(function (resolve, reject) {
        let image = t.image;
        if (image === undefined) {
            //FIXME this is not a pleasant logic which should be replaced. THREE.js v75 (current) does not offer a better way.
            Object.defineProperty(t, 'image', {
                set: function (i) {
                    image = i;
                    resolve();
                },
                get: function () {
                    return image;
                }
            });
        } else if (image.complete) {
            resolve(t);
        } else if (typeof image.addEventListener === "function") {
            image.addEventListener('load', resolve);
            image.addEventListener('error', reject);
        } else {
            resolve();
        }
    })
}

export { promiseTextureLoaded };