@needle-tools/engine/lib/engine/engine_modules.js

Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development with great integrations into editors like Unity or Blender - and can be deployed onto any device! It is flexible, extensible and networking and XR are built-in.

function createModule(loader) {
    const callbacks = [];
    const mod = {
        MODULE: undefined,
        MAYBEMODULE: null,
        /** Wait for the module to be loaded (doesn't trigger a load) */
        ready() {
            if (mod.MODULE)
                return Promise.resolve(mod.MODULE);
            return new Promise(resolve => { callbacks.push(resolve); });
        },
        /** Load the module */
        async load() {
            if (mod.MODULE)
                return mod.MODULE;
            const module = await loader();
            mod.MODULE = module;
            mod.MAYBEMODULE = module;
            for (const cb of callbacks)
                cb(module);
            callbacks.length = 0;
            return module;
        }
    };
    return mod;
}
/**
 * External dependencies that are loaded on demand either by the engine automatically when needed or they can be loaded manually by calling the `load` function.
 *
 * Use the `ready` function to wait for the module to be loaded if you do not wand to trigger a load.
 *
 * If a module is already loaded it's also available in the `MODULE` variable.
 */
export const MODULES = {
    MaterialX: createModule(() => import("@needle-tools/materialx")),
    RAPIER_PHYSICS: createModule(() => import("@dimforge/rapier3d-compat")),
    POSTPROCESSING: createModule(() => import("postprocessing")),
    POSTPROCESSING_AO: createModule(() => import("n8ao")),
};
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