first draft for sound preloading

feat: add loader bar to animate loading state

CONTRIBUTING.md

@@ -123,7 +123,14 @@ To publish all packages that have been changed since the last release, run:
 
 ```sh
 npm login
-npx lerna publish
+
+# this will increment all the versions in package.json files of non private packages to selected versions
+npx lerna version --no-private
+
+# publish all packages inside /packages using pnpm! don't use lerna to publish!!
+pnpm --filter "./packages/**" publish --dry-run
+
+# the last command was only a dry-run, make sure everything looks ok, if yes, run the same command without flag
 ```
 
 To manually publish a single package, increase the version in the `package.json`, then run `pnpm publish`.

packages/core/repl.mjs

@@ -41,24 +41,13 @@ export function repl({
       throw new Error('no code to evaluate');
     }
     try {
-      beforeEval?.({ code });
+      await beforeEval?.({ code });
-      scheduler.setCps(1); // reset cps in case the code does not contain a setCps call
-      // problem: when the code does contain a setCps after an awaited promise,
-      // the cps will be 1 until the promise resolves
-      // example:
-      /*
-      await new Promise(resolve => setTimeout(resolve,1000))
-      setCps(.5)
-      note("c a f e")
-      */
-      // to make sure the setCps inside the code is called immediately,
-      // it has to be placed first
       let { pattern } = await _evaluate(code, transpiler);
 
       logger(`[eval] code updated`);
       pattern = editPattern?.(pattern) || pattern;
+      await afterEval?.({ code, pattern });
       scheduler.setPattern(pattern, autostart);
-      afterEval?.({ code, pattern });
       return pattern;
     } catch (err) {
       // console.warn(`[repl] eval error: ${err.message}`);

packages/react/src/components/MiniRepl.jsx

@@ -82,7 +82,7 @@ export function MiniRepl({
               e.preventDefault();
               flash(view);
               await activateCode();
-            } else if (e.code === 'Period') {
+            } else if (e.key === '.') {
               stop();
               e.preventDefault();
             }
@@ -93,26 +93,6 @@ export function MiniRepl({
     ),
   );
 
-  // set active pattern on ctrl+enter
-  useLayoutEffect(() => {
-    if (enableKeyboard) {
-      const handleKeyPress = async (e) => {
-        if (e.ctrlKey || e.altKey) {
-          if (e.code === 'Enter') {
-            e.preventDefault();
-            flash(view);
-            await activateCode();
-          } else if (e.code === 'Period') {
-            stop();
-            e.preventDefault();
-          }
-        }
-      };
-      window.addEventListener('keydown', handleKeyPress, true);
-      return () => window.removeEventListener('keydown', handleKeyPress, true);
-    }
-  }, [enableKeyboard, pattern, code, evaluate, stop, view]);
-
   const [log, setLog] = useState([]);
   useLogger(
     useCallback((e) => {

packages/react/src/hooks/useStrudel.mjs

@@ -46,17 +46,17 @@ function useStrudel({
         drawContext,
         transpiler,
         editPattern,
-        beforeEval: ({ code }) => {
+        beforeEval: async ({ code }) => {
           setCode(code);
-          beforeEval?.();
+          await beforeEval?.();
         },
-        afterEval: (res) => {
+        afterEval: async (res) => {
           const { pattern: _pattern, code } = res;
           setActiveCode(code);
           setPattern(_pattern);
           setEvalError();
           setSchedulerError();
-          afterEval?.(res);
+          await afterEval?.(res);
         },
         onToggle: (v) => {
           setStarted(v);

packages/webaudio/webaudio.mjs

@@ -170,7 +170,7 @@ export const webaudioOutput = async (hap, deadline, hapDuration, cps) => {
     sourceNode = source(t, hap.value, hapDuration);
   } else if (getSound(s)) {
     const { onTrigger } = getSound(s);
-    const soundHandle = await onTrigger(t, hap.value, onended);
+    const soundHandle = await onTrigger(t, { ...hap.value, s }, onended);
     if (soundHandle) {
       sourceNode = soundHandle.node;
       soundHandle.stop(t + hapDuration);

website/src/pages/technical-manual/packages.mdx

@@ -58,5 +58,6 @@ These packages provide bindings for different ways to output strudel patterns:
 
 ## Tools
 
-- [pnpm workspaces](https://pnpm.io/)
+- [pnpm](https://pnpm.io/) for package management, workspaces and publishing
-- Publishing packages is done with [lerna](https://lerna.js.org/).
+- [lerna](https://lerna.js.org/) for bumping versions
+- see CONTRIBUTING.md for more info

website/src/repl/Loader.jsx

@@ -0,0 +1,13 @@
+import { cx } from '@strudel.cycles/react';
+import React from 'react';
+
+function Loader({ active }) {
+  return (
+    <div className="overflow-hidden opacity-50 fixed top-0 left-0 w-full z-[1000]">
+      <div className={cx('h-[2px] block w-full', active ? 'bg-foreground animate-train' : 'bg-transparent')}>
+        <div />
+      </div>
+    </div>
+  );
+}
+export default Loader;

website/src/repl/Repl.jsx

@@ -18,6 +18,7 @@ import * as tunes from './tunes.mjs';
 import PlayCircleIcon from '@heroicons/react/20/solid/PlayCircleIcon';
 import { themes } from './themes.mjs';
 import { settingsMap, useSettings, setLatestCode } from '../settings.mjs';
+import Loader from './Loader';
 
 const { latestCode } = settingsMap.get();
 
@@ -42,7 +43,7 @@ const modules = [
   import('@strudel.cycles/csound'),
 ];
 
-evalScope(
+const modulesLoading = evalScope(
   controls, // sadly, this cannot be exported from core direclty
   ...modules,
 );
@@ -102,7 +103,7 @@ export function Repl({ embedded = false }) {
   const isEmbedded = embedded || window.location !== window.parent.location;
   const [view, setView] = useState(); // codemirror view
   const [lastShared, setLastShared] = useState();
-  const [pending, setPending] = useState(false);
+  const [pending, setPending] = useState(true);
 
   const { theme, keybindings, fontSize, fontFamily } = useSettings();
 
@@ -111,16 +112,45 @@ export function Repl({ embedded = false }) {
       initialCode: '// LOADING',
       defaultOutput: webaudioOutput,
       getTime,
-      beforeEval: () => {
+      beforeEval: async () => {
+        setPending(true);
+        await modulesLoading;
         cleanupUi();
         cleanupDraw();
-        setPending(true);
       },
-      afterEval: ({ code }) => {
+      afterEval: async ({ code, pattern }) => {
+        // preload sounds
+        const t = scheduler.getTime();
+        const lookahead = 16;
+        const upcoming = pattern
+          .queryArc(t, t + lookahead)
+          .filter((h) => h.value.s)
+          .map((h) => `${h.value.bank ? `${h.value.bank}_` : ''}${h.value.s}:${h.value.n || 0}`)
+          .filter((v, i, all) => all.indexOf(v) === i);
+        // console.log('now preloading sounds:', upcoming);
+        const preload = upcoming.map(async (v) => {
+          const [s, n] = v.split(':');
+          const sound = soundMap.value[s];
+          if (!sound) {
+            throw new Error(`[preload] error: sound not found: "${s}:${n}"`);
+          }
+          // TODO: only preload if not already preloaded...
+          // TODO: add sound.preload interface that only loads the sample, without creating a buffersource
+          return sound.onTrigger(getAudioContext().currentTime + 0.5, { s, n }, () => {
+            // console.log('onended');
+          });
+        });
+        await Promise.all(preload);
+        // console.log('preloading done');
+
         setPending(false);
         setLatestCode(code);
         window.location.hash = '#' + encodeURIComponent(btoa(code));
       },
+      onEvalError: (err) => {
+        console.log('errr');
+        setPending(false);
+      },
       onToggle: (play) => !play && cleanupDraw(false),
       drawContext,
     });
@@ -135,6 +165,7 @@ export function Repl({ embedded = false }) {
         'highlight',
       );
       setCode(decoded || latestCode || randomTune);
+      setPending(false);
     });
   }, []);
 
@@ -144,10 +175,14 @@ export function Repl({ embedded = false }) {
       async (e) => {
         if (e.ctrlKey || e.altKey) {
           if (e.code === 'Enter') {
+            if (getAudioContext().state !== 'running') {
+              alert('please click play to initialize the audio. you can use shortcuts after that!');
+              return;
+            }
             e.preventDefault();
             flash(view);
             await activateCode();
-          } else if (e.code === 'Period') {
+          } else if (e.key === '.') {
             stop();
             e.preventDefault();
           }
@@ -200,6 +235,7 @@ export function Repl({ embedded = false }) {
     logger(`[repl] ✨ loading random tune "${name}"`);
     clearCanvas();
     resetLoadedSounds();
+    scheduler.setCps(1);
     await prebake(); // declare default samples
     await evaluate(code, false);
   };
@@ -253,6 +289,7 @@ export function Repl({ embedded = false }) {
           //        'bg-gradient-to-t from-green-900 to-slate-900', //
         )}
       >
+        <Loader active={pending} />
         <Header context={context} />
         <section className="grow flex text-gray-100 relative overflow-auto cursor-text pb-0" id="code">
           <CodeMirror

website/tailwind.config.cjs

@@ -10,6 +10,15 @@ module.exports = {
   ],
   theme: {
     extend: {
+      keyframes: {
+        train: {
+          '0%': { transform: 'translateX(-100%)' },
+          '100%': { transform: 'translateX(100%)' },
+        },
+      },
+      animation: {
+        train: 'train 2s linear infinite',
+      },
       colors: {
         // codemirror-theme settings
         background: 'var(--background)',