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game-maker / suite (push) Successful in 12m1s
Sounds follow the road fonts already paved: the file goes to the server content-addressed under its sha256, the project keeps a named asset that points at it, and nothing is ever re-encoded. The format is read from the file's own signature, not from what the browser claims - the same .m4a arrives as audio/mp4, audio/x-m4a or as nothing at all. Playing is two nodes. "Play sound" takes the asset and may raise or lower its volume; every call is its own voice, so two jumps in a row are two jumps heard. Its loop input is a choice of three - from the asset, on, off - because a checkbox has to spend one of its two positions on "not set" and would lose a case: an asset that loops could then never be played once. Below the graph core stays browser-free: NodeContext hands out an asset id, BehaviorSystem resolves it against the project and folds the asset's own volume and loop into the call, and only viewport/SoundLibrary knows about Web Audio. A run without a sink plays nothing instead of throwing. The CI browser is muted, so the ear is no witness: the debug hook counts started and stopped voices, and step 34 reads that counter.
42 lines
1.5 KiB
JavaScript
42 lines
1.5 KiB
JavaScript
import { spawn } from 'node:child_process';
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const FLAGS = [
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'--headless',
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'--hide-scrollbars',
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/**
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* Measured (idle editor, 20 s): software WebGL 373% of a core at 8 fps, HD 630 via ANGLE/Vulkan 69% at
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* 56 fps; no software fallback on purpose. `--use-angle=gl` and `--use-gl=egl` get no WebGL context at all.
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*/
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'--use-angle=vulkan',
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'--ignore-gpu-blocklist',
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'--enable-gpu',
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'--enable-features=Vulkan',
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// None of this serves a headless check, and its stderr was full of GCM sign-in retries.
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'--disable-background-networking',
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'--disable-sync',
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'--disable-extensions',
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'--no-first-run',
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// Nothing is meant to be heard here – but the sounds still have to *run*, or the sound checks
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// would be measuring a browser that refuses to start a voice rather than an editor that never
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// asked for one. Muted plus autoplay-allowed is exactly that: it plays, silently.
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'--mute-audio',
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'--autoplay-policy=no-user-gesture-required',
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];
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/** Starts chromium with the CDP port open; `proc.stderr` carries its last words. */
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export function launchBrowser({ port, width, height }) {
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const proc = spawn(
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'chromium',
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// --no-sandbox: this container runs as root, where chromium refuses to start otherwise.
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[
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...FLAGS,
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'--no-sandbox',
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`--remote-debugging-port=${port}`,
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`--window-size=${width},${height}`,
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'about:blank',
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],
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{ stdio: ['ignore', 'ignore', 'pipe'] },
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);
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return { proc, stop: () => proc.kill('SIGTERM'), where: 'local chromium' };
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}
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