examples/flappy: Audio not working on Wasm/Firefox

[johanbrandhorst]

Ebitengine Version

v2.7.2

Operating System

• Windows
• macOS
• Linux
• FreeBSD
• OpenBSD
• Android
• iOS
• Nintendo Switch
• PlayStation 5
• Xbox
• Web Browsers

Go Version (go version)

go version go1.22.0 linux/arm64

What steps will reproduce the problem?

Build the flappy example for Wasm:

$ GOOS=js GOARCH=wasm go build -o flappy.wasm ./examples/flappy/

Execute in the browser

What is the expected result?

Flappy gopher with sound is playing

What happens instead?

Flappy gopher without sound is playing

Anything else you feel useful to add?

I see a console warning:

An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page.

Seems very suspicious.

[hajimehoshi]

I failed to reproduce the issue. https://ebitengine.org/en/examples/flappy.html worked with audio.

[johanbrandhorst]

That page works for me, and I finally got it to work sometimes locally. I can't tell what it was that made it work, but it seems... temperamental. I'll close this for now and let you know if I can establish a pattern. Thank!

[hajimehoshi]

Thanks! Feel free to reopen this when you find this issue often happens again.