Skip to content

No audio in WASM build#124

Description

@flydecahedron

Hello, first off, loving this library 馃檪

I'm struggling to get a wasm build that actually plays sounds. I'm not getting any errors or exceptions when using include_bytes! and a simple playing of a StaticSound that way. It is odd since I hear things fine for a desktop build, but not for wasm. Since I'm not getting any errors or panics from Kira while playing the sound, I'm wondering if this is an issue with something particular about my wasm build setup.

impl Audio {
    pub fn new() -> Self {
        let manager = AudioManager::<DefaultBackend>::new(AudioManagerSettings::default()).unwrap();
        Self {
            manager,
            sounds: HashMap::new(),
        }
    }

    pub fn play(&mut self, name: &str) -> StaticSoundHandle {
        let sound = self.sounds.get(name).expect("Sound not found");
        let snd = self.manager.play(sound.clone()).unwrap();

        snd
    }

    pub fn load_from_bytes(&mut self, name: &str) {
        let src = include_bytes!("../resources/candle_fire.wav").to_vec();
        let mut sound_bytes = vec![];
        for byte in src {
            sound_bytes.push(byte);
        }

        let sound = StaticSoundData::from_cursor(Cursor::new(sound_bytes))
            .expect("Failed to load sound file");
        self.sounds.insert(name.to_string(), sound);
    }
}
    gs.audio.load_from_bytes("candle");
    gs.audio.play("candle").set_volume(-6.0, Tween::default());
<html>
  <head>
    <meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
  </head>
  <body>
    <canvas id="canvas" width="640" height="480"></canvas>
    <script src="./rl.js"></script>
    <script>
      window.addEventListener("load", async () => {
        await wasm_bindgen("./rl_bg.wasm");
      });
    </script>
  </body>
</html>
cargo build --release --target wasm32-unknown-unknown
wasm-bindgen target/wasm32-unknown-unknown/release/rl.wasm --out-dir wasm --no-modules --no-typescript
[dependencies]
bracket-lib = { git = "https://github.com/amethyst/bracket-lib.git", rev = "851f6f08675444fb6fa088b9e67bee9fd75554c6", features = ["serde"] }
hecs = { version = "0.10.5", features = ["serde"] }
rhai = { version = "1.17.1", features = ["serde"] }
serde = { version = "1.0.217", features = ["derive"] }
getrandom = { version = "0.2.15", features = ["js"] }
wasm-bindgen = "0.2.100"
kira = "0.10.4"

[features]
default = []
dev = []  # Enable development mode with filesystem loading

# It's recommended to set the flag on a per-target basis:
[target.wasm32-unknown-unknown]
rustflags = ['--cfg', 'getrandom_backend="wasm_js"']

Thanks for looking!

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions