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|
use std::collections::HashMap;
#[cfg(target_arch = "wasm32")]
use std::cell::RefCell;
#[cfg(target_arch = "wasm32")]
pub struct Context {
pub audio: web_sys::AudioContext,
}
#[cfg(target_arch = "wasm32")]
impl Context {
pub fn new() -> Self {
let audio = web_sys::AudioContext::new()
.expect("failed to create audio context");
Self {
audio,
}
}
}
#[cfg(target_arch = "wasm32")]
pub struct Audio {
pub buffer: &'static RefCell<Option<web_sys::AudioBuffer>>,
//pub source: &'static web_sys::AudioBufferSourceNode,
}
#[cfg(target_arch = "wasm32")]
impl Audio {
pub fn new(ctx: &Context, bytes: &[u8]) -> Self {
let sbuffer: &_ = Box::leak(Box::new(RefCell::new(None)));
let sclone: &'static RefCell<Option<web_sys::AudioBuffer>> =
<&_>::clone(&sbuffer);
let ret = Audio {
buffer: sclone,
};
let jsp = ctx.audio.decode_audio_data(&js_sys::Uint8Array::from(bytes).buffer()).expect("failed to decode audio");
let promise = wasm_bindgen_futures::JsFuture::from(jsp);
wasm_bindgen_futures::spawn_local(async {
if let Some(data) = promise.await.ok() {
*sbuffer.borrow_mut() = Some(web_sys::AudioBuffer::from(data));
}
()
});
ret
}
pub fn play(&self, ctx: &Context, looping: Option<(Option<f64>, Option<f64>)>) -> Option<web_sys::AudioBufferSourceNode> {
let source = ctx.audio.create_buffer_source().ok()?;
source.set_buffer((&*self.buffer.borrow()).as_ref());
if let Some((ms, me)) = looping {
source.set_loop(true);
if let Some(s) = ms { source.set_loop_start(s) }
if let Some(e) = me { source.set_loop_end(e) }
}
source.connect_with_audio_node(&ctx.audio.destination()).ok()?;
source.start().ok()?;
Some(source)
}
}
#[cfg(target_arch = "wasm32")]
pub struct Assets {
pub ctx: Context,
pub audio: HashMap<String, Audio>,
pub music_node: Option<web_sys::AudioBufferSourceNode>,
}
#[cfg(target_arch = "wasm32")]
impl Assets {
pub fn new<F>(f : F) -> Self where F: Fn(&Context) -> HashMap<String, Audio> {
let ctx = Context::new();
let audio = f(&ctx);
Self {
ctx,
audio,
music_node: None,
}
}
pub fn play_sfx(&mut self, name: &str) {
if let Some(a) = self.audio.get(name) {
a.play(&self.ctx, None);
}
}
pub fn is_music_playing(&self) -> bool {
if let Some(ms) = &self.music_node {
ms.buffer().is_some()
} else { false }
}
pub fn play_music(&mut self, name: &str, start: Option<f64>, end: Option<f64>) {
if let Some(s) = &self.music_node {
let _ = s.stop();
}
if let Some(a) = self.audio.get(name) {
self.music_node = a.play(&self.ctx, Some((start, end)));
}
}
}
#[cfg(not(target_arch = "wasm32"))]
pub struct Context {
manager: kira::manager::AudioManager,
}
#[cfg(not(target_arch = "wasm32"))]
impl Context {
pub fn new() -> Self {
Self {
manager: kira::manager::AudioManager::new(kira::manager::AudioManagerSettings::default())
.expect("failed to create audio manager"),
}
}
}
#[cfg(not(target_arch = "wasm32"))]
pub struct Audio {
data: kira::sound::static_sound::StaticSoundData,
}
#[cfg(not(target_arch = "wasm32"))]
impl Audio {
pub fn new(_ctx: &Context, bytes: &'static [u8]) -> Self {
Self {
data: kira::sound::static_sound::StaticSoundData::from_cursor(std::io::Cursor::new(bytes))
.expect("failed to decode audio"),
}
}
pub fn play(
&self,
ctx: &mut Context,
looping: Option<(Option<f64>, Option<f64>)>
) -> Result<kira::sound::static_sound::StaticSoundHandle, String>
{
let sd = if let Some((ss, se)) = looping {
let start = if let Some(s) = ss { s } else { 0.0 };
if let Some(e) = se {
self.data.loop_region(start..e)
} else {
self.data.loop_region(start..)
}
} else {
self.data.clone()
};
match ctx.manager.play(sd) {
Ok(h) => Ok(h),
Err(e) => Err(e.to_string()),
}
}
}
#[cfg(not(target_arch = "wasm32"))]
pub struct Assets {
pub ctx: Context,
pub audio: HashMap<String, Audio>,
pub music_handle: Option<kira::sound::static_sound::StaticSoundHandle>,
}
#[cfg(not(target_arch = "wasm32"))]
impl Assets {
pub fn new<F>(f : F) -> Self where F: Fn(&Context) -> HashMap<String, Audio> {
let ctx = Context::new();
let audio = f(&ctx);
Self {
ctx,
audio,
music_handle: None,
}
}
pub fn play_sfx(&mut self, name: &str) {
if let Some(a) = self.audio.get(name) {
if let Err(e) = a.play(&mut self.ctx, None) {
log::warn!("failed to play sound {}: {}", name, e);
}
}
}
pub fn is_music_playing(&self) -> bool {
if let Some(mh) = &self.music_handle {
mh.state() == kira::sound::PlaybackState::Playing
} else { false }
}
pub fn play_music(&mut self, name: &str, start: Option<f64>, end: Option<f64>) {
if let Some(s) = &mut self.music_handle {
let _ = s.stop(kira::tween::Tween::default());
}
if let Some(a) = self.audio.get(name) {
match a.play(&mut self.ctx, Some((start, end))) {
Ok(h) => {
self.music_handle = Some(h);
},
Err(e) => {
log::warn!("failed to play music {}: {}", name, e);
}
}
}
}
}
|
