added link to explanation on soundmixer creation;

moved mixer creation in astroblasto to `key_down_event`;
ggez · Sep 18, 2021 · d46b338 · d46b338
1 parent ba714e6
commit d46b338
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/examples/05_astroblasto.rs b/examples/05_astroblasto.rs
@@ -351,8 +351,6 @@ impl MainState {
             game_over: false,
         };
 
-        audio::maybe_create_soundmixer(ctx);
-
         Ok(s)
     }
 
@@ -600,6 +598,9 @@ impl EventHandler<ggez::GameError> for MainState {
         _keymod: KeyMods,
         _repeat: bool,
     ) {
+        // creating the mixer on user interaction might be necessary for web
+        audio::maybe_create_soundmixer(ctx);
+
         match keycode {
             KeyCode::Up => {
                 self.input.yaxis = 1.0;

diff --git a/src/audio.rs b/src/audio.rs
@@ -92,7 +92,7 @@ impl Source {
 }
 
 /// This function should be called in one of the interaction event callbacks before any usages of audio
-/// Because web.
+/// Because web: https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Best_practices
 pub fn maybe_create_soundmixer(ctx: &mut Context) {
     let mut mixer = ctx.audio_context.mixer.borrow_mut();
     if mixer.is_none() {