From d46b3388df49da5aa8ce1f52dd2bd19a4c812467 Mon Sep 17 00:00:00 2001
From: PSteinhaus <philipp_steinhaus@web.de>
Date: Sat, 18 Sep 2021 10:30:11 +0200
Subject: [PATCH] added link to explanation on soundmixer creation; moved mixer
 creation in astroblasto to `key_down_event`;

---
 examples/05_astroblasto.rs | 5 +++--
 src/audio.rs               | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/examples/05_astroblasto.rs b/examples/05_astroblasto.rs
index d0a1471..2c79559 100644
--- 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
index 7e85c20..8a25c28 100644
--- 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() {