Add .opus and .m4a sounds

When passing multiple sounds to Howl it will automatically pick the first supported one [1]. Most browsers support .opus (Howl also does [2]) which is by far the smallest audio format. This reduces the audio from 1.8MB to 0.66MB. Safari doesn't support .opus so we can .m4a (AAC) for this. This still reduces the audio to 1.33MB. Commands to generate files: Convert `.mp3` to `.wav`: ``` sox bg_creepy.mp3 bg_creepy.wav ``` Convert `.wav` to `.opus`: ``` opusenc --discard-pictures --discard-comments --padding 0 --framesize 60 --bitrate 32 --music bg_creepy.wav bg_creepy.opus ``` Convert `.wav` to `.m4a`: ``` fdkaac -o bg_creepy.m4a bg_creepy.wav -b 64 ``` 1. https://github.com/goldfire/howler.js/#src-arraystring--required 2. https://github.com/goldfire/howler.js/blob/17c3d3d7aedc58f1d0ba1aa0fe94ddda6039e53a/src/howler.core.js#L277
poki · Jul 20, 2021 · 15c3295 · 15c3295
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commit 15c3295
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Showing 37 changed files with 6 additions and 2 deletions.
diff --git a/js/core/Game.js b/js/core/Game.js
@@ -147,7 +147,11 @@ Game.loadAssets = function(completeCallback, progressCallback, PRELOADER){
 
 		// Is MP3. Leave it to Howler.
 		if(src.slice(-4)==".mp3"){
-			var sound = new Howl({ src:[src] });
+			var sound = new Howl({ src:[
+				src.slice(0, src.length-4)+".opus",
+				src.slice(0, src.length-4)+".m4a",
+				src
+			] });
 			_soundsToLoad++;
 			sound.once('load', _onSoundLoad);
 			Game.sounds[key] = sound;
@@ -174,4 +178,4 @@ Game.addToManifest = function(keyValues, PRELOADER){
 	}
 };
 
-})(window);
+})(window);
diff --git a/sounds/bg_creepy.m4a b/sounds/bg_creepy.m4a
diff --git a/sounds/bg_creepy.opus b/sounds/bg_creepy.opus
diff --git a/sounds/bg_nighttime.m4a b/sounds/bg_nighttime.m4a
diff --git a/sounds/bg_nighttime.opus b/sounds/bg_nighttime.opus
diff --git a/sounds/bg_panic.m4a b/sounds/bg_panic.m4a
diff --git a/sounds/bg_panic.opus b/sounds/bg_panic.opus
diff --git a/sounds/bg_park.m4a b/sounds/bg_park.m4a
diff --git a/sounds/bg_park.opus b/sounds/bg_park.opus
diff --git a/sounds/breaking_news.m4a b/sounds/breaking_news.m4a
diff --git a/sounds/breaking_news.opus b/sounds/breaking_news.opus
diff --git a/sounds/cam_snap.m4a b/sounds/cam_snap.m4a
diff --git a/sounds/cam_snap.opus b/sounds/cam_snap.opus
diff --git a/sounds/crickets.m4a b/sounds/crickets.m4a
diff --git a/sounds/crickets.opus b/sounds/crickets.opus
diff --git a/sounds/gun_cock.m4a b/sounds/gun_cock.m4a
diff --git a/sounds/gun_cock.opus b/sounds/gun_cock.opus
diff --git a/sounds/gunshot.m4a b/sounds/gunshot.m4a
diff --git a/sounds/gunshot.opus b/sounds/gunshot.opus
diff --git a/sounds/impact.m4a b/sounds/impact.m4a
diff --git a/sounds/impact.opus b/sounds/impact.opus
diff --git a/sounds/peep_gasp.m4a b/sounds/peep_gasp.m4a
diff --git a/sounds/peep_gasp.opus b/sounds/peep_gasp.opus
diff --git a/sounds/peep_hmph.m4a b/sounds/peep_hmph.m4a
diff --git a/sounds/peep_hmph.opus b/sounds/peep_hmph.opus
diff --git a/sounds/peep_hngh.m4a b/sounds/peep_hngh.m4a
diff --git a/sounds/peep_hngh.opus b/sounds/peep_hngh.opus
diff --git a/sounds/peep_huh.m4a b/sounds/peep_huh.m4a
diff --git a/sounds/peep_huh.opus b/sounds/peep_huh.opus
diff --git a/sounds/scream.m4a b/sounds/scream.m4a
diff --git a/sounds/scream.opus b/sounds/scream.opus
diff --git a/sounds/shotgun.m4a b/sounds/shotgun.m4a
diff --git a/sounds/shotgun.opus b/sounds/shotgun.opus
diff --git a/sounds/shout.m4a b/sounds/shout.m4a
diff --git a/sounds/shout.opus b/sounds/shout.opus
diff --git a/sounds/squeak.m4a b/sounds/squeak.m4a
diff --git a/sounds/squeak.opus b/sounds/squeak.opus