From a5c81f10e80c725d3ae5b50fa6f0d034476bacf8 Mon Sep 17 00:00:00 2001
From: jorsi <jonathon.orsi@gmail.com>
Date: Thu, 4 Jun 2020 15:52:15 -0400
Subject: [PATCH] prevent same sound from playing multiple times

---
 script/audio.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/script/audio.js b/script/audio.js
index f6a85ed..2de373a 100644
--- a/script/audio.js
+++ b/script/audio.js
@@ -51,9 +51,21 @@ var AudioEngine = {
     },
     _playSound: function (buffer) {
         if (!AudioEngine._canPlayAudio()) return;
+        if (AudioEngine._currentSoundEffectAudio &&
+            AudioEngine._currentSoundEffectAudio.source.buffer == buffer) {
+            return;
+        }
 
         var source = AudioEngine._audioContext.createBufferSource();
         source.buffer = buffer;
+        source.onended = function(event) {
+            // dereference current sound effect when finished
+            if (AudioEngine._currentSoundEffectAudio &&
+                AudioEngine._currentSoundEffectAudio.source.buffer == buffer) {
+                AudioEngine._currentSoundEffectAudio = null;
+            }
+        };
+
         source.connect(AudioEngine._master);
         source.start();