Add volume control for loops

audio.js

@@ -1,5 +1,6 @@
 let playing = [];
 let looping = {};
+let loopGains = {};
 
 let waiting = {};
 
@@ -45,8 +46,8 @@ function playSfx(name) {
   src.start(0);
 }
 
-function playLoop(name) {
-  if (audioDict[name] == undefined) {
+function playLoop(name, volume=1) {
+  if (audioDict[name] === undefined) {
 
     if (waiting[name]) {
       waiting[name].push({
@@ -59,6 +60,8 @@ function playLoop(name) {
     console.error(name + " is not loaded yet, dingus");
     return;
   }
+  
+  loopGains[name].gain.value = volume;
 
   // if already playing, just keep going
   if (looping[name] && !looping[name].done) {
@@ -68,7 +71,8 @@ function playLoop(name) {
 
   let src = audioContext.createBufferSource();
   src.buffer = audioDict[name];
-  src.connect(gainControl);
+  src.connect(loopGains[name]);
+  loopGains[name].connect(gainControl);
 
   looping[name] = src;
 
@@ -132,6 +136,8 @@ function loadAudio(name, flush=false) {
     return;
   }
 
+  loopGains[name] = audioContext.createGain();
+
   waiting[name] = [];
 
   // is the audio already stored locally?