Added old files

sources/scripts/speaker.js

@@ -0,0 +1,28 @@
+'use strict'
+
+function Speaker () {
+  this.effect = new Audio()
+
+  this.audio_catalog = {}
+
+  this.is_muted = false
+
+  this.play_effect = function (name) {
+    this.effect = this.load(name, 'effect', `media/audio/effect/${name}.ogg`)
+    this.effect.play()
+  }
+
+  this.load = function (name, role, src, loop = false) {
+    const audio_id = role + '_' + name
+    if (!(audio_id in this.audio_catalog)) {
+      const audio = new Audio()
+      audio.name = name
+      audio.src = src
+      audio.loop = loop
+      audio.mute = 'muted'
+      this.audio_catalog[audio_id] = audio
+    }
+    this.audio_catalog[audio_id].currentTime = 0
+    return this.audio_catalog[audio_id]
+  }
+}