softer failure sound for ui/learn

ui/learn/src/level.js

@@ -39,10 +39,6 @@ module.exports = function(blueprint, opts) {
   // cheat
   Mousetrap.bind(['shift+enter'], complete);
 
-  var failSoundOnce = function() {
-    sound.once('failure', opts.stage.key + '/' + blueprint.id);
-  };
-
   var assertData = function() {
     return {
       scenario: scenario,
@@ -53,7 +49,7 @@ module.exports = function(blueprint, opts) {
 
   var detectFailure = function() {
     var failed = blueprint.failure && blueprint.failure(assertData());
-    if (failed) failSoundOnce();
+    if (failed) sound.failure();
     return failed;
   };
 
@@ -70,7 +66,7 @@ module.exports = function(blueprint, opts) {
     vm.failed = true;
     ground.stop();
     ground.showCapture(move);
-    failSoundOnce();
+    sound.failure();
     return true;
   };
 
@@ -81,7 +77,7 @@ module.exports = function(blueprint, opts) {
     else { // moving into check
       vm.failed = true;
       ground.showCheckmate(chess);
-      failSoundOnce();
+      sound.failure();
       return m.redraw();
     }
     var took = false,

ui/learn/src/sound.js

@@ -15,8 +15,7 @@ var make = function(file, volume) {
   };
 };
 
-
-var sounds = {
+module.exports = {
   move: make('standard/Move'),
   take: make('sfx/Tournament3rd', 0.4),
   levelStart: make('other/ping'),
@@ -24,16 +23,5 @@ var sounds = {
   stageStart: make('other/guitar'),
   // stageEnd: make('sfx/Tournament1st'),
   stageEnd: make('other/gewonnen'),
-  failure: make('other/failure')
+  failure: make('other/no-go')
 };
-
-var onces = [];
-sounds.once = function(sound, id) {
-  var key = id + '/' + sound;
-  if (onces.indexOf(key) === -1) {
-    sounds[sound]();
-    onces.push(key);
-  }
-};
-
-module.exports = sounds;