From 36952b29418cf6f9f3de6bd649d5cc3c466af4a3 Mon Sep 17 00:00:00 2001
From: Vaios Kalpias-Ilias <vaios@playcanvas.com>
Date: Fri, 22 Jan 2016 16:26:39 +0000
Subject: [PATCH] [FIX] Event handlers registered with 'once' called multiple
 times

---
 src/core/events.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/core/events.js b/src/core/events.js
index 9d9287319eb..193718366df 100644
--- a/src/core/events.js
+++ b/src/core/events.js
@@ -143,11 +143,14 @@ pc.events = function () {
                     args = pc.makeArray(arguments);
                     args.shift();
                     callbacks = this._callbacks[name].slice(); // clone list so that deleting inside callbacks works
+                    var originalIndex = 0;
                     for(index = 0; index < length; ++index) {
                         var scope = callbacks[index].scope;
                         callbacks[index].callback.apply(scope, args);
                         if (callbacks[index].callback.once) {
-                            this._callbacks[name].splice(index, 1);
+                            this._callbacks[name].splice(originalIndex, 1);
+                        } else {
+                            originalIndex++;
                         }
                     }
                 }