From a8a8ef85e62ae198831bfc40bf60a0f26a9bac3f Mon Sep 17 00:00:00 2001
From: minggo <ming@cocos2d-x.org>
Date: Thu, 17 Apr 2014 14:46:52 +0800
Subject: [PATCH] add comment for EventListenerTouchOneByOne::checkAvailable()

---
 cocos/2d/CCEventListenerTouch.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cocos/2d/CCEventListenerTouch.cpp b/cocos/2d/CCEventListenerTouch.cpp
index 2dbbbe8d41..4730cc7f60 100644
--- a/cocos/2d/CCEventListenerTouch.cpp
+++ b/cocos/2d/CCEventListenerTouch.cpp
@@ -82,6 +82,8 @@ EventListenerTouchOneByOne* EventListenerTouchOneByOne::create()
 
 bool EventListenerTouchOneByOne::checkAvailable()
 {
+    // EventDispatcher will use the return value of 'onTouchBegan' to determine whether to pass following 'move', 'end'
+    // message to 'EventListenerTouchOneByOne' or not. So 'onTouchBegan' needs to be set.
     if (onTouchBegan == nullptr)
     {
         CCASSERT(false, "Invalid EventListenerTouchOneByOne!");