Java Script & Custom Action's Function isDone() Always Return False

[xiekang]

• cocos2d-x version:v3 v4
• devices test on:iphone7
• developing environments
  • NDK version:
  • Xcode version:10.1
  • VS version:
  • browser type and version:

Steps to Reproduce:

code in ActionInterval.cpp like this:
void ActionInterval::step(float dt)
{
if (_firstTick)
{
_firstTick = false;
_elapsed = 0;
}
else
{
_elapsed += dt;
}

float updateDt = std::max(0.0f,                                  // needed for rewind. elapsed could be negative
                          std::min(1.0f, _elapsed / _duration)
                          );

if (sendUpdateEventToScript(updateDt, this)) return;

this->update(updateDt);

_done = _elapsed >= _duration;

}

" if (sendUpdateEventToScript(updateDt, this)) return;"
Code in this line will always return if your project has bound to JS.
And _done will always be false. So ActionManager won't stop it naturally.
I have committed a pull request. #20394