axmol/extensions/Particle3D/PU/CCPUOnClearObserver.cpp

/****************************************************************************
 Copyright (C) 2013 Henry van Merode. All rights reserved.
 Copyright (c) 2015-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 https://adxeproject.github.io/

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#include "extensions/Particle3D/PU/CCPUOnClearObserver.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_CC_BEGIN

//-----------------------------------------------------------------------
void PUOnClearObserver::notifyStart()
{
    PUObserver::notifyStart();
    _continue = false;
}
//-----------------------------------------------------------------------
bool PUOnClearObserver::observe(PUParticle3D* /*particle*/, float /*timeElapsed*/)
{
    // This function always returns false, but is never called (but it must be implemented).
    return false;
}
//-----------------------------------------------------------------------
void PUOnClearObserver::updateObserver(PUParticle3D* /*particle*/, float /*timeElapsed*/, bool firstParticle)
{
    // Override the _processParticle() function, because we don't observe individual particles.
    if (firstParticle)
    {
        // Only continue to validate if there was at least 1 particle emitted, otherwise the event-
        // handlers are already called at the very start (when there are no particle yet).
        _continue = true;
    }
}
//-----------------------------------------------------------------------
void PUOnClearObserver::postUpdateObserver(float timeElapsed)
{
    if (_continue)
    {
        if (static_cast<PUParticleSystem3D*>(_particleSystem)->getAliveParticleCount() <= 0)
        {
            /** Handle the event. Use 0 as the particle pointer. This means that not all eventhandlers
                are suitable. If they expect a particle (and most eventhandlers do), it could
                result in an exception. Handlers such as the DoEnableComponentEventHandler and the
                DoStopSystemEventHandler however can be used without any problem.
            */
            handleEvent(0, timeElapsed);
            _continue = false;
        }
    }
}

PUOnClearObserver* PUOnClearObserver::create()
{
    auto pco = new PUOnClearObserver();
    pco->autorelease();
    return pco;
}

NS_CC_END