axmol/extensions/Particle3D/PU/CCPUOnClearObserver.cpp

/****************************************************************************
 Copyright (C) 2013 Henry van Merode. All rights reserved.
 Copyright (c) 2015-2017 Chukong Technologies Inc.
 
 http://www.cocos2d-x.org
 
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "extensions/Particle3D/PU/CCPUOnClearObserver.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_CC_BEGIN

//-----------------------------------------------------------------------
void PUOnClearObserver::notifyStart (void)
{
    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 (std::nothrow) PUOnClearObserver();
    pco->autorelease();
    return pco;
}

NS_CC_END