axmol/extensions/Particle3D/PU/CCPUOnCountObserver.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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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

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 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "extensions/Particle3D/PU/CCPUOnCountObserver.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_CC_BEGIN

// Constants
const unsigned int PUOnCountObserver::DEFAULT_THRESHOLD        = 0;
const PUComparisionOperator PUOnCountObserver::DEFAULT_COMPARE = CO_LESS_THAN;

//-----------------------------------------------------------------------
PUOnCountObserver::PUOnCountObserver()
    : PUObserver(), _count(1), _threshold(DEFAULT_THRESHOLD), _compare(DEFAULT_COMPARE)
{}
//-----------------------------------------------------------------------
void PUOnCountObserver::notifyStart()
{
    PUObserver::notifyStart();

    // At a restart the counter must be reset again.
    _count = 1;
}
//-----------------------------------------------------------------------
bool PUOnCountObserver::observe(PUParticle3D* particle, float /*timeElapsed*/)
{
    if (!particle)
        return false;

    if (!particle->hasEventFlags(PUParticle3D::PEF_EMITTED))
        return false;

    if (_compare == CO_GREATER_THAN)
    {
        if (_count > _threshold)
        {
            return true;
        }
        else
        {
            _count++;
            return false;
        }
    }
    else if (_compare == CO_LESS_THAN)
    {
        if (_count < _threshold)
        {
            _count++;
            return true;
        }
        else
        {
            return false;
        }
    }
    else
    {
        if (_count == _threshold)
        {
            _count++;
            return true;
        }
        else
        {
            _count++;
            return false;
        }
    }

    return false;
}

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

void PUOnCountObserver::copyAttributesTo(PUObserver* observer)
{
    PUObserver::copyAttributesTo(observer);

    PUOnCountObserver* onCountObserver = static_cast<PUOnCountObserver*>(observer);
    onCountObserver->_count            = _count;
    onCountObserver->_threshold        = _threshold;
    onCountObserver->_compare          = _compare;
}

NS_CC_END