axmol/extensions/Particle3D/PU/CCPUDoScaleEventHandler.cpp

/****************************************************************************
 Copyright (C) 2013 Henry van Merode. All rights reserved.
 Copyright (c) 2015 Chukong Technologies Inc.
 
 http://www.cocos2d-x.org
 
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 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#include "extensions/Particle3D/PU/CCPUDoScaleEventHandler.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_CC_BEGIN

// Constants
const PUDoScaleEventHandler::ScaleType PUDoScaleEventHandler::DEFAULT_SCALE_TYPE = PUDoScaleEventHandler::ST_TIME_TO_LIVE;
const float PUDoScaleEventHandler::DEFAULT_SCALE_FRACTION = 0.2f;

//-----------------------------------------------------------------------
PUDoScaleEventHandler::PUDoScaleEventHandler(void) : 
    PUEventHandler(),
    _scaleFraction(DEFAULT_SCALE_FRACTION),
    _scaleType(DEFAULT_SCALE_TYPE)
{
}
//-----------------------------------------------------------------------
const PUDoScaleEventHandler::ScaleType& PUDoScaleEventHandler::getScaleType(void) const
{
    return _scaleType;
}
//-----------------------------------------------------------------------
void PUDoScaleEventHandler::setScaleType(const PUDoScaleEventHandler::ScaleType& scaleType)
{
    _scaleType = scaleType;
}
//-----------------------------------------------------------------------
float PUDoScaleEventHandler::getScaleFraction() const
{
    return _scaleFraction;
}
//-----------------------------------------------------------------------
void PUDoScaleEventHandler::setScaleFraction(const float scaleFraction)
{
    _scaleFraction = scaleFraction;
}
//-----------------------------------------------------------------------
void PUDoScaleEventHandler::handle (PUParticleSystem3D* /*particleSystem*/, PUParticle3D* particle, float timeElapsed)
{
    if (!particle)
        return;

    switch (_scaleType)
    {
    case ST_TIME_TO_LIVE:
        particle->timeToLive -= timeElapsed * _scaleFraction * particle->timeToLive;
        break;

    case ST_VELOCITY:
        particle->direction += timeElapsed * _scaleFraction * particle->direction;
        break;
    }
}

PUDoScaleEventHandler* PUDoScaleEventHandler::create()
{
    auto peh = new (std::nothrow) PUDoScaleEventHandler();
    peh->autorelease();
    return peh;
}

void PUDoScaleEventHandler::copyAttributesTo( PUEventHandler* eventHandler )
{
    PUEventHandler::copyAttributesTo(eventHandler);
    PUDoScaleEventHandler* doScaleEventHandler = static_cast<PUDoScaleEventHandler*>(eventHandler);
    doScaleEventHandler->setScaleFraction(_scaleFraction);
    doScaleEventHandler->setScaleType(_scaleType);
}

NS_CC_END