#include "ParticleTest.h"
#include "../testResource.h"

enum {
    kTagParticleCount = 1,
};

Layer* nextParticleAction();
Layer* backParticleAction();
Layer* restartParticleAction();

//------------------------------------------------------------------
//
// DemoFirework
//
//------------------------------------------------------------------
void DemoFirework::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleFireworks::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars1) );

    setEmitterPosition();
}

std::string DemoFirework::subtitle() const
{
    return "ParticleFireworks";
}


//------------------------------------------------------------------
//
// DemoFire
//
//------------------------------------------------------------------
void DemoFire::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleFire::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );//.pvr");
    auto p = _emitter->getPosition();
    _emitter->setPosition( Vec2(p.x, 100) );

    setEmitterPosition();
}

std::string DemoFire::subtitle() const
{
    return "ParticleFire";
}

//------------------------------------------------------------------
//
// DemoSun
//
//------------------------------------------------------------------
void DemoSun::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleSun::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    setEmitterPosition();
}

std::string DemoSun::subtitle() const
{
    return "ParticleSun";
}

//------------------------------------------------------------------
//
// DemoGalaxy
//
//------------------------------------------------------------------
void DemoGalaxy::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleGalaxy::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    setEmitterPosition();
}

std::string DemoGalaxy::subtitle() const
{
    return "ParticleGalaxy";
}

//------------------------------------------------------------------
//
// DemoFlower
//
//------------------------------------------------------------------
void DemoFlower::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleFlower::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars1) );

    setEmitterPosition();
}

std::string DemoFlower::subtitle() const
{
    return "ParticleFlower";
}

//------------------------------------------------------------------
//
// DemoBigFlower
//
//------------------------------------------------------------------
void DemoBigFlower::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleSystemQuad::createWithTotalParticles(50);
    _emitter->retain();

    _background->addChild(_emitter, 10);
    ////_emitter->release();    // win32 :  use this line or remove this line and use autorelease()
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars1) );

    _emitter->setDuration(-1);

    // gravity
    _emitter->setGravity(Vec2::ZERO);

    // angle
    _emitter->setAngle(90);
    _emitter->setAngleVar(360);

    // speed of particles
    _emitter->setSpeed(160);
    _emitter->setSpeedVar(20);

    // radial
    _emitter->setRadialAccel(-120);
    _emitter->setRadialAccelVar(0);

    // tagential
    _emitter->setTangentialAccel(30);
    _emitter->setTangentialAccelVar(0);

    // emitter position
    _emitter->setPosition( Vec2(160,240) );
    _emitter->setPosVar(Vec2::ZERO);

    // life of particles
    _emitter->setLife(4);
    _emitter->setLifeVar(1);

    // spin of particles
    _emitter->setStartSpin(0);
    _emitter->setStartSizeVar(0);
    _emitter->setEndSpin(0);
    _emitter->setEndSpinVar(0);

    // color of particles
    Color4F startColor(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColor(startColor);

    Color4F startColorVar(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColorVar(startColorVar);

    Color4F endColor(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColor(endColor);

    Color4F endColorVar(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColorVar(endColorVar);

    // size, in pixels
    _emitter->setStartSize(80.0f);
    _emitter->setStartSizeVar(40.0f);
    _emitter->setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

    // emits per second
    _emitter->setEmissionRate(_emitter->getTotalParticles()/_emitter->getLife());

    // additive
    _emitter->setBlendAdditive(true);

    setEmitterPosition();
}

std::string DemoBigFlower::subtitle() const
{
    return "ParticleBigFlower";
}

//------------------------------------------------------------------
//
// DemoRotFlower
//
//------------------------------------------------------------------
void DemoRotFlower::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleSystemQuad::createWithTotalParticles(300);
    _emitter->retain();

    _background->addChild(_emitter, 10);
    ////_emitter->release();    // win32 : Remove this line
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars2) );

    // duration
    _emitter->setDuration(-1);

    // gravity
    _emitter->setGravity(Vec2::ZERO);

    // angle
    _emitter->setAngle(90);
    _emitter->setAngleVar(360);

    // speed of particles
    _emitter->setSpeed(160);
    _emitter->setSpeedVar(20);

    // radial
    _emitter->setRadialAccel(-120);
    _emitter->setRadialAccelVar(0);

    // tagential
    _emitter->setTangentialAccel(30);
    _emitter->setTangentialAccelVar(0);

    // emitter position
    _emitter->setPosition( Vec2(160,240) );
    _emitter->setPosVar(Vec2::ZERO);

    // life of particles
    _emitter->setLife(3);
    _emitter->setLifeVar(1);

    // spin of particles
    _emitter->setStartSpin(0);
    _emitter->setStartSpinVar(0);
    _emitter->setEndSpin(0);
    _emitter->setEndSpinVar(2000);

    // color of particles
    Color4F startColor(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColor(startColor);

    Color4F startColorVar(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColorVar(startColorVar);

    Color4F endColor(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColor(endColor);

    Color4F endColorVar(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColorVar(endColorVar);

    // size, in pixels
    _emitter->setStartSize(30.0f);
    _emitter->setStartSizeVar(00.0f);
    _emitter->setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

    // emits per second
    _emitter->setEmissionRate(_emitter->getTotalParticles()/_emitter->getLife());

    // additive
    _emitter->setBlendAdditive(false);

    setEmitterPosition();
}

std::string DemoRotFlower::subtitle() const
{
    return "ParticleRotFlower";
}

//------------------------------------------------------------------
//
// DemoMeteor
//
//------------------------------------------------------------------
void DemoMeteor::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleMeteor::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    setEmitterPosition();
}

std::string DemoMeteor::subtitle() const
{
    return "ParticleMeteor";
}

//------------------------------------------------------------------
//
// DemoSpiral
//
//------------------------------------------------------------------
void DemoSpiral::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleSpiral::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    setEmitterPosition();
}

std::string DemoSpiral::subtitle() const
{
    return "ParticleSpiral";
}

//------------------------------------------------------------------
//
// DemoExplosion
//
//------------------------------------------------------------------
void DemoExplosion::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleExplosion::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars1) );

    _emitter->setAutoRemoveOnFinish(true);

    setEmitterPosition();
}

std::string DemoExplosion::subtitle() const
{
    return "ParticleExplosion";
}

//------------------------------------------------------------------
//
// DemoSmoke
//
//------------------------------------------------------------------
void DemoSmoke::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleSmoke::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    auto p = _emitter->getPosition();
    _emitter->setPosition( Vec2( p.x, 100) );

    setEmitterPosition();
}

std::string DemoSmoke::subtitle() const
{
    return "ParticleSmoke";
}

//------------------------------------------------------------------
//
// DemoSnow
//
//------------------------------------------------------------------
void DemoSnow::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleSnow::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    auto p = _emitter->getPosition();
    _emitter->setPosition( Vec2( p.x, p.y-110) );
    _emitter->setLife(3);
    _emitter->setLifeVar(1);

    // gravity
    _emitter->setGravity(Vec2(0,-10));

    // speed of particles
    _emitter->setSpeed(130);
    _emitter->setSpeedVar(30);


    Color4F startColor = _emitter->getStartColor();
    startColor.r = 0.9f;
    startColor.g = 0.9f;
    startColor.b = 0.9f;
    _emitter->setStartColor(startColor);

    Color4F startColorVar = _emitter->getStartColorVar();
    startColorVar.b = 0.1f;
    _emitter->setStartColorVar(startColorVar);

    _emitter->setEmissionRate(_emitter->getTotalParticles()/_emitter->getLife());

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_snow) );

    setEmitterPosition();
}

std::string DemoSnow::subtitle() const
{
    return "ParticleSnow";
}

//------------------------------------------------------------------
//
// DemoRain
//
//------------------------------------------------------------------
void DemoRain::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleRain::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);

    auto p = _emitter->getPosition();
    _emitter->setPosition( Vec2( p.x, p.y-100) );
    _emitter->setLife(4);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    setEmitterPosition();
}

std::string DemoRain::subtitle() const
{
    return "ParticleRain";
}

//------------------------------------------------------------------
//
// DemoModernArt
//
//------------------------------------------------------------------
void DemoModernArt::onEnter()
{
    ParticleDemo::onEnter();

//FIXME: If use ParticleSystemPoint, bada 1.0 device will crash.
//  Crash place: ParticleSystemPoint.cpp Line 149, function: glDrawArrays(GL_POINTS, 0, _particleIdx);
    _emitter = ParticleSystemQuad::createWithTotalParticles(1000);
    _emitter->retain();

    _background->addChild(_emitter, 10);
    ////_emitter->release();

    auto s = Director::getInstance()->getWinSize();

    // duration
    _emitter->setDuration(-1);

    // gravity
    _emitter->setGravity(Vec2(0,0));

    // angle
    _emitter->setAngle(0);
    _emitter->setAngleVar(360);

    // radial
    _emitter->setRadialAccel(70);
    _emitter->setRadialAccelVar(10);

    // tagential
    _emitter->setTangentialAccel(80);
    _emitter->setTangentialAccelVar(0);

    // speed of particles
    _emitter->setSpeed(50);
    _emitter->setSpeedVar(10);

    // emitter position
    _emitter->setPosition( Vec2( s.width/2, s.height/2) );
    _emitter->setPosVar(Vec2::ZERO);

    // life of particles
    _emitter->setLife(2.0f);
    _emitter->setLifeVar(0.3f);

    // emits per frame
    _emitter->setEmissionRate(_emitter->getTotalParticles()/_emitter->getLife());

    // color of particles
    Color4F startColor(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColor(startColor);

    Color4F startColorVar(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColorVar(startColorVar);

    Color4F endColor(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColor(endColor);

    Color4F endColorVar(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColorVar(endColorVar);

    // size, in pixels
    _emitter->setStartSize(1.0f);
    _emitter->setStartSizeVar(1.0f);
    _emitter->setEndSize(32.0f);
    _emitter->setEndSizeVar(8.0f);

    // texture
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    // additive
    _emitter->setBlendAdditive(false);

    setEmitterPosition();
}

std::string DemoModernArt::subtitle() const
{
    return "Varying size";
}

//------------------------------------------------------------------
//
// DemoRing
//
//------------------------------------------------------------------
void DemoRing::onEnter()
{
    ParticleDemo::onEnter();

    _emitter = ParticleFlower::create();
    _emitter->retain();

    _background->addChild(_emitter, 10);

    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars1) );
    _emitter->setLifeVar(0);
    _emitter->setLife(10);
    _emitter->setSpeed(100);
    _emitter->setSpeedVar(0);
    _emitter->setEmissionRate(10000);

    setEmitterPosition();
}

std::string DemoRing::subtitle() const
{
    return "Ring Demo";
}

//------------------------------------------------------------------
//
// ParallaxParticle
//
//------------------------------------------------------------------
void ParallaxParticle::onEnter()
{
    ParticleDemo::onEnter();

    _background->getParent()->removeChild(_background, true);
    _background = nullptr;

    auto p = ParallaxNode::create();
    addChild(p, 5);

    auto p1 = Sprite::create(s_back3);
    auto p2 = Sprite::create(s_back3);

    p->addChild( p1, 1, Vec2(0.5f,1), Vec2(0,250) );
    p->addChild(p2, 2, Vec2(1.5f,1), Vec2(0,50) );

    _emitter = ParticleFlower::create();
    _emitter->retain();
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    p1->addChild(_emitter, 10);
    _emitter->setPosition( Vec2(250,200) );

    auto par = ParticleSun::create();
    p2->addChild(par, 10);
    par->setTexture( Director::getInstance()->getTextureCache()->addImage(s_fire) );

    auto move = MoveBy::create(4, Vec2(300,0));
    auto move_back = move->reverse();
    auto seq = Sequence::create( move, move_back, nullptr);
    p->runAction(RepeatForever::create(seq));
}

std::string ParallaxParticle::subtitle() const
{
    return "Parallax + Particles";
}

//------------------------------------------------------------------
//
// RadiusMode1
//
//------------------------------------------------------------------
void RadiusMode1::onEnter()
{
    ParticleDemo::onEnter();

	_color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::createWithTotalParticles(200);
    _emitter->retain();
    addChild(_emitter, 10);
    _emitter->setTexture(Director::getInstance()->getTextureCache()->addImage("Images/stars-grayscale.png"));

    // duration
    _emitter->setDuration(ParticleSystem::DURATION_INFINITY);

    // radius mode
    _emitter->setEmitterMode(ParticleSystem::Mode::RADIUS);

    // radius mode: start and end radius in pixels
    _emitter->setStartRadius(0);
    _emitter->setStartRadiusVar(0);
    _emitter->setEndRadius(160);
    _emitter->setEndRadiusVar(0);

    // radius mode: degrees per second
    _emitter->setRotatePerSecond(180);
    _emitter->setRotatePerSecondVar(0);


    // angle
    _emitter->setAngle(90);
    _emitter->setAngleVar(0);

    // emitter position
    auto size = Director::getInstance()->getWinSize();
    _emitter->setPosition(Vec2(size.width/2, size.height/2));
    _emitter->setPosVar(Vec2::ZERO);

    // life of particles
    _emitter->setLife(5);
    _emitter->setLifeVar(0);

    // spin of particles
    _emitter->setStartSpin(0);
    _emitter->setStartSpinVar(0);
    _emitter->setEndSpin(0);
    _emitter->setEndSpinVar(0);

    // color of particles
    Color4F startColor(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColor(startColor);

    Color4F startColorVar(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColorVar(startColorVar);

    Color4F endColor(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColor(endColor);

    Color4F endColorVar(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColorVar(endColorVar);

    // size, in pixels
    _emitter->setStartSize(32);
    _emitter->setStartSizeVar(0);
    _emitter->setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

    // emits per second
    _emitter->setEmissionRate(_emitter->getTotalParticles() / _emitter->getLife());

    // additive
    _emitter->setBlendAdditive(false);
}

std::string RadiusMode1::subtitle() const
{
    return "Radius Mode: Spiral";
}

//------------------------------------------------------------------
//
// RadiusMode2
//
//------------------------------------------------------------------
void RadiusMode2::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::createWithTotalParticles(200);
    _emitter->retain();
    addChild(_emitter, 10);
    _emitter->setTexture(Director::getInstance()->getTextureCache()->addImage("Images/stars-grayscale.png"));

    // duration
    _emitter->setDuration(ParticleSystem::DURATION_INFINITY);

    // radius mode
    _emitter->setEmitterMode(ParticleSystem::Mode::RADIUS);

    // radius mode: start and end radius in pixels
    _emitter->setStartRadius(100);
    _emitter->setStartRadiusVar(0);
    _emitter->setEndRadius(ParticleSystem::START_RADIUS_EQUAL_TO_END_RADIUS);
    _emitter->setEndRadiusVar(0);

    // radius mode: degrees per second
    _emitter->setRotatePerSecond(45);
    _emitter->setRotatePerSecondVar(0);


    // angle
    _emitter->setAngle(90);
    _emitter->setAngleVar(0);

    // emitter position
    auto size = Director::getInstance()->getWinSize();
    _emitter->setPosition(Vec2(size.width/2, size.height/2));
    _emitter->setPosVar(Vec2::ZERO);

    // life of particles
    _emitter->setLife(4);
    _emitter->setLifeVar(0);

    // spin of particles
    _emitter->setStartSpin(0);
    _emitter->setStartSpinVar(0);
    _emitter->setEndSpin(0);
    _emitter->setEndSpinVar(0);

    // color of particles
    Color4F startColor(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColor(startColor);

    Color4F startColorVar(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColorVar(startColorVar);

    Color4F endColor(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColor(endColor);

    Color4F endColorVar(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColorVar(endColorVar);

    // size, in pixels
    _emitter->setStartSize(32);
    _emitter->setStartSizeVar(0);
    _emitter->setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

    // emits per second
    _emitter->setEmissionRate(_emitter->getTotalParticles() / _emitter->getLife());

    // additive
    _emitter->setBlendAdditive(false);
}

std::string RadiusMode2::subtitle() const
{
    return "Radius Mode: Semi Circle";
}

//------------------------------------------------------------------
//
// Issue704
//
//------------------------------------------------------------------
void Issue704::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::createWithTotalParticles(100);
    _emitter->retain();
    addChild(_emitter, 10);
    _emitter->setTexture(Director::getInstance()->getTextureCache()->addImage("Images/fire.png"));

    // duration
    _emitter->setDuration(ParticleSystem::DURATION_INFINITY);

    // radius mode
    _emitter->setEmitterMode(ParticleSystem::Mode::RADIUS);

    // radius mode: start and end radius in pixels
    _emitter->setStartRadius(50);
    _emitter->setStartRadiusVar(0);
    _emitter->setEndRadius(ParticleSystem::START_RADIUS_EQUAL_TO_END_RADIUS);
    _emitter->setEndRadiusVar(0);

    // radius mode: degrees per second
    _emitter->setRotatePerSecond(0);
    _emitter->setRotatePerSecondVar(0);


    // angle
    _emitter->setAngle(90);
    _emitter->setAngleVar(0);

    // emitter position
    auto size = Director::getInstance()->getWinSize();
    _emitter->setPosition(Vec2(size.width/2, size.height/2));
    _emitter->setPosVar(Vec2::ZERO);

    // life of particles
    _emitter->setLife(5);
    _emitter->setLifeVar(0);

    // spin of particles
    _emitter->setStartSpin(0);
    _emitter->setStartSpinVar(0);
    _emitter->setEndSpin(0);
    _emitter->setEndSpinVar(0);

    // color of particles
    Color4F startColor(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColor(startColor);

    Color4F startColorVar(0.5f, 0.5f, 0.5f, 1.0f);
    _emitter->setStartColorVar(startColorVar);

    Color4F endColor(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColor(endColor);

    Color4F endColorVar(0.1f, 0.1f, 0.1f, 0.2f);
    _emitter->setEndColorVar(endColorVar);

    // size, in pixels
    _emitter->setStartSize(16);
    _emitter->setStartSizeVar(0);
    _emitter->setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

    // emits per second
    _emitter->setEmissionRate(_emitter->getTotalParticles() / _emitter->getLife());

    // additive
    _emitter->setBlendAdditive(false);

    auto rot = RotateBy::create(16, 360);
    _emitter->runAction(RepeatForever::create(rot));
}

std::string Issue704::title() const
{
    return "Issue 704. Free + Rot";
}

std::string Issue704::subtitle() const
{
    return "Emitted particles should not rotate";
}

//------------------------------------------------------------------
//
// Issue870
//
//------------------------------------------------------------------
void Issue870::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::create("Particles/SpinningPeas.plist");
    _emitter->setTextureWithRect(Director::getInstance()->getTextureCache()->addImage("Images/particles.png"), Rect(0,0,32,32));
    addChild(_emitter, 10);
    _emitter->retain();

    _index = 0;
    schedule(CC_SCHEDULE_SELECTOR(Issue870::updateQuads), 2.0f);
}

void Issue870::updateQuads(float dt)
{
    _index = (_index + 1) % 4;
    auto rect = Rect(_index * 32, 0, 32, 32);
    auto system = (ParticleSystemQuad*)_emitter;
    system->setTextureWithRect(_emitter->getTexture(), rect);
}

std::string Issue870::title() const
{
    return "Issue 870. SubRect";
}

std::string Issue870::subtitle() const
{
    return "Every 2 seconds the particle should change";
}

//------------------------------------------------------------------
//
// DemoParticleFromFile
//
//------------------------------------------------------------------
void DemoParticleFromFile::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    std::string filename = "Particles/" + _title + ".plist";
    _emitter = ParticleSystemQuad::create(filename);
    _emitter->retain();
    addChild(_emitter, 10);

    setEmitterPosition();
}

//------------------------------------------------------------------
//
// ParticleDemo
//
//------------------------------------------------------------------

enum
{
    IDC_NEXT = 100,
    IDC_BACK,
    IDC_RESTART,
    IDC_TOGGLE
};

static int sceneIdx = -1;

Layer* createParticleLayer(int nIndex)
{
    switch(nIndex)
    {
        case 0: return new ParticleReorder();
        case 1: return new ParticleBatchHybrid();
        case 2: return new ParticleBatchMultipleEmitters();
        case 3: return new DemoFlower();
        case 4: return new DemoGalaxy();
        case 5: return new DemoFirework();
        case 6: return new DemoSpiral();
        case 7: return new DemoSun();
        case 8: return new DemoMeteor();
        case 9: return new DemoFire();
        case 10: return new DemoSmoke();
        case 11: return new DemoExplosion();
        case 12: return new DemoSnow();
        case 13: return new DemoRain();
        case 14: return new DemoBigFlower();
        case 15: return new DemoRotFlower();
        case 16: return new DemoModernArt();
        case 17: return new DemoRing();
        case 18: return new ParallaxParticle();
        case 19: return new DemoParticleFromFile("BoilingFoam");
        case 20: return new DemoParticleFromFile("BurstPipe");
        case 21: return new DemoParticleFromFile("Comet");
        case 22: return new DemoParticleFromFile("debian");
        case 23: return new DemoParticleFromFile("ExplodingRing");
        case 24: return new DemoParticleFromFile("LavaFlow");
        case 25: return new DemoParticleFromFile("SpinningPeas");
        case 26: return new DemoParticleFromFile("SpookyPeas");
        case 27: return new DemoParticleFromFile("Upsidedown");
        case 28: return new DemoParticleFromFile("Flower");
        case 29: return new DemoParticleFromFile("Spiral");
        case 30: return new DemoParticleFromFile("Galaxy");
        case 31: return new DemoParticleFromFile("Phoenix");
        case 32: return new DemoParticleFromFile("lines");
        case 33: return new DemoParticleFromFile("ButterFly");
        case 34: return new DemoParticleFromFile("ButterFlyYFlipped");
        case 35: return new RadiusMode1();
        case 36: return new RadiusMode2();
        case 37: return new Issue704();
        case 38: return new Issue870();
        case 39: return new Issue1201();
        // v1.1 tests
        case 40: return new MultipleParticleSystems();
        case 41: return new MultipleParticleSystemsBatched();
        case 42: return new AddAndDeleteParticleSystems();
        case 43: return new ReorderParticleSystems();
        case 44: return new PremultipliedAlphaTest();
        case 45: return new PremultipliedAlphaTest2();
        case 46: return new Issue3990();
        case 47: return new ParticleAutoBatching();
        case 48: return new ParticleVisibleTest();
        case 49: return new ParticleResetTotalParticles();
        default:
            break;
    }

    return nullptr;
}
#define MAX_LAYER    50


Layer* nextParticleAction()
{
    sceneIdx++;
    sceneIdx = sceneIdx % MAX_LAYER;

    auto layer = createParticleLayer(sceneIdx);
    layer->autorelease();

    return layer;
}

Layer* backParticleAction()
{
    sceneIdx--;
    int total = MAX_LAYER;
    if( sceneIdx < 0 )
        sceneIdx += total;

    auto layer = createParticleLayer(sceneIdx);
    layer->autorelease();

    return layer;
}

Layer* restartParticleAction()
{
    auto layer = createParticleLayer(sceneIdx);
    layer->autorelease();

    return layer;
}

ParticleDemo::~ParticleDemo(void)
{
    CC_SAFE_RELEASE(_emitter);
}

void ParticleDemo::onEnter(void)
{
    BaseTest::onEnter();

	_color = LayerColor::create( Color4B(127,127,127,255) );
	this->addChild(_color);

    _emitter = nullptr;

    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesBegan = CC_CALLBACK_2(ParticleDemo::onTouchesBegan, this);
    listener->onTouchesMoved = CC_CALLBACK_2(ParticleDemo::onTouchesMoved, this);
    listener->onTouchesEnded = CC_CALLBACK_2(ParticleDemo::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    auto s = Director::getInstance()->getWinSize();

    auto item4 = MenuItemToggle::createWithCallback( CC_CALLBACK_1(ParticleDemo::toggleCallback, this),
                                                               MenuItemFont::create( "Free Movement" ),
                                                               MenuItemFont::create( "Relative Movement" ),
                                                               MenuItemFont::create( "Grouped Movement" ),
                                                               nullptr );

    auto menu = Menu::create(item4, nullptr);

    menu->setPosition( Vec2::ZERO );
    item4->setPosition( Vec2( VisibleRect::left().x, VisibleRect::bottom().y+ 100) );
    item4->setAnchorPoint( Vec2(0,0) );

    addChild( menu, 100 );

    auto labelAtlas = LabelAtlas::create("0000", "fps_images.png", 12, 32, '.');
    addChild(labelAtlas, 100, kTagParticleCount);
    labelAtlas->setPosition(Vec2(s.width-66,50));

    // moving background
    _background = Sprite::create(s_back3);
    addChild(_background, 5);
    _background->setPosition( Vec2(s.width/2, s.height-180) );

    auto move = MoveBy::create(4, Vec2(300,0) );
    auto move_back = move->reverse();
    auto seq = Sequence::create( move, move_back, nullptr);
    _background->runAction( RepeatForever::create(seq) );


    scheduleUpdate();
}

std::string ParticleDemo::title() const
{
    return "Particle Demo";
}

std::string ParticleDemo::subtitle() const
{
    return "No title";
}

void ParticleDemo::onTouchesBegan(const std::vector<Touch*>& touches, Event  *event)
{
    onTouchesEnded(touches, event);
}

void ParticleDemo::onTouchesMoved(const std::vector<Touch*>& touches, Event  *event)
{
    return onTouchesEnded(touches, event);
}

void ParticleDemo::onTouchesEnded(const std::vector<Touch*>& touches, Event  *event)
{
    auto touch = touches[0];

    auto location = touch->getLocation();

    auto pos = Vec2::ZERO;
    if (_background)
    {
        pos = _background->convertToWorldSpace(Vec2::ZERO);
    }

    if (_emitter != nullptr)
    {
        _emitter->setPosition(location -pos);
    }
}

void ParticleDemo::update(float dt)
{
    if (_emitter)
    {
        auto atlas = (LabelAtlas*)getChildByTag(kTagParticleCount);
        char str[5] = {0};
        sprintf(str, "%04d", _emitter->getParticleCount());
        atlas->setString(str);
    }
}

void ParticleDemo::toggleCallback(Ref* sender)
{
    if (_emitter != nullptr)
    {
        if (_emitter->getPositionType() == ParticleSystem::PositionType::GROUPED)
            _emitter->setPositionType(ParticleSystem::PositionType::FREE);
        else if (_emitter->getPositionType() == ParticleSystem::PositionType::FREE)
            _emitter->setPositionType(ParticleSystem::PositionType::RELATIVE);
        else if (_emitter->getPositionType() == ParticleSystem::PositionType::RELATIVE)
            _emitter->setPositionType(ParticleSystem::PositionType::GROUPED );
    }
}

void ParticleDemo::restartCallback(Ref* sender)
{
    if (_emitter != nullptr)
    {
        _emitter->resetSystem();
    }
}

void ParticleDemo::nextCallback(Ref* sender)
{
    auto s = new (std::nothrow) ParticleTestScene();
    s->addChild( nextParticleAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}

void ParticleDemo::backCallback(Ref* sender)
{
    auto s = new (std::nothrow) ParticleTestScene();
    s->addChild( backParticleAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}

void ParticleDemo::setEmitterPosition()
{
    auto s = Director::getInstance()->getWinSize();
    if (_emitter != nullptr)
    {
        _emitter->setPosition( Vec2(s.width / 2, s.height / 2) );
    }
}

// ParticleBatchHybrid

void ParticleBatchHybrid::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::create("Particles/LavaFlow.plist");
    _emitter->retain();
    auto batch = ParticleBatchNode::createWithTexture(_emitter->getTexture());

    batch->addChild(_emitter);

    addChild(batch, 10);

     schedule(CC_SCHEDULE_SELECTOR(ParticleBatchHybrid::switchRender), 2.0f);

     auto node = Node::create();
     addChild(node);

     _parent1 = batch;
     _parent2 = node;
}

void ParticleBatchHybrid::switchRender(float dt)
{
     bool usingBatch = ( _emitter->getBatchNode() != nullptr );
     _emitter->removeFromParentAndCleanup(false);

     auto newParent = (usingBatch ? _parent2  : _parent1 );
     newParent->addChild(_emitter);

     log("Particle: Using new parent: %s", usingBatch ? "CCNode" : "CCParticleBatchNode");
}

std::string ParticleBatchHybrid::title() const
{
    return "Particle Batch";
}

std::string ParticleBatchHybrid::subtitle() const
{
    return "Hybrid: batched and non batched every 2 seconds";
}

// ParticleBatchMultipleEmitters

void ParticleBatchMultipleEmitters::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    auto emitter1 = ParticleSystemQuad::create("Particles/LavaFlow.plist");
    emitter1->setStartColor(Color4F(1,0,0,1));
    auto emitter2 = ParticleSystemQuad::create("Particles/LavaFlow.plist");
    emitter2->setStartColor(Color4F(0,1,0,1));
    auto emitter3 = ParticleSystemQuad::create("Particles/LavaFlow.plist");
    emitter3->setStartColor(Color4F(0,0,1,1));

    auto s = Director::getInstance()->getWinSize();

    emitter1->setPosition(Vec2( s.width/1.25f, s.height/1.25f));
    emitter2->setPosition(Vec2( s.width/2, s.height/2));
    emitter3->setPosition(Vec2( s.width/4, s.height/4));

    auto batch = ParticleBatchNode::createWithTexture(emitter1->getTexture());

    batch->addChild(emitter1, 0);
    batch->addChild(emitter2, 0);
    batch->addChild(emitter3, 0);

    addChild(batch, 10);
}

std::string ParticleBatchMultipleEmitters::title() const
{
    return "Particle Batch";
}

std::string ParticleBatchMultipleEmitters::subtitle() const
{
    return "Multiple emitters. One Batch";
}

// ParticleReorder

void ParticleReorder::onEnter()
{
    ParticleDemo::onEnter();

    _order = 0;
    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    auto ignore = ParticleSystemQuad::create("Particles/SmallSun.plist");
    auto parent1 = Node::create();
    auto parent2 = ParticleBatchNode::createWithTexture(ignore->getTexture());
    ignore->unscheduleUpdate();

    for( unsigned int i=0; i<2;i++)
    {
        auto parent = ( i==0 ? parent1 : parent2 );

        auto emitter1 = ParticleSystemQuad::create("Particles/SmallSun.plist");
        emitter1->setStartColor(Color4F(1,0,0,1));
        emitter1->setBlendAdditive(false);
        auto emitter2 = ParticleSystemQuad::create("Particles/SmallSun.plist");
        emitter2->setStartColor(Color4F(0,1,0,1));
        emitter2->setBlendAdditive(false);
        auto emitter3 = ParticleSystemQuad::create("Particles/SmallSun.plist");
        emitter3->setStartColor(Color4F(0,0,1,1));
        emitter3->setBlendAdditive(false);

        auto s = Director::getInstance()->getWinSize();

        int neg = (i==0 ? 1 : -1 );

        emitter1->setPosition(Vec2( s.width/2-30,    s.height/2+60*neg));
        emitter2->setPosition(Vec2( s.width/2,        s.height/2+60*neg));
        emitter3->setPosition(Vec2( s.width/2+30,    s.height/2+60*neg));

        parent->addChild(emitter1, 0, 1);
        parent->addChild(emitter2, 0, 2);
        parent->addChild(emitter3, 0, 3);

        addChild(parent, 10, 1000+i);
    }

    schedule(CC_SCHEDULE_SELECTOR(ParticleReorder::reorderParticles), 1.0f);
}

std::string ParticleReorder::title() const
{
    return "Reordering particles";
}

std::string ParticleReorder::subtitle() const
{
    return "Reordering particles with and without batches batches";
}

void ParticleReorder::reorderParticles(float dt)
{
    for( int i=0; i<2;i++) {
        auto parent = getChildByTag(1000+i);

        auto child1 = parent->getChildByTag(1);
        auto child2 = parent->getChildByTag(2);
        auto child3 = parent->getChildByTag(3);

        if( _order % 3 == 0 ) {
            parent->reorderChild(child1, 1);
            parent->reorderChild(child2, 2);
            parent->reorderChild(child3, 3);

        } else if (_order % 3 == 1 ) {
            parent->reorderChild(child1, 3);
            parent->reorderChild(child2, 1);
            parent->reorderChild(child3, 2);

        } else if (_order % 3 == 2 ) {
            parent->reorderChild(child1, 2);
            parent->reorderChild(child2, 3);
            parent->reorderChild(child3, 1);
        }
    }

    _order++;
}

class RainbowEffect : public ParticleSystemQuad
{
public:
    bool init();
    virtual bool initWithTotalParticles(int numberOfParticles) override;
    virtual void update(float dt) override;
};

bool RainbowEffect::init()
{
    return initWithTotalParticles(150);
}

bool RainbowEffect::initWithTotalParticles(int numberOfParticles)
{
    if( ParticleSystemQuad::initWithTotalParticles(numberOfParticles) )
    {
        // additive
        setBlendAdditive(false);

        // duration
        setDuration(ParticleSystem::DURATION_INFINITY);

        // Gravity Mode
        setEmitterMode(ParticleSystem::Mode::GRAVITY);

        // Gravity Mode: gravity
        setGravity(Vec2(0,0));

        // Gravity mode: radial acceleration
        setRadialAccel(0);
        setRadialAccelVar(0);

        // Gravity mode: speed of particles
        setSpeed(120);
        setSpeedVar(0);


        // angle
        setAngle(180);
        setAngleVar(0);

        // emitter position
        auto winSize = Director::getInstance()->getWinSize();
        setPosition(Vec2(winSize.width/2, winSize.height/2));
        setPosVar(Vec2::ZERO);

        // life of particles
        setLife(0.5f);
        setLifeVar(0);

        // size, in pixels
        setStartSize(25.0f);
        setStartSizeVar(0);
        setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

        // emits per seconds
        setEmissionRate(getTotalParticles()/getLife());

        // color of particles
        setStartColor(Color4F(Color4B(50, 50, 50, 50)));
        setEndColor(Color4F(Color4B(0, 0, 0, 0)));

        _startColorVar.r = 0.0f;
        _startColorVar.g = 0.0f;
        _startColorVar.b = 0.0f;
        _startColorVar.a = 0.0f;
        _endColorVar.r = 0.0f;
        _endColorVar.g = 0.0f;
        _endColorVar.b = 0.0f;
        _endColorVar.a = 0.0f;

        setTexture(Director::getInstance()->getTextureCache()->addImage("Images/particles.png"));
        return true;
    }

    return false;
}

void RainbowEffect::update(float dt)
{
    _emitCounter = 0;
    ParticleSystemQuad::update(dt);
}


void Issue1201::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    RainbowEffect *particle = new (std::nothrow) RainbowEffect();
    particle->initWithTotalParticles(50);

    addChild(particle);

    auto s = Director::getInstance()->getWinSize();

    particle->setPosition(Vec2(s.width/2, s.height/2));

    _emitter = particle;
}

std::string Issue1201::title() const
{
    return "Issue 1201. Unfinished";
}

std::string Issue1201::subtitle() const
{
    return "Unfinished test. Ignore it";
}

void MultipleParticleSystems::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    Director::getInstance()->getTextureCache()->addImage("Images/particles.png");

    for (int i = 0; i<5; i++) {
        auto particleSystem = ParticleSystemQuad::create("Particles/SpinningPeas.plist");

        particleSystem->setPosition(Vec2(i*50 ,i*50));

        particleSystem->setPositionType(ParticleSystem::PositionType::GROUPED);
        addChild(particleSystem);
    }

    _emitter = nullptr;

}

std::string MultipleParticleSystems::title() const
{
    return "Multiple particle systems";
}

std::string MultipleParticleSystems::subtitle() const
{
    return "v1.1 test: FPS should be lower than next test";
}

void MultipleParticleSystems::update(float dt)
{
    auto atlas = (LabelAtlas*) getChildByTag(kTagParticleCount);

    unsigned int count = 0; 
    
    for(const auto &child : _children) {
        auto item = dynamic_cast<ParticleSystem*>(child);
        if (item != nullptr)
        {
            count += item->getParticleCount();
        }
    }

    char str[100] = {0};
    sprintf(str, "%4d", count);
    atlas->setString(str);
}

// MultipleParticleSystemsBatched

void MultipleParticleSystemsBatched::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    ParticleBatchNode *batchNode = ParticleBatchNode::createWithTexture(nullptr, 3000);

    addChild(batchNode, 1, 2);

    for (int i = 0; i<5; i++) {

        auto particleSystem = ParticleSystemQuad::create("Particles/SpinningPeas.plist");

        particleSystem->setPositionType(ParticleSystem::PositionType::GROUPED);
        particleSystem->setPosition(Vec2(i*50 ,i*50));

        batchNode->setTexture(particleSystem->getTexture());
        batchNode->addChild(particleSystem);
    }

    _emitter = nullptr;
}

void MultipleParticleSystemsBatched::update(float dt)
{
    auto atlas = (LabelAtlas*) getChildByTag(kTagParticleCount);

    int count = 0;

    auto batchNode = getChildByTag(2);
    for(const auto &child : batchNode->getChildren()) {
        auto item = dynamic_cast<ParticleSystem*>(child);
        if (item != nullptr)
        {
            count += item->getParticleCount();
        }
    }

    char str[50] = {0};
    sprintf(str, "%4d", count);
    atlas->setString(str);
}

std::string MultipleParticleSystemsBatched::title() const
{
    return "Multiple particle systems batched";
}

std::string MultipleParticleSystemsBatched::subtitle() const
{
    return "v1.1 test: should perform better than previous test";
}

// AddAndDeleteParticleSystems

void AddAndDeleteParticleSystems::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;

    //adds the texture inside the plist to the texture cache
    _batchNode = ParticleBatchNode::createWithTexture((Texture2D*)nullptr, 16000);

    addChild(_batchNode, 1, 2);

    for (int i = 0; i<6; i++) {

        auto particleSystem = ParticleSystemQuad::create("Particles/Spiral.plist");
        _batchNode->setTexture(particleSystem->getTexture());

        particleSystem->setPositionType(ParticleSystem::PositionType::GROUPED);
        particleSystem->setTotalParticles(200);

        particleSystem->setPosition(Vec2(i*15 +100,i*15+100));

        unsigned int randZ = rand() % 100;
        _batchNode->addChild(particleSystem, randZ, -1);

    }

    schedule(CC_SCHEDULE_SELECTOR(AddAndDeleteParticleSystems::removeSystem), 0.5f);
    _emitter = nullptr;

}

void AddAndDeleteParticleSystems::removeSystem(float dt)
{
    ssize_t nChildrenCount = _batchNode->getChildren().size();
    if (nChildrenCount > 0) 
    {
        CCLOG("remove random system");
        unsigned int uRand = rand() % (nChildrenCount - 1);
        _batchNode->removeChild(_batchNode->getChildren().at(uRand), true);

        auto particleSystem = ParticleSystemQuad::create("Particles/Spiral.plist");
        //add new

        particleSystem->setPositionType(ParticleSystem::PositionType::GROUPED);
        particleSystem->setTotalParticles(200);

        particleSystem->setPosition(Vec2(rand() % 300 ,rand() % 400));

        CCLOG("add a new system");
        unsigned int randZ = rand() % 100;
        _batchNode->addChild(particleSystem, randZ, -1);
    }
}

void AddAndDeleteParticleSystems::update(float dt)
{
    auto atlas = (LabelAtlas*) getChildByTag(kTagParticleCount);

    int count = 0;

    auto batchNode = getChildByTag(2);
    for(const auto &child : batchNode->getChildren()) {
        auto item = dynamic_cast<ParticleSystem*>(child);
        if (item != nullptr)
        {
            count += item->getParticleCount();
        }
    }

    char str[100] = {0};
    sprintf(str, "%4d", count);
    atlas->setString(str);
}

std::string AddAndDeleteParticleSystems::title() const
{
    return "Add and remove Particle System";
}

std::string AddAndDeleteParticleSystems::subtitle() const
{
    return "v1.1 test: every 2 sec 1 system disappear, 1 appears";
}

// ReorderParticleSystems

void ReorderParticleSystems::onEnter()
{
    ParticleDemo::onEnter();

    _color->setColor(Color3B::BLACK);
    removeChild(_background ,true);
    _background = nullptr;

    _batchNode = ParticleBatchNode::create("Images/stars-grayscale.png" ,3000);

    addChild(_batchNode, 1, 2);


    for (int i = 0; i<3; i++) {

        auto particleSystem = ParticleSystemQuad::createWithTotalParticles(200);
        particleSystem->retain();
        particleSystem->setTexture(_batchNode->getTexture());

        // duration
        particleSystem->setDuration(ParticleSystem::DURATION_INFINITY);

        // radius mode
        particleSystem->setEmitterMode(ParticleSystem::Mode::RADIUS);

        // radius mode: 100 pixels from center
        particleSystem->setStartRadius(100);
        particleSystem->setStartRadiusVar(0);
        particleSystem->setEndRadius(ParticleSystem::START_RADIUS_EQUAL_TO_END_RADIUS);
        particleSystem->setEndRadiusVar(0);    // not used when start == end

        // radius mode: degrees per second
        // 45 * 4 seconds of life = 180 degrees
        particleSystem->setRotatePerSecond(45);
        particleSystem->setRotatePerSecondVar(0);


        // angle
        particleSystem->setAngle(90);
        particleSystem->setAngleVar(0);

        // emitter position
        particleSystem->setPosVar(Vec2::ZERO);

        // life of particles
        particleSystem->setLife(4);
        particleSystem->setLifeVar(0);

        // spin of particles
        particleSystem->setStartSpin(0);
        particleSystem->setStartSpinVar(0);
        particleSystem->setEndSpin(0);
        particleSystem->setEndSpinVar(0);

        // color of particles
        float color[3] = {0,0,0};
        color[i] = 1;
        Color4F startColor(color[0], color[1], color[2], 1.0f);
        particleSystem->setStartColor(startColor);

        Color4F startColorVar(0, 0, 0, 0);
        particleSystem->setStartColorVar(startColorVar);

        Color4F endColor = startColor;
        particleSystem->setEndColor(endColor);

        Color4F endColorVar = startColorVar;
        particleSystem->setEndColorVar(endColorVar);

        // size, in pixels
        particleSystem->setStartSize(32);
        particleSystem->setStartSizeVar(0);
        particleSystem->setEndSize(ParticleSystem::START_SIZE_EQUAL_TO_END_SIZE);

        // emits per second
        particleSystem->setEmissionRate(particleSystem->getTotalParticles()/particleSystem->getLife());

        // additive

        particleSystem->setPosition(Vec2(i*10+120 ,200));


        _batchNode->addChild(particleSystem);
        particleSystem->setPositionType(ParticleSystem::PositionType::FREE);

        particleSystem->release();

        //[pBNode addChild:particleSystem z:10 tag:0);

    }

    schedule(CC_SCHEDULE_SELECTOR(ReorderParticleSystems::reorderSystem), 2.0f);
    _emitter = nullptr;

}

void ReorderParticleSystems::reorderSystem(float time)
{
    auto system = static_cast<ParticleSystem*>(_batchNode->getChildren().at(1));
    _batchNode->reorderChild(system, system->getLocalZOrder() - 1);     
}


void ReorderParticleSystems::update(float dt)
{
    auto atlas = static_cast<LabelAtlas*>(getChildByTag(kTagParticleCount));

    int count = 0;

    auto batchNode = getChildByTag(2);
    for(const auto &child : batchNode->getChildren()) {
        auto item = dynamic_cast<ParticleSystem*>(child);
        if (item != nullptr)
        {
            count += item->getParticleCount();
        }
    }
    char str[100] = {0};
    sprintf(str, "%4d", count);
    atlas->setString(str);
}

std::string ReorderParticleSystems::title() const
{
    return "reorder systems";
}

std::string ReorderParticleSystems::subtitle() const
{
    return "changes every 2 seconds";
}

// PremultipliedAlphaTest

std::string PremultipliedAlphaTest::title() const
{
    return "premultiplied alpha and readd child test";
}

std::string PremultipliedAlphaTest::subtitle() const
{
    return "no black halo, particles should fade out\n animation should be normal";
}

void PremultipliedAlphaTest::readdPaticle(float delta)
{
    if (_hasEmitter)
    {
        _emitter->removeFromParent();
    }
    else
    {
        this->addChild(_emitter);
    }
    
    _hasEmitter = !_hasEmitter;
}

void PremultipliedAlphaTest::onEnter()
{
    ParticleDemo::onEnter();

	_color->setColor(Color3B::BLUE);
    this->removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::create("Particles/BoilingFoam.plist");
    _emitter->retain();
    // Particle Designer "normal" blend func causes black halo on premul textures (ignores multiplication)
    //this->emitter.blendFunc = (BlendFunc){ GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA };

    // Cocos2d "normal" blend func for premul causes alpha to be ignored (oversaturates colors)
    _emitter->setBlendFunc( BlendFunc::ALPHA_PREMULTIPLIED );

    CCASSERT(_emitter->isOpacityModifyRGB(), "Particle texture does not have premultiplied alpha, test is useless");

    // Toggle next line to see old behavior
    //	this->emitter.opacityModifyRGB = NO;

    _emitter->setStartColor(Color4F(1.0f, 1.0f, 1.0f, 1.0f));
    _emitter->setEndColor(Color4F(1.0f, 1.0f, 1.0f, 0.0f));
    _emitter->setStartColorVar(Color4F(0.0f, 0.0f, 0.0f, 0.0f));
    _emitter->setEndColorVar(Color4F(0.0f, 0.0f, 0.0f, 0.0f));

    this->addChild(_emitter, 10);
    _hasEmitter = true;
    
    schedule(CC_SCHEDULE_SELECTOR(PremultipliedAlphaTest::readdPaticle), 1.0f);
}

// PremultipliedAlphaTest2

void PremultipliedAlphaTest2::onEnter()
{
    ParticleDemo::onEnter();

	_color->setColor(Color3B::BLACK);
    this->removeChild(_background, true);
    _background = nullptr;

    _emitter = ParticleSystemQuad::create("Particles/TestPremultipliedAlpha.plist");
    _emitter->retain();
    this->addChild(_emitter ,10);
}

std::string PremultipliedAlphaTest2::title() const
{
    return "premultiplied alpha 2";
}

std::string PremultipliedAlphaTest2::subtitle() const
{
    return "Arrows should be faded";
}


// Issue3990

void Issue3990::onEnter()
{
    ParticleDemo::onEnter();
    
	_color->setColor(Color3B::BLACK);
    this->removeChild(_background, true);
    _background = nullptr;
    
    _emitter = ParticleSystemQuad::create("Particles/Spiral.plist");
    
    _emitter->setPositionType(ParticleSystem::PositionType::GROUPED);
    _emitter->setTotalParticles(1000);
    _emitter->setEmissionRate(_emitter->getTotalParticles() / _emitter->getLife());
    _emitter->setPosition(VisibleRect::center());
    
    _emitter->retain();
    this->addChild(_emitter ,10);
}

std::string Issue3990::title() const
{
    return "Issue3990, setTotalParticle should work";
}

std::string Issue3990::subtitle() const
{
    return "Show '998' or '999' at bottom right side";
}


// ParticleVisibleTest
void ParticleVisibleTest::onEnter()
{
    ParticleDemo::onEnter();
    
    _emitter = ParticleFireworks::create();
    _emitter->retain();
    _background->addChild(_emitter, 10);
    
    _emitter->setTexture( Director::getInstance()->getTextureCache()->addImage(s_stars1) );
    
    schedule(CC_SCHEDULE_SELECTOR(ParticleVisibleTest::callback), 1);
    
    setEmitterPosition();
}

std::string ParticleVisibleTest::title() const
{
    return "Issue4573";
}

std::string ParticleVisibleTest::subtitle() const
{
    return "Visible enable/disable";
}

void ParticleVisibleTest::callback(float delta)
{
    _emitter->setVisible(!_emitter->isVisible());
}

//
// ParticleAutoBatching
//
void ParticleAutoBatching::onEnter()
{
    ParticleDemo::onEnter();

	_color->setColor(Color3B::BLACK);
    this->removeChild(_background, true);
    _background = nullptr;

    Size s = Director::getInstance()->getWinSize();

    for(int i=0; i<10; i++) {
        auto particle = ParticleSystemQuad::create("Particles/SmallSun.plist");
        particle->setTotalParticles(100);
        particle->setPosition(Vec2(i*s.width/11, s.height/2));
        this->addChild(particle ,10);
    }
}

std::string ParticleAutoBatching::title() const
{
    return "AutoBatching";
}

std::string ParticleAutoBatching::subtitle() const
{
    return "All 10 particles should be drawin in one batch";
}


//
// ParticleResetTotalParticles
//
void ParticleResetTotalParticles::onEnter()
{
    ParticleDemo::onEnter();
    
    _color->setColor(Color3B::BLACK);
    removeChild(_background, true);
    _background = nullptr;
    
    auto p = ParticleFire::createWithTotalParticles(10);
    this->addChild(p);
    
    auto add = MenuItemFont::create("add 10 particles",
                                    [p](Ref*)->void
                                    {
                                        p->setTotalParticles(p->getTotalParticles() + 10 );
                                    });
    add->setPosition(Vec2(0, 25));
    auto remove = MenuItemFont::create("remove 10 particles",
                                       [p](Ref*)->void
                                       {
                                           int count = p->getTotalParticles() - 10;
                                           if (count < 0) { count = 0; }
                                           p->setTotalParticles(count);
                                       });
    remove->setPosition(Vec2(0, -25));
    
    auto menu = Menu::create(add, remove, nullptr);
    menu->setPosition(Vec2(VisibleRect::center()));
    this->addChild(menu);
    
}

std::string ParticleResetTotalParticles::title() const
{
    return "reset total particles";
}

std::string ParticleResetTotalParticles::subtitle() const
{
    return "it should work as well";
}

//
// main
//
void ParticleTestScene::runThisTest()
{
    addChild(nextParticleAction());

    Director::getInstance()->replaceScene(this);
}