axmol/extensions/Particle3D/ParticleUniverse/ParticleAffectors/CCPUParticle3DVortexAffector.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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 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
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#include "CCPUParticle3DVortexAffector.h"
#include "extensions/Particle3D/ParticleUniverse/CCPUParticleSystem3D.h"

NS_CC_BEGIN

// Constants
const Vec3 PUParticle3DVortexAffector::DEFAULT_ROTATION_VECTOR(0, 0, 0);
const float PUParticle3DVortexAffector::DEFAULT_ROTATION_SPEED = 1.0f;

//-----------------------------------------------------------------------
PUParticle3DVortexAffector::PUParticle3DVortexAffector(void) : 
    PUParticle3DAffector(),
    _rotationVector(DEFAULT_ROTATION_VECTOR)
{
    _dynRotationSpeed = new (std::nothrow) PUDynamicAttributeFixed();
    (static_cast<PUDynamicAttributeFixed*>(_dynRotationSpeed))->setValue(DEFAULT_ROTATION_SPEED);
}
//-----------------------------------------------------------------------
PUParticle3DVortexAffector::~PUParticle3DVortexAffector(void)
{
    if (_dynRotationSpeed)
    {
        CC_SAFE_DELETE(_dynRotationSpeed);
    }
}
//-----------------------------------------------------------------------
const Vec3& PUParticle3DVortexAffector::getRotationVector(void) const
{
    return _rotationVector;
}
//-----------------------------------------------------------------------
void PUParticle3DVortexAffector::setRotationVector(const Vec3& rotationVector)
{
    _rotationVector = rotationVector;
}
//-----------------------------------------------------------------------
PUDynamicAttribute* PUParticle3DVortexAffector::getRotationSpeed(void) const
{
    return _dynRotationSpeed;
}
//-----------------------------------------------------------------------
void PUParticle3DVortexAffector::setRotationSpeed(PUDynamicAttribute* dynRotationSpeed)
{
    if (_dynRotationSpeed)
        CC_SAFE_DELETE(_dynRotationSpeed);

    _dynRotationSpeed = dynRotationSpeed;
}
//-----------------------------------------------------------------------
float PUParticle3DVortexAffector::calculateRotationSpeed(void)
{
    return float(_dynamicAttributeHelper.calculate(_dynRotationSpeed, (static_cast<PUParticleSystem3D *>(_particleSystem))->getTimeElapsedSinceStart()));
}
//-----------------------------------------------------------------------

void PUParticle3DVortexAffector::updatePUAffector( PUParticle3D *particle, float deltaTime )
{
    //for (auto iter : _particleSystem->getParticles())
    {
        //PUParticle3D *particle = iter;
        // Explicitly check on 'freezed', because it passes the techniques' validation.
        if (particle->isFreezed())
            return;

        // Rotate position, direction and orientation (visible particle only) and compensate for the affector position
        // Also take the affect specialisation into account
        Mat4 rotMat;
        Mat4::createRotation(_rotation, &rotMat);
        Vec3 local = particle->position - _derivedPosition;
        particle->position = _derivedPosition + rotMat * local;
        particle->direction = rotMat * particle->direction;
        particle->orientation = _rotation * particle->orientation;
    }
}

void PUParticle3DVortexAffector::preUpdateAffector( float deltaTime )
{
    PUParticleSystem3D* sys = static_cast<PUParticleSystem3D *>(_particleSystem);

    if (sys)
    {
        Mat4 rotMat;
        Mat4::createRotation(sys->getDerivedOrientation(), &rotMat);
        _rotation.set(rotMat * _rotationVector, float(calculateRotationSpeed() * deltaTime));
    }
    else
    {
        _rotation.set(_rotationVector, float(calculateRotationSpeed() * deltaTime));
    }

    getDerivedPosition();
}

PUParticle3DVortexAffector* PUParticle3DVortexAffector::create()
{
    auto pvf = new (std::nothrow) PUParticle3DVortexAffector();
    pvf->autorelease();
    return pvf;
}

NS_CC_END