axmol/extensions/Particle3D/PU/CCPUVortexAffector.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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 furnished to do so, subject to the following conditions:

 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 "CCPUVortexAffector.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_CC_BEGIN

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

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

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

void PUVortexAffector::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 PUVortexAffector::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();
}

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

void PUVortexAffector::copyAttributesTo(PUAffector* affector)
{
    PUAffector::copyAttributesTo(affector);

    PUVortexAffector* vortexAffector = static_cast<PUVortexAffector*>(affector);
    vortexAffector->_rotation        = _rotation;
    vortexAffector->_rotationVector  = _rotationVector;
    vortexAffector->setRotationSpeed(getRotationSpeed()->clone());
}

NS_CC_END