axmol/extensions/Particle3D/ParticleUniverse/ParticleAffectors/CCPUParticle3DForceFieldAffector.cpp

/****************************************************************************
 Copyright (c) 2015 Chukong Technologies Inc.
 
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#include "CCPUParticle3DForceFieldAffector.h"
#include "Particle3D/ParticleUniverse/CCPUParticleSystem3D.h"

NS_CC_BEGIN
//-----------------------------------------------------------------------
// Constants
const PUForceField::ForceFieldType PUParticle3DForceFieldAffector::DEFAULT_FORCEFIELD_TYPE = PUForceField::FF_REALTIME_CALC;
const float PUParticle3DForceFieldAffector::DEFAULT_DELTA = 1.0f;
const float PUParticle3DForceFieldAffector::DEFAULT_FORCE = 400.0f;
const unsigned short PUParticle3DForceFieldAffector::DEFAULT_OCTAVES = 2;
const double PUParticle3DForceFieldAffector::DEFAULT_FREQUENCY = 1.0f;
const double PUParticle3DForceFieldAffector::DEFAULT_AMPLITUDE = 1.0f;
const double PUParticle3DForceFieldAffector::DEFAULT_PERSISTENCE = 3.0f;
const unsigned int PUParticle3DForceFieldAffector::DEFAULT_FORCEFIELDSIZE = 64;
const Vec3 PUParticle3DForceFieldAffector::DEFAULT_WORLDSIZE = Vec3(500.0f, 500.0f, 500.0f);
const Vec3 PUParticle3DForceFieldAffector::DEFAULT_MOVEMENT = Vec3(500.0f, 0.0f, 0.0f);
const float PUParticle3DForceFieldAffector::DEFAULT_MOVEMENT_FREQUENCY = 5.0f;

//-----------------------------------------------------------------------
PUParticle3DForceFieldAffector::PUParticle3DForceFieldAffector() :
    _forceFieldType(PUForceField::FF_REALTIME_CALC),
    _delta(DEFAULT_DELTA),
    _force(Vec3::ZERO),
    _scaleForce(DEFAULT_FORCE),
    _octaves(DEFAULT_OCTAVES),
    _frequency(DEFAULT_FREQUENCY),
    _amplitude(DEFAULT_AMPLITUDE),
    _persistence(DEFAULT_PERSISTENCE),
    _forceFieldSize(DEFAULT_FORCEFIELDSIZE),
    _worldSize(DEFAULT_WORLDSIZE),
    _prepared(true),
    _ignoreNegativeX(false),
    _ignoreNegativeY(false),
    _ignoreNegativeZ(false),
    _movement(DEFAULT_MOVEMENT),
    _movementSet(false),
    _movementFrequency(DEFAULT_MOVEMENT_FREQUENCY),
    _movementFrequencyCount(0.0f),
    _displacement(Vec3::ZERO),
    _basePosition(Vec3::ZERO),
    _suppressGeneration(false)
{
};
//-----------------------------------------------------------------------
PUParticle3DForceFieldAffector::~PUParticle3DForceFieldAffector()
{
};
//-----------------------------------------------------------------------
const PUForceField::ForceFieldType PUParticle3DForceFieldAffector::getForceFieldType(void) const
{
    return _forceFieldType;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setForceFieldType(const PUForceField::ForceFieldType forceFieldType)
{
    _forceFieldType = forceFieldType;
    if (_suppressGeneration)
        return;

    _forceField.setForceFieldType(forceFieldType);
}
//-----------------------------------------------------------------------
float PUParticle3DForceFieldAffector::getDelta(void) const
{
    return _delta;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setDelta(float delta)
{
    _delta = delta;
}
//-----------------------------------------------------------------------
float PUParticle3DForceFieldAffector::getScaleForce(void) const
{
    return _scaleForce;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setScaleForce(float scaleForce)
{
    _scaleForce = scaleForce;
}
//-----------------------------------------------------------------------
unsigned short PUParticle3DForceFieldAffector::getOctaves(void) const
{
    return _octaves;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setOctaves(unsigned short octaves)
{
    _octaves = octaves;
    if (_suppressGeneration)
        return;

    _forceField.setOctaves(octaves);
}
//-----------------------------------------------------------------------
double PUParticle3DForceFieldAffector::getFrequency(void) const
{
    return _frequency;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setFrequency(double frequency)
{
    _frequency = frequency;
    if (_suppressGeneration)
        return;

    _forceField.setFrequency(frequency);
}
//-----------------------------------------------------------------------
double PUParticle3DForceFieldAffector::getAmplitude(void) const
{
    return _amplitude;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setAmplitude(double amplitude)
{
    _amplitude = amplitude;
    if (_suppressGeneration)
        return;

    _forceField.setAmplitude(amplitude);
}
//-----------------------------------------------------------------------
double PUParticle3DForceFieldAffector::getPersistence(void) const
{
    return _persistence;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setPersistence(double persistence)
{
    _persistence = persistence;
    if (_suppressGeneration)
        return;

    _forceField.setPersistence(persistence);
}
//-----------------------------------------------------------------------
unsigned int PUParticle3DForceFieldAffector::getForceFieldSize(void) const
{
    return _forceFieldSize;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setForceFieldSize(unsigned int forceFieldSize)
{
    _forceFieldSize = forceFieldSize;
    if (_suppressGeneration)
        return;

    _forceField.setForceFieldSize(forceFieldSize);
}
//-----------------------------------------------------------------------
Vec3 PUParticle3DForceFieldAffector::getWorldSize(void) const
{
    return _worldSize;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setWorldSize(const Vec3& worldSize)
{
    _worldSize = worldSize;
    if (_suppressGeneration)
        return;

    _forceField.setWorldSize(worldSize);
}
//-----------------------------------------------------------------------
bool PUParticle3DForceFieldAffector::getIgnoreNegativeX(void) const
{
    return _ignoreNegativeX;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setIgnoreNegativeX(bool ignoreNegativeX)
{
    _ignoreNegativeX = ignoreNegativeX;
}
//-----------------------------------------------------------------------
bool PUParticle3DForceFieldAffector::getIgnoreNegativeY(void) const
{
    return _ignoreNegativeY;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setIgnoreNegativeY(bool ignoreNegativeY)
{
    _ignoreNegativeY = ignoreNegativeY;
}
//-----------------------------------------------------------------------
bool PUParticle3DForceFieldAffector::getIgnoreNegativeZ(void) const
{
    return _ignoreNegativeZ;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setIgnoreNegativeZ(bool ignoreNegativeZ)
{
    _ignoreNegativeZ = ignoreNegativeZ;
}
//-----------------------------------------------------------------------
float PUParticle3DForceFieldAffector::getMovementFrequency(void) const
{
    return _movementFrequency;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setMovementFrequency(float movementFrequency)
{
    _movementFrequency = movementFrequency;
    _movementSet = (movementFrequency > 0.0f);
}
//-----------------------------------------------------------------------
const Vec3& PUParticle3DForceFieldAffector::getMovement(void) const
{
    return _movement;
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::setMovement(const Vec3& movement)
{
    _movement = movement;
    _movementSet = (movement != Vec3::ZERO);
}
//-----------------------------------------------------------------------
void PUParticle3DForceFieldAffector::suppressGeneration(bool suppress)
{
    _suppressGeneration = suppress;
}

void PUParticle3DForceFieldAffector::updatePUAffector( PUParticle3D *particle, float deltaTime )
{
    //for (auto iter : _particleSystem->getParticles())
    {
        //PUParticle3D *particle = iter;
        _forceField.determineForce(particle->position, _force, _delta);
        // If negative values are ignored, set the force to 0.
        if (_ignoreNegativeX)
        {
            _force.x = 0.0f;
        }
        if (_ignoreNegativeY)
        {
            _force.y = 0.0f;
        }
        if (_ignoreNegativeZ)
        {
            _force.z = 0.0f;
        }
        particle->direction += deltaTime * _scaleForce * _force;
    }
}

void PUParticle3DForceFieldAffector::notifyStart()
{
    _movementFrequencyCount = 0.0f;
}

void PUParticle3DForceFieldAffector::preUpdateAffector( float deltaTime )
{
    if (_movementSet)
    {
        if (deltaTime > _movementFrequency)
        {
            // Ignore too large times, because it just blows things up
            return;
        }

        _movementFrequencyCount += deltaTime;
        if (_movementFrequencyCount > _movementFrequency)
        {
            _movementFrequencyCount -= _movementFrequency;
        }

        _displacement = sin(2.0f * M_PI * _movementFrequencyCount/_movementFrequency) * _movement;
        _forceField.setForceFieldPositionBase(_basePosition + _displacement);
    }
}

void PUParticle3DForceFieldAffector::prepare()
{
    //if (particleTechnique->getParentSystem())
    {
        // Forcefield position is same position as particle system position
        _forceField.initialise(_forceFieldType,
            // _particleSystem->getDerivedPosition()
            getDerivedPosition(),
            _forceFieldSize,
            _octaves,
            _frequency,
            _amplitude,
            _persistence,
            _worldSize);
    
        _basePosition = _forceField.getForceFieldPositionBase();
        _prepared = true;
    }
}

PUParticle3DForceFieldAffector* PUParticle3DForceFieldAffector::create()
{
    auto pffa = new (std::nothrow) PUParticle3DForceFieldAffector();
    pffa->autorelease();
    return pffa;
}

NS_CC_END