mirror of https://github.com/axmolengine/axmol.git
116 lines
4.3 KiB
C++
116 lines
4.3 KiB
C++
/****************************************************************************
|
|
Copyright (C) 2013 Henry van Merode. All rights reserved.
|
|
Copyright (c) 2015 Chukong Technologies Inc.
|
|
|
|
http://www.cocos2d-x.org
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
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.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
****************************************************************************/
|
|
|
|
#include "CCPUParticle3DParticleFollower.h"
|
|
#include "extensions/Particle3D/ParticleUniverse/CCPUParticleSystem3D.h"
|
|
|
|
NS_CC_BEGIN
|
|
|
|
// Constants
|
|
const float PUParticle3DParticleFollower::DEFAULT_MAX_DISTANCE = 3.40282e+038f;
|
|
const float PUParticle3DParticleFollower::DEFAULT_MIN_DISTANCE = 10.0f;
|
|
|
|
//-----------------------------------------------------------------------
|
|
PUParticle3DParticleFollower::PUParticle3DParticleFollower(void) :
|
|
PUParticle3DAffector(),
|
|
_minDistance(DEFAULT_MIN_DISTANCE),
|
|
_maxDistance(DEFAULT_MAX_DISTANCE),
|
|
_positionPreviousParticle(Vec3::ZERO),
|
|
_first(false)
|
|
{
|
|
}
|
|
|
|
PUParticle3DParticleFollower::~PUParticle3DParticleFollower( void )
|
|
{
|
|
|
|
}
|
|
//-----------------------------------------------------------------------
|
|
float PUParticle3DParticleFollower::getMaxDistance(void) const
|
|
{
|
|
return _maxDistance;
|
|
}
|
|
//-----------------------------------------------------------------------
|
|
void PUParticle3DParticleFollower::setMaxDistance(float maxDistance)
|
|
{
|
|
_maxDistance = maxDistance;
|
|
}
|
|
//-----------------------------------------------------------------------
|
|
float PUParticle3DParticleFollower::getMinDistance(void) const
|
|
{
|
|
return _minDistance;
|
|
}
|
|
//-----------------------------------------------------------------------
|
|
void PUParticle3DParticleFollower::setMinDistance(float minDistance)
|
|
{
|
|
_minDistance = minDistance;
|
|
}
|
|
|
|
void PUParticle3DParticleFollower::updatePUAffector( PUParticle3D *particle, float deltaTime )
|
|
{
|
|
//_first = true;
|
|
//for (auto iter : _particleSystem->getParticles())
|
|
{
|
|
//PUParticle3D *particle = iter;
|
|
if (!_first)
|
|
{
|
|
// Change in V 1.3.1
|
|
// Only proceed if it isn the first one. Compensate for scaling.
|
|
float distance = (particle->position).distance(_positionPreviousParticle);
|
|
float avgScale = 0.3333f * (_affectorScale.x + _affectorScale.y + _affectorScale.z);
|
|
float scaledMinDistance = avgScale * _minDistance;
|
|
if (distance > scaledMinDistance && distance < avgScale * _maxDistance)
|
|
{
|
|
// This particle drifts too much from the previous one; correct it!
|
|
float f = scaledMinDistance/distance;
|
|
particle->position = _positionPreviousParticle + f * (particle->position - _positionPreviousParticle);
|
|
}
|
|
}
|
|
_positionPreviousParticle = particle->position;
|
|
_first = false;
|
|
}
|
|
}
|
|
|
|
void PUParticle3DParticleFollower::firstParticleUpdate( PUParticle3D *particle, float deltaTime )
|
|
{
|
|
_first = true;
|
|
}
|
|
|
|
PUParticle3DParticleFollower* PUParticle3DParticleFollower::create()
|
|
{
|
|
auto ppf = new (std::nothrow) PUParticle3DParticleFollower();
|
|
ppf->autorelease();
|
|
return ppf;
|
|
}
|
|
|
|
void PUParticle3DParticleFollower::copyAttributesTo( PUParticle3DAffector* affector )
|
|
{
|
|
PUParticle3DAffector::copyAttributesTo(affector);
|
|
|
|
PUParticle3DParticleFollower* particleFollower = static_cast<PUParticle3DParticleFollower*>(affector);
|
|
particleFollower->_maxDistance = _maxDistance;
|
|
particleFollower->_minDistance = _minDistance;
|
|
}
|
|
|
|
NS_CC_END |