axmol/extensions/Particle3D/PU/CCPUOnPositionObserver.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://axmolengine.github.io/

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 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 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
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#include "extensions/Particle3D/PU/CCPUOnPositionObserver.h"
#include "extensions/Particle3D/PU/CCPUParticleSystem3D.h"

NS_AX_BEGIN

// Constants
const Vec3 PUOnPositionObserver::DEFAULT_POSITION_THRESHOLD(0, 0, 0);

//-----------------------------------------------------------------------
PUOnPositionObserver::PUOnPositionObserver()
    : PUObserver()
    , _positionXThreshold(DEFAULT_POSITION_THRESHOLD.x)
    , _positionYThreshold(DEFAULT_POSITION_THRESHOLD.y)
    , _positionZThreshold(DEFAULT_POSITION_THRESHOLD.z)
    , _positionXThresholdSet(false)
    , _positionYThresholdSet(false)
    , _positionZThresholdSet(false)
    , _comparePositionX(CO_LESS_THAN)
    , _comparePositionY(CO_LESS_THAN)
    , _comparePositionZ(CO_LESS_THAN)
{}
//-----------------------------------------------------------------------
bool PUOnPositionObserver::observe(PUParticle3D* particle, float /*timeElapsed*/)
{
    if (!particle)
        return false;

    // Added scale in V1.3.1
    if (_positionXThresholdSet && _comparePositionX == CO_LESS_THAN &&
        particle->position.x < _positionXThreshold * _observerScale.x)
        return true;
    if (_positionXThresholdSet && _comparePositionX == CO_GREATER_THAN &&
        particle->position.x > _positionXThreshold * _observerScale.x)
        return true;
    if (_positionXThresholdSet && _comparePositionX == CO_EQUALS &&
        particle->position.x == _positionXThreshold * _observerScale.x)
        return true;

    if (_positionYThresholdSet && _comparePositionY == CO_LESS_THAN &&
        particle->position.y < _positionYThreshold * _observerScale.y)
        return true;
    if (_positionYThresholdSet && _comparePositionY == CO_GREATER_THAN &&
        particle->position.y > _positionYThreshold * _observerScale.y)
        return true;
    if (_positionYThresholdSet && _comparePositionY == CO_EQUALS &&
        particle->position.y == _positionYThreshold * _observerScale.y)
        return true;

    if (_positionZThresholdSet && _comparePositionZ == CO_LESS_THAN &&
        particle->position.z < _positionZThreshold * _observerScale.z)
        return true;
    if (_positionZThresholdSet && _comparePositionZ == CO_GREATER_THAN &&
        particle->position.z > _positionZThreshold * _observerScale.z)
        return true;
    if (_positionZThresholdSet && _comparePositionZ == CO_EQUALS &&
        particle->position.z == _positionZThreshold * _observerScale.z)
        return true;

    return false;
}

PUOnPositionObserver* PUOnPositionObserver::create()
{
    auto ppo = new PUOnPositionObserver();
    ppo->autorelease();
    return ppo;
}

void PUOnPositionObserver::copyAttributesTo(PUObserver* observer)
{
    PUObserver::copyAttributesTo(observer);

    PUOnPositionObserver* onPositionObserver   = static_cast<PUOnPositionObserver*>(observer);
    onPositionObserver->_positionXThreshold    = _positionXThreshold;
    onPositionObserver->_positionYThreshold    = _positionYThreshold;
    onPositionObserver->_positionZThreshold    = _positionZThreshold;
    onPositionObserver->_comparePositionX      = _comparePositionX;
    onPositionObserver->_comparePositionY      = _comparePositionY;
    onPositionObserver->_comparePositionZ      = _comparePositionZ;
    onPositionObserver->_positionXThresholdSet = _positionXThresholdSet;
    onPositionObserver->_positionYThresholdSet = _positionYThresholdSet;
    onPositionObserver->_positionZThresholdSet = _positionZThresholdSet;
}

NS_AX_END