粒子效果的总结

一、创建带纹理的粒子效果（此处以下雨ParticleRain为例）,并且可以加载自定义的纹理图案。

this->rain = ParticleRain::create();
this->rain->setTexture(Director::getInstance()->getTextureCache()->addImage("rain.png"));
this->rain->setAutoRemoveOnFinish(true);
this->rain->setZOrder(particle_rain_zorder);
this->rain->setSpeed(600);
this->rain->setScale(4);
this->rain->setOpacity(100);
this->rain->setTotalParticles(1000);
this->addChild(this->rain);

二、使用粒子编辑器，并加载到游戏中

一个在线粒子效果编辑器：Particle2dx网址是：http://www.effecthub.com/particle2dx

制作完成后，将生成一个plist文件和一个png的纹理图片。

使用ParticleBatchNode可以增加效率。

ParticleSystem* mainpageParticle = ParticleSystemQuad::create("starterpage_particle.plist");
mainpageParticle->setPosVar(Vec2(screenSize.width, screenSize.height));
mainpageParticle->setPosition(0, 0);
mainpageParticle->setAnchorPoint(Vec2(0, 0));
mainpageParticle->retain();
mainpageParticle->setPositionType(ParticleSystem::PositionType::RELATIVE); //设置位置类型
ParticleBatchNode* batch = ParticleBatchNode::createWithTexture(mainpageParticle->getTexture());
batch->addChild(mainpageParticle);
this->particleSprite->addChild(batch);
mainpageParticle->release();