4) Cocos2d-x Particle System

4) Cocos2d-x Particle System

CCparticleSystem class encapsulation controls and schedules particles. The operations include:

1. generate particles

2. Update particle status

3. Reclaim invalid Particles

CCparticleSystem derives CCParticleSystemPoint (gravity Particle System) and CCParticleSystemQuad (radioactive particle system)

Particle effects:

CCParticleExplosion (explosive particle effect) CCParticleFireworks (Fireworks particle effect) CCParticleFire (flame particle effect) CCParticleFlower (bouquet particle effect) CCParticleGalaxy (Galaxy particle effect) CCParticleMeteor (meteor particle effect) CCParticleSpiral (vortex particle effect) CCParticleSnow (snow particle effect) CCParticleSmoke (smoke particle effect) CCParticleSun (Sun particle effect) CCParticleRain (rain particle effect)

Instance:

1. Create a particle effect by creating a texture image

CCParticleSystem *particle = CCParticleExplosion::create();particle->setTexture(CCTextureCache::sharedTextureCache()->addImage("fire.png"));particle->setAutoRemoveOnFinish(true);this->addChild(particle);

2. Create a radioactive particle system (gravity-free) CCParticleSystemQuad Based on the attributes

CCParticleSystem * m_emitter; m_emitter = new CCParticleSystemQuad (); m_emitter-> initwithtotalparticipant (300); // set the texture m_emitter-> setTexture (CCTextureCache: sharedTextureCache () -> addImage ("fire.png"); m_emitter-> setDuration (-1); // alignment m_emitter-> setGravity (CCPointZero ); // angle m_emitter-> setAngle (90); m_emitter-> setAngleVar (360); // speed m_emitter-> setSpeed (160); m_emitter-> setSpeedVar (20 ); // Life Cycle m_emitter-> setLife (4); m_emitter-> setLifeVar (1); // particle rotation m_emitter-> setStartSpin (0); m_emitter-> setStartSizeVar (0 ); m_emitter-> setEndSpin (0); m_emitter-> setEndSpinVar (0); // The Particle color ccColor4F startColor = {0.5f, 0.5f, 0.5f, 0.5f }; m_emitter-> setStartColor (startColor); ccColor4F startColor2 = {0.5f, 0.5f, 0.5f, 1.0f}; m_emitter-> setStartColorVar (startColor2); ccColor4F startColor3 = {0.1f, 0.1f, 0.1f, 0.2f}; m_emitter-> setEndColor (startColor3); ccColor4F startColor4 = {0.1f, 0.1f, 0.1f, 0.2f}; m_emitter-> setEndColorVar (startColor4 ); // particle size m_emitter-> setStartSize (20366f); m_emitter-> setStartSizeVar (10.0f); m_emitter-> setEndSize (32.0f); m_emitter-> setEndSizeVar (8.0f ); // number of particles per second m_emitter-> setEmissionRate (m_emitter-> gettotalparticipant ()/m_emitter-> getLife (); // number of particles generated per second = Total number of particles/survival time; // position m_emitter-> setPosition (ccp (visibleSize. width/2, visibleSize. height/2); this-> addChild (m_emitter );

Effect: