bool CC3ParticleEmitter::emitParticle( CC3Particle* aParticle )
{
if ( !aParticle || isFull() )
return false; // Can't add particles if there's no space
/*CC3Assert([aParticle conformsToProtocol: self.requiredParticleProtocol],
@"%@ does not conform to the %@ protocol. All particles emitted by %@ must conform to that protocol.", aParticle,
[NSString stringWithUTF8String: protocol_getName(self.requiredParticleProtocol)], self);
CC3Assert(!_particleNavigator || [aParticle conformsToProtocol: _particleNavigator.requiredParticleProtocol],
@"%@ does not conform to the %@ protocol. All particles configured by %@ must conform to that protocol.", aParticle,
[NSString stringWithUTF8String: protocol_getName(_particleNavigator.requiredParticleProtocol)], _particleNavigator);*/
// Ensure that we have capacity for this particle, and add the particle to the living
// particles, which also attaches the emitter to the particle.
if ( !ensureParticleCapacityFor( aParticle ) )
return false;
addNewParticle( aParticle );
aParticle->setIsAlive( true );
initializeParticle( aParticle );
if ( aParticle->isAlive() )
m_particleNavigator->initializeParticle( aParticle );
if ( aParticle->isAlive() )
aParticle->initializeParticle();
// If particle not aborted during initialization, accept it.
if ( aParticle->isAlive() )
acceptParticle( aParticle );
return aParticle->isAlive();
}
/**************************************************************************
* Name: initialize()
* Description: Method used to initialize the particle system.
* Inputs: none
* Returns: none
**************************************************************************/
void ParticleSystem::initialize()
{
LogManager::pushEvent(LogEventType::LogEventType_ALL_LOG_EVENT, LogLevel::LogLevel_INFO, "Initializing ParticleSystem...");
/* Gets the shader */
m_shader = ShaderBank::getShader("Shaders/Particle/fade_in_out");
LogManager::pushEvent(LogEventType::LogEventType_ALL_LOG_EVENT, LogLevel::LogLevel_DEBUG, "Registering variables...");
/* Registers the uniform variables W, V, P matrixes along with the time t.*/
m_shader->registerUniform("W");
m_shader->registerUniform("V");
m_shader->registerUniform("P");
m_shader->registerUniform("t");
/* Registers the in attributes for tjhe particle. */
m_shader->registerAttribute("position");
m_shader->registerAttribute("speed");
m_shader->registerAttribute("acceleration");
m_shader->registerAttribute("color");
m_shader->registerAttribute("spawnTime");
m_shader->registerAttribute("ttl");
LogManager::pushEvent(LogEventType::LogEventType_ALL_LOG_EVENT, LogLevel::LogLevel_DEBUG, "Creating "+ Helpers::uint32ToString(m_particleCount) +" particles...");
/* Initializes all particles of the system. */
m_particles = new Particle[m_particleCount];
for (uint32 i = 0; i < m_particleCount; ++i)
initializeParticle(m_particles[i]);
LogManager::pushEvent(LogEventType::LogEventType_ALL_LOG_EVENT, LogLevel::LogLevel_INFO, "ParticleSystem initialized.");
}
/**************************************************************************
* Name: update(float32 _dt)
* Description: Method used to update the particle system and so resets
* all dead particles.
* Inputs:
* -_dt : float32, time difference when the last update occured.
* Returns: none
**************************************************************************/
void ParticleSystem::update(float32 _dt)
{
/* Adds update time to the global time. */
m_globalTime += _dt;
/* For all Particles, if they are dead, they are re-initialized. */
for (uint32 i = 0; i < m_particleCount; ++i)
if (m_particles[i].ttl + m_particles[i].spawnTime <= m_globalTime)
initializeParticle(m_particles[i]);
}
void ParticleSystem::initialize() {
int i;
int maxParticles = (int)particleGroup.getMaxParticles();
Particle *p;
for (i=0; i<maxParticles; i++) {
p = new Particle();
initializeParticle(p);
particleGroup.add(p);
}
}
