void ParticleController::update() {
update_emitter();
update_renderer();
if (particles.size() == 0 && spawned && spawn_once) {
removed = true;
delete texture;
}
}
void ParticleEffect::update(void)
{
float cur_t = g_timer->now();
float delta_t = cur_t - m_last_update_time;
m_last_update_time = cur_t;
float pe_time = cur_t - m_start_time;
update_emitter(delta_t,pe_time);
for(unsigned int i=0; i<m_num_particles; ++i) {
Particle &p = m_particles[i];
if (p.alive == false)
continue;
// eliminate dead particles
float p_time = cur_t - p.start_time;
if (p_time > m_particle_ttl) {
p.alive = false;
continue;
}
// update live particle
update_single_particle(p,delta_t,p_time);
}
// emit new particles
m_particles_to_emit += delta_t * m_emit_rate;
while (m_particles_to_emit>1.0f) {
if (m_mep!=0 && m_lifetime_num_emitted>=m_mep)
break;
m_particles_to_emit -= 1.0f;
// emit particle
int pos = -1;
// find empty space
for(unsigned int i=0; i<m_num_particles; ++i) {
if (!m_particles[i].alive) {
pos = i;
break;
}
}
if (pos==-1) { // free space not available ?
// printf("particle overflow\n");
break;
}
if (!m_emitting)
continue;
Particle &p = m_particles[pos];
p.alive = true;
p.start_time = cur_t;
emit_single_particle(p);
m_lifetime_num_emitted++;
}
}
