void updateParticles(Game* game)
{
for(int i = 0; i < MAX_PARTICLES_PER_GAME; ++i)
if(game->particles[i].alive)
{
Particle* particle = &game->particles[i];
Pointf velocity = createPointf(0, 0);
velocity.x =
cos(degToRad(particle->direction.value))
* particle->speed.value;
velocity.y =
-sin(degToRad(particle->direction.value))
* particle->speed.value;
particle->position =
addPointfs(particle->position,
scalePointf(velocity, game->delta));
updateParticleAttributef(game, &particle->scale);
particle->life -= game->delta;
if(particle->life < 0)
destroyParticle(game, particle);
}
}
// 设置粒子模板
void ParticleObject::setParticleTemplate(const String &templateName)
{
destroyParticle();
// 创建实体
m_particleSystem = m_scene->getOgreSceneManager()->createParticleSystem(getFullName() , templateName);
m_particleSystem->setUserAny(Any(static_cast<ISceneObject*>(this)));
// 挂接上去
m_node->attachObject(m_particleSystem);
m_particleTemplateName = templateName;
}
void ParticleEmitter::updateLives(float time_delta)
{
for (int i = 0, c = m_rel_life.size(); i < c; ++i)
{
float rel_life = m_rel_life[i];
rel_life += time_delta / m_life[i];
m_rel_life[i] = rel_life;
if (rel_life > 1)
{
destroyParticle(i);
--i;
--c;
}
}
}
// 销毁对象实体
void ParticleObject::destroy()
{
destroyParticle();
NullObject::destroy();
}
