Method Update

src/game/client/components/particles.cpp:78–144

}

void CParticles::Update(float TimePassed)
{
	if(TimePassed <= 0.0f)
		return;

	m_FrictionFraction += TimePassed;

	if(m_FrictionFraction > 2.0f) // safety measure
		m_FrictionFraction = 0;

	int FrictionCount = 0;
	while(m_FrictionFraction > 0.05f)
	{
		FrictionCount++;
		m_FrictionFraction -= 0.05f;
	}

	for(int &FirstPart : m_aFirstPart)
	{
		int i = FirstPart;
		while(i != -1)
		{
			int Next = m_aParticles[i].m_NextPart;
			m_aParticles[i].m_Vel.y += m_aParticles[i].m_Gravity * TimePassed;

			for(int f = 0; f < FrictionCount; f++) // apply friction
				m_aParticles[i].m_Vel *= m_aParticles[i].m_Friction;

			// move the point
			vec2 Vel = m_aParticles[i].m_Vel * TimePassed;
			if(m_aParticles[i].m_Collides)
			{
				Collision()->MovePoint(&m_aParticles[i].m_Pos, &Vel, random_float(0.1f, 1.0f), nullptr);
			}
			else
			{
				m_aParticles[i].m_Pos += Vel;
			}
			m_aParticles[i].m_Vel = Vel * (1.0f / TimePassed);

			m_aParticles[i].m_Life += TimePassed;
			m_aParticles[i].m_Rot += TimePassed * m_aParticles[i].m_Rotspeed;

			// check particle death
			if(m_aParticles[i].m_Life > m_aParticles[i].m_LifeSpan)
			{
				// remove it from the group list
				if(m_aParticles[i].m_PrevPart != -1)
					m_aParticles[m_aParticles[i].m_PrevPart].m_NextPart = m_aParticles[i].m_NextPart;
				else
					FirstPart = m_aParticles[i].m_NextPart;

				if(m_aParticles[i].m_NextPart != -1)
					m_aParticles[m_aParticles[i].m_NextPart].m_PrevPart = m_aParticles[i].m_PrevPart;

				// insert to the free list
				if(m_FirstFree != -1)
					m_aParticles[m_FirstFree].m_PrevPart = i;