Method PrepareParticles

TombEngine/Renderer/RendererDrawEffect.cpp:475–632

	}

	void Renderer::PrepareParticles(RenderView& view)
	{
		for (int i = 0; i < ParticleNodeOffsetIDs::NodeMax; i++)
			NodeOffsets[i].itemNumber = NO_VALUE;

		for (auto& particle : Particles)
		{
			if (!particle.on)
				continue;

			if (particle.DisableInterpolation)
			{
				particle.DisableInterpolation = false;
				particle.StoreInterpolationData();
			}

			if (particle.flags & SP_DEF)
			{
				auto pos = Vector3::Lerp(
					Vector3(particle.PrevX, particle.PrevY, particle.PrevZ),
					Vector3(particle.x, particle.y, particle.z),
					GetInterpolationFactor());

				if (particle.flags & SP_FX)
				{
					const auto& fx = EffectList[particle.fxObj];

					auto& newEffect = _effects[particle.fxObj];

					newEffect.Translation = Matrix::CreateTranslation(fx.pos.Position.ToVector3());
					newEffect.Rotation = fx.pos.Orientation.ToRotationMatrix();
					newEffect.Scale = Matrix::CreateScale(1.0f);
					newEffect.World = newEffect.Rotation * newEffect.Translation;
					newEffect.ObjectID = fx.objectNumber;
					newEffect.RoomNumber = fx.roomNumber;
					newEffect.Position = fx.pos.Position.ToVector3();
					
					newEffect.InterpolatedPosition = Vector3::Lerp(newEffect.PrevPosition, newEffect.Position, GetInterpolationFactor());
					newEffect.InterpolatedTranslation = Matrix::Lerp(newEffect.PrevTranslation, newEffect.Translation, GetInterpolationFactor());
					newEffect.InterpolatedRotation = Matrix::Lerp(newEffect.InterpolatedRotation, newEffect.Rotation, GetInterpolationFactor());
					newEffect.InterpolatedWorld = Matrix::Lerp(newEffect.PrevWorld, newEffect.World, GetInterpolationFactor());
					newEffect.InterpolatedScale = Matrix::Lerp(newEffect.PrevScale, newEffect.Scale, GetInterpolationFactor());

					pos += newEffect.InterpolatedPosition;

					if ((particle.sLife - particle.life) > Random::GenerateInt(8, 12))
					{
						// Particle becomes autonome.
						particle.flags &= ~SP_FX;

						particle.x = particle.PrevX = pos.x;
						particle.y = particle.PrevY = pos.y;
						particle.z = particle.PrevZ = pos.z;
					}
				}
				else if (!(particle.flags & SP_ITEM))
				{
					// NOTE: pos already set previously.