Method SpawnOnce

trinity/Particle/Tr2GpuSharedEmitter.cpp:236–276

}

void Tr2GpuSharedEmitter::SpawnOnce( const UpdateArguments& arguments, const Vector3& velocity, float scale, float rateModifier )
{
	if( !arguments.system || !m_enabled )
	{
		return;
	}

	auto emitter = m_emitter;
	emitter.count = int( m_rate * rateModifier );

	if( emitter.count )
	{
		emitter.radius *= scale;
		emitter.minSpeed *= scale;
		emitter.maxSpeed *= scale;

		emitter.position = XMVector3TransformCoord( m_position, arguments.parentTransform );
		emitter.positionPrevious = emitter.position;

		emitter.velocity = velocity;
		emitter.velocityPrevious = emitter.velocity;

		emitter.direction = XMVector3TransformNormal( m_direction, arguments.parentTransform );
		emitter.directionPrevious = emitter.direction;

		auto id = m_id;
		auto hash = m_paramsHash;
		auto params = m_params;
		if( scale != 1.0f )
		{
			params.sizes *= scale;
			params.turbulenceAmplitude *= scale;
			params.turbulenceFrequency = (uint32_t)( (float)params.turbulenceFrequency / scale );

			hash = GetHash( params );
			id = GetID( hash );
		}

		arguments.system->Emit( emitter, id, hash, params );
	}
}