Method Process

Engine/source/EtFramework/Systems/AudioSourceSystem.cpp:109–161

--------------------------------------- AudioSourceSystem::Translate::Process Update 3D source data within openAL

// Update 3D source data within openAL
//
void AudioSourceSystem::Translate::Process(ComponentRange<AudioSourceSystem::TranslateView>& range) 
{
	for (TranslateView& view : range)
	{
		// 3D source params, if dirty
		if (view.source3D->m_UpdateParams)
		{
			alSourcef(view.source->m_Source, AL_REFERENCE_DISTANCE, view.source3D->m_Params.referenceDistance);
			alSourcef(view.source->m_Source, AL_ROLLOFF_FACTOR, view.source3D->m_Params.rolloffFactor);
			alSourcef(view.source->m_Source, AL_MAX_DISTANCE, view.source3D->m_Params.maxDistance);
			alSourcef(view.source->m_Source, AL_CONE_INNER_ANGLE, view.source3D->m_Params.innerConeAngle);
			alSourcef(view.source->m_Source, AL_CONE_OUTER_ANGLE, view.source3D->m_Params.outerConeAngle);
			alSourcef(view.source->m_Source, AL_CONE_OUTER_GAIN, view.source3D->m_Params.outerConeGain);

			if (!view.source3D->m_Params.isDirectional)
			{
				alSource3f(view.source->m_Source, AL_DIRECTION, 0.f, 0.f, 0.f);
			}
			else
			{
				vec3 const fwd = ALvec3(view.transf->GetForward());
				alSource3f(view.source->m_Source, AL_DIRECTION, fwd.x, fwd.y, fwd.z);
			}

			ET_ASSERT(!AudioManager::GetInstance()->TestALError("AL 3D source params error"));

			view.source3D->m_UpdateParams = false;
		}

		// 3D source position, rotation, direction
		if (view.transf->HasTransformChanged())
		{
			vec3 const pos = ALvec3(view.transf->GetWorldPosition());
			alSource3f(view.source->m_Source, AL_POSITION, pos.x, pos.y, pos.z);

			vec3 const vel = pos - view.source3D->m_PrevPos;
			view.source3D->m_PrevPos = pos;
			alSource3f(view.source->m_Source, AL_VELOCITY, vel.x, vel.y, vel.z);

			if (view.source3D->m_Params.isDirectional)
			{
				vec3 const fwd = ALvec3(view.transf->GetForward());
				alSource3f(view.source->m_Source, AL_DIRECTION, fwd.x, fwd.y, fwd.z);
			}
		}
		else
		{
			alSource3f(view.source->m_Source, AL_VELOCITY, 0.f, 0.f, 0.f);
		}

		ET_ASSERT(!AudioManager::GetInstance()->TestALError("AL 3D source transform error"));
	}
}

//------------------------------------
// AudioSourceSystem::State::Process