void ListenerNode::updatePositionAndOrientation()
{
//get absolute transformation of node, by default OpenAL uses absolute transformations
const float *absMatPtr;
getTransMatrices( 0x0, &absMatPtr );
Matrix4f absMat( absMatPtr );
Vec3f trans, rot, scale;
absMat.decompose( trans, rot, scale );
alListener3f( AL_POSITION, trans.x, trans.y, trans.z );
//remove translation
absMat.x[12] = 0;
absMat.x[13] = 0;
absMat.x[14] = 0;
Vec3f forward = ( absMat * Vec3f( 0, 0, -1 ) ).normalized();
Vec3f up = ( absMat * Vec3f( 0, 1, 0 ) ).normalized();
float orientation[6];
orientation[0] = forward.x;
orientation[1] = forward.y;
orientation[2] = forward.z;
orientation[3] = up.x;
orientation[4] = up.y;
orientation[5] = up.z;
alListenerfv( AL_ORIENTATION, orientation );
}
void SoundNode::onPostUpdate()
{
//this gets called after absolute transformation has been updated
const float *absMatPtr;
getTransMatrices( 0x0, &absMatPtr );
Matrix4f absMat( absMatPtr );
Vec3f trans, rot, scale;
absMat.decompose( trans, rot, scale );
alSource3f( _source, AL_POSITION, trans.x, trans.y, trans.z );
}
